CN102223722A - Downlink transmission method and equipment - Google Patents

Downlink transmission method and equipment Download PDF

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CN102223722A
CN102223722A CN2011101554491A CN201110155449A CN102223722A CN 102223722 A CN102223722 A CN 102223722A CN 2011101554491 A CN2011101554491 A CN 2011101554491A CN 201110155449 A CN201110155449 A CN 201110155449A CN 102223722 A CN102223722 A CN 102223722A
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phich
terminal
resource
phich resource
power
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CN102223722B (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

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 the system, for Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH) transfer of data, the base station need send acknowledgement/non-acknowledgement (ACK/NACK) feedback information in the corresponding downstream subframe, this feedback information is that (Physical hybrid-ARQ indicator channel PHICH) upward carries at the automatic request retransmission indicating channel of physical mixed.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.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 the descending sub frame (being descending control area) is used to transmit sub-district 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 of resource allocation is that (Resource Element Group REG), comprises 4 Resource Units (RE) to resource unit group among each REG, and these RE are the RE that is not used by the CRS of this sub-district.
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 (PHICH group), each PHICH group takies different running time-frequency resources, and each PHICH group need take 3 REG of descending control area; Each PHICH group can carry a plurality of subscriber equipmenies (User ' s Equipment, UE) ACK/NACK information, 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
Figure BDA0000067471940000021
Sign, wherein
Figure BDA0000067471940000022
Be PHICH group sequence number, Be the orthogonal sequence numbering in a group, as the sign indicating number resource index of UE use in group.The concrete computing formula 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 DMRSBe to transmit DMRS (DeModulation Reference Signal, the demodulated reference signal) cyclic shift value of indicating among the corresponding PDCCH with PUSCH, if the PUSCH transmission of the PUSCH of semi-continuous scheduling correspondence or accidental access response scheduling, n DMRSBe made as 0;
Figure BDA0000067471940000026
It is the spreading factor size of PHICH modulation;
Figure BDA0000067471940000027
It is the minimum PRB sequence number that corresponding PUSCH is transmitted in first time slot allocation;
Figure BDA0000067471940000028
It is PHICH group number;
Can see that by above formula the PHICH resource location of UE is that minimum PRB sequence number and user class DMRS cyclic shift value determined jointly in the resource that is taken by PUSCH transmission.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 P HICH Resource Allocation Formula, base station side is when carrying out uplink scheduling at present, and at first all UE use identical n in the default cell DMRS, after finishing the PUSCH resource allocation, according to PUSCH resource allocation result and n DMRSInitial value calculates the PHICH resource location according to above-mentioned formula, if find the PHICH resource contention then by adjusting n DMRSAttempt 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 base station is at subframe n+k PHICHWhen sending PHICH, determine the transmitted power of corresponding PHICH according to the UE channel condition, in the hope of guaranteeing the PHICH demodulation performance of UE side.
In realizing process of the present invention, the inventor finds to exist in the prior art following technical problem:
In the existing P HICH Resource Allocation Formula, only can guarantee that the PHICH resource of distributing for UE can not clash in each subframe, the receptivity from PHICH does not take in, and only determine the transmitting power of each UE at corresponding PHICH delivery time, therefore cause easily violent, the same PHICH of PHICH transmitting power dynamic change organize the power difference of inner different UEs very big, because rated power restriction in base station causes the required PHICH transmitting power of UE to can not get situations such as assurance.Specifically be described below:
The first, because presence of intercell interference accounts for leading role in the LTE system, 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 sub-district, the receptivity of PDCCH;
The second, carry out multiplexingly though same PHICH organizes mode that inner different UEs divides by sign indicating number, the deterioration of PHICH receptivity between the user makes it to satisfy the requirement of receiving terminal demodulation performance in causing easily when the power difference of UE is very big organizing;
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 operate as normal 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 may appear at when distributing the PHICH transmitting power for certain user, because descending OFDM (Orthogonal Frequency Division Multiplexing, OFDM) dump power of symbol can not satisfy 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, all can not guarantee the correct reception of PHICH under the both of these case to guarantee symbol internal power summation.
Summary of the invention
The embodiment of the invention provides a kind of downlink transmission method and equipment, is used to solve the problem that how to guarantee the PHICH receptivity.
A kind of downlink transmission method, this method comprises:
After the base station is terminal distribution Physical Uplink Shared Channel PUSCH transfer resource, determine to send the needed transmitting power of physical mixed automatic request retransmission indicating channel PHICH to terminal according to the down channel situation of terminal;
The base station is according to the current residual power on the resource that is used to transmit PHICH, determine whether to satisfy the demand of described transmitting power, if, it then is terminal distribution PHICH transfer resource, and after sending the uplink scheduling signaling of PUSCH transmission to terminal, use the PHICH transfer resource that distributes to send PHICH according to described transmitting power to terminal, otherwise, the current scheduling that the PUSCH of terminal is transmitted abandoned.
