CN102123506A - Resource allocation method and device for multiple users - Google Patents

Abstract

The embodiment of the invention discloses a resource allocation method and device for multiple users. The resource allocation method for the multiple users comprises the following steps: determining code word allocation schemes of resource allocation for the multiple users and determining the CQI (channel quality indicator) value of each user in each code word allocation scheme; obtaining TBS (transmission block size) of each user corresponding to the determined CQI value and code word of each user according to the CQI value; and obtaining the total TBS of all users for resource allocation in each code word allocation scheme, and selecting the combination of the CQI value corresponding to the maximum TBS in the total TBS and the code word allocation schemes as a resource allocation scheme. According to the embodiment of the invention, the channel conditions of other users are taken into account while resource allocation is carried out for each user during the resource allocation for the multiple users, so that the total quantity of sent data is the maximum.

Description

The method and apparatus of multi-user's resource allocation

The application be to the applying date be on July 14th, 2008, application number is that 200810132877.0 invention and created name is the dividing an application of application for a patent for invention of data transmission method and device.

Technical field

The embodiment of the invention relates to communication technical field, particularly a kind of method and apparatus of multi-user's resource allocation.

Background technology

3GPP (Third Generation Partnership Project, third generation partner program) begins to introduce HSDPA (High Speed Data Packet Access, high speed packet inserts) from Release 5 agreements.In HSDPA, adopt packet technology, be TTI (Transmission TimeInterval, Transmission Time Interval) transmission data with short subframe.

Network side can dynamically distribute the through-put power and the transmission rate of transmission data according to the channel condition of UE (User Equipment, subscriber equipment) for this UE in HSDPA.The UE side is by HS-DPCCH (High Speed Dedicate Physical Control Channel, uplink high-speed special physical control channel) reports CQI (Channel Quality Indicator channel cycle, the channel quality indication) value, this CQI value has been indicated UE present located channel condition.Release 5 protocol definitions 30 CQI values.The combination of each indication of CQI value a TBS (Transmit Block Size, transmission block size), the number of channel and modulation system.Because the correct probability of acceptance of TBS and the SNR (Signal Noise Ratio, signal to noise ratio) of reception are relevant, so CQI can be mapped as the combination of TBS, the number of channel and modulation system, simultaneously also corresponding to certain SNR value.

In the network of supporting HSDPA, each sub-district is that the transfer of data of HSDPA is distributed certain transfer resource of eating dishes without rice or wine, these transfer resources of eating dishes without rice or wine mainly comprise the through-put power of eating dishes without rice or wine, eat dishes without rice or wine to transmit HS-PDSCH (High Speed Physical Data Sharing Channel, high-speed physical data sharing channel) code word etc., all users compete and share these resources in the sub-district.Network side need determine can transmit data for which user in current TTI at each TTI, with which type of speed and distribute how many resources.The process that the user selects is determined by dispatching algorithm, dispatching algorithm is each user's calculating priority level, according to the priority in turn for each user distributes the transfer resource of eating dishes without rice or wine, use to low priority user then if on the basis of satisfying the high-priority users transmission requirement, there is surplus resources to reallocate.

In realizing process of the present invention, the inventor finds that there is following problem at least in prior art: it is on the basis of prioritization that existing resources is distributed, the resource priority allocation is its transmission data to high-priority users, and surplus resources is reallocated is its transmission data to low priority user.Resource allocation process is that serial is carried out, and takes turns flow distribution from high to low according to dispatching priority of users, up to resource exhaustion.

But because each user's channel condition difference, the strategy that adopts high-priority users to take all resources is not considered the difference of channel condition between the user, so can not maximize the throughput of sub-district.

Summary of the invention

The embodiment of the invention provides a kind of method and apparatus of multi-user's resource allocation, carries out resource allocation to realize the channel condition of taking all factors into consideration all users, makes the total amount of data maximum of transmission.

For achieving the above object, the embodiment of the invention provides a kind of method of multi-user's resource allocation on the one hand, comprising:

Determine to carry out a plurality of users' of resource allocation code assignment scheme, and determine the channel quality indicator (CQI) value of each user under every kind of code assignment scheme;

According to described CQI value, obtain each user's corresponding TBS with described definite each user's CQI value and code assignment scheme;

Obtain the total TBS that carries out all users of resource allocation under every kind of code assignment scheme, and the scheme of selecting the combination conduct of the CQI value of TBS correspondence maximum among the described total TBS and code assignment scheme to carry out resource allocation.

