CN102149204A - Method and system for scheduling channel resources and base station - Google Patents
Method and system for scheduling channel resources and base station Download PDFInfo
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- CN102149204A CN102149204A CN2011100344636A CN201110034463A CN102149204A CN 102149204 A CN102149204 A CN 102149204A CN 2011100344636 A CN2011100344636 A CN 2011100344636A CN 201110034463 A CN201110034463 A CN 201110034463A CN 102149204 A CN102149204 A CN 102149204A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
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- H04W16/28—Cell structures using beam steering
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Abstract
The embodiment of the invention discloses a method and system for scheduling channel resources and a base station, which are applied to the technical field of communication. In the embodiment, the method comprises the steps of pre-scheduling user equipment corresponding to a downlink resource in at least one subframe by a base station first before scheduling an uplink resource so as to obtain pre-scheduled user equipment information, wherein the pre-scheduled user equipment information is referred to during scheduling the uplink resource; sending the scheduled uplink resource information to the scheduled user equipment by uplink authorization; calculating a downlink transmission weight of a NF (Null Forming) after receiving uplink channel information of the user equipment; scheduling a downlink frequency band of the user equipment to be a frequency band as same as the uplink channel information sent by the user equipment while at least one pre-scheduled subframe comes; and sending the downlink resource information to the user equipment according to the calculated NF downlink transmission weight. According to the method in the embodiment, the interference between cells can be reduced and an effect of the NF on interference inhibition is improved.
Description
Technical field
The present invention relates to communication technical field, particularly dispatch channel resource method, system and base station.
Background technology
At existing Long Term Evolution plan (Long Term Evolution, LTE) in the communication network, wave beam forming (Beam Forming is adopted in the base station, when BF) technology sends downlink data, can improve the received power of subscriber equipment, but this technology there be not the interference of consideration to the adjacent area subscriber equipment.And employing zero sunken figuration (Null Forming, NF) technology can reduce presence of intercell interference, particularly, realizes by following method:
The base station is after receiving the up channel data, send the emission value of down channel data according to weights formula (1) calculation base station of NF, like this when data are launched according to the emission value that calculates in the base station, the main lobe of the transmitted waveform subscriber equipment that aims at the mark then, and allow zero to fall into the disturbed subscriber equipment of aligning, thereby reduce the interference of minizone.
H wherein
1For arriving the channel information of target UE, h in base station in the up channel data that receive
iArrive the channel information of interference user equipment for base station in the up channel data that receive, σ is for receiving noise, and N is the interference user number of devices.
For example, with reference to shown in Figure 1, suppose that subscriber equipment 1 access base station 1 communicates, and subscriber equipment 2 access base stations 2 communicate.When base station 1 when up channel receives data, can receive the up channel data that a plurality of subscriber equipmenies send, comprise the up channel data (dotted arrow direction among the figure) that interference user equipment 2 sends; When the emission value that calculates according to formula (1) sent data, the main lobe of transmitted waveform was aimed at subscriber equipment 1, and zero of formation falls into aims at subscriber equipment 2, so just can lower the interference to subscriber equipment 2.
The upstream data of reception calculates because the base station is based on when calculating emission value, when guaranteeing that the base station sends downlink data according to this emission value, the interference that the interference user equipment of energy inhibition transmission upstream data is subjected to, the up-downgoing resource of interference user equipment need be scheduled on the identical frequency band.A plurality of but if the corresponding interference user equipment of the upstream data that the base station receives has, these interference user equipment not necessarily can be scheduled for constantly at the descending scheduling of base station, so just can not reach the inhibition effects of jamming.
Summary of the invention
The embodiment of the invention provides dispatch channel resource method, system and base station, has improved the inhibition effects of jamming.
The embodiment of the invention provides a kind of dispatch channel resource method, comprising:
Subscriber equipment to downlink resource correspondence at least one subframe carries out pre-scheduling, obtains the user equipment information of pre-scheduling;
Dispatch corresponding ascending resource according to the user equipment information of described pre-scheduling, and the ascending resource information of described scheduling is sent to the subscriber equipment that is scheduled by uplink authorization;
When receiving the uplink channel information that described subscriber equipment sends according to described uplink authorization, calculate the weight of downgoing emission of zero sunken figuration NF according to described uplink channel information;
According to the user equipment information and the described ascending resource message scheduling downlink resource of described pre-scheduling, and at the weight of downgoing emission of described at least one subframe, the downlink resource information of described scheduling is sent to described subscriber equipment according to described NF; The downstream bands of each subscriber equipment that is scheduled is identical with the frequency band that respective user equipment sends described uplink channel information in the wherein said downlink resource information.
