CN104349469A - Method for resource allocation in wireless communication network and device thereof - Google Patents
Method for resource allocation in wireless communication network and device thereof Download PDFInfo
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- CN104349469A CN104349469A CN201310333123.2A CN201310333123A CN104349469A CN 104349469 A CN104349469 A CN 104349469A CN 201310333123 A CN201310333123 A CN 201310333123A CN 104349469 A CN104349469 A CN 104349469A
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- phich
- predetermined condition
- uplink scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/29—Control channels or signalling for resource management between an access point and the access point controlling device
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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
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
Abstract
The invention discloses a PHICH resource allocation method and device. The method comprises the steps that uplink scheduling authorization possessing a PHICH candidate set meeting a first predetermined condition under a current transmission time interval is acquired from a scheduling authorization set to be processed; available PHICH resource of the uplink scheduling authorization possessing the PHICH candidate set meeting the first predetermined condition is acquired; the PHICH resource of which the number of the associated authorization meets a second predetermined condition is confirmed from the available PHICH resource of the uplink scheduling authorization possessing the PHICH candidate set meeting the first predetermined condition; and the PHICH resource of which the number of the associated authorization meets the second predetermined condition is allocated to the uplink scheduling authorization possessing the PHICH candidate set meeting the first predetermined condition under the current transmission time interval. The PHICH resource required by PUSCH transmission can be reduced by the method.
Description
Technical field
The present invention relates to wireless communication technology, particularly relate to a kind of method and the device that carry out Resourse Distribute within a wireless communication network.
Background technology
LTE(Long Term Evolution, Long Term Evolution) in system, each PUSCH(Physical Uplink Shared Channel, Physical Uplink Shared Channel) transmission all need distribution one corresponding PHICH(Physical HARQ Indicator Channel, Physical HARQ Indicator Channel) resource, in order to UE(User Equipment, subscriber equipment) feed back HARQ(Hybrid Automatic Repeat Request, hybrid automatic repeat-request) ACK(confirmation)/NACK (not confirming) information.Wherein, PUSCH is used for the scheduled transmission of upstream data, is the main upstream data Bearer Channel of LTE physical layer, can carries the different transferring content from upper strata, comprise control information, user service information etc.The transmission of LTE physical layer PHICH channel is organized with the form of PHICH group, and the multiple PHICH channels in a PHICH group adopt the multiplex mode of orthogonal spreading sequence, take identical time domain and the physical resource of frequency domain.A PHICH channel is determined with ID in group jointly by the ID of PHICH group, and be generally expressed as index to [n_group, n_seq], wherein, n_group is the group number of PHICH group, and n_seq is the orthogonal sequence number in PHICH group.The index of PHICH channel is pair corresponding with the resource location of transmitting uplink data, particularly, by first PRB(Physical Resource Block of corresponding up PUSCH data, Physical Resource Block) sequence number determined.PHICH resource corresponding to each PUSCH transmission must be unique, otherwise UE cannot be correctly decoded the HARQ ACK/NACK information of PHICH transmission.
PHICH resource distribution method relatively more conventional is at present, reserved abundant PHICH resource, makes the PHICH resource reserved be more than or equal to schedulable PRB sum.Such as, when Ng=1, for 20M bandwidth totally 100 PRB, reserved 104 PHICH resource, i.e. 13 groups of PHICH resource altogether.Wherein, PHICH group number required time Ng=1 refers to each PRB up corresponding HARQ process.Adopt and can ensure in this way can be assigned to unique PHICH resource for any PUSCH transmission, and the position of the PRB of scheduling is not limited.But this PHICH resource method of salary distribution of prior art, need reserved PHICH resource number very large, and in actual use, each TTI(Transmission Time Interval, Transmission Time Interval) under schedulable mandate number be usually no more than 10, therefore adopt this PHICH resource method of salary distribution of prior art, larger to the waste of PHICH resource and downlink resource.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of PHICH resource distribution method and device, does not need reserved a large number of PHICH resource, to reduce the waste to downlink resource.
According to an aspect of the present invention, providing a kind of in a wireless communication system for distributing the method for PHICH resource, wherein, comprising:
From pending scheduling authorization set, there is under obtaining current transmission time interval the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition;
There is described in acquisition the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition;
Have the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition from described, determine to associate the PHICH resource of authorizing number second predetermined condition;
There is under authorizing the PHICH resource of number second predetermined condition to distribute to described current transmission time interval described association the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition.