On the other hand, the embodiment of the invention also provides a kind of device of multi-user's resource allocation, comprising:

The code word determination module is used to determine carry out a plurality of users' of resource allocation code assignment scheme, is defined as carrying out the code word number that each user of resource allocation distributes;

Channel quality indicator (CQI) value determination module is used for determining the channel quality indicator (CQI) value of each user under every kind of code assignment scheme that described code word determination module determines;

Transmission block size TBS acquisition module is used to obtain each user's corresponding with definite each user's of described CQI value determination module CQI value TBS;

The Resource Allocation Formula determination module, the TBS that is used for each user of obtaining according to described TBS acquisition module obtains the total TBS that carries out all users of resource allocation under every kind of code assignment scheme, and the scheme of selecting the combination conduct of the CQI value of TBS correspondence maximum among the described total TBS and code assignment scheme to carry out resource allocation.

Compared with prior art, the embodiment of the invention has the following advantages: the embodiment of the invention determines to carry out a plurality of users' of resource allocation code assignment scheme, and then determine the CQI value of each user under every kind of code assignment scheme, then according to this CQI value, obtain each user's corresponding TBS with described CQI value, and then obtain the total TBS of all users under every kind of code assignment scheme, the scheme of selecting the combination conduct of the CQI value of TBS correspondence maximum among total TBS and code assignment scheme to carry out resource allocation.The embodiment of the invention has realized considering other users' channel condition in the time of for each user resource allocation when a plurality of users are carried out resource allocation, has made the total amount of data maximum of transmission.

Description of drawings

Fig. 1 is the flow chart of the method for embodiment of the invention multi-user resource allocation;

Fig. 2 is the flow chart of the method for a kind of multi-user's resource allocation of the embodiment of the invention;

Fig. 3 is the flow chart of the method for the another kind of multi-user's resource allocation of the embodiment of the invention;

Fig. 4 is the structure chart of the device of a kind of multi-user's resource allocation of the embodiment of the invention;

Fig. 5 is the structure chart of the device of the another kind of multi-user's resource allocation of the embodiment of the invention.

Embodiment

The embodiment of the invention provides a kind of method of multi-user's resource allocation, simultaneously for a plurality of users distribute the HSDPA transfer resource of eating dishes without rice or wine, considers that in resource allocation the different channel condition of multi-user makes the volume of transmitted data maximum that the multi-user is total.Different with the existing resources distribution method, the method for multi-user's resource allocation that the embodiment of the invention proposes has also been considered the conditions of demand of other users to resource simultaneously when being each user resource allocation.

As shown in Figure 1, the flow chart for the method for embodiment of the invention multi-user resource allocation can comprise:

Step S101 determines to carry out a plurality of users' of resource allocation code assignment scheme, and determines the CQI value of each user under every kind of code assignment scheme.

Wherein, the code assignment scheme of determining to carry out a plurality of users of resource allocation is specifically as follows: be defined as carrying out the code word number that each user of resource allocation distributes.For example: when there are 10 available codeword the sub-district, current when 2 users are carried out resource allocation, then possible code assignment scheme is as shown in table 1;

Table 1

Scheme number	k 1	k 2
			1	9	1
2	8	2
			3	7	3
4	6	4
			5	5	5
6	4	6
			7	3	7
8	2	8
			9	1	9

K wherein _iIt is the HS-PDSCH code word number that i user can use.

Need to prove, for more users the code assignment scheme can the rest may be inferred, enumerate no longer one by one herein.

Wherein, determine each user's CQI value under every kind of code assignment scheme mode can for:

Calculate the HS-PDSCH through-put power that each user distributes according to eat dishes without rice or wine through-put power, each user's the channel gain that carries out resource allocation and the code word number that distributes for each user of the total HS-PDSCH in sub-district;

For example: when the total HS-PDSCH in the sub-district through-put power of eating dishes without rice or wine is P _Total, i user's channel gain is λ _i, be that the code word number that i user distributes is k _iThe time, i the HS-PDSCH through-put power P that the user distributes _iFor:

$P_i=k_i\×[\frac{(P_{\mathrm{total}}-\underset{i=1}{\overset{N}{\mathrm{\Σ}}}(k_i*\frac{1}{{\mathrm{\λ}}_i}))}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{k}_i}-\frac{1}{{\mathrm{\λ}}_i}]$

Wherein, N is the number of users that carries out resource allocation.

