CN105554893A - Time-frequency resource distribution method and time-frequency resource distribution device for LTE system - Google Patents
Time-frequency resource distribution method and time-frequency resource distribution device for LTE system Download PDFInfo
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- CN105554893A CN105554893A CN201610053640.8A CN201610053640A CN105554893A CN 105554893 A CN105554893 A CN 105554893A CN 201610053640 A CN201610053640 A CN 201610053640A CN 105554893 A CN105554893 A CN 105554893A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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Abstract
The invention provides a time-frequency resource distribution method and a time-frequency resource distribution device for a LTE system, wherein the time-frequency resource distribution method for the LTE system comprises the following steps: distributing resource blocks to a first type of resources and a second type of resources, wherein transmission time intervals supported by the first type of resources and the second type of resources are different; and controlling the resource blocks occupied by the first type of resources and the resource blocks occupied by the second type of resources to alternatively distribute on the system bandwidth of the LTE system in a comb manner in the frequency domain. By means of the technical scheme of the invention, the resource blocks are distributed to the first type of resources and the second type of resources more reasonably; therefore, the frequency diversity gain can be obtained better; and furthermore, interruption of a low-delay service is also avoided.
Description
Technical field
The present invention relates to communication technical field, in particular to a kind of distribution method of time frequency resources for LTE system and a kind of time-frequency resource allocating device for LTE system.
Background technology
At present, along with the development of mobile Internet, emerge the applied business meeting various specific function in a large number.Wherein many business have strict requirement to data delay, such as game, booking etc.This kind of business all requires that the time delay of user data is short as much as possible usually.In LTE (LongTermEvolution, Long Term Evolution) system, Transmission Time Interval is the important indicator affecting user data delay.The Transmission Time Interval that current LTE system adopts is 1ms, that is, every 1ms sends a secondary data, and receiving terminal can carry out demodulation to the data of every 1ms.
To using the problem of shorter TTI (TransmissionTimeInterval, Transmission Time Interval) to set up the project in LTE system in 3GPPRAN#69 plenary session, research uses the feasibility of shorter TTI and possible beneficial effect.The situation that 1msTTI and shorter TTI (such as 0.5ms etc.) two kinds sends interval and coexists may be there is in the LTE system of later release, namely, in same community, there is the terminal that existing use 1msTTI carries out data transmit-receive, the TTI also having use shorter carries out the terminal of data transmit-receive simultaneously.In order to adapt to this situation, needing reasonably to configure the running time-frequency resource of LTE system, making LTE system can support to carry out with 1msTTI the situation of data transmit-receive, the situation of carrying out data transmit-receive with shorter TTI can be supported again.Such as adopt the mode of time-division, as shown in Figure 1, abscissa t is time domain, ordinate f is frequency domain, each rectangular block is a Resource Block (ResourceBlock, RB), support carry out the running time-frequency resource (hereinafter referred to as first kind resource) of data transmit-receive with 1msTTI and support to be less than running time-frequency resource (hereinafter referred to as Second Type resource) alternately appearance in time domain that 1msTTI carries out data transmit-receive, wherein, Resource Block shared by first kind resource is grey, and the Resource Block shared by Second Type resource is colourless; Or adopt the mode of frequency division, as shown in Figure 2, a part of RB is divided carrying first kind resource, and remaining RB is divided carrying Second Type resource.
In above-mentioned time division way, the Resource Block occupied by Second Type resource is discontinuous in time domain, and the business be mapped in Second Type resource likely there will be interruption, and is unfavorable for reducing service delay; In above-mentioned frequency division manner, first kind resource and the Resource Block shared by Second Type resource are centralized, are unfavorable for the advantage utilizing frequency diversity.
Therefore, how more reasonably current problem demanding prompt solution is become for first kind resource and Second Type Resourse Distribute Resource Block.
Summary of the invention
The present invention, just based on the problems referred to above, proposes a kind of new technical scheme, is more reasonably first kind resource and Second Type Resourse Distribute Resource Block, not only can obtains frequency diversity gain preferably, but also avoid the interruption of low time delay business.
In view of this, a first aspect of the present invention proposes a kind of distribution method of time frequency resources for LTE system, comprise: be first kind resource and Second Type Resourse Distribute Resource Block, wherein, described first kind resource is different with the Transmission Time Interval that described Second Type resource is supported; Control the Resource Block shared by described first kind resource and the Resource Block shared by described Second Type resource is alternately distributed in the system bandwidth of described LTE system in pectination on frequency domain.
In this technical scheme, be alternately distributed on the system bandwidth of LTE system in pectination by the Resource Block shared by control first kind resource and the Resource Block shared by Second Type resource on frequency domain, make the Resource Block in system bandwidth evenly or shared by approaches uniformity deployment first kind resource and the Resource Block shared by Second Type resource, thus frequency diversity gain can be obtained preferably.And, ensure that and support that the running time-frequency resource that Transmission Time Interval is less than 1ms is continuous print in time domain, thus avoid low time delay business appearance interruption, and then ensure that the reliability of low time delay business.
Wherein, namely pectination is alternately distributed, the system bandwidth of setting LTE system is N number of RB, RB1 ~ RBn1 is the first (two) resource type, RBn1+1 ~ RBn2 is the second (one) resource type, and RBn2+1 ~ RBn3 is the first (two) resource type, and RBn3+1 ~ RBn4 is the second (one) resource type, by that analogy, first kind resource and Second Type resource cross-distribution on the N number of RB of system bandwidth.
The Transmission Time Interval of first kind resource support is 1ms, and the Transmission Time Interval of Second Type resource support is for being less than 1ms.
In technique scheme, preferably, be the step of described first kind resource and described Second Type Resourse Distribute Resource Block, specifically comprise: the ratio calculating the traffic carrying capacity of first kind business in described LTE system and the traffic carrying capacity of Second Type business; According to Resource Block total quantity in the value of described ratio and described system bandwidth, be defined as the quantity of the quantity of the Resource Block of described first kind Resourse Distribute and the Resource Block for described Second Type Resourse Distribute.
In this technical scheme, in conjunction with the ratio of the traffic carrying capacity of first kind business in LTE system and the traffic carrying capacity of Second Type business, be first kind resource and Second Type Resourse Distribute Resource Block, thus make the distribution of Resource Block block more rationally and optimize.
Wherein, Second Type business is low time delay business, and as game, booking, first kind business is general service, as browsing page.
In above-mentioned arbitrary technical scheme, preferably, for the step of described first kind resource and described Second Type Resourse Distribute Resource Block, specifically comprising: be the Resource Block of described first kind Resourse Distribute first predetermined number, is the Resource Block of described Second Type Resourse Distribute second predetermined number.
In this technical scheme, for the quantity of the Resource Block of first kind resource and Second Type Resourse Distribute can also be fixing.
In above-mentioned arbitrary technical scheme, preferably, on frequency domain, the continuous multiple Resource Block shared by running time-frequency resource of same type form Resource Block group; And be the step of described first kind resource and described Second Type Resourse Distribute Resource Block, also comprise: according to default restrictive condition for described first kind resource and described Second Type Resource Design distribute the quantity of the Resource Block that described Resource Block group comprises.
In this technical scheme, during the quantity of the Resource Block comprised for first kind resource and Second Type Resource Design Resources allocation block group, default restrictive condition should be considered, thus make as first kind resource and Second Type Resource Design Resources allocation block more rationally and are more optimized.
In above-mentioned arbitrary technical scheme, preferably, described default restrictive condition comprises: the ascending resource block distributed for any terminal in described LTE system is continuous on frequency domain; Or the ascending resource block distributed for any terminal in described LTE system is divided into two bunches, the Resource Block in each bunch in described two bunches is continuous on frequency domain, discontinuous on frequency domain between described two bunches; After meeting above condition, on frequency domain, the quantity of continuous print ascending resource block also will meet following formula:
N＝2
a×3
b×5
c；
Wherein, N represents the quantity of described continuous print ascending resource block, and a, b, c are the integer being more than or equal to 0.
In this technical scheme, during the quantity of the Resource Block comprised for first kind resource and Second Type Resource Design Resources allocation block group, above-mentioned default restrictive condition should be considered, thus make as first kind resource and Second Type Resource Design Resources allocation block more rationally and are more optimized, when giving any terminal by the Resource Block in Resource Block group, the demand of any terminal multiple business can be met.
In above-mentioned arbitrary technical scheme, preferably, distribute the step of the quantity of the Resource Block that described Resource Block group comprises according to described default restrictive condition for described first kind resource and described Second Type Resource Design, specifically comprise:
According to the sum of the quantity of the Resource Block group of described first kind resource, the Resource Block of first kind resource, determine the quantity of the Resource Block that the Resource Block group of described first kind resource comprises;
According to the sum of the quantity of the Resource Block group of described Second Type resource, the Resource Block of Second Type resource, determine the quantity of the Resource Block that the Resource Block group of described Second Type resource comprises.
Such as, in LTE system, the Resource Block group number of first kind resource is 5 groups, and the sum of the Resource Block of first kind resource is 25, then need the quantity sum ensureing Resource Block in these 5 groups of Resource Block groups to be 25.
A second aspect of the present invention proposes a kind of time-frequency resource allocating device for LTE system, comprise: allocation units, for being first kind resource and Second Type Resourse Distribute Resource Block, wherein, described first kind resource is different with the Transmission Time Interval that described Second Type resource is supported; Control unit, is connected to described allocation units, is alternately distributed system bandwidth in described LTE system for controlling the Resource Block shared by described first kind resource and the Resource Block shared by described Second Type resource on frequency domain in pectination.
In this technical scheme, be alternately distributed on the system bandwidth of LTE system in pectination by the Resource Block shared by control first kind resource and the Resource Block shared by Second Type resource on frequency domain, make the Resource Block in system bandwidth evenly or shared by approaches uniformity deployment first kind resource and the Resource Block shared by Second Type resource, thus frequency diversity gain can be obtained preferably.And, ensure that and support that the running time-frequency resource that Transmission Time Interval is less than 1ms is continuous print in time domain, thus avoid low time delay business appearance interruption, and then ensure that the reliability of low time delay business.
Wherein, namely pectination is alternately distributed, the system bandwidth of setting LTE system is N number of RB, RB1 ~ RBn1 is the first (two) resource type, RBn1+1 ~ RBn2 is the second (one) resource type, and RBn2+1 ~ RBn3 is the first (two) resource type, and RBn3+1 ~ RBn4 is the second (one) resource type, by that analogy, first kind resource and Second Type resource cross-distribution on the N number of RB of system bandwidth.
The Transmission Time Interval of first kind resource support is 1ms, and the Transmission Time Interval of Second Type resource support is for being less than 1ms.
In technique scheme, preferably, described allocation units comprise: computing unit, for the ratio of the traffic carrying capacity of the traffic carrying capacity and Second Type business that calculate first kind business in described LTE system; Determining unit, for according to Resource Block total quantity in the value of described ratio and described system bandwidth, is defined as the quantity of the quantity of the Resource Block of described first kind Resourse Distribute and the Resource Block for described Second Type Resourse Distribute.
In this technical scheme, in conjunction with the ratio of the traffic carrying capacity of first kind business in LTE system and the traffic carrying capacity of Second Type business, be first kind resource and Second Type Resourse Distribute Resource Block, thus make the distribution of Resource Block block more rationally and optimize.
Wherein, Second Type business is low time delay business, and as game, booking, first kind business is general service, as browsing page.
In above-mentioned arbitrary technical scheme, preferably, described allocation units specifically for, being the Resource Block of described first kind Resourse Distribute first predetermined number, is the Resource Block of described Second Type Resourse Distribute second predetermined number.
In this technical scheme, for the quantity of the Resource Block of first kind resource and Second Type Resourse Distribute can also be fixing.
In above-mentioned arbitrary technical scheme, preferably, on frequency domain, the continuous multiple Resource Block shared by running time-frequency resource of same type form Resource Block group; And described allocation units also for, according to default restrictive condition for described first kind resource and described Second Type Resource Design distribute the quantity of the Resource Block that described Resource Block group comprises.
In this technical scheme, during the quantity of the Resource Block comprised for first kind resource and Second Type Resource Design Resources allocation block group, default restrictive condition should be considered, thus make as first kind resource and Second Type Resource Design Resources allocation block more rationally and are more optimized.
In above-mentioned arbitrary technical scheme, preferably, described default restrictive condition comprises: the ascending resource block distributed for any terminal in described LTE system is continuous on frequency domain; Or the ascending resource block distributed for any terminal in described LTE system is divided into two bunches, the Resource Block in each bunch in described two bunches is continuous on frequency domain, discontinuous on frequency domain between described two bunches; After meeting above condition, on frequency domain, the quantity of continuous print ascending resource block also will meet following formula:
B＝2
a×3
b×5
c；
Wherein, N represents the quantity of described continuous print ascending resource block, and a, b, c are the integer being more than or equal to 0.
In this technical scheme, during the quantity of the Resource Block comprised for first kind resource and Second Type Resource Design Resources allocation block group, above-mentioned default restrictive condition should be considered, thus make as first kind resource and Second Type Resource Design Resources allocation block more rationally and are more optimized, when giving any terminal by the Resource Block in Resource Block group, the demand of any terminal multiple business can be met.
In above-mentioned arbitrary technical scheme, preferably, described allocation units specifically for, according to the sum of the quantity of the Resource Block group of described first kind resource, the Resource Block of first kind resource, determine the quantity of the Resource Block that the Resource Block group of described first kind resource comprises; According to the sum of the quantity of the Resource Block group of described Second Type resource, the Resource Block of Second Type resource, determine the quantity of the Resource Block that the Resource Block group of described Second Type resource comprises.
Such as, in LTE system, the Resource Block group number of first kind resource is 5 groups, and the sum of the Resource Block of first kind resource is 25, then need the quantity sum ensureing Resource Block in these 5 groups of Resource Block groups to be 25.
Another aspect of the present invention proposes a kind of base station, comprise the time-frequency resource allocating device for LTE system according to any one of technique scheme, therefore, this base station has and the technique effect identical for the time-frequency resource allocating device of LTE system according to any one of technique scheme, does not repeat them here.
By technical scheme of the present invention, be more reasonably first kind resource and Second Type Resourse Distribute Resource Block, not only can obtain frequency diversity gain preferably, but also avoid the interruption of low time delay business.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the mode Resources allocation block of the employing time-division in correlation technique;
Fig. 2 shows the schematic diagram of the mode Resources allocation block of the employing frequency division in correlation technique;
Fig. 3 shows the schematic flow sheet of the distribution method of time frequency resources for LTE system according to an embodiment of the invention;
Fig. 4 shows the structural representation of the time-frequency resource allocating device for LTE system according to an embodiment of the invention;
Fig. 5 shows the structural representation of base station according to an embodiment of the invention;
Fig. 6 shows the schematic diagram of the mode Resources allocation block of employing frequency division according to an embodiment of the invention;
Fig. 7 shows the schematic diagram of the mode Resources allocation block of employing frequency division according to another embodiment of the invention.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 3 shows the schematic flow sheet of the distribution method of time frequency resources for LTE system according to an embodiment of the invention.
As shown in Figure 3, the distribution method of time frequency resources for LTE system according to an embodiment of the invention, comprising:
Step 302, be first kind resource and Second Type Resourse Distribute Resource Block, wherein, described first kind resource is different with the Transmission Time Interval that described Second Type resource is supported;
Step 304, controls the Resource Block shared by described first kind resource and the Resource Block shared by described Second Type resource is alternately distributed in the system bandwidth of described LTE system in pectination on frequency domain.
In this technical scheme, be alternately distributed on the system bandwidth of LTE system in pectination by the Resource Block shared by control first kind resource and the Resource Block shared by Second Type resource on frequency domain, make the Resource Block in system bandwidth evenly or shared by approaches uniformity deployment first kind resource and the Resource Block shared by Second Type resource, thus frequency diversity gain can be obtained preferably.And, ensure that and support that the running time-frequency resource that Transmission Time Interval is less than 1ms is continuous print in time domain, thus avoid low time delay business appearance interruption, and then ensure that the reliability of low time delay business.
Wherein, namely pectination is alternately distributed, the system bandwidth of setting LTE system is N number of RB, RB1 ~ RBn1 is the first (two) resource type, RBn1+1 ~ RBn2 is the second (one) resource type, and RBn2+1 ~ RBn3 is the first (two) resource type, and RBn3+1 ~ RBn4 is the second (one) resource type, by that analogy, first kind resource and Second Type resource cross-distribution on the N number of RB of system bandwidth.
The Transmission Time Interval of first kind resource support is 1ms, and the Transmission Time Interval of Second Type resource support is for being less than 1ms.
In technique scheme, preferably, step 302 specifically comprises: the ratio calculating the traffic carrying capacity of first kind business in described LTE system and the traffic carrying capacity of Second Type business; According to Resource Block total quantity in the value of described ratio and described system bandwidth, be defined as the quantity of the quantity of the Resource Block of described first kind Resourse Distribute and the Resource Block for described Second Type Resourse Distribute.
In this technical scheme, in conjunction with the ratio of the traffic carrying capacity of first kind business in LTE system and the traffic carrying capacity of Second Type business, be first kind resource and Second Type Resourse Distribute Resource Block, thus make the distribution of Resource Block block more rationally and optimize.
Wherein, Second Type business is low time delay business, and as game, booking, first kind business is general service, as browsing page.
In above-mentioned arbitrary technical scheme, preferably, step 302 specifically comprises: be the Resource Block of described first kind Resourse Distribute first predetermined number, is the Resource Block of described Second Type Resourse Distribute second predetermined number.
In this technical scheme, for the quantity of the Resource Block of first kind resource and Second Type Resourse Distribute can also be fixing.
In above-mentioned arbitrary technical scheme, preferably, on frequency domain, the continuous multiple Resource Block shared by running time-frequency resource of same type form Resource Block group; And step 302 also comprises: according to default restrictive condition for described first kind resource and described Second Type Resource Design distribute the quantity of the Resource Block that described Resource Block group comprises.
In this technical scheme, during the quantity of the Resource Block comprised for first kind resource and Second Type Resource Design Resources allocation block group, default restrictive condition should be considered, thus make as first kind resource and Second Type Resource Design Resources allocation block more rationally and are more optimized.
In above-mentioned arbitrary technical scheme, preferably, described default restrictive condition comprises: the ascending resource block distributed for any terminal in described LTE system is continuous on frequency domain; Or the ascending resource block distributed for any terminal in described LTE system is divided into two bunches, the Resource Block in each bunch in described two bunches is continuous on frequency domain, discontinuous on frequency domain between described two bunches; After meeting above condition, on frequency domain, the quantity of continuous print ascending resource block also will meet following formula:
N＝2
a×3
b×5
c；
Wherein, N represents the quantity of described continuous print ascending resource block, and a, b, c are the integer being more than or equal to 0.
In this technical scheme, during the quantity of the Resource Block comprised for first kind resource and Second Type Resource Design Resources allocation block group, above-mentioned default restrictive condition should be considered, thus make as first kind resource and Second Type Resource Design Resources allocation block more rationally and are more optimized, when giving any terminal by the Resource Block in Resource Block group, the demand of any terminal multiple business can be met.
Such as, when Resource Block group divides, do not consider above-mentioned in default restrictive condition, the quantity of the RB of each Resource Block group after division is 3, and under this method of salary distribution, the quantity maximum of continuous print RB is 3.
In the process of communication, if there is a terminal burst to have more a certain class uplink service (can be first kind business in LTE system, or Second Type business), so preferably scheme should be to the more RB (supposing to need distribution 10) of terminal distribution.But owing to only having 3 in the RB quantity of prior design Resource Block group, so in once transmitting, the RB that can give this terminal just can only have 6 (namely two bunches, each bunch of 3 RB) at most, can not meet the demand of terminal.
Therefore, when Resource Block group divides, if consider above-mentioned in default restrictive condition, then can meet various business demand for first kind resource and Second Type Resource Design Resources allocation block.Preferably mode is, the quantity of the continuous print Resource Block that Resource Block group comprises can not be all very little, and the quantity of the Resource Block that some resource groups at least will be had to comprise is comparatively large, could meet the demand of the larger user of some bursty traffic like this.
In above-mentioned arbitrary technical scheme, preferably, distribute the step of the quantity of the Resource Block that described Resource Block group comprises according to described default restrictive condition for described first kind resource and described Second Type Resource Design, specifically comprise:
According to the sum of the quantity of the Resource Block group of described first kind resource, the Resource Block of first kind resource, determine the quantity of the Resource Block that the Resource Block group of described first kind resource comprises; According to the sum of the quantity of the Resource Block group of described Second Type resource, the Resource Block of Second Type resource, determine the quantity of the Resource Block that the Resource Block group of described Second Type resource comprises.
Such as, in LTE system, the Resource Block group number of first kind resource is 5 groups, and the sum of the Resource Block of first kind resource is 25, then need the quantity sum ensureing Resource Block in these 5 groups of Resource Block groups to be 25.
Fig. 4 shows the structural representation of the time-frequency resource allocating device for LTE system according to an embodiment of the invention.
As shown in Figure 4, time-frequency resource allocating device 400 for LTE system according to an embodiment of the invention, comprise: allocation units 402 and control unit 404, allocation units 402 are for being first kind resource and Second Type Resourse Distribute Resource Block, wherein, described first kind resource is different with the Transmission Time Interval that described Second Type resource is supported; Control unit 404, is connected to described allocation units 402, is alternately distributed system bandwidth in described LTE system for controlling the Resource Block shared by described first kind resource and the Resource Block shared by described Second Type resource on frequency domain in pectination.
In this technical scheme, be alternately distributed on the system bandwidth of LTE system in pectination by the Resource Block shared by control first kind resource and the Resource Block shared by Second Type resource on frequency domain, make the Resource Block in system bandwidth evenly or shared by approaches uniformity deployment first kind resource and the Resource Block shared by Second Type resource, thus frequency diversity gain can be obtained preferably.And, ensure that and support that the running time-frequency resource that Transmission Time Interval is less than 1ms is continuous print in time domain, thus avoid low time delay business appearance interruption, and then ensure that the reliability of low time delay business.
Wherein, namely pectination is alternately distributed, the system bandwidth of setting LTE system is N number of RB, RB1 ~ RBn1 is the first (two) resource type, RBn1+1 ~ RBn2 is the second (one) resource type, and RBn2+1 ~ RBn3 is the first (two) resource type, and RBn3+1 ~ RBn4 is the second (one) resource type, by that analogy, first kind resource and Second Type resource cross-distribution on the N number of RB of system bandwidth.
The Transmission Time Interval of first kind resource support is 1ms, and the Transmission Time Interval of Second Type resource support is for being less than 1ms.
In technique scheme, preferably, described allocation units 402 comprise: computing unit 4022, for the ratio of the traffic carrying capacity of the traffic carrying capacity and Second Type business that calculate first kind business in described LTE system; Determining unit 4024, for according to Resource Block total quantity in the value of described ratio and described system bandwidth, is defined as the quantity of the quantity of the Resource Block of described first kind Resourse Distribute and the Resource Block for described Second Type Resourse Distribute.
In this technical scheme, in conjunction with the ratio of the traffic carrying capacity of first kind business in LTE system and the traffic carrying capacity of Second Type business, be first kind resource and Second Type Resourse Distribute Resource Block, thus make the distribution of Resource Block block more rationally and optimize.
Wherein, Second Type business is low time delay business, and as game, booking, first kind business is general service, as browsing page.
In above-mentioned arbitrary technical scheme, preferably, described allocation units 402 specifically for, being the Resource Block of described first kind Resourse Distribute first predetermined number, is the Resource Block of described Second Type Resourse Distribute second predetermined number.
In this technical scheme, for the quantity of the Resource Block of first kind resource and Second Type Resourse Distribute can also be fixing.
In above-mentioned arbitrary technical scheme, preferably, on frequency domain, the continuous multiple Resource Block shared by running time-frequency resource of same type form Resource Block group; And described allocation units 402 also for, according to default restrictive condition for described first kind resource and described Second Type Resource Design distribute the quantity of the Resource Block that described Resource Block group comprises.
In this technical scheme, during the quantity of the Resource Block comprised for first kind resource and Second Type Resource Design Resources allocation block group, default restrictive condition should be considered, thus make as first kind resource and Second Type Resource Design Resources allocation block more rationally and are more optimized.
In above-mentioned arbitrary technical scheme, preferably, described default restrictive condition comprises: the ascending resource block distributed for any terminal in described LTE system is continuous on frequency domain; Or the ascending resource block distributed for any terminal in described LTE system is divided into two bunches, the Resource Block in each bunch in described two bunches is continuous on frequency domain, discontinuous on frequency domain between described two bunches; After meeting above condition, on frequency domain, the quantity of continuous print ascending resource block also will meet following formula:
N＝2
a×3
b×5
c；
Wherein, N represents the quantity of described continuous print ascending resource block, and a, b, c are the integer being more than or equal to 0.
In this technical scheme, during the quantity of the Resource Block comprised for first kind resource and Second Type Resource Design Resources allocation block group, above-mentioned default restrictive condition should be considered, thus make as first kind resource and Second Type Resource Design Resources allocation block more rationally and are more optimized, when giving any terminal by the Resource Block in Resource Block group, the demand of any terminal multiple business can be met.
In above-mentioned arbitrary technical scheme, preferably, described allocation units 402 specifically for, according to the sum of the quantity of the Resource Block group of described first kind resource, the Resource Block of first kind resource, determine the quantity of the Resource Block that the Resource Block group of described first kind resource comprises; According to the sum of the quantity of the Resource Block group of described Second Type resource, the Resource Block of Second Type resource, determine the quantity of the Resource Block that the Resource Block group of described Second Type resource comprises.
Such as, in LTE system, the Resource Block group number of first kind resource is 5 groups, and the sum of the Resource Block of first kind resource is 25, then need the quantity sum ensureing Resource Block in these 5 groups of Resource Block groups to be 25.
Fig. 5 shows the structural representation of base station according to an embodiment of the invention.
As shown in Figure 5, base station 500 according to an embodiment of the invention, comprise the time-frequency resource allocating device 400 for LTE system according to any one of technique scheme, therefore, this base station 500 has and the technique effect identical for the time-frequency resource allocating device 400 of LTE system according to any one of technique scheme, does not repeat them here.
Fig. 6 shows the schematic diagram of the mode Resources allocation block of employing frequency division according to an embodiment of the invention.
As shown in Figure 6, Resource Block shared by first kind resource is grey, Resource Block shared by Second Type resource is colourless, and the Resource Block shared by first kind resource and the Resource Block shared by Second Type resource are alternately distributed in the system bandwidth of LTE system in pectination on frequency domain.Wherein, the continuous multiple Resource Block shared by same resource type form RB group (i.e. Resource Block group), such as, RB1 ~ RBn1 forms a RB group, RBn1+1 ~ RBn2 forms a RB group, and RBn2+1 ~ RBn3 forms a RB group, and RBn3+1 ~ RBn4 forms a RB group.
1, for each RB group between same resource type or different resource types, the RB number that the inherent frequency domain of each RB group comprises can be the same or different, namely RB1 ~ RBn1 the number of RB comprised and RB comprised in RBn2+1 ~ RBn3 number can identical also can not be identical, the number of the RB that RBn1+1 ~ RBn2 comprises and the number of the RB comprised in RBn2+1 ~ RBn3 can identical also can not be identical.
2, for different resource types, the group number of the RB group occupied by each resource type may be identical or different, can also determine the quantity of the RB shared by each resource type according to the traffic carrying capacity ratio of the low time delay business in LTE system and general service.
3, consider the default restrictive condition to the up RB of terminal distribution in LTE system, be the ascending resource block that in LTE system, any terminal is distributed continuous on frequency domain; Or the ascending resource block distributed for any terminal in LTE system is divided into two bunches, the Resource Block in each bunch in two bunches is continuous on frequency domain, discontinuous on frequency domain between two bunches; After meeting above condition, on frequency domain, the quantity of continuous print ascending resource block also will meet following formula:
N＝2
a×3
b×5
c；
Wherein, N represents the quantity of continuous print ascending resource block, and a, b, c are the integer being more than or equal to 0.This condition can be considered when arranging the RB number in RB group.
4, all terminals in LTE system can adopt identical time-frequency resource allocating mode, and namely for all terminals in LTE system, the situation of the RB of first kind resource and Second Type Resourse Distribute is duplicate; Also may have corresponding first kind resource and the RB distribution diagram of Second Type resource for each terminal, the RB distribution diagram of each terminal can be the same or different.
Technical scheme of the present invention is described in detail below by an embodiment:
In this embodiment, the system bandwidth of LTE system is 10MHz, and this system bandwidth has 50 RB, and requires in LTE system that the traffic carrying capacity of low time delay is less, and the traffic carrying capacity of general service is more.
As shown in Figure 7, Resource Block shared by first kind resource is grey, Resource Block shared by Second Type resource is colourless, and the Resource Block shared by first kind resource and the Resource Block shared by Second Type resource are alternately distributed in the system bandwidth of LTE system in pectination on frequency domain.
1, consider the impact of different business amount, such as, the traffic carrying capacity of low time delay business is less, and the traffic carrying capacity of general service is more, for the quantity of the RB of first kind Resourse Distribute is more, for the quantity of the RB of Second Type Resourse Distribute is more, in the figure 7, being first kind Resourse Distribute 39 RB, is Second Type Resourse Distribute 11 RB.
2, default restrictive condition in above-mentioned when considering RB up for terminal distribution, 5 RB groups can be comprised in Resource Block shared by Second Type resource, the quantity of the RB comprised in each RB group is 1,2,5,2,1 respectively, the RB group comprising 5 RB can have more requirement to be assigned with during the traffic carrying capacity of low time delay (can certainly be assigned with when traffic carrying capacity is less) in terminal, and the RB group comprising 1,2 RB can have less requirement to be assigned with during the traffic carrying capacity of low time delay in terminal.
3, consider the advantage that will utilize frequency diversity, first kind resource and the RB shared by Second Type resource become pectination alternately and being distributed in whole system bandwidth of approaches uniformity.
4, each terminal in LTE system can adopt identical RB distribution diagram, also can adopt different RB distribution diagrams.
More than be described with reference to the accompanying drawings technical scheme of the present invention, by technical scheme of the present invention, can in system bandwidth evenly or approaches uniformity dispose the Resource Block shared by first kind resource and the Resource Block shared by Second Type resource, thus be more reasonably first kind resource and Second Type Resourse Distribute Resource Block, and then frequency diversity gain can be obtained preferably.And avoid low time delay business to occur interrupting, thus ensure that the reliability of low time delay business.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. for a distribution method of time frequency resources for LTE system, it is characterized in that, comprising:
For first kind resource and Second Type Resourse Distribute Resource Block, wherein, described first kind resource is different with the Transmission Time Interval that described Second Type resource is supported;
Control the Resource Block shared by described first kind resource and the Resource Block shared by described Second Type resource is alternately distributed in the system bandwidth of described LTE system in pectination on frequency domain.
2. the distribution method of time frequency resources for LTE system according to claim 1, is characterized in that, is the step of described first kind resource and described Second Type Resourse Distribute Resource Block, specifically comprises:
Calculate the ratio of the traffic carrying capacity of first kind business in described LTE system and the traffic carrying capacity of Second Type business;
According to Resource Block total quantity in the value of described ratio and described system bandwidth, be defined as the quantity of the quantity of the Resource Block of described first kind Resourse Distribute and the Resource Block for described Second Type Resourse Distribute.
3. the distribution method of time frequency resources for LTE system according to claim 1, is characterized in that, is the step of described first kind resource and described Second Type Resourse Distribute Resource Block, specifically comprises:
For the Resource Block of described first kind Resourse Distribute first predetermined number, it is the Resource Block of described Second Type Resourse Distribute second predetermined number.
4. the distribution method of time frequency resources for LTE system according to any one of claim 1 to 3, is characterized in that, on frequency domain, the continuous multiple Resource Block shared by running time-frequency resource of same type form Resource Block group; And be the step of described first kind resource and described Second Type Resourse Distribute Resource Block, also comprise:
According to default restrictive condition for described first kind resource and described Second Type Resource Design distribute the quantity of the Resource Block that described Resource Block group comprises.
5. the distribution method of time frequency resources for LTE system according to claim 4, is characterized in that, described default restrictive condition comprises:
The ascending resource block distributed for any terminal in described LTE system is continuous on frequency domain; Or
The ascending resource block distributed for any terminal in described LTE system is divided into two bunches, and the Resource Block in each bunch in described two bunches is continuous on frequency domain, discontinuous on frequency domain between described two bunches;
After meeting above condition, on frequency domain, the quantity of continuous print ascending resource block also will meet following formula:
N＝2
a×3
b×5
c；
Wherein, N represents the quantity of described continuous print ascending resource block, and a, b, c are the integer being more than or equal to 0.
6., for a time-frequency resource allocating device for LTE system, it is characterized in that, comprising:
Allocation units, for being first kind resource and Second Type Resourse Distribute Resource Block, wherein, described first kind resource is different with the Transmission Time Interval that described Second Type resource is supported;
Control unit, is connected to described allocation units, is alternately distributed system bandwidth in described LTE system for controlling the Resource Block shared by described first kind resource and the Resource Block shared by described Second Type resource on frequency domain in pectination.
7. the time-frequency resource allocating device for LTE system according to claim 6, it is characterized in that, described allocation units comprise:
Computing unit, for the ratio of the traffic carrying capacity of the traffic carrying capacity and Second Type business that calculate first kind business in described LTE system;
Determining unit, for according to Resource Block total quantity in the value of described ratio and described system bandwidth, is defined as the quantity of the quantity of the Resource Block of described first kind Resourse Distribute and the Resource Block for described Second Type Resourse Distribute.
8. the time-frequency resource allocating device for LTE system according to claim 6, is characterized in that, described allocation units specifically for,
For the Resource Block of described first kind Resourse Distribute first predetermined number, it is the Resource Block of described Second Type Resourse Distribute second predetermined number.
9. the time-frequency resource allocating device for LTE system according to any one of claim 6 to 8, is characterized in that, on frequency domain, the continuous multiple Resource Block shared by running time-frequency resource of same type form Resource Block group; And described allocation units also for,
According to default restrictive condition for described first kind resource and described Second Type Resource Design distribute the quantity of the Resource Block that described Resource Block group comprises.
10. the time-frequency resource allocating device for LTE system according to claim 9, is characterized in that, described default restrictive condition comprises:
The ascending resource block distributed for any terminal in described LTE system is continuous on frequency domain; Or
The ascending resource block distributed for any terminal in described LTE system is divided into two bunches, and the Resource Block in each bunch in described two bunches is continuous on frequency domain, discontinuous on frequency domain between described two bunches;
After meeting above condition, on frequency domain, the quantity of continuous print ascending resource block also will meet following formula:
N＝2
a×3
b×5
c；
Wherein, N represents the quantity of described continuous print ascending resource block, and a, b, c are the integer being more than or equal to 0.
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