According to another aspect of the present invention, additionally provide a kind of in the base station of wireless communication system for distributing the device of PHICH resource, wherein, comprising:
First acquisition device, for from pending scheduling authorization set, has the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under obtaining current transmission time interval;
Second acquisition device, for having the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition described in obtaining;
Determining device, for having in the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition from described, determines to associate the PHICH resource of authorizing number second predetermined condition;
Distributor, for having the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under authorizing the PHICH resource of number second predetermined condition to distribute to described current transmission time interval described association.
Compared with prior art, the present invention has the following advantages: the present invention is from pending scheduling authorization set, there is under obtaining current TTI the spendable PHICH resource of uplink scheduling grant of minimum PHICH Candidate Set, and therefrom obtain the minimum PHICH resource of association mandate number, there is under PHICH resource minimum for obtained association mandate number is distributed to current TTI the uplink scheduling grant of minimum PHICH Candidate Set, the PHICH resource required for PUSCH transmission can be reduced.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is a kind of according to an embodiment of the invention in a wireless communication system for distributing the method flow diagram of PHICH resource;
Fig. 2 is a kind of according to another embodiment of the present invention in a wireless communication system for distributing the method flow diagram of PHICH resource;
Fig. 3 be a kind of according to an embodiment of the invention in the base station of wireless communication system for distributing the device schematic diagram of PHICH resource;
Fig. 4 be a kind of according to another embodiment of the present invention in the base station of wireless communication system for distributing the device schematic diagram of PHICH resource.
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
In the present invention, base station refers within a wireless communication network, in certain area of radio coverage, by mobile switching center, and radio station is believed in the transceiving carrying out information transmission between mobile telephone terminal, and the base station in the present invention includes but not limited to macro base station, micro-base station, femto base station, repeater, Home eNodeB etc.Those skilled in the art will be understood that other subscriber equipment, the network equipment, network are equally applicable to the present invention, within also should being included in scope, and are contained in this at this with way of reference.
The present invention the cordless communication network that is suitable for comprise cordless communication network based on agreements such as 3GPP or LTE, especially based on LTE TDD(Time Division Duplexing, time division duplex) and FDD(Frequency Division Duplexing, Frequency Division Duplexing (FDD)) agreement wireless communication system.
Be described for the cordless communication network based on LTE protocol below:
Fig. 1 show a kind of according to an embodiment of the invention in based on the wireless communication system of LTE protocol for distributing the method flow diagram of PHICH resource.
As shown in Figure 1, in step S101, base station, from pending scheduling authorization set, has the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under obtaining current TTI.
Wherein, described first predetermined condition comprises following any one:
-PHICH Candidate Set is minimum or less;
-PHICH Candidate Set is less than the first predetermined threshold;
Below for described first predetermined condition for PHICH Candidate Set is minimum, Benq station, from pending scheduling authorization set, obtains the uplink scheduling grant under current TTI with minimum PHICH Candidate Set.
Example 1
Such as, under current TTI, uplink scheduling grant in pending scheduling authorization set is { g_x1, g_x2,, g_x15}, the number of its corresponding PHICH Candidate Set is { k0, k1,, k14}, if k0 and k1 is { k0, k1,, number minimum in k14}, the i.e. minimum number of the PHICH Candidate Set that k0 and k1 is corresponding, g_x1 and g_x2 in uplink scheduling grant set under current TTI then corresponding to k0 and k1, for having the uplink scheduling grant of minimum PHICH Candidate Set under current TTI.
In step s 102, there is described in the acquisition of base station the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition.
Below still for described first predetermined condition for PHICH Candidate Set is minimum, Benq station obtains has the spendable PHICH resource of uplink scheduling grant of minimum PHICH Candidate Set.
Example 2
Such as, the PHICH resource that can be scheduled in the uplink scheduling grant set under current TTI is G={g0, g1, g14}, the number of its corresponding PHICH Candidate Set be k0, k1 ... k14}, if k0 and k1 be k0, k1 ... number minimum in k14}, the i.e. minimum number of the PHICH Candidate Set that k0 and k1 is corresponding, then the PHICH resource g0 that can be scheduled in the uplink scheduling grant set under the current TTI corresponding to k0 and k1 and g1, for having the spendable PHICH resource of uplink scheduling grant of minimum PHICH Candidate Set.
In step s 103, base station has the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition from described, determines to associate the PHICH resource of authorizing number second predetermined condition.
Wherein, described second predetermined condition comprises:
-association authorizes number minimum or less;
-association authorizes number to be less than the second predetermined threshold.
Below with described first predetermined condition for PHICH Candidate Set is minimum, it is example that second predetermined condition authorizes number minimum for association, Benq station has the spendable PHICH resource of uplink scheduling grant of minimum PHICH Candidate Set from described, determines to associate the PHICH resource of authorizing number minimum.
Example 3
The PHICH resource g0 that can be scheduled in the uplink scheduling grant set under the current TTI corresponding to k0 and k1 obtained in above-mentioned example 2 and g1, for the uplink scheduling grant with minimum PHICH Candidate Set selects spendable PHICH resource.
Such as, the PHICH resource that can be scheduled in the uplink scheduling grant set under current TTI is G={g0, g1,, the PHICH index corresponding to g14}, g0 is to being { p0_0, p1_0 ..., index is to { p0_0, p1_0 ... the mandate number that associates is { m0_0, m1_0,, select m0_0, m1_0 ... in PHICH index corresponding to minimum value m0_0 to p0_0.In like manner, the PHICH index of g1 corresponding to it to for p0_1, p1_1 ..., index to p0_1, p1_1 ... the mandate number that associates for m0_1, m1_1 ..., select m0_1, m1_1 ... in PHICH index corresponding to minimum value m0_1 to p0_1.
When index corresponding to g0 is to the mandate number m0_0 associated by p0_0, the index more corresponding than g1 is little to the mandate number m0_1 associated by p0_1, then p0_0 is the PHICH resource that association authorizes number minimum.
In step S104, base station has the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under authorizing the PHICH resource of number second predetermined condition to distribute to described current TTI described association.
Below still with described first predetermined condition for PHICH Candidate Set is minimum, it is example that second predetermined condition also authorizes number minimum for association, and Benq station has the uplink scheduling grant of minimum PHICH Candidate Set under authorizing the minimum PHICH resource of number to distribute to described current TTI described association.
Example 4
As described in above-mentioned example 3, p0_0 is the PHICH resource that association authorizes number minimum, then p0_0 is distributed to the g_x1 in the uplink scheduling grant set described in example 1 by base station.
As described in example 1, the uplink scheduling grant under current TTI with minimum PHICH Candidate Set has multiple, even m0_0 equals m0_1, the uplink scheduling grant then under current TTI with minimum PHICH Candidate Set is g_x1 or g_x2, alternatively, Stochastic choice one from g_x1 or g_x2, as g_x1, p0_0 is distributed to the g_x1 in described uplink scheduling grant set by base station.
Alternatively, base station also can have in the uplink scheduling grant of minimum PHICH Candidate Set from described multiple current TTI, selects the PRB call number corresponding to each uplink scheduling grant to meet the uplink scheduling grant of the 3rd predetermined condition.PRB call number such as corresponding to g_x1 is less than the PRB call number corresponding to g_x2, then select g_x1, p0_0 is distributed to the g_x1 in described uplink scheduling grant set.
Wherein, described 3rd predetermined condition comprises:
-PRB call number is minimum or less;
-PRB call number is less than the 3rd predetermined threshold.
It will be understood by those skilled in the art that to the first predetermined condition in the present embodiment, the second predetermined condition; 3rd predetermined condition be limited only to citing; other are not illustrated but yet predetermined condition used in the present invention, all should be included within this patent protection range yet, and be contained in this with way of reference.
In step S105, base station, from described pending scheduling authorization set, is deleted the uplink scheduling grant having distributed PHICH resource, is associated grant column list upgrade the list of PHICH Candidate Set with PHICH resource.
To distribute the uplink scheduling grant of PHICH resource, delete from pending scheduling authorization set, the PHICH resource of identical uplink scheduling grant being carried out to repetition can be avoided to distribute.
Base station associates grant column list to the list of PHICH Candidate Set with PHICH resource and upgrades, and is to the PHICH resource of having distributed be deleted from candidate queue, avoiding duplicate allocation.
In step s 106, base station associates grant column list with PHICH resource repeat described step S101 to S105 according to the uplink scheduling grant list after renewal, the list of PHICH Candidate Set, distributes until complete PHICH resource to all pending scheduling authorizations in described pending scheduling authorization set.
