CN102111211B - Allocation method for a physical hybrid repeat request AICH and equipment adopting same - Google Patents

Abstract

The invention discloses an allocation method for a physical hybrid repeat request AICH (Acquisition Indicator Channel) and equipment adopting same, and relates to the technical field of wireless networks. The method expands the adjustable range when PHICH (Physical hybrid ABQ Indicator Channel) is allocated, lowers the probability that the PHICH can not be equipped onto a data transmission block, and improves the utilization efficiency of the PHICH. The method provided by the embodiment of the invention comprises the steps as follows: a joined field is generated according to an extended field and an n-DMRS (Data Management and Retrieval System) field in a physical downlink control channel, and the value of the extended n-DMRS can be defined according to the joined field; a PHICH index corresponding to the present uplink data transmission block is calculated out through utilizing the minimal label index of a PRB (Physical Recourse Block) occupied by the present uplink data transmission block and a value of the extended n-DMRS; and the PHICH corresponding to the present uplink data transmission block is defined by the PHICH index. The method is applicable to an occasion adopting a single carrier or multi-carrier.

Description

The distribution method of physical mixing retransmission indicating chanel and equipment

Technical field

The present invention relates to the radio network technique field, relate in particular to a kind of distribution method and equipment of physical mixing retransmission indicating chanel.

Background technology

At third generation partner program (3th Generation Partner Proiect, evolution whole world terrestrial wireless access (Evolved Universal Terrestrial Radio Access 3GPP), E-UTRA) in system, the sending/receiving of data is supported mixed automatic retransfer request (Hybrid Automatic Repeat Request, HARQ) technology is to reduce data transmission delay and to obtain higher message transmission rate.In the HARQ technology, the data receiver need to data receiver feedback acknowledgment/deny (ACK/NACK) information, confirm to help data receiver whether data are correctly received by the data receiver.

Down link direction in 3GPP E-UTRA system, base station (as eNodeB) is by downlink physical combining retransmission indicating channel (Physical Hybrid ARQ Indicator Channel, PHICH) to the ACK/NACK information of subscriber equipment (UE) feeding back uplink data receiver, namely base station (as eNodeB) sends ACK/NACK information to the data transmission block whether it correctly receives from UE to UE.

Yet, when the minimum label index of the Physical Resource Block that scheme of the prior art takies when the transmitting uplink data piece is determined, if the ACK/NACK that the PHICH channel that can determine has been allocated for other transmitting uplink data piece replys, according to existing technology, even also there is untapped PHICH channel in system, also can't distribute the PHICH channel for current transmitting uplink data piece, the ACK/NACK that can't make this transmitting uplink data piece replys, obviously, this had both caused the waste of resource also can't satisfy user's demand.

Summary of the invention

For solving problems of the prior art, embodiments of the invention provide a kind of distribution method and equipment of physical mixing retransmission indicating chanel.

For achieving the above object, embodiments of the invention adopt following technical scheme:

The embodiment of the present invention provides a kind of distribution method of physical mixing retransmission indicating chanel to comprise:

Generate the associating field according to the field n-DMRS field of the extended field in Physical Downlink Control Channel and indication demodulated reference signal cyclic shift value, and the value of the n-DMRS after determining to expand according to described associating field;

Utilize the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared Physical Resource Block PRB of current transmitting uplink data piece;

Determine PHICH channel corresponding to described current transmitting uplink data piece according to described PHICH channel indexes.

The embodiment of the present invention also provides a kind of network equipment, and equipment comprises:

Expansion n-DMRS determining unit generates the associating field for the extended field according to Physical Downlink Control Channel with the field n-DMRS field of indicating the demodulated reference signal cyclic shift value, and the n-DMRS value after determining to expand according to described associating field;

The channel indexes computing unit is for the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of the n-DMRS after the minimum label index that utilizes the shared Physical Resource Block PRB of current transmitting uplink data piece and expansion;

Allocation units determine according to described PHICH channel indexes the PHICH channel that current transmitting uplink data piece is corresponding.

The technical scheme of the embodiment of the present invention is utilized the combined coding of extended field and n-DMRS field, has expanded the numerical value span of n-DMRS; Utilize the n-DMRS value after expansion, when the minimum label index of the Physical Resource Block that takies at the transmitting uplink data piece was determined, the scope of this transmitting uplink data piece distribution PHICH channel can be expanded as in the base station.The technical scheme of the embodiment of the present invention has reduced can't be the probability of transmitting uplink data piece configuration PHICH channel, has improved the utilization ratio of PHICH channel resource, has satisfied different scenes and has used lower user's demand.

Description of drawings

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The distribution method flow chart of the PHICH channel that Fig. 1 provides for one embodiment of the invention one;

The distribution principle schematic diagram of a kind of PHICH channel that Fig. 2 provides for another embodiment of the present invention;

The distribution principle schematic diagram of another PHICH channel that Fig. 3 provides for another embodiment of the present invention;

The distribution principle schematic diagram of a kind of PHICH channel that Fig. 4 provides for another embodiment of the present invention;

The PHICH channel subset distribution principle schematic diagram that Fig. 5 provides for another embodiment of the present invention;

A kind of network equipment structural representation that Fig. 6 also provides for another embodiment of the present invention;

Fig. 7 also provides another network equipment structural representation for another embodiment of the present invention;

The structural representation of the receiving equipment that Fig. 8 provides for another embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

For clearly demonstrating the technical scheme of the embodiment of the present invention, at first the scene in Long Term Evolution (Long TermEvolution, the LTE) system as example, describes some technical characterictics that relate in the embodiment of the present invention.In the LTE system, subscriber equipment sends process from data to the base station is: subscriber equipment receives from the PDCCH channel physical layer uplink shared channel scheduling authorization command that the base station issues; The base station is by the minimum label I of the shared Resource Block of physical layer Uplink Shared Channel _{PRB_RA} ^Lowest_indexUplink demodulation pilot tone circular shift information n with 3 bit indications _DMRS(or being expressed as n-DMRS) comes to be the descending PHICH channel of user equipment allocation, wherein I _{PRB_RA} ^Lowest_indexThe physical layer uplink shared channel scheduling authorization command indicating that all carries at the PDCCH channel with n-DMRS; Subscriber equipment sends data transmission block to the base station on the physical layer Uplink Shared Channel that distributes; The base station is at the physical layer Uplink Shared Channel receive data transmission block that is user equipment allocation, and judges whether correct reception; If base station receive data transmission block is correct, send ACK information to subscriber equipment on the descending PHICH channel that distributes, otherwise, send nack message to subscriber equipment on the descending PHICH channel that distributes; Accordingly, subscriber equipment receives the ACK/NACK information of base station feedback on the descending PHICH channel that distributes, if receive ACK information, subscriber equipment confirms that the base station has correctly received this data transmission block, no longer this data transmission block is sent, if receive nack message and do not reach maximum retransmission repeat to send this data transmission block to the base station, with this, improve the transmission reliability of data transmission block.

