CN101325570A - Method for distributing system resource - Google Patents
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- CN101325570A CN101325570A CNA2007101067600A CN200710106760A CN101325570A CN 101325570 A CN101325570 A CN 101325570A CN A2007101067600 A CNA2007101067600 A CN A2007101067600A CN 200710106760 A CN200710106760 A CN 200710106760A CN 101325570 A CN101325570 A CN 101325570A
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Abstract
The invention discloses a system resources allocating method, including the following steps: S102, dividing all available son carriers into a plurality of resource blocks; S104, dividing the plurality of resource block into a plurality of resource groups; and S106, allocating the plurality of resource components to at least a user. By the invention, the resource allocating and representing method becomes comparatively simple and spending can be decreased.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of method for distributing system resource.
Background technology
OFDM (Orthogonal Frequency Division Multiplexing is called for short OFDM) technology is one of main candidate scheme of following wireless communication technology.The OFDM technology is divided into many orthogonal sub-carriers with given channel in frequency domain, distinguish modulation signal on each subcarrier, and each subcarrier is carried out parallel transmission.Like this, although the frequency response curve of wireless channel is a non-flat forms, has frequency selectivity, but each subcarrier is a relatively flat, what carry out on each subcarrier is narrow band transmission, and signal bandwidth is less than channel width, so the interference between the erasure signal waveform greatly.Because each subcarrier is mutually orthogonal in ofdm system, and their frequency spectrum is overlapped, thus not only reduced the phase mutual interference between subcarrier, and improved the availability of frequency spectrum.In addition, ofdm system utilizes inverse discrete fourier transform/discrete Fourier transform (DFT) (IDFT/DFT) to replace multi-carrier modulation and demodulation, has reduced the complexity of Base-Band Processing.
In ofdm system, because resource occurs with time and frequency two dimension, the more complicated so resource allocation and method for expressing become is especially when bandwidth ratio is big, should consider the flexibility of resource allocation, consider requirements such as the simple and expense of method for expressing is little again.The method of using always is at present, defines a basic Resource Block (Resource Block is called for short RB), is that unit carries out resource allocation then with RB.As descending starting point and the terminating point method of determining the time-frequency position of each user shared resource of each user on time and frequency that provide that adopted of Wimax, this method of salary distribution signaling consumption is big, especially is not suitable for distributing a plurality of discontinuous according to scheduling and the RB of appointment.In addition, can also use the method for bitmap (bitmap), promptly use 1 (or 0) expression CU (or not taking) RB.Great advantage based on the signaling representing method of bitmap is, can support scheduling of resource fully flexibly, but this method for expressing need all be set up corresponding bitmap for each user, when number of users is many, owing between each user's the bitmap very strong correlation is arranged, so the expense waste is more serious.
Summary of the invention
One or more problems in view of the above the invention provides a kind of system resource allocation method.
According to method for distributing system resource of the present invention, may further comprise the steps: S102 is divided into a plurality of Resource Block with all available subcarriers; S104 is divided into a plurality of resource groups with a plurality of Resource Block; And S106, with a plurality of at least one user of set of resources dispensing.
Wherein, the number of the OFDM symbol that comprises in a plurality of Resource Block is identical; The number of the available subcarrier that comprises in the OFDM symbol is identical.The number of the Resource Block that comprises in a plurality of resource groups can be identical, also can be different.
Wherein, in step S102, also be respectively the different logical number of a plurality of resource block assignments according to ad hoc rules.And any one the resource group in a plurality of resource groups comprises under the situation of a plurality of Resource Block, and the logical number of a plurality of Resource Block that any one resource group is comprised is continuous.
Wherein, the number of the Resource Block that is comprised with any one the resource group in a plurality of resource groups of binary number representation.And the logical number of first Resource Block that is comprised with any one the resource group in a plurality of resource groups of binary number representation.
Can be used for ofdm system according to method for distributing system resource of the present invention.And the available subcarrier in the same OFDM symbol can be physically continuous, also can be discontinuous.Subcarrier in the different orthogonal frequency division multiplexing symbol in the same Resource Block can be in identical or different position.
By the present invention, can be so that resource allocation and method for expressing become fairly simple, and can reduce expense.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the method for distributing system resource of the embodiment of the invention;
Fig. 2 is the schematic diagram according to the Resource Block of the embodiment of the invention;
Fig. 3 is the schematic diagram according to the resource group of the embodiment of the invention; And
Fig. 4 be according to control signaling under the 20MHz of the LTE system bandwidth of the embodiment of the invention and the corresponding relation schematic diagram between the branch resource.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
With reference to figure 1, the method for distributing system resource according to the embodiment of the invention is described.As shown in Figure 1, this method for distributing system resource may further comprise the steps:
S102 is divided into some Resource Block to all available subcarriers, and is that each Resource Block RB distributes a logical number according to certain rule.Wherein, contain several OFDM symbols in each Resource Block, the experimental process carrier wave in each OFDM symbol belongs to this Resource Block; Each Resource Block contains identical OFDM symbolic number, and the subcarrier number in each the OFDM symbol in each Resource Block is also identical, belongs to that the subcarrier in the same OFDM symbol can be continuous physically among the same RB, also can be discontinuous physically; Belonging among the same RB subcarrier on the different OFDM symbols can be in identical position, also can be in different positions.
S104 is divided into a resource group (Resource Group is called for short RG) with several Resource Block, contains the RB of identical or different numbers in each resource group, if contain a plurality of RB in the resource group, then the logical number of these RB is continuous.
