CN101171811B - Interference control method in wireless communication system and equipment - Google Patents
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Abstract
Control to carry out interference, sector m is estimated from the viewed interference of the terminal nearby sectors and is obtained interference estimate.Sector m can produce (IS) OSI between aerial (OTA) other sector interference (OSI) report and/or sector based on described interference estimate and report.Can sector m send described IS to described nearby sectors? OSI reports, receive the IS from described nearby sectors? OSI reports, and based on the IS of described reception? the transfer of data of terminal in OSI report adjustment sector m.Sector m can control the terminal access to sector m, to the de-assign terminals of institute's access, to reduce the terminal of to dispatch the mode of the interference of described nearby sectors in sector m, and/or to the described terminal assignments in sector m, described nearby sectors is produced to the Traffic Channel of less interference.
Description
according to 35USC § 119 (e) CLAIM OF PRIORITY
Subject application claims are being entitled as " InterferenceControlInAWirelessCommunicationSystem " and transferring the 11/158th of the assignee of subject application of application on June 21st, 2005, the part continuation application of No. 584 U.S. patent application case, the mode that described U.S. patent application case is quoted in full is incorporated herein.
Technical field
The present invention relates generally to communication, and the interference more particularly related in wireless communication system controls.
Background technology
Wireless multi-path access communication system can communicate with the multiple terminals on reverse link with forward direction simultaneously.Forward link (or down link) refers to the communication link from base station to terminal, and reverse link (or up link) refers to the communication link from terminal to base station.Multiple terminal can side by side be transmitted data on reverse link and/or receive data on the forward link.This is multiplexed with orthogonal in time domain, frequency domain and/or code domain and realize often through the transmission made on each link.
On reverse link, the transmission from the terminal communicated with different base station is usually non-orthogonal each other.Therefore, each terminal may produce other terminal with neighbouring base station communication and disturb, and also may receive the interference from these other terminals.Interference from other terminal with other base station communication makes the performance degradation of each terminal.
Therefore, need in technique for alleviating the technology disturbed in wireless communication system.
Summary of the invention
Technology for controlling the interference from nearby sectors observed by each sector in wireless communication system is described herein.Sector m estimate from the terminal observes nearby sectors to interference and obtain interference estimate or correlation measure.Control for network interference, sector m can produce (IS) OSI between sector based on interference estimate and report, and sends described ISOSI via wired connection (such as, back haul link) to nearby sectors and report.The ISOSI that sector m also receives from nearby sectors reports, and reports the transfer of data of terminal in adjustment sector m based on received ISOSI.Sector m adjusts transfer of data by following operation: (1) controls the new terminal access to sector m; (2) to the de-assign terminals of access; (3) to reduce the terminal of to dispatch the mode of the interference of nearby sectors in sector m; And/or (4) produce the Traffic Channel of less interference to nearby sectors to the terminal assignments in sector m.
Various aspects of the present invention and embodiment are hereafter described in further detail.
Accompanying drawing explanation
Consider by reference to the accompanying drawings, more will understand characteristic sum character of the present invention from the specific descriptions hereafter stated, in accompanying drawing, same reference numeral correspondingly identifies all the time.
Fig. 1 shows the communication system with base station and terminal.
Fig. 2 shows the process for disturbing control performed by a sector.
Fig. 3 shows the process for disturbing control performed by a terminal.
Fig. 4 shows the process being used for regulating through-put power in certainty mode.
Fig. 5 shows the process being used for regulating through-put power in probability mode.
Fig. 6 shows the power control mechanism being applicable to disturb control.
Fig. 7 shows the block diagram of a terminal and two base stations.
Fig. 8 shows the equipment being applicable to disturb control.
Fig. 9 shows the equipment being applicable to provide interference to control.
Embodiment
Vocabulary " exemplary " is used to represent " serving as example, example or explanation " herein.Any embodiment or the design that are described as " exemplary " herein are all not necessarily interpreted as being preferred or favourable compared with other embodiment or design.
Fig. 1 shows the wireless communication system 100 with multiple base station 110 and multiple terminal 120.Base station is generally the fixed station with terminal communication, and also can be described as access point, Node B or other term a certain.Each base station 110 is specific geographical area 102a, 102b, and 102c provides communication overlay.Term " community " can refer to base station and/or its overlay area, and this depends on the context using term.In order to improved system ability, the overlay area of base station can be divided into multiple comparatively zonule, such as, and three comparatively zonule 104a, 104b and 104c.Each is comparatively served by corresponding base station transceiver subsystem (BTS) zonule.Term " sector " can refer to BTS and/or its overlay area, and this depends on the context using term.For sectorized cells, the BTS of all sectors of described community is positioned in the base station of described community usually jointly.System controller 130 is coupled to base station 110, and coordinates for these base stations provide and control.
Terminal can be fixing or movement, and also can be described as travelling carriage, wireless device, subscriber equipment or other term a certain.Each terminal any given time can with zero, one or more base station communication.
Interference control technology described herein can be used for having the system of sectorized cells and has the system of un-sectorized community.In the following description, term " sector " refers to that (1) has normal base station and/or its overlay area that the conventional BTS of the system of sectorized cells and/or its overlay area and (2) have the system of un-sectorized community.Term " terminal " and " user " can be used alternatingly, and term " sector " and " base station " also can be used alternatingly.Serving BS/sector is the base stations/sectors with terminal communication.Neighbor base station/sector be not with the base stations/sectors of terminal communication.
Interference control technology also can be used for various multi-access communication system.For example, these technology can be used for code division multiple access (CDMA) system, frequency division multiple access (FDMA) system, time division multiple access (TDMA) system, OFDM (OFDMA) system, Interleaved FDMA (IFDMA) system, centralized FDMA (LFDMA) system, space division multiple access (SDMA) system, accurate orthogonal multiple access system etc.IFDMA is also referred to as distributed FDMA, and LFDMA is also referred to as arrowband FDMA or traditional F DMA.OFDMA system utilizes Orthodoxy Frequency Division Multiplex (OFDM).Total system bandwidth is divided into multiple (K) orthogonal frequency subbands by OFDM, IFDMA and LFDMA effectively.These sub-bands also can be described as tone, subcarrier, frequency range (bin) etc.OFDM transmits modulation symbol in a frequency domain on all K sub-band or its subset.IFDMA transmits modulation symbol in the time domain being evenly distributed on the sub-band on K sub-band.LFDMA in the time domain and usually in adjacent sub-bands, transmit modulation symbol.
As shown in Figure 1, each sector can receive and transmit from " will " transmission of terminal in sector and " interference " from terminal in other sector.Total interference that each sector place observes comprises (1) from interference in the sector of terminal in same sector and (2) from the inter-sector interference of terminal in other sector.Inter-sector interference is also called other sector interference (OSI), and it results from transmission non-orthogonal with the transmission in other sector in each sector.In inter-sector interference and sector, interference all has considerable influence to performance, and can be alleviated as mentioned below.
Can use and such as control inter-sector interference based on the various mechanism that interference controls and network interference controls of user.Interference based on user is controlled, to the inter-sector interference that terminal notification is observed by nearby sectors, and its through-put power of corresponding adjustment, inter-sector interference is maintained in acceptable level.Network interference is controlled, notifies the inter-sector interference observed by nearby sectors to each sector, and adjust the transfer of data of its terminal, inter-sector interference is maintained in acceptable level.System can only utilize the interference based on user to control, or only utilizes network interference to control, or both utilizing.Interference controlling mechanism and combination thereof can be implemented in every way, as mentioned below.
