Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
Fig. 1 shows the network topology structure figure according to a specific embodiment of the present invention.In Fig. 1, comprise base station 11, mobile radio station 12-1,12-2 and 12-3.Wherein, mobile radio station 12-1 is positioned at the center of 11 jurisdiction districts 10, base station, and mobile radio station 12-3 is positioned at the edge of sub-district 10, mobile radio station 12-2 from the distance of base station 11 between mobile radio station 12-1 and 12-3 between the distance of base station 11.
Ground is without loss of generality, frequency bandwidth with orthogonal frequency division multiple access system is 10MHz, comprising 864 subcarriers is example, and, base station 11 is the time-frequency resource allocating that unit is used to send detectable signal with 18 adjacent subcarriers of physics, claim that the adjacent subcarrier of these 18 physics is that (Sounding Resource Unit, SRU), then system comprises 48 available like this detection Resource Units to a detection Resource Unit.Base station 11 can be divided into a plurality of frequency resource groups with these 48 available detection Resource Units according to first pre-defined rule.This first pre-defined rule can dispose when system initialization, also can be by the higher level equipment of base station 11 base station controller untill further notice base station 11 for example, perhaps also can be base station informing base station 11, and keep identical frequency resource to divide in each base station by other; In addition, the particular content of first pre-defined rule is not limit, and hereinafter will be elaborated to this.
Fig. 2 shows the division exemplary plot of the frequency resource of a specific embodiment of the present invention.In Fig. 2, base station 11 is divided into two frequency resource group FP11 and FP12 according to first pre-defined rule with available detection Resource Unit.FP11 comprises 1 to 36 SRU, and FP12 comprises 37 to 48 SRU.Wherein, the time-frequency resource allocating among the FP11 is given those down channel qualities mobile radio station preferably, also is frequency resource group FP11 correspondence down channel quality preferably.Usually for the mobile radio station that is positioned at cell centre, base station 11 is better to the down channel quality of this mobile radio station, for example the mobile radio station 12-1 among Fig. 1.Time-frequency resource allocating among the FP12 is given the relatively poor mobile radio station of those down channel qualities, also is the corresponding relatively poor down channel quality of frequency resource group FP12.Usually for the mobile radio station that is positioned at cell edge, base station 11 is relatively poor to the down channel quality of this mobile radio station, for example the mobile radio station 12-3 among Fig. 1.For fear of the interference of minizone, usually the running time-frequency resource among the FP12 is divided into a plurality of parts, neighbor cell uses different parts, to avoid the interference between the mobile radio station at cell edge place.For example, as shown in Figure 3, for hexagonal cellular cell, running time-frequency resource among the FP12 can be divided into three parts, FP12-1, FP12-2, FP12-3, wherein FP12-1 are used in the sub-district had jurisdiction over, base station 11 10, and its six adjacent sub-districts are used alternatingly FP12-2 and FP-3 respectively.If FP12-2 is used in the sub-district that base station 11 is had jurisdiction over 10, then its six adjacent sub-districts are used alternatingly FP12-1 and FP-3 respectively; If FP12-3 is used in the sub-district that base station 11 is had jurisdiction over 10, then its six adjacent sub-districts are used alternatingly FP12-1 and FP12-2 respectively.
Fig. 2 and situation shown in Figure 3 constitute an example of first pre-defined rule.Those of ordinary skill in the art will be understood that the content of first pre-defined rule do not limit, as long as can make base station 11 and adjacent base station coordinate the frequency of utilization resource, avoids producing presence of intercell interference.
Its mobile radio station branch of having jurisdiction over that is used in the base station that Fig. 4 shows according to a specific embodiment of the present invention is used in the method flow schematic diagram of the running time-frequency resource that sends detectable signal.Below in conjunction with Fig. 1 and Fig. 2, the process of base station 11 for the running time-frequency resource of mobile radio station 12-1,12-2 and 12-3 distribution transmission detectable signal is elaborated.
At first, in step S401, the down channel quality index signal that base station 11 receives from mobile radio station 12.