In the LTE system, descending PHICH channel resource distributes as unit to organize (group), and the number of PHICH group is determined by the information of system broadcasts signaling indication.According to said process as can be known, in existing LTE single-carrier system, provide the minimum label I of the shared Resource Block of data transmission block of dispatching in a kind of PDCCH of utilization _{PRB_RA} ^Lowest_indexDetermine jointly that with the uplink demodulation pilot tone circular shift information n-DMRS index of 3 bit indications this data transmission block shines upon the method for PHICH channel resource.

At the further evolution of LTE system and system high Long Term Evolution (the Long Term Evolution-Advanced of enhancing, LTE-A) in system, carrier aggregation (Carrier Aggregation) technology is selected to support wider bandwidth, with satisfy International Telecommunications Union for the 4th generation the communication technology the peak data rate requirement.In carrier aggregation, the frequency spectrum of two or more member carriers (Component Carrier) is grouped together in together to obtain the LTE-A system of wider transmission bandwidth.The LTE subscriber equipment can only access one of them member carrier and carry out data transmit-receive, carries out data transmit-receive and the LTE-A subscriber equipment can access a plurality of member carriers simultaneously according to its ability and business demand.Carrier aggregation technology also is spectrum aggregating (SpectrumAggregation) technology sometimes, perhaps bandwidth expansion (Bandwidth Extension) technology.In carrier aggregation technology, each member carrier has independently HARQ process, and can configure different uplink and downlink member carrier numbers for the LTE-A subscriber equipment.When the LTE-A subscriber equipment accesses a plurality of downlink member carriers and/or a plurality of uplink member carrier transceiving data simultaneously, be that a plurality of PDCCH channels that a plurality of downlink member carriers issue distribute respectively uplink ACK/NACK channel a uplink member carrier possibly, and/or will be that the base station is at a plurality of physical layer Uplink Shared Channels difference allocation of downlink ACK/NACK channels of a plurality of uplink member carrier scheduling at a downlink member carrier.

Under the application scenarios of carrier aggregation technology, LTE-A UE is emission or receive data on a plurality of uplink member carrier or downlink member carrier simultaneously.According to the standard progress of current LTE-A, LTE-A UE transmits on ACK/NACK responder link corresponding to the data block of transmitting on certain up-link carrier carrying for the descending carrier of dispatching this data transmission block (being UL grant).Based on this, if the base station is used for the member carrier number of transmitting uplink data greater than being used for simultaneously the member carrier number that downlink data receives when configuring for this UE, and/or, the UL grant that is used for dispatching a plurality of up-link carrier transfer of data concentrates on a descending carrier and launches, and the base station will configure at least a plurality of PHICH channels and replys for the ACK/NACK of the physics shared data transmission piece of this UE on a plurality of up-link carriers on a downlink member carrier.At this moment, if the minimum label I of this UE physics shared data transmission piece on a plurality of up-link carriers _{PRB_RA} ^Lowest_indexThe minimum label I of identical or this UE physics shared data transmission piece on certain up-link carrier _{PRB_RA} ^Lowest_indexThe minimum label I of the physics shared data transmission piece with other UE on other up-link carrier _{PRB_RA} ^Lowest_indexIdentical, the base station need to arrange different n _DMRSDetermine the ACK/NACK responder link of physics shared data transmission piece on a plurality of up-link carriers.

When the transmitting uplink data of LTE-A UE adopts the pattern of Multi-User Dimension multiplexing (MU-MIMO), at each Transmission Time Interval, the transmitting uplink data piece of the transmitting uplink data piece of this UE needs and other UE is in identical up temporal frequency (or frequency time) transmitted over resources; At this moment, the base station need to be the transmitting uplink data piece feeding back ACK of each UE/NACK response message, the minimum label I of the Resource Block that takies due to the transmitting uplink data piece of different UEs _{PRB_RA} ^Lowest_indexIdentical, thus PHICH channel corresponding to the transmitting uplink data piece of different UEs can only be by the different n of configuration _DMRS(or n-DMRS) determines.

The distribution method of the physics commingle retransmission indicating channel resource that one embodiment of the invention provides, as shown in Figure 1, described method comprises:

Step 11: generate the associating field according to field (n-DMRS) field of the extended field in Physical Downlink Control Channel and indication demodulated reference signal cyclic shift value, and the value of the n-DMRS after determining to expand according to described associating field;

Step 12: the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of utilizing minimum label index and the n-DMRS after expansion of the shared Physical Resource Block of current transmitting uplink data piece (Physical ResourceBlock, PRB);

Step 13: determine PHICH channel corresponding to described current transmitting uplink data piece according to described PHICH channel indexes.

Can utilize above-mentioned steps 11 to step 13 to distribute the PHICH channel for UE in base station side, in end side, terminal is defined as according to the n-DMRS value of expansion and the minimum label of the Resource Block that takies of transmitting uplink data piece the PHICH channel that the current data transmission block distributes, and carries out the ACK/NACK detection on the PHICH channel of determining.

The value of n-DMRS after above-mentioned definite expansion can only comprise 8 kinds of values of n-DMRS field indication in the LTE system, also can comprise 8 kinds of values and other numerical value except these 8 kinds of values of n-DMRS field indication in the LTE system.

The technical scheme of the embodiment of the present invention is utilized the combined coding of extended field and n-DMRS field, has expanded the numerical value span of n-DMRS; Utilize the n-DMRS value after expanding, under the minimum label of the Resource Block that the transmitting uplink data piece of determining takies, the base station can enlarge the scope of PHICH channel allocation, reduced and to be the probability of transmitting uplink data piece configuration PHICH channel, improved the utilization ratio of PHICH channel resource, satisfied different scenes and used lower user's demand.

The below is elaborated to the distribution method of the PHICH resource that another embodiment of the present invention provides.The technical scheme that the embodiment of the present invention provides can be applied in the LTE system, also can be applied in advanced Long Term Evolution (LTE-Advanvced, LTE-A) system.