The embodiment of the invention provides a kind of base station, comprising:
The pre-scheduling unit is used for the subscriber equipment of at least one subframe downlink resource correspondence is carried out pre-scheduling, obtains the user equipment information of pre-scheduling;
The uplink scheduling unit is used for dispatching corresponding ascending resource according to the user equipment information of described pre-scheduling unit pre-scheduling, and the ascending resource information of described scheduling is sent to the subscriber equipment that is scheduled by uplink authorization;
Weight calculation unit is used for calculating the weight of downgoing emission of zero sunken figuration NF according to described uplink channel information when receiving the uplink channel information that described subscriber equipment sends according to described uplink authorization;
The descending scheduling unit, be used for according to the user equipment information of described pre-scheduling unit pre-scheduling and the ascending resource message scheduling downlink resource of uplink scheduling cell scheduling, and the weight of downgoing emission of the NF that calculates according to described weight calculation unit in described at least one subframe, the downlink resource information of described scheduling is sent to described subscriber equipment; The downstream bands of each subscriber equipment that is scheduled is identical with the frequency band that respective user equipment sends described uplink channel information in the wherein said downlink resource information.
The embodiment of the invention provides a kind of dispatch channel resource system, above-mentioned base station.
In the present embodiment, pre-scheduling is carried out to the subscriber equipment of downlink resource correspondence at least one subframe earlier in the base station, obtain the user equipment information of pre-scheduling, to ascending resource scheduling the time,, and behind uplink scheduling, ascending resource information is sent to the subscriber equipment that is scheduled by uplink authorization with reference to the user equipment information of pre-scheduling; Receive the uplink channel information of subscriber equipment transmission when the base station after, calculate the weight of downgoing emission of NF; When at least one subframe of pre-scheduling arrives, the downstream bands scheduling of each subscriber equipment is being sent the identical frequency band of uplink channel information with respective user equipment, the weight of downgoing emission according to the NF that calculates sends to subscriber equipment with downlink resource information.Send the identical frequency band of uplink channel information by the downstream bands of subscriber equipment is dispatched with respective user equipment in the present embodiment, guaranteeing the zero sunken interference user equipment of aiming at of the information generation of base station down emission, reducing the interference of minizone; And by when ascending resource scheduling with reference to the user equipment information of pre-scheduling, guaranteed the subscriber equipment unanimity that up-downgoing is scheduled, thereby made disturbed subscriber equipment be scheduled for descending, suppress effects of jamming thereby improved NF.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation that NF suppresses interference user equipment;
Fig. 2 is the flow chart of a kind of dispatch channel resource method of providing of the embodiment of the invention;
Fig. 3 is the structural representation of channel transmission data subframe in the base station that provides of the embodiment of the invention;
Fig. 4 is dispatch channel resource method that the embodiment of the invention provides is compared parametric gain with existing method a schematic diagram;
Fig. 5 is the method flow diagram that downlink resource relative user equipment information at least one subframe is carried out pre-scheduling that the embodiment of the invention provides;
Fig. 6 is the structural scheme of mechanism of another kind of channel transmission data subframe in the base station that provides of the embodiment of the invention;
Fig. 7 is the structural representation of a kind of base station of providing of the embodiment of the invention;
Fig. 8 is the structural representation of the another kind of base station that provides of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of dispatch channel resource method, flow chart as shown in Figure 2, the system that the method for present embodiment is suitable for comprises plural base station, and each base station all is to carry out scheduling of resource according to the method for present embodiment, comprising:
101, the subscriber equipment (UE) of downlink resource correspondence at least one subframe is carried out pre-scheduling, obtain the user equipment information of pre-scheduling;
Be appreciated that, the proportioning of the channel transmission data subframe of base station is fixed, here at least one subframe is that the base station receives any or a plurality of subframe that downlink resource is arranged after the subframe of scheduled user's equipment upstream data, and the base station receives the subframe of upstream data and the restriction relation of this at least one subframe can be preset in the base station, and the content of concrete restriction relation is not construed as limiting the invention.
For example, as shown in Figure 3, in the channel transmission data subframe of base station, some subframe has only up (UL) resource, such as the #n subframe; Some subframe has only descending (DL) resource, such as #z and #x subframe; Some subframe is the existing up downlink resource that has again of special subframe (SP), such as #y subframe (subframe is not expressed in the drawings except that #m, n, z, x and y).The base station receives the upstream data of subscriber equipment in the #n subframe, the subscriber equipment of downlink resource correspondence in the subframe (such as the #z subframe) of base station after can pre-scheduling #n subframe then, the subscriber equipment of downlink resource correspondence in two subframes (such as #n and #x subframe) after also can pre-scheduling #n subframe.
