CN102438323A - Radio communication device - Google Patents
Radio communication device Download PDFInfo
- Publication number
- CN102438323A CN102438323A CN2011102251621A CN201110225162A CN102438323A CN 102438323 A CN102438323 A CN 102438323A CN 2011102251621 A CN2011102251621 A CN 2011102251621A CN 201110225162 A CN201110225162 A CN 201110225162A CN 102438323 A CN102438323 A CN 102438323A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- sub
- district
- scheduling
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004891 communication Methods 0.000 title claims abstract description 52
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims description 21
- 238000012546 transfer Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 14
- 238000004088 simulation Methods 0.000 description 12
- 238000012545 processing Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000002452 interceptive effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005315 distribution function Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a radio communication device higher throughput per hour, which comprises a transmission path information acquiring unit and a scheduling unit. The transmission path information acquiring unit acquires interference power value from more than one antenna remote base station. The scheduling unit divides the plurality of antenna remote base stations into several groups according to the acquired interference power value. The time difference between a first timing scheduled during a first period and a second timing scheduled during a second period is determined to be above a third period. The first period is a communication period within the subdistrict of a first group, while the second period is a communication period within the subdistrict of a second group. The third period comprises a period obtaining the interference power value from the remote base station of the subdistrict of the second group.
Description
Technical field
The present invention relates to radio communication.
Background technology
In cellular system, the dispersion that has radio section to leave, through 1 base band part a plurality of radio sections are connected with baseband portion is provided with the type base station.For example be provided with in the scheduling (user selects and channel allocation) of a plurality of sub-districts of type base station in initial dispersion, imagination is implemented the scheduling of a plurality of one-piece type base stations in the past simultaneously.That is, implement the scheduling of adjacent a plurality of sub-districts with same timing.
Patent documentation 1: TOHKEMY 2009-206945 communique
But; Can between neighbor cell, implement scheduling simultaneously by the channel information that existing cellular system utilizes if use; Be under the situation simultaneously in a plurality of neighbor cells then in the timing of implementing; Become the distribution of mutual selfdiscipline channel, many free times that which sub-district all do not had the waste of allocated channel take place.In addition, owing to bring the user terminal of interference to be selected simultaneously each other at neighbor cell, so become the lower scheduling result of frequency utilization efficient.
Summary of the invention
The purpose of a certain viewpoint of the present invention provides a kind of radio communication device that can realize higher throughput.
In order to address the above problem, about the radio communication device of a technical scheme of the present invention comprises that transmission path information obtains portion and scheduling portion.Transmission path information obtains portion and obtains the interference performance number of the interference state of expression transmission path from a plurality of remote base stations of the antenna more than 1 that comprise.Scheduling portion is according to interfering performance number; For a short time divide into a plurality of groups with what a plurality of remote base stations formed respectively; To carry out between the first phase scheduling first regularly and second the time difference decision between regularly of this first scheduling after regularly, that carry out the second phase be between the third phase more than; Between the above-mentioned first phase be in first group the sub-district that belongs in above-mentioned group, can communicate by letter during; The above-mentioned second phase be in second group the sub-district that belongs in above-mentioned group, can communicate by letter during, comprise between the above-mentioned third phase form the remote base station belong to this sub-district of second group obtain the above-mentioned interference performance number during.
Description of drawings
Fig. 1 is the piece figure of the radio communication device of the relevant execution mode of expression.
Fig. 2 is the piece figure of the physical layer signal handling part of the relevant execution mode of expression.
Fig. 3 is the figure of the expression carrier sense result's that uses up link a scheduling example regularly.
Fig. 4 is the figure of a scheduling example regularly of the expression received power measurement result of using down link.
Fig. 5 is the figure of a scheduling example regularly of each cell set of expression.
Fig. 6 is the figure of an example of the interference coverage area of expression base station and user terminal.
Fig. 7 is scheduling another routine figure regularly of each cell set of expression.
Fig. 8 is the figure of an example of expression analog result.
Embodiment
Below, with reference to accompanying drawing the radio communication device of relevant execution mode of the present invention is at length explained.In addition, in following execution mode, be made as about the part of having given identical label and carry out same action, and omit the explanation of repetition.