Fig. 2 shows the process 200 controlled for inter-sector interference performed by a sector m.Sector m estimate from other sector terminal observes to interference, and obtain interference estimate (frame 210).In addition, the information produced without the need to for interference estimate and can form original measurement value and (or) threshold value of the terminal for other sector that obtained by sector m.
Control for the interference based on user, sector m produces aerial (OTA) OSI based on interference estimate and reports (frame 212).OTAOSI report is passed on the amount of the inter-sector interference observed by sector m and can provide in a variety of manners, as mentioned below.OTAOSI is reported the terminal (frame 214) be broadcast in nearby sectors by sector m.These terminals can regulate its through-put power, to reduce the amount of the inter-sector interference observed by sector m based on the OTAOSI report from sector m where necessary.
Control for network interference, sector m produces (IS) OSI between sector based on interference estimate and reports (frame 222).ISOSI report and OTAOSI report are two kinds of jamming reports can with identical or different form.For example, ISOSI report can be reported identical with OTAOSI.Or ISOSI report can be made up of following information: the information relevant with the interference threshold of the terminal from sector m recorded at other sector place, interference measure, path loss, institute's received power and/or can be used for determines to receive any out of Memory of the interference produced by sector m and the terminal of another sector reported from ISOSI.。Sector m periodically or only can send ISOSI report (frame 224) when sector m observes excessive interference to nearby sectors.The ISOSI that sector m also can receive from nearby sectors reports (frame 226).The speed exchanging ISOSI report between sectors can be identical or different with the speed reported to terminal broadcast OTAOSI.Sector m is based on the transfer of data (frame 228) of terminal in the ISOSI report adjustment sector m received from nearby sectors.Frame in Fig. 2 is hereafter described in further detail.
Sector m can estimate inter-sector interference in every way.For the system utilizing quadrature multiplexing, a terminal can in each symbol period in each subcarrier transmitting data or pilot tone.Pilot tone is the transmission of the known symbol of reflector and receiver priori.Data symbol is the modulation symbol of data, and frequency pilot sign is the modulation symbol of pilot tone, and modulation symbol is ensemble concentrates any complex value, such as, for M-PSK, M-QAM etc.
Sector m can based on the pilot tone that receives from terminal u estimate in given symbol period n to the interference on subcarrier k, as follows:
Wherein P
u(k, n) is the frequency pilot sign sent on sub-carrierk in symbol period n by terminal u;
it is the estimated value of the channel gain between sector m and terminal u;
R
m, u(k, n) is from institute's receiving symbol that terminal u obtains by sector m; And
I
m(k, n) is the estimated value of the interference observed by sector m.
Amount in equation (1) is scalar.
Sector m also can estimate described interference based on the data received from terminal u, as follows:
Wherein
it is the estimated value of the data symbol transmitted on sub-carrierk in symbol period n by terminal u.Sector m carrys out derive data symbol estimated value by following operation
: (1) is to having channel estimation value
institute receiving symbol R
m, u(k, n) performs Data Detection to obtain symbol after testing; (2) hard decision is derived based on symbol after testing; (3) use hard decision as data symbol estim.Or sector m carrys out derive data symbol estimated value by following operation: (1) performs Data Detection to institute's receiving symbol; (2) decode to obtain through decoded data to symbol after testing; (3) to carrying out re-encoding and sign map through decoded data to obtain data symbol estim.
Sector m also can perform combined channel and Interference Estimation to obtain channel response estimated value and interference estimate.
From the interference estimate I that equation (1) or (2) obtain
m(k, n) comprises both interference in inter-sector interference and sector.In sector, interference can control via power as mentioned below and maintain in acceptable level, and then can ignore compared with inter-sector interference.
Sector m can be averaged to interference estimate in frequency domain, spatial domain and/or time domain.For example, sector m can be averaged to interference estimate on multiple reception antenna.Sector m can use the interference estimate of any one of averaging in scheme following to all sub-bands to average:
Wherein I
mthe average interference power of sector m in (n) is-symbol cycle n, and P
nomrepresent the nominal received power of each subcarrier.I
m(k, n) and I
mn () is linear unit in equation (3) to (5).Equation (3) is for arithmetic average, and equation (4) is for geometric average, and average for based on SNR of equation (5).Utilize arithmetic average, several larger interference estimated value can make average interference power deflection.Geometric average and the larger interference estimated value that on average can suppress several sub-band based on SNR.
Sector m also can carry out filtering to average interference power in multiple symbol period, to improve the quality of interference estimate.The filter of available finite impulse response (FIR) (FIR) filter, infinite impulse response (IIR) filter or other type a certain realizes filtering.Sector m obtains in each measuring period and records interference I
meas, m, described measuring period may cross over one or more symbol period.
Sector m produces OTAOSI report based on the interference recorded.In an embodiment, the interference volume recorded is turned to the position of predetermined number, it is included in OTAOSI report.In another embodiment, OTAOSI report comprise single position, institute's rheme indicate the interference recorded be higher than or lower than interference threshold.In another embodiment, OTAOSI report comprises multiple position, and institute's rheme passes on the interference recorded relative to multiple interference threshold.For the sake of clarity, below describing is for the embodiment of OTAOSI report reception and registration relative to the interference recorded of two interference thresholds.
In an embodiment, OTAOSI report comprises two binary system OSI positions, and it is called OSI position 1 and OSI position 2.
These OSI positions can set as follows:
Equation (6a)
Equation (6b)
Wherein I
nom_thspecified interference threshold, I
high_thhigh interference threshold value, and I
high_th> I
nom_th.OSI position 1 indicate the interference recorded be higher than or lower than specified interference threshold.OSI position 2 indicate the interference recorded be higher than or lower than high interference threshold value.For this embodiment, think sector m in the interference recorded lower than I
nom_thtime observe low interference, in the interference recorded at I
nom_thwith I
high_thbetween time observe high interference, and be more than or equal to I in the interference recorded
high_thtime observe excess interference.OSI position 2 can be used for indicating the excess interference of being observed by sector.
In another embodiment, OTAOSI report comprises the single OSI value with Three Estate.OSI value can be set as follows:
Equation (7)
The signal with three signaling points can be used to troop transmission three grades of OSI values.For example, available symbols 1+j0 or e
j0send OSI value " 0 ", available symbols 0+j1 or e
j pi/2send OSI value " 1 ", and available symbols-1+j0 or e
j πsend OSI value " 2 ".
Or sector m can obtain thermal noise interference (IOT) recorded, the ratio of its total interference power observed for sector m and thermal noise power.Total interference power can be calculated as mentioned above.By disconnecting reflector the noise at measuring receiver place estimates thermal noise power.Can be the specific operating point of Systematic selection.Higher operating point allows terminal to transmit with average higher power level.But high operating point has adverse effect to link budget, and may be undesirable.For given maximum transmission power and given data rate, permissible greatest path loss increases along with IOT and reduces.Very high operating point is also undesirable, because system can be changed into be disturbed restriction, this is the situation that through-put power increase can not be converted into received SNR increase.In addition, very high operating point adds the possibility of system instability.Under any circumstance, sector m can set its three grades of OSI values as follows:
Equation (8)
Wherein IOT
nom_thspecified IOT threshold value, and IOT
high_thit is high IOT threshold value.
Also can use and delayedly produce OSI position/value, the instruction of excess interference can not be triggered too continually.For example, OSI position 2 only can exceed high threshold in the interference recorded and lasts the first duration T
w1in (such as, 50 milliseconds) time, is set as " 1 ", and only can last the second duration T in the interference recorded lower than high threshold
w2in time, is reset to " 0 ".As another example, OSI position 2 can only in the interference recorded more than the first high threshold I
high_th1in time, is set as " 1 ", and only can drop to the second high threshold I in the interference recorded subsequently
high_th2be reset to time following " 0 ", wherein I
high_th1> I
high_th2.
Sector m is broadcasted it and may the OTAOSI report containing two OSI positions or three grades of OSI values be controlled with the interference carried out based on user.Sector m can broadcast OTAOSI report in every way.In one embodiment, sector m broadcasts OTAOSI report in each measuring period.In another embodiment, sector m broadcasts OSI position 1 in each measuring period, and broadcasts OSI position 2 when being only set as " 1 " in this position.Sector m also can cover to the OSI report of the terminal broadcast in sector m from other sector to obtain better OSI.
Sector m also sends its ISOSI and reports to carry out network interference control to nearby sectors.ISOSI report can contain: two OSI positions; Three grades of OSI values; Through the interference recorded that quantification or non-quantized are the position of predetermined number; IOT
nom_th, IOT
high_thand IOT
meas, m; I
nom_th, I
high_thand I
meas, m; Path loss; Institute's received power of the terminal from sector m recorded at other sector place; Certain out of Memory; And combination.Sector m can send ISOSI report in each measuring period or only when observing excess interference or when meeting certain other standard.Also sector m can be asked during the OSI position that another sector terminal of q in the q of sector indicates it cannot receive from sector m to send ISOSI report.Each sector uses the ISOSI from nearby sectors to report with the transfer of data controlled from terminal in its sector, to alleviate the inter-sector interference at nearby sectors place.
Network interference can be realized in every way control.Some embodiments that network interference controls hereafter are described.
In one embodiment, sector m is based on the terminal in the ISOSI report schedule sector received from nearby sectors.For example, if excess interference is observed in one or more nearby sectors, so sector m can reduce the through-put power used by terminal disadvantageous in sector m, makes these terminals produce less interference to other sector.Disadvantageous terminal has little channel gain (or large path loss) to serving sector, and needs to carry out transmitting to realize given signal to interference and noise ratio (SNR) at serving sector place with high power levels.Disadvantageous terminal is positioned to usually comparatively close to nearby sectors, and large transmission power level causes the high inter-sector interference to this nearby sectors.In addition, can at ISOSI report and its measured value (such as, IOT
meas, mor the received power recorded) the unfavorable terminal of middle identification.In addition, in some cases, ISOSI report can provide the information about the identification of terminal when not having more multiple terminals, to allow to utilize distinct methods described below.
Sector m can identify unfavorable terminal based on each quality metric such as such as channel gain, pilot frequency intensity, carrier-to-noise ratio (C/N), channel gain ratios.These quality metrics are estimated in other transmission that can send based on pilot tone and/or terminal.For example, the estimation channel gain of terminal and channel gain threshold value can be compared, and terminal can be regarded as unfavorable terminal at its channel gain lower than during channel gain threshold value.Sector m reduces the through-put power used by unfavorable terminal by following operation: (1) reduces the large transmission power restriction that can be applicable to terminal; (2) the comparatively low transmission power restriction that can be applicable to terminal is reduced; (3) assign the lower SNR of needs and thus need the unfavorable terminal with lower data speed compared with low transmission power; (4) do not dispatch unfavorable terminal and carry out transfer of data; Or (5) use certain other method or Combination of Methods.
In another embodiment, sector m uses the inter-sector interference that access control is observed to alleviate nearby sectors.For example, if excess interference is observed in one or more nearby sectors, so sector m reduces in sector by following operation and now uses the number of terminal: the new terminal transmitted is carried out in (1) denied access request on reverse link; (2) the unfavorable terminal of denied access; (3) to the de-assign terminals being allowed to access; (4) to unfavorable de-assign terminals; Or (5) use some other admittance control method.The ISOSI that the speed of de-assign terminals also can be from nearby sectors is reported to (interference level such as, observed), observes the number of the nearby sectors of excess interference and/or the function of other factor.Therefore sector m can regulate the loading to sector based on the ISOSI report from nearby sectors.
In another embodiment, sector m in the mode of the inter-sector interference alleviating nearby sectors and observe to the terminal assignments Traffic Channel in sector.For example, one group of Traffic Channel can have been assigned in each sector, and described sector again can by described group of traffic-channel assignment to the terminal in sector.One group of common Traffic Channel also can be shared in nearby sectors, and it is orthogonal with the described group of Traffic Channel being assigned to each sector.If excess interference is observed in one or more nearby sectors, so sector m can to the Traffic Channel in group common described in the unfavorable terminal assignments in sector m.These unfavorable terminals can not cause any interference to nearby sectors subsequently, because the Traffic Channel in common group is orthogonal with the Traffic Channel being assigned to nearby sectors.As another example, one group of Traffic Channel can have been assigned in each sector, and described sector can by described group of traffic-channel assignment to the stronger terminal of tolerable interference levels.If excess interference is observed in one or more nearby sectors, so sector m can be assigned to the Traffic Channel of the stronger terminal in nearby sectors to the unfavorable terminal assignments in sector m.
Also the one or more combination in above method can be utilized, to provide flexibility or for other reason.
For the sake of clarity, majority described above is for a sector m.The interference that each sector in system all can perform as described for sector m above controls.
Also the interference that can realize in every way based on user controls.In one embodiment, by allowing terminal to realize controlling based on the interference of user from its through-put power of main regulation based on the OTAOSI report received from nearby sectors.
Although it should be noted that Fig. 2 describe utilize Network Based and based on user interference control both, only can utilize a kind of method.For example, frame 212 and 214 can be omitted, and provide all interference to control by only utilizing network interference to control (such as, discussed relative to frame 222-228).
Fig. 3 shows the process 300 for disturbing control performed by a terminal u.The OTAOSI that terminal u receives from nearby sectors reports (frame 312).Then determine whether nearby sectors observes excess interference, whether such as OSI position 2 is set as " 1 " (frame 314).If answer is "Yes", so terminal u reduces its through-put power (frame 316) with larger decline step sizes and/or with faster rate.Such as, otherwise determine whether nearby sectors observes high interference, OSI position 1 whether is set as " 1 " and whether OSI position 2 is set as " 0 " (frame 318).If answer is "Yes", so terminal u reduces its through-put power (frame 320) with specified decline step sizes and/or with nominal rated speed.Otherwise terminal u increases its through-put power (frame 322) with specified rising step sizes and/or with nominal rated speed.
Fig. 3 shows that the embodiment being in the inter-sector interference in one of three possibility grades (low, high and excessive) observed by nearby sectors is passed in wherein OTAOSI report.Process 300 can through expansion with the level of interference covering arbitrary number.Substantially, terminal u through-put power can: (1) reduces the decline step-length (such as, for the larger decline step-length of higher interference) relevant with the interference volume that nearby sectors is observed higher than during given threshold value when the interference recorded; And/or (2) are when the interference recorded is lower than the rising step-length (such as, for the larger rising step-length of lower interference) increasing the interference volume inversely related observed with nearby sectors during given threshold value.Also can based on the current transmission power level of such as (for example) terminal, determine step sizes and/or regulations speed relative to other parameters such as the channel gains of the nearby sectors of the channel gain of serving sector, previously OTAOSI report.