The user equipment information of the downlink resource correspondence of concrete pre-scheduling can comprise: number of resources that the identification information of the subscriber equipment that is scheduled and each user's equipment downward are required or the like can also comprise the precedence information of the subscriber equipment that is scheduled.The user equipment information of these pre-schedulings can be service quality (the Quality of Service of base station according to the subscriber equipment that is covered, QoS) (or channel quality information), service buffer and professional required information such as number of resources, calculate according to the algorithm criterion that presets, here the algorithm criterion that presets can be the technological means that those skilled in the art use always, does not give unnecessary details at this.
Wherein the service buffer of subscriber equipment should be the current service buffer of subscriber equipment, and current subframe is subtracted each other and obtained to the be scheduled stock number of distributing of this subscriber equipment between the subframe (being at least one subframe) of pre-scheduling.
102, dispatch corresponding ascending resource according to the user equipment information of pre-scheduling, and the ascending resource information of scheduling is sent to the subscriber equipment that is scheduled by uplink authorization (UL Grant);
When carrying out ascending resource scheduling, the base station can be dispatched according to the user equipment information of pre-scheduling, the identification information and the required number of resources of each user's equipment downward that comprise the subscriber equipment that is scheduled in the user equipment information such as pre-scheduling, then when uplink scheduling, determine the position (such as subscriber equipment which frequency band in up channel send data) of these subscriber equipmenies that are scheduled in up channel, and determine that the number of resources that each subscriber equipment that is scheduled takies correspondingly is this user's equipment downward resource requirement number of pre-scheduling in up channel.
The identification information and the required number of resources of each user's equipment downward that in the user equipment information of pre-scheduling, not only comprise the subscriber equipment that is scheduled, the priority that also comprises these subscriber equipmenies, then when uplink scheduling, need determine the priority that these subscriber equipment ascending resources distribute according to priority.
After uplink scheduling is intact, the ascending resource information of dispatching is correspondingly sent to the subscriber equipment that is scheduled by uplink authorization.
103, when the base station receives subscriber equipment according to the uplink channel information that uplink authorization sends, calculate the weight of downgoing emission of NF according to uplink channel information;
Be appreciated that after subscriber equipment receives uplink authorization, can uplink channel information be sent to the base station according to the ascending resource information of base station mandate.In the uplink channel information that the base station receives except the information of the subscriber equipment of this base station scheduling, the uplink channel information that also has some other interference user equipment, the base station is then according to these uplink channel information, and above-mentioned NF weights computing formula (1) is calculated the weight of downgoing emission of NF.
For example, with reference to shown in Figure 3, suppose that the base station by behind the uplink scheduling of step 102, sends uplink authorization to the subscriber equipment that is scheduled in the #m subframe; When the base station receives the uplink channel information that subscriber equipment sends in the #n subframe, such as in uplink channel information, comprising demodulated reference signal (DemodulationReference Symbol, DMRS), can also comprise reference information (Sounding ReferenceSymbol, the information such as SRS) surveyed; When the base station after the #n subframe receives uplink channel information, calculate the weight of downgoing emission of NF according to formula (1).
104, according to the user equipment information of pre-scheduling and the ascending resource message scheduling downlink resource of scheduling, and, the downlink resource information of dispatching is sent to subscriber equipment at the weight of downgoing emission of at least one subframe according to NF; Wherein the downstream bands of each subscriber equipment that is scheduled is identical with the frequency band that respective user equipment sends uplink channel information in the downlink resource information.
When the subframe of pre-scheduling arrives in step 101, the base station is when carrying out the scheduling of downlink resource, the resource frequency band scheduling that subscriber equipment need be received descending channel information sends on the frequency band of uplink channel information in respective user equipment, and sends the downlink resource information of dispatching in this step to subscriber equipment according to the weight of downgoing emission that calculates in the step 103.What guaranteed like this to produce in the descending channel information of base station zero falls into and aims at interference user equipment, can reduce the interference of minizone.
For example, with reference to shown in Figure 3, suppose that the base station carries out pre-scheduling to the subscriber equipment of downlink resource correspondence in the #z subframe when pre-scheduling, then after the #n subframe receives the uplink channel information of subscriber equipment, calculated the emission value of NF, when the #z subframe arrived, the base station sent downlink resource information to subscriber equipment according to the emission value of NF.
Need to prove, owing to comprised the uplink channel information of other interference user equipment in the uplink channel information that the base station receives in step 103, illustrate other base stations at uplink scheduling these interference user equipment, and the uplink scheduling of other base stations is the user equipment informations with reference to the downlink resource correspondence of pre-scheduling, then be bound to be dispatched to these interference user equipment, improved NF well and suppressed effects of jamming in other base stations descending.
