CN103152835A

CN103152835A - Method and system for estimating uplink sub-frame PUSCH (Physical Uplink Shared Channel) usable resource in LTE (Long Term Evolution) system

Info

Publication number: CN103152835A
Application number: CN201310102575XA
Authority: CN
Inventors: 孔健
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2013-03-27
Filing date: 2013-03-27
Publication date: 2013-06-12
Anticipated expiration: 2033-03-27
Also published as: CN103152835B

Abstract

The invention relates to the technical field of communications, and discloses a method for estimating the uplink sub-frame PUSCH (Physical Uplink Shared Channel) usable resource in an LTE (Long Term Evolution) system. The method comprises the following steps of: estimating the physical resource block PRB resource Spucch occupied by PUCCH (Physical Uplink Control Channel) so as to estimate the PUSCH usable PRB resource Spusch; estimating a user set possibly scheduled by an uplink sub-frame according to the PUSCH usable PRB resource Spusch; deleting the PRB resource occupied by user transmission ACK (Acknowledge Character) required PUCCH in the user set from the Spucch so as to obtain updated Spucch; and recalculating the PUSCH usable PRB resource Spusch according to the updated Spucch. The invention also discloses a system for estimating the uplink sub-frame PUSCH usable resource in the LTE system. The method and the system provided by the invention can accurately estimate the uplink sub-frame PUSCH usable resource, so that the uplink PRB resource is fully utilized.

Description

Evaluation method and the system of sub-frame of uplink PUSCH available resources in the LTE system

Technical field

The present invention relates to communication technical field, particularly evaluation method and the system of sub-frame of uplink PUSCH available resources in a kind of LTE system.

Background technology

Long Term Evolution (Long Term Evolution, LTE) Physical Resource Block of a sub-frame of uplink (Physical Resource Block in system, PRB) resource is mainly used in physical uplink control channel (Physical Uplink Control Channel, PUCCH) and Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH) transmission, PUCCH is used for transmission CQI(Channel Qualtity Indicator: the channel quality indication)/SR(Scheduling Request: dispatch request)/ACK(Acknowledgement: confirm) information, wherein ACK is the confirmation to descending PDSCH transmission.PUSCH is used for the upstream data of transmission user, also can carry simultaneously user's CQI/ACK information.It is unfixing that each subframe is used for the PUCCH channel number of transferring ACK, so the PRB that each sub-frame of uplink PUCCH takies also changes.So determine that a uplink subframe scheduling PUSCH can need at first to determine the PRB resource that this subframe PUCCH takies with the PRB resource.The agreement regulation, a user can only be transmitted one of PUCCH and PUSCH in same subframe, and (sub-frame of uplink can be used for passing PUCCH and/or PUSCH, PUCCH or PUSCH are the data/control informations that passes the user), if the user has PUSCH and PUCCH to transmit simultaneously, only transmit PUSCH, the ACK content of carrying on PUCCH can be with up by PUSCH.Before uplink scheduling, if a user namely has ACK to transmit, there is again upstream data will transmit (in the LTE system, upstream data can only transmit by PUSCH), base station dispatcher and that do not know the final scheduling of user is PUCCH or PUSCH, so the actual PRB resource that takies of the very difficult accurately final PUCCH of estimation of scheduler, the PRB resource of therefore transmitting for PUSCH is also just estimated inaccurate, easily causes the waste of up PRB resource.

At present, (PUSCH can use the PRB resource in other words to take the PRB resource for sub-frame of uplink PUCCH in the LTE system.Not taken the PRB resource by sub-frame of uplink PUCCH is PUSCH and can uses the PRB resource) estimation, following two schemes is generally arranged:

Scheme one estimates according to maximum PRB numbers that ACK may take the PRB resource that PUCCH finally takies.According to agreement, the PUCCH channel number that subframe may be transmitted can calculate according to formula, therefore, if a uncertain PUCCH finally can or can not dispatch on earth, just can estimate according to maximum possible, the resource that takies PRB except the PUCCH maximum possible just can be used for the PUSCH transmission.

