CN104349469B - A kind of method and device for carrying out resource allocation within a wireless communication network - Google Patents
A kind of method and device for carrying out resource allocation within a wireless communication network Download PDFInfo
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- CN104349469B CN104349469B CN201310333123.2A CN201310333123A CN104349469B CN 104349469 B CN104349469 B CN 104349469B CN 201310333123 A CN201310333123 A CN 201310333123A CN 104349469 B CN104349469 B CN 104349469B
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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 kind of PHICH resource distribution method and device, wherein, method includes：From pending scheduling authorization set, the uplink scheduling grant under current transmission time interval with the PHICH Candidate Sets for meeting the first predetermined condition is obtained；PHICH resource workable for obtaining the uplink scheduling grant of the PHICH Candidate Sets for having and meeting the first predetermined condition；From PHICH resource workable for the uplink scheduling grant of the PHICH Candidate Sets for having and meeting the first predetermined condition, it is determined that association authorizes the PHICH resource of number the second predetermined condition of satisfaction；Number is authorized to meet that the PHICH resource of the second predetermined condition distributes to the uplink scheduling grant under the current transmission time interval with the PHICH Candidate Sets for meeting the first predetermined condition the association.The present invention can reduce the PHICH resource required for PUSCH transmission.
Description
Technical field
The present invention relates to wireless communication technology, more particularly to a kind of method for carrying out resource allocation within a wireless communication network
And device.
Background technology
LTE（Long Term Evolution, Long Term Evolution）In system, each PUSCH（Physical Uplink
Shared Channel, Physical Uplink Shared Channel）Transmission is required for distributing a corresponding PHICH（Physical HARQ
Indicator Channel, Physical HARQ Indicator Channel）Resource, to UE（User Equipment, user equipment）Feedback
HARQ（Hybrid Automatic Repeat Request, hybrid automatic repeat-request）ACK（Confirm）/ NACK (does not confirm)
Information.Wherein, PUSCH is used for the scheduled transmission of upstream data, is the main upstream data Bearer Channel of LTE physical layers, can be with
Carry the different transferring contents from upper strata, including control information, user service information etc..LTE physical layer PHICH channels
Transmit and carry out tissue in the form of PHICH groups, multiple PHICH channels in a PHICH group use the multiplexing of orthogonal spreading sequence
Mode, take the physical resource of identical time domain and frequency domain.One PHICH channel is jointly true by ID in the ID and group of PHICH groups
It is fixed, index is typically expressed as to [n_group, n_seq], wherein, n_group is the group number of PHICH groups, and n_seq is PHICH groups
Interior orthogonal sequence number.The index pair of PHICH channels is corresponding with the resource location of transmitting uplink data, specifically, by corresponding
Up PUSCH data first PRB（Physical Resource Block, Physical Resource Block）Sequence number determined.Often
PHICH resource corresponding to secondary PUSCH transmission must be unique, the HARQ ACK/NACK information that otherwise UE can not transmit to PHICH
It is correctly decoded.
PHICH resource distribution method more commonly used at present is to reserve enough PHICH resources, make reserved PHICH
Resource is more than or equal to the PRB sums of schedulable.It is pre- altogether for 20M bandwidth totally 100 PRB for example, in the case of Ng=1
Stay 104 PHICH resources, i.e. 13 groups of PHICH resources.Wherein, Ng=1 refer to each up PRB pair answer HARQ process when
PHICH group numbers required for waiting.It can ensure be assigned to uniquely for any PUSCH transmission in this way
PHICH resource, and the PRB of scheduling position is not limited.But this PHICH resource method of salary distribution of prior art,
Need reserved PHICH resource number very big, and in actual use, each TTI（Transmission Time Interval,
Transmission Time Interval）The mandate number of lower schedulable is typically not greater than 10, therefore uses this PHICH resource of prior art to distribute
Mode, it is that the waste of downlink resource is bigger to PHICH resource.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of PHICH resource distribution method and device, it is not necessary to reserved
Large number of PHICH resource, to reduce the waste to downlink resource.