The present embodiment is from pending scheduling authorization set, there is under obtaining current TTI the spendable PHICH resource of uplink scheduling grant of minimum PHICH Candidate Set, and therefrom obtain the minimum PHICH resource of association mandate number, there is under PHICH resource minimum for obtained association mandate number is distributed to current TTI the uplink scheduling grant of minimum PHICH Candidate Set, the PHICH resource required for PUSCH transmission can be reduced.
Fig. 2 shows a kind of according to another embodiment of the present invention in a wireless communication system for distributing the method flow diagram of PHICH resource, wherein, step S201-S206 is with identical with reference to the step S101-S106 in the embodiment described by accompanying drawing 1 above, therefore not to repeat here, is contained in this with way of reference.In addition, embodiment illustrated in fig. 2ly also step S207 is comprised.
In step S207, before step S201, complete the scheduling of resource mandate to all PUSCH.
Particularly, the mandate of each PUSCH scheduling of resource has multiple optional PHICH resource, if after the mandate of each PUSCH scheduling of resource, just carry out the distribution of PHICH resource, then unpredictable follow-up PUSCH scheduling authorization needs the PHICH resource that takies, and after the scheduling of resource mandate of PUSCH all completes, then can according to scheduling of resource situation, plan as a whole to select each pending scheduling authorization to need the PHICH resource of distributing, PHICH resource is distributed more reasonable, thus under limited PHICH resource condition, for all pending scheduling authorizations are assigned to corresponding PHICH resource.
Alternatively, a kind of according to another embodiment of the present invention method in a wireless communication system for distributing PHICH resource can also comprise step S208.
Wherein, in step S208, base station by the restricted number of mandate schedulable under each TTI within predetermined threshold.
Such as, as Ng=1/2, under each TTI, the restricted number of schedulable mandate is within 15, and the quantity of this schedulable mandate is relevant to the number of the selectable value of n_DMRS, based on the selectable value number of n_DMRS, can draw based on experience value.Wherein, n_DMRS is the parameter indicating PHICH resource in the uplink scheduling grant message corresponding to PUSCH, be used to indicate the signaling of the PHICH code channel resource corresponding to the up PUSCH data transmission block of UE, be included in the uplink grant information of its correspondence.
Wherein, Ng=1/2 refers to that the total code channel number of PHICH is the half of up schedulable PRB sum.
Alternatively, when Ng=1 or 2, can not limit the quantity of mandate schedulable under each TTI.
By the present embodiment, can ensure can be assigned to unique PHICH resource for any PUSCH transmission, and the position of the PRB of scheduling is not limited.Reserved large numbers of PHICH resource is not needed, during as Ng=1 or 2 yet.
Fig. 3 show a kind of according to an embodiment of the invention in the base station of wireless communication system for distributing the device schematic diagram of PHICH resource.This device comprises: the first acquisition device 301, second acquisition device 302, determining device 303, distributor 304, deletion and updating device 305 and duplicating device 306.
Wherein, the first acquisition device 301, for from pending scheduling authorization set, has the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under obtaining current TTI.
Wherein, described first predetermined condition comprises following any one:
-PHICH Candidate Set is minimum or less;
-PHICH Candidate Set is less than the first predetermined threshold;
Below for described first predetermined condition for PHICH Candidate Set is minimum, illustrate that the first acquisition device 301 is from pending scheduling authorization set, obtain the uplink scheduling grant under current TTI with minimum PHICH Candidate Set.
Example 5
Such as, under current TTI, uplink scheduling grant in pending scheduling authorization set is { g_x1, g_x2,, g_x15}, the number of its corresponding PHICH Candidate Set is { k0, k1,, k14}, if k0 and k1 is { k0, k1,, number minimum in k14}, the i.e. minimum number of the PHICH Candidate Set that k0 and k1 is corresponding, g_x1 and g_x2 in uplink scheduling grant set under current TTI then corresponding to k0 and k1, for having the uplink scheduling grant of minimum PHICH Candidate Set under current TTI.
Second acquisition device 302, has the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition described in acquisition.
Below still for described first predetermined condition for PHICH Candidate Set is minimum, illustrate that the second acquisition device 302 obtains and has the spendable PHICH resource of uplink scheduling grant of minimum PHICH Candidate Set.