S106 is that unit gives the user resource allocation with RG, and each user can obtain one or more RG, and the quantity of RG can be fixed also and can not fixed.Wherein, represent to give the number of the RB among each RG of user respectively with binary number, and represent the logical number of first RB among each RG with binary number respectively.
Be that example describes with 3GPP Long Term Evolution (Long Term Evolution is called for short LTE) frequency division multiplexing (Frequency Division Duplex is called for short FDD) system below.Suppose that the bandwidth of this system is 20MHz, then number of usable subcarriers is 1200, contains 14 continuous OFDM symbols in the subframe.With continuous 12 subcarriers, Resource Block RB of continuous 14 OFDM symbolic representations, then in a subframe, contain 100 RB, as shown in Figure 2 below.Suppose that the number of RB only can be 1,2 and 3 among the RG, as shown in Figure 3, then each RG can represent with 9 bits.Wherein, represent RB number among the RG, represent the logical number of first RB among the RG with 7 bits with 2 bits.
The base station is that unit gives user resource allocation with RG.Suppose, two RG of certain user are given in the base station, in first RG, represent that with 01 the number of RB among the RG is 1, represent that with 0001001 the logical number of first RB among first RG is 9, in second RG, represent that with 11 the number of RB among the RG is 3, represent that with 0111001 the logical number of second first RB among the RG is 57, the RB that this moment, this user was given in the base station be exactly logical number be 9,57,58 and 59 RB, be used to indicate the signaling consumption of branch resource be 18 bits, as shown in Figure 4.
In sum, for lower signaling consumption support scheduling of resource more flexibly, the invention provides a kind of efficient resource allocation method.This method is that unit comes Resources allocation with resource group (can contain continuous a plurality of RB in each resource group), and uses binary number to represent the quantity of each resource group position in band system band and the continuous resource piece that contains respectively.
The above is embodiments of the invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (11)
1. a method for distributing system resource is characterized in that, may further comprise the steps:
S102 is divided into a plurality of Resource Block with all available subcarriers;
S104 is divided into a plurality of resource groups with described a plurality of Resource Block; And
S106 is with described a plurality of at least one user of set of resources dispensing.
2. method for distributing system resource according to claim 1 is characterized in that, the number of the OFDM symbol that comprises in described a plurality of Resource Block is identical.
3. method for distributing system resource according to claim 2 is characterized in that the number of the described available subcarrier that comprises in the described OFDM symbol is identical.
4. method for distributing system resource according to claim 3 is characterized in that, the number of the Resource Block that comprises in described a plurality of resource groups is identical or different.
5. according to each described method for distributing system resource in the claim 1 to 4, it is characterized in that, in described step S102, also be respectively the different logical number of described a plurality of resource block assignments according to ad hoc rules.
6. method for distributing system resource according to claim 5, it is characterized in that, any one resource group in described a plurality of resource groups comprises under the situation of a plurality of Resource Block, and the logical number of a plurality of Resource Block that described any one resource group is comprised is continuous.
7. method for distributing system resource according to claim 6 is characterized in that, the number of the Resource Block that is comprised with any one the resource group in the described a plurality of resource groups of binary number representation.
8. method for distributing system resource according to claim 7 is characterized in that, the logical number of first Resource Block that is comprised with any one the resource group in the described a plurality of resource groups of binary number representation.
9. method for distributing system resource according to claim 8 is characterized in that described method is applicable to ofdm system.
10. method for distributing system resource according to claim 9 is characterized in that, the available subcarrier in the same OFDM symbol is continuous or discontinuous physically.
11. method for distributing system resource according to claim 10 is characterized in that, the subcarrier in the different orthogonal frequency division multiplexing symbol in the same Resource Block is in identical or different position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101067600A CN101325570A (en) | 2007-06-15 | 2007-06-15 | Method for distributing system resource |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101067600A CN101325570A (en) | 2007-06-15 | 2007-06-15 | Method for distributing system resource |
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| CN101325570A true CN101325570A (en) | 2008-12-17 |
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| CNA2007101067600A Pending CN101325570A (en) | 2007-06-15 | 2007-06-15 | Method for distributing system resource |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311770A (en) * | 2019-07-05 | 2019-10-08 | 北京神经元网络技术有限公司 | The time-frequency multiplexing method of high-speed industrial communication system based on ofdm communication system |
| CN111278053A (en) * | 2017-06-16 | 2020-06-12 | Oppo广东移动通信有限公司 | Method for transmitting data, terminal equipment and network equipment |
| CN111435852A (en) * | 2019-01-14 | 2020-07-21 | 诺基亚通信公司 | Using vectoring and time and/or frequency division multiple access in a multi-user connection |
-
2007
- 2007-06-15 CN CNA2007101067600A patent/CN101325570A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111278053A (en) * | 2017-06-16 | 2020-06-12 | Oppo广东移动通信有限公司 | Method for transmitting data, terminal equipment and network equipment |
| CN111435852A (en) * | 2019-01-14 | 2020-07-21 | 诺基亚通信公司 | Using vectoring and time and/or frequency division multiple access in a multi-user connection |
| CN111435852B (en) * | 2019-01-14 | 2022-07-22 | 诺基亚通信公司 | Using vectoring and time and/or frequency division multiple access in a multi-user connection |
| CN110311770A (en) * | 2019-07-05 | 2019-10-08 | 北京神经元网络技术有限公司 | The time-frequency multiplexing method of high-speed industrial communication system based on ofdm communication system |
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Application publication date: 20081217 |