As seen, in the present embodiment, pre-scheduling is carried out to the subscriber equipment of downlink resource correspondence at least one subframe earlier in the base station, obtain the user equipment information of pre-scheduling, when being dispatched, ascending resource, and the ascending resource information of scheduling sent to the subscriber equipment that is scheduled by uplink authorization with reference to the user equipment information of pre-scheduling; After the uplink channel information that receives the subscriber equipment transmission, calculate the weight of downgoing emission of NF; When at least one subframe of pre-scheduling arrives, the downstream bands scheduling of each subscriber equipment is being sent the identical frequency band of uplink channel information with respective user equipment, the weight of downgoing emission according to the NF that calculates sends to subscriber equipment with downlink resource information.Send the identical frequency band of uplink channel information by the downstream bands of each subscriber equipment is dispatched with respective user equipment in the present embodiment, guaranteeing the zero sunken interference user equipment of aiming at of the information generation of base station down emission, reducing the interference of minizone; And by when uplink scheduling with reference to the user equipment information of pre-scheduling, guaranteed the subscriber equipment unanimity that up-downgoing is scheduled, thereby made disturbed subscriber equipment be scheduled for descending, suppress effects of jamming thereby improved NF.
With reference to shown in Figure 4, for the dispatch channel resource method that adopts the embodiment of the invention is compared with adopting existing method, the gain of the sub-district average throughput in the embodiment of the invention is 11.1%, and the gain of edge customer throughput is 58.2%, and the method for the visible embodiment of the invention can have been improved existing NF well and suppress effects of jamming.
With reference to shown in Figure 5, in a specific embodiment, the base station in carrying out above-mentioned steps 101 pre-scheduling and when obtaining the user equipment information of pre-scheduling, can realize according to following step:
A: the priority of calculating the subscriber equipment that covers according to the service quality of the subscriber equipment that the base station covered or channel quality information;
When calculating priority level, multiple computational methods can be arranged, below think the explanation of fair and just (ProportionalFair) dispatching algorithm and max carrier to interference (MAX C/I) dispatching algorithm example:
For straight fair and just dispatching algorithm, be the priority value that calculates subscriber equipment according to following priority formula (2):
Wherein, R
I_max(t) be at t constantly, the peak transfer rate that the subscriber equipment present position is supported is that the qos parameter according to subscriber equipment obtains; r
i(t) the expression subscriber equipment scheduling rates that arrives of a period of time real income in front.
For the max carrier to interference dispatching algorithm, directly (Transmission TimeInterval, channel quality indication (CQI) is sorted in the subscriber equipment that receives in the TTI) report, obtains the priority of subscriber equipment with each Transmission Time Interval.
B, according to the service buffer and the professional required number of resources of the subscriber equipment that covers, determine the identification information and the descending resource requirement number of the subscriber equipment that is scheduled; Wherein service buffer is the current service buffer of subscriber equipment that covers, and current subframe is subtracted each other and obtained to the be scheduled stock number of distribution of the subscriber equipment that covers between described at least one subframe.
Each professional required satisfied speed difference in the subscriber equipment, then required number of resources is also different: could normally move such as reach the certain guarantee bit rate for assurance bit rate (GBR) service needed in the LTE business, need a number of resources this moment; Only need guarantee that being no more than gathering maximum bit rate (AMBR) gets final product and the non-assurance bit rate (Non-GBR) in the LTE business is professional, this moment only need b number of resources.
But the service buffer of subscriber equipment can be constrained to the number of resources of this user equipment allocation, if the service buffer of subscriber equipment lacks than this user apparatus service resource requirement number, the descending resource requirement number that then is this subscriber equipment pre-scheduling is identical with service buffer, service buffer such as subscriber equipment is 10 number of resources, and this user apparatus service resource requirement number is 12, then is 10 number of resources of this subscriber equipment pre-scheduling.
Being appreciated that the subscriber equipment of determining in step B that is scheduled can be a subscriber equipment all in the priority of calculating in the steps A, also can be certain customers' equipment wherein.
In another specific embodiment, asymmetric on the channel of up-downgoing for some business datum, not equal such as the number of resources that up-downgoing is required, during uplink scheduling in execution in step 102, need the information of elder generation according to the subscriber equipment that is scheduled, such as current service buffer and professional required information such as number of resources, calculate the up required number of resources of the subscriber equipment that is scheduled; The up resource requirement number that will calculate then and the descending resource requirement number of pre-scheduling compare, if less than, the up code check (being the speed of up transmission information) or up filling (padding) information that then need to determine respective user equipment make up actual resource requirement number equate with the descending resource requirement number of pre-scheduling, and the descending code check of the subscriber equipment of this low pre-scheduling of will begging to surrender promotes the ascending resource number of this user equipment allocation; Or promote the ascending resource number of this user equipment allocation by filling information.
Wherein, the method of base station when calculating the up required number of resources of subscriber equipment is similar with the method for determining descending resource requirement number in above-mentioned steps B, just wherein use a parameter difference, promptly when the up resource requirement of calculating is counted, use the current service buffer of subscriber equipment.
When counting greater than the descending resource requirement of pre-scheduling for the up resource requirement number of the subscriber equipment that calculates, when the ascending resource scheduling of step 102, for the up resource requirement number of this dispatching user facility for calculating the up resource requirement number of this subscriber equipment; And when carrying out the scheduling of downlink resource in step 104, the descending resource requirement number of dispatching for respective user equipment is the up resource requirement number that calculates.
In another specific embodiment, when carrying out above-mentioned steps 103, if comprise DRMS in the uplink channel information that the base station receives in sub-frame of uplink, then carry out channel estimating and obtain h in the formula (1), and calculate the weight of downgoing emission of NF according to formula (1) according to the DRMS parameter in the uplink channel information that receives; Then when the scheduling downlink resource of execution in step 104, the downstream bands of each subscriber equipment that is scheduled is dispatched on the frequency band of the up transmission of respective user equipment DMRS, and on can the priority scheduling down channel with the identical frequency band of up reception DMRS, other frequency bands on the dispatching downlink channel and then.Like this owing to be to support what single user received when receiving DMRS, then the quantity of interference user equipment will reduce when calculating the weight of downgoing emission of NF, can guarantee that more these interference user equipment can be scheduled for descending, suppress effects of jamming thereby promoted NF.
Need to prove,, then can on the frequency band that receives SRS, calculate the weight of downgoing emission of BF if in the uplink channel information that receives SRS is arranged; Then asymmetric on the channel of up-downgoing for business datum, such as the number of resources in user's equipment downward resource requirement number and the uplink scheduling information when inequality, when sending downlink resource information to subscriber equipment, can appear at and on the frequency band that has on the down channel (such as first frequency band), not have corresponding NF weight of downgoing emission, when then the base station sends downlink resource information on these frequency bands, can downlink resource information be sent to subscriber equipment according to the weight of downgoing emission of the BF that calculates.
Below with a concrete Application Example dispatching method of the embodiment of the invention is described, in the present embodiment the structure of the channel transmission data subframe of base station as shown in Figure 6, the dispatch channel resource method comprises:
1, after pre-scheduling is carried out to the subscriber equipment of downlink resource correspondence in the #Z subframe in advance in the base station; Again according to the user equipment information of pre-scheduling dispatching uplink resource correspondingly, and the ascending resource information of scheduling is sent to the subscriber equipment that is scheduled by uplink authorization in the #M subframe; When the base station receives uplink channel information in the #X subframe, calculate the weight of downgoing emission of NF according to uplink channel information; Last base station is according to the user equipment information of pre-scheduling, the ascending resource message scheduling downlink resource of scheduling, and in the #Z subframe according to the weight of downgoing emission that calculates, downlink resource information is sent to subscriber equipment.Wherein the downstream bands of each subscriber equipment that is scheduled is identical with the frequency band that respective user equipment sends uplink channel information.
2, after pre-scheduling is carried out to the subscriber equipment of downlink resource correspondence in #W and the #D subframe in advance in the base station; Again according to the user equipment information of pre-scheduling dispatching uplink resource correspondingly, and the ascending resource information of scheduling is sent to the subscriber equipment that is scheduled by uplink authorization in the #N subframe; When the base station receives uplink channel information in the #Y subframe, calculate the weight of downgoing emission of NF according to uplink channel information; Last base station is according to the user equipment information of pre-scheduling, the ascending resource message scheduling downlink resource of scheduling, and in #W and #D subframe according to the weight of downgoing emission that calculates, downlink resource information is sent to subscriber equipment.Wherein the downstream bands of each subscriber equipment that is scheduled is identical with the frequency band that respective user equipment sends uplink channel information.
Need to prove, in order to guarantee after the base station is receiving the uplink channel information of subscriber equipment, have sufficient time to calculate the weight of downgoing emission of NF, then the base station receives the number of sub frames that needs to be separated by and preset between the corresponding subframe of uplink channel information and the subframe that sends downlink resource information, and this with regard to the subframe that needs the base station pre-scheduling is: the base station receives the corresponding subframe of uplink channel information and adds the number of sub frames that presets any or a plurality of subframe that downlink resource is arranged afterwards.
The embodiment of the invention provides a kind of base station, and structural representation comprises as shown in Figure 7:
If the user equipment information of pre-scheduling comprises the identification information and the required number of resources of each user's equipment downward of subscriber equipment, then uplink scheduling unit 20 is when carrying out uplink scheduling, can determine the positional information of these subscriber equipmenies that are scheduled in up channel, and the number of resources that the subscriber equipment of determining to be scheduled takies is the descending resource requirement number of respective user equipment in up channel;
If also comprise the priority of the subscriber equipment that is scheduled in the user equipment information of pre-scheduling, then the priority that the subscriber equipment ascending resource distributes can also be determined according to the priority of the subscriber equipment that is scheduled in uplink scheduling unit 20.