According to an aspect of the present invention, there is provided a kind of method for being used to distribute PHICH resource in a wireless communication system,
Wherein, including：
From pending scheduling authorization set, obtaining has the first predetermined condition of satisfaction under current transmission time interval
The uplink scheduling grant of PHICH Candidate Sets；
Workable for the uplink scheduling grant for obtaining the PHICH Candidate Sets for having and meeting the first predetermined condition
PHICH resource；
Workable for the uplink scheduling grant of the PHICH Candidate Sets for having and meeting the first predetermined condition
In PHICH resource, it is determined that association authorizes the PHICH resource of number the second predetermined condition of satisfaction；
Number is authorized to meet that the PHICH resource of the second predetermined condition distributes to the current transmission time interval association
The lower uplink scheduling grant with the PHICH Candidate Sets for meeting the first predetermined condition.
According to another aspect of the present invention, additionally provide it is a kind of in the base station of wireless communication system be used for distribute
The device of PHICH resource, wherein, including：
First acquisition device, have completely for from pending scheduling authorization set, obtaining under current transmission time interval
The uplink scheduling grant of the PHICH Candidate Sets of the first predetermined condition of foot；
Second acquisition device, for obtaining the up-link with the PHICH Candidate Sets for meeting the first predetermined condition
PHICH resource workable for scheduling authorization；
Determining device, for being awarded from the uplink scheduling with the PHICH Candidate Sets for meeting the first predetermined condition
In PHICH resource workable for power, it is determined that association authorizes the PHICH resource of number the second predetermined condition of satisfaction；
Distributor, for authorizing number to meet that the PHICH resource of the second predetermined condition distributes to described work as the association
There is the uplink scheduling grant for the PHICH Candidate Sets for meeting the first predetermined condition under preceding Transmission Time Interval.
Compared with prior art, the present invention has advantages below：The present invention is obtained and worked as from pending scheduling authorization set
PHICH resource workable for uplink scheduling grant with minimum PHICH Candidate Sets under preceding TTI, and therefrom obtain association
The minimum PHICH resource of number is authorized, the PHICH resource that acquired association authorizes number minimum, which is distributed under current TTI, to be had
The uplink scheduling grant of minimum PHICH Candidate Sets, it is possible to reduce the PHICH resource required for PUSCH transmission.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is a kind of side for being used to distribute PHICH resource in a wireless communication system according to one embodiment of the invention
Method flow chart；
Fig. 2 is a kind of side for being used to distribute PHICH resource in a wireless communication system according to another embodiment of the present invention
Method flow chart；
Fig. 3 is to be used to distribute PHICH moneys in the base station of wireless communication system according to a kind of of one embodiment of the invention
The schematic device in source；
Fig. 4 is to be used to distribute PHICH moneys in the base station of wireless communication system according to a kind of of another embodiment of the present invention
The schematic device in source.
Same or analogous reference represents same or analogous part in accompanying drawing.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
In the present invention, base station refers within a wireless communication network, in certain area of radio coverage, by mobile logical
Believe switching centre, with mobile telephone terminal between carry out information transmission transceiving letter radio station, the present invention in base station bag
Include but be 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 it
His user equipment, the network equipment, network is equally applicable to the present invention, should also be included within the scope of the present invention, and
This is incorporated herein by reference.
The cordless communication network that the present invention is applicable includes the cordless communication network based on agreements such as 3GPP or LTE, especially
It is to be based on LTE TDD（Time Division Duplexing, time division duplex）And FDD（Frequency Division
Duplexing, FDD）The wireless communication system of agreement.
Illustrated below by taking the cordless communication network based on LTE protocol as an example：
Fig. 1 shows according to an embodiment of the invention a kind of be used in the wireless communication system based on LTE protocol
Distribute the method flow diagram of PHICH resource.
As shown in figure 1, in step S101, from pending scheduling authorization set, obtaining under current TTI has completely for base station
The uplink scheduling grant of the PHICH Candidate Sets of the first predetermined condition of foot.
Wherein, first predetermined condition includes any one of following：
- PHICH Candidate Sets are minimum or less；
- PHICH Candidate Sets are less than the first predetermined threshold；
Below so that first predetermined condition is minimum for PHICH Candidate Sets as an example, to illustrate that base station is awarded from pending scheduling
In power set, the uplink scheduling grant under current TTI with minimum PHICH Candidate Sets is obtained.
Example 1
For example, under current TTI, uplink scheduling grant in pending scheduling authorization set for g_x1, g_x2 ...,
G_x15 }, the number of its corresponding PHICH Candidate Set is { k0, k1 ..., k14 }, if k0 and k1 are { k0, k1 ..., k14 }
The number of PHICH Candidate Sets is minimum corresponding to middle minimum number, i.e. k0 and k1, then under the current TTI corresponding to k0 and k1
G_x1 and g_x2 in uplink scheduling grant set, it is that the up-link under current TTI with minimum PHICH Candidate Sets is adjusted
Degree authorizes.
