CN102223722B - Downlink transmission method and equipment - Google Patents

Downlink transmission method and equipment Download PDF

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CN102223722B
CN102223722B CN2011101554491A CN201110155449A CN102223722B CN 102223722 B CN102223722 B CN 102223722B CN 2011101554491 A CN2011101554491 A CN 2011101554491A CN 201110155449 A CN201110155449 A CN 201110155449A CN 102223722 B CN102223722 B CN 102223722B
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phich
terminal
resource
phich resource
power
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CN102223722A (en
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朱志球
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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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Priority to PCT/CN2012/073338 priority patent/WO2012167652A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1692—Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a downlink transmission method and downlink transmission equipment, relating to the technical field of wireless communication, and aiming at solving the problem how to ensure the receiving performance of a physical HARQ (hybrid automatic repeat request) indicator channel (PHICH). In the invention, a base station determines transmission power needed by transmitting the PHICH to a terminal according to the downlink channel condition of the terminal after distributing transmission resource of a PUSCH (physical uplink shared channel) for the terminal; the base station determines whether the requirement of the transmission power can be met according to the current surplus power for transmitting the resources of the PHICH, if so, the PHICH transmission resource is distributed to the terminal, and after an uplink scheduling signaling transmitted by the PUSCH is transmitted to the terminal, the PHICH is transmitted to the terminal according to the PHICH transmission resource used and distributed by the transmission power, and if not, the scheduling to the current PUSCH transmission of the terminal is abandoned. By adopting the invention, the PHICH receiving performance can be ensured.

Description

Downlink transmission method and equipment
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of downlink transmission method and equipment.
Background technology
At Long Term Evolution (Long Term Evolution, LTE) in system, for Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH) transfer of data, base station need to send acknowledgement/non-acknowledgement (ACK/NACK) feedback information at corresponding descending sub frame, this feedback information is above to carry at physical mixed automatic repeat request indicating channel (Physical hybrid-ARQ indicator channel, PHICH).There are certain sequential relationship in descending ACK/NACK feedback and corresponding PUSCH transmission, and therefore for the transmission of the PUSCH on same subframe, its corresponding ACK/NACK feedback is also carried out at same descending sub frame.For the PUSCH transmission of subframe n, its corresponding PHICH is usually at subframe n+k PHICHTransmit: for Frequency Division Duplexing (FDD) (Frequency Division Duplex, FDD) system, k PHICHValue be 4; For time division duplex (Time Division Duplex, TDD) system, k PHICHThe concrete value of the configuration of concrete value and ascending-descending subframes, n relevant, as shown in table 1 below:
Figure BDA0000067471940000011
Table 1
In the LTE system, control area in descending sub frame (being descending control area) is be used to transmitting residential quarter dedicated reference symbols (CRS), Physical Control Format Indicator Channel (Physical Control Format Channel, PCFICH), PHICH, Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH), each channel/signal uses the resource of whole descending control area in the mode of sharing.Wherein, for PCFICH, PHICH and PDCCH, the minimum particle size that resource is distributed is resource unit group (Resource Element Group, REG), in each REG, comprise 4 Resource Units (RE), and these RE are the RE that is not used by the CRS of this residential quarter.
The PHICH resource mapping is to the control area of descending sub frame.According to system configuration, system PHICH resource is divided into to several PHICH groups (PHICH group), each PHICH group takies different running time-frequency resources, and each PHICH group need to take 3 REG of descending control area; Each PHICH group can carry a plurality of subscriber equipmenies (User ' s Equipment, UE) ACK/NACK information, in same PHICH group, the ACK/NACK of different UEs carries out code division multiplexing, 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
Figure BDA0000067471940000021
Sign, wherein
Figure BDA0000067471940000022
PHICH group sequence number,
Figure BDA0000067471940000023
The orthogonal sequence numbering in a group, as the code resource index of UE use in group.The specific formula for calculation of these two numberings is:
n PHICH group = ( I PRB _ RA lowest _ index + n DMRS ) mod N PHICH group + I PHICH N PHICH group
Figure BDA0000067471940000025
Wherein: n DMRSDMRS (DeModulation Reference Signal, the demodulated reference signal) cyclic shift value of indicating in the PDCCH corresponding with PUSCH transmission, if PUSCH corresponding to semi-continuous scheduling or the PUSCH of accidental access response scheduling transmit, n DMRSBe made as 0;
Figure BDA0000067471940000026
It is the spreading factor size of PHICH modulation; The minimum PRB sequence number of corresponding PUSCH transmission in first time slot allocation;
Figure BDA0000067471940000028
It is PHICH group number;
By above formula, can be seen, the PHICH resource location of UE is that in the resource that is taken by PUSCH transmission, minimum PRB sequence number and user class DMRS cyclic shift value determined jointly.These two information all provide in corresponding PUSCH dispatch.According to the regulation of LTE standard, for the dynamic dispatching of sub-frame of uplink n, its corresponding dispatch is at subframe n-K PUSCHPDCCH send.For FDD system, K PUSCHValue be 4; For TDD system, K PUSCHConcrete value is relevant, as shown in table 2 below with the concrete value of ascending-descending subframes configuration, subframe n equally:
Figure BDA0000067471940000031
Table 2
In existing PHICH Resource Allocation Formula, base station side is when carrying out uplink scheduling at present, and at first in default cell, all UE use identical n DMRS, after completing the distribution of PUSCH resource, according to PUSCH resource allocation result and n DMRSInitial value, calculate the PHICH resource location according to above-mentioned formula, if find the PHICH resource contention pass through to adjust n DMRSAttempt changing the PHICH resource location, if can be assigned to the PHICH resource, current UE is dispatched successfully; Otherwise this does not dispatch current UE.
Base station is at subframe n+k PHICHWhile sending PHICH, according to the UE channel condition, determine the transmitted power of corresponding PHICH, to guaranteeing the PHICH demodulation performance of UE side.