Here at least one subframe can add any or a plurality of subframe that downlink resource is arranged after the number of sub frames that presets for the subframe that: base station receives the uplink channel information correspondence.
And if comprise demodulated reference signal DMRS in the uplink channel information of weight calculation unit 30 receptions, descending scheduling unit 40 is that the downstream bands of each subscriber equipment that is scheduled is dispatched on the frequency band of the up reception of respective user equipment DMRS when the dispatching downlink resource.
In the base station in the present embodiment, pre-scheduling unit 10 carries out pre-scheduling to downlink resource relative user equipment at least one subframe earlier, obtain the user equipment information of pre-scheduling, when uplink scheduling unit 20 user equipment information with reference to pre-scheduling when ascending resource is dispatched, and with the scheduling ascending resource information send to the subscriber equipment that is scheduled by uplink authorization; Receive the uplink channel information of subscriber equipment transmission when weights computing unit 30 after, calculate the weight of downgoing emission of NF; At last when at least one subframe of pre-scheduling arrives, by descending scheduling unit 40 downstream bands of each subscriber equipment that is scheduled is dispatched at the identical frequency band of respective user equipment transmission uplink channel information, weight of downgoing emission according to the NF that calculates sends to subscriber equipment with downlink resource information.Base station in the present embodiment is to send the identical frequency band of uplink channel information by the downstream bands scheduling with subscriber equipment with respective user equipment, has guaranteed that zero the falling into of the information generation of base station down emission aimed at interference user equipment, reduces the interference of minizone; And by when ascending resource scheduling with reference to the user equipment information of pre-scheduling, guaranteed the subscriber equipment unanimity that up-downgoing is scheduled, thereby made disturbed subscriber equipment be scheduled for descending, suppress effects of jamming thereby improved NF.
With reference to shown in Figure 8, in a specific embodiment, pre-scheduling unit 10 can be realized by priority calculation unit 110 and downlink resource determining unit 210 in the base station of present embodiment, and uplink scheduling unit 20 can pass through ascending resource computing unit 201, up determining unit 202 and 203 realizations of number of resources determining unit, wherein:
Downlink resource determining unit 210 is used for service buffer and professional required number of resources according to the subscriber equipment that covers, determines the identification information and the descending resource requirement number of the subscriber equipment that is scheduled; Service buffer is the current service buffer of subscriber equipment that covers, and current subframe is subtracted each other and obtained to the be scheduled stock number of distribution of the subscriber equipment that covers between described at least one subframe;
Ascending resource computing unit 201 is used for service buffer and the professional required number of resources current according to the subscriber equipment that is scheduled, and calculates the up resource requirement number of the subscriber equipment that is scheduled;
Up determining unit 202, be used for working as the descending resource requirement number of the up resource requirement number of ascending resource computing unit 201 calculating, determine that then the up code check or the up filling information of respective user equipment makes up actual resource requirement number equate with descending resource requirement number less than pre-scheduling;
Number of resources determining unit 203 is used for working as the descending resource requirement number of the up resource requirement number of ascending resource computing unit 201 calculating greater than pre-scheduling, and then the up resource requirement number for the respective user equipment scheduling is the up resource requirement number that calculates;
And descending scheduling unit 40 is when the dispatching downlink resource, and the descending resource requirement number of dispatching for respective user equipment is the up resource requirement number that calculates.
In the present embodiment, when pre-scheduling, calculated the priority of the subscriber equipment that the base station covers, and obtained identification information and the descending resource requirement number of the subscriber equipment that is scheduled in these subscriber equipmenies by downlink resource determining unit 210 by priority calculation unit 110;
Then when carrying out ascending resource scheduling, calculated up resource requirement number by ascending resource computing unit 201, when the descending resource requirement number of up resource requirement number, then determine that by number of resources determining unit 203 the ascending resource number is the number of resources that ascending resource computing unit 201 calculates greater than pre-scheduling; When the descending resource requirement number of up resource requirement number less than pre-scheduling, then up determining unit 202 is determined up code check or up filling information according to up resource requirement number, and the number of resources that makes up actual resource requirement number and downlink resource determining unit 210 determine is identical; By uplink scheduling unit 20 ascending resource information (is comprised the up resource requirement number that number of resources determining unit 203 is determined at last; Or up determining unit 202 up code check or the up filling information determined) send to the subscriber equipment that is scheduled by uplink authorization;
After weights computing unit 30 receives uplink channel information, calculate the weight of downgoing emission of NF; The user equipment information that 40 meetings of descending scheduling unit are determined according to downlink resource determining unit 210, the ascending resource information that reaches 20 scheduling of uplink scheduling unit (comprise the up resource requirement number that number of resources determining unit 203 is determined; Or up determining unit 202 up code check or the up filling information determined) the dispatching downlink resource, and send to subscriber equipment.