A kind of downlink transfer equipment, this equipment comprises:
Power determining unit, be used to terminal distribution Physical Uplink Shared Channel PUSCH transfer resource after, determine to send the needed transmitting power of physical mixed automatic request retransmission indicating channel PHICH according to the down channel situation of terminal to terminal;
The demand determining unit is used for determining whether to satisfy the demand of described transmitting power according to the current residual power on the resource that is used to transmit PHICH;
The downlink transfer unit, be used for when described demand determining unit is defined as being, be terminal distribution PHICH transfer resource, and after sending the uplink scheduling signaling of PUSCH transmission to terminal, use the PHICH transfer resource that distributes to send PHICH according to described transmitting power to terminal, when described demand determining unit is defined as not, abandon the current scheduling that the PUSCH of terminal is transmitted.
In this programme, after the base station is terminal distribution PUSCH transfer resource, determine to send the needed transmitting power of PHICH according to the down channel situation of terminal to terminal, according to the current residual power on the resource that is used to transmit PHICH, determine whether to satisfy the demand of described transmitting power, if, it then is terminal distribution PHICH transfer resource, and after sending the uplink scheduling signaling of PUSCH transmission to terminal, use the PHICH transfer resource that distributes to send PHICH according to described transmitting power to terminal, otherwise, abandon the scheduling of the PUSCH transmission of current 7 pairs of terminals, also just abandoned the PHICH transmission.As seen, among the present invention, because the base station can be satisfied when terminal sends the needed transmitting power of PHICH at the current residual power that is used to transmit on the resource of PHICH, just use the PHICH transfer resource that distributes to send PHICH to terminal for terminal distribution PHICH transfer resource and according to described transmitting power, therefore, can effectively guarantee the receptivity of PHICH.
Description of drawings
The method flow schematic diagram that Fig. 1 provides for the embodiment of the invention;
The device structure schematic diagram that Fig. 2 provides for the embodiment of the invention.
Embodiment
In order to guarantee the receptivity of PHICH, the embodiment of the invention provides a kind of downlink transmission method, in this method, the current residual power of base station on the current resource that is used to transmit PHICH can satisfy when terminal sends the needed transmitting power of PHICH, just use the PHICH transfer resource that distributes to send PHICH to terminal for terminal distribution PHICH transfer resource and after the uplink scheduling signaling that sends the PUSCH transmission to terminal, otherwise, abandon the current scheduling that the PUSCH of terminal is transmitted.
Referring to Fig. 1, the downlink transmission method that the embodiment of the invention provides may further comprise the steps:
Step 10: after the base station is terminal distribution Physical Uplink Shared Channel (PUSCH) transfer resource, determine to send the needed transmitting power of the automatic request retransmission indicating channel of physical mixed (PHICH) to terminal according to the down channel situation of terminal;
Step 11: the base station is according to the current residual power on the resource that is used to transmit PHICH, determine whether to satisfy the demand of described transmitting power, if, it then is terminal distribution PHICH transfer resource, and after sending the uplink scheduling signaling of PUSCH transmission to terminal, use the PHICH transfer resource that distributes to send PHICH according to described transmitting power to terminal, otherwise, the current scheduling that the PUSCH of terminal is transmitted abandoned.
In the step 10, determine to send the needed transmitting power of PHICH to terminal according to the down channel situation of terminal, its specific implementation can be as follows:
The 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 and revise, obtain the equivalent spectrum efficiency eff of this terminal under PHICH with minor function PHICH: eff PHICH=f (eff PDSCH, TM (UE i)), wherein, eff PDSCHBe 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 then arranged PHICH=eff PDSCHAnd 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 then 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 then arranged PHICH=eff PDSCHWherein, Δ 1Compensating factor when transmitting for PHICH for the spectrum efficiency equivalence of transmission mode word more than 3 sign indicating number.
The base station determines that according to the corresponding curve with spectrum efficiency of signal to noise ratio the PHICH of the equivalent spectrum efficiency correspondence 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 the base station, obtain going up needed transmitting power P at each Resource Unit (RE) when terminal sends PHICH PHICH(UE), for example, PHICH target signal to noise ratio and PHICH are measured signal to noise ratio subtract each other, obtain when terminal sends PHICH needed transmitting power on each RE.Definite method of PHICH target signal to noise ratio is as follows: the transmission code rate of determining PHICH, the information bit before this transmission code rate equals to encode and the ratio of the information bit behind the coding, search the mapping table of code check and signal to noise ratio then, the signal to noise ratio that obtains this transmission code rate correspondence is the PHICH target signal to noise ratio.
