CN101621846B - Frequency spectrum resource classification and division method - Google Patents
Frequency spectrum resource classification and division method Download PDFInfo
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Abstract
The invention discloses a frequency spectrum resource classification and classifying method. In the frequency spectrum resource classifying method, a subcarrier is rearranged in resource cluster, and a physical resource block is renumbered; wherein one resource cluster comprises at least one physical resource block; the physical resource block after rearrangement is divided into a plurality of frequency complex resource groups in physical resource block or resource cluster; in each frequency complex resource group, a centralized resource block for centralized resource and a distributed resource block for distributed resource are divided in physical resource block; and in each frequency complex resource group, the centralized resource block is mapped onto the physical resource block for centralized resource, and the distributed resource block is mapped onto the physical resource block for distributed resource. By the invention, resource allocation efficiency and performance can be improved.
Description
Technical field
The present invention relates to the communications field, particularly, relate to frequency spectrum resource classification and division methods.
Background technology
Along with the evolution and the development of Communication Technique of network, broadband wireless communication technique is being a target with the power system capacity that bigger bandwidth is provided, supports higher data rate and spectrum efficiency, acquisition is bigger just.
OFDM (Orthogonal Frequency Division Multiplexing; Abbreviating OFDM as) technology allows each sub-channel spectra to overlap each other; To improve spectrum efficiency; And, thereby can overcome the intrinsic frequency-selective channel decline of broadband system to improve systematic function because the notion of subchannel has become broadband system into the system of narrow band signal.
For multiple access technology; Current mainstream technology adopts OFDM (OrthogonalFrequency Division Multiple Access; Abbreviate OFDMA as), promptly a plurality of users share full range band frequency spectrum resource on a symbol, to obtain multi-user diversity gain.On the other hand, this also has negative effect, that is, the distribution of resource indication expense and efficient are to the influence of broadband system.In up (terminal to base station) and descending (base station is to the terminal) transmission, the design of resource allocation unit all has same requirement to flexibility, signaling consumption, the resource utilization of scheduling, yet for up resource allocation unit, also needs some special considerations.For example, at the terminal of cell edge, power limited often, and the system requirements of IEEE802.16m have clearly proposed the requirement that covers than frame of reference (IEEE802.16e) raising system.How to design a kind of resource allocation unit to guarantee scheduling flexibly, moderate signaling consumption, to improve up covering that fully utilizing system resource efficiently is a problem that presses for solution.
The design of present frame structure has confirmed that the elementary cell of scheduling is a sub-frame, i.e. 6 OFDM symbols.The ascending resource allocation units that propose at present, its size is mainly with (sub-carrier number * symbolic number) expression: 18 * 6,16 * 6,2 * 6, also have to propose 24 * 3.The mapping mode of logical resource unit and physical sub-carrier then has centralized subcarrier mapping and distributed sub-carrier mapping dual mode; And dual mode carries out multiplexing with the mode of frequency division multiplexing (Frequency Division Multiple Access abbreviates FDM as) in a sub-frame.The Resource Block of centralized subcarrier mapping mode can provide the frequency selectivity gain; Being fit to terminal little to multidiameter delay, that channel variation is slow, channel condition is good dispatches; Distributed sub-carrier mapping then can provide frequency diversity gain, is fit to, high-speed mobile little to multidiameter delay, the relatively poor terminal of channel condition is dispatched.For the Resource Block of centralized subcarrier mapping mode, generally adopt 18 * 6 resource block size, and 18 number of sub-carrier in Resource Block are continuous.For the Resource Block of distributed sub-carrier mapping mode, the resource block size of proposition mainly contains 18 * 6, and 16 * 6,12 * 6 etc.And the interior subcarrier of distributed resource blocks is made up of several continuous sub-carriers groups.The dispersion degree of subcarrier is high more, and the effect of its frequency diversity is obvious more, but its effectiveness affects to pilot design is bigger.Therefore select suitable subcarrier dispersion degree most important to the design of ascending resource allocation units.