Example 6
Such as, the PHICH resource that can be scheduled in the uplink scheduling grant set under current TTI is G={g0, g1, g14}, the number of its corresponding PHICH Candidate Set be k0, k1 ... k14}, if k0 and k1 be k0, k1 ... number minimum in k14}, the i.e. minimum number of the PHICH Candidate Set that k0 and k1 is corresponding, then the PHICH resource g0 that can be scheduled in the uplink scheduling grant set under the current TTI corresponding to k0 and k1 and g1, for having the spendable PHICH resource of uplink scheduling grant of minimum PHICH Candidate Set.
Determining device 303, for having in the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition from described, determines to associate the PHICH resource of authorizing number second predetermined condition.
Wherein, described second predetermined condition comprises:
-association authorizes number minimum or less;
-association authorizes number to be less than the second predetermined threshold.
Below with described first predetermined condition for PHICH Candidate Set is minimum, it is example that second predetermined condition authorizes number minimum for association, illustrate that determining device 303 has the spendable PHICH resource of uplink scheduling grant of minimum PHICH Candidate Set from described, determine to associate the PHICH resource of authorizing number minimum.
Example 7
The PHICH resource g0 that can be scheduled in the uplink scheduling grant set under the current TTI corresponding to k0 and k1 obtained in above-mentioned example 2 and g1, for the uplink scheduling grant with minimum PHICH Candidate Set selects spendable PHICH resource.
Such as, the PHICH resource that can be scheduled in the uplink scheduling grant set under current TTI is G={g0, g1,, the PHICH index corresponding to g14}, g0 is to being { p0_0, p1_0 ..., index is to { p0_0, p1_0 ... the mandate number that associates is { m0_0, m1_0,, select m0_0, m1_0 ... in PHICH index corresponding to minimum value m0_0 to p0_0.In like manner, the PHICH index of g1 corresponding to it to for p0_1, p1_1 ..., index to p0_1, p1_1 ... the mandate number that associates for m0_1, m1_1 ..., select m0_1, m1_1 ... in PHICH index corresponding to minimum value m0_1 to p0_1.
When index corresponding to g0 is to the mandate number m0_0 associated by p0_0, the index more corresponding than g1 is little to the mandate number m0_1 associated by p0_1, then p0_0 is the PHICH resource that association authorizes number minimum.
Distributor 304, for having the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under authorizing the PHICH resource of number second predetermined condition to distribute to described current transmission time interval described association.
Below still with described first predetermined condition for PHICH Candidate Set is minimum, it is example that second predetermined condition also authorizes number minimum for association, and the uplink scheduling grant under described association authorizes the minimum PHICH resource of number to distribute to described current TTI by distributor 304 with minimum PHICH Candidate Set is described.
Example 8
As described in above-mentioned example 3, p0_0 is the PHICH resource that association authorizes number minimum, then p0_0 is distributed to the g_x1 in the uplink scheduling grant set described in example 1 by distributor 304.
As described in example 1, the uplink scheduling grant under current TTI with minimum PHICH Candidate Set has multiple, even m0_0 equals m0_1, the uplink scheduling grant then under current TTI with minimum PHICH Candidate Set is g_x1 or g_x2, alternatively, Stochastic choice one from g_x1 or g_x2, as g_x1, p0_0 is distributed to the g_x1 in described uplink scheduling grant set by distributor 304.
Alternatively, distributor 304 also can have in the uplink scheduling grant of minimum PHICH Candidate Set from described multiple current TTI, selects the PRB call number corresponding to each uplink scheduling grant to meet the uplink scheduling grant of the 3rd predetermined condition.PRB call number such as corresponding to g_x1 is less than the PRB call number corresponding to g_x2, then select g_x1, p0_0 is distributed to the g_x1 in described uplink scheduling grant set.
Then described distributor 304 can comprise: first selects module and the first distribution module.
First selects module (not shown), for when the uplink scheduling grant of the PHICH Candidate Set under described current transmission time interval with first predetermined condition has multiple, have in the uplink scheduling grant of PHICH Candidate Set of first predetermined condition from described multiple current transmission time interval, select the PRB call number corresponding to each uplink scheduling grant to meet the uplink scheduling grant of the 3rd predetermined condition.
First distribution module (not shown), for having the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under authorizing the PHICH resource of number second predetermined condition to distribute to selected current transmission time interval described association.
Wherein, described 3rd predetermined condition comprises:
-PRB call number is minimum or less;
-PRB call number is less than the 3rd predetermined threshold.
It will be understood by those skilled in the art that to the first predetermined condition in the present embodiment, the second predetermined condition; 3rd predetermined condition be limited only to citing; other are not illustrated but yet predetermined condition used in the present invention, all should be included within this patent protection range yet, and be contained in this with way of reference.
Delete and updating device 305, for from described pending scheduling authorization set, described in deletion, distributed the uplink scheduling grant of PHICH resource, with PHICH resource, grant column list has been associated to the list of PHICH Candidate Set and upgrades.
To distribute the uplink scheduling grant of PHICH resource, delete from pending scheduling authorization set, the PHICH resource of identical uplink scheduling grant being carried out to repetition can be avoided to distribute.
Base station associates grant column list to the list of PHICH Candidate Set with PHICH resource and upgrades, and is to the PHICH resource of having distributed be deleted from candidate queue, avoiding duplicate allocation.
Duplicating device 306, notify described first acquisition device, second acquisition device, determining device associates grant column list repetitive operation according to the uplink scheduling grant list after renewal, the list of PHICH Candidate Set with PHICH resource with distributor, distributes until complete PHICH resource to all pending scheduling authorizations in described pending scheduling authorization set.
The present embodiment is from pending scheduling authorization set, there is under obtaining current TTI the spendable PHICH resource of uplink scheduling grant of minimum PHICH Candidate Set, and therefrom obtain the minimum PHICH resource of association mandate number, there is under PHICH resource minimum for obtained association mandate number is distributed to current TTI the uplink scheduling grant of minimum PHICH Candidate Set, the PHICH resource required for PUSCH transmission can be reduced.
Fig. 4 show a kind of according to another embodiment of the present invention in the base station of wireless communication system for distributing the device schematic diagram of PHICH resource, wherein, first acquisition device 401, second acquisition device 402, determining device 403, distributor 404, delete with updating device 405 and duplicating device 406 and the first acquisition device 301, second acquisition device 302, determining device 303, the distributor 304 in the embodiment above described by reference accompanying drawing 3, delete identical with duplicating device 306 with updating device 305, therefore not to repeat here, is contained in this with way of reference.In addition, embodiment illustrated in fig. 4ly scheduling authorization device 407 is also comprised.
Wherein, scheduling authorization device 407, for completing the scheduling of resource mandate to all PUSCH, and after completing the scheduling of resource mandate to all PUSCH, notifies described first acquisition device, the second acquisition device, determining device and distributor executable operations.
Particularly, the mandate of each PUSCH scheduling of resource has multiple optional PHICH resource, if after the mandate of each PUSCH scheduling of resource, just carry out the distribution of PHICH resource, then unpredictable follow-up PUSCH scheduling authorization needs the PHICH resource that takies, and after the scheduling of resource mandate of PUSCH all completes, then can according to scheduling of resource situation, plan as a whole to select each pending scheduling authorization to need the PHICH resource of distributing, PHICH resource is distributed more reasonable, thus under limited PHICH resource condition, for all pending scheduling authorizations are assigned to corresponding PHICH resource.
Alternatively, the device according to another embodiment of the present invention for distributing PHICH resource in the base station of wireless communication system can also comprise restraint device.
Wherein, restraint device (not shown), for by the restricted number of mandate schedulable under each TTI within predetermined threshold.
Such as, as Ng=1/2, under each TTI, the restricted number of schedulable mandate is within 15, and the quantity of this schedulable mandate is relevant to the number of the selectable value of n_DMRS, based on the selectable value number of n_DMRS, can draw based on experience value.Wherein, n_DMRS is the parameter indicating PHICH resource in the uplink scheduling grant message corresponding to PUSCH, be used to indicate the signaling of the PHICH code channel resource corresponding to the up PUSCH data transmission block of UE, be included in the uplink grant information of its correspondence.
Wherein, Ng=1/2 refers to that the total code channel number of PHICH is the half of up schedulable PRB sum.
Alternatively, when Ng=1 or 2, can not limit the quantity of mandate schedulable under each TTI.
By the present embodiment, can ensure can be assigned to unique PHICH resource for any PUSCH transmission, and the position of the PRB of scheduling is not limited.Reserved large numbers of PHICH resource is not needed, during as Ng=1 or 2 yet.
It should be noted that the present invention can be implemented in the assembly of software and/or software restraint, such as, each device of the present invention can adopt application-specific integrated circuit (ASIC) (ASIC) or any other similar hardware device to realize.In one embodiment, software program of the present invention can perform to realize step mentioned above or function by processor.Similarly, software program of the present invention (comprising relevant data structure) can be stored in computer readable recording medium storing program for performing, such as, and RAM memory, magnetic or CD-ROM driver or floppy disc and similar devices.In addition, steps more of the present invention or function can adopt hardware to realize, such as, as coordinating with processor thus performing the circuit of each step or function.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in system claims or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.