Then, each user's of the HS-PDSCH transmit power calculation of the distributing HS-PDSCH through-put power correspondence of distributing CQI value according to each user.For example:

HS-PDSCH through-put power P when i user's distribution _iDecibel value be P _{I, dB}, the CQI value of i reporting of user is CQI _{I, report}The time, i user's of i user HS-PDSCH through-put power correspondence of distributing CQI value CQI then _iFor

CQI _i=CQI _{I, report}+ P _{I, dB}-P _CPICH-MPO, wherein P _CPICHBe the power of cell common pilots channel CPICH, MPO is for measuring power bias, and MPO can be the value of high-rise configuration.

In addition, also can adopt another kind of method to determine the CQI value of each user under every kind of code assignment scheme, be specifically as follows:

The traversal scope of each user's CQI value under default every kind of code assignment scheme, the maximum CQI value that the maximum user of CQI value that calculating reports can use, then according to the user of the CQI value maximum that reports can with maximum CQI value and the traversal scope of this CQI value user's that determines the CQI value maximum that reports CQI value.Be specifically as follows: the total HS-PDSCH in user, sub-district of the CQI value of selecting according to other users except that the maximum user of the CQI value that reports among a plurality of users that carry out resource allocation, the CQI value of other reporting of user, the CQI value maximum that the reports CQI value that the user of the described CQI value maximum that reports of power calculation of through-put power and sub-district CPICH (Common PilotChannel, Common Pilot Channel) can use of eating dishes without rice or wine.For example: suppose 2 users are carried out resource allocation, and the traversal scope of supposing CQI is 5, a maximum user of the CQI value that reports be m, and then other users are for example beyond known users m: during the CQI value of user i, the formula of the CQI value that calculating user m can use is as follows

${\mathrm{CQI}}_{m,\mathrm{Select}}={\mathrm{CQI}}_{m,\mathrm{report}}-(P_{\mathrm{cpich}}+\mathrm{MPO})+$

$\mathrm{lin}2\mathrm{db}(P_{\mathrm{total}}-\underset{i=1,i\≠m}{\overset{N}{\mathrm{\Σ}}}\mathrm{db}2\mathrm{lin}(P_{\mathrm{cpich}}+\mathrm{MPO}+{\mathrm{CQI}}_{i,\mathrm{Select}}-{\mathrm{CQI}}_{i,\mathrm{report}}))$

Wherein lin2db represents linear value is converted to the dB value, and db2lin represents the dB value to be converted to linear value, CQI _{I, Select}Be the CQI value that user i selects, CQI _{I, report}The CQI value that reports for user i.CQI in all users' selections except that user m _{I, Select}During for minimum value, the CQI that calculates _{M, Select}The maximum CQI value CQI that can use for user m _{M, max-Select}, the user's of the CQI value that the reports maximum of then determining CQI value can be CQI _{M, max-Select}, CQI _{M, max-Select}-1 ..., CQI _{M, max-Select}-5.

Then, determine to carry out the CQI value of other users except that the user of the described CQI value maximum that reports among a plurality of users of resource allocation according to the maximum user's of the CQI value that reports CQI value.Be specifically as follows: gross power is deducted the dump power that obtains behind the power that the maximum user of the CQI value that reports consumes, convert value, obtain the CQI value of other users except that the user of the described CQI value maximum that reports into CQI.For example: when 2 users are carried out resource allocation, and the traversal scope of CQI value is 5 o'clock, and then the CQI value that may select of another user outside the user m can be by with P _TotalDeduct the dump power of obtaining behind the power of user m consumption, convert, 6 kinds of selections are arranged at most, can be expressed as { CQI to the CQI value obtains _{I, Select}, CQI ' _{I, Select}, CQI ' " _{I, Select}... }.

Step S102 obtains each user's corresponding with each user's who determines CQI value TBS.