Accordingly, in the step 11, the base station determines whether to satisfy the demand of described transmitting power according to the current residual power on the resource that is used to transmit PHICH, and its specific implementation can be as follows:
The base station is for each OFDM (OFDM) symbol of descending control area in the subframe of PIHCH transmission place, judge respectively whether 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 described terminal PIHCH the RE number that takies on this OFDM symbol and described when terminal sends PHICH on each RE the product of needed transmitting power; Here, the RE number that the PIHCH of terminal takies on the OFDM symbol, 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 TS 36.211.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 judging to be is, then the demand of described transmitting power is determined to satisfy in the base station, otherwise, definite demand that can not satisfy described transmitting power.
In the step 11, the base station is a 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 is determined according to current PUSCH distribution of transmission resource result in the base station; If there is the operable PHICH resource of current terminal, then arrive step B, otherwise, to step D;
Step B: from the operable PHICH resource of current terminal, choose a PHICH resource allocation and give this terminal; The DMRS cyclic shift value is determined according to the PHICH resource of distributing in the base station, and issues the uplink scheduling signaling of the PUSCH resource information of carrying this DMRS cyclic shift value and distribution to terminal;
Step C: the base station uses the PHICH resource of distributing to send PHICH to terminal according to described transmitting power behind the PUSCH that receives the terminal transmission, finishes;
Step D: the current scheduling that the PUSCH of terminal is transmitted is abandoned in the base station, finishes; Or the base station is terminal distribution PUSCH transfer resource again, and returns steps A, and promptly the base station redefines the operable PHICH resource of current terminal according to new PUSCH distribution of transmission resource result; Choosing a PHICH resource from the PHICH resource that redefines redistributes to terminal, redefine the DMRS cyclic shift value according to the PHICH resource of redistributing, and issue the uplink scheduling signaling of carrying DMRS cyclic shift value that redefines and the PUSCH resource information of redistributing to terminal; Behind 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 is determined according to PUSCH distribution of transmission resource result in above-mentioned base station, and its specific implementation can be as follows:
The base station is for each available in system DMRS cyclic shift value, 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 BDA0000067471940000081
With orthogonal sequence number in the group
Figure BDA0000067471940000082
Form a PHICH resource index combination ( n PHICH group , n PHICH seq ) ;
The base station is for each the PHICH resource index combination that forms
Figure BDA0000067471940000084
Whether the PHICH resource that judge in the subframe of PIHCH transmission place respectively, this PHICH resource index combination is identified has distributed to other-end, and when being judged as not, the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal.
Preferable, judging that the PHICH resource that the combination of PHICH resource index is identified is unallocated to before being defined as the operable PHICH resource of current terminal after the other-end and with the PHICH resource that this PHICH resource index combination is identified, the base station can further be judged in this PHICH resource index combination
Figure BDA0000067471940000085
In the 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 PHICHWhether the absolute value of difference (UE) is less than difference power higher limit between predefined user; The difference power higher limit is the numerical value greater than 0 between this user; The base station is if judge less than difference power higher limit between described user, then 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 identified is not defined as the operable PHICH resource of current terminal.
Above-mentioned base station is chosen a PHICH resource allocation and is given terminal from the operable PHICH resource of current terminal, its specific implementation can be as follows:
The base station is for operable each the PHICH resource of current terminal, determine respectively using this PHICH resource total emission power on the RE in this PHICH resource when described terminal sends PHICH, whether be no more than predefined RE transmitting power fiducial value, if, determine that then 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 carry out power back-off; Here, using PHICH resource total emission power on the RE in this PHICH resource when described terminal sends PHICH to be: described to the needed transmitting power P of terminal transmission PHICH PHICH(UE) go up the transmitting power sum of other each terminals with this RE.
If there is the PHICH resource that does not need to carry out the excess power compensation, terminal is given in the PHICH resource allocation that then never needs to carry out to choose in the PHICH resource of excess power compensation a dump power minimum, otherwise, it be 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 described terminal transmission PHICH that terminal, power back-off amplitude are given in the PHICH resource allocation of choosing a power back-off amplitude minimum from the operable PHICH resource of current terminal.
In the step 11, the base station on the PHICH resource of distributing when terminal sends 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; 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) go up the transmitting power sum of other-end with this RE.
Below the present invention is specifically described:
Control well cooperating at existing PHICH resource allocation and PHICH power, cause occurring the problem that the presence of intercell interference fluctuation is violent or the PHICH receptivity is difficult to guarantee easily, the present invention proposes a kind of new PHICH dynamic resource allocation method.The particular content of this method is as follows:
In order to avoid that as far as possible the transmitting power of PHICH is adjusted, (Resource Element RE), considers to determine in advance an every Resource Unit energy of transmitting power (Energy per RE, EPRE) value P for the shared Resource Unit of PHICH PHICHE_EPRE(n Group), this EPRE value can be the PHICH transmitting power according to static this sub-district expectation set of the EPRE of this sub-district CRS, also can be 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 need to finish descending sub frame n+k PHICHThe RE resource of CRS and PCFICH takies and power division in advance in the interior descending control area.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 sub-district, thereby determine the number of PHICH group
Figure BDA0000067471940000101
And the configuration of current PHICH is to 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 is then at subframe n-K PUSCHWhen carrying out the PUSCH resource allocation for UEi, the PUSCH resource distribution module calls the PHICH resource distribution module and carries out the PHICH resource allocation after distributing the PUSCH transfer resource, and the PHICH resource distribution module is determined need be at descending sub frame n+k PHICHTo PUSCH transmission the carrying out ACK/NACK feedback of sub-frame of uplink n, carry out the PHICH distribution of transmission 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 DMRSSpecifically comprise the steps 1.1-step 1.3:
Step 1.1: for UE i, when determining to guarantee the PHICH receptivity according to its down channel situation, the PHICH of UE transmits needed transmitting power P PHICH(UE i), and consider this UE iPHICH be transmitted in the magnitude relationship of dump power on transmitting power required on each OFDM symbol of descending control area and each the OFDM symbol (rated power of dump power=base station on the OFDM symbol-used power):
If exist the dump power on any OFDM symbol can not satisfy current UE iPower demand on this OFDM symbol, then this UE iPHICH resource allocation failure, and inform the PUSCH resource distribution module;
If the dump power on all OFDM symbols all satisfies UE iPower demand, then execution in step 1.2.
Step 1.2: according to the PUSCH transfer resource of subframe n minimum PRB sequence number at first Time Slot Occupancy
Figure BDA0000067471940000111
Determine current UE iThe PHICH group set that can select is determined all operable index combinations according to the set of available orthogonal sequence number in each PHICHgroup Generate UE iPHICH resource allocation addressing set
Figure BDA0000067471940000113
If S set is empty, then this UE iPHICH resource allocation failure, and the PHICH resource allocation result returned to the PUSCH resource distribution module; If S is not empty, then execution in step 1.3.
Step 1.3: gather for addressing
Figure BDA0000067471940000114
Judging whether this addressing set exists does not need to carry out the excess power compensation (according to the dump power in the current PHICH grouping and this UE iPHICH transmission desired power between relation judge) the index combination
Figure BDA0000067471940000115
Form S set 1, S1 does not need to carry out the set that the index of excess power compensation constitutes for all;
If S1 be empty, then in S set 1, select the ownership PHICH dump power minimum of dividing into groups
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 the excess power compensation, definite simultaneously 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 PUSCH resource distribution module resource allocation success.
Step 2:PUSCH resource distribution module is further handled according to the resource allocation result that the PHICH resource distribution module returns: if PHICH resource allocation success thinks that then this is for UE iPUSCH resource allocation success; If PHICH resource allocation failure 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 execution in step 1 again, attempt the PHICH resource allocation again.
Step 3: the base station need 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 the corresponding PHICH resource.
For step 1.1, determine UE iPHICH when transmitting needed transmitting power, its concrete grammar is as follows:
At first: according to UE iDownlink transfer pattern TM (UE i), to this UE iPhysical Downlink Shared Channel (Physical Downlink Shared Channel, spectrum efficiency eff 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 efficient, 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).
At last: 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 satisfy current UE iPower demand the time, concrete grammar is as follows:
At first: UE is determined in configuration according to current area PHICH iPHICH be transmitted in the RE number that the needs on each OFDM symbol of descending control area take, it still is that the extended pattern directly obtains that this RE number can be configured to the normal pattern according to current area PHICH.
Then: according to dump power (power that base station rated power-Resources allocation consumed), the UE of each OFDM symbol of current descending control area iOn each OFDM symbol, need the RE number and the single RE desired power amplitude P that take PHICH(UE i) judge: if the power magnitude P of the single RE of RE number * that the OFDM symbol dump power＜UE on this OFDM symbol takies on this OFDM symbol PHICH(UE i), think that then the gross power on this OFDM symbol can not satisfy the power demand of current UE; Otherwise think the power demand that can satisfy current UE.
For step 1.2, generate UE iThe PHICH available resource set
Figure BDA0000067471940000131
Concrete grammar as follows:
At first: determine minimum PRB sequence number according to the PRB resource that the PUSCH resource distribution module is selected
Figure BDA0000067471940000132
With this
Figure BDA0000067471940000133
Be benchmark Ergodic Theory n DMRSEach n in the set DMRS, the formula that provides according to background technology calculates the PHICH packet numbering then
Figure BDA0000067471940000134
With orthogonal sequence number in the group
Figure BDA0000067471940000135
Form addressable PHICH resource index combination
Figure BDA0000067471940000136
Then: make up for the PHICH resource index
Figure BDA0000067471940000137
Judge according to following factor whether it is available: if this index-group is combined in subframe n+k PHICHUnallocated other users of giving and affiliated PHICH divide into groups In, the PHICH transmitting power of having distributed the UE of PHICH resource
Figure BDA0000067471940000139
All satisfy:
| P PHICH ( CE j , n PHICH group ) - P PHICH ( UE i ) | < TH PHICHgroup _ diff
Think that then current PHICH resource index makes up 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 iTotal transmitting power is no more than this value on the corresponding RE resource to select can guarantee after this PHICH grouping to divide into groups this PHICH, thinks that then it belongs to S set 1.When S set 1 is not empty, then select power back-off amplitude minimum and can guarantee the PHICH allocation result of the PHICH grouping of PHICH receptivity as current UE, can easier successful distribution PHICH resource to guarantee follow-up UE.If S1 is empty, then in all available resource set, select the PHICH grouping of dump power minimum, difference with 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 PHICH resource allocation success, then 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 corresponding flag bit among the uplink scheduling authorization DCI format 0 is set according to its value, fill in simultaneously the corresponding information of DCI format 0 according to the result (as the PRB set that distributes, the MCS that selects or the like) of PUSCH resource allocation, and with 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 PHICHBe UE iDuring emission PHICH, according to obtaining UE iThe required transmitting power P of PHICH PHICH(UE i), with this power as UE i(make up at selected PHICH with resource index
Figure BDA0000067471940000143
Expression) the final transmitting power on.
Referring to Fig. 2, the embodiment of the invention also provides a kind of downlink transfer equipment, and this equipment comprises:
Power determining unit 20, be used to terminal distribution Physical Uplink Shared Channel PUSCH transfer resource after, determine to send the needed transmitting power of physical mixed automatic request retransmission indicating channel PHICH according to the down channel situation of terminal to terminal;
Demand determining unit 21 is used for determining whether to satisfy the demand of described transmitting power according to the current residual power on the resource that is used to transmit PHICH;
Downlink transfer unit 22, be used for when described demand determining unit is defined as being, be terminal distribution PHICH transfer resource, and after sending the uplink scheduling signaling of PUSCH transmission to terminal, use the PHICH transfer resource that distributes to send PHICH according to described transmitting power to terminal, when described demand determining unit is defined as not, abandon the current scheduling that the PUSCH of terminal is transmitted.
Described power determining unit 20 is used 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 the corresponding curve of signal to noise ratio, determine that the PHICH of the equivalent spectrum efficiency correspondence of terminal under PHICH measures signal to noise ratio with spectrum efficiency;
Measure signal to noise ratio and PHICH target signal to noise ratio according to PHICH, obtain when terminal sends PHICH needed transmitting power on each Resource Unit RE.
Described demand determining unit 21 is used for:
Each orthogonal frequency division multiplex OFDM symbol for descending control area in the subframe of PIHCH transmission place, judge respectively whether 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 on this OFDM symbol, takies of the PIHCH of described terminal and described on each RE the product of needed transmitting power;
If judging to be is, then determine to satisfy the demand of described transmitting power, otherwise, definite demand that can not satisfy described transmitting power.
Described downlink transfer unit 22 is used for:
When described demand determining unit is defined as being,, determine the operable PHICH resource of current terminal according to PUSCH distribution of transmission resource result; From the operable PHICH resource of current terminal, choose a PHICH resource allocation and give this terminal;
Determine the DMRS cyclic shift value according to the PHICH resource of distributing, and issue the uplink scheduling signaling of the PUSCH resource information of carrying this DMRS cyclic shift value and distribution to terminal;
Behind the PUSCH that receives the terminal transmission, use the PHICH resource of distributing to send PHICH to terminal according to described transmitting power.
Described downlink transfer unit 22 also is used for:
Current when not having the operable PHICH resource of terminal, abandon the scheduling of current PUSCH transmission to terminal; Or,
Again be terminal distribution PUSCH transfer resource, and redefine the operable PHICH resource of current terminal according to new PUSCH distribution of transmission resource result; Choosing a PHICH resource from the PHICH resource that redefines redistributes to terminal, redefine the DMRS cyclic shift value according to the PHICH resource of redistributing, and issue the uplink scheduling signaling of carrying DMRS cyclic shift value that redefines and the PUSCH resource information of redistributing to terminal; Behind the PUSCH that receives the terminal transmission, use the PHICH resource of redistributing to send PHICH to terminal.
Described downlink transfer unit 22 is used for:
For each available in system DMRS cyclic shift value,, be identified for identifying the PHICH group sequence number of a PHICH resource 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
Figure BDA0000067471940000161
With orthogonal sequence number in the group Form a PHICH resource index combination
Figure BDA0000067471940000163
For each the PHICH resource index combination that forms
Figure BDA0000067471940000164
Whether the PHICH resource that judge in the subframe of PIHCH transmission place respectively, this PHICH resource index combination is identified has distributed to other-end, and when being judged as not, 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 is used for:
Before after being judged as not and with the PHICH resource that this PHICH resource index combination is identified, being defined as the operable PHICH resource of current terminal, judge in this PHICH resource index combination
Figure BDA0000067471940000165
In the corresponding PHICH group, distributed the absolute value of PHICH transmitting power and described difference to the needed transmitting power of terminal transmission PHICH 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 judging less than described user.
Described downlink transfer unit 22 is used for:
For operable each the PHICH resource of current terminal, determine respectively using this PHICH resource total emission power on the RE in this PHICH resource when described terminal sends PHICH, whether be no more than predefined RE transmitting power fiducial value, if, determine that then 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 carry out power back-off;
If there is the PHICH resource that does not need to carry out the excess power compensation, terminal is given in the PHICH resource allocation that then never needs to carry out to choose in the PHICH resource of excess power compensation a dump power minimum, otherwise, it be 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 described terminal transmission PHICH that terminal, power back-off amplitude are given in the PHICH resource allocation of choosing a power back-off amplitude minimum from the operable PHICH resource of current terminal.
Described downlink transfer unit 22 is used for:
Send 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.
Described downlink transfer unit 22 is used for:
Send PHICH to terminal on the PHICH resource of distributing, the transmitting power on the RE in this PHICH resource is describedly to send the upward transmitting power sum of other-end of the needed transmitting power of PHICH and this RE to terminal.
To sum up, beneficial effect of the present invention comprises:
In the scheme that the embodiment of the invention provides, after the base station is terminal distribution PUSCH transfer resource, determine to send the needed transmitting power of PHICH according to the down channel situation of terminal to terminal, according to the current residual power on the resource that is used to transmit PHICH, determine whether to satisfy the demand of described transmitting power, if, it then is terminal distribution PHICH transfer resource, and after sending the uplink scheduling signaling of PUSCH transmission to terminal, use the PHICH transfer resource that distributes to send PHICH according to described transmitting power to terminal, otherwise, abandon the current scheduling that the PUSCH of terminal is transmitted, also just abandoned the PHICH transmission.As seen, among the present invention, because the base station can be satisfied when terminal sends the needed transmitting power of PHICH at the current residual power that is used to transmit on the resource of PHICH, just use the PHICH transfer resource that distributes to send PHICH to terminal for terminal distribution PHICH transfer resource and according to described transmitting power, therefore, can effectively guarantee the receptivity of PHICH.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the 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 to be used for the device of the function that is implemented 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 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 implemented in 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 producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in 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 get the basic creative notion of cicada, then 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 to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (20)

1. a downlink transmission method is characterized in that, this method comprises:
After the base station is terminal distribution Physical Uplink Shared Channel PUSCH transfer resource, determine to send the needed transmitting power of physical mixed automatic request retransmission indicating channel PHICH to terminal according to the down channel situation of terminal;
The base station is according to the current residual power on the resource that is used to transmit PHICH, determine whether to satisfy the demand of described transmitting power, if, it then is terminal distribution PHICH transfer resource, and after sending the uplink scheduling signaling of PUSCH transmission to terminal, use the PHICH transfer resource that distributes to send PHICH according to described transmitting power to terminal, otherwise, the current scheduling that the PUSCH of terminal is transmitted abandoned.
2. the method for claim 1 is characterized in that, described down channel situation according to terminal determines that sending the needed transmitting power of PHICH to terminal comprises:
The 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:
The base station determines that according to the corresponding curve with spectrum efficiency of signal to noise ratio the PHICH of the equivalent spectrum efficiency correspondence 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 the base station, obtain when terminal sends PHICH needed transmitting power on each Resource Unit RE.
3. method as claimed in claim 2 is characterized in that, described base station determines whether that according to the current residual power on the resource that is used to transmit PHICH the demand that can satisfy described transmitting power comprises:
The base station is for each orthogonal frequency division multiplex OFDM symbol of descending control area in the subframe of PIHCH transmission place, judge respectively whether 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 on this OFDM symbol, takies of the PIHCH of described terminal and described on each RE the product of needed transmitting power;
If judging to be is, then the demand of described transmitting power is determined to satisfy in the base station, otherwise, definite demand that can not satisfy described transmitting power.
4. the method for claim 1, it is characterized in that, described is terminal distribution PHICH transfer resource, and after sending the uplink scheduling signaling of PUSCH transmission to terminal, uses the PHICH transfer resource that distributes to send PHICH to terminal according to described transmitting power and comprise:
The operable PHICH resource of current terminal is determined according to PUSCH distribution of transmission resource result in the base station; From the operable PHICH resource of current terminal, choose a PHICH resource allocation and give this terminal;
The DMRS cyclic shift value is determined according to the PHICH resource of distributing in the base station, and issues the uplink scheduling signaling of the PUSCH resource information of carrying this DMRS cyclic shift value and distribution to terminal;
The base station uses the PHICH resource of distributing to send PHICH to terminal according to described transmitting power behind the PUSCH that receives the terminal transmission.
5. method as claimed in claim 4 is characterized in that, when not having the operable PHICH resource of terminal, this method further comprises current:
The current scheduling that the PUSCH of terminal is transmitted is abandoned in the base station; Or,
The base station is terminal distribution PUSCH transfer resource again, and redefines the operable PHICH resource of current terminal according to new PUSCH distribution of transmission resource result; Choosing a PHICH resource from the PHICH resource that redefines redistributes to terminal, redefine the DMRS cyclic shift value according to the PHICH resource of redistributing, and issue the uplink scheduling signaling of carrying DMRS cyclic shift value that redefines and the PUSCH resource information of redistributing to terminal; Behind the PUSCH that receives the terminal transmission, use the PHICH resource of redistributing to send PHICH to terminal.
6. method as claimed in claim 4 is characterized in that, described base station determines that according to PUSCH distribution of transmission resource result the operable PHICH resource of current terminal comprises:
The base station is for each available in system DMRS cyclic shift value, according to the PUSCH transfer resource of this DMRS cyclic shift value and distribution minimum Physical Resource Block PRB sequence number, be identified for identifying the PHICH group sequence number of a PHICH resource respectively at first Time Slot Occupancy
Figure FDA0000067471930000021
With orthogonal sequence number in the group
Figure FDA0000067471930000022
Form a PHICH resource index combination
Figure FDA0000067471930000023
The base station is for each the PHICH resource index combination that forms
Figure FDA0000067471930000024
Whether the PHICH resource that judge in the subframe of PIHCH transmission place respectively, this PHICH resource index combination is identified has distributed to other-end, and when being judged as not, 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 6 is characterized in that, after not being judged as not and with the PHICH resource that this PHICH resource index combination is identified, be defined as the operable PHICH resource of current terminal before, this method further comprises:
The base station is judged in this PHICH resource index combination
Figure FDA0000067471930000031
In the corresponding PHICH group, distributed the absolute value of PHICH transmitting power and described difference to the needed transmitting power of terminal transmission PHICH 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:
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 judging less than described user in the base station.
8. method as claimed in claim 6 is characterized in that, described base station is chosen a PHICH resource allocation and comprised to terminal from the operable PHICH resource of current terminal:
The base station is for operable each the PHICH resource of current terminal, determine respectively using this PHICH resource total emission power on the RE in this PHICH resource when described terminal sends PHICH, whether be no more than predefined RE transmitting power fiducial value, if, determine that then 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 carry out power back-off;
If there is the PHICH resource that does not need to carry out the excess power compensation, terminal is given in the PHICH resource allocation that then never needs to carry out to choose in the PHICH resource of excess power compensation a dump power minimum, otherwise, it be 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 described terminal transmission PHICH that terminal, power back-off amplitude are given in the PHICH resource allocation of choosing a power back-off amplitude minimum from the operable PHICH resource of current terminal.
9. method as claimed in claim 8 is characterized in that, the described PHICH resource of distributing of using according to described transmitting power comprises to terminal transmission PHICH:
The 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.
10. as arbitrary described method among the claim 1-8, it is characterized in that the described PHICH resource of distributing of using according to described transmitting power comprises to terminal transmission PHICH:
The base station sends PHICH to terminal on the PHICH resource of distributing, the transmitting power on the RE in this PHICH resource is describedly to send the upward transmitting power sum of other-end of the needed transmitting power of PHICH and this RE to terminal.
11. a downlink transfer equipment is characterized in that, this equipment comprises:
Power determining unit, be used to terminal distribution Physical Uplink Shared Channel PUSCH transfer resource after, determine to send the needed transmitting power of physical mixed automatic request retransmission indicating channel PHICH according to the down channel situation of terminal to terminal;
The demand determining unit is used for determining whether to satisfy the demand of described transmitting power according to the current residual power on the resource that is used to transmit PHICH;
The downlink transfer unit, be used for when described demand determining unit is defined as being, be terminal distribution PHICH transfer resource, and after sending the uplink scheduling signaling of PUSCH transmission to terminal, use the PHICH transfer resource that distributes to send PHICH according to described transmitting power to terminal, when described demand determining unit is defined as not, abandon the current scheduling that the PUSCH of terminal is transmitted.
12. equipment as claimed in claim 11 is characterized in that, described power determining unit is used 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 the corresponding curve of signal to noise ratio, determine that the PHICH of the equivalent spectrum efficiency correspondence of terminal under PHICH measures signal to noise ratio with spectrum efficiency;
Measure signal to noise ratio and PHICH target signal to noise ratio according to PHICH, obtain when terminal sends PHICH needed transmitting power on each Resource Unit RE.
13. equipment as claimed in claim 12 is characterized in that, described demand determining unit is used for:
Each orthogonal frequency division multiplex OFDM symbol for descending control area in the subframe of PIHCH transmission place, judge respectively whether 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 on this OFDM symbol, takies of the PIHCH of described terminal and described on each RE the product of needed transmitting power;
If judging to be is, then determine to satisfy the demand of described transmitting power, otherwise, definite demand that can not satisfy described transmitting power.
14. equipment as claimed in claim 11 is characterized in that, described downlink transfer unit is used for:
When described demand determining unit is defined as being,, determine the operable PHICH resource of current terminal according to PUSCH distribution of transmission resource result; From the operable PHICH resource of current terminal, choose a PHICH resource allocation and give this terminal;
Determine the DMRS cyclic shift value according to the PHICH resource of distributing, and issue the uplink scheduling signaling of the PUSCH resource information of carrying this DMRS cyclic shift value and distribution to terminal;
Behind the PUSCH that receives the terminal transmission, use the PHICH resource of distributing to send PHICH to terminal according to described transmitting power.
15. equipment as claimed in claim 14 is characterized in that, described downlink transfer unit also is used for:
Current when not having the operable PHICH resource of terminal, abandon the scheduling of current PUSCH transmission to terminal; Or,
Again be terminal distribution PUSCH transfer resource, and redefine the operable PHICH resource of current terminal according to new PUSCH distribution of transmission resource result; Choosing a PHICH resource from the PHICH resource that redefines redistributes to terminal, redefine the DMRS cyclic shift value according to the PHICH resource of redistributing, and issue the uplink scheduling signaling of carrying DMRS cyclic shift value that redefines and the PUSCH resource information of redistributing to terminal; Behind the PUSCH that receives the terminal transmission, use the PHICH resource of redistributing to send PHICH to terminal.
16. equipment as claimed in claim 14 is characterized in that, described downlink transfer unit is used for:
For each available in system DMRS cyclic shift value,, be identified for identifying the PHICH group sequence number of a PHICH resource 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
Figure FDA0000067471930000061
With orthogonal sequence number in the group
Figure FDA0000067471930000062
Form a PHICH resource index combination
For each the PHICH resource index combination that forms
Figure FDA0000067471930000064
Whether the PHICH resource that judge in the subframe of PIHCH transmission place respectively, this PHICH resource index combination is identified has distributed to other-end, and when being judged as not, the PHICH resource that this PHICH resource index combination is identified is defined as the operable PHICH resource of current terminal.
17. equipment as claimed in claim 16 is characterized in that, described downlink transfer unit also is used for:
Before after being judged as not and with the PHICH resource that this PHICH resource index combination is identified, being defined as the operable PHICH resource of current terminal, judge in this PHICH resource index combination In the corresponding PHICH group, distributed the absolute value of PHICH transmitting power and described difference to the needed transmitting power of terminal transmission PHICH 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 judging less than described user.
18. equipment as claimed in claim 16 is characterized in that, described downlink transfer unit is used for:
For operable each the PHICH resource of current terminal, determine respectively using this PHICH resource total emission power on the RE in this PHICH resource when described terminal sends PHICH, whether be no more than predefined RE transmitting power fiducial value, if, determine that then 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 carry out power back-off;
If there is the PHICH resource that does not need to carry out the excess power compensation, terminal is given in the PHICH resource allocation that then never needs to carry out to choose in the PHICH resource of excess power compensation a dump power minimum, otherwise, it be 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 described terminal transmission PHICH that terminal, power back-off amplitude are given in the PHICH resource allocation of choosing a power back-off amplitude minimum from the operable PHICH resource of current terminal.
19. equipment as claimed in claim 18 is characterized in that, described downlink transfer unit is used for:
Send 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.
20., it is characterized in that described downlink transfer unit is used for as arbitrary described equipment among the claim 11-18:
Send PHICH to terminal on the PHICH resource of distributing, the transmitting power on the RE in this PHICH resource is describedly to send the upward transmitting power sum of other-end of the needed transmitting power of PHICH and this RE to terminal.
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