In realizing process of the present invention, the inventor finds in prior art to exist following technical problem:
In existing PHICH Resource Allocation Formula, only can guarantee that the PHICH resource of distributing for UE can not clash in each subframe, from the receptivity of PHICH, do not take in, and only at corresponding PHICH delivery time, determine the transmitting power of each UE, therefore easily cause the power difference of the inner different UEs of violent, the same PHICH group of PHICH transmitting power dynamic change very large, because rated power restriction in base station causes the situations such as the required PHICH transmitting power of UE can not be guaranteed.Specifically be described below:
The first, owing between LTE system small area, disturbing and accounting for leading role, the PHICH transmit power variation acutely must cause the fluctuation of presence of intercell interference violent, and this will make a very bad impression to the PHICH of adjacent cell, the receptivity of PDCCH;
The second, although that the mode that the inner different UEs of same PHICH group is divided by code is carried out is multiplexing, when the power difference of UE is very large, easily cause organizing the deterioration of PHICH receptivity between interior user, make it to meet the requirement of receiving terminal demodulation performance;
the 3rd. above-mentioned PHICH resource allocation process does not consider whether can distribute the required power of UE in corresponding PHICH emission subframe, and in real system, because the rated power of base station is limited, in order to guarantee the normal operation of radio-frequency devices, the transmitting power of each symbol of obvious descending control area can not surpass the rated power of base station, therefore in the time of may appearing at as certain user assignment PHICH transmitting power, due to descending OFDM (Orthogonal Frequency Division Multiplexing, OFDM) dump power of symbol can not meet the situation of the transmission power request of UE, this moment or no longer transmit this PHICH, reduce transmitting power and can not surpass base station rated power to guarantee symbol internal power summation, under both of these case, all can not guarantee the correct reception of PHICH.
Summary of the invention
The embodiment of the present invention provides a kind of downlink transmission method and equipment, for solving the problem that how to guarantee the PHICH receptivity.
A kind of downlink transmission method, the method comprises:
After base station is terminal distribution Physical Uplink Shared Channel PUSCH transfer resource, downlink transfer pattern according to terminal, spectrum efficiency to the Physical Downlink Shared Channel PDSCH of this terminal is revised, and obtains the equivalent spectrum efficiency of this terminal under physical mixed automatic repeat request indicating channel PHICH; According to signal to noise ratio curve corresponding to spectrum efficiency, determine that PHICH corresponding to the equivalent spectrum efficiency of terminal under PHICH measures signal to noise ratio; According to PHICH, measure signal to noise ratio and PHICH target signal to noise ratio, while obtaining sending PHICH to terminal on each Resource Unit RE needed transmitting power;
Base station is according to the current residual power on the resource for transmitting PHICH, determine whether to meet the demand of described transmitting power, if, it is terminal distribution PHICH transfer resource, and after to terminal, sending the uplink scheduling signaling of PUSCH transmission, according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, otherwise, the scheduling of the current transmission of PUSCH to terminal abandoned.
A kind of downlink transfer equipment, this equipment comprises:
Power determining unit, after being used to terminal distribution Physical Uplink Shared Channel PUSCH transfer resource, downlink transfer pattern according to terminal, spectrum efficiency to the Physical Downlink Shared Channel PDSCH of this terminal is revised, and obtains the equivalent spectrum efficiency of this terminal under physical mixed automatic repeat request indicating channel PHICH; According to signal to noise ratio curve corresponding to spectrum efficiency, determine that PHICH corresponding to the equivalent spectrum efficiency of terminal under PHICH measures signal to noise ratio; According to PHICH, measure signal to noise ratio and PHICH target signal to noise ratio, while obtaining sending PHICH to terminal on each Resource Unit RE needed transmitting power;
The Location of requirement unit, for the current residual power on the resource according to for transmitting PHICH, determine whether to meet the demand of described transmitting power;
The downlink transfer unit, while being used for being defined as being in described Location of requirement unit, for terminal distribution PHICH transfer resource, and after to terminal, sending the uplink scheduling signaling of PUSCH transmission, according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, in described Location of requirement unit, be defined as when no, abandon the scheduling of the current transmission of PUSCH to terminal.
in this programme, after base station is terminal distribution PUSCH transfer resource, according to the down channel situation of terminal, determine to send the needed transmitting power of PHICH to terminal, according to the current residual power on the resource be used to transmitting PHICH, determine whether to meet the demand of described transmitting power, if, it is terminal distribution PHICH transfer resource, and after to terminal, sending the uplink scheduling signaling of PUSCH transmission, according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, otherwise, abandon the scheduling of the PUSCH transmission of current 7 pairs of terminals, also just abandoned the PHICH transmission.Visible, in the present invention, current residual power due to base station on the resource be used to transmitting PHICH can meet while to terminal, sending the needed transmitting power of PHICH, just for terminal distribution PHICH transfer resource and according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, therefore, can effectively guarantee the receptivity of PHICH.
The accompanying drawing explanation
The method flow schematic diagram that Fig. 1 provides for the embodiment of the present invention;
The device structure schematic diagram that Fig. 2 provides for the embodiment of the present invention.
Embodiment
In order to guarantee the receptivity of PHICH, the embodiment of the present invention provides a kind of downlink transmission method, in this method, base station can meet while to terminal, sending the needed transmitting power of PHICH be used to the current residual power on the resource of transmitting PHICH current, just for terminal distribution PHICH transfer resource and after the uplink scheduling signaling that sends the PUSCH transmission to terminal, use the PHICH transfer resource that distributes to send PHICH to terminal, otherwise, abandon the scheduling of the current transmission of PUSCH to terminal.
Referring to Fig. 1, the downlink transmission method that the embodiment of the present invention provides comprises the following steps:
Step 10: after base station is terminal distribution Physical Uplink Shared Channel (PUSCH) transfer resource, determine to send the needed transmitting power of physical mixed automatic repeat request indicating channel (PHICH) to terminal according to the down channel situation of terminal;
Step 11: base station is according to the current residual power on the resource for transmitting PHICH, determine whether to meet the demand of described transmitting power, if, it is terminal distribution PHICH transfer resource, and after to terminal, sending the uplink scheduling signaling of PUSCH transmission, according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, otherwise, the scheduling of the current transmission of PUSCH to terminal abandoned.
In step 10, according to the down channel situation of terminal, determine to send the needed transmitting power of PHICH to terminal, its specific implementation can be as follows:
Base station is according to the downlink transfer pattern of terminal, and the spectrum efficiency of the Physical Downlink Shared Channel (PDSCH) of this terminal is revised, and obtains the equivalent spectrum efficiency of this terminal under PHICH; Here, can use with minor function and revise, obtain the equivalent spectrum efficiency eff of this terminal under PHICH PHICH: eff PHICH=f (eff PDSCH, TM (UE i)), wherein, eff PDSCHFor the spectrum efficiency of the PDSCH of this terminal, TM (UE i) be the downlink transfer pattern of this terminal.
Being exemplified below of f function: suppose current time UE iTransmission mode be transmission mode 1,2, eff is arranged PHICH=eff PDSCH.And for example, suppose current time UE jTransmission mode be transmission mode 3, and it uses a plurality of code words to transmit, and eff is arranged PHICH=eff PDSCH+ Δ 1* 0.2; Suppose current time UE kTransmission mode be transmission mode 3, and it uses single codeword to transmit, and eff is arranged PHICH=eff PDSCH.Wherein, Δ 1Compensating factor while being equivalent to the PHICH transmission for the spectrum efficiency of transmission mode word more than 3 code.
Base station, according to signal to noise ratio curve corresponding to spectrum efficiency, determines that PHICH corresponding to the equivalent spectrum efficiency of terminal under PHICH measures signal to noise ratio;
Signal to noise ratio and PHICH target signal to noise ratio are measured according to PHICH in base station, while obtaining sending PHICH to terminal, at each Resource Unit (RE), go up needed transmitting power P PHICH(UE), for example, PHICH target signal to noise ratio and PHICH are measured to signal to noise ratio and subtract each other, while obtaining sending PHICH to terminal on each RE needed transmitting power.Definite method of PHICH target signal to noise ratio is as follows: the transmission code rate of determining PHICH, information bit before this transmission code rate equals to encode and the ratio of the information bit after coding, then search the mapping table of code check and signal to noise ratio, obtain the signal to noise ratio that this transmission code rate is corresponding and be the PHICH target signal to noise ratio.
Accordingly, in step 11, base station, according to the current residual power on the resource for transmitting PHICH, determines whether to meet the demand of described transmitting power, and its specific implementation can be as follows:
Base station is for each OFDM (OFDM) symbol of descending control area in the subframe of PHICH transmission place, judge respectively whether the dump power on this OFDM symbol is not less than the expectation power on this OFDM symbol, the expectation power on this OFDM symbol be the RE number that takies on this OFDM symbol of the PHICH of described terminal and described while to terminal, sending PHICH on each RE the product of needed transmitting power; Here, the PHICH of terminal takies on the OFDM symbol RE number, common (normal) pattern that can be configured to according to the PHICH of current area is still expanded (extended) pattern and is directly obtained, specifically referring to agreement 3GPP TS36.211.Dump power on the OFDM symbol is the difference of the power that used on rated power on the OFDM symbol and this OFDM symbol.
If judgement is, be, the demand of described transmitting power is determined to meet in base station, otherwise, definite demand that can not meet described transmitting power.
In step 11, base station is terminal distribution PHICH transfer resource, and uses the PHICH transfer resource that distributes to send PHICH to terminal after the uplink scheduling signaling that sends the PUSCH transmission to terminal, and its specific implementation can be as follows:
Steps A: the operable PHICH resource of current terminal, according to the allocation result of current PUSCH transfer resource, is determined in base station; If there is the operable PHICH resource of current terminal, arrive step B, otherwise, to step D;
Step B: distribute to this terminal from choosing a PHICH resource the operable PHICH resource of current terminal; The DMRS cyclic shift value is determined according to the PHICH resource of distributing in base station, and to terminal, issues the uplink scheduling signaling of the PUSCH resource information of carrying this DMRS cyclic shift value and distribution;
Step C: base station, after the PUSCH that receives the terminal transmission, uses the PHICH resource of distributing to send PHICH to terminal according to described transmitting power, finishes;
Step D: the scheduling that the current transmission of PUSCH to terminal is abandoned in base station, finish; Or base station is terminal distribution PUSCH transfer resource again, and returns to steps A, and namely base station redefines the operable PHICH resource of current terminal according to the allocation result of new PUSCH transfer resource; From the PHICH resource that redefines, choosing a PHICH resource, redistribute to terminal, according to the PHICH resource of redistributing, redefine the DMRS cyclic shift value, and issue the uplink scheduling signaling of carrying the DMRS cyclic shift value that redefines and the PUSCH resource information of redistributing to terminal; After the PUSCH that receives the terminal transmission, use the PHICH resource of redistributing to send PHICH to terminal.
The operable PHICH resource of current terminal, according to the allocation result of PUSCH transfer resource, is determined in above-mentioned base station, and its specific implementation can be as follows:
Base station is for each DMRS cyclic shift value available in system, respectively according to the PUSCH transfer resource of this DMRS cyclic shift value and distribution minimum Physical Resource Block (PRB) sequence number at first Time Slot Occupancy, according to the formula of background technology part, be identified for identifying the PHICH group sequence number of a PHICH resource
Figure DEST_PATH_GDA00003372254200031
With orthogonal sequence number in group
Figure DEST_PATH_GDA00003372254200032
Form a PHICH resource index combination
Figure DEST_PATH_GDA00003372254200033
Base station is for each PHICH resource index combination that forms
Figure DEST_PATH_GDA00003372254200034
Whether the PHICH resource that judge respectively in the subframe of PHICH transmission place, this PHICH resource index combination identifies has distributed to other-end, and when being judged as NO, the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal.
Preferably, before after the PHICH resource that the combination of judgement PHICH resource index identifies is not yet assigned to other-end and by the PHICH resource that this PHICH resource index combination identifies, being defined as the operable PHICH resource of current terminal, base station can further judge in this PHICH resource index combination
Figure DEST_PATH_GDA00003372254200035
In corresponding PHICH group, the PHICH transmitting power of other-end of having distributed the PHICH resource with described to the needed transmitting power P of terminal transmission PHICH PHICH(UE) whether the absolute value of difference, less than difference power higher limit between predefined user; Between this user, the difference power higher limit is the numerical value greater than 0; If the base station judgement is less than difference power higher limit between described user, the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal, otherwise the PHICH resource that this PHICH resource index combination is not identified is defined as the operable PHICH resource of current terminal.
Terminal is distributed to from the operable PHICH resource of current terminal, choosing a PHICH resource in above-mentioned base station, and its specific implementation can be as follows:
Base station is for operable each PHICH resource of current terminal, determine respectively the total emission power on the RE in this PHICH resource when using this PHICH resource to send PHICH to described terminal, whether be no more than predefined RE transmitting power fiducial value, if, determine that this PHICH resource is the PHICH resource that does not need to carry out power back-off, otherwise, determine that this PHICH resource is the PHICH resource that need to carry out power back-off; Here, the total emission power on the RE in this PHICH resource is when using the PHICH resource to send PHICH to described terminal: described to the needed transmitting power P of terminal transmission PHICH PHICH(UE) with this RE, go up the transmitting power sum of other each terminals.
If there is the PHICH resource that does not need to carry out the excess power compensation, the PHICH resource that never needs to carry out to choose in the PHICH resource of excess power compensation a dump power minimum is distributed to terminal, otherwise, from the PHICH resource of choosing a power back-off amplitude minimum the operable PHICH resource of current terminal, distribute to terminal, the power back-off amplitude is the total emission power on the RE in this PHICH resource and the difference of described RE transmitting power fiducial value when using corresponding PHICH resource to send PHICH to described terminal.
In step 11, when base station sent PHICH to terminal on the PHICH resource of distributing, the transmitting power on the RE in this PHICH resource was the power back-off amplitude sum of described RE transmitting power fiducial value and this PHICH resource; Perhaps, the transmitting power on the RE in this PHICH resource is described to the needed transmitting power P of terminal transmission PHICH PHICH(UE) with this RE, go up the transmitting power sum of other-end.
Below the present invention is specifically described:
For existing PHICH resource distribution and PHICH power, control well cooperating, cause the problem that occurs that easily the presence of intercell interference fluctuation is violent or the PHICH receptivity is difficult to guarantee, the present invention proposes a kind of new PHICH dynamic resource allocation method.The particular content of the method is as follows:
In order to avoid that as far as possible the transmitting power of PHICH is adjusted, for the shared Resource Unit of PHICH (Resource Element, RE), consider to determine in advance an every Resource Unit energy of transmitting power (Energy per RE, EPRE) value P PHICHE_EPRE(n Group), this EPRE value can be the PHICH transmitting power according to static this residential quarter expectation set of the EPRE of this residential quarter CRS, can be also according to the semi-static definite PHICH expectation of actual transmissions situation transmitting power.
Before implementing this programme, consider the importance of CRS and PCFICH, at descending sub frame n-K PUSCHDuring dispatching uplink subframe n, at first needed descending sub frame n+k PHICHIn interior descending control area, the RE resource of CRS and PCFICH takies and power division in advance.For each OFDM symbol of descending control area, the power sum that all RE can distribute is the rated power of base station.In addition, also need to obtain the PHICH parameter configuration of this residential quarter, thereby determine the number of PHICH group
Figure BDA0000067471940000101
And the configuration of current PHICH is adopt conventional (normal) pattern or expand (extended) pattern.
For PHICH, the PHICH dynamic resource allocation scheme that the present invention proposes is as follows:
Step 1: suppose at descending sub frame n-K PUSCHThe uplink of scheduling subframe n, at subframe n-K PUSCHFor UEi carries out the PUSCH resource, divide timing, the PUSCH resource distribution module calls the PHICH resource distribution module and carries out the distribution of PHICH resource after distributing the PUSCH transfer resource, and the PHICH resource distribution module is determined need to be at descending sub frame n+k PHICHThe ACK/NACK feedback is carried out in PUSCH transmission to sub-frame of uplink n, carries out the distribution of PHICH transfer resource, and allocation result is fed back to the PUSCH resource distribution module; And then definite subframe n-K PUSCHThe parameter n of the DCI format 0 of middle transmission DMRS.Specifically comprise the steps 1.1-step 1.3:
Step 1.1: for UE i, while according to its down channel situation, determining to guarantee the PHICH receptivity, the needed transmitting power P of the PHICH of UE transmission PHICH(UE i), and consider this UE iThe magnitude relationship of PHICH transmission dump power (rated power of dump power=base station on the OFDM symbol-used power) on transmitting power required on each OFDM symbol of descending control area and each OFDM symbol:
If exist the dump power on any OFDM symbol can not meet current UE iPower demand on this OFDM symbol, this UE iThe PHICH resource distribute unsuccessfully, and inform the PUSCH resource distribution module;
If the dump power on all OFDM symbols all meets UE iPower demand, perform step 1.2.
Step 1.2: according to the PUSCH transfer resource of the subframe n minimum PRB sequence number at first Time Slot Occupancy
Figure BDA0000067471940000111
Determine current UE iThe PHICH group set that can select, determine all operable index combinations according to the set of available orthogonal sequence number in each PHICHgroup
Figure BDA0000067471940000112
Generate UE iThe PHICH resource distribute the addressing set
Figure BDA0000067471940000113
If S set is empty, this UE iThe PHICH resource distribute unsuccessfully, and the PHICH resource allocation result is returned to the PUSCH resource distribution module; If S is not empty, perform step 1.3.
Step 1.3: for the addressing set
Figure BDA0000067471940000114
Judging whether this addressing set exists does not need to carry out the excess power compensation (according to the dump power in current PHICH grouping and this UE iThe needed power of PHICH transmission between relation judge) the index combination
Figure BDA0000067471940000115
Form S set 1, S1 does not need to carry out for all the set that the index of excess power compensation constitutes;
If S1 is not empty, in S set 1, select ownership PHICH grouping dump power minimum
Figure BDA0000067471940000116
And definite available index combination
Figure BDA0000067471940000117
Otherwise, in the addressing S set, select the index combination of power back-off amplitude minimum
Figure BDA0000067471940000118
And this index-group of mark is combined into the resource that needs excess power compensation, determines simultaneously the power back-off amplitude.
Step 1.4: based on selected index combination
Figure BDA0000067471940000119
Determine parameter n DMRS, based on this n DMRSValue the corresponding flag bit of DCI format 0 is set, inform that PUSCH resource distribution module resource is allocated successfully.
Step 2:PUSCH resource distribution module is further processed according to the resource allocation result that the PHICH resource distribution module returns: if the PHICH resource is allocated successfully, think that this is for UE iThe PUSCH resource be allocated successfully; If the PHICH resource is distributed unsuccessfully, can be at subframe n-K PUSCHNo longer dispatch UE iIn the PUSCH of subframe n transmission; Also can change to UE iThe PUSCH resource of distributing, i.e. undated parameter
Figure BDA0000067471940000121
After perform step again 1, again attempt the PHICH resource and distribute.
Step 3: base station need to be at descending sub frame n+k PHICHCarry out UE iPHICH when transmission, according to the PHICH resource index combination that distributes
Figure BDA0000067471940000122
Search corresponding power compensation information, determine the transmitting power on corresponding PHICH resource.
For step 1.1, determine UE iThe needed transmitting power of PHICH transmission the time, its concrete grammar is as follows:
At first: according to UE iDownlink transfer pattern TM (UE i), to this UE iThe spectrum efficiency eff of Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) PDSCHRevise, obtain UE iEquivalent spectrum efficiency eff under PHICH PHICH:
eff PHICH＝f(eff PDSCH，TM(UE i))
The equivalent spectrum efficiency of f () expression PHICH and PDSCH channel spectrum efficiency, UE iThe downlink transfer pattern between functional relation.
Then: according to UE iEquivalent spectrum efficiency eff under PHICH PHICH, search the corresponding curve of signal to noise ratio-spectrum efficiency, obtain corresponding PHICH and measure signal to noise ratio, be designated as SINR Measure(UE i).
Finally: according to UE iPHICH measure signal to noise ratio SINR Measure(UE i), rated output dB value P PHICH(UE i), P wherein PHICH(UE i) can measure signal to noise ratio SINR according to PHICH target signal to noise ratio and PHICH Measure(UE i) difference obtain.
For step 1.1, judging whether each OFDM symbol of descending control area can meet current UE iPower demand the time, concrete grammar is as follows:
At first: UE is determined in configuration according to current area PHICH iThe RE number that takies of the PHICH transmission needs on each OFDM symbol of descending control area, this RE number can be configured to the normal pattern or the extended pattern directly obtains according to current area PHICH.
Then: according to the dump power of each OFDM symbol of current descending control area (power that the Resources allocation of base station rated power-consumes), UE iOn each OFDM symbol, need the needed power magnitude P of the RE that takies number and single RE PHICH(UE i) judge: if the power magnitude P of the OFDM symbol dump power<UE on this OFDM symbol takies on this OFDM symbol the single RE of RE number * PHICH(UE i), think that the gross power on this OFDM symbol can not meet the power demand of current UE; Otherwise think the power demand that can meet current UE.
For step 1.2, generate UE iThe PHICH available resource set
Figure BDA0000067471940000131
Concrete grammar as follows:
At first: according to the PRB resource that the PUSCH resource distribution module is selected, determine minimum PRB sequence number With this
Figure BDA0000067471940000133
For benchmark Ergodic Theory n DMRSEach n in set DMRS, the formula that then provides according to background technology calculates the PHICH packet numbering
Figure BDA0000067471940000134
With orthogonal sequence number in group
Figure BDA0000067471940000135
Form addressable PHICH resource index combination
Figure BDA0000067471940000136
Then: for the PHICH resource index, make up
Figure BDA0000067471940000137
According to following factor, judge whether it is available: if this index-group is combined in subframe n+k PHICHBe not yet assigned to other users and affiliated PHICH grouping
Figure BDA0000067471940000138
In, the PHICH transmitting power of having distributed the UE of PHICH resource
Figure BDA0000067471940000139
All meet:
| P PHICH ( CE j , n PHICH group ) - P PHICH ( UE i ) | < TH PHICHgroup _ diff
Think that current PHICH resource index makes up
Figure BDA00000674719400001311
Available, otherwise unavailable.Wherein, TH PHICHgroup_diffThe upper limit for power difference between the interior user of same PHICH grouping.
For step 1.3, suppose to determine in advance that the transmitting power on each RE of PHICH is P PHICH_EPRE (ngroup)If, UE iSelect can guarantee that on the corresponding RE resource of this PHICH grouping, total transmitting power is no more than this value after this PHICH grouping, think that it belongs to S set 1.When S set 1 is not empty, select power back-off amplitude minimum and can guarantee the PHICH allocation result of the PHICH grouping of PHICH receptivity as current UE, to guarantee more easily successful distribution PHICH resource of follow-up UE.If S1 is empty, in all available resource set, select the PHICH grouping of dump power minimum, difference with the assurance final transmitting power of PHICH and predefined transmission power level is as much as possible little, thereby has reduced the big ups and downs of transmitting power on the PHICH resource as far as possible.
For step 2, if the PHICH resource is allocated successfully, according to selected resource index combination
Figure BDA0000067471940000141
And the PRB resource that the PUSCH resource distribution module is selected is determined minimum PRB sequence number
Figure BDA0000067471940000142
Calculate UE iParameter n DMRSValue, and according to its value, the corresponding flag bit in uplink scheduling authorization DCI format 0 is set, the result of distributing according to the PUSCH resource simultaneously (as the PRB set that distributes, the MCS that selects etc.) is filled in the corresponding information of DCI format 0, and by this uplink scheduling authorization information at subframe n-K PUSCHThe PDCCH channel send, to inform UE iThe scheduling result of its subframe n.
For step 3, can also be: at subframe n+k PHICHFor UE iDuring emission PHICH, according to obtaining UE iThe required transmitting power P of PHICH PHICH(UE i), using this power as UE iAt selected PHICH, (with resource index, make up
Figure BDA0000067471940000143
Expression) the final transmitting power on.
Referring to Fig. 2, the embodiment of the present invention also provides a kind of downlink transfer equipment, and this equipment comprises:
Power determining unit 20, after being used to terminal distribution Physical Uplink Shared Channel PUSCH transfer resource, determine to send the needed transmitting power of physical mixed automatic repeat request indicating channel PHICH to terminal according to the down channel situation of terminal;
Location of requirement unit 21, for the current residual power on the resource according to for transmitting PHICH, determine whether to meet the demand of described transmitting power;
Downlink transfer unit 22, while being used for being defined as being in described Location of requirement unit, for terminal distribution PHICH transfer resource, and after to terminal, sending the uplink scheduling signaling of PUSCH transmission, according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, in described Location of requirement unit, be defined as when no, abandon the scheduling of the current transmission of PUSCH to terminal.
Described power determining unit 20 for:
According to the downlink transfer pattern of terminal, the spectrum efficiency of the Physical Downlink Shared Channel PDSCH of this terminal is revised, obtain the equivalent spectrum efficiency of this terminal under PHICH:
According to signal to noise ratio curve corresponding to spectrum efficiency, determine that PHICH corresponding to the equivalent spectrum efficiency of terminal under PHICH measures signal to noise ratio;
According to PHICH, measure signal to noise ratio and PHICH target signal to noise ratio, while obtaining sending PHICH to terminal on each Resource Unit RE needed transmitting power.
Described Location of requirement unit 21 for:
Each orthogonal frequency division multiplex OFDM symbol for descending control area in the subframe of PHICH transmission place, judge respectively whether the dump power on this OFDM symbol is not less than the expectation power on this OFDM symbol, the expectation power on this OFDM symbol be the RE number that takies on this OFDM symbol of the PHICH of described terminal and described while to terminal, sending PHICH on each RE the product of needed transmitting power;
If judgement is, be, determine to meet the demand of described transmitting power, otherwise, definite demand that can not meet described transmitting power.
Described downlink transfer unit 22 for:
When described Location of requirement unit is defined as being, according to the allocation result of PUSCH transfer resource, determine the operable PHICH resource of current terminal; From the operable PHICH resource of current terminal, choosing a PHICH resource, distribute to this terminal;
According to the PHICH resource of distributing, determine the DMRS cyclic shift value, and to terminal, issue the uplink scheduling signaling of the PUSCH resource information of carrying this DMRS cyclic shift value and distribution;
After the PUSCH that receives the terminal transmission, according to described transmitting power, use the PHICH resource of distributing to send PHICH to terminal.
Described downlink transfer unit 22 also for:
Current, while not having the operable PHICH resource of terminal, abandon the scheduling of the current transmission of PUSCH to terminal; Or,
Again be terminal distribution PUSCH transfer resource, and redefine the operable PHICH resource of current terminal according to the allocation result of new PUSCH transfer resource; From the PHICH resource that redefines, choosing a PHICH resource, redistribute to terminal, according to the PHICH resource of redistributing, redefine the DMRS cyclic shift value, and issue the uplink scheduling signaling of carrying the DMRS cyclic shift value that redefines and the PUSCH resource information of redistributing to terminal; After the PUSCH that receives the terminal transmission, use the PHICH resource of redistributing to send PHICH to terminal.
Described downlink transfer unit 22 for:
For each DMRS cyclic shift value available in system, respectively according to the PUSCH transfer resource of this DMRS cyclic shift value and the distribution minimum Physical Resource Block PRB sequence number at first Time Slot Occupancy, be identified for identifying the PHICH group sequence number of a PHICH resource
Figure DEST_PATH_GDA00003372254200051
With orthogonal sequence number in group
Figure DEST_PATH_GDA00003372254200052
Form a PHICH resource index combination
Figure DEST_PATH_GDA00003372254200053
For each PHICH resource index combination that forms Whether the PHICH resource that judge respectively in the subframe of PHICH transmission place, this PHICH resource index combination identifies has distributed to other-end, and when being judged as NO, the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal.
Described downlink transfer unit 22 also for:
Before after being judged as NO and by the PHICH resource that this PHICH resource index combination identifies, being defined as the operable PHICH resource of current terminal, judge in this PHICH resource index combination
Figure DEST_PATH_GDA00003372254200055
In corresponding PHICH group, distributed PHICH transmitting power and the described absolute value that sends the difference of the needed transmitting power of PHICH to terminal of the terminal of PHICH resource, whether less than difference power higher limit between predefined user; During the difference power higher limit, the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal between judgement is less than described user.
Described downlink transfer unit 22 for:
For operable each PHICH resource of current terminal, determine respectively the total emission power on the RE in this PHICH resource when using this PHICH resource to send PHICH to described terminal, whether be no more than predefined RE transmitting power fiducial value, if, determine that this PHICH resource is the PHICH resource that does not need to carry out power back-off, otherwise, determine that this PHICH resource is the PHICH resource that need to carry out power back-off;
If there is the PHICH resource that does not need to carry out the excess power compensation, the PHICH resource that never needs to carry out to choose in the PHICH resource of excess power compensation a dump power minimum is distributed to terminal, otherwise, from the PHICH resource of choosing a power back-off amplitude minimum the operable PHICH resource of current terminal, distribute to terminal, the power back-off amplitude is the total emission power on the RE in this PHICH resource and the difference of described RE transmitting power fiducial value when using corresponding PHICH resource to send PHICH to described terminal.
Described downlink transfer unit 22 for:
On the PHICH resource of distributing, to terminal, send PHICH, the transmitting power on the RE in this PHICH resource is the power back-off amplitude sum of described RE transmitting power fiducial value and this PHICH resource.
Described downlink transfer unit 22 for:
On the PHICH resource of distributing, to terminal, send PHICH, the transmitting power on the RE in this PHICH resource is the described transmitting power sum that sends the needed transmitting power of PHICH and the upper other-end of this RE to terminal.
To sum up, beneficial effect of the present invention comprises:
in the scheme that the embodiment of the present invention provides, after base station is terminal distribution PUSCH transfer resource, according to the down channel situation of terminal, determine to send the needed transmitting power of PHICH to terminal, according to the current residual power on the resource be used to transmitting PHICH, determine whether to meet the demand of described transmitting power, if, it is terminal distribution PHICH transfer resource, and after to terminal, sending the uplink scheduling signaling of PUSCH transmission, according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, otherwise, abandon the scheduling of the current transmission of PUSCH to terminal, also just abandoned the PHICH transmission.Visible, in the present invention, current residual power due to base station on the resource be used to transmitting PHICH can meet while to terminal, sending the needed transmitting power of PHICH, just for terminal distribution PHICH transfer resource and according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, therefore, can effectively guarantee the receptivity of PHICH.
The present invention describes with reference to flow chart and/or the block diagram of method, equipment (system) and computer program according to the embodiment of the present invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step to produce computer implemented processing, thereby in the instruction of carrying out on computer or other programmable devices, be provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.

Claims (18)

1. a downlink transmission method, is characterized in that, the method comprises:
After base station is terminal distribution Physical Uplink Shared Channel PUSCH transfer resource, downlink transfer pattern according to terminal, spectrum efficiency to the Physical Downlink Shared Channel PDSCH of this terminal is revised, and obtains the equivalent spectrum efficiency of this terminal under physical mixed automatic repeat request indicating channel PHICH; According to signal to noise ratio curve corresponding to spectrum efficiency, determine that PHICH corresponding to the equivalent spectrum efficiency of terminal under PHICH measures signal to noise ratio; According to PHICH, measure signal to noise ratio and PHICH target signal to noise ratio, while obtaining sending PHICH to terminal on each Resource Unit RE needed transmitting power;
Base station is according to the current residual power on the resource for transmitting PHICH, determine whether to meet the demand of described transmitting power, if, it is terminal distribution PHICH transfer resource, and after to terminal, sending the uplink scheduling signaling of PUSCH transmission, according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, otherwise, the scheduling of the current transmission of PUSCH to terminal abandoned.
2. the method for claim 1, is characterized in that, described base station, according to the current residual power on the resource for transmitting PHICH, determines whether that the demand that can meet described transmitting power comprises:
Base station is for each orthogonal frequency division multiplex OFDM symbol of descending control area in the subframe of PHICH transmission place, judge respectively whether the dump power on this OFDM symbol is not less than the expectation power on this OFDM symbol, the expectation power on this OFDM symbol be the RE number that takies on this OFDM symbol of the PHICH of described terminal and described while to terminal, sending PHICH on each RE the product of needed transmitting power;
If judgement is, be, the demand of described transmitting power is determined to meet in base station, otherwise, definite demand that can not meet described transmitting power.
3. the method for claim 1, it is characterized in that, described is terminal distribution PHICH transfer resource, and, after to terminal, sending the uplink scheduling signaling of PUSCH transmission, according to described transmitting power, uses the PHICH transfer resource that distributes to send PHICH to terminal and comprise:
The operable PHICH resource of current terminal, according to the allocation result of PUSCH transfer resource, is determined in base station; From the operable PHICH resource of current terminal, choosing a PHICH resource, distribute to this terminal;
The DMRS cyclic shift value is determined according to the PHICH resource of distributing in base station, and to terminal, issues the uplink scheduling signaling of the PUSCH resource information of carrying this DMRS cyclic shift value and distribution;
Base station, after the PUSCH that receives the terminal transmission, uses the PHICH resource of distributing to send PHICH to terminal according to described transmitting power.
4. method as claimed in claim 3, is characterized in that, while not having the operable PHICH resource of terminal, the method further comprises current:
The scheduling of the current transmission of PUSCH to terminal is abandoned in base station; Or,
Base station is terminal distribution PUSCH transfer resource again, and redefines the operable PHICH resource of current terminal according to the allocation result of new PUSCH transfer resource; From the PHICH resource that redefines, choosing a PHICH resource, redistribute to terminal, according to the PHICH resource of redistributing, redefine the DMRS cyclic shift value, and issue the uplink scheduling signaling of carrying the DMRS cyclic shift value that redefines and the PUSCH resource information of redistributing to terminal; After the PUSCH that receives the terminal transmission, use the PHICH resource of redistributing to send PHICH to terminal.
5. method as claimed in claim 3, is characterized in that, described base station, according to the allocation result of PUSCH transfer resource, determines that the operable PHICH resource of current terminal comprises:
Base station is for each DMRS cyclic shift value available in system, according to the PUSCH transfer resource of this DMRS cyclic shift value and the distribution minimum Physical Resource Block PRB sequence number at first Time Slot Occupancy, be identified for identifying the PHICH group sequence number of a PHICH resource respectively
Figure FDA00003372254100021
With orthogonal sequence number in group
Figure FDA00003372254100022
Form a PHICH resource index combination
Figure FDA00003372254100023
Base station is for each PHICH resource index combination that forms
Figure FDA00003372254100024
Whether the PHICH resource that judge respectively in the subframe of PHICH transmission place, this PHICH resource index combination identifies has distributed to other-end, and when being judged as NO, the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal.
6. method as claimed in claim 5, is characterized in that, before after being judged as NO and by the PHICH resource that this PHICH resource index combination identifies, being defined as the operable PHICH resource of current terminal, the method further comprises:
Base station judges in this PHICH resource index combination In corresponding PHICH group, distributed PHICH transmitting power and the described absolute value that sends the difference of the needed transmitting power of PHICH to terminal of the terminal of PHICH resource, whether less than difference power higher limit between predefined user;
The described PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal and comprises:
Base station is between judgement is less than described user during the difference power higher limit, and the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal.
7. method as claimed in claim 5, is characterized in that, described base station is distributed to terminal and comprised from the operable PHICH resource of current terminal, choosing a PHICH resource:
Base station is for operable each PHICH resource of current terminal, determine respectively the total emission power on the RE in this PHICH resource when using this PHICH resource to send PHICH to described terminal, whether be no more than predefined RE transmitting power fiducial value, if, determine that this PHICH resource is the PHICH resource that does not need to carry out power back-off, otherwise, determine that this PHICH resource is the PHICH resource that need to carry out power back-off;
If there is the PHICH resource that does not need to carry out the excess power compensation, the PHICH resource that never needs to carry out to choose in the PHICH resource of excess power compensation a dump power minimum is distributed to terminal, otherwise, from the PHICH resource of choosing a power back-off amplitude minimum the operable PHICH resource of current terminal, distribute to terminal, the power back-off amplitude is the total emission power on the RE in this PHICH resource and the difference of described RE transmitting power fiducial value when using corresponding PHICH resource to send PHICH to described terminal.
8. method as claimed in claim 7, is characterized in that, the described PHICH resource of distributing of using according to described transmitting power comprises to terminal transmission PHICH:
Base station sends PHICH to terminal on the PHICH resource of distributing, the transmitting power on the RE in this PHICH resource is the power back-off amplitude sum of described RE transmitting power fiducial value and this PHICH resource.
9. as arbitrary described method in claim 1-7, it is characterized in that, the described PHICH resource of distributing of using according to described transmitting power comprises to terminal transmission PHICH:
Base station sends PHICH to terminal on the PHICH resource of distributing, the transmitting power on the RE in this PHICH resource is the described transmitting power sum that sends the needed transmitting power of PHICH and the upper other-end of this RE to terminal.
10. a downlink transfer equipment, is characterized in that, this equipment comprises:
Power determining unit, after being used to terminal distribution Physical Uplink Shared Channel PUSCH transfer resource, downlink transfer pattern according to terminal, spectrum efficiency to the Physical Downlink Shared Channel PDSCH of this terminal is revised, and obtains the equivalent spectrum efficiency of this terminal under physical mixed automatic repeat request indicating channel PHICH; According to signal to noise ratio curve corresponding to spectrum efficiency, determine that PHICH corresponding to the equivalent spectrum efficiency of terminal under PHICH measures signal to noise ratio; According to PHICH, measure signal to noise ratio and PHICH target signal to noise ratio, while obtaining sending PHICH to terminal on each Resource Unit RE needed transmitting power;
The Location of requirement unit, for the current residual power on the resource according to for transmitting PHICH, determine whether to meet the demand of described transmitting power;
The downlink transfer unit, while being used for being defined as being in described Location of requirement unit, for terminal distribution PHICH transfer resource, and after to terminal, sending the uplink scheduling signaling of PUSCH transmission, according to described transmitting power, use the PHICH transfer resource that distributes to send PHICH to terminal, in described Location of requirement unit, be defined as when no, abandon the scheduling of the current transmission of PUSCH to terminal.
11. equipment as claimed in claim 10, is characterized in that, described Location of requirement unit is used for:
Each orthogonal frequency division multiplex OFDM symbol for descending control area in the subframe of PHICH transmission place, judge respectively whether the dump power on this OFDM symbol is not less than the expectation power on this OFDM symbol, the expectation power on this OFDM symbol be the RE number that takies on this OFDM symbol of the PHICH of described terminal and described while to terminal, sending PHICH on each RE the product of needed transmitting power;
If judgement is, be, determine to meet the demand of described transmitting power, otherwise, definite demand that can not meet described transmitting power.
12. equipment as claimed in claim 10, is characterized in that, described downlink transfer unit is used for:
When described Location of requirement unit is defined as being, according to the allocation result of PUSCH transfer resource, determine the operable PHICH resource of current terminal; From the operable PHICH resource of current terminal, choosing a PHICH resource, distribute to this terminal;
According to the PHICH resource of distributing, determine the DMRS cyclic shift value, and to terminal, issue the uplink scheduling signaling of the PUSCH resource information of carrying this DMRS cyclic shift value and distribution;
After the PUSCH that receives the terminal transmission, according to described transmitting power, use the PHICH resource of distributing to send PHICH to terminal.
13. equipment as claimed in claim 12, is characterized in that, described downlink transfer unit also for:
Current, while not having the operable PHICH resource of terminal, abandon the scheduling of the current transmission of PUSCH to terminal; Or,
Again be terminal distribution PUSCH transfer resource, and redefine the operable PHICH resource of current terminal according to the allocation result of new PUSCH transfer resource; From the PHICH resource that redefines, choosing a PHICH resource, redistribute to terminal, according to the PHICH resource of redistributing, redefine the DMRS cyclic shift value, and issue the uplink scheduling signaling of carrying the DMRS cyclic shift value that redefines and the PUSCH resource information of redistributing to terminal; After the PUSCH that receives the terminal transmission, use the PHICH resource of redistributing to send PHICH to terminal.
14. equipment as claimed in claim 12, is characterized in that, described downlink transfer unit is used for:
For each DMRS cyclic shift value available in system, respectively according to the PUSCH transfer resource of this DMRS cyclic shift value and the distribution minimum Physical Resource Block PRB sequence number at first Time Slot Occupancy, be identified for identifying the PHICH group sequence number of a PHICH resource
Figure FDA00003372254100051
With orthogonal sequence number in group
Figure FDA00003372254100052
Form a PHICH resource index combination
For each PHICH resource index combination that forms
Figure FDA00003372254100054
Whether the PHICH resource that judge respectively in the subframe of PHICH transmission place, this PHICH resource index combination identifies has distributed to other-end, and when being judged as NO, the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal.
15. equipment as claimed in claim 14, is characterized in that, described downlink transfer unit also for:
Before after being judged as NO and by the PHICH resource that this PHICH resource index combination identifies, being defined as the operable PHICH resource of current terminal, judge in this PHICH resource index combination
Figure FDA00003372254100061
In corresponding PHICH group, distributed PHICH transmitting power and the described absolute value that sends the difference of the needed transmitting power of PHICH to terminal of the terminal of PHICH resource, whether less than difference power higher limit between predefined user; During the difference power higher limit, the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal between judgement is less than described user.
16. equipment as claimed in claim 14, is characterized in that, described downlink transfer unit is used for:
For operable each PHICH resource of current terminal, determine respectively the total emission power on the RE in this PHICH resource when using this PHICH resource to send PHICH to described terminal, whether be no more than predefined RE transmitting power fiducial value, if, determine that this PHICH resource is the PHICH resource that does not need to carry out power back-off, otherwise, determine that this PHICH resource is the PHICH resource that need to carry out power back-off;
If there is the PHICH resource that does not need to carry out the excess power compensation, the PHICH resource that never needs to carry out to choose in the PHICH resource of excess power compensation a dump power minimum is distributed to terminal, otherwise, from the PHICH resource of choosing a power back-off amplitude minimum the operable PHICH resource of current terminal, distribute to terminal, the power back-off amplitude is the total emission power on the RE in this PHICH resource and the difference of described RE transmitting power fiducial value when using corresponding PHICH resource to send PHICH to described terminal.
17. equipment as claimed in claim 16, is characterized in that, described downlink transfer unit is used for:
On the PHICH resource of distributing, to terminal, send PHICH, the transmitting power on the RE in this PHICH resource is the power back-off amplitude sum of described RE transmitting power fiducial value and this PHICH resource.
18. as arbitrary described equipment in claim 10-16, it is characterized in that, described downlink transfer unit is used for:
On the PHICH resource of distributing, to terminal, send PHICH, the transmitting power on the RE in this PHICH resource is the described transmitting power sum that sends the needed transmitting power of PHICH and the upper other-end of this RE to terminal.
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CN102223722B (en) * 2011-06-10 2013-11-20 电信科学技术研究院 Downlink transmission method and equipment
CN103167595B (en) * 2011-12-13 2018-01-19 中兴通讯股份有限公司 A kind of resource of physical mixing retransmission indicating chanel and power distribution method and device
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