Scheme two estimates according to the ACK that has dispatched the resource that PUCCH finally takies.This scheme hypothesis needs the user of transferring ACK at last all with the PUCCH transmission, estimates according to the PUCCH resource that the ACK that has dispatched takies the resource that final PUCCH takies, and remaining PRB resource just can be used for the PUSCH transmission.

For such scheme one, only need to calculate according to CFI configuration and the agreement formula of each subframe, very simple, but PUCCH resource estimation error ratio is larger.For example: a sub-frame of uplink does not have ACK will be transmitted, may not dispatch PUCCH, still estimate according to the possible maximum PRB number of PUCCH this moment, in fact these idle PRB are not taken by PUCCH, but can not be used for the PUSCH transmission, cause the significant wastage of PRB resource.

For such scheme two, more go a step further on the basis of scheme one, considered the PUCCH of actual schedule, for situation corresponding to top that example, owing to there is no before the ACK transmission, so just there is no PUCCH, therefore need not reserve the PRB resource to PUCCH, at this moment, PUSCH can use the more accurate of PRB resource estimation.But in some cases, this method of estimation also has certain error.For example: a sub-frame of uplink has a user's ACK to transmit, this user also has upstream data to dispatch simultaneously, employing scheme two, reserve the PRB resource will for this user's ACK transmission, and in fact this user will dispatch PUSCH certainly at this sub-frame of uplink, so ACK can send in PUSCH fully, do not need to reserve the PRB resource to PUCCH, so also can cause PUSCH to take the PRB resource estimation inaccurate.

Summary of the invention

The technical problem that (one) will solve

The technical problem to be solved in the present invention is: how to estimate exactly can use the PRB resource for sub-frame of uplink PUSCH in the LTE system.

(2) technical scheme

For solving the problems of the technologies described above, the invention provides the evaluation method of sub-frame of uplink PUSCH available resources in a kind of LTE system, comprise step:

Estimate the Physical Resource Block PRB resource S that PUCCH takies _Pucch, PUSCH can use PRB resource S with estimation _Pusch

Can use PRB resource S according to described PUSCH _PuschEstimate user's set that sub-frame of uplink may be dispatched;

From described S _PucchThe PRB resource that the required PUCCH of user's transferring ACK in the described user's set of middle deletion takies is with the S after being upgraded _Pucch

According to the S after upgrading _PucchRecomputate PUSCH and can use PRB resource S _Pusch

Wherein, the described PRB resource S that estimates that PUCCH takies _PucchMode be: determine according to the ACK that has dispatched the PRB resource S that PUCCH takies _Pucch

Wherein, describedly can use PRB resource S according to described PUSCH _PuschEstimate that user's set that sub-frame of uplink may be dispatched specifically comprises:

Estimate that according to the data volume of each dispatching priority of users, this less important transmission and the average SINR of channel this sub-frame of uplink will dispatch the user of PUSCH, make the final user who has dispatched PUSCH comprise the user that estimation will be dispatched PUSCH.

Wherein, from described S _PucchThe required PRB resource of ACK that user in the described user's set of middle deletion will be transmitted is with the S after being upgraded _PucchSpecifically comprise:

Travel through each user in described user's set, judge whether this user needs transferring ACK;

If need, from described S _PucchThe PRB resource that the required PUCCH of this user's transferring ACK of middle deletion takies.

The present invention also provides the estimating system of sub-frame of uplink PUSCH available resources in a kind of LTE system, comprising:

The resource estimation module is used for the Physical Resource Block PRB resource S that estimates that PUCCH takies _Pucch, PUSCH can use PRB resource S with estimation _Pusch

User's estimation module is used for can using PRB resource S according to described PUSCH _PuschEstimate user's set that sub-frame of uplink may be dispatched;

The resource updates module is used for from described S _PucchThe PRB resource that the required PUCCH of user's transferring ACK in the described user's set of middle deletion takies is with the S after being upgraded _Pucch

The available resources computing module is used for according to the S after upgrading _PucchRecomputate PUSCH and can use PRB resource S _Pusch

Wherein, described resource estimation module specifically is used for determining according to the ACK that has dispatched the PRB resource S that PUCCH takies _Pucch

Wherein, described user's estimation module specifically is used for estimating that according to the data volume of each dispatching priority of users, this less important transmission and the average SINR of channel this sub-frame of uplink will dispatch the user of PUSCH, makes the final user who has dispatched PUSCH comprise the user that estimation will be dispatched PUSCH.