In step s 102, base station obtains the up-link of the PHICH Candidate Sets for having and meeting the first predetermined condition
PHICH resource workable for scheduling authorization.
Below still so that first predetermined condition is minimum for PHICH Candidate Sets as an example, to illustrate that base station is obtained with minimum
PHICH resource workable for the uplink scheduling grant of PHICH Candidate Sets.
Example 2
For example, the PHICH resource that can be scheduled in uplink scheduling grant set under current TTI for G=g0,
G1 ..., g14 }, the number of its corresponding PHICH Candidate Set is { k0, k1 ..., k14 }, if k0 and k1 be k0, k1 ...,
K14 } in minimum number, i.e. the number of PHICH Candidate Sets is minimum corresponding to k0 and k1, then the current TTI corresponding to k0 and k1
Under uplink scheduling grant set in the PHICH resource g0 and g1 that can be scheduled, for minimum PHICH Candidate Sets
PHICH resource workable for uplink scheduling grant.
In step s 103, base station is adjusted from the up-link of the PHICH Candidate Sets for having and meeting the first predetermined condition
In PHICH resource workable for degree authorizes, it is determined that association authorizes the PHICH resource of number the second predetermined condition of satisfaction.
Wherein, second predetermined condition includes：
- association authorizes number minimum or less；
- association authorizes number to be less than the second predetermined threshold.
Minimum as PHICH Candidate Sets using first predetermined condition below, the second predetermined condition authorizes number minimum for association
Exemplified by, to illustrate PHICH resource workable for base station from the uplink scheduling grant with minimum PHICH Candidate Sets
In, it is determined that association authorizes the minimum PHICH resource of number.
Example 3
In the uplink scheduling grant set under current TTI according to corresponding to the k0 and k1 obtained in above-mentioned example 2
The PHICH resource g0 and g1 that can be scheduled, to can be used with the selection of the uplink scheduling grant of minimum PHICH Candidate Sets
PHICH resource.
For example, the PHICH resource that can be scheduled in uplink scheduling grant set under current TTI for G=g0,
G1 ..., g14 }, PHICH indexes corresponding to g0 are to for { p0_0, p1_0 ... }, indexing awarding to { p0_0, p1_0 ... } association
Flexible strategy are { m0_0, m1_0 ... }, select the PHICH indexes in { m0_0, m1_0 ... } corresponding to minimum value m0_0 to p0_0.Together
Reason, PHICH indexes of the g1 corresponding to it are to { p0_1, p1_1 ... } mandate number associated to for { p0_1, p1_1 ... }, indexing
{ m0_1, m1_1 ... }, the PHICH indexes in { m0_1, m1_1 ... } corresponding to minimum value m0_1 are selected to p0_1.
When being indexed corresponding to g0 to the mandate number m0_0 associated by p0_0, than index corresponding to g1 to awarding associated by p0_1
Flexible strategy m0_1 is small, then p0_0 is that association authorizes the minimum PHICH resource of number.
In step S104, the association is authorized number to meet that the PHICH resource of the second predetermined condition distributes to institute by base station
Stating has the uplink scheduling grant for the PHICH Candidate Sets for meeting the first predetermined condition under current TTI.
Still minimum as PHICH Candidate Sets using first predetermined condition below, the second predetermined condition also authorizes number for association
Exemplified by minimum, to illustrate that base station distributes to the PHICH resource that the association authorizes number minimum under the current TTI with minimum
The uplink scheduling grant of PHICH Candidate Sets.
Example 4
As described in above-mentioned example 3, p0_0 is that association authorizes the minimum PHICH resource of number, then p0_0 is distributed in base station
The g_x1 in uplink scheduling grant set described in example 1.
As described in example 1, under current TTI with minimum PHICH Candidate Sets uplink scheduling grant have it is multiple, i.e.,
If m0_0 is equal to m0_1, the uplink scheduling grant under current TTI with minimum PHICH Candidate Sets is g_x1 or g_x2,
Alternatively, one is randomly choosed from g_x1 or g_x2, such as g_x1, p0_0 is distributed to described uplink scheduling and awarded by base station
G_x1 in power set.
