CN102598746B

CN102598746B - Use the apparatus and method of fractional frequency reuse controls transfer power in a wireless communication system

Info

Publication number: CN102598746B
Application number: CN201080051157.7A
Authority: CN
Inventors: 李旭峰; 赵汉奎; 具滋昊; 任彬哲; 崔镇洙
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2009-11-11
Filing date: 2010-11-11
Publication date: 2016-02-17
Anticipated expiration: 2030-11-11
Also published as: CN102598746A; MY163797A; KR20110052420A

Abstract

Disclose a kind of method using fractional frequency reuse (FFR) to obtain the FFR power mode of frequency partitions (FP) in a wireless communication system at mobile radio station (MS) place.The method comprises and receives leading from base station (BS); And it is leading that use receives, obtain for reusing-1 piecemeal and the FFR power mode of reusing-N piecemeal, wherein, FFR power mode is determined based on segment identifier (ID), reuse-N piecemeal and comprise N number of frequency partitions, each frequency partitions has the power level of FPl_ power level to the scope of FPN_ power level, is the piecemeal of FPl_ power level to reuse the power ascension FP in-N piecemeal be its power level.

Description

Use the apparatus and method of fractional frequency reuse controls transfer power in a wireless communication system

Technical field

The present invention relates to wireless communication system, more properly, relate to the method and apparatus using fractional frequency reuse (FFR) controls transfer power in a wireless communication system.

Background technology

Multi-carrier orthogonal frequency division multiple access (OFDMA) system comprises Resources allocation in the unit of the subchannel of subcarrier each.Because multiple user shares whole subcarrier, allly multi-user diversity gain can be realized in a frequency domain.Such as WiMAX (WiBro) system based on OFDMA broadband mobile internet access system, by reusing same frequency and application self-adapting modulation according to the interference of the signal strength signal intensity received and minizone in all cells and encoding (AMC), can by throughput-maximized.

Geographical capping unit is called as community or sector, and frequency error factor is between cells called as transfer with the calling in proceeding.Frequency reuse is necessary to cellular system.Calculated rate reuse factor is carried out divided by the community sum in multiple cell structure by the quantity of the community or sector that use same frequency simultaneously.

The first generation (1G) system (such as: advanced mobile phone service (AMPS)) has the frequency re-use factor being less than 1.Such as, in 7-cell frequency is reused, frequency re-use factor is 1/7.Frequency re-use factor in the second generation (2G) system (such as: code division multiple access (CDMA) and time division multiple access (TDMA) are than higher in 1G system.Such as, global mobile communication (GSM) system of frequency division multiple access (FDMA) and TDMA binding operation had the frequency re-use factor up to 4 or 3.2GCDMA or the third generation (3G) wideband CDMA (WCDMA) system can support the frequency re-use factor of 1, therefore increase spectrum efficiency and reduce network design cost.

When all sectors in community and all communities in network operate on the same frequency channel, the frequency re-use factor of 1 can be realized.Even so, even if the poor throughput that the severe jamming of the system with the frequency re-use factor of 1 also between cell edge or sector-edge bear due to neighbor cell causes, and therefore service disruption may be faced.That is, because presence of intercell interference, for the user of cell edge, signal receiving performance is poor.

In ofdma, channel distribution is become subchannel, and transmit on sub-channels.Unlike 3G(CDMA2000 or WCDMA), whole channel is not occupied for Signal transmissions.By utilizing this feature, for the user of the heart and the user at cell edge in the cell, throughput can be increased simultaneously.

More specifically, center of housing estate is the region close to base station (BS), and base station (BS) does not disturb by cochannel relatively.Therefore, the user of the heart can operate in all available subchannels in the cell.On the other hand, be only allowed to operate in the part of available subchannels the user of cell edge.The mode operated on different subchannels is assigned with to make the edge of neighbor cell by the part of subchannel.This is called as FFR.Make each community not use specific FA by whole subcarrier orthogonal division being become multiple frequency partitions (FP) and FA being deployed as or use specific FA with low-power level, the cochannel interference between neighbor cell can be alleviated.