After having determined each user's CQI value, can obtain the TBS corresponding herein, by searching the CQI-TBS expansion table with each user's CQI value.This CQI-TBS expansion table can be as shown in table 2,

Table 2

Step S103 obtains the total TBS that carries out all users of resource allocation under every kind of code assignment scheme, and the scheme of selecting the combination conduct of the CQI value of TBS correspondence maximum among the described total TBS and code assignment scheme to carry out resource allocation.

And then can to adopt the code assignment scheme of maximum TBS correspondence be user's distribution codeword resource, distributes the HS-PDSCH through-put power according to the CQI value of this maximum TBS correspondence for the user.

The embodiment of the invention determines to carry out a plurality of users' of resource allocation code assignment scheme, and then determine the CQI value of each user under every kind of code assignment scheme, obtain each user's corresponding TBS then with described CQI value, TBS addition with each user of obtaining, obtain the total TBS of all users under every kind of code assignment scheme, thus the scheme of selecting among total TBS the combination conduct of the CQI value of maximum TBS correspondence and code assignment scheme to carry out resource allocation.Because TBS represents the size of the data volume that the user sends, when total TBS is maximum, the total amount of data maximum that a plurality of users send, therefore the embodiment of the invention has realized when a plurality of users are carried out resource allocation, consider other users' channel condition in the time of for each user resource allocation, make the total amount of data maximum of transmission.

As shown in Figure 2, the flow chart for the method for a kind of multi-user's resource allocation of the embodiment of the invention can comprise:

Step S201 determines to carry out a plurality of users' of resource allocation code assignment scheme.

For example: when there are 10 available codeword the sub-district, current when 2 users are carried out resource allocation, then possible code assignment scheme is as shown in table 1.

Step S202 obtains through-put power and the CQI value of each user under every kind of code assignment scheme.

Be specifically as follows:

A) according to formula

Calculation constant u, wherein P _TotalFor using the HS-PDSCH through-put power in the sub-district, N is the number of users that carries out resource allocation, λ _iBe i user's channel gain, k _iIt is the HS-PDSCH code word that i user can use.Wherein, i user's channel gain λ _iComputational methods can for:

According to the CQI value of reporting of user, obtain the SNR value corresponding with this CQI value.For Release 5 agreements, HSDPA user's CQI and the relational expression between the SNR are as follows:

SNR＝-4.5+CQI

Wherein, SNR and CQI are unit with dB.The pairing SNR of the CQI of reporting of user is that the user supposes that the HS-PDSCH transmitting power is P _CPICHDuring+MPO (Measure Power Offset, measure power bias), the SNR value of the HS-PDSCH that receives that estimates according to current channel condition, wherein P _CPICHBe the power of cell common pilots channel, MPO can be the power bias value of a high-rise configuration for measuring power bias, is unit with dB, is therefore deducted the power P of cell common pilots channel by the SNR that calculates _Cpich, deducting MPO again and can obtain this reporting of user CQI channel gain constantly, the channel gain that calculates is unit with dB, and then this channel gain is converted to linear value λ.

B) according to formula

Calculate is the HS-PDSCH through-put power that i user distributes, wherein λ _iIt is the linear value of i user's channel gain.

C) can calculate the CQI value that to select under this power according to the HS-PDSCH through-put power of distributing for the user.Be specially: CQI _{I, Select}=CQI _{I, report}+ P _{I, dB}-P _Cpich-MPO, wherein P _{I, dB}Be the HS-PDSCH through-put power P that distributes for i user _iThe dB value, CQI _{I, report}It is the CQI value of i reporting of user.

Step S203 obtains each user's corresponding with each user's who determines CQI value TBS, and obtains the total TBS that carries out all users of resource allocation under every kind of code assignment scheme.

Can be by the CQI value of selecting and code word by searching the pairing TBS of CQI value that the CQI-TBS expansion table can obtain this selection, wherein this CQI-TBS expansion table can be as shown in table 2.Be specially: TBS _{I, Select}=CQI-TBS expansion table (CQI _{I, Select}, k _i).

After obtaining each user's TBS, will carry out a plurality of users' of resource allocation TBS addition, can obtain the total TBS in sub-district under the current code word allocative decision, total TBS is

Step S204 selects the sub-district

A maximum set of code words allocative decision is as the final code assignment scheme of using.And according to this code assignment Scheme Choice multi-user's power allocation scheme and TBS, as the preferred version that carries out resource allocation for the multi-user.

The method of above-mentioned multi-user's resource allocation can be these user's allocation of transmission resources according to a plurality of users channel condition separately, thereby realize the allocation optimum of local resource, has improved the total volume of transmitted data in sub-district.The method of multi-user's resource allocation that the embodiment of the invention proposes can be applied to but be not limited to HSDPA Release 5, the single current scene of Release 7 64QAM and Release 7 MIMO (Multiple Input MultipleOutput, multiple-input and multiple-output).

As shown in Figure 3, be the flow chart of the method for the another kind of multi-user's resource allocation of the embodiment of the invention, the embodiment of the invention thinks that it is that example describes that 2 users distribute the HSDPA transfer resource of eating dishes without rice or wine, and the traversal scope of hypothesis CQI is 5, and the traversal scope of code word is 7.But the embodiment of the invention is not limited thereto, and being not limited only in actual applications is that 2 users distribute the HSDPA transfer resource of eating dishes without rice or wine.Specifically comprise:

Step S301 determines to carry out a plurality of users' of resource allocation code assignment scheme.Be specifically as follows:

A) the CQI value that the multi-user who carries out resource allocation is reported is arranged according to the size of CQI value.For example: the CQI value of a plurality of reporting of user is arranged according to descending order, and the total number of users that wherein carries out resource allocation is N, supposes that a maximum user of CQI value who reports among N the user is m.

B) all users beyond user m only distribute minimum code word number, when for example all users beyond the user m only distribute 1 code word, and the maximum available code word K of user m _{M, max-Select}=total code word number-(N-1);

According to the traversal scope of code word, can obtain user m is K selecting code word _{M, max-Select}, K _{M, max-Select}-1 ..., K _{M, max-Select}-7 o'clock, the code word combination that other users outside the user m may select.For example, when total code word number is 10, and when user m and these 2 users of user i were carried out resource allocation, possible code assignment scheme was as shown in table 3,

Table 3

Scheme number	User m	User i
			1	9	1
2	8	2
			3	7	3
4	6	4
			5	5	5
6	4	6
			7	3	7
8	2	8

Step S302 determines the CQI value of each user under every kind of code assignment scheme.

Particularly, can determine the CQI value of each user under every kind of code assignment scheme by following method:

A) determine the maximum CQI value that the maximum user of the CQI value that reports can use, then according to the user of the CQI value maximum that reports can with maximum CQI value and the traversal scope of this CQI value user's that determines the CQI value maximum that reports CQI value.

Suppose 2 users are carried out resource allocation, a maximum user of the CQI value that reports be m, then in addition during the CQI value of other users such as user i, can obtain the CQI value that user m can use at known users m by following method:

${\mathrm{CQI}}_{m,\mathrm{Select}}={\mathrm{CQI}}_{m,\mathrm{report}}-(P_{\mathrm{cpich}}+\mathrm{MPO})+$

$\mathrm{lin}2\mathrm{db}{(P_{\mathrm{total}}-\underset{i=1,i\≠m}{\overset{N}{\mathrm{\Σ}}}\mathrm{db}2\mathrm{lin}(P_{\mathrm{cpich}}+\mathrm{MPO}+{\mathrm{CQI}}_{i,\mathrm{Select}}-{\mathrm{CQI}}_{i,\mathrm{report}}))}^{,}$

Wherein lin2db represents linear value is converted to the dB value, and db2lin represents the dB value to be converted to linear value, CQI _{I, Select}Be the CQI value that user i selects, CQI _{I, report}The CQI value that reports for user i.CQI in all users' selections except that user m _{I, Select}During for minimum value, the CQI that calculates _{M, Select}The maximum CQI value CQI that can use for user m _{M, max-Select}, the user's of the CQI value that the reports maximum of then determining CQI value can be CQI _{M, max-Select}, CQI _{M, max-Select}-1 ..., CQI _{M, max-Select}-5, wherein the progression that reduces on the peaked basis of CQI of the CQI that selects of user m is that traversal scope by CQI limits.

B) determine to carry out the CQI value of other users except that the user of the described CQI value maximum that reports among a plurality of users of resource allocation according to the maximum user's of the CQI value that reports CQI value.For example: when 2 users are carried out resource allocation, and the traversal scope of CQI value is 5 o'clock, and the CQI value that another user outside the user m may select has 6 kinds at most, can be expressed as { CQI _{I, Select}, CQI ' _{I, Select}, CQI ' " _{I, Select}... }, as shown in table 3;

When between N user, carrying out resource allocation, if the CQI value that user m selects is CQI _{M, max-Select}, CQI _{M, max-Select}-1 ..., CQI _{M, max-Select}-5, then the CQI value that may select of other users outside the user m has Kind.

Step S303, the total TBS of all users under CQI value of obtaining in current selection and the code assignment scheme.

When two users carry out resource allocation, suppose that available code word number is 10, the traversal scope of CQI value is 5, the traversal scope of code word is 7, then Dui Ying CQI-TBS expansion table can be as shown in table 2,, be specially: TBS by searching the pairing TBS of CQI value that the CQI-TBS expansion table can obtain current selection by the CQI value of current selection and code word _{I, Select}=CQI-TBS expansion table (CQI _{I, Select}, K _{I, Select}), CQI wherein _{I, Select}Be the CQI value that user i selects, K _{I, Select}Code word number for user i selection.

Two user's data transmission quantities addition of resource allocation will be carried out, total TBS of these two users can be obtained.So the total TBS of all users is under the CQI value of current selection and the code assignment scheme

Under all possible CQI value and code assignment scheme, repeat above-mentioned steps, thereby draw under all possible CQI value and the code assignment scheme, carry out the total TBS of two users under corresponding scheme of resource allocation.

Step S304 selects in all possible CQI value and the code assignment scheme, carries out user's a kind of CQI value of total TBS maximum of resource allocation and the code assignment scheme scheme as the final resource allocation of selecting.

And then can to adopt the code assignment scheme of maximum TBS correspondence be user's distribution codeword resource, distributes the HS-PDSCH through-put power according to the CQI value of this maximum TBS correspondence for the user.

The embodiment of the invention is enumerated the possible resource allocation combination of multi-user within the specific limits, and the scheme as multi-user's resource allocation is made up in a kind of resource allocation of selecting TBS maximum total in these resource allocation combinations, because TBS represents the size of the data volume that the user sends, when total TBS is maximum, the total amount of data maximum that a plurality of users send, therefore the embodiment of the invention has realized when carrying out resource allocation, take all factors into consideration a plurality of users' channel condition, the total amount of data maximum that a plurality of users are sent.

As shown in Figure 4, the structure chart for the device of a kind of multi-user's resource allocation of the embodiment of the invention comprises:

Code word determination module 41 is used to determine carry out a plurality of users' of resource allocation code assignment scheme, is defined as carrying out the code word number that each user of resource allocation distributes;

CQI value determination module 42 is used for determining the CQI value of each user under every kind of code assignment scheme that code word determination module 41 determines;

TBS acquisition module 43 is used to obtain each corresponding user of each user's who determines with CQI value determination module 42 CQI value TBS;

Resource Allocation Formula determination module 44, be used for each user's that TBS acquisition module 43 is obtained TBS addition, obtain the total TBS that carries out all users of resource allocation under every kind of code assignment scheme, and the scheme of selecting among total TBS the combination conduct of the CQI value of maximum TBS correspondence and code assignment scheme to carry out resource allocation.And then can to adopt the code assignment scheme of maximum TBS correspondence be user's distribution codeword resource, distributes the HS-PDSCH through-put power according to the CQI value of this maximum TBS correspondence for the user.

Wherein, CQI value determination module 42 can comprise:

Power calculation submodule 421 is used for calculating the HS-PDSCH through-put power that each user distributes according to eat dishes without rice or wine through-put power, each user's channel gain and code word determination module 41 of the total HS-PDSCH in sub-district for the code word number that described each user distributes;

First determines submodule 422, each user's of the HS-PDSCH through-put power correspondence that the HS-PDSCH transmit power calculation of each user's distribution that is used for calculating according to power calculation submodule 421 is distributed CQI value.

In another embodiment of the device of multi-user's resource allocation of the present invention, as shown in Figure 5, CQI value determination module 42 can comprise:

The traversal scope is determined submodule 423, is used for determining the traversal scope of each user's CQI value under every kind of code assignment scheme that code word determination module 41 determines;

Maximum CQI value calculating sub module 424 is used to calculate the maximum CQI value that the user of the CQI value maximum that reports can use;

Second determines submodule 425, be used for the maximum user of the CQI value that reports calculated according to maximum CQI value calculating sub module 424 can with maximum CQI value and traversal scope determine that the traversal scope of the CQI value that submodule 423 is determined determines the user's of the CQI value maximum that reports CQI value, and determine to carry out the CQI value of other users except that the user of the CQI value maximum that reports among a plurality of users of resource allocation according to the user's of the CQI value maximum that reports CQI value.