In addition; In this execution mode; The imagination single carrier transmits and records and narrates; But for transmitting, use this OFDM that user terminal multiplexed system on frequency direction and time direction also can be adopted equally in addition for the multicarrier of representative with OFDM (Orthogonal Frequency Division Multiplexing, Orthodoxy Frequency Division Multiplex transmits).Time division duplex) or FDD (Frequency Division Duplex: FDD) in addition, about not special qualification of multichannel multiplexing method of link up and down, can be used in TDD (Time Division Duplex:.
With reference to Fig. 1 the radio communication device of relevant this execution mode is described.
About the radio communication device 100 of present embodiment comprises a plurality of remote base stations (open a り and go out the base station) 150 and central control unit 101.Remote base station 150 comprises the antenna 151 and simulation part 152 more than 1.Central control unit 101 comprises physical layer signal handling part 102, scheduling portion 103 and network interface portion 104.In the example of Fig. 1, till (N is the natural number more than 2), N remote base station 150 is connected on the central control unit 101 from remote base station 150-1 to remote base station 150-N.
Physical layer signal handling part 102 corresponds respectively to a plurality of remote base stations 150 and has equal number, in the example of Fig. 1, and N physical layer signal handling part 102 till having from physical layer signal handling part 102-1 to physical layer signal handling part 102-N.In addition, also can a plurality of physical layer signal handling parts 102 physically be installed to same DSP (Digital Signal Processor: digital signal processor) upward carry out processing separately.Details about physical layer signal handling part 102 is narrated with reference to Fig. 2 in the back.
Information as the received power measurement result of representing down link; For example be to represent whether the received power of down link surpasses the information of the threshold value of regulation in XGP (eXtended Global Platform) system; In IEEE802.16m, be the information of expression CINR (Carrier to Interference plus Noise Ratio: carrier power is to the interaction noise power ratio).In addition, in 3GPP LTE, by MCS (Modulation and Coding Scheme: the information of index etc. Modulation and Coding Scheme) from user terminal requests.Through these information, can infer the degree that interfere the minizone.In addition, in other wireless communication systems, also interfere the information of degree of power just passable so long as can infer the minizone of carrying out the channel that data transmit, it with what kind of form is notified can.
Then, with reference to Fig. 2 physical layer signal handling part 102 is at length described.
Comprise physical layer signal handling part 102 digital signal Return Reception Dept. 201, Data Detection portion 202, transmission path information obtain portion 203, data generation portion 204 and digital signal and send handling part 205.
Digital signal Return Reception Dept. 201 comprises propagation path equalizer, de-mapping device, decoder, comprise as required serial converter, FFT (Fast Fourier Transform: fast Fourier transform) arithmetic unit, parallel/serial converters, receive weighting multiplier, descrambler, separate bit interleaver etc.Digital signal Return Reception Dept. 201 is from simulation part 152 receiving digital signals of remote base station 150, decodes, descrambling, separates bit interleave, demodulation, serial conversion, FFT, parallel/serial converted etc., information extraction position.
Transmission path information obtains portion 203 and receives information bit from digital signal Return Reception Dept. 201, calculates the interference performance number of each remote base station 150.In addition, transmission path information obtains portion 203 and also can obtain the information of the received power measurement result of the down link of representing each user terminal in the sub-district through the information bit that receives from digital signal Return Reception Dept. 201.
Digital signal is sent handling part 205 and is had mapper, encoder, comprises scrambler, bit interleaver, serial converter, IFFT (Inverse Fast Fourier Transform: the high speed inverse Fourier transform) arithmetic unit, parallel/serial converters, transmission weighting multiplier as required.And digital signal is sent handling part 205 and is received signal bit sequences from data generation portion 204, encodes, scrambling, bit interleave, modulation, serial conversion, at a high speed contrary FFT, parallel/serial converted etc., generates digital signal.
In addition; Have at remote base station 150 under the situation of the antenna number more than two, digital signal Return Reception Dept. 201 or digital signal are sent handling part 205 and also can be comprised and be used for using AAA (Adaptive Array Antenna: AAA weighted calculation portion and the multiplier adaptive array antenna) handled.AAA handles as long as make the high specific of desired wave maximizes power synthetic (MRC:Maximum Ratio Combining: maximum ratio is synthetic) or make and interferes zero general method such as sunken of minimum power just passable; So omit detailed explanation here; No matter but be what kind of method, bring influence ground to use can both for this execution mode.
Then, with reference to Fig. 3 and Fig. 4 the scheduling of being set by scheduling portion 103 is described.The situation that Fig. 3 representes to use the carrier sense result of up link to dispatch, the situation that Fig. 4 representes to use the information of the received power measurement result of expression down link to dispatch.
The scheduling of each sub-district is; Carrier sense result based on up link; If the carrier sense result's of the up link of certain channel interference performance number is more than the threshold value of regulation; Then to this channel distributing user terminal not, interfere performance number less than the situation of the threshold value of regulation under distributing user terminal and communicating.
At this moment, also can carry out, also can consider fairness and communication opportunity is provided equably whole user terminals based on the size of the communication request of user terminal to the system of selection of the user terminal of channel allocation.In addition, obtain under the situation of information of received power measurement result that portion 203 obtained the down link of representing each user terminal, also can use this information to be implemented by the standard of the more user terminal of amount of interference not selecting in transmission path information.User choosing method in the scheduling of each sub-district is that what kind of method can so long as the standard of the interference that side in the information of the received power measurement result of the carrier sense result of such use expression up link and down link or both sides avoid the minizone gets final product.
The carrier sense of the up link of k cell set regularly begins after 301 in the scheduling of (k-1) individual cell set.Therefore, will regularly 301 time differences 314 (Δ t_k) till the scheduling timing 302 of k cell set be represented with formula (1) from the scheduling of (k-1) individual cell set.
[numerical expression 1]
Δt_k≥l_ulcs_k+l_us_k+l_ntf_k (1)
Here; L_ulcs_k belongs to during the carrier sense of up link of sub-district of k cell set 311; L_us_k be select from the user who is present in the user who selects among the user terminal more than 1 in the sub-district to communicate during 312, l_ntf_k is used for scheduling result to the result of user terminal notice scheduling between notice day 313.In addition, preferably time difference more than 314 is guaranteed to be in the scheduling of different districts group interval regularly.
In addition, as shown in Figure 4, also same under the situation of down link with the situation of up link, the scheduling of (k-1) individual cell set regularly 401 is set at the different moment with the scheduling timing 402 of k cell set.Will regularly 401 time differences 415 (Δ t_k) till the scheduling timing 402 of k cell set be represented with formula (2) from the scheduling of (k-1) individual cell set.
[numerical expression 2]
Δt_k≥l_dlcs_k+l_fb_k+l_us_k+l_ntf_k (2)
Here, l_dlcs_k is during the received power of received power of measuring the down link of user terminal is measured 411, and l_fb_k is that the received power measurement result of user terminal is during the feedback of base station feedback 412.In addition, under the situation of the received power measurement result of using down link, too, preferably time difference more than 415 is guaranteed to be in the scheduling interval regularly of different districts group.
In addition, implement to satisfy the relation of formula (3) under the situation of scheduling in the information of the received power measurement result of carrier sense result who uses the expression up link and down link.
[numerical expression 3]
Δt_k≥max(l_ulcs_k，l_dlcs_k+l_fb_k)+l_us_k+l_ntf_k (3)
In the case, depend on during the carrier sense of up link 311 or received power measure during 411 and feedback during in 412 during long side decide the time difference.
Then, with reference to Fig. 5 the group technology of sub-district and a scheduling example regularly of each cell set are described.
As shown in Figure 5, according to each cell set, in same cell set, periodically implement scheduling with the set time interval 521 till being timed to next scheduling regularly from scheduling arbitrarily (below be also referred to as scheduling interval).In addition, implement scheduling with the reiteration of first to K cell set.If with the time difference 522-1 of Δ t_1 be made as from the scheduling of K cell set regularly 501-K to the scheduling of first cell set time till the 501-1 regularly, the formula (4) below then scheduling interval 521 needs to satisfy.
[numerical expression 4]
In addition; In the use under the situation of the carrier sense result of the line link system that implements to dispatch; If during establishing the carrier sense of up link of whole sub-districts, the user select during and scheduling result between notice day the needed time be respectively l_ulcs, l_us and l_ntf, then cell set is counted K suc as formula (5) such expression.
[numerical expression 5]
K≤T/(l_ulcs+l_us+l_ntf)(5)
Equally; Under the situation of the system that the information enforcement of the received power measurement result of using the expression down link is dispatched; Be respectively l_dlcs_k and l_fb_k with the feedback of the measurement result of received power during needed if establish during the received power of whole user terminals is measured, then cell set is counted K suc as formula (6) such expression.
[numerical expression 6]
K≤T/(l_dlcs+l_fb+l_us+l_ntf)(6)
And then, implement under the situation of scheduling in the information of the received power measurement result of carrier sense result who uses the expression up link and down link, suc as formula (7) such expression.
[numerical expression 7]
K≤T/{max(l_ulcs，l_dlcs+l_fb)+l_us+l_ntf}(7)
In addition; Under the situation of the system that the received power that begins down link through the indication from the base station is measured, the base station that belongs to k cell set need make user terminal begin the received power measurement of down link in the scheduling later suitable moment of timing of (k-1) individual cell set.If establishing and will handling the needed time to base station reception that send, request signal from the measurement result of the received power of the down link of base station to the user terminal requests of the sub-district that belongs to k cell set is l_rx_k, then the base station of k cell set need be at the moment transmission request signal than the time T inst shown in the scheduling forward formula of timing (8) of k cell set.
[numerical expression 8]
T
inst＝1_rx_k+1_dlcs_k+l_?fb_k+1_us_k+1_ntf_k (8)
Then, the group technology to the sub-district describes.
Being grouped into of sub-district makes it belong to different groups if the influence of the interference of minizone is more than the threshold value.At this moment, preferably, the degree of the interference of minizone more preferentially makes these sub-districts belong to different groups more greatly.The determination methods of the interference of minizone particularly both can use the result of field survey to judge the interference degrees of minizone, also can be to belong to number of users in the sub-district to be judged as the influence of interference more at most many more.In addition, also can be that the nearlyer influence that then is judged as interference of remote base station 150 distance each other is big more.And then, also can be through with reference to the transfer resume of user terminal, the number of times of transfer is many more, and overlapping areas is many more in the minizone, so it is big more to be judged as the influence of interference.Through such determination methods, make each bigger sub-district of influence of interference belong to different groups.
About this grouping, can be used as map colouring problem and handle, can adopt the algorithm same with known Frequency Distribution.In addition, this packet transaction does not need to carry out continually, as long as when new when laying the base station, change, also have and in transmission environment, take place to implement under the situation of bigger conversion just passable because of the construction of mansion etc.
One example of action of the radio communication device of relevant this execution mode then, is described with reference to Fig. 6 and Fig. 7.Fig. 6 representes the interference coverage area of the down link that the base station forms or the interference coverage area of the up link that user terminal forms.Fig. 7 representes a scheduling example regularly of each cell set.
As shown in Figure 6, base station A, B, C are set respectively, form the sub-district according to each base station.In addition, interference coverage area 601A, 601B, the 602C with the down link of each base station representes with solid line.On the other hand, user terminal a, b1, b2, c belong to each base station.Particularly, user terminal a belongs to the sub-district A that base station A forms, and user terminal b1, b2 belong to the sub-district B that base station B forms, and user terminal c belongs to the sub-district C that base station C forms.In addition, interference coverage area 602a, 602b-1,602b-2, the 602c with the up link of each user terminal dots.
It is that 3, sub-district A, B, C belong to the different cell set A situation to C respectively that the imagination cell set is counted K.
Then, with reference to Fig. 7 the allocation situation of the channel of relevant this execution mode is described.Here, be set at, all cell set is implemented scheduling with identical scheduling interval 731, but the scheduling of each cell set is regularly different.
Cell set A scheduling regularly 701A, 702A ..., 707A, use the scheduling result of implementing in its tight front, whether decision is given user terminal with channel allocation and is communicated.Equally, for cell set B and C, also scheduling regularly 701B, 702B ..., 707B, scheduling regularly 701C, 702C ..., 707C, use the scheduling result of implementing in its tight front respectively, whether decision is given user terminal with channel allocation and is communicated.
As shown in Figure 7, imagination belongs at first the situation of data communication 711 of the user terminal a of sub-district A at moment 701A.In the process, user terminal b1 and c have carried out communication request to imagination during this data communication 711.At this moment, in sub-district B and sub-district C, during moment 701A-701B in and constantly 701B-701C during in the carrier sense of the up link implemented respectively, the interference power that detects user terminal a is threshold value above (carrier sense result 721 and 722).Thus, can not allocated channel at cell set B and C scheduling timing 701B and 701C separately.
Here, if the communication of user terminal a finishes at moment 702A, then during moment 702A-702B in, in the downlink received power of the carrier sense of the up link of base station B and user terminal b1 is measured, detect less than other interference.Thus, user terminal b1 allocated channel is carried out data communication 712.In addition; During moment 701B-701C; In the carrier sense of the up link of base station C, detect interference less than user terminal b1;, the downlink received power of user terminal c also detects interference in measuring, so the scheduling of C timing 702C carries out data communication 713 to user terminal c allocated channel in the sub-district less than base station B.
Here, constantly 702A-702B during be the idle period of time that which user terminal is not all had allocated channel.In method in the past, for example the scheduling in whole sub-districts regularly is that idle period of time is scheduling interval T under the situation simultaneously, and in this execution mode, is become than during the T weak point between schedule periods idle period of time.In the scheduling of this execution mode, satisfy formula (5) through setting and count K to the cell set of the maximum of the condition of formula (7), can make idle period of time become required Min..
Then, during moment 701B-701C in, though the communication request of user terminal a has taken place since during the moment 702C-703A user terminal b1 and user terminal c ongoing communication, so detect the above interference power of threshold value.Thus, after the data communication 712 and 713 of user terminal b1 and user terminal c finishes respectively, to user terminal a allocated channel, begin data communication 714 at scheduling timing 704A.
In addition, sent communication request from user terminal b2 in supposing during moment 703C-704A, and sent communication request from user terminal c in during moment 704A-704B.At this moment; In sub-district B and sub-district C; During moment 704A-704B and constantly 704B-704C during in the carrier sense of the up link implemented respectively, detecting user terminal a, to carry out the interference power that data communication 714 brings be threshold value above ( carrier sense result 725 and 726).Thus, can not allocated channel at each scheduling timing 704B and 704C.
So if the data communication 714 of user terminal a finishes at moment 705A, then the whichever cell set does not communicate during moment 705A-705B,, carry out data communication 715 so select user terminal b2 at scheduling timing 705B.At this moment, during moment 705B-705C, detect the interference (carrier sense result 727) of user terminal b2 by base station C.Thus, 705C can not select user terminal c in the scheduling timing, after the data communication 715 of moment 706B user terminal b2 finishes, to user terminal c allocated channel, carries out data communication 716 at scheduling timing 706C.
In addition; As method in the past, all the scheduling of sub-districts regularly be simultaneously, all under the situation identical with cell set A, become the sign off of user terminal a constantly the initial scheduling timing 706A behind the 705A select user terminal b2 and user terminal c simultaneously.In the case, because user terminal b2 and base station C are in the position relation that mutual detection is interfered, so the communication quality variation.On the other hand; In the dispatching method of relevant this execution mode; Owing in the scheduling regularly of the sub-district of the relation that is in neighbor cell B and sub-district C, be provided with skew; So can not select to bring each other user terminal that the minizone interferes each other simultaneously, the communication of each user terminal can be kept higher communication quality.
In addition; In the example of Fig. 7; Represented under cell set A has carried out the situation of communication, from scheduling regularly 601A to next scheduling regularly till the 602A during (the scheduling interval) continue example of communication; But the data deficiencies that should communicate by letter with the situation that satisfies scheduling interval under, also can send pseudo-data etc. up to reaching scheduling interval.
In addition, the data deficiencies that should communicate by letter with the situation that satisfies scheduling interval under, also can other cell set regularly communicate based on scheduling.For example, in Fig. 7, imagination till from moment 701A to 701B during in the situation of sign off of cell set A.In the case, can know that according to the carrier sense result of the cell set C in during till from moment 701B to 701C which cell set does not all communicate, thus cell set C also can scheduling regularly 701C carry out the distribution of channel.
With reference to Fig. 8 one example of the analog result of the radio communication device of relevant this execution mode is described.
Imagination is that the regular hexagon sub-district of 200m disposes 27 sub-districts in the plane, in each sub-district, disposes the model of 8 user terminals evenly distributedly with radius of society.Channel model is ITU-RPedestrian A (3km/h), and the user in the scheduling selects to carry out with Proportional Fairness standard.The antenna number of remote base station is 4, and the antenna number of user terminal is 1, in AAA, carries out MMSE (Minimum Mean Square Error: minimum mean square error criterion) zero of standard fall into.The transmitted power of base station and user terminal is distributed as 43dBm and 23dBm.
Previous methods is that whole sub-districts are suitable for scheduling result with identical per 3 frames of scheduling timing; With respect to this; In the dispatching method of relevant this execution mode, be divided into 3 cell set so that neighbor cell is not identical cell set each other, regularly be provided with the skew of 1 frame for the scheduling between cell set.Wherein, the carrier sense of up link and the received power of down link measure that 1 frame carries out before scheduling regularly, do not consider to use Fig. 3 and Fig. 4 to carry out above-mentioned other and handle the needed time.
As shown in Figure 8, with the user SINR of down link with CDF (Cumulative DistributionFunction: cumulative distribution function) expression.Curve 801 is previous methods, and curve 802 is dispatching methods of relevant this execution mode.If comparison curves 801 and curve 802, then curve 802 is compared user SINR with curve 801 and has been improved about 1.5dB.In addition, the whole throughput in sub-district improves 11.4%.
According to this execution mode shown in above; The degree of interfering according to the minizone through the sub-district that the base station is formed is grouped into a plurality of cell set; Set different scheduling regularly according to each cell set, the free time that can cut the waste thus, and carry out the avoiding interference of minizone effectively; Can improve frequency utilization efficient, realize higher throughput.
Execution modes more of the present invention have been described, but these execution modes point out as an example, and do not mean that the qualification scope of invention.These new execution modes can be implemented with other various forms, in the scope of the purport that does not break away from invention, can carry out various omissions, substitute, change.These execution modes and distortion thereof are included in scope of invention and the purport, and are included in the described invention of claims and its scope that is equal to.
Label declaration
100 radio communication devices, 101 central control units, 102 physical layer signal handling parts, 103 scheduling portions; 104 network interface portions, 150 remote base stations, 151 antennas, 152 simulation parts; 201 digital signal Return Reception Dept.s, 202 Data Detection portions, 203 transmission path information obtain portion, 204 data generation portions; 205 digital signals are sent handling part, and 301,302,401,402,501,701A～C, 702A～C, 703A～C, 704A～C, 705A～C, 706A～C scheduling regularly (constantly), during 311 carrier senses, during 312 users select; 313 scheduling result are between notice day, and 314,415,522 time differences are during 411 received powers are measured, during 412 feedbacks; 521,731 scheduling intervals, 601A, 601B, 601C base station, 602A, 602B, 602C, 604a, 604b, 604c interfere coverage area, 603a, 603b-1,603b-2,603c user terminal; 711～716 data communication, 721～727 carrier sense results, 801,802 curves.
Claims (10)
1. a radio communication device is characterized in that,
Possess:
Transmission path information obtains portion, obtains the interference performance number of the interference state of expression transmission path from a plurality of remote base stations of the antenna more than 1 that comprise; And
Scheduling portion; According to the above-mentioned interference performance number; For a short time divide into a plurality of groups with what above-mentioned a plurality of remote base stations formed respectively; And decision carry out between the first phase scheduling first regularly with in second timing of this first scheduling after regularly, that carry out the second phase, between the above-mentioned first phase be in first group the sub-district that belongs in above-mentioned group, can communicate by letter during, the above-mentioned second phase be in second group the sub-district that belongs in above-mentioned group, can communicate by letter during;
Above-mentioned first regularly and above-mentioned second time difference between regularly be between the third phase more than, comprise between the above-mentioned third phase form the remote base station that belongs to this sub-district of second group obtain interfere performance number during.
2. radio communication device as claimed in claim 1 is characterized in that, the interference performance number of above-mentioned scheduling portion between first sub-district and second sub-district is under the situation more than the threshold value, makes above-mentioned first sub-district belong to different groups with above-mentioned second sub-district.
3. radio communication device as claimed in claim 1; It is characterized in that; The distance of above-mentioned scheduling portion between first remote base station and second remote base station is under the situation below the threshold value, makes first sub-district that belongs to above-mentioned first remote base station belong to different groups with second sub-district that belongs to second remote base station.
4. radio communication device as claimed in claim 1; It is characterized in that; Above-mentioned scheduling portion from first sub-district to second sub-district or to transfer number of times from above-mentioned second sub-district to the user of above-mentioned first sub-district be under the situation more than the threshold value, make above-mentioned first sub-district belong to different groups with above-mentioned second sub-district.
5. radio communication device as claimed in claim 1 is characterized in that,
Above-mentioned first group scheduling interval equates with above-mentioned second group scheduling interval;
Above-mentioned scheduling portion is set between above-mentioned third phase time after the multiplication by constants doubly with the quantity of group to be become below the value of this constant of above-mentioned scheduling interval when following.
6. radio communication device as claimed in claim 1; It is characterized in that; During comprising the carrier sense of measuring received power in the remote base station of up link between the above-mentioned third phase, select the user's of allocated channel user to select during and the result that will select the user between the notice day of the user notification that has been assigned with above-mentioned channel, above-mentioned up link is represented the link to this remote base station from the user.
7. radio communication device as claimed in claim 1; It is characterized in that, comprise between the above-mentioned third phase expression from remote base station to during the measurement of the received power of the down link of user's link, with the measured value of this received power from above-mentioned user to during the feedback of above-mentioned remote base station feedback, select the user's of allocated channel user to select during and the result that will select the user between the notice day of the user notification that has been assigned with above-mentioned channel.
8. radio communication device as claimed in claim 1 is characterized in that,
Measure in the remote base station of up link during the carrier sense of received power than during the measurement of the received power of down link with the measured value of this received power from above-mentioned user under the situation that sum is long during the feedback of above-mentioned remote base station feedback; Comprise during the above-mentioned measurement between the above-mentioned third phase and sum during the above-mentioned feedback; Above-mentioned up link is represented the link to this remote base station from the user, and above-mentioned down link is represented from the link of above-mentioned remote base station to the user;
During being above-mentioned measurement during the above-mentioned carrier sense with above-mentioned feedback during under the situation below the sum, comprise during the above-mentioned carrier sense between the above-mentioned third phase.
9. like claim 7 or 8 described radio communication devices; It is characterized in that; Above-mentioned scheduling portion than above-mentioned first regularly forward with the above-mentioned third phase between with the user receive after handling the needed time addition of above-mentioned request signal during more than the moment; Send request signal, this request signal is used to ask the user that in the sub-district that belongs in above-mentioned first group, can communicate by letter to send the measurement result of received power to remote base station.
10. a radio communication device possesses a plurality of control of communication portions that comprise the remote base station of the antenna more than 1 and control above-mentioned a plurality of remote base stations, it is characterized in that,
Above-mentioned control part possesses:
Transmission path information obtains portion, obtains the interference performance number of the interference state of expression transmission path from a plurality of remote base stations; And
Scheduling portion; According to the above-mentioned interference performance number; For a short time divide into a plurality of groups with what above-mentioned a plurality of remote base stations formed respectively; And decision carry out between the first phase scheduling first regularly with in second timing of this first scheduling after regularly, that carry out the second phase, between the above-mentioned first phase be in first group the sub-district that belongs in above-mentioned group, can communicate by letter during, the above-mentioned second phase be in second group the sub-district that belongs in above-mentioned group, can communicate by letter during;
Above-mentioned first regularly and above-mentioned second time difference between regularly be between the third phase more than, comprise between the above-mentioned third phase form the remote base station that belongs to this sub-district of second group obtain the above-mentioned interference performance number during.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP206003/2010 | 2010-09-14 | ||
| JP2010206003A JP5060605B2 (en) | 2010-09-14 | 2010-09-14 | Wireless communication device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102438323A true CN102438323A (en) | 2012-05-02 |