Then, in step S402, base station 11 is given mobile radio station 12 according to the downlink signal quality index signal from mobile radio station 12 with the corresponding time-frequency resource allocating in the frequency resource group of correspondence.
Particularly, with mobile radio station 12-1 is example, base station 11 is according to the down channel quality index signal from mobile radio station 12-1 that receives, the down channel quality of judging mobile radio station 12-1 is better, then will give mobile radio station 12-1, and be used for mobile radio station 12-1 and send detectable signal with the corresponding time-frequency resource allocating among down channel quality is corresponding preferably the frequency resource group FP11.
Particularly, the down channel quality index signal can comprise multiple, for example, and downstream signal interference-to-noise ratio, the perhaps average signal strength of down receiving signal indication (RSSI) etc.Be higher than the indication of a predetermined threshold or downstream signal average signal strength as downstream signal interference-to-noise ratio and be higher than a predetermined threshold, can judge that then the downlink signal quality of mobile radio station 12-1 is better from mobile radio station 12-1.
Be example with mobile radio station 12-3 again, base station 11 is according to the down channel quality index signal from mobile radio station 12-3 that receives, the down channel quality of judging mobile radio station 12-3 is relatively poor, then give mobile radio station 12-3, be used for mobile radio station 12-3 and send detectable signal the time-frequency resource allocating among the FP12-1 among the frequency resource group FP 12.Particularly, be lower than the indication of a predetermined threshold or downstream signal average signal strength as downstream signal interference-to-noise ratio and be lower than a predetermined threshold, can judge that then the down channel quality of mobile radio station 12-3 is relatively poor from mobile radio station 12-3.
As the variation example that frequency resource shown in Figure 2 is divided, also can comprise the SRU of all operable frequency resources 1 to 48 among FP11, the FP12.Wherein, FP12-1 comprises 1 to 16 SRU, and FP12-2 comprises 17 to 32 SRU, and FP12-3 comprises 33 to 48 SRU.Another example of this 0 formation, first pre-defined rule.
Fig. 5 shows according to the detection Resource Unit of another embodiment of the present invention and divides schematic diagram.Still the frequency bandwidth with orthogonal frequency division multiple access system is 10MHz, and comprising 864 subcarriers is example, and the adjacent subcarrier of per 18 physics is one and surveys Resource Unit.In Fig. 5, whole frequency resource is divided into three part FP21, FP22 and FP23, and wherein, FP21 comprises 1 to 12 SRU, and FP22 comprises 13 to 36 SRU, and FP23 comprises 37 to 48 SRU.Wherein, the time-frequency resource allocating among the FP21 is given those down channel qualities mobile radio station preferably, also is frequency resource group FP21 correspondence down channel quality preferably.Time-frequency resource allocating among the FP22 is given those down channel qualities time good mobile radio station, also is the corresponding time good down channel quality of frequency resource group FP22.Time-frequency resource allocating among the FP23 is given the relatively poor mobile radio station of those down channel qualities, also is the corresponding relatively poor down channel quality of frequency resource group FP22.Wherein, for fear of the interference of neighbor cell, the frequency resource among the FP23 is divided into three part FP23-1, FP23-2 and FP23-3 again.Wherein, FP23-1 comprises 37 to 40 SRU, and FP23-2 comprises 41 to 44 SRU, and FP23-3 comprises 45 to 48 SRU.
For each frequency resource group FP, define a frequency duplex factor as one FC, its implication is for each frequency resource group, base station 11 available frequencies resources account for the ratio of frequency resources all in this frequency resource group.For frequency resource group FP21, wherein whole frequency resources can be used in base station 11, and its frequency duplex factor as one FC equals 1.For frequency resource group FP22, can be example with 13 to 28 SRU wherein with base station 11, then frequency duplex factor as one FC is 2/3.For frequency resource group FP23, can with FP23-1 wherein example with base station 11, then frequency duplex factor as one FC is 1/3.
