CN101421947A - Time frequency resource allocation method and device and wireless communication system - Google Patents
Time frequency resource allocation method and device and wireless communication system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2615—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid frequency-time division multiple access [FDMA-TDMA]
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
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- H04W72/044—Wireless resource allocation based on the type of the allocated resource
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Abstract
A time frequency resource allocation method and a device thereof are provided, the method comprises: dividing the whole time-frequency plane into R physical resource blocks with equal size, wherein each physical resource block comprises M continuous subcarriers in frequency domain and N continuous symbols in time domain (S11); setting a set of orthogonal time-frequency patterns for the cell (S12); physical resource blocks are allocated to the localized virtual resource blocks or/and the distributed virtual resource blocks, wherein a time-frequency pattern distributed in the distributed transmission physical resource blocks or a fraction thereof is allocated to one of the distributed virtual resource blocks (S13). The device comprises a physical resource dividing unit, a time frequency pattern setting unit and a time frequency resource distributing unit. According to the invention, the time-frequency resource occupation mode of the scattered transmission can be utilized to realize the randomization of the interference among the cells, and the sufficient frequency diversity gain can be obtained.
Description
The distribution method and its device and wireless communication system of running time-frequency resource
This application claims submitted Patent Office of the People's Republic of China, Application No. 200610077596.0 on 04 28th, 2006, it is entitled " distribution method and its device and wireless communication system of running time-frequency resource; ' Chinese patent application priority, entire contents are hereby incorporated by reference in the application.Technology tool
The present invention relates to the distribution method and its device and wireless communication system of communication technical field, more particularly to running time-frequency resource.Background technology
Cellular radio Communication system realizes frequency reuse by the way that a big service area is divided into many less overlay areas, to improve power system capacity.Each small area of coverage is referred to as a cell（ cell ).When using simple multiplexing factor for one frequency resource allocation, different districts use identical frequency, thus work in same frequency cell signal between can interfere.The design requirement of cellular system will ensure that the interference between intra-cell users is as small as possible, while inter-cell interference is equalized as far as possible.
OFDM (OFDM, orthogonal frequency division multiplexing) broad-band channel is divided into some orthogonal narrowband subchannels, high-speed data-flow parallel transmission on each sub-channels by serial to parallel conversion by technology in frequency domain.Due to the narrow-band characteristic of subchannel, multi-path influence can be overcome, intersymbol interference is eliminated significantly, simultaneously because the frequency between subchannel arrange it is overlapped in the case of still meet orthogonal property, thus fork improves the availability of frequency spectrum.Simultaneously as the introducing of the development of Digital Signal Processing and fast discrete Fourier conversion, the signal modulation of OFDM systems and demodulation also become very simple, these all cause OFDM technology to be increasingly becoming the core technology of GSM.
In the prior art, following solution is proposed for downlink data multiplexing：
Whole frequency band is divided into a series of physical resource block（PRB), each Physical Resource Block includes continuous symbol in continuous subcarrier on M frequency domain and N number of time domain, and M is primarily determined that as 25.In the case where not considering the information such as pilot tone and control, N values 7 are the symbolic number in a subframe.The size of one Physical Resource Block represents that Μ χ Ν are the time frequency unit total number that Physical Resource Block takes with Μ χ Ν, and a time frequency unit refers to a subcarrier in a symbol time.
Ofdm system supports two kinds of transmission means：Concentration of transmissions（Localized Distribution) and distributed transmission（ Distributed Transmission ).Concentration of transmissions takes continuous subcarrier, and disperses
Transmission then takes some scattered subcarriers to reach the purpose of frequency diversity.For convenience, virtual resource blocks are introduced（VRB, Virtual Resource Block) concept.One virtual resource blocks is by two parameter characterizations, and first is resource block size（Size );Second is type（Type), i.e., Virtual is intended resource block and is divided into concentration virtual resource blocks（LVRB, Localized Virtual Resource Block) and two kinds of scattered virtual resource blocks (DVRB, Distributed Virtual Resource Block).
The concentration virtual resource blocks（LVRB) it is mapped in a concentrated manner on Physical Resource Block, disperses virtual resource blocks（DVRB) then it is mapped in decentralized manner on Physical Resource Block.When a sub- frame in has two kinds of transmission simultaneously, two kinds of transmission are multiplexed together in the way of frequency division.
The scheme that virtual resource blocks are mapped into Physical Resource Block is the important content of the cellular radio Communication system design of OFDM technology, and at present, a kind of scheme for realizing is：
Set and concentrate virtual resource blocks（) and Physical Resource Block LVRB（PRB it is) equal in magnitude, concentrate virtual resource blocks to map directly on a Physical Resource Block one.
PRB number is represented with ^ 5, N is usedrasLVRB number is represented, due to LVRB to PRB mapping --- correspondence, so NrasValue with for concentration of transmissions PRB numbers it is equal.Remaining PRB can be used for distributed transmission, be represented with DPRB, and number is N=N
Scattered Virtual is set to intend resource block（DVRB) equal in magnitude with LVRB and PRB, number is with representing, MN pictures≤NDPRB, i.e., the resource quantity of distributed transmission can be given less equal than system by finally distributing to the resource of dispersion transmission user.