Above-mentioned module can be distributed in a device, also can be distributed in multiple arrangement.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.

The device of multi-user's resource allocation that the embodiment of the invention provides, code word determination module 41 determines to carry out a plurality of users' of resource allocation code assignment scheme, and then CQI value determination module 42 is determined the CQI value of each user under every kind of code assignment scheme, TBS acquisition module 43 is by searching the CQI-TBS expansion table then, obtain each user's corresponding TBS with described CQI value, each user's that Resource Allocation Formula determination module 44 will obtain TBS addition, obtain the total TBS of all users under every kind of code assignment scheme, thus the scheme of selecting among total TBS the combination conduct of the CQI value of maximum TBS correspondence and code assignment scheme to carry out resource allocation.The embodiment of the invention has realized considering other users' channel condition in the time of for each user resource allocation when a plurality of users are carried out resource allocation, has made the total amount of data maximum of transmission.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize based on such understanding by the mode that software adds necessary general hardware platform, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.

More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (12)

1. the method for multi-user's resource allocation is characterized in that, comprising:

Determine to carry out a plurality of users' of resource allocation code assignment scheme, and determine the channel quality indicator (CQI) value of each user under every kind of code assignment scheme;

According to described CQI value, obtain each user's corresponding transmission block size TBS with described definite each user's CQI value and code assignment scheme;

Obtain the total TBS that carries out all users of resource allocation under every kind of code assignment scheme, and the scheme of selecting the combination conduct of the CQI value of TBS correspondence maximum among the described total TBS and code assignment scheme to carry out resource allocation.

2. the method for multi-user's resource allocation according to claim 1 is characterized in that, the described code assignment scheme of determining to carry out a plurality of users of resource allocation comprises:

Determine to carry out the code word number that each user of resource allocation distributes.

3. the method for multi-user's resource allocation according to claim 1 is characterized in that, and is described according to described CQI value, and the TBS that obtains each user corresponding with described definite each user's CQI value and code assignment scheme comprises:

According to described CQI value, search the CQI-TBS expansion table, obtain each user's corresponding TBS with described definite each user's CQI value.

4. as the method for multi-user's resource allocation as described in the claim 2, it is characterized in that, describedly determine that the CQI value of each user under every kind of code assignment scheme comprises:

Obtain the HS-PDSCH through-put power that described each user distributes according to eat dishes without rice or wine through-put power, described each user's channel gain and the code word number that distributes for described each user of the total high-speed physical data sharing channel HS-PDSCH in sub-district;

The HS-PDSCH through-put power of distributing according to described each user is determined described each user's the CQI value of the HS-PDSCH through-put power correspondence of described distribution.

5. as the method for multi-user's resource allocation as described in the claim 4, it is characterized in that, describedly eat dishes without rice or wine through-put power, described each user's channel gain and the code word number that distributes for described each user obtains the HS-PDSCH through-put power that described each user distributes and is according to the total HS-PDSCH in sub-district:

When the total HS-PDSCH in the sub-district through-put power of eating dishes without rice or wine is P _Total, i user's channel gain is λ _i, the code word number that distributes for described i user is k _iThe time, the HS-PDSCH through-put power P that described i user distributes _iFor

$P_i=k_i\×[\frac{(P_{\mathrm{total}}-\underset{i=1}{\overset{N}{\mathrm{\Σ}}}(k_i*\frac{1}{{\mathrm{\λ}}_i}))}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{k}_i}-\frac{1}{{\mathrm{\λ}}_i}],$ Wherein N is the number of users that carries out resource allocation.

6. as the method for multi-user's resource allocation as described in the claim 5, it is characterized in that described HS-PDSCH through-put power of distributing according to each user determines that described each user's the CQI value of the HS-PDSCH through-put power correspondence of described distribution is:

HS-PDSCH through-put power P when described i user distribution _iDecibel value be P _{I, dB}, the CQI value of described i reporting of user is CQI _{I, report}The time, described i the user's of the HS-PDSCH through-put power correspondence that described i user distributes CQI value CQIi is

CQI _i=CQI _{I, report}+ P _{I, dB}-P _CPICH-MPO, wherein P _CPICHBe the power of cell common pilots channel CPICH, MPO is for measuring power bias.

7. as the method for multi-user's resource allocation as described in the claim 2, it is characterized in that, describedly determine that the CQI value of each user under every kind of code assignment scheme comprises:

Obtain the maximum CQI value that the maximum user of the CQI value that reports can use;

According to the maximum user of the described CQI value that reports can with maximum CQI value and default every kind of code assignment scheme under each user's the traversal scope of CQI value determine the user's of the described CQI value maximum that reports CQI value, and determine to carry out the CQI value of other users except that the user of the described CQI value maximum that reports among a plurality of users of resource allocation according to the user's of the described CQI value maximum that reports CQI value.

8. as the method for multi-user's resource allocation as described in the claim 7, it is characterized in that, described obtain the maximum user of the CQI value that reports can with maximum CQI value comprise:

The total HS-PDSCH in user, sub-district of the CQI value of selecting according to other users except that the maximum user of the described CQI value that reports among a plurality of users that carry out resource allocation, the CQI value of described other reporting of user, the described CQI value maximum that the reports CQI value that the user of the described CQI value maximum that reports of power calculation of through-put power and cell common pilots channel CPICH can use of eating dishes without rice or wine;

When other users the maximum user select except that the described CQI value that reports among the described a plurality of users that carry out resource allocation CQI value during for minimum value, the user of the described CQI value maximum that reports can with the CQI value be maximum.

9. as the method for claim 1-8 multi-user's resource allocation as described in each, it is characterized in that the scheme that resource allocation is carried out in the combination conduct of the CQI value of maximum TBS correspondence and code assignment scheme among the described total TBS of described selection comprises:

Code assignment scheme according to the TBS correspondence of described maximum is user's distribution codeword resource, distributes the HS-PDSCH through-put power according to the CQI value of the TBS correspondence of described maximum for the user.

10. the device of multi-user's resource allocation is characterized in that, comprising:

The code word determination module is used to determine carry out a plurality of users' of resource allocation code assignment scheme;

Channel quality indicator (CQI) value determination module is used for determining the channel quality indicator (CQI) value of each user under every kind of code assignment scheme that described code word determination module determines;

Transmission block size TBS acquisition module is used to obtain each user's corresponding with definite each user's of described CQI value determination module CQI value TBS;

The Resource Allocation Formula determination module, the TBS that is used for each user of obtaining according to described TBS acquisition module obtains the total TBS that carries out all users of resource allocation under every kind of code assignment scheme, and the scheme of selecting the combination conduct of the CQI value of TBS correspondence maximum among the described total TBS and code assignment scheme to carry out resource allocation.

11. the device as multi-user's resource allocation as described in the claim 10 is characterized in that described CQI value determination module comprises:

The power calculation submodule is used for calculating the HS-PDSCH through-put power that described each user distributes according to the total high-speed physical data sharing channel HS-PDSCH in the sub-district code word number that each user distributes under the code assignment scheme that through-put power, described each user's channel gain and described code word determination module determine of eating dishes without rice or wine;

First determines submodule, described each user's of the HS-PDSCH through-put power correspondence of the described distribution of HS-PDSCH transmit power calculation that each user who is used for calculating according to described power calculation submodule distributes CQI value.

12. the device as multi-user's resource allocation as described in the claim 10 is characterized in that described CQI value determination module comprises:

The traversal scope is determined submodule, is used for determining the traversal scope of each user's CQI value under every kind of definite code assignment scheme of described code word determination module;

Maximum CQI value calculating sub module is used to calculate the maximum CQI value that the user of the CQI value maximum that reports can use;

Second determines submodule, be used for the maximum user of the described CQI value that reports calculated according to described maximum CQI value calculating sub module can with maximum CQI value and described traversal scope determine that the traversal scope of the CQI value that submodule is determined determines the user's of the described CQI value maximum that reports CQI value, and determine to carry out the CQI value of other users except that the user of the described CQI value maximum that reports among a plurality of users of resource allocation according to the user's of the described CQI value maximum that reports CQI value.

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