Have under the situation of different frequency duplex factor as one in definition frequency duplex factor as one and each frequency resource group, the time-frequency resource allocating in the frequency resource group that the multiplexing factor is higher of base station 11 is given has the mobile radio station of down channel quality preferably.Nature, the time-frequency resource allocating in the frequency resource group that the multiplexing factor is lower is given the mobile radio station with relatively poor down channel quality.
For example, for mobile radio station 12-1, the down channel quality preferably that has of mobile radio station 12-1 is judged according to the down channel quality indication information from mobile radio station 12-1 that receives in base station 11, and the time-frequency resource allocating among then that the multiplexing factor is the higher frequency resource group FP21 is given mobile radio station 12-1.For mobile radio station 12-2, base station 11 is according to the down channel quality indication information from mobile radio station 12-2 that receives, judge the down channel quality preferably that has of mobile radio station 12-2, then give mobile radio station 12-2 with corresponding time-frequency resource allocating among the inferior high frequency resource group FP22 of the multiplexing factor, because 13 to 28 SRU can be used among the FP22 in base station 11, then select time-frequency resource allocating to give mobile radio station 12-2 the SRU of base station 11 from 13 to 28.For mobile radio station 12-3, base station 11 is according to the down channel quality indication information from mobile radio station 12-3 that receives, judge the relatively poor down channel quality that has of mobile radio station 12-3, the time-frequency resource allocating among the FP23-1 among then that the multiplexing factor is the lower frequency resource group FP23 is given mobile radio station 12-3.
Alternatively, with mobile radio station 12-2 is example, the step S42 of Fig. 4 can also comprise following step: at first, base station 11 is according to the down channel quality index signal from mobile radio station 12-2 that receives, judge among the frequency resource group FP22 corresponding whether available running time-frequency resource is arranged with this down channel quality, if there is not available running time-frequency resource among the FP22, then will give mobile radio station 12-2 than the time-frequency resource allocating that this corresponding frequency resource group has among the frequency resource group FP23 of the multiplexing factor of low frequency more.
Alternatively, the situation for Fig. 2 or frequency resource shown in Figure 5 are divided can also comprise the continuous and/or discontinuous frequency resource block of physics in each frequency resource group.Alternatively, the discontinuous frequency resource block of physics is for carrying out gained after the conversion according to the 3rd pre-defined rule to the continuous frequency resource block of physics.Need to prove that the particular content of the 3rd pre-defined rule is not limit, as long as the frequency resource block that physics is continuous is transformed to the discontinuous frequency resource block of physics, simultaneously, base station 11 keeps the consistency of conversion with adjacent base station.For example, as comprising which frequency resource block among the FP23 in the base station 11, then also to comprise these several frequency resource block in the frequency resource group of the correspondence of its adjacent base station.
For example, frequency resource group FP21 distributes to has the mobile radio station of down channel quality preferably, then it can comprise the frequency resource block that physics is continuous, and this is because under the down channel quality good conditions, can obtain the scheduling gain by frequency selective scheduling.Frequency resource group FP23 distributes to the mobile radio station with relatively poor down channel quality, then it can comprise the discontinuous frequency resource block of physics, this is because for the relatively poor mobile radio station of down channel quality, base station 11 can distribute some discrete frequency resources to send upward signal to mobile radio station, so that the acquisition frequency diversity, thereby obtain better signal quality.Comprise frequency resource block and the discontinuous frequency resource block of physics that physics is continuous among the frequency resource group FP22, because the down channel quality scope of frequency resource group FP22 correspondence is between the down channel quality scope of the frequency resource group FP21 correspondence down channel quality scope corresponding with frequency resource group FP23.
Owing to comprise the continuous and discontinuous frequency resource block of physics among the frequency resource group FP22, each mobile radio station both can be given with the time-frequency resource allocating among the frequency resource group FP22 randomly in base station 11, also can give each mobile radio station with the time-frequency resource allocating among the frequency resource group FP22 according to second pre-defined rule.Below the various situations of second pre-defined rule are elaborated.