Alternatively, base station can also have the uplink scheduling of minimum PHICH Candidate Sets under the multiple current TTI
In mandate, the PRB call numbers corresponding to each uplink scheduling grant are selected to meet the uplink scheduling of the 3rd predetermined condition
Authorize.Such as the PRB call numbers corresponding to g_x1 are smaller than the PRB call numbers corresponding to g_x2, then g_x1 is selected, p0_0 is distributed
To the g_x1 in described uplink scheduling grant set.
Wherein, the 3rd predetermined condition includes：
- PRB call numbers are minimum or smaller；
- PRB call numbers are 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, the 3rd is predetermined
Condition is limited only to illustrate, and other are not illustrated but can also be used for the predetermined condition of the present invention, also should be included in this patent guarantor
Protect within scope, and be incorporated herein by reference.
In step S105, from the pending scheduling authorization set, deletion has distributed the up of PHICH resource for base station
Link scheduling mandate, grant column list is associated with PHICH resource to the list of PHICH Candidate Sets and is updated.
The uplink scheduling grant of PHICH resource will be distributed, deleted from pending scheduling authorization set, can
To avoid the PHICH resource repeated to identical uplink scheduling grant from distributing.
Base station associates grant column list with PHICH resource to the list of PHICH Candidate Sets and is updated, and is in order to will be allocated
PHICH resource is deleted from candidate queue, avoids duplicate allocation.
In step s 106, base station according to the uplink scheduling grant list after renewal, the list of PHICH Candidate Sets and
PHICH resource association grant column list repeats the step S101 to S105, until to the pending scheduling authorization set
Middle institute's scheduling authorization to be handled completes PHICH resource distribution.
The present embodiment obtains up with minimum PHICH Candidate Sets under current TTI from pending scheduling authorization set
PHICH resource workable for link scheduling mandate, and therefrom obtain association and authorize the minimum PHICH resource of number, will be acquired
The PHICH resource that association authorizes number minimum is distributed to the uplink scheduling with minimum PHICH Candidate Sets under current TTI and awarded
Power, it is possible to reduce the PHICH resource required for PUSCH transmission.
Fig. 2 shows according to another embodiment of the present invention a kind of in a wireless communication system for distributing PHICH resource
Method flow diagram, wherein, the step S201-S206 and above step S101-S106 in the embodiment described by 1 referring to the drawings
Identical, therefore not to repeat here, is incorporated herein by reference.In addition, embodiment illustrated in fig. 2 also includes step S207.
In step S207, before step S201, the scheduling of resource mandate to all PUSCH is completed.
Specifically, each PUSCH scheduling of resource mandate has multiple optional PHICH resources, if to each PUSCH resources
After scheduling authorization, the distribution with regard to carrying out PHICH resource, then the PHICH moneys that unpredictable follow-up PUSCH scheduling authorizations needs take
Source, and after PUSCH scheduling of resource mandate is fully completed, then it is each pending can be planned as a whole according to scheduling of resource situation for selection
Scheduling authorization needs the PHICH resource distributed so that PHICH resource distribution is more reasonable, so as in limited PHICH resource condition
Under, it is assigned to corresponding PHICH resource for all pending scheduling authorizations.
Alternatively, it is according to another embodiment of the present invention a kind of in a wireless communication system for distributing PHICH resource
Method can also include step S208.
Wherein, in step S208, base station by the quantity of the mandate of schedulable under each TTI be limited in predetermined threshold with
It is interior.
For example, as Ng=1/2, the quantity of the mandate of schedulable is limited within 15 under each TTI, and the schedulable is awarded
The quantity of power is related to the number of n_DMRS selectable value, can be drawn based on experience value based on n_DMRS selectable value number.
Wherein, n_DMRS is the parameter that PHICH resource is indicated in the uplink scheduling grant message corresponding to PUSCH, for referring to
Show the signaling of the PHICH code channel resources corresponding to the up PUSCH data transmission blocks of UE, be included in its corresponding uplink grant
In information.
Wherein, Ng=1/2 refers to that the total code channel numbers of PHICH are the half of up schedulable PRB sums.
Alternatively, Ng=1 or when 2, can not be limited the quantity of the mandate of schedulable under each TTI.
Pass through the present embodiment, it is ensured that unique PHICH resource can be assigned to for any PUSCH transmission, and
And the PRB of scheduling position is not limited.Also without reserved large numbers of PHICH resources, during such as Ng=1 or 2.
Fig. 3 show it is according to an embodiment of the invention it is a kind of in the base station of wireless communication system be used for distribute
The schematic device of PHICH resource.The device includes：First acquisition device 301, the second acquisition device 302, determining device 303,
Distributor 304, delete and updating device 305 and duplicating device 306.
Wherein, the first acquisition device 301, meet for from pending scheduling authorization set, obtaining to have under current TTI
The uplink scheduling grant of the PHICH Candidate Sets of first predetermined condition.
Wherein, first predetermined condition includes any one of following：
- PHICH Candidate Sets are minimum or less；
- PHICH Candidate Sets are less than the first predetermined threshold；
Below by first predetermined condition be PHICH Candidate Sets it is minimum exemplified by, to illustrate the first acquisition device 301 from treating
Handle in scheduling authorization set, obtain the uplink scheduling grant under current TTI with minimum PHICH Candidate Sets.
Example 5
For example, under current TTI, uplink scheduling grant in pending scheduling authorization set for g_x1, g_x2 ...,
G_x15 }, the number of its corresponding PHICH Candidate Set is { k0, k1 ..., k14 }, if k0 and k1 are { k0, k1 ..., k14 }
The number of PHICH Candidate Sets is minimum corresponding to middle minimum number, i.e. k0 and k1, then under the current TTI corresponding to k0 and k1
G_x1 and g_x2 in uplink scheduling grant set, it is that the up-link under current TTI with minimum PHICH Candidate Sets is adjusted
Degree authorizes.
Second acquisition device 302, the up-link for obtaining the PHICH Candidate Sets for having and meeting the first predetermined condition are adjusted
PHICH resource workable for degree authorizes.
Below still so that first predetermined condition is minimum for PHICH Candidate Sets as an example, to illustrate that the second acquisition device 302 obtains
PHICH resource workable for taking the uplink scheduling grant with minimum PHICH Candidate Sets.
Example 6
For example, the PHICH resource that can be scheduled in uplink scheduling grant set under current TTI for G=g0,
G1 ..., g14 }, the number of its corresponding PHICH Candidate Set is { k0, k1 ..., k14 }, if k0 and k1 be k0, k1 ...,
K14 } in minimum number, i.e. the number of PHICH Candidate Sets is minimum corresponding to k0 and k1, then the current TTI corresponding to k0 and k1
Under uplink scheduling grant set in the PHICH resource g0 and g1 that can be scheduled, for minimum PHICH Candidate Sets
PHICH resource workable for uplink scheduling grant.
Determining device 303, for the uplink scheduling from the PHICH Candidate Sets with the first predetermined condition of satisfaction
In PHICH resource workable for mandate, it is determined that association authorizes the PHICH resource of number the second predetermined condition of satisfaction.
Wherein, second predetermined condition includes：
- association authorizes number minimum or less；
- association authorizes number to be less than the second predetermined threshold.
Minimum as PHICH Candidate Sets using first predetermined condition below, the second predetermined condition authorizes number minimum for association
Exemplified by, workable for illustrating determining device 303 from the uplink scheduling grant with minimum PHICH Candidate Sets
In PHICH resource, it is determined that association authorizes the minimum PHICH resource of number.
Example 7
In the uplink scheduling grant set under current TTI according to corresponding to the k0 and k1 obtained in above-mentioned example 2
The PHICH resource g0 and g1 that can be scheduled, to can be used with the selection of the uplink scheduling grant of minimum PHICH Candidate Sets
PHICH resource.
For example, the PHICH resource that can be scheduled in uplink scheduling grant set under current TTI for G=g0,
G1 ..., g14 }, PHICH indexes corresponding to g0 are to for { p0_0, p1_0 ... }, indexing awarding to { p0_0, p1_0 ... } association
Flexible strategy are { m0_0, m1_0 ... }, select the PHICH indexes in { m0_0, m1_0 ... } corresponding to minimum value m0_0 to p0_0.Together
Reason, PHICH indexes of the g1 corresponding to it are to { p0_1, p1_1 ... } mandate number associated to for { p0_1, p1_1 ... }, indexing
{ m0_1, m1_1 ... }, the PHICH indexes in { m0_1, m1_1 ... } corresponding to minimum value m0_1 are selected to p0_1.
When being indexed corresponding to g0 to the mandate number m0_0 associated by p0_0, than index corresponding to g1 to awarding associated by p0_1
Flexible strategy m0_1 is small, then p0_0 is that association authorizes the minimum PHICH resource of number.
Distributor 304, it is described for authorizing number to meet that the PHICH resource of the second predetermined condition is distributed to the association
There is the uplink scheduling grant for the PHICH Candidate Sets for meeting the first predetermined condition under current transmission time interval.
Still minimum as PHICH Candidate Sets using first predetermined condition below, the second predetermined condition also authorizes number for association
Exemplified by minimum, to illustrate that distributor 304 distributes to the PHICH resource that the association authorizes number minimum under the current TTI
Uplink scheduling grant with minimum PHICH Candidate Sets.
Example 8
As described in above-mentioned example 3, p0_0 is that association authorizes the minimum PHICH resource of number, then distributor 304 is by p0_0
Distribute to the g_x1 in the uplink scheduling grant set described in example 1.
As described in example 1, under current TTI with minimum PHICH Candidate Sets uplink scheduling grant have it is multiple, i.e.,
If m0_0 is equal to m0_1, the uplink scheduling grant under current TTI with minimum PHICH Candidate Sets is g_x1 or g_x2,
Alternatively, one is randomly choosed from g_x1 or g_x2, such as g_x1, distributor 304 distributes to p0_0 described uplink
G_x1 in the scheduling authorization set of road.
Alternatively, distributor 304 can also have the up of minimum PHICH Candidate Sets under the multiple current TTI
In link scheduling mandate, the PRB call numbers corresponding to each uplink scheduling grant are selected to meet the up of the 3rd predetermined condition
Link scheduling mandate.Such as the PRB call numbers corresponding to g_x1 are smaller than the PRB call numbers corresponding to g_x2, then g_x1 is selected, will
P0_0 distributes to the g_x1 in described uplink scheduling grant set.
Then the distributor 304 can include：First choice module and the first distribute module.
First choice module（Not shown in figure）, for when predetermined with satisfaction first under the current transmission time interval
When the uplink scheduling grant of the PHICH Candidate Sets of condition has multiple, have under the multiple current transmission time interval
Meet in the uplink scheduling grant of PHICH Candidate Sets of the first predetermined condition, select each uplink scheduling grant institute right
The PRB call numbers answered meet the uplink scheduling grant of the 3rd predetermined condition.
First distribute module（Not shown in figure）, for the association to be authorized to the PHICH of number the second predetermined condition of satisfaction
Resource allocation gives the uplink under selected current transmission time interval with the PHICH Candidate Sets for meeting the first predetermined condition
Road scheduling authorization.
Wherein, the 3rd predetermined condition includes：
- PRB call numbers are minimum or smaller；
- PRB call numbers are 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, the 3rd is predetermined
Condition is limited only to illustrate, and other are not illustrated but can also be used for the predetermined condition of the present invention, also should be included in this patent guarantor
Protect within scope, and be incorporated herein by reference.
Deletion and updating device 305, for from the pending scheduling authorization set, PHICH have been distributed described in deletion
The uplink scheduling grant of resource, grant column list is associated with PHICH resource to the list of PHICH Candidate Sets and is updated.
The uplink scheduling grant of PHICH resource will be distributed, deleted from pending scheduling authorization set, can
To avoid the PHICH resource repeated to identical uplink scheduling grant from distributing.
Base station associates grant column list with PHICH resource to the list of PHICH Candidate Sets and is updated, and is in order to will be allocated
PHICH resource is deleted from candidate queue, avoids duplicate allocation.
Duplicating device 306, notify first acquisition device, the second acquisition device, determining device and distributor according to
Uplink scheduling grant list, the list of PHICH Candidate Sets after renewal associate grant column list with PHICH resource and repeated,
Until PHICH resource distribution is completed to institute's scheduling authorization to be handled in the pending scheduling authorization set.
The present embodiment obtains up with minimum PHICH Candidate Sets under current TTI from pending scheduling authorization set
PHICH resource workable for link scheduling mandate, and therefrom obtain association and authorize the minimum PHICH resource of number, will be acquired
The PHICH resource that association authorizes number minimum is distributed to the uplink scheduling with minimum PHICH Candidate Sets under current TTI and awarded
Power, it is possible to reduce the PHICH resource required for PUSCH transmission.
Fig. 4 show it is according to another embodiment of the present invention it is a kind of in the base station of wireless communication system be used for distribute
The schematic device of PHICH resource, wherein, the first acquisition device 401, the second acquisition device 402, determining device 403, distribution dress
Put 404, delete with updating device 405 and duplicating device 406 with above being obtained referring to the drawings first in the embodiment described by 3
Device 301, the second acquisition device 302, determining device 303, distributor 304, deletion and updating device 305 and duplicating device
306 is identical, and therefore not to repeat here, is incorporated herein by reference.In addition, embodiment illustrated in fig. 4 also includes scheduling authorization device
407。
Wherein, scheduling authorization device 407, for completing the scheduling of resource mandate to all PUSCH, and complete to all
After PUSCH scheduling of resource mandate, first acquisition device, the second acquisition device, determining device and distributor are notified
Perform operation.
Specifically, each PUSCH scheduling of resource mandate has multiple optional PHICH resources, if to each PUSCH resources
After scheduling authorization, the distribution with regard to carrying out PHICH resource, then the PHICH moneys that unpredictable follow-up PUSCH scheduling authorizations needs take
Source, and after PUSCH scheduling of resource mandate is fully completed, then it is each pending can be planned as a whole according to scheduling of resource situation for selection
Scheduling authorization needs the PHICH resource distributed so that PHICH resource distribution is more reasonable, so as in limited PHICH resource condition
Under, it is assigned to corresponding PHICH resource for all pending scheduling authorizations.
Alternatively, it is according to another embodiment of the present invention to be used to distribute PHICH resource in the base station of wireless communication system
Device can also include limits device.
Wherein, limits device（Not shown in figure）, it is predetermined for the quantity of the mandate of schedulable under each TTI to be limited in
Within threshold value.
For example, as Ng=1/2, the quantity of the mandate of schedulable is limited within 15 under each TTI, and the schedulable is awarded
The quantity of power is related to the number of n_DMRS selectable value, can be drawn based on experience value based on n_DMRS selectable value number.
Wherein, n_DMRS is the parameter that PHICH resource is indicated in the uplink scheduling grant message corresponding to PUSCH, for referring to
Show the signaling of the PHICH code channel resources corresponding to the up PUSCH data transmission blocks of UE, be included in its corresponding uplink grant
In information.
Wherein, Ng=1/2 refers to that the total code channel numbers of PHICH are the half of up schedulable PRB sums.
Alternatively, Ng=1 or when 2, can not be limited the quantity of the mandate of schedulable under each TTI.
Pass through the present embodiment, it is ensured that unique PHICH resource can be assigned to for any PUSCH transmission, and
And the PRB of scheduling position is not limited.Also without reserved large numbers of PHICH resources, during such as Ng=1 or 2.
It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example, this hair
Bright each device can use application specific integrated circuit（ASIC）Or any other is realized similar to hardware device.In one embodiment
In, software program of the invention can realize steps described above or function by computing device.Similarly, it is of the invention
Software program（Include the data structure of correlation）It can be stored in computer readable recording medium storing program for performing, for example, RAM memory,
Magnetically or optically driver or floppy disc and similar devices.In addition, some steps or function of the present invention can employ hardware to realize, example
Such as, coordinate as with processor so as to perform the circuit of each step or function.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.This
Outside, it is clear that the word of " comprising " one is not excluded for other units or step, and odd number is not excluded for plural number.That is stated in system claims is multiple
Unit or device can also be realized by a unit or device by software or hardware.The first, the second grade word is used for table
Show title, and be not offered as any specific order.
Claims (10)
1. a kind of method for being used to distribute PHICH resource in a wireless communication system, wherein, including：
The scheduling of resource mandate of-completion to all PUSCH；
- from pending scheduling authorization set, obtaining has the PHICH for meeting the first predetermined condition under current transmission time interval
The uplink scheduling grant of Candidate Set；Wherein, first predetermined condition includes：- PHICH Candidate Sets are minimum；
- obtain PHICH workable for the uplink scheduling grant of the PHICH Candidate Sets for having and meeting the first predetermined condition
Resource；
- provided from PHICH workable for the uplink scheduling grant of the PHICH Candidate Sets for having and meeting the first predetermined condition
In source, it is determined that association authorizes the PHICH resource of number the second predetermined condition of satisfaction；Wherein, second predetermined condition includes：- close
Connection authorizes number minimum；
- distribute to the PHICH resource of association mandate number second predetermined condition of satisfaction under the current transmission time interval
Uplink scheduling grant with the PHICH Candidate Sets for meeting the first predetermined condition.
2. the method according to claim 11, wherein, it is described to authorize number to meet the second predetermined condition the association
PHICH resource is distributed under the current transmission time interval with the up of the PHICH Candidate Sets for meeting the first predetermined condition
The step of link scheduling mandate, includes：
- when the uplink scheduling under the current transmission time interval with the PHICH Candidate Sets for meeting the first predetermined condition
When mandate has multiple, there is the PHICH Candidate Sets of the first predetermined condition of satisfaction under the multiple current transmission time interval
In uplink scheduling grant, the PRB call numbers corresponding to each uplink scheduling grant are selected to meet the 3rd predetermined condition
Uplink scheduling grant；Wherein, the 3rd predetermined condition includes：- PRB call numbers are minimum；
- authorize number to meet that the PHICH resource of the second predetermined condition is distributed between selected current transmission time the association
Every the uplink scheduling grant of the lower PHICH Candidate Sets for having and meeting the first predetermined condition.
3. method according to claim 1 or 2, wherein, in addition to：
- from the pending scheduling authorization set, the uplink scheduling grant for having distributed PHICH resource is deleted, to PHICH
Candidate Set list associates grant column list with PHICH resource and is updated.
4. the method according to claim 11, wherein, in addition to：
- grant column list associated with PHICH resource according to the uplink scheduling grant list after renewal, PHICH Candidate Set lists
All steps in claim 1 are repeated, until being awarded to institute's scheduling to be handled in the pending scheduling authorization set
Power completes PHICH resource distribution.
5. method according to claim 1 or 2, wherein, in addition to：
- quantity of the mandate of schedulable under each Transmission Time Interval is limited within predetermined threshold.
6. a kind of device for being used to distribute PHICH resource in the base station of wireless communication system, wherein, including：
Scheduling authorization device, for completing the scheduling of resource mandate to all PUSCH, and complete the resource to all PUSCH
After scheduling authorization, following first acquisition device is notified, the second acquisition device, determining device and distributor perform operation；
First acquisition device, for from pending scheduling authorization set, obtain under current transmission time interval to have and meet the
The uplink scheduling grant of the PHICH Candidate Sets of one predetermined condition；Wherein, first predetermined condition includes：- PHICH is waited
Selected works are minimum；
Second acquisition device, for obtaining the uplink scheduling with the PHICH Candidate Sets for meeting the first predetermined condition
PHICH resource workable for mandate；
Determining device, can for the uplink scheduling grant from the PHICH Candidate Sets with the first predetermined condition of satisfaction
In the PHICH resource used, it is determined that association authorizes the PHICH resource of number the second predetermined condition of satisfaction；Wherein, described second is predetermined
Condition includes：- association authorizes number minimum；
Distributor, for authorizing number to meet that the PHICH resource of the second predetermined condition works as forward pass described in distributing to the association
There is the uplink scheduling grant for the PHICH Candidate Sets for meeting the first predetermined condition under defeated time interval.
7. device according to claim 6, wherein, the distributor includes：
First choice module, for as the PHICH candidates under the current transmission time interval with the first predetermined condition of satisfaction
When the uplink scheduling grant of collection has multiple, have under the multiple current transmission time interval and meet the first predetermined condition
PHICH Candidate Sets uplink scheduling grant in, select the PRB call numbers corresponding to each uplink scheduling grant to meet
The uplink scheduling grant of 3rd predetermined condition；Wherein, the 3rd predetermined condition includes：- PRB call numbers are minimum；
First distribute module, it is selected for authorizing number to meet that the PHICH resource of the second predetermined condition is distributed to the association
Current transmission time interval under have meet the first predetermined condition PHICH Candidate Sets uplink scheduling grant.
8. the device according to claim 6 or 7, wherein, in addition to：
Deletion and updating device, for from the pending scheduling authorization set, deleting the uplink for having distributed PHICH resource
Road scheduling authorization, grant column list is associated with PHICH resource to the list of PHICH Candidate Sets and is updated.
9. device according to claim 8, wherein, in addition to：
Duplicating device, for notifying first acquisition device, the second acquisition device, determining device and distributor are according to renewal
Uplink scheduling grant list, the list of PHICH Candidate Sets afterwards associates grant column list with PHICH resource and repeated, until
PHICH resource distribution is completed to institute's scheduling authorization to be handled in the pending scheduling authorization set.
10. the device according to claim 6 or 7, wherein, in addition to：
Limits device, for the quantity of the mandate of schedulable under each Transmission Time Interval to be limited within predetermined threshold.
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| CN110048816B (en) * | 2018-01-15 | 2021-08-24 | 海能达通信股份有限公司 | Distribution method, device and equipment of PHICH group |
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