Claims (12)
1., in a wireless communication system for distributing a method for PHICH resource, wherein, comprising:
-from pending scheduling authorization set, there is under obtaining current transmission time interval the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition;
There is described in-acquisition the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition;
-have the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition from described, determine to associate the PHICH resource of authorizing number second predetermined condition;
-authorize the PHICH resource of number second predetermined condition to distribute to described current transmission time interval described association under there is the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition.
2. method according to claim 1, wherein, the step under the described PHICH resource by described association mandate number second predetermined condition distributes to described current transmission time interval with the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition comprises:
-when the uplink scheduling grant of the PHICH Candidate Set under described current transmission time interval with first predetermined condition has multiple, have in the uplink scheduling grant of PHICH Candidate Set of first predetermined condition from described multiple current transmission time interval, select the PRB call number corresponding to each uplink scheduling grant to meet the uplink scheduling grant of the 3rd predetermined condition;
-authorize the PHICH resource of number second predetermined condition to distribute to selected current transmission time interval described association under there is the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition.
3. method according to claim 1 and 2, wherein, also comprises:
-from described pending scheduling authorization set, distribute the uplink scheduling grant of PHICH resource described in deletion, with PHICH resource, grant column list has been associated to the list of PHICH Candidate Set and upgrades.
4. method according to claim 3, wherein, also comprises:
-associate grant column list with PHICH resource repeat described step a to d according to the uplink scheduling grant list after renewal, the list of PHICH Candidate Set, distribute until complete PHICH resource to all pending scheduling authorizations in described pending scheduling authorization set.
5. method according to any one of claim 1 to 4, wherein, also comprised before step a:
-complete scheduling of resource mandate to all PUSCH.
6. method according to any one of claim 1 to 5, wherein, also comprises:
-by the restricted number of mandate schedulable under each Transmission Time Interval within predetermined threshold.
7. in the base station of wireless communication system for distributing a device for PHICH resource, wherein, comprising:
First acquisition device, for from pending scheduling authorization set, has the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under obtaining current transmission time interval;
Second acquisition device, for having the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition described in obtaining;
Determining device, for having in the spendable PHICH resource of uplink scheduling grant of the PHICH Candidate Set of first predetermined condition from described, determines to associate the PHICH resource of authorizing number second predetermined condition;
Distributor, for having the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under authorizing the PHICH resource of number second predetermined condition to distribute to described current transmission time interval described association.
8. device according to claim 7, wherein, described distributor comprises:
First selects module, for when the uplink scheduling grant of the PHICH Candidate Set under described current transmission time interval with first predetermined condition has multiple, have in the uplink scheduling grant of PHICH Candidate Set of first predetermined condition from described multiple current transmission time interval, select the PRB call number corresponding to each uplink scheduling grant to meet the uplink scheduling grant of the 3rd predetermined condition;
First distribution module, for having the uplink scheduling grant of the PHICH Candidate Set of first predetermined condition under authorizing the PHICH resource of number second predetermined condition to distribute to selected current transmission time interval described association.
9. the device according to claim 7 or 8, wherein, also comprises:
Delete and updating device, for from described pending scheduling authorization set, described in deletion, distributed the uplink scheduling grant of PHICH resource, with PHICH resource, grant column list has been associated to the list of PHICH Candidate Set and upgrades.
10. device according to claim 9, wherein, also comprises:
Duplicating device, for notifying described first acquisition device, second acquisition device, determining device associates grant column list repetitive operation according to the uplink scheduling grant list after renewal, the list of PHICH Candidate Set with PHICH resource with distributor, distributes until complete PHICH resource to all pending scheduling authorizations in described pending scheduling authorization set.
11. devices according to any one of claim 7 to 10, wherein, also comprise:
Scheduling authorization device, for completing the scheduling of resource mandate to all PUSCH, and after completing the scheduling of resource mandate to all PUSCH, notifies described first acquisition device, the second acquisition device, determining device and distributor executable operations.
12. devices according to any one of claim 7 to 11, wherein, also comprise:
Restraint device, for by the restricted number of mandate schedulable under each Transmission Time Interval within predetermined threshold.
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