Wherein, described resource updates module comprises:

The ACK judge module is used for traveling through each user that described user gathers, and judges whether this user needs transferring ACK;

The resource removing module is if be used for when this user needs transferring ACK from described S _PucchThe PRB resource that the required PUCCH of this user's transferring ACK of middle deletion takies.

(3) beneficial effect

User's set that the present invention may be scheduled by estimating sub-frame of uplink, delete the PRB resource that the PUCCH that wants the shared PRB resource of transferring ACK from prior estimation in this user set is taken, thereby can estimate relatively accurately the PRB resource that PUCCH takies, namely can calculate exactly sub-frame of uplink PUSCH and can use the PRB resource, to improve the utilance of sub-frame of uplink PRB.

Description of drawings

Fig. 1 is the evaluation method flow chart of sub-frame of uplink PUSCH available resources in a kind of LTE system of the embodiment of the present invention;

Fig. 2 is the estimating system structural representation of sub-frame of uplink PUSCH available resources in a kind of LTE system of the embodiment of the present invention.

Embodiment

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.

In the LTE system of the present embodiment, the evaluation method idiographic flow of sub-frame of uplink PUSCH available resources as shown in Figure 1, comprising:

Step S110 estimates the PRB resource S that PUCCH takies _Pucch, PUSCH can use PRB resource S with estimation _PuschNamely removing PUCCH from whole PRB resources and take the PRB resource, is to subtract each other on the PRB number on the one hand, will consider also that on the other hand concrete which PRB is taken by PUCCH, and can not be taken by PUSCH.In the present embodiment, suppose that ACK passes by PUCCH, dispatched in front descending PDSCH according to user of the ACK(that has dispatched, will send ACK at the sub-frame of uplink of agreement regulation) determine the PRB resource S that PUCCH takies _Pucch

Step S120 can use PRB resource S according to PUSCH _PuschEstimate that the user that sub-frame of uplink may be dispatched gathers U, namely these users will send PUSCH at this sub-frame of uplink.In the present embodiment, can be according to the data volume of each dispatching priority of users, this less important transmission and channel average signal with interference plus noise than (Signal to Interference plus Noise Ratio, SINR) estimate that this subframe will dispatch PUSCH user, here adopt the mode of conservative estimation, judge when guaranteeing can not occur estimating that the user that will dispatch PUSCH could not dispatch PUSCH at last, the user of the scheduling PUSCH that namely estimates gathers the subset that U may be the user list of final scheduling.Estimate that this user gathers the concrete steps of U as follows:

According to the dispatching priority of users that dispatching algorithm is determined, according to priority from high to low, process successively the user, for each user,

Step 1: the data volume to be sent according to this user and the average SINR of channel estimate the PRB number that these user's needs use.The average SINR of channel is corresponding to spectrum efficiency, and the PRB number that the user need to take equals this user data volume to be sent divided by spectrum efficiency.

Step 2: can use PRB resource S at PUSCH _PuschIn select the PRB resource of respective number for this user.This user enters user's set that this sub-frame of uplink may be dispatched simultaneously;

Step 3: upgrade PUSCH and can use PRB resource S _Pusch

Step 4: remove the shared PRB resource S of user in this user's set _PuschOutward, if PUSCH can use PRB resource S _PuschIn remain in addition the PRB resource, continue the lower next user of processing, repeating step 1～4; Otherwise flow process finishes, and obtains user's set that this sub-frame of uplink may be dispatched this moment.

Step S130 is from S _PucchThe PRB resource that the required PUCCH of user's transferring ACK in middle deletion user set takies is with the S after being upgraded _PucchConcrete by each user in traversal user set, judge whether this user needs transferring ACK; If need, from S _PucchThe PRB resource that this user of middle deletion wants the required PUCCH of transferring ACK to take is until traveled through all users in user set.

Step S140 is according to the S after upgrading _PucchRecomputate PUSCH and can use PRB resource S _PuschCan just can carry out later formal up PUSCH scheduling with the PRB resource quantity accurately estimating PUSCH, be each user assignment PRB resource accurately.