| CN102438323B CN102438323B (en) | 2014-11-12 |
Family
ID=45986137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110225162.1A Expired - Fee Related CN102438323B (en) | 2010-09-14 | 2011-08-08 | Radio communication device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5060605B2 (en) |
| CN (1) | CN102438323B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1910949A (en) * | 2003-12-11 | 2007-02-07 | 高通股份有限公司 | Method and apparatus for conveying sector load information to mobile stations |
| CN101499829A (en) * | 2008-01-30 | 2009-08-05 | 普天信息技术研究院有限公司 | Data transmitting method and system under high-speed mobile environment |
| WO2010025286A2 (en) * | 2008-08-28 | 2010-03-04 | Qualcomm Incorporated | DISTRIBUTED DOWNLINK COORDINATED MULTI-POINT (CoMP) FRAMEWORK |
| JP2010200311A (en) * | 2009-02-26 | 2010-09-09 | Mitsubishi Electric Research Laboratories Inc | Method for allocating resource block in orthogonal frequency-division multiple-access network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000253444A (en) * | 1999-02-25 | 2000-09-14 | Nippon Telegr & Teleph Corp <Ntt> | Base station equipment |
-
2010
- 2010-09-14 JP JP2010206003A patent/JP5060605B2/en not_active Expired - Fee Related
-
2011
- 2011-08-08 CN CN201110225162.1A patent/CN102438323B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1910949A (en) * | 2003-12-11 | 2007-02-07 | 高通股份有限公司 | Method and apparatus for conveying sector load information to mobile stations |
| CN101499829A (en) * | 2008-01-30 | 2009-08-05 | 普天信息技术研究院有限公司 | Data transmitting method and system under high-speed mobile environment |
| WO2010025286A2 (en) * | 2008-08-28 | 2010-03-04 | Qualcomm Incorporated | DISTRIBUTED DOWNLINK COORDINATED MULTI-POINT (CoMP) FRAMEWORK |
| WO2010025286A3 (en) * | 2008-08-28 | 2010-09-02 | Qualcomm Incorporated | DISTRIBUTED DOWNLINK COORDINATED MULTI-POINT (CoMP) FRAMEWORK |
| JP2010200311A (en) * | 2009-02-26 | 2010-09-09 | Mitsubishi Electric Research Laboratories Inc | Method for allocating resource block in orthogonal frequency-division multiple-access network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102438323B (en) | 2014-11-12 |
| JP5060605B2 (en) | 2012-10-31 |
| JP2012065047A (en) | 2012-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101127747B (en) | A method and system for frequency domain scheduling in time division duplex multiplexing system | |
| CN101395819B (en) | Communication device, mobile station, and method | |
| CN101095328B (en) | Scheduling apparatus and method in a multicarrier communication system | |
| CN101253709B (en) | Apparatus and method of feedback channel quality information and scheduling apparatus and method using thereof in a wireless communication system | |
| CN101083516B (en) | Systems and methods for wireless communication | |
| CN1819573B (en) | Distributed multiple antenna scheduling method for wireless packet data communication system using OFDM | |
| CN101095362B (en) | Per stream rate control (psrc) for improving system efficiency in ofdm-mimo communication systems | |
| CN1762117B (en) | Method and apparatus for reducing co-channel interference in a communication system | |
| CN1823485B (en) | Interference and noise estimation in an OFDM system | |
| CN101641877B (en) | Characterization of co-channel interference in a wireless communication system | |
| CN102685915B (en) | Self-adaptive dispatching method of uplink signal channel detection pilot frequency | |
| CN101720093B (en) | Orthogonal matrix-based cognitive radio spectrum sharing method | |
| CN103037520A (en) | Resource scheduling method and resource scheduling device | |
| CN102387509B (en) | Multi-resource joint allocation and optimization method based on user service quality requirements in perception delay tolerant network | |
| WO2009049535A1 (en) | Method and device for allocating wireless resource in wireless communication system | |
| CN101124795A (en) | Constrained hopping in wireless communication systems | |
| CN101083651A (en) | Communication system using OFDM for one direction and dsss for another direction | |
| CN103124435A (en) | Wireless communication system, network device and terminal device | |
| CN103997394A (en) | Multi-cell coordination large-scale MIMO pilot frequency multiplexing transmission method | |
| CN101317412A (en) | Interference measuring method, resource allocation method and device in frequency division multiple address system | |
| CN102202028A (en) | Method for designing cognitive high-speed wireless communication system under discrete spectrum condition | |
| CN101399585A (en) | Method and device for customer signal generation and interference suppression in OFDMA intelligent antenna system | |
| CN101155401A (en) | Device and method for commuting CQI transmission mode | |
| CN101132229A (en) | Transmission method and device for descending shared control signal channel | |
| CN101998612B (en) | Resource distribution method and device for two-hop multi-relay orthogonal frequency division multiplexing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20170808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |