CN101667985B - Method and device for allocating resource units - Google Patents
Method and device for allocating resource units Download PDFInfo
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- CN101667985B CN101667985B CN2008102122012A CN200810212201A CN101667985B CN 101667985 B CN101667985 B CN 101667985B CN 2008102122012 A CN2008102122012 A CN 2008102122012A CN 200810212201 A CN200810212201 A CN 200810212201A CN 101667985 B CN101667985 B CN 101667985B
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Abstract
The invention provides a method and a device for allocating resource units. The method comprises that: when uplink wireless resources are subjected to distributed resource unit allocation, the size of the distributed resources units under different transmission time interval configurations and the structure of minimal units composing of the distributed resource units are subjected to at least one of the following configurations: one of the size and the structure is configured to be fixed and the other is configured to be not fixed; both are configured to be fixed; and both are configured to be not fixed, wherein the transmission time interval is a time interval occupied by a transmission data block; and the size of the distributed resource units is a product of the number of the minimal units composing of the distributed resource units and the number of subcarriers in the minimal units. The technical scheme can flexibly meet scheduling requirements of different scenes, can reduce the complexity of design, maintains the uniformity of the design, fully and highly efficiently utilizes the resources of a system, effectively ensures the coverage of the system and improves the performance of the system.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of distribution method and device of resource units.
Background technology
At present, along with the evolution and the development of Communication Technique of network, OFDM (Orthogonal Frequency Division Multiplexing; Abbreviating OFDM as) technology allows each sub-channel spectra to overlap each other to improve spectrum efficiency; In addition, at present, multiple access technology adopts orthogonal frequency division multiplexing multiple access to insert (Orthogonal Frequency DivisionMultiple Access; Abbreviate OFDMA as); That is, a plurality of users share full range band frequency spectrum resource on a symbol, thereby obtain multi-user diversity gain.But also there are some problems in above-mentioned The Application of Technology, and for example, the distribution of resource indication expense and efficient are to the influence of broadband system.
In up (method of terminal to base station) and descending (base station is to the method at terminal) transmission, the design of resource allocation unit has identical requirement to flexibility, signaling consumption, the resource utilization of scheduling, yet; For up resource allocation unit; Also need some special considerations, for example, at the terminal of cell edge; Its power limited; Thereby be coated with very big influence to up, therefore, how the design resource allocation units utilize with the raising, the system resource that guarantee scheduling, moderate signaling consumption, up covering flexibly fully efficiently is a problem that presses for solution.
At present; At Institute of Electrical and Electronics Engineers (Institute for Electrical andElectronic Engineers; Abbreviate IEEE as) among the 802.16e; The mapping of ascending resource is to be preferably principle with time domain, and purpose is to improve ascending power, guarantees covering and edge cell user's throughput.But the time domain priority principle still exists maximum power spectral densities to be limited by the problem on some symbol or the subframe.In correlation technique, proposed subframe is expanded, promptly; Consideration is carried out the cascade expansion with subframe, and the basic resource blocks on each subframe is carried out the cascade expansion, and its size is a N basic resource blocks doubly; The castering action of the method through acquiring a certain degree to Power Groud in the expansion of time domain; And alleviated the problem of up covering, reduced the expense of signaling, yet because the resource granularity of the Resource Block of expansion is bigger; Thereby only be applicable to big data packet traffic, make dispatching flexibility reduce.
In correlation technique; In IEEE802.16m Study on standards process; Confirmed two types Resource Unit: centralized (Localized Resource Unit abbreviates LRU as) and distributed resource units (Distributed Resource Unit abbreviates DRU as); That is, the physical sub-carrier mapping mode of Resource Unit adopts centralized or distributed mapping mode.Wherein, the centralized resources unit is used to obtain the frequency selectivity gain, and distributed resource units is used to obtain frequency diversity gain.The base station is divided system resource with demand distributed resource according to centralized; For the centralized resources unit; The subcarrier of logical resource block and Physical Resource Block directly shines upon; For distributed resource, be resource to be carried out the sub-channelizing process with minimum unit (tile), logical resource block and physical sub-carrier are shone upon.
In distributed resource units, the size of a tile is N
SubcarrierMultiply by subframe internal symbol number, N
SubcarrierValue depend on the distributed resource units type, for conventional distributed resource units, N
SubcarrierCan be 6, that is, the size of tile is 6 to multiply by subframe internal symbol number, that is to say, size be 18 multiply by subframe internal symbol number DRU promptly form by three tile.
The user who is in cell edge generally adopts distributed resource units to obtain frequency diversity gain, and the while is according to service quality (Quality of Service the abbreviates QoS as) requirement of customer service; For the low business of delay requirement, can adopt different Transmission Time Interval (Transmission Time Interval abbreviates TTI as) to carry out transmission of data blocks; Promptly; When dispatching, among the TTI a plurality of subframes are arranged, for example with the mode of subframe cascade; Can comprise 1,2,3 or 4 sub-frame, thereby the raising system covers or improves the throughput of cell edge.
In correlation technique, in different TTI configuration down, for the design that is used for the distributed resource module unit that the subframe cascade dispatches provides a kind of technical scheme; This technical scheme is with conventional distributed resource blocks promptly, and 18* subframe internal symbol number is according to the preferential resource allocation principle of time domain; Distribute on the subframe in TTI, the resource distribution mode of the similar IEEE802.16e of this method, its advantage is that the Resource Block design is unified; Under the different TTI configuration, its size is identical, still; When the Resource Block DRU number of distributing was not the integral multiple of number of sub frames in the TTI, power division will be uneven on each subframe, and; Its maximum power spectral densities is subject on the maximum subframe of Resource Block, for 16e, on covering, does not improve to some extent.