In the embodiment of the present invention two, expanded the span of n-DMRS numerical value; Utilize the n-DMRS value after expanding, the base station can enlarge adjustable scope when distributing the PHICH channel for UE, and this extended operation is feasible.

With (the Carrier indicator in down control channel, CI) field, and/or has other field of redundant state and/or reserved state in PDCCH, and/or the field with predetermined bit that newly increases (for example newly having added the field of 1 bit or 2 bits), as extended field.With extended field and n-DMRS field combined coding, can obtain larger n-DMRS indicating range.

Above-mentioned extended field can for having the field of one or more bits, also can be the field of a sky.in addition, extended field not only can be used for the span of expansion n-DMRS, enlarge the adjusting range of PHICH channel resource, also can be combined with other field in PDCCH, be used for realizing other function control, can be combined with CQI feedback indication bit aperiodic in PDCCH UL grant as extended field, be used to indicate the indication configuration of CQI feedback concrete some or some up-link carrier is corresponding aperiodic in multicarrier system etc., whether the enabling and to configure by high-level signaling of concrete function, such as the proprietary signaling of UE, or in extended field, the different conditions indication is distinguished.

Further, when utilizing extended field and n-DMRS field to form the associating field, the cyclic shift value that also needs to determine according to the n-DMRS field uplink reference signals due to UE, therefore the position of n-DMRS field in the associating field must be determined, and base station and UE need to know the position of n-DMRS field in the associating field.Before can being placed on above-mentioned extended field as, n-DMRS field or afterwards.When the n-DMRS field is placed on after above-mentioned extended field, be the rightmost bit of n-DMRS field during as the least significant bit (LSB:least significant bit) of associating field, can guarantee in the mapping relations of cyclic shift value of n-DMRS value after front 8 expansions and uplink reference signals and LTE that the mapping relations of the cyclic shift value of 8 n-DMRS values and uplink reference signals are consistent.

In the LTE system, need the 3 concrete n-DMRS values of bit indication in PDCCH.Under multicarrier system, need to introduce carrier wave indication (Carrier indicator, CI) field in PDCCH, be used to indicate the index of descending (Downlink, DL) or up (Uplink, UL) member carrier of current PDCCH scheduling.Greatest member's carrier wave (Component Carrier that present carrier aggregation technology can be supported, CC) quantity is 5 carrier waves, but the maximum carrier number that distributes for UE is less than or equal to 5, and the maximum number bits that system is used for the carrier wave indication is 3 bits.For example when the maximum carrier number that UE is distributed is 2, the bit number that is used for this UE carrier wave indication is 1 get final product, and other bit or the state that are left can be used as extended field.The embodiment of the present invention is carried out combined coding with the bit of CI field and the bit of n-DMRS field, utilize the redundant state of CI bit, enlarge the indicating range of n-DMRS, utilize the n-DMRS value after expansion, adjustable scope when having increased the base station and being UE distribution PHICH channel.

The indicating range of the n-DMRS that the below can obtain in the mode that adopts CI field and n-DMRS field combined coding as the example analysis, this scope can represent with A, and A numerically is the total number of the n-DMRS after expansion.

If the number of the current maximum up polymerization carrier wave for UE configuration in base station is k, the bit number that is used for the indication of CI field is the n bit; 3 bits that are used for the n-DMRS indication in this n bit and system are combined, and are m bit, i.e. m=n+3 in conjunction with the bit number of rear associating field.Obviously, this associating field can be indicated 2m state.At this moment, utilize the value of the scope A that the n-DMRS after the expansion of each UL member carrier after CI field and n-DMRS field combined coding can indicate to be A=floor (2 ^m/ k), the foor () function representation here rounds downwards.For example, k=5, during n=3, A=12; K=4, during n=3, A=16.Thereby the adjusting range (A can only be 8) with respect to the LTE n-DMRS of system, the mode of the bit of embodiment of the present invention employing CI field and the bit combined coding of n-DMRS field, increased the adjusting range of n-DMRS, when accordingly, the base station is UE distribution PHICH channel, adjustable scope also increases.

In the embodiment of the present invention, to the data transmission block of single up-link carrier, can utilize the corresponding PHICH channel indexes of data transmission block of this up-link carrier of numerical computations of the n-DMRS after expansion by following three kinds of modes at least, the below describes respectively.

Mode one,

According to following formula, utilize the index group number parameter of the current transmitting uplink data piece of numerical computations of the minimum label index of the shared PRB of described offset parameter, current transmitting uplink data piece and the n-DMRS after expansion, and, utilize the index sequence number parameter of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece, obtain the corresponding PHICH channel indexes of current transmitting uplink data piece (n _PHICH ^Group, n _PHICH ^seq) or (n _PHICH ^seq, n _PHICH ^Group):

$n_{\mathrm{PHICH}}^{\mathrm{group}}=[(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+\mathrm{offset}]\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Mode two,

According to following formula, utilize the index sequence number parameter of the current transmitting uplink data piece of numerical computations of the minimum label index of the shared PRB of described offset parameter, current transmitting uplink data piece and the n-DMRS after expansion, and, utilize the index group number parameter of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece, obtain the corresponding PHICH channel indexes of current transmitting uplink data piece (n _PHICH ^Group, n _PHICH ^seq) or (n _PHICH ^seq, n _PHICH ^Group):

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

In mode one and mode two, with (n _PHICH ^Group, n _PHICH ^seq) or (n _PHICH ^seq, n _PHICH ^Group) as PHICH channel indexes, n _PHICH ^GroupBe index group number parameter, n _PHICH ^seqBe index sequence number parameter, N _SF ^PHICHBe spreading factor, I _{PRB_RA} ^Lowest_indexThe minimum label index of shared PRB when being the transmission of transmitting uplink data piece, n _DMRSBe the numerical value of the n-DMRS after expansion, N _PHICH ^GroupThe PHICH group number that the descending carrier that is associated with current up-link carrier is reserved for this up-link carrier, I _PHICHBe set to 1 during the transmit ascending data piece in 0 and the 5th or the 10th subframe of ascending-descending subframes configuration of TDD system, be set to 0 in other situation.