And in another specific embodiment, the base station of present embodiment can also comprise wave beam weight computing unit 50, is used for comprising detection reference information SRS when the uplink channel information that weights computing unit 30 receives, and calculates the weight of downgoing emission of BF according to SRS;
Then descending scheduling unit 40 also is used for, and does not have corresponding NF weight of downgoing emission on first frequency band of descending channel, and then the weight of downgoing emission of the BF that calculates according to the wave beam weight computing unit on first frequency band sends to subscriber equipment with downlink resource information.
In the base station of present embodiment, if in the uplink channel information that receives SRS is arranged, then wave beam weight computing unit 50 can calculate the weight of downgoing emission of BF on the frequency band that receives SRS; Then for business datum for asymmetric on the channel of up-downgoing, such as the number of resources in user's equipment downward resource requirement number and the uplink scheduling information when inequality, when sending downlink resource information to subscriber equipment, can appear at and on the frequency band that has on the down channel (such as first frequency band), not have corresponding NF weight of downgoing emission, when then the base station sends downlink resource information on these frequency bands, can downlink resource information be sent to subscriber equipment according to the weight of downgoing emission of the BF that calculates.
The embodiment of the invention also provides a kind of dispatch channel resource system, and the structure of the base station that comprises is shown in Fig. 7 or 8.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of the foregoing description is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, and storage medium can comprise: read-only memory (ROM), random-access memory (ram), disk or CD etc.
More than to dispatch channel resource method, system and base station that the embodiment of the invention provided, be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (14)
1. a dispatch channel resource method is characterized in that, comprising:
Subscriber equipment to downlink resource correspondence at least one subframe carries out pre-scheduling, obtains the user equipment information of pre-scheduling;
Dispatch corresponding ascending resource according to the user equipment information of described pre-scheduling, and the ascending resource information of described scheduling is sent to the subscriber equipment that is scheduled by uplink authorization;
When receiving the uplink channel information that described subscriber equipment sends according to described uplink authorization, calculate the weight of downgoing emission of zero sunken figuration NF according to described uplink channel information;
According to the user equipment information and the described ascending resource message scheduling downlink resource of described pre-scheduling, and at the weight of downgoing emission of described at least one subframe, the downlink resource information of described scheduling is sent to described subscriber equipment according to described NF; The downstream bands of each subscriber equipment that is scheduled is identical with the frequency band that respective user equipment sends described uplink channel information in the wherein said downlink resource information.
2. the method for claim 1 is characterized in that, described subscriber equipment to downlink resource correspondence at least one subframe carries out pre-scheduling, and the user equipment information that obtains pre-scheduling specifically comprises:
The priority of the subscriber equipment that calculates described covering according to the service quality or the channel quality information of the subscriber equipment that the base station covered;
According to the service buffer and the professional required number of resources of the subscriber equipment of described covering, determine the identification information and the descending resource requirement number of the subscriber equipment that is scheduled; Described service buffer is the current service buffer of the subscriber equipment of described covering, and current subframe is subtracted each other and obtained to the be scheduled stock number of distributing of the subscriber equipment of described covering between described at least one subframe.
3. method as claimed in claim 2 is characterized in that, described at least one subframe is: the base station receives the corresponding subframe of described uplink channel information and adds any or a plurality of subframe that downlink resource is arranged after the number of sub frames that presets.
4. as claim 2 or 3 described methods, it is characterized in that described user equipment information according to described pre-scheduling is dispatched corresponding ascending resource and specifically comprised:
Determine the positional information of the described subscriber equipment that is scheduled in up channel, and determine that the number of resources that the described subscriber equipment that is scheduled takies is the descending resource requirement number of respective user equipment in described up channel.
5. method as claimed in claim 4 is characterized in that, comprises the priority of the described subscriber equipment that is scheduled in the user equipment information of described pre-scheduling, and then described user equipment information according to described pre-scheduling is dispatched corresponding ascending resource and also comprised:
Determine the priority that described subscriber equipment ascending resource distributes according to the priority of the described subscriber equipment that is scheduled.
6. as claim 2 or 3 described methods, it is characterized in that described user equipment information according to described pre-scheduling is dispatched corresponding ascending resource and specifically comprised:
According to the current service buffer of the described subscriber equipment that the is scheduled number of resources required, calculate the up resource requirement number of the described subscriber equipment that is scheduled with business;
When the descending resource requirement number of described up resource requirement number, determine that then the up code check or the up filling information of respective user equipment makes up actual resource requirement number equate with descending resource requirement number less than pre-scheduling;
When the descending resource requirement number of described up resource requirement number greater than pre-scheduling, then the up resource requirement number for the respective user equipment scheduling is the described up resource requirement number that calculates; And when described dispatching downlink resource information, for the descending resource requirement number of respective user equipment scheduling is the described up resource requirement number that calculates.
7. the method for claim 1 is characterized in that, the uplink channel information of described reception comprises demodulated reference signal DMRS, and then described dispatching downlink resource specifically comprises:
The downstream bands of each subscriber equipment that is scheduled is dispatched on the frequency band of the described DMRS of the up transmission of respective user equipment.
8. method as claimed in claim 7 is characterized in that, when described uplink channel information also comprises: survey reference information SRS, then described method also comprises: the weight of downgoing emission that calculates BF according to described SRS;
On first frequency band of descending channel, do not have corresponding NF weight of downgoing emission, then on described first frequency band according to the weight of downgoing emission of described BF, described downlink resource information is sent to subscriber equipment.
9. a base station is characterized in that, comprising:
The pre-scheduling unit is used for the subscriber equipment of at least one subframe downlink resource correspondence is carried out pre-scheduling, obtains the user equipment information of pre-scheduling;
The uplink scheduling unit is used for dispatching corresponding ascending resource according to the user equipment information of described pre-scheduling unit pre-scheduling, and the ascending resource information of described scheduling is sent to the subscriber equipment that is scheduled by uplink authorization;
Weight calculation unit is used for calculating the weight of downgoing emission of zero sunken figuration NF according to described uplink channel information when receiving the uplink channel information that described subscriber equipment sends according to described uplink authorization;
The descending scheduling unit, be used for according to the user equipment information of described pre-scheduling unit pre-scheduling and the ascending resource message scheduling downlink resource of uplink scheduling cell scheduling, and the weight of downgoing emission of the NF that calculates according to described weight calculation unit in described at least one subframe, the downlink resource information of described scheduling is sent to described subscriber equipment; The downstream bands of each subscriber equipment that is scheduled is identical with the frequency band that respective user equipment sends described uplink channel information in the wherein said downlink resource information.
10. base station as claimed in claim 9 is characterized in that, described pre-scheduling unit specifically comprises:
Priority calculation unit is used for the service quality of the subscriber equipment that covers according to the base station or the priority of the subscriber equipment that channel quality information calculates described covering;
The downlink resource determining unit is used for service buffer and professional required number of resources according to the subscriber equipment of described covering, determines the identification information and the descending resource requirement number of the subscriber equipment that is scheduled; Described service buffer is the current service buffer of the subscriber equipment of described covering, and current subframe is subtracted each other and obtained to the be scheduled stock number of distributing of the subscriber equipment of described covering between described at least one subframe.
11. base station as claimed in claim 10 is characterized in that, described uplink scheduling unit specifically comprises:
The ascending resource computing unit is used for service buffer and the professional required number of resources current according to the described subscriber equipment that is scheduled, and calculates the up resource requirement number of the described subscriber equipment that is scheduled;
Up determining unit, be used for working as the descending resource requirement number of the up resource requirement number of described ascending resource computing unit calculating, determine that then the up code check or the up filling information of respective user equipment makes up actual resource requirement number equate with descending resource requirement number less than pre-scheduling.
12. base station as claimed in claim 11 is characterized in that, described uplink scheduling unit also comprises:
The number of resources determining unit is used for working as the descending resource requirement number of the up resource requirement number of described ascending resource computing unit calculating greater than pre-scheduling, and then the up resource requirement number for the respective user equipment scheduling is the described up resource requirement number that calculates;
And described descending scheduling unit is when the dispatching downlink resource, and the descending resource requirement number of dispatching for respective user equipment is the described up resource requirement number that calculates.
13. base station as claimed in claim 9 is characterized in that, also comprises:
The wave beam weight computing unit is used for comprising detection reference information SRS when the uplink channel information that described weight calculation unit receives, and calculates the weight of downgoing emission of BF according to described SRS;
Then described descending scheduling unit also is used for, on first frequency band of descending channel, there is not corresponding NF weight of downgoing emission, then the weight of downgoing emission of the BF that calculates according to described wave beam weight computing unit on described first frequency band sends to subscriber equipment with described downlink resource information.
14. a dispatch channel resource system is characterized in that, comprises as each described base station of claim 9 to 13.
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| CN201110034463.6A CN102149204B (en) | 2011-02-01 | 2011-02-01 | Method and system for scheduling channel resources and base station |
| PCT/CN2012/070830 WO2012103812A1 (en) | 2011-02-01 | 2012-02-01 | Method and system for scheduling channel resources, and base station |
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| CN201110034463.6A CN102149204B (en) | 2011-02-01 | 2011-02-01 | Method and system for scheduling channel resources and base station |
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| CN117119602A (en) * | 2023-07-10 | 2023-11-24 | 北京云智软通信息技术有限公司 | User equipment scheduling method, device and base station |
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| Publication number | Publication date |
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| CN102149204B (en) | 2013-10-02 |
| WO2012103812A1 (en) | 2012-08-09 |
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