Can find out from above-mentioned analysis; Up covering problem is the key factor that ascending resource allocation units design demand is considered, how to carry out the subframe cascade under the Resource Block design, how to optimize the following Resource Block design of different TTI configuration, and effectively improve up covering, simultaneously provide sufficient dispatching flexibility, to reduce system complexity be must consideration in the design of ascending resource piece and need improved problem.Yet, the technical scheme that addresses the above problem is not proposed at present as yet.
Summary of the invention
Consider in the design of optimizing the Resource Block under the different TTI configuration under the subframe cascade and can not improve the problem of up covering and make the present invention; For this reason; Main purpose of the present invention is to provide a kind of distribution method and device of resource units, to solve the problems referred to above that exist in the correlation technique.
According to an aspect of the present invention, a kind of distribution method of resource units is provided, has been used for pair of orthogonal Frequency Division Multiplexing system ascending wireless resource and on different Transmission Time Intervals, carries out the distribution of distributed resource unit.
Distribution method according to resource units of the present invention comprises: divide timing in that ascending wireless resource is carried out distributed resource units, the size of different Transmission Time Intervals configurations distributed resource units is down carried out following at least one configuration with the structure of the minimum unit that constitutes distributed resource units: one of them is configured to fix another cannot be configured to fixingly; Both all are configured to fix; Both all cannot be configured to fixingly, and wherein, Transmission Time Interval is the time interval that transmission data block is shared, and the size of distributed resource units is the minimum unit number of formation distributed resource units and the product of minimum unit sub-carriers number.
Preferably; Under the big or small unfixed situation of distributed resource units only; Distributed resource units under the different Transmission Time Interval configurations is made up of the identical minimum unit of structure; And minimum unit is distributed in each sub-frame of Transmission Time Interval uniformly, and is discrete distribution in each sub-frame.
Preferably; Under the unfixed situation of the structure of the minimum unit that only constitutes distributed resource units; The size of the distributed resource units under the different Transmission Time Interval configurations is fixed; And the minimum unit inequality by structure constitutes, and minimum unit is distributed in respectively in each sub-frame of Transmission Time Interval.
Preferably; In the size of distributed resource units and constitute under all fixing situation of the structure of minimum unit of distributed resource units; Distributed resource units under the different Transmission Time Interval configurations is made up of structure minimum unit inequality; And in each sub-frame that is distributed in Transmission Time Interval that minimum unit disperses, the minimum unit number in each sub-frame is identical.
Preferably; In the size of distributed resource units and constitute under all fixing situation of the structure of minimum unit of distributed resource units; Distributed resource units under the different Transmission Time Interval configurations is made up of structure minimum unit inequality; And in each sub-frame that is distributed in Transmission Time Interval that minimum unit disperses, the minimum unit number in each sub-frame is inequality.
Preferably; In the size of distributed resource units and constitute under all unfixed situation of structure of minimum unit of distributed resource units; Distributed resource units under the different Transmission Time Interval configurations is made up of structure minimum unit inequality; And minimum unit is uniformly discrete to be distributed in each sub-frame of Transmission Time Interval, and the minimum unit number in each sub-frame is identical.
Preferably; In the structure of the size of distributed resource units and the minimum unit that constitutes distributed resource units one is fixing, or in the size of said distributed resource units and constitute under all unfixed situation of structure of minimum unit of said distributed resource units; Under the configuration of different Transmission Time Intervals, the minimum unit number that constitutes distributed resource units depends on the number of sub frames in the different Transmission Time Intervals.
Preferably, in the size of distributed resource units and constitute under all fixing situation of the structure of minimum unit of distributed resource units, under the configuration of different Transmission Time Intervals, the minimum unit number that constitutes distributed resource units is identical.
Preferably; The size of or distributed resource units fixing and constituting under all fixing situation of the structure of minimum unit of distributed resource units in the size of distributed resource units only; The base station is that unit carries out the sub-channelizing process to distributed resource units with the minimum unit of unifying structure on the subframe of different Transmission Time Intervals, and the sub-channelizing process on the different subframes is identical.
Preferably; The size of or distributed resource units fixing and constituting under all fixing situation of the structure of minimum unit of distributed resource units in the size of distributed resource units only; The base station is that unit carries out the sub-channelizing process to distributed resource units with the minimum unit of unifying structure on the subframe of different Transmission Time Intervals, and the sub-channelizing process on the different subframes is inequality.
Preferably; Fixing in the structure of the minimum unit that only constitutes distributed resource units, or in the size of distributed resource units and constitute under all unfixed situation of structure of minimum unit of distributed resource units; The base station is that unit respectively carry out sub-channelizing process with the minimum unit according to the structure of the minimum unit of distributed resource units on the subframe of different Transmission Time Intervals, and the sub-channelizing process on the subframe of different minimum units place is identical.
Preferably; Fixing in the structure of the minimum unit that only constitutes distributed resource units, or in the size of distributed resource units and constitute under all unfixed situation of structure of minimum unit of distributed resource units; The base station is that unit respectively carry out sub-channelizing process with the minimum unit according to the structure of the minimum unit of distributed resource units on the subframe of different Transmission Time Intervals, and the sub-channelizing process on the subframe of different minimum units place is inequality.
According to a further aspect in the invention, a kind of distributor of resource units is provided, has been used for pair of orthogonal Frequency Division Multiplexing system ascending wireless resource and on different Transmission Time Intervals, carries out the distribution of distributed resource unit.
Distributor according to resource units of the present invention is used for: divide timing in that ascending wireless resource is carried out distributed resource units, the size of different Transmission Time Intervals configurations distributed resource units is down carried out following at least one configuration with the structure of the minimum unit that constitutes distributed resource units: one of them is configured to fix another cannot be configured to fixingly; Both all are configured to fix; Both all cannot be configured to fixingly, and wherein, Transmission Time Interval is the time interval that transmission data block is shared, and the size of distributed resource units is the minimum unit number of formation distributed resource units and the product of minimum unit sub-carriers number.
By means of technical scheme of the present invention; Through variation to size with the structure of the minimum unit of the said distributed resource units of formation of different Transmission Time Intervals configuration distributed resource units down; The dispatching requirement that can adapt to different scenes flexibly, reduce design complexity, kept the unification of design, fully efficiently utilized the resource of system, effectively guaranteed the covering of system and improved the performance of system.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the distribution method of the resource units of the embodiment of the invention;
Fig. 2 a is the structural representation according to Resource Block under the different TTI configuration in first kind of situation of the distribution method of the resource units of the embodiment of the invention;
Fig. 2 b is to be the structural representation of Resource Block under 4 the configuration according to TTI in first kind of situation of the distribution method of the resource units of the embodiment of the invention;
Fig. 3 disposes minimum unit distribution mode sketch map on different subframes of Resource Block down according to TTI in first kind of situation of the distribution method of the resource units of the embodiment of the invention;
Fig. 4 is the sketch map one according to the instance 1 of the distribution method of the resource units of the embodiment of the invention;
Fig. 5 a is the sketch map two according to the instance 1 of the distribution method of the resource units of the embodiment of the invention;
Fig. 5 b is the sketch map according to the instance 7 of the distribution method of the resource units of the embodiment of the invention;
Fig. 6 is the sketch map according to the instance 2 of the distribution method of the resource units of the embodiment of the invention;
Fig. 7 is the sketch map according to the instance 3 of the distribution method of the resource units of the embodiment of the invention;
Fig. 8 is the sketch map according to the instance 4 of the distribution method of the resource units of the embodiment of the invention;
Fig. 9 is the sketch map according to the instance 5 of the distribution method of the resource units of the embodiment of the invention;
Figure 10 is the sketch map according to the instance 6 of the distribution method of the resource units of the embodiment of the invention;
Figure 11 is the block diagram according to the distributor of the resource units of the embodiment of the invention.
Embodiment
Functional overview
At present, in correlation technique, in different TTI configuration down, the design of the distributed resource module unit that the subframe cascade is dispatched provides a solution, with the conventional distributed resource blocks on the sub-frame (promptly 18
*Subframe internal symbol number) be unit; According to the preferential resource allocation principle of time domain; Distribute on the subframe in TTI; The shortcoming of this method is, when can not mean allocation on each sub-frame of total resources number of blocks in TTI of distributing, can cause maximum power spectral densities to be subject to the many subframes of resource block assignments quantity.
To above-mentioned problem; The invention provides a kind of technical scheme; The base station is according to user's QoS of survice requirement; Can carry out the scheduling of subframe concatenation-type for the not high service-user of delay requirement, promptly comprise greater than 1 sub-frame in a Transmission Time Interval TTI, distribute the distributed resource blocks design of adopting under the different TTI configurations for different subframe cascade scheduled resources; Be called various subframe cascade distributed resource blocks again, the structure of every kind of subframe cascade distributed resource blocks adapts to the resource allocation under such scheduling mode respectively.
Particularly, be defined in the different TTI configuration down, under the big or small unfixed situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is fixed; Under the fixed-size situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is not fixed; Perhaps under the fixed-size situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is also fixed.Below, technical scheme of the present invention is carried out detailed explanation.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Method embodiment
According to embodiments of the invention, a kind of distribution method of resource units is provided, be used for pair of orthogonal Frequency Division Multiplexing system ascending wireless resource and on different Transmission Time Intervals, carry out the distribution of distributed resource unit.Fig. 1 is the flow chart according to the distribution method of the resource units of the embodiment of the invention, and is as shown in Figure 1, comprises following processing:
Step S102; Divide timing in that ascending wireless resource is carried out distributed resource units, the size and the structure of the minimum unit that constitutes distributed resource units of different Transmission Time Intervals configurations distributed resource units are down carried out following configuration one of at least: one of them is configured to fix another cannot be configured to fixingly; Both all are configured to fix; Both all cannot be configured to fixingly, and wherein, Transmission Time Interval is the time interval that transmission data block is shared, and the size of distributed resource units is the minimum unit number of formation distributed resource units and the product of minimum unit sub-carriers number.Need to prove that above-mentioned four kinds of configurations of the present invention can combination in any be used.
Step S104 carries out the distribution of distributed resource units to the Radio Resource that configures.
Can find out that from above-mentioned processing technical scheme of the present invention can be divided into three kinds of situation, first kind of situation: under the different TTI configuration, under the big or small unfixed situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is fixed; Second kind of situation: under the fixed-size situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is not fixed; The third situation: under the fixed-size situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is also fixed; The 4th kind of situation: under the big or small unfixed situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is not also fixed.Below, four kinds of above-mentioned situation are carried out detailed explanation.
First kind of situation: under the different TTI configuration, under the big or small unfixed situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is fixed.Under above-mentioned situation, should be noted that the following aspects:
1, the DRU under the different TTI configuration is made up of the identical minimum unit tile of structure; Wherein, when above-mentioned Transmission Time Interval TTI is meant scheduling, the time interval that transmission data block is shared; And can be according to the configuration of system uplink number of sub-frames; The number of sub-frames that TTI comprised can be 1,2...n, and wherein n is the maximum number of sub-frame of uplink; And above-mentioned minimum unit tile is meant the least unit that constitutes a Resource Block.Shown in Fig. 2 a, suppose that the size of the base unit tile of formation Resource Block is a 6* subframe internal symbol number, for a conventional subframe, its symbolic number is 6, then the size of tile (structure) is 6*6.3 tile of Fig. 2 a leftmost side and the rightmost side are the identical tile of 6*6 structure, and 4 tile in the middle of Fig. 2 a also are the identical tile of 6*6 structure.
2, various TTI configurations constitute on the even discrete distribution of tile each sub-frame in TTI of DRU down, and above-mentioned even discrete distribution is meant that the tile number that constitutes a DRU on each subframe in the TTI is identical, and discrete distribution.Shown in Fig. 2 a, the number of sub frames in TTI is 1, and the base unit tile that constitutes Resource Block under 3 the situation, distributes 3 tile in 1 sub-frame; Number of sub frames in TTI is 2, and the base unit tile that constitutes Resource Block under 4 the situation, distributes 2 tile in 1 sub-frame; Number of sub frames in TTI is 3, and the base unit tile that constitutes Resource Block under 3 the situation, distributes 1 tile in 1 sub-frame; Shown in Fig. 2 b, the number of sub frames in TTI is 4, and the base unit tile that constitutes Resource Block under 4 the situation, distributes 1 tile in 1 sub-frame.
3, the tile number of the DRU under the configuration of formation different TTI can be different, depend on the number of subframes in the TTI, and the tile number in each subframe is that total tile number is divided by number of sub frames.Shown in Fig. 2 a, the number of sub frames in TTI is 1, and the base unit tile that constitutes Resource Block is under 3 the situation, and the tile number in each subframe is 3 divided by 1,3 of the tile numbers in each subframe; Number of sub frames in TTI is 2, and the base unit tile that constitutes Resource Block is under 4 the situation, and the tile number in each subframe is 4 divided by 2, distributes 2 tile in each subframe; Number of sub frames in TTI is 3, and the base unit tile that constitutes Resource Block is under 3 the situation, and the tile number in each subframe is 3 divided by 3, distributes 1 til in each subframe; Shown in Fig. 2 b, the number of sub frames in TTI is 4, and the base unit tile that constitutes Resource Block is under 4 the situation, and the tile number in each subframe is 4 divided by 4, distributes 1 tile in each subframe.
4, the DRU size under the different TTI configuration can be different; The size of DRU under above-mentioned different TTI is provided with is the sub-carrier number of DRU; Size decision by tile number that constitutes DRU and tile; Sub-carrier number in the DRU is the product of the sub-carrier number in tile number and the tile, and under the different TTI configuration, this product can be different.
5, the base station is that unit carries out the sub-channelizing process to distributed resource with unified tile on each subframe, and the sub-channelizing process of each sub-frame can be identical or different.Constitute on tile each subframe in TTI of DRU, pairing physical sub-carrier position can be identical or different.Wherein, above-mentioned distributed resource sub-channelizing process is meant that carrying out subcarrier with minimum unit tile resets, and the tile that constitutes a DRU is distributed on each sub-frame in the TTI; The sub-channelizing process on each sub-frame is depended in the position of its tile on the different subframes; As shown in Figure 3, the sub-channelizing process of each subframe can be identical or because of different sub interframe further stagger with certain frequency-hopping mode different, for example; Suppose to comprise among the TTI 2 sub-frame; Distributed resource blocks DRU is made up of the tile of m discrete distribution, supposes that the m value is 4, can further stagger different shown in Fig. 3 left side with certain frequency-hopping mode because of different sub interframe; Sub-channelizing process that also can each subframe can be identical, shown in Fig. 3 right side.
Below, in conjunction with accompanying drawing, first kind of situation is illustrated.
Instance 1
The size of supposing the base unit tile of formation Resource Block is a 6* subframe internal symbol number, and for a conventional subframe, its symbolic number is 6, and then the size of tile (structure) is 6*6, the variable size of the distributed resource blocks DRU under the different TTI configuration.When TTI was set to 1 sub-frame, distributed resource blocks DRU was made up of the tile of m discrete distribution, supposes that the m value is 3, and then the size of DRU is 3*6*6.
As shown in Figure 4; When TTI is set to 2 sub-frame; One sub-frame cascade distributed resource blocks DRU is made up of the tile of m discrete distribution, supposes that the m value is 4, and then the size of DRU is 4*6*6; The tile that 2 discrete distribution are arranged respectively on each subframe, the tile on two sub-frame is in staggered distribution with certain frequency hopping mode.
Shown in Fig. 5 a, when TTI was set to 3 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution; Suppose that the m value is 3; Then the size of DRU is 3*6*6, and 1 tile is arranged respectively on each subframe, and the tile on three sub-frame is in staggered distribution with certain frequency hopping mode.
Shown in Fig. 5 a, when TTI was set to 4 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution; Suppose that the m value is 4; Then the size of DRU is 4*6*6, and 1 tile is arranged respectively on each subframe, and the tile on four sub-frame is in staggered distribution with certain frequency hopping mode.
Instance 2
As shown in Figure 6, when TTI was set to 2 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution; Suppose that the m value is 2; Then the size of DRU is 2*6*6, and 1 tile is arranged respectively on each subframe, and the tile on two sub-frame is in staggered distribution with certain frequency hopping mode.
Second kind of situation: under the fixed-size situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is not fixed.Under above-mentioned situation, should be noted that the following aspects:
1, the DRU under the different TTI configuration is made up of the minimum unit tile of identical or different structure, is provided with down for different TTI, constitutes the corresponding different TTI setting of tile structure of DRU, and some TTI is provided with down can be identical, and some TTI is provided with down can be different.
2, various TTI configurations constitute on the even discrete distribution of tile each sub-frame in TTI of DRU down, and wherein, above-mentioned even discrete distribution is meant that the tile number that constitutes a DRU on each subframe in the TTI is identical, and discrete distribution.
3, the tile number of the DRU under the configuration of formation different TTI can be different, depend on the number of subframes in the TTI; That is to say that setting is that number of subframes is different in the TTI for different TTI, the total tile number in its DRU can be different, and the tile number in each subframe is that total tile number is divided by number of sub frames.
4, the DRU size under the different TTI configuration is identical; That is to say, the size of the DRU under different TTI is provided with promptly, sub-carrier number is identical, by the size decision of the tile of tile number that constitutes DRU and respective type.Sub-carrier number in the DRU is the product of the sub-carrier number in tile number and the tile, and under the different TTI configuration, this product is identical.
5, the base station is on each subframe; Is that unit carries out the sub-channelizing process respectively to distributed resource according to corresponding one or more tile; Each sub-frame sub-channelizing process can be identical or different; And, constituting on tile each subframe in TTI of DRU, pairing physical sub-carrier position can be identical or different.That is to say; Constitute on the even discrete distribution of tile each sub-frame in a TTI of a DRU; The sub-channelizing process on each sub-frame is depended in the position of its tile on the different subframes, can be identical or further stagger different with certain frequency-hopping mode because of different sub interframe.
Below, in conjunction with accompanying drawing, second kind of situation is illustrated.
Instance 3
The size of distributed resource blocks DRU under the different TTI configuration is consistent, but the tile structure can be inequality.The size of supposing the base unit tile of formation Resource Block is 6 number of sub-carrier * subframe internal symbol number and 9 number of sub-carrier
*Subframe internal symbol number, for a conventional subframe, its symbolic number is 6, then the size of tile (structure) is 6*6 and 9*6.TTI is set to 1,2 and 3 sub-frame.
As shown in Figure 7, when TTI was set to 1 sub-frame, distributed resource blocks DRU was made up of the tile of m discrete distribution, supposes that the m value is 3, and tile is 6*6, and the size of DRU is 3*6*6.
As shown in Figure 7, when TTI was set to 2 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 2, and tile is 9*6, and then the size of DRU is 2*9*6.1 tile is arranged respectively on each subframe, and the tile on two sub-frame is in staggered distribution with certain frequency hopping mode.
As shown in Figure 7; When TTI was set to 3 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 3; Tile is 6*6; Then the size of DRU is 3*6*6, and 1 tile is arranged respectively on each subframe, and the tile on three sub-frame is in staggered distribution with certain frequency hopping mode.
When TTI was set to 4 sub-frame, the structure of a sub-frame cascade distributed resource blocks DRU was identical, as shown in Figure 7 when being set to 2 sub-frame with TTI; Stride two sub-frame, form, suppose that the m value is 2 by the tile of m discrete distribution; Tile is 9*6; Then the size of DRU is 2*9*6, on each subframe 1 tile is arranged respectively in the DRU, and the tile on two sub-frame is in staggered distribution with certain frequency hopping mode.
Instance 4
Under many circumstances, system reasonably arranges the kind of different TTI setting according to the configuration of sub-frame of uplink number and user's business demand.Suppose to have distributed 2 sub-frame of uplink, TTI is set to 1 and 2 sub-frame cascades, and then the size of tile can be chosen as 9*6.
As shown in Figure 8, when TTI was set to 1 sub-frame, distributed resource blocks DRU was made up of the tile of m discrete distribution, supposes that the m value is 2, and then the size of DRU is 2*9*6.
As shown in Figure 8, when TTI was set to 2 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 2, and then the size of DRU is 2*9*6.1 tile is arranged respectively on each subframe, and the tile on two sub-frame is in staggered distribution with certain frequency hopping mode.
Instance 5
Under many circumstances, system reasonably arranges the kind of different TTI setting according to the configuration of sub-frame of uplink number and user's business demand.Suppose to have distributed 3 sub-frame of uplink, TTI is set to 1 and 3 sub-frame respectively, and then the size of tile can be chosen as 6*6.
As shown in Figure 9, when TTI was set to 1 sub-frame, distributed resource blocks DRU was made up of the tile of m discrete distribution, supposes that the m value is 3, and then the size of DRU is 3*6*6.
As shown in Figure 9, when TTI was set to 3 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 3, and then the size of DRU is 3*6*6.1 tile is arranged respectively on each subframe, and the tile on three sub-frame is in staggered distribution with certain frequency hopping mode.
The third situation: under the fixed-size situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is also fixed.Under above-mentioned situation, should be noted that the following aspects:
1, the DRU under the different TTI configuration is made up of the minimum unit tile of same type, and according to the configuration of system uplink number of sub-frames, the number of sub-frames that TTI comprised can be 1,2...m, and wherein m is the maximum number of sub-frame of uplink; Wherein, minimum unit tile is meant the least unit that constitutes a Resource Block.
2, various TTI configurations down; Constitute on tile discrete distribution each sub-frame in TTI of DRU; Tile number on each sub-frame can be identical or different; Wherein, above-mentioned discrete distribution is meant the discrete distribution of tile that constitutes a DRU on each subframe in the TTI, and the tile number that constitutes a DRU on each subframe can be different.
3, the tile number of the DRU under the formation different TTI disposes is identical, and for different TTI setting (that is, the interior number of subframes of TTI is different), the total tile number in its DRU is identical, and the interior tile number of each subframe disposes and difference according to different TTI.
4, the DRU size under the different TTI configuration is identical; Wherein, The size of DRU under different TTI is provided with (being sub-carrier number) is by the size decision of tile number that constitutes DRU and tile; Sub-carrier number in the DRU is the product of the sub-carrier number in tile number and the tile, and under the different TTI configuration, this product is identical.
5, the base station is that unit carries out the sub-channelizing process respectively to distributed resource according to corresponding one or more tile on each subframe, and the sub-channelizing process can be identical or different on each sub-frame.Constitute on tile each subframe in TTI of DRU, pairing physical sub-carrier position can be identical or different.That is to say; The tile that constitutes a DRU is distributed on each sub-frame in the TTI; The sub-channelizing process on each sub-frame is depended in the position of its tile on the different subframes, and the sub-channelizing process of each subframe can be identical or further staggers different with certain frequency-hopping mode because of different sub interframe.
Below in conjunction with accompanying drawing, the third situation is illustrated.
Big or small unanimity and the tile structure of distributed resource blocks DRU under the different TTI configuration are identical.The size of supposing the base unit tile of formation Resource Block is 6 number of sub-carrier * subframe internal symbol numbers, and for a conventional subframe, its symbolic number is 6, and then the size of tile is 6*6.
Shown in figure 10, when TTI was set to 1 sub-frame, distributed resource blocks DRU was made up of the tile of m discrete distribution, supposes that the m value is 3, and then the size of DRU is 3*6*6.
Shown in figure 10, when TTI was set to 2 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 3, and then the size of DRU is 3*6*6.The tile that 2 discrete distribution are arranged on one sub-frame has 1 tile on another subframe, and the tile on two sub-frame is in staggered distribution with certain frequency hopping mode.
Shown in figure 10, when TTI was set to 3 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 3, and then the size of DRU is 3*6*6.1 tile is arranged respectively on each subframe, and the tile on three sub-frame is in staggered distribution with certain frequency hopping mode.
Need to prove that when TTI was set to 4 sub-frame, the formation of a sub-frame cascade distributed resource blocks DRU was identical when being set to 3 sub-frame with TTI.
The 4th kind of situation: under the big or small unfixed situation of Resource Block DRU, the structure that constitutes the tile of said distributed resource units is not also fixed.Under above-mentioned situation, should be noted that the following aspects:
1, the DRU under the different TTI configuration is made up of the minimum unit tile of identical or different structure, is provided with down for different TTI, constitutes the corresponding different TTI setting of tile structure of DRU, and some TTI is provided with down can be identical, and some TTI is provided with down can be different.
2, various TTI configurations constitute on the even discrete distribution of tile each sub-frame in TTI of DRU down, and wherein, above-mentioned even discrete distribution is meant that the tile number that constitutes a DRU on each subframe in the TTI is identical, and discrete distribution.
3, the tile number of the DRU under the configuration of formation different TTI can be different, depend on the number of subframes in the TTI; That is to say that setting is that number of subframes is different in the TTI for different TTI, the total tile number in its DRU can be different, and the tile number in each subframe is that total tile number is divided by number of sub frames.
4, the DRU size under the different TTI configuration can be identical; That is to say that the size of the DRU under different TTI is provided with is by the size decision of the tile of tile number that constitutes DRU and respective type.Sub-carrier number in the DRU is the product of the sub-carrier number in tile number and the tile, and under the different TTI configuration, this product can be identical.
5, the base station is on each subframe; Is that unit carries out the sub-channelizing process respectively to distributed resource according to corresponding one or more tile; Each sub-frame sub-channelizing process can be identical or different; And, constituting on tile each subframe in TTI of DRU, pairing physical sub-carrier position can be identical or different.That is to say; Constitute on the even discrete distribution of tile each sub-frame in a TTI of a DRU; The sub-channelizing process on each sub-frame is depended in the position of its tile on the different subframes, can be identical or further stagger different with certain frequency-hopping mode because of different sub interframe.
Below in conjunction with accompanying drawing, the 4th kind of situation is illustrated.
Instance 7
Size and the tile structure of distributed resource blocks DRU under the different TTI configuration can be inequality.The size of supposing the base unit tile of formation Resource Block is 6 number of sub-carrier * subframe internal symbol numbers and 9 number of sub-carrier * subframe internal symbol numbers, and for a conventional subframe, its symbolic number is 6, and then the size of tile (structure) is 6*6 and 9*6.TTI is set to 1,2,3 and 4 sub-frame.
As shown in Figure 7, when TTI was set to 1 sub-frame, distributed resource blocks DRU was made up of the tile of m discrete distribution, supposes that the m value is 3, and tile is 6*6, and the size of DRU is 3*6*6.
As shown in Figure 7, when TTI was set to 2 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 2, and tile is 9*6, and then the size of DRU is 2*9*6.1 tile is arranged respectively on each subframe, and the tile on two sub-frame is in staggered distribution with certain frequency hopping mode.
As shown in Figure 7; When TTI was set to 3 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 3; Tile is 6*6; Then the size of DRU is 3*6*6, and 1 tile is arranged respectively on each subframe, and the tile on three sub-frame is in staggered distribution with certain frequency hopping mode.
Shown in Fig. 5 a; When TTI was set to 4 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 4; Tile is 6*6; Then the size of DRU is 4*6*6, and 1 tile is arranged respectively on each subframe, and the tile on four sub-frame is in staggered distribution with certain frequency hopping mode.
Shown in Fig. 5 b; When TTI was set to 4 sub-frame, a sub-frame cascade distributed resource blocks DRU was made up of the tile of m discrete distribution, supposed that the m value is 4; Tile is 9*6; Then the big or small 4*9*6 of DRU has a tile respectively on each subframe, and the tile of four sub-frame is in staggered distribution with certain frequency hopping mode.
Can find out through the above embodiments and instance; Through the variation to size with the structure of the minimum unit of the said distributed resource units of formation of different Transmission Time Intervals configuration distributed resource units down, the present invention can adapt to the dispatching requirement of different scenes flexibly.
Device embodiment
According to embodiments of the invention, a kind of distributor of resource units is provided, be used for pair of orthogonal Frequency Division Multiplexing system ascending wireless resource and on different Transmission Time Intervals, carry out the distribution of distributed resource unit.Figure 11 is the block diagram according to the distributor of the resource units of the embodiment of the invention.This device comprises first configuration module 110, second configuration module 112.Below, above-mentioned module is described.
First configuration module 110; Be used for dividing timing in that ascending wireless resource is carried out distributed resource units; Being configured to fixing another with one in the structure of the size of the distributed resource units under the different Transmission Time Interval configurations and the minimum unit that constitutes distributed resource units cannot not be configured to fixingly; Wherein, Transmission Time Interval is the time interval that transmission data block is shared, and the size of distributed resource units is the minimum unit number of formation distributed resource units and the product of minimum unit sub-carriers number;
Second configuration module 112; Be used for dividing timing in that ascending wireless resource is carried out distributed resource units, the structure of the size of different Transmission Time Intervals configurations distributed resource units down and the minimum unit of formation distributed resource units all is configured to fix or both all cannot not be configured to fixingly.
Need to prove that above-mentioned two modules can be unified setting, and, four kinds of above-mentioned collocation methods use of can arranging in pairs or groups arbitrarily.
In the ascending resource of ofdm system distributed, the distributor of the resource units in the base station was according to the system uplink sub-frame configuration, the requirement of user QoS; And user's channel condition, for the user is provided with different Transmission Time Interval TTI, in IEEE802.16m; A frame is made up of 8 sub-frame, and sub-frame of uplink generally can dispose 1～4 sub-frame, and the number of sub frames that TTI comprised can be thought 1～4; Carry out TTI according to user's dispatching requirement and be provided with, different TTI setting can coexist, for example; The certain user's of current scheduling TTI is 1, and certain user's TTI is 2,3 or 4.
On each subframe, the distributor of the resource units in the base station is in distributed resource, and according to the basic tile that constitutes distributed resource blocks, for example, 6 OFDM symbols of 6 number of sub-carrier * carry out tile level subcarrier and reset, and accomplish the sub-channelizing process.Sub-channelizing process on each sub-frame in the TTI can be identical, can further carry out frequency hopping with certain pattern on each subframe.
The demand that the distributor of the resource units in the base station is provided with different TTI according to business is carried out single sub-frame scheduling and the scheduling of many subframes cascade respectively to the user.For the scheduling of many subframes cascade, different TTI is provided with, and adopting different subframe cascade distributed resource blocks structures is its Resources allocation.Various subframe cascade distributed resource blocks are made up of several minimum units tile respectively, i.e. m*tile, and the tile number that is distributed on each subframe is (m/n), and wherein n is the number of sub-frames that TTI comprises, and the value of n depends on the number of sub-frame of uplink.The value of m can be 2,3 or 4.
In sum; By means of technical scheme of the present invention; Through variation to size with the structure of the minimum unit of the said distributed resource units of formation of different Transmission Time Intervals configuration distributed resource units down; The dispatching requirement that can adapt to different scenes flexibly, can reduce design complexity, kept the unification of design, fully efficiently utilized the resource of system, effectively guaranteed the covering of system and improved the performance of system.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the distribution method of a resource units is used for pair of orthogonal Frequency Division Multiplexing system ascending wireless resource and on different Transmission Time Intervals, carries out the distribution of distributed resource unit, it is characterized in that said method comprises:
Divide timing in that said ascending wireless resource is carried out distributed resource units, the size and the structure of the minimum unit that constitutes said distributed resource units of different Transmission Time Intervals configurations distributed resource units are down carried out following configuration one of at least: one of them is configured to fix another cannot be configured to fixingly; Both all are configured to fix; Both all cannot be configured to fixingly; Wherein, Said Transmission Time Interval is the time interval that transmission data block is shared, and the size of said distributed resource units is the minimum unit number of the said distributed resource units of formation and the product of said minimum unit sub-carriers number.
2. method according to claim 1; It is characterized in that; Under the big or small unfixed situation of said distributed resource units; Distributed resource units under the said different Transmission Time Interval configuration is made up of the identical minimum unit of structure, and said minimum unit is distributed in each sub-frame of Transmission Time Interval uniformly, and is discrete distribution in each sub-frame.
3. method according to claim 1; It is characterized in that; Under the unfixed situation of the structure of the minimum unit that only constitutes said distributed resource units, the size of the distributed resource units under the said different Transmission Time Interval configurations is fixed, and is made up of structure minimum unit inequality; And said minimum unit is distributed in respectively in the subframe of Transmission Time Interval.
4. method according to claim 1; It is characterized in that; In the size of said distributed resource units and constitute under all fixing situation of the structure of minimum unit of said distributed resource units; Said different Transmission Time Interval configuration distributed resource units down is made up of the identical minimum unit of structure, and in each sub-frame that is distributed in Transmission Time Interval of dispersing of said minimum unit, the minimum unit number in each sub-frame is identical.
5. method according to claim 1; It is characterized in that; In the size of said distributed resource units and constitute under all fixing situation of the structure of minimum unit of said distributed resource units; Said different Transmission Time Interval configuration distributed resource units down is made up of the identical minimum unit of structure, and in each sub-frame that is distributed in Transmission Time Interval of dispersing of said minimum unit, the minimum unit number in each sub-frame is inequality.
6. method according to claim 1; It is characterized in that; In the size of said distributed resource units and constitute under all unfixed situation of structure of minimum unit of said distributed resource units; Distributed resource units under the said different Transmission Time Interval configuration is made up of structure minimum unit inequality, and in uniformly discrete each sub-frame that is distributed in Transmission Time Interval of said minimum unit, the minimum unit number in each sub-frame is identical.
7. method according to claim 1; It is characterized in that; In the structure of the size of said distributed resource units and the minimum unit that constitutes said distributed resource units one is fixing, or in the size of said distributed resource units and constitute under all unfixed situation of structure of minimum unit of said distributed resource units; Under the configuration of different Transmission Time Intervals, the minimum unit number that constitutes said distributed resource units depends on the number of sub frames in the said different Transmission Time Interval.
8. method according to claim 1; It is characterized in that; In the size of said distributed resource units and constitute under all fixing situation of the structure of minimum unit of said distributed resource units; Under the configuration of different Transmission Time Intervals, the minimum unit number that constitutes said distributed resource units is identical.
9. method according to claim 1; It is characterized in that; The size of or said distributed resource units fixing and constituting under all fixing situation of the structure of minimum unit of said distributed resource units in the size of said distributed resource units; The base station is that unit carries out the sub-channelizing process to said distributed resource units with the minimum unit of unifying structure on the subframe of said different Transmission Time Intervals, and the sub-channelizing process on the different subframes is identical.
10. method according to claim 1; It is characterized in that; The size of or said distributed resource units fixing and constituting under all fixing situation of the structure of minimum unit of said distributed resource units in the size of said distributed resource units; The base station is that unit carries out the sub-channelizing process to said distributed resource units with the minimum unit of unifying structure on the subframe of said different Transmission Time Intervals, and the sub-channelizing process on the different subframes is inequality.
11. method according to claim 1; It is characterized in that; Fixing in the structure of the minimum unit that only constitutes said distributed resource units, or in the size of said distributed resource units and constitute under all unfixed situation of structure of minimum unit of said distributed resource units; The base station is that unit respectively carry out sub-channelizing process with said minimum unit according to the structure of the minimum unit of said distributed resource units on the subframe of said different Transmission Time Intervals, and the sub-channelizing process on the subframe of different minimum units place is identical.
12. method according to claim 1; It is characterized in that; Fixing in the structure of the minimum unit that only constitutes said distributed resource units, or in the size of said distributed resource units and constitute under all unfixed situation of structure of minimum unit of said distributed resource units; The base station is that unit respectively carry out sub-channelizing process with said minimum unit according to the structure of the minimum unit of said distributed resource units on the subframe of said different Transmission Time Intervals, and the sub-channelizing process on the subframe of different minimum units place is inequality.
13. the distributor of a resource units is used for pair of orthogonal Frequency Division Multiplexing system ascending wireless resource and on different Transmission Time Intervals, carries out the distribution of distributed resource unit, it is characterized in that said device is used for:
Divide timing in that said ascending wireless resource is carried out distributed resource units, the size and the structure of the minimum unit that constitutes said distributed resource units of different Transmission Time Intervals configurations distributed resource units are down carried out following configuration one of at least: one of them is configured to fix another cannot be configured to fixingly; Both all are configured to fix; General or both all cannot not be configured to fixingly; Wherein, Said Transmission Time Interval is the time interval that transmission data block is shared, and the size of said distributed resource units is the minimum unit number of the said distributed resource units of formation and the product of said minimum unit sub-carriers number.
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| CN106357579B (en) * | 2015-07-17 | 2020-02-18 | 中兴通讯股份有限公司 | Method for using frequency spectrum resource of orthogonal frequency division multiplexing system and corresponding base station |
| CN108347319B (en) * | 2017-01-24 | 2020-10-20 | 普天信息技术有限公司 | Resource allocation method and device |
| CN114301750B (en) * | 2017-03-24 | 2024-04-09 | 华为技术有限公司 | Time information determining method, network node and terminal equipment |
| CN112187422B (en) * | 2019-07-02 | 2023-08-11 | 北京中兴高达通信技术有限公司 | Logic resource transmission method and system |
| CN115623599A (en) * | 2021-07-16 | 2023-01-17 | 华为技术有限公司 | Method and apparatus for transmitting physical layer protocol data unit |
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| CN2891494Y (en) * | 2004-06-10 | 2007-04-18 | 美商内数位科技公司 | Dynamic H-ARQ program allocating device |
| CN1973459A (en) * | 2004-06-25 | 2007-05-30 | Lg电子株式会社 | Allocation of radio resource in orthogonal frequency division multiplexing system |
| WO2008084695A1 (en) * | 2007-01-09 | 2008-07-17 | Ntt Docomo, Inc. | User device, base station apparatus, and method |
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| CN2891494Y (en) * | 2004-06-10 | 2007-04-18 | 美商内数位科技公司 | Dynamic H-ARQ program allocating device |
| CN1973459A (en) * | 2004-06-25 | 2007-05-30 | Lg电子株式会社 | Allocation of radio resource in orthogonal frequency division multiplexing system |
| WO2008084695A1 (en) * | 2007-01-09 | 2008-07-17 | Ntt Docomo, Inc. | User device, base station apparatus, and method |
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