Summary of the invention

Technical problem

Design is with the target of the present invention solving this problem, provides a kind of method using fractional frequency reuse (FFR) to obtain the FFR power mode of frequency partitions (FP) in a wireless communication system at mobile radio station (MS) place.

Design is with another target of the present invention solving this problem, provides a kind of method using fractional frequency reuse (FFR) through-put power in a wireless communication system at base station (BS) place control frequency piecemeal (FP).

Design is with the of the present invention another target solving this problem, provide a kind of use fractional frequency reuse (FFR), mobile radio station (MS) device in wireless communication system.

Design is with another target of the present invention solving this problem, provide a kind of use fractional frequency reuse (FFR), base station (BS) device in wireless communication system.

Issue-resolution

Therefore, the present invention relates to a kind of fractional frequency reuse that uses in a wireless communication system in the method for mobile radio station (MS) place controls transfer power, it eliminates the one or more problems because the restricted of prior art and shortcoming cause substantially.

A target of the present invention is to provide a kind of method and apparatus using fractional frequency reuse (FFR) controls transfer power in a wireless communication system.

Additional advantage of the present invention, target and feature will partly set forth in the description that follows and partly by those skilled in the art when checking hereafter or may learn from the practice of the present invention and become apparent.Can be realized by structure specifically noted in write description and claim and accompanying drawing and reach objects and advantages of the present invention.

In order to realize these objects with other advantages and according to object of the present invention, as herein implement with broadly described, a kind of method using fractional frequency reuse (FFR) to obtain the FFR power mode of frequency partitions (FP) in a wireless communication system at mobile radio station (MS) place, comprising: receive leading from base station (BS); And use the leading acquisition received for reusing-1 piecemeal and the FFR power mode of reusing-N piecemeal, wherein, FFR power mode is determined based on segment identifier (ID), reuse-N piecemeal and comprise N number of frequency partitions, each frequency partitions has in FPl_ power level to the power level of the scope of FPN_ power level, is the piecemeal of FPl_ power level to reuse the power ascension FP in-N piecemeal be its power level.

This method may further include by reusing-1 piecemeal or reusing the power ascension FP in-N piecemeal from base station receiving control information.Wherein, N is 2 or 3.

FFR power mode is determined by equation A,

[equation A]

K=section ID+1

Wherein, k is the index of FFR power mode.

In another aspect of this invention, a kind of FFR that uses, in a wireless communication system in the method for the through-put power of base station (BS) place's control FP, comprising: select in FFR power mode; And be transmitted into mobile radio station (MS) by leading, wherein, FFR power mode comprises the power mode of reusing-1 piecemeal He reusing-N piecemeal, FFR power mode is determined based on segment identifier (ID), reuse-N piecemeal and comprise N number of frequency partitions, each frequency partitions has in the power level of FPl power level to the scope of FPN_ power level, is the piecemeal of FPl_ power level to reuse the power ascension FP in-N piecemeal be its power level.

Control information is transmitted into mobile radio station by the power ascension FP that the method may further include by reusing-1 piecemeal or reusing-N piecemeal.Wherein, N is 2 or 3.

FFR power mode is determined by equation A,

[equation A]

K=section ID+1

Wherein, k is the index of FFR power mode.

In another aspect of this invention, a kind of use FFR, MS device in wireless communication system, comprising: radio frequency (RF) unit, for receiving leading from base station (BS); And processor unit, for using received leading acquisition for reusing-1 piecemeal and the FFR power mode of reusing-N piecemeal, wherein, FFR power mode is determined based on segment identifier (ID), reuse-N piecemeal and comprise N number of frequency partitions, each frequency partitions has in the power level of FPl_ power level to the scope of FPN_ power level, is the piecemeal of FPl_ power level to reuse the power ascension FP in-N piecemeal be its power level.