When only having a user's ACK, a sub-frame of uplink to transmit, this user also has upstream data to dispatch simultaneously, adopt said method, can be judged as this user of step S120 and can dispatch PUSCH, therefore will enter this sub-frame of uplink wants dispatched users set U, subsequently in step S130, transmitting the PRB resource that the required PUCCH of this ACK takies will be deleted, like this in step S140, for this user, this sub-frame of uplink does not just have ACK to need transmission, and the PUSCH available resources are exactly whole PRB resources (not considering that CQI/SR takies the situation of PRB).Just can take whole resources when follow-up this user formally carries out uplink scheduling, thereby realize taking full advantage of of up PRB resource.

The present invention also provides the estimating system of sub-frame of uplink PUSCH available resources in a kind of LTE system, as shown in Figure 2, comprising:

Resource estimation module 210 is used for the Physical Resource Block PRB resource S that estimates that PUCCH takies _Pucch, PUSCH can use PRB resource S with estimation _Pusch

User's estimation module 220 is used for can using PRB resource S according to described PUSCH _PuschEstimate user's set that sub-frame of uplink may be dispatched;

Resource updates module 230 is used for from described S _PucchThe PRB resource that the required PUCCH of user's transferring ACK in the described user's set of middle deletion takies is with the S after being upgraded _Pucch

Available resources computing module 240 is used for according to the S after upgrading _PucchRecomputate PUSCH and can use PRB resource S _Pusch

Wherein, described resource estimation module 210 is concrete for determining according to the ACK that has dispatched the PRB resource S that PUCCH takies _Pucch

Wherein, described user's estimation module 220 specifically estimates that according to the data volume of each dispatching priority of users, this less important transmission and the average SINR of channel this sub-frame of uplink will dispatch the user of PUSCH, makes the final user who has dispatched PUSCH comprise the user that estimation will be dispatched PUSCH.

Wherein, described resource updates module 230 comprises:

ACK judge module 231 is used for traveling through each user that described user gathers, and judges whether this user needs transferring ACK;

Resource removing module 232 is if be used for when this user needs transferring ACK from described S _PucchThe PRB resource that the required PUCCH of this user's transferring ACK of middle deletion takies.

Above execution mode only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims

1. the evaluation method of sub-frame of uplink PUSCH available resources in a LTE system, is characterized in that, comprises step:

2. the evaluation method of sub-frame of uplink PUSCH available resources in LTE as claimed in claim 1 system, is characterized in that the PRB resource S that described estimation PUCCH takies _PucchMode be: determine according to the ACK that has dispatched the PRB resource S that PUCCH takies _Pucch

3. the evaluation method of sub-frame of uplink PUSCH available resources in LTE as claimed in claim 1 system, is characterized in that, describedly can use PRB resource S according to described PUSCH _PuschEstimate that user's set that sub-frame of uplink may be dispatched specifically comprises:

4. the evaluation method of sub-frame of uplink PUSCH available resources in as described in any one in claim 1～3 LTE system, is characterized in that, from described S _PucchThe required PRB resource of ACK that user in the described user's set of middle deletion will be transmitted is with the S after being upgraded _PucchSpecifically comprise:

5. the estimating system of sub-frame of uplink PUSCH available resources in a LTE system, is characterized in that, comprising:

6. the estimating system of sub-frame of uplink PUSCH available resources in LTE as claimed in claim 5 system, is characterized in that, described resource estimation module specifically is used for determining according to the ACK that has dispatched the PRB resource S that PUCCH takies _Pucch

7. the estimating system of sub-frame of uplink PUSCH available resources in LTE as claimed in claim 5 system, it is characterized in that, described user's estimation module specifically is used for estimating that according to the data volume of each dispatching priority of users, this less important transmission and the average SINR of channel this sub-frame of uplink will dispatch the user of PUSCH, makes the final user who has dispatched PUSCH comprise the user that estimation will be dispatched PUSCH.

8. the estimating system of sub-frame of uplink PUSCH available resources in as described in any one in claim 5～7 LTE system, is characterized in that, described resource updates module comprises: