CN102137496A - Method and device for joint dispatching of PUSCH (physical uplink shared channel) resources and PHICH (physical hybrid automatic repeat request indicator channel) resources - Google Patents

Method and device for joint dispatching of PUSCH (physical uplink shared channel) resources and PHICH (physical hybrid automatic repeat request indicator channel) resources Download PDF

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CN102137496A
CN102137496A CN2011100588984A CN201110058898A CN102137496A CN 102137496 A CN102137496 A CN 102137496A CN 2011100588984 A CN2011100588984 A CN 2011100588984A CN 201110058898 A CN201110058898 A CN 201110058898A CN 102137496 A CN102137496 A CN 102137496A
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resource
prb
current
pusch
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CN102137496B (en
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胡奕
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

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Abstract

The invention discloses a method and device for joint dispatching of PUSCH (physical uplink shared channel) resources and PHICH (physical hybrid automatic repeat request indicator channel) resources, and the method and device provided by the invention are applicable to a PUSCH single-antenna transmission communication system in which UE (user equipment) is provided with same user-level DMRS (demodulation reference signal) cyclic shifts. The method comprises the following step: allocating PUSCH resources and PHICH resources for UE based on the sequence of the priorities of UE to be dispatched from high to low, wherein as for each UE with allocated PUSCH resources and PHICH resources, the process for allocating the PUSCH resources and the PHICH resources is as follows: determining the initial position of a PRB (physical resource block) resource incapable of finishing PUSCH transmission for the current UE based on the available condition of the current PHICH resources and the user-level DMRS cyclic shift of the current UE; allocating PUSCH resources for the current UE based on the available condition of the current PUSCH resources and the initial position of the PRB resource incapable of finishing PUSCH transmission for the current UE; and allocating PHICH resources for the current UE based on the PUSCH resource allocation result of the current UE and the user-level DMRS cyclic shift of the current UE. According to the invention, the PHICH resources allocated to each UE can be prevented from confliction while the PUSCH resources and the PHICH resources are allocated to each UE.

Description

The combined scheduling method of PUSCH resource and PHICH resource and device thereof
Technical field
The present invention relates to communication technical field, relate in particular to the combined scheduling method and the device thereof of a kind of PUSCH resource and PHICH resource.
Background technology
LTE(Long Term Evolution, Long Term Evolution) the supported maximum system bandwidth of system is 20MHz, in order to support broadband system better, the LTE system adopts SC-FDMA(Single Carrier – Frequency Division Multiple Access, single-carrier frequency division multiple access), at frequency domain whole wideband frequency selective channel is divided into a plurality of smooth subchannels, mutually orthogonal between each subchannel.Under the situation of multi-user service coexistence, can distribute running time-frequency resource to carry out transfer of data neatly.Assignable minimal physical resource units is PRB(Physical Resource Block, Physical Resource Block), continuous width is that the physical resource of 180kHz becomes a PRB on time slot frequency domain.In order to support PUSCH(Physical Uplink Shared Channel, Physical Uplink Shared Channel) single-carrier property of transmission, the PUSCH resource adopts the mode of continuous dispensing, promptly requires to distribute to a PRB resource that the user is continuous.
In order to improve resource utilization and throughput of system, satisfy the QoS(Quality of Service of miscellaneous service, QoS) demand, LTE system are used shared channel mechanism, and the mode by Dynamic Resource Allocation for Multimedia realizes each user in the system, each professional resource-sharing.Be used for UE(User Equipment, user terminal) the channel of transmitting uplink data be called PUSCH.
The LTE system uses PHICH(Physical Hybrid ARQ Indicator Channel, hybrid automatic repeat request indication channel) transmission mixes automatic repeat requests at the HARQ(Hybrid Automatic Repeat Request of PUSCH packet) feedback (ACK/NACK) information.UE is according to this feedback information decision whether carrying out re-transmission of PUSCH packet.There are the certain time sequence relation in descending ACK/NACK feedback and corresponding PUSCH transmission, and therefore for the transmission of the PUSCH on the same subframe, its corresponding ACK/NACK feedback is also carried out at same descending sub frame.The PHICH resource is mapped to the control area of descending sub frame.According to system configuration system's PHICH resource is divided into several PHICH groups, each PHICH group takies different running time-frequency resources; The ACK/NACK information that each PHICH group can be carried a plurality of UE, the ACK/NACK of different UEs carries out code division multiplexing in the same PHICH group, and the ACK/NACK number of bits upper limit that can carry out code division multiplexing is determined.Therefore, the PHICH resource of UE is by a pair of numbering Sign, wherein
Figure 591906DEST_PATH_IMAGE002
Be PHICH group sequence number,
Figure 2011100588984100002DEST_PATH_IMAGE003
Be the orthogonal sequence numbering in a group, the concrete computing formula of these two numberings is:
Figure 608403DEST_PATH_IMAGE004
…………[1]
Wherein,
Figure 2011100588984100002DEST_PATH_IMAGE005
Be and the corresponding PDCCH(Physical Downlink Control Channel of PUSCH transmission, Physical Downlink Control Channel) the DMRS(Demodulation reference signal of indication in, demodulation reference mark) cyclic shift value, if the PUSCH transmission of the PUSCH of semi-continuous scheduling correspondence or accidental access response scheduling
Figure 44064DEST_PATH_IMAGE006
Be made as 0;
Figure 2011100588984100002DEST_PATH_IMAGE007
It is the spreading factor size of PHICH modulation;
Figure 189612DEST_PATH_IMAGE008
It is the minimum PRB sequence number that corresponding PUSCH transmits first time slot allocation;
Figure 2011100588984100002DEST_PATH_IMAGE009
It is PHICH group number;
Figure 15617DEST_PATH_IMAGE010
。
Can see that by above formula the PHICH resource location of UE is that minimum PRB sequence number and user class DMRS cyclic shift determined jointly in the resource that is taken by PUSCH transmission.
When carrying out uplink scheduling, at first all UE use identical in the default cell at present
Figure 898122DEST_PATH_IMAGE005
, after finishing the PUSCH resource allocation, according to the PUSCH resource allocation result and
Figure 522762DEST_PATH_IMAGE005
Initial value calculates the PHICH resource location, adjusts if find the PHICH resource contention then pass through
Figure 402993DEST_PATH_IMAGE005
Attempt changing the PHICH resource location, if can be assigned to the PHICH resource, then current UE is dispatched successfully; Otherwise this does not dispatch current UE.
The inventor finds that there is following defective at least in prior art in realizing process of the present invention:
Present dispatching method is to distribute the PUSCH resource earlier, distributes the PHICH resource by adjusting user class DMRS cyclic shift after finishing the PUSCH resource allocation.Adopt this method, under the situation of PHICH resource contention, adjust user class DMRS cyclic shift on the one hand and have certain complexity; On the other hand, the DMRS cyclic shift of each UE is determined jointly by cell-level DMRS cyclic shift and user class DMRS cyclic shift.Under identical networking, use identical PUSCH resource to carry out the user of transfer of data for neighbor cell, need to distribute different DMRS cyclic shifts to guarantee that the mutual orthogonality of its DMRS is to reduce the minizone co-channel interference.Can guarantee that by allocating cell level DMRS cyclic shift the co-channel interference of minizone minimizes.For following this principle, need take into account different districts when giving each UE distributing user level DMRS cyclic shift uses identical PUSCH resource to carry out the user's of transfer of data the distribution condition of user class DMRS cyclic shift, be that the user that neighbor cell uses identical PUSCH resource to carry out transfer of data need distribute identical user DMRS cyclic shift, therefore above limiting factor has limited the degree of freedom that user class DMRS adjusts to a great extent when the PHICH resource contention occurring, thereby influence is to the scheduling of UE, increase the transmission of uplink data time delay, be unfavorable for guaranteeing QoS of survice.
Summary of the invention
The embodiment of the invention provides the combined scheduling method and the device thereof of a kind of PUSCH resource and PHICH resource, in order to when distributing the PUSCH resource for UE also for this UE is assigned to the PHICH resource, and guarantee that the PHICH resource between each UE can not conflict.
The PUSCH resource that the embodiment of the invention provides and the combined scheduling method of PHICH resource are applied to PUSCH single antenna transmissions communication system, and the UE in the described communication system disposes identical user class DMRS cyclic shift, and this method may further comprise the steps:
Determine to wait to dispatch the priority of UE, according to priority order from high to low, for described UE distributes PUSCH resource and PHICH resource; Wherein, distributed the UE of PUSCH resource and PHICH resource for each, the PUSCH resource of described UE and the assigning process of PHICH resource comprise:
Can determine the initial PRB resource location that can not transmit with the user class DMRS cyclic shift of situation and current UE according to current PHICH resource as the PUSCH of current UE;
According to current PUSCH resource can be that current UE is distributed the PUSCH resource with situation and the initial PRB resource location that can not transmit as the PUSCH of current UE;
According to the PUSCH resource allocation result of current UE, and the user class DMRS cyclic shift of current UE, for current UE is distributed the PHICH resource.
The resource scheduling device that the embodiment of the invention provides is applied to PUSCH single antenna transmissions communication system, and the UE in the described communication system disposes identical user class DMRS cyclic shift, and this device comprises:
The priority determination module, the priority that is used to determine to wait to dispatch UE;
Resource distribution module is used for according to priority order from high to low, for described UE distributes PUSCH resource and PHICH resource; Wherein, distributed the UE of PUSCH resource and PHICH resource for each, in the PUSCH resource of described UE and the assigning process of PHICH resource, can determine the initial Physical Resource Block PRB resource location that can not transmit with the user class DMRS cyclic shift of situation and current UE according to current PHICH resource as the PUSCH of current UE; According to current PUSCH resource can be that current UE is distributed the PUSCH resource with situation and the initial PRB resource location that can not transmit as the PUSCH of current UE; According to the PUSCH resource allocation result of current UE, and the user class DMRS cyclic shift of current UE, for current UE is distributed the PHICH resource.
In the above embodiment of the present invention, can use the user class DMRS cyclic shift of situation and current UE according to current PHICH resource, definite initial PRB resource location that can not transmit as the PUSCH of current UE, and when distributing the PUSCH resource for current UE, with determine can not as the initial PRB resource location of the PUSCH of current UE transmission as distribute according to one of, like this when according to the PUSCH resource of distributing being current UE distribution PHICH resource, can guarantee that the PHICH resource between each UE can not conflict, and when distributing the PUSCH resource, also be assigned to the PHICH resource for this UE for UE.
Description of drawings
The PHICH resource that Fig. 1 provides for the embodiment of the invention and the schematic flow sheet of PUSCH resource combined dispatching;
Fig. 2 is the schematic flow sheet of step 103 in the flow process shown in Figure 1;
Fig. 3 is 0 o'clock PRB sequence number and PHICH resource mapping relations figure for user class DMRS cyclic shift in the embodiment of the invention;
Fig. 4 is the schematic flow sheet of step 104 in the flow process shown in Figure 1;
The structural representation of the resource allocation device that Fig. 5 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention proposes the technical scheme of a kind of PHICH resource and PUSCH resource combined dispatching.In this technical scheme, at first determine to participate in the UE priority query of frequency domain dispatching based on known time domain dispatching method, UE for each frequency domain dispatching, at first determine its user class DMRS cyclic shift, and the current PHICH resource of coupling system can determine with situation can not be as the initial PRB sequence number of the PUSCH transmission of this UE, according to this limiting factor current UE is carried out the PUSCH resource allocation then, after the PUSCH resource allocation of finishing current UE, its corresponding PHICH resource has also just been determined.This method also for this UE is assigned to the PHICH resource, and guarantees that the PHICH resource between each UE can not conflict when distributing the PUSCH resource for UE, guaranteed the transmission performance of PUSCH and PHICH simultaneously.
Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.
Referring to Fig. 1, the PHICH resource that provides for the embodiment of the invention and the schematic flow sheet of PUSCH resource combined dispatching.This flow process is applicable to the single antenna transmissions of PUSCH, is called for short MU-MIMO in the sub-district after promptly not considering to adopt virtual MU-MIMO() situation, do not consider that promptly the user of same sub-district uses identical PUSCH resource to carry out the situation of transfer of data.As shown in the figure, this process can comprise:
Step 101 is determined the user class DMRS cyclic shift value of UE in the system.Under the single antenna transmissions scene, for the identical user class DMRS cyclic shift of all UE configurations, such as all being configured to 0.
Step 102, the domain scheduling when UE in the current system is carried out, definite UE priority query that participates in frequency domain dispatching.
Step 103, the priority of the UE that the UE(that takes out limit priority from the UE priority query that participates in frequency domain dispatching takes out from head of the queue usually is the highest), can use situation according to current system PHICH resource, user class DMRS cyclic shift in conjunction with current UE, determine the initial PRB resource location that can not transmit as the PUSCH of current UE, promptly, determine such PRB resource location, the PRB resource of described PRB resource location can not be as the initial PRB resource in the continuous P RB resource that can distribute to current UE.
Step 104 can be used situation according to the current PUSCH of system, and step 103 determines can not be that current UE is distributed the PUSCH resource as the initial PRB resource location of the PUSCH of this UE transmission.
Step 105, according to the PUSCH resource allocation result of current UE, and the definite user class DMRS cyclic shift of step 101, determine corresponding PHICH resource, with this PHICH resource dispensing current UE.
Concrete, after the initial PRB position of distributing to UE and user class DMRS cyclic shift are determined, just can be defined as this UE distribution PHICH resource according to the PHICH resource computing formula that formula [1] provides.
Step 106, update system can be used PUCCH resource and available PHICH resource, deletes current UE from frequency domain dispatching UE priority query.
Step 107 is if UE priority query then changes step 103 over to not for empty and current system also have available PUSCH resource and PHICH resource; Otherwise this finishing scheduling withdraws from flow process.
In the step 103 in the flow process shown in Figure 1, can use situation,, determine the process of the initial PRB resource location that can not transmit, can comprise as shown in Figure 2 as the PUSCH of this UE in conjunction with the user class DMRS cyclic shift of current UE according to current system PHICH resource:
Step 201 according to the system resource configuration, is determined PRB resource and PHICH resource mapping relation.
Concrete, can see from the computing formula [1] of PHICH resource, when be when all UE distribute identical user class DMRS cyclic shift in the system, the minimum PRB resource sequence number of PUSCH transmission correspondence And there is following rule in the mapping relations between the PHICH resource:
(1) adjacent
Figure 716294DEST_PATH_IMAGE012
Be mapped to adjacent PHICH group;
(2) be spaced apart
Figure 573129DEST_PATH_IMAGE009
Figure DEST_PATH_IMAGE013
Be mapped to identical PHICH group, and distinguish by orthogonal sequence.
In the LTE system, suppose that the PUSCH resource comprises 50 PRB, system PHICH is configured to
Figure 983382DEST_PATH_IMAGE014
,
Figure DEST_PATH_IMAGE015
, according to above rule, under current supposing the system resource distribution, when user class DMRS cyclic shift value is 0,
Figure 972198DEST_PATH_IMAGE008
To PHICH resource mapping relation as shown in Figure 3, each lattice is represented a PHICH resource among the figure, the PHICH resource of each row is one group, the orthogonal sequence numbering that the PHICH resource of different rows is corresponding different, the numeral in the grid is mapped to the PUSCH PRB resource number of this PHICH resource correspondence.Wherein, adjacent
Figure 897429DEST_PATH_IMAGE013
Be mapped to adjacent PHICH group, PRB 0 as shown in Figure 3 is mapped to PHICH group 0, and PRB 1 is mapped to PHICH group 1, by that analogy; Be spaced apart
Figure 557955DEST_PATH_IMAGE009
Figure 557135DEST_PATH_IMAGE013
Be mapped to identical PHICH group, PRB 0 as shown in Figure 3, PRB 3, PRB 6 ... be mapped to same group (PHICH group 0).
Step 202 can be used situation according to current system PHICH resource, determines the initial PRB sequence number that can not transmit as the PUSCH of current UE.
Concrete, can concern according to PRB resource and the PHICH resource mapping that step 201 is determined, with the pairing PRB sequence number of the PHICH resource of distributing to other UE, be defined as distributing to the PRB resource location of current UE as initial PRB.It still is example with Fig. 3, suppose that the PHICH resource that white lattice is represented among Fig. 3 is current available PHICH resource, the PHICH resource that oblique line filling lattice is represented is for having distributed to the PHICH resource of other UE, then for current UE, PRB 0, PRB 7, PRB 15, PRB 24, PRB 31, PRB 39, PRB 48, these PRB can not distribute to the initial PRB of current UE as the PUSCH transmission.
In the step 104 in the flow process shown in Figure 1, can use situation according to the current PUSCH of system, and the initial PRB resource location that can not transmit as the PUSCH of current UE, the process for current UE distribution PUSCH resource can comprise as shown in Figure 4:
Step 401 according to current available PUSCH resource situation, is determined available continuous P RB resource segmentation.
Concrete, for the current available PRB resource of system, the principle continuous according to the PRB resource merges, and obtains available continuous P RB segmentation.For ease of describing, in the present embodiment, the quantity of the available continuous P RB segmentation that obtains is designated as K, the PRB number that each available continuous P RB segmentation comprises is designated as respectively
Figure 779169DEST_PATH_IMAGE016
(
Figure DEST_PATH_IMAGE017
).
Step 402 determines that according to current UE data to be transmitted amount needs are the PRB quantity that current UE is distributed.
Determine that according to UE data to be transmitted amount needs are that the method for the current UE PRB quantity of distributing is a lot, estimation that can be rough, as estimating in the average channel quality of whole system bandwidth according to current UE, this moment, the PRB number of required distribution was above-mentioned estimated value for each available continuous P RB segmentation.The embodiment of the invention preferably adopts the average CQI on the PRB that comprises according to each available continuous P RB segmentation respectively the PRB number demand of each available continuous P RB segmentation to be estimated, it mainly is the otherness of considering UE CQI on each PRB, obviously, this method is more accurate than the former.Concrete, for each available continuous P RB segmentation, based on the CQI(Channel Quality Indicator of current UE on these PRB, CQI), according to AMC(Adaptive Modulation Coding, Adaptive Modulation and Coding) algorithm is determined corresponding MCS(Modulation and Coding Scheme, Modulation and Coding Scheme), and calculate this MCS of use according to current UE data to be transmitted amount and carry out the PRB number that the transfer of data needs distribute
Figure 565597DEST_PATH_IMAGE018
(
Figure 531279DEST_PATH_IMAGE017
).
Step 403, the PRB quantity of distributing for current UE is carried out PRB preassignment for current UE respectively in each available continuous P RB segmentation as required.
In this step,, can select the interior optimum resource of this continuous P RB segmentation, promptly in each available continuous P RB segmentation, carry out PRB preassignment by carrying out the sliding window operation for each available continuous P RB segmentation.
Concrete, for available continuous P RB segmentation
Figure DEST_PATH_IMAGE019
( ), determine that at first the sliding window window of this available continuous P RB segmentation is long:
……[2]
Suppose according to the initial PRB resource collection that can not distribute to current UE that current system PHICH resource can be determined with situation to be
Figure DEST_PATH_IMAGE021
, then can distinguish in the following way and handle at different situations:
Situation one: if
Figure 989308DEST_PATH_IMAGE022
, show that then the PRB quantity that current available continuous P RB segmentation is comprised is less than or equal to the needed PRB quantity of current UE.For Available continuous P RB segmentation, do not need to carry out sliding window.If the initial PRB of this available continuous P RB segmentation does not belong to set
Figure 794770DEST_PATH_IMAGE021
, then all the PRB resources in this available continuous P RB segmentation are the pre-allocation resource of corresponding available continuous P RB segmentation; Otherwise, will remove in this available continuous P RB segmentation the residue continuous P RB resource behind the initial PRB as the pre-segmentation resource of this available PRB contiguous segmentation.
Situation two: if
Figure DEST_PATH_IMAGE023
, show that then PRB quantity that current available continuous P RB segmentation comprised is greater than the needed PRB quantity of current UE.For Available continuous P RB segmentation, need to carry out sliding window.Suppose before this available continuous P RB segmentation
Figure 916364DEST_PATH_IMAGE024
Have among the individual PRB
Figure DEST_PATH_IMAGE025
Individual PRB belongs to set
Figure 223849DEST_PATH_IMAGE021
(promptly can not as the initial PRB that distributes), then the number of times of execution sliding window be in this available continuous P RB segmentation
Figure 52128DEST_PATH_IMAGE026
Optimum (the highest as average CQI) in this available PRB segmentation picked out in operation based on sliding window
Figure DEST_PATH_IMAGE027
Individual continuous P RB resource.
Further, if in above-mentioned situation one or the situation two, for each available continuous P RB segmentation, according to PRB pre-allocation of resources result, if the PRB number that the PRB number of therefrom selecting comprises less than this available continuous P RB segmentation, there is some difference owing to the CQI of UE on each PRB, need this moment recomputate corresponding MCS according to the AMC algorithm according to the CQI on these PRB that select, and further determine on these PRB, to use this MCS mode to carry out transfer of data can the data carried by data amount.
Step 404 is by comparing the PRB pre-allocation of resources result of each available continuous P RB segmentation, the final decision of making resource allocation.
The basic thought of resource allocation decisions is the QoS(Quality of Service that preferentially guarantees UE, service quality) requirement is the demand that guarantees the UE transfer of data specific to each resource allocation, on this basis, improve the efficient of transfer of data, to improve system spectral efficiency as far as possible.Based on above principle, the embodiment of the invention is according to the Data-carrying ability and the efficiency of transmission of each preassignment PRB resource, determine the priority of each preassignment PRB resource, select the highest preassignment PRB resource of its medium priority, give current UE as the PUSCH resource allocation, concrete, preferably adopt following resource allocation decisions method:
At first, according to preallocated continuous P RB in current UE data to be transmitted amount and each the continuous P RB segmentation can data quantity transmitted comparative result, all PRB preassignment results are divided into two S set 1 and S2: the PRB preassignment result who data transmission capabilities is not less than the transfer of data demand is divided into S set 1; Data transmission capabilities is divided into S set 2 less than the PRB preassignment result of transfer of data demand.Obviously, the PRB preassignment result who satisfies the transfer of data demand has higher priority, and promptly the priority of two set is: S1〉S2;
Then, for each the PRB preassignment result in the S set 1, because its Data-carrying ability satisfies the transfer of data demand, in order to guarantee efficiency of transmission, can come to determine respectively the priority orders of each preassignment PRB with each self-corresponding MCS of each preallocated PRB in conjunction with the priority of S set 1.MCS is high more, and efficiency of transmission is high more, and corresponding usually PRB number is few more, and its priority is also high more.
For each the PRB preassignment result in the S set 2, because its Data-carrying ability does not satisfy the transfer of data demand, in order to guarantee real time of data transmission as far as possible, can be in conjunction with the priority of S set 2, can carry data volume as the Determination of priority standard with preallocated PRB, it is big more to carry data volume, and corresponding priorities is high more.
At last, select priority the highest among the PRB pre-allocation of resources result of each the available continuous P RB segmentation from S set 1 and S set 2, as the final result of PUSCH resource allocation.
More than by comparing the PRB pre-allocation of resources result of each available continuous P RB segmentation, the implementation of making the final decision of resource allocation only is a kind of optimal way, if the resource allocation policy difference requires to be higher than qos requirement as efficiency of transmission, then the corresponding meeting that is provided with of priority height changes to some extent.In addition, according to data transmission capabilities, preassignment PRB is at first assigned to different sets, just realize for the ease of technology, those skilled in the art should be able to carry out resource decision by similar fashion based on above-mentioned basic thought, as not dividing different sets, but predesignate the rule that priority is set according to data transmission capabilities and efficiency of transmission, and the weights of data transmission capabilities are set to be higher than the weights of efficiency of transmission.
In the PHICH resource that the above embodiment of the invention proposes and the combined scheduling method of PUSCH resource, UE for each frequency domain dispatching, at first determine its user class DMRS cyclic shift, and the current PHICH resource of coupling system can determine with situation can not be as the initial PRB sequence number of the PUSCH transmission of this UE, according to this limiting factor current UE is carried out the PUSCH resource allocation then, after the PUSCH resource allocation of finishing current UE, its corresponding PHICH resource has also just been determined.This method also for this UE is assigned to the PHICH resource, and guarantees that the PHICH resource between each UE can not conflict when distributing the PUSCH resource for UE, guaranteed the transmission performance of PUSCH and PHICH simultaneously.
Based on identical technical conceive, the embodiment of the invention also provides a kind of resource scheduling device that can be applicable to above-mentioned flow process, and this device can be a base station equipment.
Referring to Fig. 5, the structural representation of the resource scheduling device that provides for the embodiment of the invention is applied to PUSCH single antenna transmissions communication system, and the UE in the described communication system disposes identical user class DMRS cyclic shift.As shown in the figure, this device can comprise:
Priority determination module 501, the priority that is used to determine to wait to dispatch UE;
Resource distribution module 502 is used for according to priority order from high to low, for described UE distributes PUSCH resource and PHICH resource; Wherein, distributed the UE of PUSCH resource and PHICH resource for each, in the PUSCH resource of described UE and the assigning process of PHICH resource, can determine the initial Physical Resource Block PRB resource location that can not transmit with the user class DMRS cyclic shift of situation and current UE according to current PHICH resource as the PUSCH of current UE; According to current PUSCH resource can be that current UE is distributed the PUSCH resource with situation and the initial PRB resource location that can not transmit as the PUSCH of current UE; According to the PUSCH resource allocation result of current UE, and the user class DMRS cyclic shift of current UE, for current UE is distributed the PHICH resource.
In the above-mentioned resource scheduling device, resource distribution module 502 can specifically be used for, and determines PRB resource and PHICH resource mapping relation, and is wherein, adjacent
Figure 285401DEST_PATH_IMAGE028
Be mapped to adjacent PHICH group, be spaced apart
Figure DEST_PATH_IMAGE029
Be mapped to identical PHICH group, wherein,
Figure 943095DEST_PATH_IMAGE028
For PUSCH transmits the minimum PRB sequence number of first time slot allocation,
Figure 891460DEST_PATH_IMAGE029
Be PHICH group quantity; And, according to described mapping relations,, be defined as the initial PRB resource location that can not transmit as the PUSCH of current UE with the pairing PRB sequence number of the PHICH resource of having distributed.
In the above-mentioned resource scheduling device, resource distribution module 502 can specifically be used for, and can use situation according to current system PUSCH resource, determines available continuous P RB segmentation, and the required PRB quantity of definite current UE; The PRB quantity required according to current UE is selected optimum PRB resource for current UE in each available continuous P RB segmentation, as the preassignment PRB resource in the corresponding available continuous P RB segmentation; And, according to the Data-carrying ability and the efficiency of transmission of each preassignment PRB resource, determine the priority of each preassignment PRB resource, select the highest preassignment PRB resource of its medium priority, give current UE as the PUSCH resource allocation.
In the above-mentioned resource scheduling device, resource distribution module 502 can specifically be used for, in the PRB quantity required according to current UE, in each available continuous P RB segmentation, select optimum PRB resource for current UE, in the process as the preassignment PRB resource in the corresponding available continuous P RB segmentation, for each available continuous P RB segmentation, carry out following operation:
The window of sliding window that is identified for current available continuous P RB segmentation is long
Figure 295634DEST_PATH_IMAGE030
,
Figure DEST_PATH_IMAGE031
, wherein,
Figure 329449DEST_PATH_IMAGE032
Be the required PRB quantity of current UE,
Figure DEST_PATH_IMAGE033
The PRB quantity that is comprised for current available continuous P RB segmentation;
If , and the initial PRB of current available continuous P RB segmentation can be used as the initial PRB resource location of the PUSCH transmission of current UE, then with all PRB in the current available continuous P RB segmentation as pre-allocation resource;
If
Figure 781607DEST_PATH_IMAGE034
, and the initial PRB of current available continuous P RB segmentation can not be as the initial PRB resource location of the PUSCH of current UE transmission, then will remove in the current available continuous P RB segmentation residue continuous P RB behind the initial PRB as pre-allocation resource;
If , then from current available continuous P RB segmentation, select optimum PRB as pre-allocation resource by carrying out the sliding window operation, the selected PRB quantity that goes out is grown consistent with window.Wherein, Zui You PRB can be the highest PRB of average CQI.
Above-mentioned resource scheduling device also can comprise: transmitted data amount determination module 503, during the PRB quantity that is used for being comprised less than the available continuous P RB segmentation of correspondence in the quantity of preassignment PRB, CQI according to preassignment PRB determines corresponding Modulation and Coding Scheme MCS, can the data carried by data amount when determining to use on described preassignment PRB described MCS to carry out transfer of data.
In the above-mentioned resource scheduling device, resource distribution module 502 can specifically be used for, when distributing the PUSCH resource for current UE, all preassignment PRB are divided into two set, wherein, preassignment PRB in first set can the data carried by data amount be not less than current UE data volume waiting for transmission, the preassignment PRB in second set can the data carried by data amount less than current UE data volume waiting for transmission; And the priority that first set is set is higher than the priority of second set; For first set,, the priority of each preassignment PRB is set according to the MCS of each preassignment PRB correspondence wherein and the priority of first set; Wherein, high priority is high more more for MCS; For second set, can the data carried by data amount and the priority of second set according to each preassignment PRB wherein, the priority of each preassignment PRB is set; Wherein, can the big more priority of data carried by data amount high more; From first set and second set, select the highest preassignment PRB of priority, give current UE as the PUSCH resource allocation.
In the above-mentioned resource scheduling device, priority determination module 501 can specifically be used for, and determines to wait to dispatch the priority of UE, and generates priority query; Accordingly, resource distribution module 502 can specifically be used for, and selects limit priority UE from described priority query, for described UE distributes PUSCH resource and PHICH resource; Assigned PUSCH resource and PHICH resource for current UE after, current UE is deleted from described priority query; By that analogy, there have not been assignable PUSCH resource and PHICH resource, UE not dispatched in the perhaps described priority query up to current.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.

Claims (16)

1. the combined scheduling method of Physical Uplink Shared Channel PUSCH resource and hybrid automatic repeat request indication channel PHICH resource, be applied to PUSCH single antenna transmissions communication system, user equipment (UE) in the described communication system disposes identical user class demodulation reference mark DMRS cyclic shift, it is characterized in that, said method comprising the steps of:
Determine to wait to dispatch the priority of UE, according to priority order from high to low, for described UE distributes PUSCH resource and PHICH resource; Wherein, distributed the UE of PUSCH resource and PHICH resource for each, the PUSCH resource of described UE and the assigning process of PHICH resource comprise:
Can determine the initial Physical Resource Block PRB resource location that can not transmit with the user class DMRS cyclic shift of situation and current UE according to current PHICH resource as the PUSCH of current UE;
According to current PUSCH resource can be that current UE is distributed the PUSCH resource with situation and the initial PRB resource location that can not transmit as the PUSCH of current UE;
According to the PUSCH resource allocation result of current UE, and the user class DMRS cyclic shift of current UE, for current UE is distributed the PHICH resource.
2. the method for claim 1 is characterized in that, described can be with the user class DMRS cyclic shift of situation and current UE according to current PHICH resource, determine and can not comprise as the initial PRB resource location of the PUSCH transmission of current UE:
Determine PRB resource and PHICH resource mapping relation; Wherein, adjacent
Figure 2011100588984100001DEST_PATH_IMAGE002
Be mapped to adjacent PHICH group, be spaced apart
Figure 2011100588984100001DEST_PATH_IMAGE004
Figure 2011100588984100001DEST_PATH_IMAGE006
Be mapped to identical PHICH group; Wherein,
Figure 2011100588984100001DEST_PATH_IMAGE008
For PUSCH transmits the minimum PRB sequence number of first time slot allocation, Be PHICH group quantity;
According to described mapping relations,, be defined as the initial PRB resource location that can not transmit as the PUSCH of current UE with the pairing PRB sequence number of the PHICH resource of having distributed.
3. the method for claim 1 is characterized in that, the described initial PRB resource location that can use situation and can not transmit as the PUSCH of current UE according to current PUSCH resource is that current UE is distributed the PUSCH resource, comprising:
Can use situation according to current system PUSCH resource, determine available continuous P RB segmentation, and the required PRB quantity of definite current UE;
The PRB quantity required according to current UE is selected optimum PRB resource for current UE in each available continuous P RB segmentation, as the preassignment PRB resource in the corresponding available continuous P RB segmentation;
According to the Data-carrying ability and the efficiency of transmission of each preassignment PRB resource, determine the priority of each preassignment PRB resource, select the highest preassignment PRB resource of its medium priority, give current UE as the PUSCH resource allocation.
4. method as claimed in claim 3, it is characterized in that, the described PRB quantity required according to current UE, in each available continuous P RB segmentation, select optimum PRB resource for current UE, in the process as the preassignment PRB resource in the corresponding available continuous P RB segmentation, for each available continuous P RB segmentation, carry out following steps:
The window of sliding window that is identified for current available continuous P RB segmentation is long
Figure 2011100588984100001DEST_PATH_IMAGE012
,
Figure 2011100588984100001DEST_PATH_IMAGE014
, wherein,
Figure 2011100588984100001DEST_PATH_IMAGE016
Be the required PRB quantity of current UE,
Figure 2011100588984100001DEST_PATH_IMAGE018
The PRB quantity that is comprised for current available continuous P RB segmentation;
If
Figure DEST_PATH_IMAGE020
, and the initial PRB of current available continuous P RB segmentation can be used as the initial PRB resource location of the PUSCH transmission of current UE, then with all PRB in the current available continuous P RB segmentation as pre-allocation resource;
If
Figure DEST_PATH_IMAGE022
, and the initial PRB of current available continuous P RB segmentation can not be as the initial PRB resource location of the PUSCH of current UE transmission, then will remove in the current available continuous P RB segmentation residue continuous P RB behind the initial PRB as pre-allocation resource;
If
Figure DEST_PATH_IMAGE024
, then from current available continuous P RB segmentation, select optimum PRB as pre-allocation resource by carrying out the sliding window operation, the selected PRB quantity that goes out is grown consistent with window.
5. method as claimed in claim 4 is characterized in that, the PRB of described optimum is the highest PRB of average channel instruction indicator CQI.
6. method as claimed in claim 3 is characterized in that, if the PRB quantity that the quantity of preassignment PRB is comprised less than the available continuous P RB segmentation of correspondence, then described method also comprises:
CQI according to preassignment PRB determines corresponding Modulation and Coding Scheme MCS;
Can the data carried by data amount when determining on described preassignment PRB, to use described MCS to carry out transfer of data.
7. method as claimed in claim 3 is characterized in that, described Data-carrying ability and efficiency of transmission according to each preassignment PRB resource, determine the priority of each preassignment PRB resource, select the highest preassignment PRB resource of its medium priority, give current UE, be specially as the PUSCH resource allocation:
All preassignment PRB are divided into two set, wherein, preassignment PRB in first set can the data carried by data amount be not less than current UE data volume waiting for transmission, the preassignment PRB in second set can the data carried by data amount less than current UE data volume waiting for transmission; And the priority that first set is set is higher than the priority of second set;
For first set,, the priority of each preassignment PRB is set according to the MCS of each preassignment PRB correspondence wherein and the priority of first set; Wherein, high priority is high more more for MCS;
For second set, can the data carried by data amount and the priority of second set according to each preassignment PRB wherein, the priority of each preassignment PRB is set; Wherein, can the big more priority of data carried by data amount high more;
From first set and second set, select the highest preassignment PRB of priority, give current UE as the PUSCH resource allocation.
8. as each described method of claim 1 to 7, it is characterized in that described priority of determining to wait to dispatch UE according to priority order from high to low, for described UE distributes PUSCH resource and PHICH resource, is specially:
Steps A, the priority of determining to wait to dispatch UE, and generate priority query;
Step B, selecting limit priority UE from described priority query, is that described UE distributes PUSCH resource and PHICH resource;
Step C, assigned PUSCH resource and PHICH resource for current UE after, current UE is deleted from described priority query;
Step D, if currently can distribute PUSCH resource and PHICH resource in addition, and be still waiting to dispatch UE in the described priority query, then return step B; Otherwise process ends.
9. a resource scheduling device is applied to PUSCH single antenna transmissions communication system, and the UE in the described communication system disposes identical user class DMRS cyclic shift, it is characterized in that, comprising:
The priority determination module, the priority that is used to determine to wait to dispatch UE;
Resource distribution module is used for according to priority order from high to low, for described UE distributes PUSCH resource and PHICH resource; Wherein, distributed the UE of PUSCH resource and PHICH resource for each, in the PUSCH resource of described UE and the assigning process of PHICH resource, can determine the initial Physical Resource Block PRB resource location that can not transmit with the user class DMRS cyclic shift of situation and current UE according to current PHICH resource as the PUSCH of current UE; According to current PUSCH resource can be that current UE is distributed the PUSCH resource with situation and the initial PRB resource location that can not transmit as the PUSCH of current UE; According to the PUSCH resource allocation result of current UE, and the user class DMRS cyclic shift of current UE, for current UE is distributed the PHICH resource.
10. resource scheduling device as claimed in claim 9 is characterized in that described resource distribution module specifically is used for, and determines PRB resource and PHICH resource mapping relation, and is wherein, adjacent Be mapped to adjacent PHICH group, be spaced apart
Figure DEST_PATH_IMAGE028
Figure DEST_PATH_IMAGE030
Be mapped to identical PHICH group, wherein,
Figure DEST_PATH_IMAGE032
For PUSCH transmits the minimum PRB sequence number of first time slot allocation,
Figure DEST_PATH_IMAGE034
Be PHICH group quantity; And, according to described mapping relations,, be defined as the initial PRB resource location that can not transmit as the PUSCH of current UE with the pairing PRB sequence number of the PHICH resource of having distributed.
11. resource scheduling device as claimed in claim 9 is characterized in that, described resource distribution module specifically is used for, and can use situation according to current system PUSCH resource, determines available continuous P RB segmentation, and the required PRB quantity of definite current UE; The PRB quantity required according to current UE is selected optimum PRB resource for current UE in each available continuous P RB segmentation, as the preassignment PRB resource in the corresponding available continuous P RB segmentation; And, according to the Data-carrying ability and the efficiency of transmission of each preassignment PRB resource, determine the priority of each preassignment PRB resource, select the highest preassignment PRB resource of its medium priority, give current UE as the PUSCH resource allocation.
12. resource scheduling device as claimed in claim 11, it is characterized in that, described resource distribution module specifically is used for, in the PRB quantity required according to current UE, in each available continuous P RB segmentation, select optimum PRB resource for current UE, in the process as the preassignment PRB resource in the corresponding available continuous P RB segmentation,, carry out following operation for each available continuous P RB segmentation:
The window of sliding window that is identified for current available continuous P RB segmentation is long ,
Figure DEST_PATH_IMAGE038
, wherein,
Figure DEST_PATH_IMAGE040
Be the required PRB quantity of current UE,
Figure DEST_PATH_IMAGE042
The PRB quantity that is comprised for current available continuous P RB segmentation;
If
Figure DEST_PATH_IMAGE044
, and the initial PRB of current available continuous P RB segmentation can be used as the initial PRB resource location of the PUSCH transmission of current UE, then with all PRB in the current available continuous P RB segmentation as pre-allocation resource;
If
Figure DEST_PATH_IMAGE046
, and the initial PRB of current available continuous P RB segmentation can not be as the initial PRB resource location of the PUSCH of current UE transmission, then will remove in the current available continuous P RB segmentation residue continuous P RB behind the initial PRB as pre-allocation resource;
If , then from current available continuous P RB segmentation, select optimum PRB as pre-allocation resource by carrying out the sliding window operation, the selected PRB quantity that goes out is grown consistent with window.
13. resource scheduling device as claimed in claim 12 is characterized in that, the PRB of described optimum is the highest PRB of average channel instruction indicator CQI.
14. resource scheduling device as claimed in claim 11 is characterized in that, also comprises:
The transmitted data amount determination module, during the PRB quantity that is used for being comprised less than the available continuous P RB segmentation of correspondence in the quantity of preassignment PRB, CQI according to preassignment PRB determines corresponding Modulation and Coding Scheme MCS, can the data carried by data amount when determining to use on described preassignment PRB described MCS to carry out transfer of data.
15. resource scheduling device as claimed in claim 11, it is characterized in that, described resource distribution module specifically is used for, when distributing the PUSCH resource for current UE, all preassignment PRB are divided into two set, wherein, the preassignment PRB in first set can the data carried by data amount be not less than current UE data volume waiting for transmission, the preassignment PRB in second set can the data carried by data amount less than current UE data volume waiting for transmission; And the priority that first set is set is higher than the priority of second set; For first set,, the priority of each preassignment PRB is set according to the MCS of each preassignment PRB correspondence wherein and the priority of first set; Wherein, high priority is high more more for MCS; For second set, can the data carried by data amount and the priority of second set according to each preassignment PRB wherein, the priority of each preassignment PRB is set; Wherein, can the big more priority of data carried by data amount high more; From first set and second set, select the highest preassignment PRB of priority, give current UE as the PUSCH resource allocation.
16., it is characterized in that described priority determination module specifically is used for, and determines to wait to dispatch the priority of UE as each described resource scheduling device of claim 9 to 15, and generate priority query;
Described resource distribution module specifically is used for, and selects limit priority UE from described priority query, for described UE distributes PUSCH resource and PHICH resource; Assigned PUSCH resource and PHICH resource for current UE after, current UE is deleted from described priority query; By that analogy, there have not been assignable PUSCH resource and PHICH resource, UE not dispatched in the perhaps described priority query up to current.
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