Ground is without loss of generality, with mobile radio station 12-2 and down channel quality index signal is that downstream signal interference-to-noise ratio (SINR) is an example, the down channel quality scope of the corresponding SINR>SINR_T1 of FP21 then, the down channel quality scope of the corresponding SINR<SINR_T2 of FP23, FP22 is corresponding to the down channel quality scope of SINR_T2≤SINR≤SINR_T1, wherein SINR_T1>SINR_T2.
At first, SINR_T2≤SINR-2≤SINR_T1 is judged according to the down channel quality index signal SINR-2 from mobile radio station 12-2 in base station 11, then determines to give mobile radio station 12-2 with the time-frequency resource allocating among the frequency resource group FP2.
Then, base station 11 is given mobile radio station 12-2 according to second pre-defined rule with the time-frequency resource allocating among the frequency resource group FP2.
With the traffic delay parameter is example, and then second pre-defined rule is that the more sensitive mobile radio station of traffic delay is given with the discontinuous frequency resource allocation of physics in base station 11, and the frequency resource allocation that physics is continuous is given the more insensitive mobile radio station of traffic delay.Particularly, base station 11 judges according to the type of service of report before the mobile radio station 12-2 whether the business of mobile radio station 12-2 belongs to the more sensitive business of delay.If the business of mobile radio station 12-2 is to postpone more sensitive business, then mobile radio station 12-2 is given with the discontinuous frequency resource allocation of physics among the frequency resource group FP22 in base station 11.If the business of mobile radio station 12-2 is to postpone more insensitive business, then base station 11 frequency resource allocation that physics among the frequency resource group FP22 is continuous is given mobile radio station 12-2.
With the translational speed is example, and then second pre-defined rule is base station 11 with the discontinuous frequency resource allocation of physics to translational speed mobile radio station faster, and the frequency resource allocation that physics is continuous is given the slower mobile radio station of translational speed.Particularly, base station 11 judges whether the translational speed of mobile radio station 12-2 is very fast, and for example translational speed surpasses a predetermined threshold speed.If the translational speed of mobile radio station 12-2 is very fast, then mobile radio station 12-2 is given with the discontinuous frequency resource allocation of physics among the frequency resource group FP22 in base station 11.If the translational speed of mobile radio station 12-2 is slower, then base station 11 frequency resource allocation that physics among the frequency resource group FP22 is continuous is given mobile radio station 12-2.It is multiple that base station 11 estimates that the mode of the translational speed of mobile radio station 12-2 has, and for example base station 11 can be estimated the translational speed of mobile radio station 12-2 according to positioning function; Perhaps base station 11 can be estimated the translational speed of mobile radio station 12-2 according to the time dependent cycle of estimating at certain subcarrier upper signal channel of range value.For a kind of situation in back, the range value of channel estimating changes soon in time, also is that the cycle is short, illustrates that the translational speed of mobile radio station 12-2 is very fast; The range value of channel estimating changes slowly in time, also be that the cycle is long, the translational speed that mobile radio station 12-2 is described is slower, the process of the translational speed of detailed estimation mobile radio station 12-2, can consult list of references 1:Doppler spread estimation for OFDM systems usingNewton polynomials, Ali, A.R.; Balalem, A.; Khanzada, T.; Machac, J.; Omar, A.; Radioelektronika, 200818th International Conference 24-25April2008Page (s): 1-4.
Fig. 6 shows and according to a specific embodiment of the present invention the continuous frequency resource block of physics is carried out the schematic diagram that conversion and frequency resource group are divided.The ground that is without loss of generality is the minimum particle size that the continuous frequency resource of physics is distributed in base station 11 with 4 SRU, be referred to as to survey the resource band (Sounding Resource Band, SRB).