Each DVRB is divided into Hidden parts of N, is mapped to per portion in a DPRB one section of resource, this section of resource is continuous in frequency domain and time domain.Specific segmentation and mapping method are as follows：
To Layer 0 1^ of ^, sequence number=0,1-1 is set
Simultaneously to N.Layer DPRB sets sequence number j=0, l, 2, N Chant -1
One DVRB is divided into N.Part, wherein the part is mapped to the7On individual DPRB.So the DVRB the 7th part of size is given by the following formula：When _/
When ≠, su = ^DVRB
DPRB
Wherein Gang represents DVRB size
The less DVRB of sequence number preferentially maps.
Calculate the of the DVRB；Original position of the part on the DPRB is, it is necessary to the 0th size to ζ -1 DVRB part that add up.
The mapping of DVRB to DPRB in prior art is exemplified below：
The system of one 5M bandwidth, has 12 PRB in a sub- frame in, wherein 8 are used for concentration of transmissions, therefore Λ ^=4.It is will be mapped to that provided with 3 DVRB in physical channel.
The information, S such as pilot tone and control are not consideredw^ = S^=MxN=25><7=l75.So
175
When _ /=chicken roost,=175-(4-1) 46 175
When _/≠/when, S=: 43,
4
Wherein, ζ=0,1, _ /=0,1,2,3 thus=0 DVRB take=0 DPRB the 0th, the 1st, the 2nd, the 3rd, the 4th, all 7 symbols of the 5th subcarrier, and the 6th subcarrier preceding 4 symbols；Take production 1, the DPRB of production 2,3 the 0th, the 1st, the 2nd, the 3rd, the 4th, all 7 symbols of the 5th subcarrier, and the 6th subcarrier the 1st symbol；
DPRB the 6th subcarrier rear 3 symbols, the 7th, the 8th, the 9th, the 10th, all 7 symbols of the 11st subcarrier, and the 12nd subcarrier preceding 5 symbols；Take rear 6 symbols of j'=l DPRB the 6th subcarrier, the 7th, the 8th, the 9th, the 10th, all 7 symbols of the 11st subcarrier, and the 12nd subcarrier preceding 5 symbols；Take family 2, rear 6 symbols of the DPRB at family 3 the 6th subcarrier, the 7th, the 8th, the 9th, the 10th, all 7 symbols of the 11st subcarrier, and the 12nd subcarrier preceding 2 symbols；
=2 DVRB takes j'=0, DPRB the 12nd subcarrier rear 2 symbols, the 13rd, the 14th, the 15th, the 16th, all 7 symbols of the 17th subcarrier, and the 18th subcarrier preceding 6 symbols；Rear 5 symbols of the DPRB of occupancy the 12nd subcarrier, the 13rd, the 14th, the 15th, the 16th, all 7 symbols of the 17th subcarrier, and the 18th subcarrier preceding 6 symbols；Take _ rear 5 symbols of /=3 DPRB the 12nd subcarrier, the 13rd, the 14th, the 15th, the 16th, all 7 symbols of the 17th subcarrier, and the 18th subcarrier preceding 3 symbols.
As shown in figure 1,3 figure correspondences 3 DVRB, 4 middle figure 4 DPRB of correspondence on the left side,
Wherein, the resource of occupancy, right oblique line represents the resource of=1 DVRB occupancy,
The resource of occupancy；Figure 12 PRB of correspondence on the right, the part of wherein grey represents the PRB taken by concentration of transmissions.
From technical scheme disclosed above, the running time-frequency resource of the distributed transmission, which takes method, can not strengthen inter-cell interference randomization simultaneously；And because the frequency resource that the DVRB parts for being mapped to a DPRB take is continuous, when a PRB occupied bandwidth is larger in system, during such as 25 subcarriers, this section of continuous frequency resource blunt can not represent the channel situation of 25 subcarrier experience well, so frequency diversity gain is limited；And when a PRB occupied bandwidth is smaller, such as during 12 subcarriers, a DVRB may only take up the several symbols of identical on each PRB, time diversity gain is lost.The content of the invention
The embodiment of the present invention provides the distribution method and its device and wireless communication system of a kind of running time-frequency resource, to realize the randomization of inter-cell interference using the running time-frequency resource occupancy mode of distributed transmission and obtain sufficient frequency diversity gain and time diversity gain.
The embodiment of the present invention provides a kind of distribution method of running time-frequency resource, including：
Whole time-frequency plane is divided into R equal-sized Physical Resource Block, each Physical Resource Block includes continuously symbol, wherein R in continuous subcarrier on Μ frequency domain and Ν time domain, and Μ and Ν are positive integer；
For cell, one group of orthogonal frequency patterns is set；
Physical Resource Block is distributed into concentration virtual resource blocks or/and scattered virtual resource blocks, the segment that wherein will be distributed over the frequency patterns in distributed transmission Physical Resource Block or frequency patterns distributes to a scattered virtual resource blocks, and the distributed transmission Physical Resource Block refers to the Physical Resource Block for distributing to scattered virtual resource blocks.
The embodiment of the present invention provides a kind of distributor of running time-frequency resource, for determining position of the resource of each virtual resource blocks in Physical Resource Block, and to distribute running time-frequency resource, the virtual resource blocks include concentrating virtual resource blocks and scattered virtual resource blocks；The device includes：
Physical resource dividing unit, for whole time-frequency plane to be divided into R equal-sized Physical Resource Block, each Physical Resource Block includes continuously symbol, wherein R in continuous subcarrier on Μ frequency domain and Ν time domain, and Μ and Ν are positive integer；
Time-frequency pattern setting unit, is connected with physical resource dividing unit, for being set for each cell
One group of orthogonal frequency patterns, and fill up with it whole time-frequency plane；
Time-frequency resource distributing unit, it is respectively connected with physical resource dividing unit and time-frequency pattern setting unit, for distributing Physical Resource Block to concentration Virtual plan resource blocks or/and scattered virtual resource blocks, the segment of frequency patterns or frequency patterns wherein in distributed transmission Physical Resource Block is assigned to a scattered virtual resource blocks, and the distributed transmission Physical Resource Block refers to the Physical Resource Block for distributing to scattered virtual resource blocks.
The embodiment of the present invention provides a kind of wireless communication system, and the system includes base station and the mobile station with base station communication, wherein the base station includes：
Time-frequency resource allocating device, for determining position of the resource of each virtual resource blocks in Physical Resource Block, is allocated wherein position of the scattered virtual resource blocks in Physical Resource Block is just blunt according to frequency patterns；
The base station is used to the running time-frequency resource information of the resource of each virtual resource blocks position in physics source block notifying mobile station；
The running time-frequency resource information of the mobile station, just resource position in physics source block of each virtual resource blocks received by blunt evidence, adjusts the time-frequency location for receive information.
In technical scheme provided in an embodiment of the present invention, whole time-frequency plane is divided into several equal-sized Physical Resource Block, each Physical Resource Block includes continuously symbol, wherein R in continuous subcarrier on M frequency domain and N number of time domain, and M and N are positive integer；Whole time-frequency plane is filled up with the specific one group of orthogonal frequency patterns of cell；Physical Resource Block is distributed into concentration virtual resource blocks and/or scattered virtual resource blocks；The segment that wherein will be distributed over the frequency patterns in distributed transmission Physical Resource Block or frequency patterns distributes to a scattered virtual resource blocks, and the distributed transmission Physical Resource Block refers to the Physical Resource Block for distributing to scattered virtual resource blocks.By designing the mapping relations of virtual resource block to physical resource block, to realize frequency division orthogonal multiplex（OFDM) the running time-frequency resource multiplexing of cellular radio Communication system, so that no matter only having distributed transmission in system, or distributed transmission and concentration of transmissions frequency division multiplexing, can meet inter-cell interference average requirement as far as possible, while distributed transmission can obtain sufficient frequency diversity gain.Brief description of the drawings
Fig. 1 is the principle schematic that scattered virtual resource blocks are mapped to Physical Resource Block in the prior art；Fig. 2 is the flow chart of the distribution method of the running time-frequency resource provided in the embodiment of the present invention；
Fig. 3 is the schematic diagram of frequency patterns distribution situation in Physical Resource Block in embodiment shown in Fig. 2；
Fig. 4 is the schematic diagram that scattered virtual resource blocks are mapped to in the embodiment provided in the embodiment of the present invention Physical Resource Block by frequency patterns；
Fig. 5 is the structural representation of the distributor of the running time-frequency resource provided in the embodiment of the present invention；Fig. 6 is the structural representation of the wireless communication system provided in the embodiment of the present invention.Embodiment
For the ease of understanding principle, characteristic and the advantage of the present invention, the present invention is described further below in conjunction with the accompanying drawings.
Fig. 2 show the flow chart of the distribution method of time frequency resources provided in the embodiment of the present invention.The distribution method of time frequency resources includes：
Step S11:Whole time-frequency plane is divided into R equal-sized Physical Resource Block, each Physical Resource Block includes continuously symbol, wherein R in continuous subcarrier on M frequency domain and N number of time domain, and M and N are positive integer；
Step S12:One group of orthogonal frequency patterns is set for each cell, and fills up with it whole time-frequency plane；
Step S13:Physical Resource Block is distributed into concentration virtual resource blocks or/and scattered virtual resource blocks, the segment that wherein will be distributed over the frequency patterns in distributed transmission Physical Resource Block or frequency patterns distributes to a scattered virtual resource blocks, and the distributed transmission Physical Resource Block refers to the Physical Resource Block for distributing to scattered virtual resource blocks.
In order to which cylinderization is described, do not consider the information such as pilot tone and control in the following description, only consider design when whole time-frequency plane is used for data transfer.Once needing to set the information such as pilot tone and control in system, then relevant position, such as first of one subframe or the first two symbol are used for the information such as pilot tone, and the design of remaining position keeps constant.
In step S11, whole time-frequency plane is divided into R equal-sized Physical Resource Block from frequency domain, each Physical Resource Block includes continuous subcarrier on M frequency domain.Whole time-frequency plane includes continuous symbol in N number of time domain.The size of a Physical Resource Block, i.e., the running time-frequency resource quantity that one Physical Resource Block includes are represented with Μ χ Ν.And sequence number=0,1,2 is set to R Physical Resource Block ..., R- l o
It is that cell sets one group of orthogonal frequency patterns, and fill up with it whole time-frequency plane in step S12.Wherein, a frequency patterns refer to the set of one group of running time-frequency resource；Just interdigital two frequency patterns of two frequency patterns do not include public running time-frequency resource.
In order to describe conveniently, by kxRxN of the size of each frequency patterns, (frequency patterns size is the number for the time frequency unit that a frequency patterns take below）In case of illustrate.In this case, whole time-frequency plane has M/k orthogonal frequency patterns, wherein k is M any one approximate number, and to time-frequency pattern setting sequence number), l, 2 ..., M/k-l.
One frequency patterns is divided into equal-sized R sub- frequency patterns, and sequence number family 0,1,2 ..., R-1 are set, the.Individual sub- frequency patterns are only comprising the running time-frequency resource on the Physical Resource Block, Jq=0,1,2 ..., R-1.Each period of the day from 11 p.m. to 1 a.m frequency pattern magnitude is kxN, includes the N group resources on corresponding Physical Resource Block.This N groups resource is located on N number of different symbol respectively, and takes k subcarrier on each symbol, this k subcarrier can continuously can also be discontinuous, can for example be spacedly distributed.
It is in fact possible to which the description of scheme according to multiple patents carries out frequency patterns design, such as Application No.：200610005696.2,200610006600.4 or/and 200610002999.9 patent.One frequency patterns represents that its concrete meaning mainly has following several by one or more sequences { S ') }：First, (o represents in some Physical Resource Block that (o frequency cells, one of time quantum is a symbol or multiple adjacent-symbols to the s on the time quantum, and a frequency cells are a subcarrier or multiple adjacent sub-carriers to s；2nd, s () is represented in some Physical Resource Block, the s ' in the frequency cells) individual time quantum；3rd, s () is represented in some time quantum, the S ' in the Physical Resource Block) individual frequency cells.When the frequency patterns group of different districts is respectively by the generation of different sequence groups, and when having preferable correlation between sequence group, interference randomization can be obtained between frequency patterns.Specific sequences Design process refers to the patent, will not be repeated here.
It is described further below in case of frequency patterns size is kxRxN.The sub-carrier positions that each sub- frequency patterns to each frequency patterns are distributed in the sequence that a specific length is N, the N number of symbol of sequence number correspondence of the sequence, value one Physical Resource Block of correspondence of the sequence.As shown in figure 3, being the embodiment of frequency patterns distribution situation in Physical Resource Block.Wherein take parameter M=25, N=7, R=12, k=5.The figure on the left side represents a frequency patterns and its 12 sub- frequency patterns in Fig. 2, wherein different decorative patterns represents sub- frequency patterns different in the frequency patterns；The figure on the right represents 12 Physical Resource Block, wherein different flower Pattern corresponds to corresponding flower Pattern frequency patterns, blank parts quilt
Other frequency patterns,
Frequency patterns fill up.Different districts can also use different frequency patterns groups using identical frequency patterns group.When using the different frequency patterns groups designed in above-mentioned patent, the interference randomization of minizone can be easily obtained.
In step s 13, Physical Resource Block is distributed into concentration virtual resource blocks or/and scattered virtual resource blocks, the segment that wherein will be distributed over the frequency patterns in distributed transmission Physical Resource Block or frequency patterns distributes to a scattered virtual resource blocks, and the distributed transmission Physical Resource Block refers to distributing to the Physical Resource Block of scattered virtual resource blocks.A kind of feasible way, but this way is not limited to, it is the part order not taken in frequency patterns by concentration of transmissions to be distributed to distributed transmission virtual resource blocks.Especially, when a segment of a frequency patterns is as last the frequency patterns segment for distributing to virtual resource blocks, the next segment for distributing the frequency patterns is used as first frequency patterns segment of next virtual resource blocks.
In specific implementation process, the sub- frequency patterns that can not taken to each scattered virtual resource blocks order-assigned by concentration of transmissions, i.e. to all sub- frequency patterns Unified numbers for distributing to scattered virtual resource blocks, the small sub- frequency patterns of the scattered virtual resource blocks preferential Allotment Serial Number small to sequence number.
If the number that virtual resource blocks sometime, are concentrated in system is that the number of scattered virtual resource blocks is Ρ.Given virtual resource block size, for example, MxN, then corpse+g R.To scattered virtual resource block number ,=0, l, 2 ..., P-l.