Terminal u can regulate its through-put power based on the OTAOSI report from one or more nearby sectors.Terminal u can estimate the channel gain of each sector based on the pilot tone received from sector.Terminal u then can derive the channel gain ratio of each nearby sectors as follows:
Equation (9)
Wherein g
ns, in () is the channel gain between terminal u and nearby sectors i;
G
ssn () is the channel gain between terminal u and serving sector; And
R
in () is the channel gain ratio of nearby sectors i.
In one embodiment, terminal u identifies the strongest nearby sectors with the maximum channel ratio of gains.Terminal u then regulates its through-put power based on the OTAOSI report only coming the strongest nearby sectors since then.In another embodiment, terminal u regulates its through-put power based on the OTAOSI report from sectors all in OSI group.This OSI group can contain: (1) T the strongest nearby sectors, wherein T >=1; (2) have and exceed the nearby sectors of channel gain than the channel gain ratio of threshold value; (3) there is the nearby sectors of the channel gain exceeding channel gain threshold value; (4) nearby sectors in the neighbor list broadcasted by serving sector is included in; Or the nearby sectors of (5) certain other group.Terminal u then can regulate its through-put power based on the OTAOSI report from nearby sectors multiple in OSI group in every way.For example, terminal u can reduce its through-put power when observing high interference or excess interference in the arbitrary nearby sectors in OSI group.As another example, terminal u can determine the transmission power adjustment to each nearby sectors in OSI group, and then can combine and regulate to obtain overall transmission power the adjustment of nearby sectors all in OSI group.
Substantially, can in conjunction with the transmission power adjustment of various power control scheme execution for disturbing control.For the sake of clarity, specific power control scheme is hereafter described.For this power control scheme, the through-put power being assigned to the Traffic Channel of terminal u can be expressed as:
P
dch(n)=P
ref(n)+Δ P (n), equation (10)
Wherein P
dchn () is the through-put power of Traffic Channel in interval n update time;
P
refn () is the reference power level in interval n update time; And
Δ P (n) is the through-put power increment in interval n update time.
Transmission power level P
dch(n) and P
ref(n) and through-put power increment Delta P (n) with decibel (dB) for unit provides.
Reference power level P
refn () realizes the amount of through-put power for needed for the target SNR of given transmission, it can be sent by terminal u signaling on control channel or certain other transmission.Adjustable reference power level and target SNR such as, to realize the performance level of wanting for given transmission, 1% packet error rate (PER).If the transfer of data in Traffic Channel and given transmission observe similar Noise and Interference characteristic, so transfer of data receive SNRSNR
dchn () can be estimated as:
SNR
dch(n)＝SNR
target+ΔP(n)。Equation (11)
Can report based on the OTAOSI from nearby sectors, regulate through-put power increment Delta P (n) with certainty mode, probability mode or certain alternate manner.Described through-put power can (1) use certainty metering needle to disturbance level adjustment difference amount; Or (2) probability of use metering needle regulates with different rates disturbance level.Exemplary certainty and probability transmission power adjustment scheme are hereafter described.For brevity, below describe for the transmission power adjustment for the OSI position received from a nearby sectors.This OSI position can be OSI position 1 or 2.
Fig. 4 shows the process 400 being used for regulating the through-put power of terminal u in certainty mode.Initially, terminal u process is reported (frame 412) from the OTAOSI of nearby sectors and is determined that OSI position is " 1 " or " 0 " (frame 414).If OSI position is " 1 ", indicate the interference observed to exceed interference threshold, so terminal u determines the reduction of through-put power, or decline step size, delta P
dn(n) (frame 422).Can based on last update time interval through-put power increment Delta P (n-1) and the channel gain of nearby sectors compare r
nsn () determines Δ P
dn(n).Through-put power increment is then reduced Δ P by terminal u
dn(n) (frame 424).On the contrary, if OSI position is " 0 ", so terminal u determines the recruitment of through-put power, or rising step size, delta P
up(n) (frame 432).Also can based on Δ P (n-1) and r
nsn () determines Δ P
up(n).Through-put power increment is then increased Δ P by terminal u
up(n) (frame 434).Transmission power adjustment in frame 424 and 434 can be expressed as:
equation (12)
After frame 424 and frame 434, through-put power increment Delta P (n) is limited in admissible through-put power incremental range (frame 442) by terminal u, as follows:
Δ P (n) ∈ [Δ P
min, Δ P
max], equation (13)
Wherein Δ P
minthe minimum transmission power increment that can be allowed for Traffic Channel, and
Δ P
maxit is the maximum transmission power increment that can be allowed for Traffic Channel.
The through-put power increment of terminals all in sector is limited in the through-put power incremental range as shown in equation (13) and interference in sector can be maintained in acceptable level.Minimum transmission power increment Delta P is regulated by control loop
min, to guarantee that each terminal can meet the requirement of service quality (QoS) grade belonging to terminal.Can different rates and/or with the Δ P of asynchronous minor adjustment different QoS grade of growing up
min.
Terminal u is then based on through-put power increment Delta P (n) and reference power level P
refthe through-put power P of (n) computing service channel
dchn (), as Suo Shi equation (10) (frame 444).Terminal u can by through-put power P
dchn () is limited in maximal power level P
maxinterior (frame 446), as follows:
Equation (14)
Terminal u uses through-put power P
dchn () carries out the transfer of data in Traffic Channel.
In one embodiment, Δ P
dn(n) and Δ P
upn () step sizes is calculated as:
Δ P
dn(n)=f
dn(Δ P
dn, min, Δ P (n-1), r
ns(n), k
dn), and equation (15a)
Δ P
up(n)=f
up(Δ P
up, min, Δ P (n-1), r
ns(n), k
up), equation (15b)
Wherein Δ P
dn, minwith Δ P
up, minΔ P respectively
dn(n) and Δ P
upthe minimum value of (n):
K
dnand k
upΔ P respectively
dn(n) and Δ P
upthe scale factor of (n); And
F
dn() and f
up() is calculate Δ P respectively
dn(n) and Δ P
upthe function of (n).
Definable function f
dn() is to make Δ P
dn(n) and Δ P (n-1) and r
nsn () both are relevant.If high interference or excess interference are observed in nearby sectors, so the larger channel gain of (1) nearby sectors causes larger Δ P
dn(n) and the higher value of (2) Δ P (n-1) causes larger Δ P
dn(n).Definable function f
up() is to make Δ P
up(n) and Δ P (n-1) and r
ns(n) both inversely relateds.If low interference is observed in nearby sectors, so the larger channel gain of (1) nearby sectors causes less Δ P
up(n) and the higher value of (2) Δ P (n-1) causes less Δ P
up(n).
Fig. 4 shows the process for an OSI position from a nearby sectors.When excess interference is observed in nearby sectors, higher value can be used for Δ P
dn(n).When high interference is observed in nearby sectors, smaller value can be used for Δ P
dn(n).By such as using different scale factor k for high interference and excess interference respectively
dn1and k
dn2obtain different decline step sizes.
Fig. 5 shows the process 500 being used for regulating the through-put power of terminal u in probability mode.Initially, terminal u process is reported (frame 512) from the OTAOSI of nearby sectors and is determined that OSI position is " 1 " or " 0 " (frame 514).If OSI position is " 1 ", so terminal u is such as based on Δ P (n-1) and r
nsn () determines the probability P r reducing through-put power
dn(n) (frame 522).The value x of terminal u then between Stochastic choice 0.0 and 1.0, wherein x is the stochastic variable (frame 524) be evenly distributed between 0.0 and 1.0.If x is less than or equal to Pr
dnn (), as determined in frame 526, so its through-put power increment is reduced Δ P by terminal u
dn(frame 528).Otherwise, if x is greater than Pr
dnn (), so through-put power increment is maintained present level (frame 530) by terminal u.
If OSI position is " 0 " in frame 514, so terminal u is such as based on Δ P (n-1) and r
nsn () determines the probability P r increasing through-put power
up(n) (frame 532).The value x of terminal u then between Stochastic choice 0.0 and 1.0 (frame 534).If x is less than or equal to Pr
upn (), as determined in frame 536, so its through-put power increment is increased Δ P by terminal u
up(frame 538).Otherwise, if x is greater than Pr
upn (), so through-put power increment is maintained present level (frame 530) by terminal u.Transmission power adjustment in frame 528,530 and 538 can be expressed as:
equation (16)
Δ P
dnwith Δ P
upcan be identical value (such as, 0.25dB, 0.5dB, 1.0dB etc.) or can be different value.
After frame 528,530 and 538, terminal u limits through-put power increment, as Suo Shi equation (13) (frame 542).Terminal u is then based on through-put power increment Delta P (n) and reference power level P
ref(n) computes transmit power P
dchn (), as Suo Shi equation (10) (frame 544), and by through-put power P
dchn () is limited in maximal power level further, as Suo Shi equation (14) (frame 546).Terminal u uses through-put power P
dchn () carries out transfer of data on a traffic channel.
In one embodiment, following calculating probability:
P
rdn(n)=f '
dn(Pr
dn, min, Δ P (n-1), r
ns(n), k
dn), and equation (17a)
Pr
up(n)=f '
up(Pr
up, minΔ P (n-1), r
ns(n), k
up), equation (17b)
Wherein Pr
dn, minand Pr
up, minpr respectively
dn(n) and Pr
upthe minimum value of (n);
And f '
dn() and f '
up() is calculate Pr respectively
dn(n) and Pr
upthe function of (n).
Definable function f '
dn() is to make Pr
dn(n) and Δ P (n-1) and r
nsn () both are relevant.If high interference or excess interference are observed in nearby sectors, so the larger channel gain of (1) nearby sectors causes larger Pr
dn(n) and the higher value of (2) Δ P (n-1) causes larger Pr
dn(n).Larger Pr
dnn () causes the high probability reducing through-put power.Definable function f '
up() is to make Pr
up(n) and Δ P (n-1) and r
ns(n) both inversely relateds.If low interference is observed in nearby sectors, so the larger channel gain of (1) nearby sectors causes less Pr
up(n) and the higher value of (2) Δ P (n-1) causes less Pr
up(n).Less Pr
upn () causes the lower probability increasing through-put power.
Fig. 5 shows the process for an OSI position from a nearby sectors.When excess interference is observed in nearby sectors, higher value can be used for Pr
dn(n).When high interference is observed in nearby sectors, smaller value can be used for Pr
dn(n).Such as, by using different scale factor k for high interference and excess interference respectively
dn1and k
dn2obtain different decline probability and thus obtain different power adjustments speed.
Substantially, various function can be used to calculate Δ P
dn(n) and Δ P
up(n) step sizes and Pr
dn(n) and Pr
up(n) probability.Defined function can be carried out based on the such as various parameter such as current transmission power, current transmission power increment, current OTA OSI report, previously OTAOSI report, channel gain.The various power control characteristics of each function on the distribution of the through-put power increment of terminal in the rate of convergence of such as transmission power adjustment and system may have different impacts.Also step sizes and probability can be determined based on look-up table or by certain other method.
Also transmission power adjustment mentioned above and/or access control can be performed based on QoS rank, owner priority rank etc.For example, use the terminal of emergency services and control terminal may have higher priority, and possibility can so that speed and/or larger step sizes regulate through-put power faster than normal priority user.As another example, the speed that the terminal sending speech business can be slower and/or less step sizes regulate through-put power.
Terminal u also can change the mode regulating through-put power based on the previous OTAOSI report received from nearby sectors.For example, terminal u reduces its through-put power with specific decline step sizes and/or special speed when can report excess interference in nearby sectors, and reduces through-put power with larger decline step sizes and/or faster rate when can continue report excess interference in nearby sectors.Alternatively or in addition, the Δ P in equation (13) is ignored when terminal u can continue report excess interference when excess interference is reported in nearby sectors or in nearby sectors
min.
The various embodiments of the power control alleviating inter-sector interference have been described above.Also otherwise can perform interference and power control, and this within the scope of the invention.
In one embodiment, each sector is reported to its OTAOSI of the terminal broadcast in nearby sectors, as mentioned above.The through-put power broadcast OTAOSI report of available abundance is to realize desired covering in nearby sectors.Each terminal can receive the OTAOSI report from nearby sectors and report with these OTAOSI of mode process realizing fully low false detection rate and fully low false-alarm probability.Error detection refers to the fault detecting OSI position or the value transmitted.False alarm refers to the error detection to received OSI position or value.For example, if use BPSK transmit OSI position, so terminal can declare received OSI position: (1) if detect OSI position lower than first threshold, OSI position <-B
th, be then " 0 "; (2) if detect OSI position and exceed Second Threshold, OSI position >+B
th, be then " 1 "; And (3) are in other cases ,+B
th> OSI position>=-B
th, be then room.Terminal comes compromise false detection rate and false-alarm probability by regulating for the threshold value detected usually.
In another embodiment, each sector is also to the OTAOSI report that the terminal broadcast in its sector is produced by nearby sectors.The agency of nearby sectors is served as in each sector therefore.This embodiment can guarantee that each terminal reliably can receive the OTAOSI report produced by nearby sectors, reports because terminal can receive these OTAOSI from serving sector.This embodiment is applicable to wherein sector fully and covers the unequal dissymmetric network layout of size.Less sector usually with lower power level transmission, and is reported may reliably can not be received by the terminal in nearby sectors by the OTAOSI of these less sector broadcasts.Less sector then will be had benefited from broadcasting its OTAOSI by nearby sectors and report.
Substantially, given sector m can broadcast by other sector of arbitrary number and wherein any one OTAOSI report produced.In an embodiment, the OTAOSI that sector m broadcast is produced by the sector in the neighbor list of sector m reports.Neighbor list can be formed by network operator or in some other manner.In another embodiment, the OTAOSI that sector m broadcast is produced by all sectors be included in existing group of terminal in sector m reports.Each terminal can maintenance package containing using group with the showing of all sectors of terminal communication.When terminal hands over to another sector from a sector, Xiang Xianyong group can add sector or remove sector from existing group.In another embodiment, the OTAOSI that sector m broadcast is produced by all sectors be included in the candidate set of terminal in sector m reports.Each terminal can maintenance package containing can with the candidate set of all sectors of terminal communication.Can such as add sector based on channel gain and/or certain other parameter to candidate set or remove sector from candidate set.In another embodiment, the OTAOSI that sector m broadcast is produced by all sectors be included in the OSI group of terminal in sector m reports.The OSI group of each terminal can be defined as mentioned above.
As mentioned above, system can only utilize the interference based on user control or only utilize network interference to control.Interference based on user controls more easily to implement, because each sector and each terminal can autonomous action.Network interference controls the performance that can provide improvement, controls because perform interference with coordination mode.System also can utilize based on both user and network interference control simultaneously.System also can utilize the interference based on user to control always, and only can call network interference control when observing excess interference.System also can call each type interference for different operating conditions controls.
Fig. 6 shows the power control mechanism 600 that can be used for the through-put power of terminal 120x in regulating system 100.Terminal 120x communicates with serving sector 110x and can to produce to 1101 nearby sectors 110a and disturbs.Power control mechanism 600 comprises: (1) reference loop 610, and it operates between terminal 120x and serving sector 110x; (2) second servo loop 620, it operates between terminal 120x and nearby sectors 110a is to 1101.Reference loop 610 and second servo loop 620 can operate simultaneously but can upgrade by different rates, and wherein reference loop 610 is the loop faster than second servo loop 620.For brevity, Fig. 6 only shows that loop 610 and 620 resides in the part at terminal 120x place.
Reference loop 610 regulates reference power level P
ref(n), make the given transmission recorded at 110x place, serving sector receive SNR as far as possible close to target SNR.For reference loop 610, serving sector 110x estimate given transmission institute receives SNR, received SNR and target SNR are compared, and based on the comparison result generation transmitting power control (TPC) order.Each TPC command can be: the UP order that (1) commander reference power level increases; Or the DOWN order that (2) commander reference power level reduces.Serving sector 110x transmits TPC command to terminal 120x on forward link (cloud mass 670).
Terminal 120x place, TPC command processor 642 detects the TPC command of serving sector 110x transmission and provides TPC decision-making.Each TPC decision-making can be UP decision-making when received TPC command is regarded as UP order, or is DOWN decision-making when received TPC command is regarded as DOWN order.Reference power regulon 644 regulates reference power level based on TPC decision-making.Unit 644 can for each UP decision-making by P
refn () increases rising step-length, and for each DOWN decision-making by P
refn () reduces decline step-length.Transmission (TX) data processor 660 bi-directional scaling given transmission is to realize reference power level.Terminal 120x sends given transmission to serving sector 110x.
Due to the path loss on reverse link (cloud mass 640), decay and multipath effect (usually changing in time), and especially for mobile terminal, given transmission receive SNR continued jitters.Reference loop 610 attempt reverse link channel condition exist change time by given transmission receive SNR maintain target SNR or its near.
Second servo loop 620 regulates the through-put power P being assigned to the Traffic Channel of terminal 120x
dchn (), makes to use power level high as far as possible for Traffic Channel, inter-sector interference is remained in acceptable level simultaneously.For second servo loop 620, each nearby sectors 110 receives transmission on reverse link, estimate nearby sectors from the terminal observes other sector to inter-sector interference, based on interference estimate produce OTAOSI report, and in other sector terminal broadcast OTAOSI report.
Terminal 120x place, OSI report processor 652 receives the OTAOSI report of nearby sectors broadcast and provides the OSI of detection to report to through-put power incremental adjustments unit 656.Channel estimator 654 receives the pilot tone from service and nearby sectors, estimates the channel gain of each sector, and provides the estimation channel gain of all sectors to unit 656.Unit 656 is determined the channel gain ratio of nearby sectors and is carried out further adjustment through-put power increment Delta P (n) based on the OSI report detected and channel gain ratio, as mentioned above.Unit 656 can implement the process 300,400 and/or 500 shown in Fig. 3 to Fig. 5.Transmit power calculation unit 658 is based on the reference transmission level P from unit 644
ref(n), from through-put power increment Delta P (n) of unit 656 and possible other factor computes transmit power P
dch(n).TX data processor 660 uses through-put power P
dchn () carries out transfer of data to serving sector 110x.
Fig. 6 shows and can be used for disturbing the exemplary power control mechanism controlled.Also can otherwise and/or with performing to disturb from above-mentioned different parameter control.
The block diagram of the embodiment of Fig. 7 displaying terminal 120x, serving BS 110x and neighbor base station 110y.For the sake of clarity, below describe supposition and use the power control mechanism 600 shown in Fig. 6.
On reverse link, at terminal 120x place, TX data processor 710 pairs of reverse link (RL) business datums and control data is encoded, alternation sum sign map provide data symbol.Data symbol and frequency pilot sign are mapped on suitable sub-band and symbol period by modulator (Mod) 712, perform OFDM modulation, and provide sequence of complex-valued chips at where applicable.Transmitter unit (TMTR) 714 pairs of chip sequences regulate (such as, being converted to simulation, amplification, filtering and up-conversion) and produce reverse link signal, and described reverse link signal is transmitted via antenna 716.
At serving BS 110x place, multiple antenna 752xa to 752xt receives the reverse link signal of self terminal 120x and other terminal.Each antenna 752x provides the signal of reception to corresponding acceptor unit (RCVR) 754x.The signal that each acceptor unit 754x receives it regulates (such as, filtering, amplification, down-conversion and digitlization), performs OFDM demodulation, and provide the symbol of reception at where applicable.RX spatial processor 758 performs receiver spatial manipulation to the institute's receiving symbol from all acceptor units, and is provided as the data symbol estim of the estimated value of institute's data symbol.RX data processor 760x goes to map to data symbol estim, release of an interleave and decoding and be provided for terminal 120x and current other terminal of being served by base station 110x through decoded data.
Can be similar to above for the process performed described by reverse link for forward link transmissions.The process of the transmission on forward direction and reverse link is specified by system usually.
Interference and power are controlled, at serving BS 110x place, RX spatial processor 758x estimates the SNR received of terminal 120x, estimates the inter-sector interference that base station 110x observes, and by for the SNR estimated value of terminal 110x and interference estimate (the interference I such as, recorded
meas, m) be provided to controller 770x.Controller 770x produces the TPC command for terminal 120x based on the SNR estimated value of terminal and target SNR.Controller 770x can produce OTAOSI report and/or ISOSI report based on interference estimate.The ISOSI that controller 770x also can receive from nearby sectors via communication (Comm) unit 774x reports.TPC command, to report by TX data processor 782x and TX spatial processor 784x process for the OTAOSI report of base station 110x and the possible OTAOSI for other sector, regulated by transmitter unit 754xa to 754xt, and transmit via antenna 752xa to 752xt.ISOSI report from base station 110x can be sent to nearby sectors via communication unit 774x (such as, via back haul link or other wired communications links).
At neighbor base station 110y place, multiple antenna 752ya to 752yt receives the reverse link signal of self terminal 120x and other terminal.Each antenna 752y provides the signal of reception to corresponding acceptor unit (RCVR) 754ya to 754yt.The signal that each acceptor unit 754y receives it regulates (such as, filtering, amplification, down-conversion and digitlization), performs OFDM demodulation, and provide the symbol of reception at where applicable.RX spatial processor 758y estimates the viewed inter-sector interference of base station 110y, and provides interference estimate to controller 770y.RX data processor 760y goes to map to data symbol estim, release of an interleave and decoding and be provided for terminal 120x and current other terminal of being served by base station 110y through decoded data.Controller 770y can produce OTAOSI report and/or ISOSI report based on interference estimate.Treated and the terminal be broadcast in system of OTAOSI report.ISOSI report can be sent to nearby sectors via communication unit 774y.OTAOSI for base station 110y reports and the possible OTAOSI for other sectors reports by TX data processor 782y and TX spatial processor 784y process.
At terminal 120x place, antenna 716 receive from service and neighbor base station forward link signal and provide received signal to acceptor unit 714.Received signal is regulated and digitlization by acceptor unit 714, and is processed further by demodulator (Demod) 742 and RX data processor 744.Processor 744 provide for the TPC command sent by serving BS 110x of terminal 120x and broadcasted by neighbor base station OTAOSI report.Channel estimator in demodulator 742 estimates the channel gain of each base station.Controller 720 detects the TPC command that receives and upgrades reference power level based on TPC decision-making.Controller 720 also regulates the through-put power of Traffic Channel based on the OTAOSI report received from neighbor base station and service and the channel gain of neighbor base station.Controller 720 provides the through-put power of the Traffic Channel being assigned to terminal 120x.The through-put power bi-directional scaling data symbol that processor 710 and/or modulator 712 provide based on controller 720.
The operation of controller 720,770x and 770y command terminal 120x and base station 110x and each processing unit of 110y place respectively.These controllers also can perform the various functions controlled for interference and power.For example, controller 720 can implement any or all unit 642 to 658 shown in Fig. 6 and/or the process shown in Fig. 3 to Fig. 5 300,400 and/or 500.The controller 770 of each base station 110 can implement all or a part of of the process 200 in Fig. 2.The data of memory cell 722,772x and 772y difference storage control 720,770x and 770y and program code.Scheduler 780x dispatch terminal communicates for base station 110x, and also such as assigns Traffic Channel based on the ISOSI report from neighbor base station to through dispatch terminal.
Fig. 8 shows the equipment being applicable to disturb control.Equipment comprises the device 800 for receiving ISOSI report and the device 802 for adjusting the transfer of data of terminal in sector based on received ISOSI report.
Fig. 9 shows the equipment being applicable to provide interference to control.Equipment comprises for generation of the device 900 of ISOSI report and the device 902 for reporting to one or more sectored transmissions ISOSI.In some cases, described generation device can comprise the device for producing different I SOSI report for each sector, and described transmitting device can be coupled to wired connection, such as back haul link.
Interference control technology described herein is implemented by various method.For example, these technology may be implemented in hardware, software or its combination.For hardware embodiments, the processing unit controlled for performing interference in base station may be implemented in one or more application-specific integrated circuit (ASIC)s (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, electronic installation, through design to perform in other electronic unit of function described herein or its combination.The processing unit controlled for performing interference in end also may be implemented in one or more ASIC, DSP, processor, electronic installation etc.
For Software implementations, the module (such as, program, function etc.) of available execution function described herein is implemented to disturb control technology.Software code can be stored in memory cell (memory cell 722 such as, in Fig. 7,772x or 772y) and to be performed by processor (such as, controller 720,770x or 770y).Memory cell may be implemented in processor or processor outside.
There is provided the previous description of disclosed embodiment to enable those skilled in the art manufacture or to use the present invention.Those skilled in the art understands the various amendments for these embodiments by being easy to, and General Principle defined herein can be applied to other embodiment when not departing from the spirit or scope of the present invention.Therefore, do not wish that the present invention is limited to the embodiment of showing herein, but the present invention should meet the widest range consistent with the principle disclosed and novel feature herein.
Claims (26)
1. the equipment in sector, it comprises:
Memory;
Controller, it is coupled with described memory and is configured to the terminal broadcast jamming report in nearby sectors and adjusts the transfer of data of terminal in described sector based at least one jamming report received from least one nearby sectors, at least one jamming report wherein said comprises the information of instruction based on the measured value at least one nearby sectors place described at least one terminal in described terminal, wherein, at least one jamming report described comprises multiple position, described multiple reception and registration are for the interference recorded relative to multiple indivedual interference threshold of at least one nearby sectors described.
2. equipment according to claim 1, the threshold value wherein at least one terminal in described terminal observed at least one nearby sectors place described for the described jamming report pointer of at least one nearby sectors described and measured value.
3. equipment according to claim 1, refuses to the access of described sector or to the de-assign terminals being allowed to access described sector when any one being configured to further at least one nearby sectors described of wherein said controller observes excess interference.
4. equipment according to claim 1, wherein said controller is configured to the loading based on controlling from least one jamming report described at least one nearby sectors described described sector further.
5. equipment according to claim 1, wherein said controller is configured to further by adjusting based on the scheduling changing terminal described in described sector for transfer of data from least one jamming report described at least one nearby sectors described.
6. equipment according to claim 1, the data rate that wherein said controller is configured to reduce when observing excess interference by any one at least one nearby sectors described at least one in terminal described in described sector further adjusts.
7. equipment according to claim 1, wherein said controller is configured to further by adjusting to the described terminal assignments Traffic Channel in described sector based on from least one jamming report described at least one nearby sectors described.
8. equipment according to claim 1, wherein, the transfer of data adjusting terminal described in described sector comprise based on from least one jamming report described at least one nearby sectors described and also based in owner priority rank, levels of quality of service one of at least, control the terminal access to described sector.
9. an equipment, it comprises:
For the device to the terminal broadcast jamming report in nearby sectors;
For receiving the device of at least one jamming report from least one nearby sectors, at least one jamming report described of at least one nearby sectors wherein said comprises the information of instruction based on the measured value at least one nearby sectors place described of at least one terminal in the terminal of sector, wherein, at least one jamming report described comprises multiple position, and described multiple reception and registration are for the interference recorded relative to multiple indivedual interference threshold of at least one nearby sectors described; And
For based on the device adjusting the transfer of data of terminal in sector from least one jamming report described at least one nearby sectors described.
10. equipment according to claim 9, the device of the wherein said transfer of data for adjusting terminal described in described sector comprises
Dispatching device, it is for based on the described terminal come for transfer of data from least one jamming report described at least one nearby sectors described in scheduling said sector.
11. equipment according to claim 9, the device of the wherein said transfer of data for adjusting terminal described in described sector comprises
Assign device, its for based on from least one jamming report described at least one nearby sectors described to the described terminal assignments Traffic Channel in described sector.
12. equipment according to claim 9, the threshold value wherein at least one terminal in described terminal observed at least one nearby sectors place described for the described jamming report pointer of at least one nearby sectors described and measured value.
13. equipment according to claim 9 wherein, device for the transfer of data adjusting terminal described in described sector comprise for based on from least one jamming report described at least one nearby sectors described and also based in owner priority rank, levels of quality of service one of at least, control the device of the terminal access to described sector.
14. 1 kinds of methods controlling the communication in wireless communication system, it comprises:
To the terminal broadcast jamming report in nearby sectors;
Receive at least one jamming report from least one nearby sectors, at least one jamming report wherein said comprises the information of instruction based on the measured value at least one nearby sectors place described of at least one terminal in the terminal of sector, wherein, at least one jamming report described comprises multiple position, and described multiple reception and registration are for the interference recorded relative to multiple indivedual interference threshold of at least one nearby sectors described; And
Based on the transfer of data adjusting terminal in sector from least one jamming report described at least one nearby sectors described.
15. methods according to claim 14, described in the described sector of wherein said adjustment, the transfer of data of terminal comprises
Based on the described terminal come for transfer of data from least one jamming report described at least one nearby sectors described in scheduling said sector.
16. methods according to claim 14, described in the described sector of wherein said adjustment, the transfer of data of terminal comprises
Based on from least one jamming report described at least one nearby sectors described to the described terminal assignments Traffic Channel in described sector.
17. methods according to claim 14, the threshold value wherein at least one terminal in described terminal observed at least one nearby sectors place described for the described jamming report pointer of at least one nearby sectors described and measured value.
18. methods according to claim 14, wherein, the transfer of data adjusting terminal described in described sector comprise based on from least one jamming report described at least one nearby sectors described and also based in owner priority rank, levels of quality of service one of at least, control the terminal access to described sector.
19. 1 kinds of methods, it comprises:
Produce the first jamming report indicating the measured value of the interference caused by least one terminal of at least one other sector at a sector place, wherein, produce described jamming report to be included in multiple symbol period and to carry out filtering to average interference power, wherein, described first jamming report comprises multiple position, and described multiple reception and registration are for the interference recorded relative to multiple indivedual interference threshold of described sector;
Described first jamming report of the measured value of described interference is indicated at least one other sector transmission described; And
The second jamming report is sent to the terminal at least one other sector described.
20. methods according to claim 19, wherein said first jamming report is the measured value observed at described sector place at least one terminal described of pointer also.
21. methods according to claim 19, it comprises further:
Via wired connection to the first jamming report described at least one other sector transmission described.
22. methods according to claim 19, wherein said wired connection comprises back haul link.
23. 1 kinds of equipment, it comprises:
For generation of the device of the first jamming report of measured value indicating the interference caused by least one terminal of at least one other sector at a sector place, wherein, device for generation of described first jamming report comprises the device for carrying out filtering in multiple symbol period to average interference power, wherein, described first jamming report comprises multiple position, and described multiple reception and registration are for the interference recorded relative to multiple indivedual interference threshold of described sector;
For indicating the device of described first jamming report of the measured value of described interference at least one other sector transmission described;
For the device to terminal transmission second jamming report at least one other sector described.
24. equipment according to claim 23, wherein said first jamming report is the measured value observed at described sector place at least one terminal described of pointer also.
25. equipment according to claim 23, wherein said emitter comprises the device for carrying out launching via wired connection.
26. equipment according to claim 25, wherein said wired connection comprises back haul link.
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| CN201110346069.6A CN102395154B (en) | 2005-03-15 | 2006-03-15 | Interference in wireless communication system controls |
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| US66217605P | 2005-03-15 | 2005-03-15 | |
| US60/662,176 | 2005-03-15 | ||
| US11/158,584 | 2005-06-21 | ||
| US11/158,584 US8942639B2 (en) | 2005-03-15 | 2005-06-21 | Interference control in a wireless communication system |
| US11/293,686 US8848574B2 (en) | 2005-03-15 | 2005-12-02 | Interference control in a wireless communication system |
| US11/293,686 | 2005-12-02 | ||
| PCT/US2006/009551 WO2006099548A1 (en) | 2005-03-15 | 2006-03-15 | Interference control in a wireless communication system |
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| CN2010102561996A Division CN101902775B (en) | 2005-03-15 | 2006-03-15 | Interference control method and device in a wireless communication system |
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| CN200680016027.3A Active CN101171814B (en) | 2005-03-15 | 2006-03-15 | Interference control in a wireless communication system |
| CN200680015654.5A Active CN101171811B (en) | 2005-03-15 | 2006-03-15 | Interference control method in wireless communication system and equipment |
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| CN200680016027.3A Active CN101171814B (en) | 2005-03-15 | 2006-03-15 | Interference control in a wireless communication system |
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| UA (4) | UA101826C2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101646180B (en) * | 2008-08-07 | 2011-12-14 | 电信科学技术研究院 | Method, system and device for transmitting and processing load information |
| JP5085481B2 (en) * | 2008-09-22 | 2012-11-28 | 株式会社エヌ・ティ・ティ・ドコモ | Transmission power control method, mobile communication system, and radio base station |
| US20120087395A1 (en) * | 2009-06-10 | 2012-04-12 | Mieszko Chmiel | Code Block Selection Combining in Multi point Reception Up-Link Data Transfer |
| CN101998642B (en) * | 2009-08-19 | 2014-08-20 | 株式会社Ntt都科摩 | Inter-cell interference coordination method and station |
| CN101986752B (en) * | 2010-11-04 | 2013-03-13 | 杭州市电信规划设计院有限公司 | Control method of uplink power of long term evolution (LTE) system |
| EP2557863B1 (en) * | 2011-08-10 | 2013-10-16 | Alcatel Lucent | Method, apparatus and computer program for a mobile transceiver and for a base station transceiver |
| US8811451B2 (en) * | 2011-10-04 | 2014-08-19 | Qualcomm Incorporated | Apparatus and method for selection of a set of cells for interference cancellation in a wireless communication system |
| JP2013251858A (en) * | 2012-06-04 | 2013-12-12 | Ntt Docomo Inc | Wireless communication method, wireless communication system, wireless base station and user terminal |
| CN103582129B (en) * | 2012-07-18 | 2017-04-19 | 华为技术有限公司 | Terminal scheduling method, device and system |
| CN117641546B (en) * | 2024-01-25 | 2024-06-18 | 深圳国人无线通信有限公司 | Method and base station for controlling uplink power of cell edge UE |
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| CN1214182A (en) * | 1996-12-27 | 1999-04-14 | Ntt移动通信网株式会社 | Call acceptance control method for CDMA mobile radio communication system and mobile station device |
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| GB2378858A (en) * | 2001-08-18 | 2003-02-19 | Motorola Inc | Minimisation of interference in cellular communications systems |
| CN1432221A (en) * | 2000-03-30 | 2003-07-23 | 高通股份有限公司 | Method and appts. for controlling transmissions of communications system |
| US20040229615A1 (en) * | 2003-05-12 | 2004-11-18 | Avneesh Agrawal | Soft handoff with interference cancellation in a wireless frequency hopping communication system |
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2006
- 2006-03-15 UA UAA201009905A patent/UA101826C2/en unknown
- 2006-03-15 UA UAA201005953A patent/UA96369C2/en unknown
- 2006-03-15 CN CN200680016027.3A patent/CN101171814B/en active Active
- 2006-03-15 CN CN200680015654.5A patent/CN101171811B/en active Active
- 2006-03-15 UA UAA200711353A patent/UA94706C2/en unknown
- 2006-03-15 UA UAA200711352A patent/UA94402C2/en unknown
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| CN1214182A (en) * | 1996-12-27 | 1999-04-14 | Ntt移动通信网株式会社 | Call acceptance control method for CDMA mobile radio communication system and mobile station device |
| EP0889663B1 (en) * | 1996-12-27 | 2004-10-27 | NTT DoCoMo, Inc. | Call acceptance control method for cdma mobile radio communication system and mobile station device |
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| US20040229615A1 (en) * | 2003-05-12 | 2004-11-18 | Avneesh Agrawal | Soft handoff with interference cancellation in a wireless frequency hopping communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| UA96369C2 (en) | 2011-10-25 |
| CN101171811A (en) | 2008-04-30 |
| UA94706C2 (en) | 2011-06-10 |
| UA94402C2 (en) | 2011-05-10 |
| UA101826C2 (en) | 2013-05-13 |
| CN101171814B (en) | 2015-06-10 |
| CN101171814A (en) | 2008-04-30 |
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