In Fig. 6, continuous SRU1-4,9-12,17-20,25-28,33-36, the 41-44 of physics constitutes 6 SRB, be used for the distribution of centralized sounding channel, remaining SRU is that unit is transformed to the discontinuous frequency resource block of physics with SRU, is used for the distribution of distributed sounding channel.The conversion based on SRU shown in Fig. 6 is to be carried out one to remaining SRU and reorders.Need to prove that the order that rearranges shown in Fig. 6 only is an example, in fact, base station 11 can be according in proper order the continuous SRU of physics being arranged arbitrarily.Alternatively, conversion also can be carried out to frequency resource block based on subcarrier in base station 11.
In Fig. 6, whole available frequencies resource is divided into three frequency resource group FP31, FP32 and FP33.Wherein, frequency resource block SRU25-28,33-36 and 41-44 are divided into frequency resource group FP31, are used to distribute to down channel quality those mobile radio stations preferably; Frequency resource block SRU1-4,40,47,48,8,9-12,13,38,31,7,17-20,45,14,22,5 are divided into frequency resource group FP32, are used to distribute to down channel quality time those good mobile radio stations; Frequency resource block SRU23,37,39,21,16,15,30,6,46,32,24,29 is divided into frequency resource group FP33, is used for those relatively poor mobile radio stations of allocation of downlink channel quality.
Wherein, for fear of the interference of minizone, the frequency resource among the FP33 further is divided into three son group FP33-1, FP33-2 and FP33-3.Wherein, FP33-1 comprises frequency resource block SRU23,37,39,21; FP33-2 comprises frequency resource block SRU16,15,30,6; FP33-3 comprises frequency resource block SRU46,32,24,29.With network topology structure shown in Figure 3 is example, if FP33-1 is used in the sub-district that base station 11 is had jurisdiction over 10, its six adjacent sub-districts are used alternatingly FP33-2 and FP33-3 respectively.If FP33-2 is used in the sub-district that base station 11 is had jurisdiction over 10, then its six adjacent sub-districts are used alternatingly FP33-1 and FP33-3 respectively; If FP33-3 is used in the sub-district that base station 11 is had jurisdiction over 10, then its six adjacent sub-districts are used alternatingly FP33-1 and FP33-2 respectively.
Further, alternatively, the frequency resource block among the FP32 can further be divided into FP32-1, FP32-2 and FP32-3.Wherein, FP32-1 comprises frequency resource block SRU1-4,40,47,48,8; FP32-2 comprises frequency resource block SRU9-12,13,38,31,7; FP32-3 comprises frequency resource block SRU17-20,45,14,22,5.With network topology structure shown in Figure 3 is example, if (FP32-1+FP32-2) used in the sub-district that base station 11 is had jurisdiction over 10, its six adjacent sub-districts are used alternatingly (FP32-2+FP32-3), (FP32-1+FP32-3) respectively, as shown in Figure 7.If (FP32-1+FP32-3) used in the sub-district that base station 11 is had jurisdiction over 10, its six adjacent sub-districts are used alternatingly (FP32-2+FP32-3), (FP32-1+FP32-3) respectively.If (FP32-2+FP32-3) used in the sub-district that base station 11 is had jurisdiction over 10, its six adjacent sub-districts are used alternatingly (FP32-1+FP32-2), (FP32-1+FP32-3) respectively.By partial frequency multiplexing shown in Figure 7, can further reduce presence of intercell interference; Meanwhile, allow neighbor cell to exist under the situation of part interference, also improved the frequency resource utilance.
Alternatively, base station 11 is divided into running time-frequency resource in each frequency resource group by the mode of time division multiplexing, frequency division multiplexing, code division multiplexing or their any combination the sounding channel of a plurality of quadratures.For example, with OFDM is example, base station 11 can be defined as a sounding channel with the 13rd SRU of the 1st OFDM symbol by time-multiplexed mode, distribute to mobile radio station 12-2, be used for mobile radio station 12-2 and send detectable signal, the 13rd SRU of the 2nd OFDM symbol is defined as another detectable signal, and the mobile radio station of distributing to other is to send detectable signal.For another example, each SRU comprises 18 subcarriers, and the mode that base station 11 can be by frequency division multiplexing is defined as a sounding channel with the 2nd, 8,14 subcarrier of the 9th, 10,11,12 SRU, distributes to mobile radio station 12-2; Base station 11 is defined as a sounding channel with the 3rd, 9,15 subcarrier of 9,10,11,12 SRU, distributes to other mobile radio station.
Like this, by using the method in the foregoing description, base station 11 can be given the sounding channel or the distributed sounding channel of mobile radio station allocation set Chinese style according to actual needs, the inconsistent problem of the frequency distribution of the bearing downlink business that has overcome single distribution mechanism in the prior art and caused and the frequency distribution of the sounding channel of carrying detectable signal has improved the operational efficiency of system effectively.
More than each method embodiment of the present invention is described in detail, below the course of work of the resource allocation device of the running time-frequency resource that is used to its mobile radio station branch of having jurisdiction over to be used in to send detectable signal in the wireless communication network base station is elaborated.Fig. 8 shows the structural representation of a such resource allocation device 800.In Fig. 8, resource allocation device 800 comprises receiving system 801, distributor 802 and judgment means 803.Those of ordinary skill in the art will be understood that wherein only receiving system 801, distributor 802 are the necessary means of resource allocation device 800 of the present invention, and judgment means 803 is an option means.
Below in conjunction with Fig. 1, the process that the mobile radio station branch that the resource allocation device 800 that is arranged in base station 11 is had jurisdiction over for base station 11 is used in the running time-frequency resource that sends detectable signal is elaborated.
At first, base station 11 is divided into a plurality of frequency resource groups according to first pre-defined rule frequency resource that is used for its each mobile radio station transmission detectable signal of having jurisdiction over that it is available, and each frequency resource group is corresponding to a mass range of down channel quality.As shown in Figure 5 frequency resource group FP21, FP22 and FP23, wherein,, the time-frequency resource allocating among the FP21 is given those down channel qualities mobile radio station preferably, also is frequency resource group FP21 correspondence down channel quality preferably.Time-frequency resource allocating among the FP22 is given those down channel qualities time good mobile radio station, also is the corresponding time good down channel quality of frequency resource group FP22.Time-frequency resource allocating among the FP23 is given the relatively poor mobile radio station of those down channel qualities, also is the corresponding relatively poor down channel quality of frequency resource group FP22.Wherein, for fear of the interference of neighbor cell, the frequency resource among the FP23 is divided into three part FP23-1, FP23-2 and FP23-3 again.The implication of first pre-defined rule here is the same, does not repeat them here.
The down channel quality index signal that receiving system 801 receives from each mobile radio station 12, distributor 802 is given each mobile radio station 12 according to the down channel quality index signal from each mobile radio station 12 with the time-frequency resource allocating in the frequency resource group of correspondence then.For example, the down channel quality index signal that receiving system 801 receives from mobile radio station 12-1, distributor 802 is according to the down channel quality index signal, the down channel quality of judging mobile radio station 12-1 is better, then will give mobile radio station 12-1, and be used for mobile radio station 12-1 and send detectable signal with the corresponding time-frequency resource allocating among down channel quality is corresponding preferably the frequency resource group FP21.
Alternatively, have under the situation of different frequency duplex factor as one in each frequency resource group, time-frequency resource allocating in distributor 802 the frequency resource group that the multiplexing factor is higher is given has the mobile radio station of down channel quality preferably, and the implication of the multiplexing factor is with above described.At this moment, alternatively, judgment means 803 judges in the corresponding frequency resource group of the down channel quality from mobile radio station 12-1 that receives with receiving system 801 whether available running time-frequency resource is arranged, if do not have available running time-frequency resource in the frequency resource group corresponding with down channel quality, then distributor 802 will be given this mobile radio station 12-1 than the time-frequency resource allocating that this corresponding frequency resource group has in the frequency resource group of the multiplexing factor of low frequency more.
Alternatively, the situation for Fig. 2 or frequency resource shown in Figure 5 are divided can also comprise the continuous and/or discontinuous frequency resource block of physics in each frequency resource group.Alternatively, the discontinuous frequency resource block of physics is for carrying out gained after the conversion according to the 3rd pre-defined rule to the continuous frequency resource block of physics.Need to prove that the particular content of the 3rd pre-defined rule is not limit, as long as the frequency resource block that physics is continuous is split as the discontinuous frequency resource block of physics, simultaneously, base station 11 and adjacent base station keep consistency.For example, as comprising which frequency resource block among the FP23 in the base station 11, then also to comprise these several frequency resource block in the frequency resource group of the correspondence of its adjacent base station.
Comprise that in certain resource group under the situation of the continuous and discontinuous frequency resource block of physics, distributor 802 is given corresponding mobile radio station according to second pre-defined rule with the frequency resource allocation in this frequency resource group.
With the traffic delay parameter is example, and then second pre-defined rule is that distributor 802 is given the more sensitive mobile radio station of traffic delay with the discontinuous frequency resource allocation of physics, and the frequency resource allocation that physics is continuous is given the more insensitive mobile radio station of traffic delay.Particularly, giving mobile radio station 12-2 with distributor 802 with the frequency resource allocation among the frequency resource group FP22 is example, and distributor 802 judges according to the type of service of report before the mobile radio station 12-2 whether the business of mobile radio station 12-2 belongs to the more sensitive business of delay.If the business of mobile radio station 12-2 is to postpone more sensitive business, then distributor 802 is given mobile radio station 12-2 with the discontinuous frequency resource allocation of physics among the frequency resource group FP22.If the business of mobile radio station 12-2 is to postpone more insensitive business, then distributor 802 frequency resource allocation that physics among the frequency resource group FP22 is continuous is given mobile radio station 12-2.
With the translational speed is example, and then second pre-defined rule is a distributor 802 with the discontinuous frequency resource allocation of physics to translational speed mobile radio station faster, and the frequency resource allocation that physics is continuous is given the slower mobile radio station of translational speed.Particularly, giving mobile radio station 12-2 with distributor 802 with the frequency resource allocation among the frequency resource group FP22 is example, and distributor 802 judges whether the translational speed of mobile radio station 12-2 is very fast, and for example translational speed surpasses a predetermined threshold speed.If the translational speed of mobile radio station 12-2 is very fast, then distributor 802 is given mobile radio station 12-2 with the discontinuous frequency resource allocation of physics among the frequency resource group FP22.If the translational speed of mobile radio station 12-2 is slower, then distributor 802 frequency resource allocation that physics among the frequency resource group FP22 is continuous is given mobile radio station 12-2.The mode that distributor 802 obtains the translational speed of mobile radio station 12-2 has multiple, for example, determines the speed of mobile radio station according to the relation of the variation of the range value of channel estimating and changes in amplitude and distance.
Alternatively, distributor 802 can be divided into running time-frequency resource in each frequency resource group the sounding channel of a plurality of quadratures by the mode of time division multiplexing, frequency division multiplexing, code division multiplexing or their any combination.For example, with OFDM is example, distributor 802 can be defined as a sounding channel with the 13rd SRU of the 1st OFDM symbol by time-multiplexed mode, distribute to mobile radio station 12-2, be used for mobile radio station 12-2 and send detectable signal, the 13rd SRU of the 2nd OFDM symbol is defined as another detectable signal, and the mobile radio station of distributing to other is to send detectable signal.For another example, each SRU comprises 18 subcarriers, and the mode that distributor 802 can be by frequency division multiplexing is defined as a sounding channel with the 2nd, 8,14 subcarrier of the 9th, 10,11,12 SRU, distributes to mobile radio station 12-2; Distributor 802 is defined as a sounding channel with the 3rd, 9,15 subcarrier of 9,10,11,12 SRU, distributes to other mobile radio station.
More than the specific embodiment of the present invention is described.Need to prove, the invention is not restricted to the TDD system, so long as the up-downgoing channel has the wireless communication system of reciprocity, method of the present invention is all applicable.In addition, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various modification or modification within the scope of the appended claims.