As only distributed transmission, i.e. β=0, to all individual sub- frequency patterns Unified numbers, such as original i-th0The of individual frequency patterns.The Unified number of individual sub- frequency patterns is z=iQR + j0, wherein0 =0,1,2, .. " ^-l , j0 =0,1,2,..., R-l , Ζ =0,1,2,· · ·,
Then period of the day from 11 p.m. to 1 a.m frequency pattern order is distributed to virtual resource blocks by RM/k-l according to sequence number, to sequence number
, the small sub- frequency patterns of the preferential Allotment Serial Number of scattered virtual resource blocks.
When existing concentration of transmissions has distributed transmission, i.e. ^ ≠ 0 again, there is β Physical Resource Block to be used for concentration of transmissions, then there are R-g sub- frequency patterns to distribute to scattered virtual resource blocks in each frequency patterns.The individual sub- frequency patterns Unified number of distributed transmission can be distributed to these, z=0,1,2, ..., (R-Q) M/k-, then period of the day from 11 p.m. to 1 a.m frequency pattern order is distributed to Virtual intend resource block, the small sub- frequency patterns of the scattered virtual resource blocks preferential Allotment Serial Number small to sequence number according to sequence number.
Method as described above, the position of each sub- frequency patterns of each frequency patterns in Physical Resource Block can be according to Application No.：200610005696.2,200610006600.4 or I and
The method that 200610002999.9 patent is provided determines that specific determination process refers to above-mentioned disclosed patent, will not be repeated here.These methods ensure that disturbs very little between any two frequency patterns or frequency patterns segment from different districts.When concentration of transmissions occupies a part of Physical Resource Block, the design of frequency patterns keeps constant, Virtual intends a part of sub- frequency patterns that resource block will get frequency patterns, that is, gets the segment of frequency patterns, and this way ensures that original interference randomization is still effective.
Another purpose of frequency patterns design, is by being rearranged to time-frequency lattice point order, obtaining frequency diversity gain and time diversity gain.Compared with prior art, it when user takes resource in units of frequency patterns or frequency patterns segment, may map on discontinuous frequency range and distinct symbols, fully obtain frequency diversity gain and time diversity gain.
The frequency patterns of each cell are pre-designed, are well known to base station and user.Therefore for dispersion transmission user, only need to know which sub- frequency patterns each scattered virtual resource blocks include, the mapping relations of each virtual resource block to physical resource block can be learnt, so as to learn the actual situation for taking running time-frequency resource of each virtual resource blocks.
This programme is exemplified below from the mapping method of scattered virtual resource block to physical resource block.
In the system of one 5M bandwidth, there are 12 Physical Resource Block in a sub- frame in, wherein 8 are used for concentration of transmissions, there are 3 scattered virtual resource blocks to will be mapped to that in physical channel.Still M=25, N=7 are taken.
According to above-mentioned condition, R=12, the Physical Resource Block position that concentration of transmissions takes in the given example of prior art one is continued to use in=3, Q=8, obtains j=0,1,3,4,6,7,9,10 Physical Resource Block is taken by concentration of transmissions.
Here illustrated in case of taking 1.Due to there is 8 Physical Resource Block to be taken by concentration of transmissions, so only 4 sub- frequency patterns in each frequency patterns, i.e. ,=2,5,8,11 sub- frequency patterns can be assigned to scattered virtual resource blocks, have sub- frequency patterns as 4x25=100.Then the every 25 sub- frequency patterns of sequentially 4 bars distribute to a virtual resource blocks.I.e.：
The scattered virtual resource blocks of p=0 are taken in 0,1,2,3,4,5 frequency patterns _ /=2,5,8,11 sub- frequency patterns,
In frequency patterns=2 sub- frequency patterns；
7=5,8,11 sub- frequency patterns in the frequency patterns of p=l scattered virtual resource blocks occupancy 6,
Sub- frequency patterns, and in=12 frequency patterns
=2,5 sub- frequency patterns；
Frequency patterns in 8,11 sub- frequency patterns, ζ=13,14,2,5,8,11 sub- frequency patterns in 15,16,17 frequency patterns, with
The sub- frequency patterns of middle production 2,5,8.
As shown in figure 4, the example in the running time-frequency resource occupancy situation of the scattered virtual resource blocks for 7=0, figure employs a kind of special frequency patterns, i.e., the sub-carrier positions identical pattern that each sub- frequency patterns take in Physical Resource Block on distinct symbols.In Fig. 3 the figure on the left side represent/7 frequency patterns of the virtual resource blocks are distributed to in=0 scattered virtual resource blocks, 7 middle figure expressions, and the figure on the right gives 3 Physical Resource Block in 12 Physical Resource Block；The part with Ge Hua Pattern represents that the scattered Virtual for distributing to=0 intends resource block and used in figure, and grey parts represent to distribute to the use of concentration of transmissions, and white portion represents that distributing to other scattered virtual resource blocks uses or unassigned.The Arabic numerals that Arabic numerals on the right of scattered virtual resource blocks and Physical Resource Block are represented on the right of subcarrier number 0-24, frequency patterns represent period of the day from 11 p.m. to 1 a.m frequency pattern number 0-11.
In addition, also providing a kind of distributor of running time-frequency resource in the embodiment of the present invention, the structural representation of described device refers to Fig. 5.Described device is used to determine that each Virtual intends position of the resource of resource block in Physical Resource Block to distribute running time-frequency resource, and the virtual resource blocks include concentrating virtual resource blocks and scattered virtual resource blocks；Wherein, described device includes：
Physical resource dividing unit 51, time-frequency pattern setting unit 52 and time-frequency resource distributing unit 53.Wherein, the physical resource dividing unit 51, for whole time-frequency plane to be divided into R equal-sized Physical Resource Block, each Physical Resource Block includes continuous symbol in continuous subcarrier on Μ frequency domain and Ν time domain, wherein R, Μ and Ν are positive integer；The time-frequency pattern setting unit 52, is connected with physical resource dividing unit 51, for setting one group of orthogonal frequency patterns for each cell, and fills up with it whole time-frequency plane；
In specific embodiment, a kind of time-frequency pattern setting unit is that each cell sets one group of frequency patterns equal in magnitude and orthogonal, and determines that the sizes of each frequency patterns is： kxRxN;The number of the frequency patterns is：M/k, k are M any one approximate numbers；The function of the time-frequency pattern setting unit is further：Can be by setting R equal-sized sub- frequency patterns to constitute a frequency patterns, the running time-frequency resource that the R sub- frequency patterns take is located in R different Physical Resource Block respectively, and each sub- frequency patterns take k subcarrier on every symbol.The time-frequency resource distributing unit
53, it is respectively connected with physical resource dividing unit 51 and time-frequency pattern setting unit 52, for Physical Resource Block to be distributed into concentration virtual resource blocks or/and scattered virtual resource blocks, the segment that wherein will be distributed over the frequency patterns in distributed transmission Physical Resource Block or frequency patterns distributes to a scattered virtual resource blocks, and the distributed transmission Physical Resource Block refers to distributing to the Physical Resource Block of scattered virtual resource blocks.The concrete function that frequency patterns wherein are distributed into scattered virtual resource blocks can be：For the sub- frequency patterns in frequency patterns to be distributed into scattered virtual resource blocks, wherein the running time-frequency resource that the period of the day from 11 p.m. to 1 a.m frequency pattern takes is located in the Physical Resource Block for distributing to distributed transmission；
More specifically, frequency patterns and the sequence number of scattered virtual resource blocks are set respectively, and the part not taken in the frequency patterns by concentration of transmissions is sequentially assigned to scattered virtual resource blocks by sequence number, and when a segment of a frequency patterns is as last the frequency patterns segment for distributing to virtual resource blocks, the next segment for distributing the frequency patterns is used as first frequency patterns segment of next virtual resource blocks；Operation can also be simplified using the division of sub- frequency patterns, i.e. the function of the resource allocation unit can be described more specifically as, scattered Virtual is set to intend the sequence number of resource block and sub- frequency patterns respectively, wherein described period of the day from 11 p.m. to 1 a.m frequency pattern is located in the Physical Resource Block for distributing to distributed transmission, and the sub- frequency patterns are sequentially assigned into scattered virtual resource blocks by sequence number.
The unit of apparatus described above realizes that what function referred to the above method implements process, will not be repeated here.
In addition, the embodiment of the present invention provides a kind of wireless communication system again, the structural representation of the system refers to Fig. 6.The system includes base station 61 and the mobile station 62 with base station communication, wherein described base station includes time-frequency resource allocating device 611, for determining position of the resource of each virtual resource blocks in Physical Resource Block, wherein scattered position of the virtual resource blocks in Physical Resource Block is allocated according to frequency patterns；Also, the base station is used to the running time-frequency resource information of the resource of each virtual resource blocks position in physics source block notifying mobile station；
The mobile station 62, according to the running time-frequency resource information of the resource of received each virtual resource blocks position in physics source block, adjusts the time-frequency location for receive information.
The time-frequency resource allocating device 611 includes：Physical resource dividing unit 6111, time-frequency pattern setting unit 6112 and time-frequency resource distributing unit 6113, wherein, the function of unit and effect are identical with the function of unit described in Fig. 5 and effect, referring specifically to above-mentioned, will not be repeated here.
Described above is only the preferred embodiment of the present invention, it is noted that for the art
For those of ordinary skill, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (15)
- Claim1st, a kind of distribution method of running time-frequency resource, it is characterised in that including：Whole time-frequency plane is divided into R equal-sized Physical Resource Block, each Physical Resource Block is positive integer；For cell, one group of orthogonal frequency patterns is set；Physical Resource Block is distributed into concentration virtual resource blocks or/and scattered virtual resource blocks, the segment that wherein will be distributed over the frequency patterns in distributed transmission Physical Resource Block or frequency patterns distributes to a scattered virtual resource blocks, and the distributed transmission Physical Resource Block refers to the Physical Resource Block for distributing to scattered virtual resource blocks.2nd, distribution method according to claim 1, it is characterised in that described to set one group of orthogonal frequency patterns for each cell, the specification of each frequency patterns is： kxRxN;The number of the frequency patterns is：M/k, k are M any one approximate numbers.3rd, distribution method according to claim 2, it is characterised in that set R equal-sized sub- frequency patterns to constitute a frequency patterns, the running time-frequency resource that the R sub- frequency patterns take is located in R different Physical Resource Block respectively.4th, distribution method according to claim 3, it is characterised in that the sub- frequency patterns take k subcarrier on a symbol.5th, distribution method according to claim 1, it is characterised in that the frequency patterns for different districts setting are identical or differ.6th, distribution method according to claim 1, it is characterised in that described distribute to Physical Resource Block concentrates Virtual plan resource blocks or/and scattered virtual resource blocks to specifically include：By Physical Resource Block be fully allocated to concentrate virtual resource blocks be either fully allocated to scattered virtual resource blocks orA part of Physical Resource Block is distributed into concentration virtual resource blocks, remaining Physical Resource Block is distributed into scattered virtual resource blocks.7th, the distribution method according to claim 3 or 4, it is characterized in that, sub- frequency patterns in frequency patterns are distributed into scattered virtual resource blocks, wherein the running time-frequency resource that the period of the day from 11 p.m. to 1 a.m frequency pattern takes is located in the Physical Resource Block for distributing to distributed transmission. 8th, distribution method according to claim 1, it is characterised in that being confused the detailed process that the segment of frequency patterns or frequency patterns is distributed into scattered virtual resource blocks includes：Respectively to frequency patterns and/or the segment and scattered virtual resource block sequencing of frequency patterns, and the segment of the frequency patterns not taken by concentration of transmissions or frequency patterns is sequentially assigned to scattered virtual resource blocks.9th, the distribution method according to claim 8, it is characterised in that the detailed process that the segment by frequency patterns or frequency patterns distributes to scattered virtual resource blocks includes：Scattered virtual resource blocks and sub- frequency patterns are sorted respectively, wherein the period of the day from 11 p.m. to 1 a.m frequency pattern is located in the Physical Resource Block for distributing to distributed transmission；And the period of the day from 11 p.m. to 1 a.m frequency pattern order is distributed into scattered virtual resource blocks.10th, distribution method according to claim 1, it is characterised in that methods described also includes：One or more Virtual plan resource blocks are distributed into a kind of channel or a user uses.11st, a kind of distributor of running time-frequency resource, for determining position of the resource of each virtual resource blocks in Physical Resource Block, to distribute running time-frequency resource, the virtual resource blocks include concentrating virtual resource blocks and scattered virtual resource blocks;Characterized in that, the device includes：Physical resource dividing unit, for whole time-frequency plane to be divided into R equal-sized Physical Resource Block, each Physical Resource Block includes continuously symbol, wherein R in continuous subcarrier on M frequency domain and N number of time domain, and M and N are positive integer；Time-frequency pattern setting unit, is connected with physical resource dividing unit, for setting one group of orthogonal frequency patterns for each cell, and fills up with it whole time-frequency plane；Time-frequency resource distributing unit, it is respectively connected with physical resource dividing unit and time-frequency pattern setting unit, for distributing Physical Resource Block to concentration virtual resource blocks or/and scattered virtual resource blocks, the segment of frequency patterns or frequency patterns wherein in distributed transmission Physical Resource Block is assigned to a scattered virtual resource blocks, and the distributed transmission Physical Resource Block refers to the Physical Resource Block for distributing to scattered virtual resource blocks.12nd, the time-frequency resource allocating device according to claim 11, it is characterised in that the time-frequency pattern setting unit is that the specification of each frequency patterns in one group of orthogonal frequency patterns that each cell is set is： kxRxN;The number of the frequency patterns is：M/k, k are M any one approximate numbers.13rd, the time-frequency resource allocating device according to claim 12, it is characterised in that the time-frequency The Group frequency patterns that pattern setting unit is set include R equal-sized sub- frequency patterns, the time-frequency money source point Do that the R sub- frequency patterns take is located in R different Physical Resource Block, and each sub- frequency patterns take k subcarrier on every symbol.14th, the time-frequency resource allocating device according to claim 11 to 13 any one, it is characterized in that, sub- frequency patterns in frequency patterns are distributed to scattered virtual resource blocks by the time-frequency resource distributing unit, wherein the running time-frequency resource that the period of the day from 11 p.m. to 1 a.m frequency pattern takes is located in the Physical Resource Block for distributing to distributed transmission.15th, the time-frequency resource allocating device according to claim 11, it is characterized in that, frequency patterns are distributed to scattered virtual resource blocks by the time-frequency resource distributing unit, scattered virtual resource blocks are sequentially assigned to specifically for respectively to frequency patterns and scattered virtual resource block sequencing, and by the segment of the frequency patterns not taken by concentration of transmissions or frequency patterns.16th, the time-frequency resource allocating device according to claim 15, it is characterized in that, frequency patterns are distributed to scattered virtual resource blocks by the time-frequency resource distributing unit, scattered virtual resource blocks and sub- frequency patterns are sorted respectively, wherein the period of the day from 11 p.m. to 1 a.m frequency pattern is located in the Physical Resource Block for distributing to distributed transmission；And the period of the day from 11 p.m. to 1 a.m frequency pattern order is distributed into scattered virtual resource blocks.17th, a kind of wireless communication system, it is characterised in that the system includes base station and the mobile station with base station communication, wherein the base station includes：Time-frequency resource allocating device, for determining position of the resource of each virtual resource blocks in Physical Resource Block, wherein position of the scattered virtual resource blocks in Physical Resource Block is just allocated according to frequency patterns；The base station is used to the running time-frequency resource information of the resource of each virtual resource blocks position in physics source block notifying mobile station；The mobile station, according to the running time-frequency resource information of the resource of received each virtual resource blocks position in physics source block, adjusts the time-frequency location for receive information.18th, the wireless communication system according to claim 17, it is characterised in that the time-frequency resource allocating device includes：Physical resource dividing unit, for time-frequency plane to be divided into R equal-sized Physical Resource Block, each Physical Resource Block includes on M frequency domain on continuous subcarrier and N number of time domain continuously symbol, wherein R, and M and N are positive integer； Time-frequency pattern setting unit, is connected with physical resource dividing unit, is that each cell sets one group of orthogonal frequency patterns according to running time-frequency resource, and fill up with it whole time-frequency plane；Time-frequency resource distributing unit, it is respectively connected with physical resource dividing unit and time-frequency pattern setting unit, Physical Resource Block is distributed into concentration virtual resource blocks or/and scattered virtual resource blocks, the segment of frequency patterns or frequency patterns wherein in distributed transmission Physical Resource Block is assigned to a scattered virtual resource blocks, and the distributed transmission Physical Resource Block refers to the Physical Resource Block for distributing to scattered virtual resource blocks.
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| CN103781081A (en) * | 2014-02-28 | 2014-05-07 | 清华大学 | Opportunity sharing-based wireless virtual resource allocation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101426268B (en) * | 2007-11-02 | 2010-08-25 | 大唐移动通信设备有限公司 | Pilot resource distribution method, system and equipment |
| US8761192B2 (en) * | 2007-11-07 | 2014-06-24 | Apple Inc. | Methods and systems for channelization |
| PT2890201T (en) * | 2007-12-10 | 2016-12-12 | ERICSSON TELEFON AB L M (publ) | Improved scheduling in a cellular system |
| ES2955033T3 (en) * | 2008-01-04 | 2023-11-28 | Panasonic Holdings Corp | Wireless communication base station device and channel arrangement method |
| GB2457242A (en) * | 2008-02-05 | 2009-08-12 | Nec Corp | Resource allocation in a communication system |
| CN101540625B (en) * | 2008-03-21 | 2012-12-19 | 电信科学技术研究院 | Signal reception and detection method, mobile terminal and method and device for signal transmission |
| CN101605117B (en) * | 2008-06-13 | 2012-09-05 | 中兴通讯股份有限公司 | Pilot frequency distributing method and system |
| CN101742668B (en) * | 2008-11-06 | 2012-01-25 | 中兴通讯股份有限公司 | Resource unit mapping method |
| CN101778343B (en) * | 2009-01-14 | 2014-03-12 | 中兴通讯股份有限公司 | Setting method and device of physical resource blocks of MBMS (Multimedia Broadcast Multicast Service) in long term evolution (LTE) system |
| CN102088309B (en) * | 2009-12-04 | 2014-09-10 | 重庆无线绿洲通信技术有限公司 | Method and device for generating reference signal used for estimating channel quality |
| CN102726109B (en) * | 2010-01-26 | 2016-01-20 | Lg电子株式会社 | The method and apparatus of Resources allocation in a wireless communication system |
| CN102149202B (en) * | 2010-02-10 | 2014-10-29 | 电信科学技术研究院 | Method and device for distributing uplink feedback resources |
| WO2016070415A1 (en) * | 2014-11-07 | 2016-05-12 | Mediatek Singapore Pte. Ltd. | Methods for resource allocation |
| CN107846726B (en) * | 2016-09-19 | 2019-08-09 | 上海朗帛通信技术有限公司 | A kind of method and apparatus of transmission power adjustment in UE, base station |
| CN115941563B (en) * | 2023-03-14 | 2023-05-02 | 湖南智芯微科技有限公司 | Task monitoring method and device integrating multi-command platform information |
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| CN103781081A (en) * | 2014-02-28 | 2014-05-07 | 清华大学 | Opportunity sharing-based wireless virtual resource allocation method |
| CN103781081B (en) * | 2014-02-28 | 2017-05-24 | 清华大学 | Opportunity sharing-based wireless virtual resource allocation method |
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