The value of offset is relevant to the scope of n-DMRS after expansion; If the span of n-DMRS after expansion be [0A-1], A is divided into the Q section, and Q=ceil (A/B), and the size of every section of front Q-1 section is B, the size of Q section is A-(Q-1) * B, wherein, function ceil () represents to round up.The B here represents the maximum PHICH channel number that can comprise in each PHICH group, the total number of the n-DMRS after A represents to expand.Each section is to there being an offset value, and the offset value possibility of different sections is identical also may be different; For current q (for the individual segmentation of 1≤q≤Q), determine that the principle of the value of its offset is:

The PHICH channel indexes of determining according to the offset value of the q section of the minimum label index of the value of the n-DMRS after expansion in the q section, PRB that the transmitting uplink data piece takies and setting, be as much as possible with front (q-1) section in the PHICH channel indexes definite according to the offset value of each section of the minimum label index of the value of the n-DMRS after expansion in each section, PRB that the transmitting uplink data piece takies and setting not identical.Adopt the purpose of such design principle to be, scope according to the n-DMRS value after expansion, correspondingly adjust the value of the offset of different sections, make as far as possible the determined PHICH channel indexes of minimum label index of the PRB that the n-DMRS value that adopts after different expansions and identical transmitting uplink data piece take different, thus adjustable scope when increasing the base station and being UE distribution PHICH channel.Namely according to the numerical value of n-DMRS after expansion, offset parameter is set, so that when the minimum label index of the shared PRB of transmitting uplink data piece is determined, the PHICH channel indexes of the transmitting uplink data piece that goes out according to the numerical computations of the n-DMRS after the minimum label index of described offset parameter, PRB and different expansion is not identical.

According to mentioned above principle, for mode one, the value of a kind of offset can be expressed as follows:

Wherein, M gets 0 to Q-1.

Mode three,

According to following formula, utilize the numerical value of the n-DMRS after expanding and the minimum label index of the PRB that current transmitting uplink data piece takies to determine the corresponding PHICH channel indexes of current data transmission block (n _PHICH ^Group, n _PHICH ^seq) or (n _PHICH ^seq, n _PHICH ^Group)::

$n_{\mathrm{PHICH}}^{\mathrm{group}}=((I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+\mathrm{offset})\mathrm{mod}/{\mathrm{NUM}}_{\mathrm{PRB}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Here NUM _PRBTotal number for all PRB on the up-link carrier that transmits current transmitting uplink data piece; Offset is offset parameter, and the value of offset can be according to definite principle setting of the offset that describes in mode one and mode two, and/or considers that other parameter (as up member carrier index etc.) arranges; The mode of stating as defined above one of other parameter and the description in mode two.

From the above mentioned as seen, to mode three, all introduced offset parameter offset in mode one.The introducing purpose of offset is to avoid under the minimum label index of the PRB that identical transmitting uplink data piece takies, because different n-DMRS maps out identical PHICH channel indexes.The value of offset can be that system sets in advance, and can be also system's high-level signaling or physical layer signaling notice.

Referring to Fig. 2, be in mode once, work as N _PHICH ^GroupThe minimum label index of getting 4, PRB is 0 o'clock, the schematic diagram that the n-DMRS value of PHICH channel indexes after with different expansions changes.In Fig. 2, each stringer represents one group of PHICH channel, the corresponding PHICH channel of each foursquare little lattice.Corresponding 8 PHICH channel indexes (n when having shown that by each zigzag broken line that forms with the real segment of arrow n-DMRS value after expansion is for [07] and offset=0 in Fig. 2 _PHICH ^Group, n _PHICH ^seq), (n at this moment _PHICH ^Group, n _PHICH ^seq) be ((0,0), (1,1), (2,2), (3,3), (0,4), (1,5), (2,6), (3,7)); Corresponding 8 PHICH channel indexes (n when having shown that by each broken line that forms with the phantom line segments of arrow n-DMRS value after expansion is for [815] and offset=1 in Fig. 2 _PHICH ^Group, n _PHICH ^seq), (n at this moment _PHICH ^Group, n _PHICH ^seq) be ((1,0), (2,1), (3,2), (0,3), (Isosorbide-5-Nitrae), (2,5), (3,6), (0,7));

Referring to Fig. 3, be mode three times, work as N _PHICH ^GroupThe minimum label index of getting 4, PRB is 0 o'clock, the schematic diagram that the PHICH channel indexes changes with different n-DMRS values.In Fig. 3, each stringer represents one group of PHICH channel, the corresponding PHICH channel of each foursquare little lattice.Corresponding 8 PHICH channel indexes (n when having shown that by each zigzag broken line that forms with the real segment of arrow n-DMRS value after expansion is for [07] and offset=0 in Fig. 3 _PHICH ^Group, n _PHICH ^seq), (n at this moment _PHICH ^Group, n _PHICH ^seq) be ((0,0), (1,1), (2,2), (3,3), (0,4), (1,5), (2,6), (3,7)); Corresponding 8 PHICH channel indexes (n when having shown that by each broken line that forms with the phantom line segments of arrow n-DMRS value after expansion is for [815] and offset=4 in Fig. 3 _PHICH ^Group, n _PHICH ^seq), (n at this moment _PHICH ^Group, n _PHICH ^seq) be ((0,1), (1,2), (2,3), (3,4), (0,5), (1,6), (2,7), (3,0)).

The technical scheme of the embodiment of the present invention, extended field and n-DMRS field are carried out combined coding, expanded the span of the numerical value of n-DMRS, utilize the n-DMRS value after expanding, under the minimum label of the Resource Block that the transmitting uplink data piece of determining takies, the base station can enlarge the scope of PHICH channel allocation, has reduced to be the probability of transmitting uplink data piece configuration PHICH channel, improved the utilization ratio of PHICH channel resource, satisfied different scenes and used lower user's demand.

The technical scheme of another embodiment of the present invention is in the extended field of PDCCH, and/or in high-rise SIB information, and/or in the high-rise dedicated signaling of UE, sign is set, this sign is in order to the computational methods of at least two kinds of PHICH channel indexes of indication, as the first computational methods and the second computational methods, and carry out switching between different PHICH mapping methods.For the ease of the clear technical scheme of describing the embodiment of the present invention, in an embodiment of the present invention, adopted the printed words such as " first ", " second " that the essentially identical identical entry of function and efficacy or similar item are distinguished, it will be appreciated by those skilled in the art that the printed words such as " first ", " second " and right quantity and execution order limit.

When the below is no more than 4 with the up-link carrier number when maximum polymerization, utilize 1 bit idle in the CI field in the PDCCH channel as above-mentioned sign, realize the switching of above-mentioned different PHICH channel mapping methods.

In embodiments of the present invention, to single up-link carrier, when the state of the CI of free time bit is 0, indicate the first computational methods, the computational methods of PHICH channel indexes are according to the PHICH channel indexes computational methods that adopt in LTE, or aforesaid way one, or mode two, or the PHICH channel indexes computational methods that mode three is described are carried out;

When the state of this free time CI bit is 1, indicate the second computational methods, when carrying out the mapping of PHICH channel, can utilize according to following formula the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, the mode one in the definition of above-mentioned parameter such as embodiment two and the description of mode two.n _PHICH ^GroupBe index group number parameter, n _PHICH ^seqBe index sequence number parameter, N _SF ^PHICHBe spreading factor, I _{PRB_RA} ^Lowest_indexThe minimum label index of the shared PRB of current transmitting uplink data piece, n _DMRSBe the numerical value of the n-DMRS after expansion, N _PHICH ^GroupThe PHICH group number that the descending carrier that is associated with current up-link carrier is reserved for this up-link carrier, I _PHICHBe set to 1 during the transmit ascending data transmission block in 0 and the 5th or the 10th subframe of ascending-descending subframes configuration of TDD system, be set to 0 in other situation.

when adopting the second computational methods, transmit when a user's uplink data block and taken a plurality of PRB, when the PHICH channel indexes that the minimum label index of the PRB that the base station is shared according to the transmitting uplink data piece of this UE and the n-DMRS value of expansion are determined is identical with other user's PHICH channel indexes, after other PRB index that the base station can take according to the transmitting uplink data piece of this UE and expansion, the value of n-DMRS is determined the PHICH channel indexes of current data transmission block, like this base station avoided taking other UE acquiescence PHICH channel (namely, the PHICH channel of determining when the minimum label index of the PRB shared according to other UE transmitting uplink data piece and n-DMRS equal zero), reduced the complexity that base station dispatcher is adjusted.

Referring to Fig. 4, be to work as N _PHICH ^GroupGet 4, during first transmitting uplink data piece transmission, the minimum label index of shared PRB is 0 o'clock, and the PHICH channel indexes is with the schematic diagram of the n-DMRS value variation of different expansions.In Fig. 4, each stringer represents one group of PHICH channel, the corresponding PHICH channel of each foursquare little lattice.Shown under the first computational methods PHICH channel mapping method according to LTE by each zigzag broken line that forms with the real segment of arrow in Fig. 4, and the n-DMRS value of expansion corresponding 8 PHICH channel indexes when being [07]; In Fig. 4 by each broken line that forms with the phantom line segments of arrow illustrated according under the second computational methods in the n-DMRS value of expansion corresponding 4 PHICH channel indexes when [03].The second computational methods are particularly useful for the PHICH channel mapping under the application scenarios of the transmitting uplink data employing alone family spatial reuse (SU-MIMO) of LTE-A UE.

Under the SU-MIMO pattern, at each Transmission Time Interval, a plurality of different transmitting uplink data pieces are in identical up temporal frequency (or frequency time) transmitted over resources; If the base station is each transmitting uplink data piece feeding back ACK/NACK response message of this UE, the base station need to be replied for the ACK/NACK of a plurality of PHICH channels of this UE configuration for a plurality of transmitting uplink data pieces of this UE; At this moment, for this UE, the minimum label I of the Resource Block that takies due to different transmitting uplink data pieces _{PRB_RA} ^Lowest_indexIdentical, thus PHICH channel corresponding to different transmitting uplink data pieces can only be by the different n of configuration _DMRS(or n-DMRS) determines.

Be appreciated that, when needed, can utilize a plurality of different computational methods of above-mentioned sign indication, as the first computational methods, the second computational methods and the 3rd computational methods etc., base station dispatcher adopts different computational methods to calculate the PHICH channel indexes under each computational methods, and is that the transmitting uplink data piece distributes the PHICH channel according to the different mapping mode of this PHICH channel indexes employing.

The technical scheme of the embodiment of the present invention, user's different application demand is considered in the base station, utilize redundant bit or redundant state in extended field, indicate different PHICH computational methods, thereby make the base station can adopt different mapping modes to distribute the PHICH channel.

Consider in another embodiment of the present invention from the related different up-link carriers of single descending carrier on the conflict that may identically cause resource to distribute of the numerical value of first up PRB index of distributing for same UE or different UEs and n-DMRS, be a plurality of PHICH channel subset (subset) with PHICH channel distribution all on each descending carrier; The size of subset can be arranged by system's high-level signaling, perhaps by the physical layer signaling setting, is perhaps configured by system default; The number of PHICH channel subset is equal to the up-link carrier number that the PHICH mapping relations are arranged with this descending carrier, the PHICH channel of the corresponding subset of each up-link carrier;

Between different subsets or fully non-intersect (namely not having shared PHICH channel), perhaps part intersects (the PHICH channel that namely exists a part to share), perhaps intersects fully (namely the PHICH channel of two subsets is identical); Can comprise at least one group of PHICH channel in each PHICH channel subset, for example PHICH channel subset can comprise the whole PHICH channels on descending carrier, and each up-link carrier is based on the PHICH channel in corresponding subset, utilize the minimum label of the numerical value of the n-DMRS after expanding and the PRB that the transmitting uplink data piece takies according to LTE, or aforesaid way one, or mode two, or mode three, or the PHICH channel indexes computational methods described in embodiment three are determined the corresponding PHICH channel indexes of current data transmission block.

Even single descending carrier exists the PHICH mapping related with a plurality of up-link carriers, be a plurality of PHICH channel subset with PHICH channel distribution all on descending carrier, and for all transmitting uplink data pieces in single up-link carrier are determined a PHICH channel subset, the PHICH channel bearing in each PHICH channel subset the response message of all transmitting uplink data pieces in single up-link carrier corresponding to described PHICH channel subset.

Below illustrated the method for several subset division:

Example one

As shown in Figure 5, when a LTE-A UE adopts the carrier wave configuration of 1 DL member carrier and 2 UL member carriers, to the schematic diagram of PHICH channel subset division; Have 4 groups of PHICH channels in figure, these 4 groups of PHICH channels are divided into 2 PHICH channel subset, fully non-intersect between 2, two PHICH channel subset of PHICH channel subset 1 and PHICH channel subset.The PHICH channel of each PHICH channel subset is replied corresponding to the ACK/NACK of the transmitting uplink data piece of a up-link carrier, to this up-link carrier, in the PHICH range of channels that its respective subset comprises, utilize the minimum label index of the numerical value of the n-DMRS after expanding and the Resource Block that the transmitting uplink data piece takies according to LTE or aforesaid way one, or mode two, or mode three, or the PHICH channel calculation method described in embodiment three is determined the corresponding PHICH channel indexes of this up-link carrier current data transmission block.