Up covering problem also is the problem that when carrying out the resource allocation unit design, needs emphasis to consider.In IEEE802.16e, the principle of ascending resource mapping is the time domain priority principle, and purpose is in order to promote ascending power, to guarantee covering and edge cell user's throughput.And when the design of the ascending resource allocation units of 16m, because its subframe structure, and the base unit of scheduling of resource is a sub-frame, to a certain degree can limit up covering, therefore in the resource allocation unit design of 16m, needs to consider this factor.At present indivedual companies have proposed the solution for this problem, and a kind of viewpoint wherein is with the subframe expansion, promptly; Consideration is expanded two sub-frame, the size of a basic resource blocks is expanded on next subframe, thereby can be reached the purpose of power ascension; Alleviate covering problem; Yet the Resource Block of expansion is different with the pilot design of basic resource blocks, and this has brought certain complexity to system, and also inhibition is also disturbed in inconvenience.A kind of in addition viewpoint is the sub-piece (tile) that one 18 * 6 Resource Block is divided into two 18 * 3; 18 number of sub-carrier in every sub-block are continuous; But 18 continuous subcarriers of 18 continuous subcarriers of first three symbol and back three symbols adopt the pattern of frequency hopping that certain branch collection effect is provided; This method can be alleviated the covering problem of edge customer to a certain extent, but the power ascension effect that this method does not utilize energy on symbol, to accumulate.
Can find out from above-mentioned analysis; Up covering problem is the key factor that ascending resource allocation units design demand is considered; How with frequency diversity, power ascension etc. organically combine to improve the performance and the efficient of resource allocation, must take in and improve.
Summary of the invention
Consider resource allocation performance and the not high problem of efficient in the resource allocation design that exists in the correlation technique and propose the present invention, for this reason, the present invention aims to provide a kind of frequency spectrum resource division methods and frequency spectrum resource division methods, in order to address the above problem.
According to an aspect of the present invention, a kind of frequency spectrum resource division methods is provided.
In frequency spectrum resource division methods according to the present invention; The frequency spectrum resource of system is classified according to channel condition; Sorted frequency spectrum resource comprises: adopt the first kind resource of centralized resources block structure, in the centralized resources block structure, subcarrier is continuous physically in the Resource Block; Adopt second type of resource of distributed resource block structure, in the distributed resource block structure, subcarrier is discontinuous physically in the Resource Block, and discrete according to certain particle; Adopt the 3rd type of resource of distributed subframe cascade resource block structures.
Preferably, for first kind resource, the subcarrier in logical resource block is continuous physically; For second type of resource and the 3rd type of resource, the subcarrier in logical resource block is discrete by certain particle size physically, and wherein, logical resource block is the base unit of scheduling.
Preferably, in the distributed resource block structure, Resource Block is made up of the experimental process piece.
Preferably, sub-piece comprises: structure is the category-A piece of N* (T/2); Structure is category-B piece and the sub-piece of C class of (N/k) * T, and wherein, N and N/k are the continuous sub-carriers number, and T is the symbol lengths of a frame, and the k value is respectively 2 and 3.
Preferably, in distributed subframe cascade resource block structures, Resource Block is across the symbol lengths of k sub-frame, and a sub-block is arranged on each subframe, its structure respectively with the distributed resource block structure in category-B piece and the sub-piece of C class consistent.
Preferably, in the 3rd type of resource, the subcarrier of each sub-frame of cascade adopts different frequency-hopping modes.
According to a further aspect in the invention, a kind of frequency spectrum resource division methods is provided.
Frequency spectrum resource division methods according to the present invention comprises: with a resource bunch is that subcarrier is reset by unit, and Physical Resource Block is renumberd, and wherein, resource bunch comprises at least one Physical Resource Block; Bunch is unit with the Physical Resource Block after resetting with a Physical Resource Block or resource, is divided into a plurality of channeling resource groups; In each channeling resource group, be that unit marks off localized resource blocks that is used for centralized resources and the distributed resource blocks that is used for distributed resource with the Physical Resource Block; In each channeling resource group, localized resource blocks is mapped to the Physical Resource Block that is used for centralized resources, distributed resource blocks is mapped to the Physical Resource Block that is used for distributed resource.
Preferably, distributed resource blocks is mapped on the Physical Resource Block that is used for distributed resource is specially: distributed resource blocks is divided; Distributed resource blocks to after dividing is shone upon.
Preferably; Distributed resource blocks divided specifically comprise: in each channeling resource group, be that subcarrier is reset by unit with distributed resource with category-A piece, and Physical Resource Block is renumberd; Wherein, Category-A piece is meant that structure is the sub-piece of N* (T/2), and N is the continuous sub-carriers number, and T is the symbol lengths of a frame; In each channeling resource group; Mark off category-A distributed resource, category-B distributed resource, three types of distributed resources of C class distributed resource; Three types of distributed resources comprise following three types sub-piece respectively: category-A piece; Structure is category-B piece and the sub-piece of C class of (N/k) * T, and wherein, the k value is respectively 2 and 3; In each channeling resource group, be that subcarrier is reset by unit further with the category-B distributed resource, and Physical Resource Block is renumberd with category-B piece; Category-B distributed resource after resetting is marked off DRU-2 type distributed resource and the distributed subframe cascade of DRU-4 type resource according to demand; In each channeling resource group, be that subcarrier is reset by unit further with C class distributed resource, and Physical Resource Block is renumberd with the sub-piece of C class; C class distributed resource after resetting is marked off DRU-3 type distributed resource and the distributed subframe cascade of DRU-5 type resource according to demand.
Preferably, the distributed resource blocks after dividing is shone upon specifically comprise: in each channeling resource group, DRU-1 type distributed resource blocks is mapped on the category-A distributed resource through frequency-hopping mode; DRU-2 type distributed resource blocks is mapped directly on the DRU-2 type distributed resource, be mapped to the distributed subframe cascade of DRU-4 type Resource Block on the distributed subframe cascade of the DRU-4 type resource of striding two sub-frame through frequency-hopping mode; DRU-3 type distributed resource blocks is mapped directly on the DRU-3 type distributed resource, be mapped to the distributed subframe cascade of DRU-5 type Resource Block on the distributed subframe cascade of the DRU-5 type resource of striding three sub-frame through frequency-hopping mode; Wherein, the distributed resource blocks of DRU-1 type distributed resource blocks for constituting by category-A piece; DRU-2 type distributed resource blocks, DRU-3 type distributed resource blocks are respectively the distributed resource blocks that is made up of the sub-piece of category-B piece/C class; The distributed subframe cascade of DRU-4 type Resource Block is the distributed subframe cascade Resource Block that is made up of category-B piece of striding two sub-frame symbols; The distributed subframe cascade of DRU-5 type Resource Block is the distributed subframe cascade Resource Block that is made up of the sub-piece of C class of striding three sub-frame symbols.
Through above-mentioned at least one technical scheme of the present invention; Through carry out the classification/division of scheduling of resource according to channel condition; Solved the resource allocation performance and the not high problem of efficient that exist in the correlation technique,, can improve the performance and the efficient of resource allocation than prior art.
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 localized resource blocks structural representation according to the embodiment of the invention;
Fig. 2 is tile A, the B according to the embodiment of the invention, the structural representation of C;
Fig. 3 is the structural representation according to the distributed resource blocks of the embodiment of the invention;
Fig. 4 is the structural representation of the distributed subframe cascade of the DRU-4 of embodiment of the invention Resource Block;
Fig. 5 is the structural representation of the distributed subframe cascade of the DRU-5 of embodiment of the invention Resource Block;
Fig. 6 is the flow chart according to the frequency spectrum resource division methods of the embodiment of the invention;
Fig. 7 is the detailed process flow chart according to the frequency spectrum resource division methods of the embodiment of the invention;
Fig. 8 is according to the resource division of the embodiment of the invention and sub-channelizing sketch map;
Fig. 9 is the sketch map according to the Resource Block of the embodiment of the invention and physical sub-carrier mapping relations;
Figure 10 is according to the distributed subframe cascade Resource Block of the embodiment of the invention and physical sub-carrier mapping relations sketch map.
Embodiment
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.
According to the embodiment of the invention, a kind of frequency spectrum resource sorting technique at first is provided, in the method, the user of different channels condition is designed the structure of dissimilar wireless resource schedulings unit respectively.
Particularly, in embodiments of the present invention, frequency spectrum resource is divided into: be used to obtain the first kind resource of frequency selectivity characteristic, the 3rd type of resource that is used to obtain second type of resource of frequency diversity characteristic and is used to obtain frequency diversity and power ascension.
Below describe above-mentioned all kinds of resources in detail.
First kind resource:
Be used to obtain the resource of frequency selectivity characteristic, be meant that the subcarrier in the logical resource block (LRU) of resource type is continuous physically, wherein, a logical resource block is meant the base unit of scheduling.For the centralized resources block structure of such resource, be meant that subcarrier is continuous physically in the Resource Block, its structure is N
Subcarrier* T
Symbol, as shown in Figure 1, N wherein
SubcarrierBe the continuous sub-carriers number, value can be 18, T
SymbolBe the symbol lengths of a sub-frame, value is 6.
Second type of resource:
Be used to obtain the resource of frequency diversity characteristic, refer to that the subcarrier in the logical resource block of resource type is discrete by certain particle size physically.So-called distributed resource block structure is meant that subcarrier is discontinuous physically in the Resource Block, and discrete according to certain particle; Be made up of experimental process piece (tile), its tile has three types, is respectively tile A, tile B, tile C; Wherein, tile A structure is N
Subcarrier* (T
Symbol/ 2), tile B and tile C-structure are (N
Subcarrier/ k) * T
Symbol, the k value is respectively 2 and 3, and is as shown in Figure 2, and tile A is 18 * 3, and tile B is 9 * 6, tile C is 6 * 6; Subcarrier is continuous physically in the tile, and the tile that constitutes distributed resource blocks is discontinuous physically, and the discrete granularity of tile A, B, C reduces successively.As shown in Figure 3, the distributed resource blocks that is made up of tile A is designated as DRU-1, is that unit carries out frequency hopping under the fast channel condition that becomes, to obtain regular hour and frequency diversity gain with half subframe; By tile B, the distributed resource blocks that tile C constitutes respectively is designated as DRU-2, DRU-3 respectively.
The 3rd type of resource
With second type seemingly resources-type, be used to obtain the resource of branch collection and power ascension, refer to that the subcarrier in the logical resource block of resource type is discrete by certain particle size physically.For distributed subframe cascade resource block structures, be meant that subcarrier physically is discontinuous in the Resource Block, and discrete according to certain particle, and across the symbol lengths of k sub-frame.Each distributed subframe cascade Resource Block is made up of k tile B or tile C, and a tile is arranged on each subframe, the structure of its tile respectively with the distributed resource block structure in tile B and tile C consistent; As shown in Figure 4, when k was 2, distributed subframe cascade Resource Block was made up of tile B, is designated as DRU-4; As shown in Figure 5, when k was 3, distributed subframe cascade Resource Block was made up of tile C, and the distributed resource blocks that tile C constitutes is designated as DRU-5 respectively.
Need to prove that in addition the subcarrier of each sub-frame of cascade can adopt different frequency-hopping modes, promptly; In distributed subframe cascade resource, each subframe adopts different frequency-hopping modes, correspondingly; Constitute in the distributed subframe cascade Resource Block N between its each sub-frame thus
Subcarrier/ k number of sub-carrier is discrete according to frequency-hopping mode.
Can find out through above description; In embodiments of the present invention, through the user of different channels condition being designed the structure of dissimilar wireless resource schedulings unit respectively, can make full use of channel condition; Obtain frequency selectivity gain, frequency diversity gain and power ascension effect; Satisfy various users' performance requirement, utilize resource fully efficiently, improve system spectral efficiency.
Based on foregoing, the present invention can further carry out sub-channelizing process and divide resource, in this process, at first preferentially marks off centralized resources, in surplus resources, goes out corresponding distributed resource according to the discrete granularity division of distributed difference again.This embodiment that provides below can combining understands.
According to the embodiment of the invention, a kind of frequency spectrum resource division methods is provided, this method is preferably used above-mentioned frequency spectrum resource sorting technique.Fig. 6 has provided the implementation procedure of this method, and is as shown in Figure 6, comprises following processing:
Step S602, system are that unit resets subcarrier and Physical Resource Block is renumberd with a resource bunch (cluster), wherein; Resource bunch is meant M Physical Resource Block (PRU), and wherein, M is the integer more than or equal to 1; Depend on system bandwidth, the size of Physical Resource Block is N
SubcarrierIndividual continuous sub-carriers * T
SymbolIndividual symbol;
Step S604 is that unit is divided into some channelings (FFR) resource group with the Physical Resource Block after resetting with PRU or cluster;
Step S606 in each FFR group, according to the demand of centralized resources and distributed resource, is that unit marks off and is used for centralized and Physical Resource Block distributed resource with PRU;
Step S608, in each FFR group, (LLRU) maps directly to the Physical Resource Block that is used for centralized resources with localized resource blocks, and distributed resource blocks is mapped to the Physical Resource Block that is used for distributed resource through rearrangement with after numbering processing.
Particularly, specifically can comprise following two parts processing on the Physical Resource Block that is used for distributed resource, that is, distributed resource blocks divided being mapped to after rearrangement of distributed resource blocks process and the numbering processing; And the distributed resource blocks after dividing shone upon.
Particularly; Distributed resource blocks divided comprise following processing: (one) is that subcarrier is reset by unit with distributed resource with category-A piece, and Physical Resource Block is renumberd in each channeling resource group; Wherein, Category-A piece is meant that structure is the sub-piece of N* (T/2), and N is the continuous sub-carriers number, and T is the symbol lengths of a frame; (2) in each channeling resource group; Mark off category-A distributed resource, category-B distributed resource, three types of distributed resources of C class distributed resource; Three types of distributed resources comprise following three types sub-piece respectively: category-A piece; Structure is category-B piece and the sub-piece of C class of (N/k) * T, and wherein, the k value is respectively 2 and 3; (3) in each channeling resource group, be that subcarrier is reset by unit further with the category-B distributed resource, and Physical Resource Block is renumberd with category-B piece; Category-B distributed resource after resetting is marked off DRU-2 type distributed resource and the distributed subframe cascade of DRU-4 type resource according to demand; (4) in each channeling resource group, be that subcarrier is reset by unit further with C class distributed resource, and Physical Resource Block is renumberd with the sub-piece of C class; C class distributed resource after resetting is marked off DRU-3 type distributed resource and the distributed subframe cascade of DRU-5 type resource according to demand.
Distributed resource blocks after dividing shone upon specifically comprise following processing: (one) is mapped to DRU-1 type distributed resource blocks on the category-A distributed resource through frequency-hopping mode in each channeling resource group; (2) DRU-2 type distributed resource blocks is mapped directly on the DRU-type distribution formula resource, be mapped to the distributed subframe cascade of DRU-4 type Resource Block on the distributed subframe cascade of the DRU-4 type resource of striding two sub-frame through frequency-hopping mode; (3) DRU-3 type distributed resource blocks is mapped directly on the DRU-3 type distributed resource, the distributed subframe cascade of DRU-5 type Resource Block is mapped on the distributed subframe cascade of the DRU-5 type resource of striding three sub-frame through frequency-hopping mode.
Wherein, above-mentioned DRU-1 type distributed resource blocks is the distributed resource blocks that is made up of category-A piece; DRU-2 type distributed resource blocks, DRU-3 type distributed resource blocks are respectively the distributed resource blocks that is made up of the sub-piece of category-B piece/C class; The distributed subframe cascade of DRU-4 Resource Block is the distributed resource blocks that is made up of category-B piece of striding two sub-frame symbols; The distributed subframe cascade of DRU-5 type Resource Block is the distributed subframe cascade Resource Block that is made up of the sub-piece of C class of striding three sub-frame symbols.
Need to prove that the present invention is for the not restriction of execution sequence of above-mentioned processing.Can be provided with according to the needs of implementing, of mapping process that Fig. 7 shows distributed resource blocks realizes instance, and step 1-4 among Fig. 7 and above-mentioned step S602 to S608 are similar, no longer are repeated in this description at this.As shown in Figure 7, comprise following processing:
Step 6, in each FFR group, according to tile A, B, the distributed resource demand of C type marks off the distributed resource of respective type;
Step 7 in each FFR group, is mapped to DRU-1 type distribution formula Resource Block on the distributed resource of tile category-A type through frequency-hopping mode;
Step 8 in each FFR group, is that unit resets subcarrier and PRU is renumberd with tile category-B type distributed resource with tile B;
Step 9, in each FFR group, the tile category-B type distributed resource after system will reset marks off DRU-2 and DRU-4 type distribution formula resource according to demand;
Step 10 maps directly to DRU-2 type distribution formula Resource Block on the distributed resource of DRU-2 type, is mapped to the distributed subframe cascade Resource Block of DRU-4 type on the distributed resource of DRU-4 type on two sub-frame through frequency-hopping mode;
Step 11 in each FFR group, is that subcarrier is reset by unit with C class distributed resource with the sub-piece of C class, and Physical Resource Block is renumberd; Tile C type distribution formula resource after system will reset marks off DRU-3 and DRU-5 type distribution formula resource according to demand;
Step 12 maps directly to DRU-3 type distribution formula Resource Block on the distributed resource of DRU-3 type, and the distributed subframe cascade Resource Block of DRU-5 type is mapped on the distributed resource of DRU-5 type on three sub-frame through frequency-hopping mode.
Wherein, Fig. 8 shows above-mentioned resource dividing method, promptly; The sketch map of resource division and sub-channelizing process, as shown in Figure 8, at first; With resource bunch is that unit is reset, afterwards, and with several FFR groups (FFR1, FFR2, FFR3) that bunch are divided into after resetting; In each FFR group, be that unit is divided into LLRU and DRU resource group with PRU with resource, in DRU organizes, be that unit is reset with PRU; Among the PRU after rearrangement, mark off tile A, B, C type resource (tile A group, tile B group, tile C group) according to demand; Afterwards, tile Type B resource is reset according to tile B and is divided into DRU-2,4 type resources (DRU-2 group, DRU-4 group), tile C type resource is reset according to tile C and is divided into DRU-3,5 type resources (DRU-3 group, DRU-5 group).
Fig. 9 has provided the position relation of three kinds of distributed resource blocks (DRU-1 type, DRU-2 type, DRU-3 type) with the physical sub-carrier mapping successively; Figure 10 has provided the position relation of distributed subframe cascade Resource Block and physical sub-carrier mapping; Wherein, The piece of identical lines constitutes a Resource Block, and as can be seen from the figure, DRU-2 type Resource Block and DRU-3 type resource block mapping are to discrete subcarrier.
By means of above technical scheme; Through the user of different channels condition being designed the structure of dissimilar wireless resource schedulings unit respectively; Especially the user who is in cell edge is carried out special Resource Unit structural design; And every type of Resource Unit carried out physical mappings respectively, can guarantee the reasonability that various Resource Units are multiplexing, and reduce implementation complexity.
Can understand the present invention better through following embodiment.In the following embodiment that provides; The base station according to the characteristic of channel resource is divided into have frequency selectivity, frequency diversity characteristic and have frequency diversity and several types of resources of power ascension characteristic; For adopting the corresponding resource blocks structure, all kinds of resources dispatch, simultaneously, and every kind of resource frequency division multiplexing (FDM) on one or more subframes; The base station is divided according to all kinds of resource requirements and is carried out sub-channelizing and handle, thereby produces the Resource Block of all kinds of resources.
Embodiment one
Current system sub-frame configuration is: uply disposed plural continuous subframes.The scheduler decision distributes localized resource blocks for the sub-district good user of local channel condition; Be a part of user's assignment profile formula Resource Block simultaneously, and dispatch for cell edge part power limited users assignment profile formula frame cascade Resource Block carries out two sub-frame cascades.
Suppose to have in the sub-frame 30 Physical Resource Block (PRU), the size of each PRU is 6 OFDM symbols of 18 number of sub-carrier *.
Step 4, centralized resources PRU1～8 after the base station will be reset are mapped as LLRU one by one, optionally distribute to UE1～UE3 according to user's channel condition;
Step 6; Current 4 users (UE4～UE7) need distribute 7 DRU-1 type distributed resource blocks; 5 user (UE8～UE12) need distribute 11 DRU-2 type distributed resource blocks; (UE13～UE15) needs distribute 4 the distributed subframe cascade of DRU-4 type Resource Block to 3 users, and then the base station further is divided into corresponding tile A, Type B resource according to the demand with distributed resource;
Step 7,7 DRU-1 type distribution formula Resource Block that user UE4～UE7 distributes are mapped on the distributed resource of tile category-A type through frequency-hopping mode;
Step 8 is that granularity is reset with the subcarrier in the tile Type B resource with the sub-carrier number (i.e. the sub-carrier number of 1/2 PRU) of tile B, and PRU is renumberd;
Step 9, the base station further is divided into corresponding D RU-2,4 type resources according to above-mentioned DRU-2,4 type resource requirements with tile Type B resource;
Step 10; 11 DRU-2 type distribution formula Resource Block that user UE8～UE12 distributes map directly on the distributed resource of DRU-2 type, and the distributed subframe cascade Resource Block of 4 DRU-4 types that user UE13～UE15 distributes is mapped on the distributed resource of DRU-4 type on two sub-frame through frequency-hopping mode;
Resource allocation on the FFR group 1 finishes.The resource allocation of other FFR group is identical with group 1.
Embodiment two
Current system sub-frame configuration is: uply disposed three continuous subframes.The scheduler decision distributes localized resource blocks for the sub-district good user of local channel condition; Be a part of user's assignment profile formula Resource Block simultaneously, and dispatch for cell edge part power limited users assignment profile formula frame cascade Resource Block carries out three sub-frame cascades.
Suppose to have in the sub-frame 30 Physical Resource Block (PRU), each PRU size is 6 OFDM symbols of 18 number of sub-carrier *.
In this embodiment, step 1,2,3,4,5 identical with embodiment one;
Step 6; Current 4 users (UE4～UE7) need distribute 7 DRU-1 type distributed resource blocks; 5 user (UE8～UE12) need distribute 11 DRU-3 type distributed resource blocks; (UE13～UE15) needs distribute 4 the distributed subframe cascade of DRU-5 type Resource Block to 3 users, and then the base station further is divided into corresponding tile A, C type resource according to the demand with distributed resource;
Step 7,7 DRU-1 type distribution formula Resource Block that user UE4～UE7 distributes are mapped on the distributed resource of tile category-A type through frequency-hopping mode;
Step 8 is that granularity is reset with tile C type resource sub-carriers with the sub-carrier number (i.e. the sub-carrier number of 1/3 PRU) of tile C, and PRU is renumberd;
Step 9, base station further are divided into corresponding D RU-3,5 type resources according to above-mentioned DRU-3,5 type resource requirements with tile C type resource;
Step 10; 11 DRU-3 type distribution formula Resource Block that user UE8～UE12 distributes map directly on the distributed resource of DRU-3 type, and the distributed subframe cascade Resource Block of 4 DRU-5 types that user UE13～UE15 distributes is mapped on the distributed resource of DRU-5 type on three sub-frame through frequency-hopping mode;
Resource allocation finishes.
Embodiment three:
Current system sub-frame configuration is: uply disposed a continuous subframes.The scheduler decision distributes localized resource blocks for the sub-district good user of local channel condition, is remainder user assignment profile formula Resource Block simultaneously.
Suppose to have in the sub-frame 30 Physical Resource Block (PRU), each PRU size is 6 OFDM symbols of 18 number of sub-carrier *.
In this embodiment, step 1,2,3,4,5 identical with embodiment one;
Step 6; Current 4 users (UE4～UE7) need distribute 7 DRU-1 type distributed resource blocks; (UE8～UE12) needs distribute 22 DRU-2 or 3 type distributed resource blocks to 5 users, and then the base station further is divided into corresponding tile A and B/C type resource according to the demand with distributed resource;
Step 7,7 DRU-1 type distribution formula Resource Block that user UE4～UE7 distributes are mapped on the distributed resource of tile category-A type through frequency-hopping mode;
Step 8 is that granularity is reset with the subcarrier in the tile B/C type resource with the sub-carrier number of tile B/C, and PRU is renumberd;
Step 9,22 DRU-2 or 3 type distribution formula Resource Block that user UE8～UE12 distributes map directly on the distributed resource of tileB/C type;
Resource allocation finishes.
To sum up, by means of the present invention, can make full use of channel condition; Obtain frequency selectivity gain, frequency diversity gain and power ascension effect; Satisfy various users' performance requirement, utilize resource fully efficiently, improve system spectral efficiency; And can guarantee the reasonability that various Resource Units are multiplexing, and reduce implementation complexity.
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 (7)
1. a frequency spectrum resource sorting technique is characterized in that, the frequency spectrum resource of system is classified according to channel condition, and sorted frequency spectrum resource comprises:
Adopt the first kind resource of centralized resources block structure, in said centralized resources block structure, subcarrier is continuous physically in the Resource Block;
Adopt second type of resource of distributed resource block structure, in said distributed resource block structure, subcarrier is discontinuous physically in the Resource Block, and discrete according to certain particle;
Adopt the 3rd type of resource of distributed subframe cascade resource block structures, wherein, said distributed subframe cascade resource block structures; Be meant that subcarrier physically is discontinuous in the Resource Block; And discrete according to certain particle, and across the symbol lengths of k sub-frame, each distributed subframe cascade Resource Block is made up of k category-B piece or the sub-piece of C class; One sub-block is arranged on each subframe, the structure of its sub-piece respectively with the distributed resource block structure in category-B piece and the sub-piece of C class consistent; Wherein, the structure of said category-B piece and the sub-piece of C class is (N/k) * T, and wherein, N and N/k are the continuous sub-carriers number, and T is the symbol lengths of a frame, and the k value is respectively 2 and 3.
2. method according to claim 1 is characterized in that, for said first kind resource, the subcarrier in logical resource block is continuous physically; For said second type of resource and said the 3rd type of resource, the subcarrier in logical resource block is discrete by certain particle size physically, and wherein, logical resource block is the base unit of scheduling.
3. method according to claim 1 is characterized in that, in said distributed resource block structure, Resource Block is made up of the experimental process piece.
4. method according to claim 3 is characterized in that, said sub-piece comprises: structure is the category-A piece of N* (T/2); Category-B piece and the sub-piece of C class.
5. method according to claim 1 is characterized in that, in said the 3rd type of resource, the subcarrier of each sub-frame of cascade adopts different frequency-hopping modes.
6. a frequency spectrum resource division methods is characterized in that, said method comprises:
With a resource bunch is that subcarrier is reset by unit, and Physical Resource Block is renumberd, and wherein, resource bunch comprises at least one Physical Resource Block;
Bunch is unit with the Physical Resource Block after resetting with a Physical Resource Block or resource, is divided into a plurality of channeling resource groups;
In each said channeling resource group, be that unit marks off localized resource blocks that is used for centralized resources and the distributed resource blocks that is used for distributed resource with the Physical Resource Block;
In each said channeling resource group, localized resource blocks is mapped to the said Physical Resource Block that is used for centralized resources, distributed resource blocks is mapped to the said Physical Resource Block that is used for distributed resource; Wherein, distributed resource blocks is mapped on the said Physical Resource Block that is used for distributed resource specifically comprises: said distributed resource blocks is divided, the said distributed resource blocks after dividing is shone upon;
Wherein, Said distributed resource blocks divided specifically comprise: in each said channeling resource group, be that subcarrier is reset by unit with distributed resource with category-A piece, and Physical Resource Block is renumberd; Wherein, Said category-A piece is meant that structure is the sub-piece of N* (T/2), and N is the continuous sub-carriers number, and T is the symbol lengths of a frame;
In each said channeling resource group; Mark off category-A distributed resource, category-B distributed resource, three types of distributed resources of C class distributed resource; Said three types of distributed resources comprise following three types sub-piece respectively: said category-A piece; Structure is category-B piece and the sub-piece of C class of (N/k) * T, and wherein, the k value is respectively 2 and 3;
In each said channeling resource group, be that subcarrier is reset by unit further with the category-B distributed resource, and Physical Resource Block is renumberd with category-B piece; Category-B distributed resource after resetting is marked off DRU-2 type distributed resource and the distributed subframe cascade of DRU-4 type resource according to demand;
In each said channeling resource group, be that subcarrier is reset by unit further with C class distributed resource, and Physical Resource Block is renumberd with the sub-piece of C class; C class distributed resource after resetting is marked off DRU-3 type distributed resource and the distributed subframe cascade of DRU-5 type resource according to demand;
Wherein, the distributed resource blocks of DRU-1 type distributed resource blocks for constituting by category-A piece; DRU-2 type distributed resource blocks, DRU-3 type distributed resource blocks are respectively the distributed resource blocks that is made up of the sub-piece of category-B piece/C class; The distributed subframe cascade of DRU-4 type Resource Block is the distributed subframe cascade Resource Block that is made up of category-B piece of striding two sub-frame symbols; The distributed subframe cascade of DRU-5 type Resource Block is the distributed subframe cascade Resource Block that is made up of the sub-piece of C class of striding three sub-frame symbols.
7. method according to claim 6 is characterized in that, said said distributed resource blocks after dividing is shone upon specifically comprises:
In each said channeling resource group, DRU-1 type distributed resource blocks is mapped on the category-A distributed resource through frequency-hopping mode;
DRU-2 type distributed resource blocks is mapped directly on the DRU-2 type distributed resource, be mapped to the distributed subframe cascade of DRU-4 type Resource Block on the distributed subframe cascade of the DRU-4 type resource of striding two sub-frame through frequency-hopping mode;
DRU-3 type distributed resource blocks is mapped directly on the DRU-3 type distributed resource, the distributed subframe cascade of DRU-5 type Resource Block is mapped on the distributed subframe cascade of the DRU-5 type resource of striding three sub-frame through frequency-hopping mode.
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| CN102413476B (en) * | 2012-01-04 | 2014-04-02 | 西安电子科技大学 | Dynamic combination and allocation method of CRB (Cognitive Resource Block) resource in cognitive LTE (Long-Term Evolution) system |
| WO2016070415A1 (en) * | 2014-11-07 | 2016-05-12 | Mediatek Singapore Pte. Ltd. | Methods for resource allocation |
| US10461822B2 (en) | 2018-01-12 | 2019-10-29 | Huawei Technologies Co., Ltd. | Communication method, network device, and terminal device |
| CN110034796A (en) * | 2018-01-12 | 2019-07-19 | 华为技术有限公司 | Method, the network equipment and the terminal device of communication |
| CN112804751A (en) * | 2019-11-13 | 2021-05-14 | 中国电信股份有限公司 | Uplink coverage lifting method and device, storage medium and terminal equipment |
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