In still another aspect of the invention, a kind of use FFR, BS device in wireless communication system, comprising: processor unit, for selecting the one in FFR power mode; And radio frequency (RF) unit, for being transmitted into mobile radio station (MS) by leading, wherein, FFR power mode comprises the power mode of reusing-1 piecemeal He reusing-N piecemeal, FFR power mode is determined based on segment identifier (ID), reuse-N piecemeal and comprise N number of frequency partitions, each frequency partitions has the power level of FPl_ power level to the scope of FPN_ power level, is the piecemeal of FPl_ power level to reuse the power ascension FP in-N piecemeal be its power level.

It is exemplary and explanat for it should be understood that above-outlined of the present invention and hereafter describing in detail, and aims to provide of the present invention further explanation as claimed in claim.

Beneficial effect of the present invention

According to the present invention, do not need the extraneous information of launching the position comprising power ascension FP.Therefore, decrease signaling consumption, and systematic function can be avoided to reduce, otherwise the extra signaling that indicated horsepower promotes the position of FP may cause signaling consumption to increase and systematic function decline.

It will be appreciated by those skilled in the art that, the effect utilizing the present invention to realize is not limited to, what described especially, and according to by reference to the accompanying drawings to detailed description hereafter, clearly to understand other advantages of the present invention above.

Accompanying drawing explanation

Be included to provide a further understanding of the present invention and be merged in the application and the accompanying drawing forming a application's part illustrates (one or more) embodiment of the present invention and together with the description for explaining principle of the present invention.In the accompanying drawings:

Fig. 1 illustrates sample portion frequency reuse (FFR) scheme.

Fig. 2 illustrates the exemplary cycle transmission of first subgroup (SP1) of auxiliary superframe header (S-SFH), the second subgroup (SP2) and the 3rd subgroup (SP3).

Fig. 3 illustrates the power level of the frequency partitions (FP) with frequency reuse 3.

Fig. 4 illustrates the FP power mode of frequency reuse 2.

Fig. 5 is the block diagram for performing base station of the present invention (BS) device or mobile radio station (MS) device.

Embodiment

Embodiments of the invention can by about the standard document support disclosed at least one wireless access system, i.e. IEEE (IEEE) 802.16m system, third generation affiliate (3GPP) system, 3GPP Long Term Evolution (LTE) system and 3GPP2 system.In other words, can support that those are not described to illustrate step and the parts of technical spirit of the present invention by standard document.And, all wording as used herein and technology can be explained by standard document.

In the following description, use particular term to contribute to understanding the present invention, and they can replace by other terms of belonging in the scope of the invention and spirit.

When using " BS " with geographic significance, term used herein " base station (BS) " can be called " community " or " sector ".Serving BS broadcasts (community) is the BS providing main traditional services to mobile radio station (MS).Within a context, serving BS broadcasts (community) can be called anchor BS(community).Similarly, when using " neighbor bss " with geographic significance, term " neighbor bss " is interchangeable with " neighbor cell ".Community or sector refer to the basic network entity performing fractional frequency reuse (FFR).There is provided the meaning of service in based on FFR to cell edge MS at term " community " and " sector ", they can exchange.

In order to realize FFR scheme in multi-cell environment, each BS can use different frequency bands (or frequency partitions (FP)) on sub-channels.But, in all sectors, use some sounds publicly, and therefore there is the frequency re-use factor of 1.On the other hand, other sounds be not commonly used in all sectors but for 1/3 all sectors, and therefore there is the frequency re-use factor of 3.Frequency re-use factor can change along with network settings.In order to effectively implement FFR scheme, FFR configuration information should be shared between BS and/or MS.

Use each community of FFR scheme or can cannot promote through-put power in special frequency band.

According to the present invention, the frequency resource that can be used for each community served in MS can be divided into multiple frequency resource group.Frequency resource group can be called frequency band, frequency domain or FP etc.

Fig. 1 illustrates exemplary FFR scheme.

With reference to figure 1, a community or sector have four FP, F1 to F4 across whole bandwidth usually.Four FP can be divided into F1, F2 and F3 region of the frequency re-use factor (hereinafter, referred to as frequency reuse-3) with 3, and have the F4 region of frequency reuse 1.

Because be less than Cell Edge User from the impact of interference on internal user of other communities, all each communities by there is frequency reuse 1 F4 region allocation to community or the user of center of housing estate, that is, internal user.Therefore, signal can be transmitted into the internal user in F4 region (or district) by community with high power levels.

Community can by each MS of F1, F2 and F3 region allocation in the MS and community of cell edge with frequency reuse 3.Different districts can will have the different FP region allocation of frequency reuse 3 to the MS at its cell edge.Such as, community A can will have the F1 region allocation of frequency reuse 3 to the MS being positioned at its cell edge, and is therefore subject to presence of intercell interference.Signal by F1 region allocation to the inside MS being positioned at center of housing estate, and can be transmitted into the inside MS in F1 region by community B and community C with low-power level subsequently.Therefore, be positioned at the MS at A edge, community less by the impact from the interference of other communities (or neighbor cell), and therefore they can receiving downlink signal effectively.

In the same manner, community B can by F2 region allocation to the user at edge being positioned at community B, and this user may by presence of intercell interference appreciable impact.Signal by F2 region allocation to the inside MS being positioned at center of housing estate, and can be transmitted into the inside MS in F2 region by community A and community C with low-power level subsequently.Therefore, be positioned at the less impact being subject to interference from other communities (or neighbor cell) of the MS at B edge, community, and therefore they can receiving downlink signal effectively.

Community C can by F3 region allocation to the user at edge being positioned at community C, and this user may by presence of intercell interference appreciable impact.Signal by F3 region allocation to the inside MS being positioned at center of housing estate, and can be transmitted into the inside MS in F3 region by community A and community B with low-power level subsequently.Therefore, be positioned at the MS at the edge of community C less by the impact from the interference of other communities, and therefore they can receiving downlink signal effectively.

Such as, about community A, if F2 and the F3 region corresponding with frequency reuse 3 piecemeal is assigned to the internal user of community A, then power level from the F1 region distributing to Cell Edge User to F2 and the F3 region allocation for internal user that can be lower than.Therefore, relative to Cell Edge User, the internal user in use F2 and F3 region can with low-power level from Serving cell (that is, community A) Received signal strength.

According to this FFR scheme, each community can use relatively high power level in F1, F2 and F3 region.Preferably, F1, F2 and F3 region with relative high powers is assigned to the MS(of bad channel state such as, cell edge MS).

Now detailed description is used for the method for the power level of FFR scheme control FP.

First the superframe header (SFH) of bearing system information will be described.SFH comprises main SFH(P-SFH) and auxiliary SFH(S-SFH).S-SFH comprises forced system parameter and system configuration information, and is launched in three subgroup SP1, SP2 and SP3.Three subgroup SP1, SP2 and SP3 are periodically launched at different time with different cycles.The cycle T SP1 of subgroup SP1, SP2 and SP3, TSP2 and TSP3 are in the relation of TSP1<TSP2<TSP3.

Fig. 2 illustrates the first, second, and third subgroup SP1 of S-SFH, the exemplary cycle transmission of SP2 and SP3.With reference to figure 2, launch SP1 with the most short period, thus launch SP3 with most long period.

BS can determine Downlink Control Information (the senior MAP(A-MAP such as, in IEEE802.16m)) FP that will be launched wherein.If FFR is applied to subframe, then subframe comprises FP, and can reuse-3FP and launch Downlink Control Information by reusing-1FP or power ascension.The FP of bearing downlink control information can be called main FP.The main FP of instruction can be launched from BS with 1 of SP1 to reuse-1FP or reuse the information of-3FP.Such as, if this position is 0, this may show that main FP is corresponding with the piecemeal of frequency reuse 1, and if this position is 1, then this may show that main FP is corresponding with the piecemeal of frequency reuse 3.

If this position is 1, then MS needs to understand which power ascension of reusing in-3FP, to obtain Downlink Control Information.

Fig. 3 illustrates the power level of the FP with frequency reuse 3.Be configured to reference to figure 3, FFR structure, if the frequency partitions corresponding with frequency reuse 1 exists, then the FP of frequency reuse 1 is then frequency reuse 3FP or reuses 2FP.For each community, each FP has different transmission power level.When community operates in FFR, different B S uses different through-put power pattern.

Such as, assuming that four FP, each BS can select one in three FFR power modes (that is, community 1, community 2 and community 3 pattern), as illustrated in figure 3.Each of three FFR power modes comprises FPl_ power level FP, FP2_ power level FP and FP3_ power level FP.

By using the segment identifier (ID) derived from community ID by BS, the index of FFR power mode can be set.That is, each BS adopts the FFR power mode corresponding with the community k of its covering.Can determine k by following equalities, k is the index of FFR power mode.

[equation 1]

K=section ID+1

The instruction of FFR power mode has the position of the FP of FP_1 power level, FP_2 power level and FP_3 power level respectively, and does not indicate the actual power level of each FP.

By the broadcast message of such as advanced air interface dl interference suppression (AdvancedAirInterface_Downlink_InterferenceMitigation) (AAI_DL_IM) message or in the SP3 of S-SFH, the actual power level of each FP can be launched from BS.FP_1 power level, FP_2 power level and FP_3 power level can be scheduled in systems in which, and FP_2 power level and FP_3 power level can be updated.Because the transmission cycle of SP1 is very short, its may not be preferably come by broadcast message or S-SFHSP3 receive FP actual power level, promote FP according to the actual power level detection power of FP and obtain Downlink Control Information in detected FP.In transmission delay or signaling consumption, may not be preferred by BS by extra signaling power ascension FP.

Due to this reason, the power ascension FP that the present invention proposes in frequency reuse 3FP is defined as FPl_ power level FP.

Therefore, BS and MS can understand by which the FP emission control information in frequency reuse 3FP.With regard to MS, understand the FP of bear control information when there is no extra signaling.

Although described power to control when frequency reuse 3, the present invention is not limited thereto, identical content can be applied to frequency reuse 2.

Fig. 4 illustrates the FP power mode for frequency reuse 2.Be configured to reference to figure 4, FFR structure, if when the frequency partitions corresponding with frequency reuse 1 exists, then the FP of frequency reuse 1 is then frequency reuse 2.For each community, each FP has different transmission power level.When community operates in FFR, different B S uses different through-put power pattern.

Such as, assuming that two FP, each BS can select one in two FFR power modes (that is, community 1 and community 2 pattern), as illustrated in figure 4.Two FFR power modes comprise the community 1FFR power mode of FPl_ power level FP and FP2_ power level FP and comprise the community 2FFR power mode of FPl_ power level FP and FP3_ power level FP.

By using the section ID derived from community ID by BS, the index of FFR power mode can be set.That is, each BS adopts the FFR power mode corresponding with the community k of its covering.Can determine k by following equalities, k is the index of FFR power mode.

[equation 2]

K=section ID+1

The instruction of FFR power mode has the position of the FP of FP_1 power level, FP_2 power level and FP_3 power level, and does not indicate the actual power level of each FP.MS can receive targeting signal from base station (such as: serving BS broadcasts).MS uses the targeting signal received from BS can obtain FFR power mode.Because determine FFR power mode based on section ID, the targeting signal so MS decodes, can obtain the FFR power mode for Serving cell subsequently.

By in the such as broadcast message of AAI_DL_IM message or the SP3 of S-SFH, the actual power level of each FP can be launched from BS.Because the transmission cycle of SP1 is very short, thus its may not be preferably come by broadcast message or S-SFHSP3 receive FP actual power level, promote FP according to the actual power level detection power of FP and obtain Downlink Control Information in the FP detected.

In transmission delay or signaling consumption, may not be preferred from BS by extra signaling power ascension FP.

Due to this reason, the power ascension FP that the present invention proposes in frequency reuse 2FP is defined as defining FPl_ power level FP.

Therefore, BS and MS can understand by which the FP emission control information in frequency reuse 2FP.With regard to MS, understand the FP of bear control information when there is no extra signaling.

Above-mentioned FFR scheme eliminates the needs of the extraneous information for launching the position being used to indicate power ascension FP.Therefore, signaling consumption is reduced, and systematic function reduces and can be avoided, otherwise the extra signaling that indicated horsepower promotes the position of FP may cause signaling consumption to increase and systematic function decline.

In FFR, BS selects FP pattern and according to the through-put power of FP Schema control FP.Usually, emission control information in power ascension FP.Only when mobile radio station (MS) understands power ascension FP in advance, MS can obtain control information.

Fig. 5 is according to the block diagram of the present invention for the BS device or MS device that perform said method.

Processor unit 101, memory cell 102, radio frequency (RF) unit 103, display unit 104 and user interface section 105 is comprised with reference to figure 5, BS or MS device 100.Processor unit 101 is responsible for process physics protocol layer of the interface.Processor unit 101 provides control plane and user plane.The function of every layer can be performed in processor unit 101.Processor unit 101 can perform the above embodiment of the present invention.More specifically, processor unit 101 generates the subframe of the position for determining MS, or determines the position of MS by receiving subframe.

Memory cell 102 is electrically connected to processor unit 101, and storage operation system, application program and general file.If device 100 is MS devices, display unit 104 can show various information.Display unit 104 can be liquid crystal display (LCD), organic light emitting diode (OLED) display etc.Known users interface in conjunction with such as keyboard, touch-screen etc. can realize user interface section 105.RF unit 103 is electrically connected to processor unit 101, for transmitting and receiving RF signal.RF unit 103 can comprise transmitter (not shown) and receiver (not shown).

Describe above according to of the present invention, it is evident that, do not need to launch the extraneous information that indicated horsepower promotes the position of FP.Therefore, signaling consumption is reduced, and systematic function reduces and can be avoided, otherwise the extra signaling that indicated horsepower promotes the position of FP may cause signaling consumption to increase and systematic function decline.

The present invention may be used on MS, BS in mobile radio system or other devices.

Above-described embodiments of the invention are combinations of element of the present invention and feature.Unless otherwise mentioned, can think that these elements and feature are optionally.Each element or feature can when not putting into practice with when other elements or integrate features.In addition, can by the part structure embodiments of the invention in conjunction with these elements and/or feature.The operating sequence described in embodiments of the invention can be rearranged.Structure in any one embodiment can be included in another embodiment, or can be replaced by the corresponding structure of another embodiment.For a person skilled in the art, it is evident that, as exemplary embodiment of the present invention to combine appearance, or can be included by revising as new claim subsequently after the application is submitted in the claim of the non-specific reference each other of enclosing in claim.

Term used herein " MS " can be replaced by term " subscriber equipment (UE) ", " subscriber station (SS) ", " mobile subscriber station (MSS) ", " mobile terminal ", " terminal " etc.

Meanwhile, MS can be any one in personal digital assistant (PAD), cell phone, personal communication service (PCS) phone, global mobile system (GSM) phone, bandwidth code division multiple access (WCDMA) phone, mobile bandwidth system (MBS) phone etc.

Embodiments of the invention can be realized by such as hardware, firmware, software or its various modes combined.

In hardware configuration, can one or more application-specific integrated circuit (ASIC) (ASIC), digital signal processor (DSP), digital signal processing appts (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor etc. be passed through, realize method according to an embodiment of the invention.

In firmware or software merit rating, to perform the form of the module, program, function etc. of function described herein or operation, method according to an embodiment of the invention can be realized.Software Coding can be stored in the memory unit and be performed by processor.Memory cell is positioned at inside or the outside of processor, and can transmit data to processor via various known way or receive data from processor.

It is apparent to those skilled in the art that when not departing from spirit of the present invention and essential characteristic, can to perform the present invention except other ad hoc fashions described herein.Therefore, above-described embodiment is interpreted as exemplary and nonrestrictive in all respects.Should be equal to by enclose claim and its law and determine scope of the present invention, but not describe above, and all changes of the implication and equivalents that belong to claim of enclosing are intended to be included therein.To those skilled in the art, it is evident that, can as exemplary embodiment of the present invention to combine appearance in the claim of the non-specific reference each other of enclosing in claim, or by revising as new claim subsequently and being included after this application is submitted.Industrial applicibility

For the MS apparatus and method using FFR to obtain fractional frequency reuse (FFR) power mode of frequency partitions (FP), by the wireless communication system of commercial Application to such as 3GPPLTE, LTE-A, IEEE802 etc.Further, for using the BS apparatus and method of the through-put power of fractional frequency reuse (FFR) control frequency piecemeal (FP) by the communication standard of commercial Application to such as 3GPPLTE, LTE-A, IEEE802 etc.

Claims

1. use fractional frequency reuse (FFR) to obtain a method for the FFR power mode of frequency partitions (FP) in a wireless communication system at mobile radio station (MS) place, described method comprises:

Superframe header (SFH) is received from base station (BS); And

Based on received SFH, obtain FFP power mode,

Wherein, each FFP power mode has reuses-1 piecemeal and reuses-N piecemeal, and described in reuse-N piecemeal and comprise FP1_ power level FP to FPN_ power level FP, and in each FFP power mode, the ordering of described FP1_ power level FP to described FPN_ power level FP is different according to the index of described FFP power mode

Wherein, described MS determines to have the described FFR power mode of the described index of the value of the k corresponding to the pass equation A to determine:

[equation A]

The segment identifier (ID)+1 of BS described in k=, and

Wherein, described in each FFR power mode, the power ascension FP reused in-N piecemeal is fixed to described FP1_ power level FP.

2. method according to claim 1, comprises further:

-1 piecemeal is reused or at the described described power ascension FP reused in-N piecemeal, from described base station receiving control information by described.

3. method according to claim 1, wherein, N is 2 or 3.

4. use a method for fractional frequency reuse (FFR) through-put power in a wireless communication system at base station (BS) place control frequency piecemeal (FP), described method comprises:

Determine to have the FFR power mode of the index of the value of the k corresponding to the pass equation A to determine:

[equation A]

The segment identifier (ID)+1 of BS described in k=,

5. method according to claim 4, comprises further:

Reuse-1 piecemeal by described or at the described described power ascension FP reused in-N piecemeal, control information be transmitted into mobile radio station.

6. method according to claim 4, wherein, N is 2 or 3.

7. use fractional frequency reuse (FFR), mobile radio station (MS) device in wireless communication system, described MS device comprises:

Radio frequency (RF) unit, described radio frequency (RF) unit is used for receiving superframe header (SFH) from base station (BS); And

Processor unit, described processor unit is used for obtaining FFR power mode based on received SFH;

Wherein, each FFP power mode has reuses-1 piecemeal and reuses-N piecemeal, and described in reuse-N piecemeal and comprise FP1_ power level FP to FPN_ power level piecemeal (FP), and in each FFP power mode, the ordering of described FP1_ power level FP to described FPN_ power level FP is different according to the index of described FFP power mode

Wherein, described processor unit determines to have the described FFR power mode of the described index of the value of the k corresponding to the pass equation A to determine:

[equation A]

The segment identifier (ID)+1 of BS described in k=, and

Wherein, described in each FFR power mode, the power ascension frequency FP reused in-N piecemeal is fixed to described FP1_ power level FP.

8. MS device according to claim 7, comprises further:

RF unit, described RF unit is used for being reused-1 piecemeal by described or reused described power ascension FP in-N piecemeal from described base station receiving control information described.

9. MS device according to claim 7, wherein, N is 2 or 3.

10. use fractional frequency reuse (FFR), base station (BS) device in wireless communication system, described BS device comprises:

Processor unit, described processor unit is for determining to have the FFR power mode of the index of the value of the k corresponding to the pass equation A to determine:

[equation A]

The segment identifier (ID)+1 of BS described in k=; And

Radio frequency (RF) unit, described radio frequency (RF) unit is used for superframe header (SFH) to be transmitted into mobile radio station (MS),

11. BS devices according to claim 10, comprise further:

RF unit, described RF unit be used for by described reuse-1 piecemeal or described in the described power ascension FP reused in-N piecemeal control information is transmitted into described mobile radio station.

12. BS devices according to claim 10, wherein, N is 2 or 3.