Example two

The corresponding PHICH channel subset of each up-link carrier, the PHICH channel indexes in this PHICH subset resource are that the even number PRB mapping by this up-link carrier obtains, and concrete can adopt following formula signal:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=((I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+\left(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}\mathrm{mod}2\right))/2+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, (n _PHICH ^Group, n _PHICH ^seq) or (n _PHICH ^seq, n _PHICH ^Group) be the PHICH channel indexes, n _PHICH ^GroupBe index group number parameter, n _PHICH ^seqBe index sequence number parameter, N _SF ^PHICHBe spreading factor, I _{PRB_RA} ^Lowest_indexThe minimum label index of shared PRB when being the transmission of transmitting uplink data piece, n _DMRSBe the numerical value of the n-DMRS after expansion, N _PHICH ^GroupIt is the PHICH channel group number that PHICH channel subset corresponding to this up-link carrier comprises.I _PHICHBe set to 1 during the transmit ascending data piece in 0 and the 5th or the 10th subframe of ascending-descending subframes configuration of TDD system, be set to 0 in other situation.

The perhaps PHICH channel of each up-link carrier to reserving on the descending carrier that should up-link carrier be associated, the PHICH channel indexes sequence number in this PHICH channel can adopt following formula signal:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=\left((I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+\left(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}\mathrm{mod}2\right)\right){+n}_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, N _PHICH ^GroupBe with descending carrier that this up-link carrier is associated on the group number of the PHICH channel reserved, other parameter-definitions are with top described identical.

Namely be based upon the PHICH channel subset that in single up-link carrier, all transmitting uplink data pieces are determined, and utilize the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of described current transmitting uplink data piece.

In this example, if comprised the ascending physical signal Resource Block PRB index of even number during transmission current data transmission block, according to first even number PRB index, utilize the corresponding PHICH channel indexes of numerical computations current data transmission block of this first even number PRB index and the rear n-DMRS of expansion in PHICH channel subset corresponding to up-link carrier; If only comprise the PRB index of odd number during transmission current data transmission block, utilize the numerical value of the even number PRB index adjacent with the PRB index of this odd number and the rear n-DMRS of expansion in subset corresponding to up-link carrier, calculate the corresponding PHICH channel indexes of current data transmission block.

Example three

When a descending carrier provided the PHICH channel for a plurality of up-link carriers, to the paired up-link carrier that is associated with this descending carrier, its corresponding PHICH channel subset was included in all the PHICH channels on this descending carrier;

To non-paired up-link carrier, the PHICH channel subset of determining for all transmitting uplink data pieces in described non-paired up-link carrier comprises the whole PHICH channels on described descending carrier, perhaps, the PHICH channel subset of determining for all transmitting uplink data pieces in described non-paired up-link carrier comprises the part PHICH channel on described descending carrier.For example, all PHICH channel distribution are become a plurality of PHICH channel subset, the number of PHICH channel subset equals the number of non-paired carrier wave, and each non-paired up-link carrier is corresponding to a subset, and fully non-intersect between each subset.

No matter be paired up-link carrier or non-paired up-link carrier, in the PHICH range of channels that its respective subset comprises, UE can utilize the minimum label of the numerical value of the n-DMRS after expansion and the Resource Block that the transmitting uplink data piece takies according to LTE, or aforesaid way one, or mode two, or mode three, or the PHICH method for channel allocation described in embodiment three is determined the corresponding PHICH channel indexes of this up-link carrier current data transmission block.

The said method that provides based on the embodiment of the present invention, independently PHICH channel subset can be divided for different up-link carriers in the base station, when the corresponding PHICH channel indexes of data transmission block on single up-link carrier is being determined in the base station, only need to definite PHICH channel indexes get final product in the PHICH channel subset scope of dividing for this up-link carrier, be the complexity that the data transmission block of the different up-link carriers of UE is determined the PHICH channel thereby reduced base station dispatcher.

The technical scheme of the embodiment of the present invention, PHICH resource division on single (or a plurality of) descending carrier is become a plurality of subsets, every subset is replied corresponding to the ACK/NACK of the transmitting uplink data piece of a up-link carrier, the PHICH channel mapping of so different up-link carriers only carries out in the subset of this up-link carrier, is conducive to base station dispatcher the PHICH channel of the data transmission block of each up-link carrier is carried out separate configurations.

Be appreciated that, technical scheme in the various embodiments described above also can make up realization as required, for example, in the scene of compatible LTE system and LTE-A system, after can first the PHICH channel being divided into some subsets, the ACK/NACK of the data transmission block of each up-link carrier replys corresponding to a PHICH channel subset resource, then, utilize sign under different distribution methods, in the PHICH of this up-link carrier channel subset, the data transmission block of this up-link carrier is carried out the distribution of PHICH channel according to the PHICH channel mapping rule under this distribution method.

The technical scheme of the embodiment of the present invention is utilized the combined coding of extended field and n-DMRS field, has expanded the numerical value span of n-DMRS; Utilize the n-DMRS value after expansion, when the minimum label index of the Resource Block that takies at the transmitting uplink data piece was determined, the base station can enlarge the scope of distribution PHICH channel.The technical scheme of the embodiment of the present invention has reduced can't be the probability of transmitting uplink data piece configuration PHICH channel, has improved the utilization ratio of PHICH channel resource, has satisfied different scenes and has used lower user's demand.

Another embodiment of the present invention also provides a kind of method that receives physical mixing retransmission indicating chanel information, and described method comprises:

Step S1: the value of the n-DMRS after determining to expand according to the associating field in Physical Downlink Control Channel, described associating field is generated by the field n-DMRS field of extended field and indication demodulated reference signal cyclic shift value;

Step S2: utilize the corresponding PHICH channel indexes of numerical computations current data transmission block of minimum label index and the n-DMRS after expansion of the shared Physical Resource Block PRB of current data transmission block, and determine the corresponding PHICH channel of current data transmission block according to this PHICH channel indexes;

Step S3: carry out ACK/NACK and detect on described definite PHICH channel, to know that network is to the response feedback information of current data transmission block.

Above-mentioned steps S1 to S3 can be realized by the receiving equipment of terminal (as UE) side.Be the correct reception of guarantee information, the value of end side and the network side n-DMRS after expansion, the computational methods of PHICH channel indexes, the aspects such as division of subset need to be consistent.Thereby terminal can get network side to the response feedback of current data transmission in the PHICH channel of determining, when this is fed back to ACK information, the success of current data transport block transmission is described, need not retransmit.When this is fed back to nack message, the failure of current data transport block transmission is described, if the transmission of current data transmission block does not reach the maximum retransmission that system arranges, terminal retransmits this data transmission block.

The technical scheme of the embodiment of the present invention is utilized the combined coding of extended field and n-DMRS field, has expanded the numerical value span of n-DMRS; Utilize the n-DMRS value after expansion, when the minimum label index of the Resource Block that takies at the transmitting uplink data piece was determined, the base station can enlarge the scope of distribution PHICH channel.The technical scheme of the embodiment of the present invention has reduced can't be the probability of transmitting uplink data piece configuration PHICH channel, has improved the utilization ratio of PHICH channel resource, has satisfied different scenes and has used lower user's demand.

The present invention another embodiment also provide a kind of network equipment, and as shown in Figure 6, described equipment comprises:

Expansion n-DMRS determining unit 61 is used for according to the extended field of Physical Downlink Control Channel and the associating field of n-DMRS field generation, and the n-DMRS value after determining to expand according to described associating field;

Channel indexes computing unit 62 is for the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of the n-DMRS after the minimum label index that utilizes the shared Physical Resource Block PRB of current transmitting uplink data piece and expansion;

Allocation units 63 are used for determining according to described PHICH channel indexes the PHICH channel that current transmitting uplink data piece is corresponding.

Further, the corresponding PHICH channel indexes of described current transmitting uplink data piece comprises index group number parameter and index sequence number parameter, and described channel indexes computing unit 62 comprises module and the first computing module 621 are set,

The described module that arranges is used for according to the numerical value of the n-DMRS after expansion, offset parameter being set;

Described the first computing module 621 is used for utilizing at least one of index sequence number parameter of the index group number parameter of numerical computations current data transmission block of the minimum label index of the PRB that described offset parameter, current transmitting uplink data piece take and the n-DMRS after expansion and current data transmission block.

Further, as shown in Figure 7, the described network equipment comprises that also control unit 64 and described channel indexes computing unit 62 also comprise the second computing module 622,

Described control unit 64, be used for to be used for the sign that arranges according to the extended field that comprises at Physical Downlink Control Channel or high-level signaling, indicate the computational methods of at least two kinds of PHICH channel indexes, described computational methods comprise the first computational methods and the second computational methods; When described the first computational methods of described sign indication, at least one in the index group number parameter of the minimum label index of PRB that the first computing module 621 that described control unit 64 is controlled described channel indexes computing unit utilizes described offset parameter, current transmitting uplink data piece to take and the numerical computations current data transmission block of the n-DMRS after expansion and the index sequence number parameter of current data transmission block;

When described the second computational methods of described sign indication, the second computing module 622 that described control unit 64 is controlled described channel indexes computing unit obtains the corresponding PHICH channel indexes of current transmitting uplink data piece according to following formula:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, n _PHICH ^GroupBe index group number parameter, n _PHICH ^seqBe index sequence number parameter, N _SF ^PHICHBe spreading factor, I _{PRB_RA} ^Lowest_indexThe minimum label index of the shared Physical Resource Block PRB of transmitting uplink data piece, n _DMRSBe the numerical value of the n-DMRS after expansion, N _PHICH ^GroupThat system is the PHICH channel group number of the up-link carrier setting of transmission current data block.I _PHICHBe set to 1 during the transmit ascending data piece in 0 and the 5th or the 10th subframe of ascending-descending subframes configuration of TDD system, be set to 0 in other situation.

Further, the described network equipment also comprises:

The resource division unit, be used for when single descending carrier and a plurality of up-link carriers exist the PHICH mapping related, be a plurality of PHICH channel subset with PHICH channel distribution all on described descending carrier, and for all transmitting uplink data pieces in single up-link carrier are determined a PHICH channel subset, the PHICH channel bearing in each PHICH channel subset the response message of all transmitting uplink data pieces in single up-link carrier corresponding to described PHICH channel subset.

Between different subsets or fully non-intersect (namely not having shared PHICH resource), perhaps part intersects (the PHICH resource that namely exists a part to share), perhaps intersects fully (namely the PHICH resource of two subsets is identical).

Described channel indexes computing unit 62 is used for each up-link carrier, based on PHICH subset resource corresponding to this up-link carrier, utilizes the corresponding PHICH channel indexes of this up-link carrier current data transmission block of n-DMRS numerical computations after expanding.Perhaps,

Described channel indexes computing unit 62, concrete being used for when a descending carrier provides the PHICH channel for a plurality of up-link carriers, to the paired up-link carrier that is associated with this descending carrier, on PHICH channels all on this descending carrier, utilize the corresponding PHICH channel indexes of numerical computations current data transmission block of the minimum label index of PRB and the n-DMRS after expansion of described paired up-link carrier;

To non-paired up-link carrier, the corresponding PHICH channel subset of each non-paired up-link carrier, in PHICH channel subset corresponding to this non-paired up-link carrier, utilize the minimum label index of PRB of this non-paired up-link carrier and the corresponding PHICH channel indexes of numerical computations current data transmission block of the n-DMRS after expansion.

Further, described channel indexes computing unit 62, be used for according to following formula, utilize the index group number parameter of the current transmitting uplink data piece of numerical computations of the minimum label index of the shared PRB of described offset parameter, current transmitting uplink data piece and the n-DMRS after expansion, and, utilize the index sequence number parameter of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=[(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+\mathrm{offset}]\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Perhaps,

Described channel indexes computing unit 62, be used for according to following formula, utilize the index sequence number parameter of the current transmitting uplink data piece of numerical computations of the minimum label index of the shared PRB of described offset parameter, current transmitting uplink data piece and the n-DMRS after expansion, and, utilize the index group number parameter of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, n _PHICHBe PHICH channel indexes, n _PHICH ^GroupBe index group number parameter, n _PHICH ^seqBe index sequence number parameter, N _SF ^PHICHBe spreading factor, I _{PRB_RA} ^Lowest_indexThe minimum label index of shared Physical Resource Block PRB when being the transmission of transmitting uplink data piece, n _DMRSBe the numerical value of n-DMRS, N _PHICH ^GroupThat system is the PHICH channel group number of the up-link carrier setting of transmission current data block., offset is offset parameter, I _PHICHBe set to 1 during the transmit ascending data piece in 0 and the 5th or the 10th subframe of ascending-descending subframes configuration of TDD system, be set to 0 in other situation.

Perhaps, described channel indexes computing unit 62 is used for utilizing the index group number parameter of numerical computations current data transmission block of the minimum label index of described offset parameter, PRB and the n-DMRS after expansion and the index sequence number parameter of current data transmission block:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=((I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+\mathrm{offset})\mathrm{mod}/{\mathrm{NUM}}_{\mathrm{PRB}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein, n _PHICHBe PHICH channel indexes, n _PHICH ^GroupBe index group number parameter, n _PHICH ^seqBe index sequence number parameter, N _SF ^PHICHBe spreading factor, I _{PRB_RA} ^Lowest_indexThe minimum label index of shared PRB when being the transmission of transmitting uplink data piece, n _DMRSBe the numerical value of n-DMRS, N _PHICH ^GroupThat system is the PHICH channel group number of the up-link carrier setting of transmission current data block., NUM _PRBBe the total number of PRB index, offset is offset parameter.

In apparatus of the present invention embodiment, the specific works mode of each functional module and unit is referring to the inventive method embodiment.In apparatus of the present invention embodiment, each functional module and unit can be realized separately, also can be integrated in one or more unit and realize.

The technical scheme of the embodiment of the present invention is utilized the combined coding of extended field and n-DMRS field, has expanded the numerical value span of n-DMRS; Utilize the n-DMRS value after expansion, when the minimum label index of the Resource Block that takies at the transmitting uplink data piece was determined, the base station can enlarge the scope of distribution PHICH channel.The technical scheme of the embodiment of the present invention has reduced can't be the probability of transmitting uplink data piece configuration PHICH channel, has improved the utilization ratio of PHICH channel resource, has satisfied different scenes and has used lower user's demand.

The present invention another embodiment also provide a kind of receiving equipment, and as shown in Figure 8, described equipment comprises:

Expansion n-DMRS determining unit 81, the value of the n-DMRS after being used for determining to expand according to the associating field of Physical Downlink Control Channel, described associating field is generated by the field n-DMRS field of extended field and indication demodulated reference signal cyclic shift value;

Computing unit 82, for the corresponding PHICH channel indexes of numerical computations current data transmission block of the n-DMRS after the minimum label index that utilizes the shared Physical Resource Block PRB of current data transmission block and expansion, and determine the corresponding PHICH channel of current data transmission block according to this PHICH channel indexes;

Detect performance element 83, carry out ACK/NACK and detect on described definite PHICH channel, to know that network is to the response feedback information of current data transmission block.

Further, described computing unit 82, also specifically be used for when single descending carrier when a plurality of up-link carriers exist the PHICH mapping related, PHICH resources all on this descending carrier are divided into a plurality of subsets, and the subset resource of each PHICH channel is replied corresponding to the ACK/NACK of each up-link carrier data transmission block.To each up-link carrier, the numerical value of n-DMRS after utilizing the minimum label index of the shared PRB of this up-link carrier current data transmission block and expanding, on the corresponding PHICH subset of this up-link carrier resource, calculate the corresponding PHICH channel indexes of current data transmission block.

In apparatus of the present invention embodiment, the specific works mode of each functional module and unit is referring to the inventive method embodiment.In apparatus of the present invention embodiment, each functional module and unit can be realized separately, also can be integrated in one or more unit and realize.

The present invention another embodiment also provide a kind of communication system, and this system comprises the above-mentioned network equipment.Perhaps, described system comprises the above-mentioned network equipment and receiving equipment.

The technical scheme of the embodiment of the present invention, utilize the combined coding of extended field and n-DMRS field, enlarged the span of the numerical value of n-DMRS, thereby enlarged the scope of utilizing the PHICH channel indexes to distribute the PHICH channel, reduced and to be the probability of respective data transfer piece configuration PHICH channel, improved the utilization ratio of PHICH resource, satisfied different scenes and used lower user's demand.

Those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can software product form embody, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (13)

1. the distribution method of a physical mixing retransmission indicating chanel (PHICH), is characterized in that, described method comprises:

Generate the associating field according to the field (n-DMRS) of the extended field in Physical Downlink Control Channel and indication demodulated reference signal cyclic shift value, and the value of the n-DMRS after determining to expand according to described associating field;

Utilize the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared Physical Resource Block (PRB) of current transmitting uplink data piece;

Determine PHICH channel corresponding to described current transmitting uplink data piece according to described PHICH channel indexes;

Wherein, obtain in the following way described extended field:

Increase the field with predetermined bit, as described extended field; And/or,

With the indication of the carrier wave in Physical Downlink Control Channel (CI) field, as described extended field.

2. method according to claim 1, it is characterized in that, if single descending carrier exists the PHICH mapping related with a plurality of up-link carriers, be a plurality of PHICH channel subset with PHICH channel distribution all on described descending carrier, and before the value of the n-DMRS after determining expansion according to described associating field, also comprise:

For all transmitting uplink data pieces in single up-link carrier are determined a PHICH channel subset, the PHICH channel bearing in each PHICH channel subset the response message of all transmitting uplink data pieces in single up-link carrier corresponding to described PHICH channel subset;

And the described minimum label index of the shared PRB of current transmitting uplink data piece and the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of the n-DMRS after expansion utilized comprises:

Be based upon the PHICH channel subset that in single up-link carrier, all transmitting uplink data pieces are determined, and utilize the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of described current transmitting uplink data piece.

3. method according to claim 2, is characterized in that, described a plurality of PHICH channel subset are fully non-intersect, and perhaps, described a plurality of PHICH channel subset partly intersect, and perhaps, described a plurality of PHICH channel subset are fully crossing.

4. method according to claim 2, is characterized in that, described is that in single up-link carrier, all transmitting uplink data pieces determine that a PHICH channel subset comprises:

For the paired up-link carrier that is associated with described descending carrier, the PHICH channel subset of determining for all transmitting uplink data pieces in described paired up-link carrier comprises the whole PHICH channels on described descending carrier;

For the non-paired up-link carrier that is associated with described descending carrier, the PHICH channel subset of determining for all transmitting uplink data pieces in described non-paired up-link carrier comprises the whole PHICH channels on described descending carrier, perhaps, the PHICH channel subset of determining for all transmitting uplink data pieces in described non-paired up-link carrier comprises the part PHICH channel on described descending carrier.

5. method according to claim 1 and 2, it is characterized in that, before the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of the n-DMRS after the described minimum label index that utilizes the shared PRB of current transmitting uplink data piece and expansion, also comprise:

Numerical value according to the n-DMRS after expansion, offset parameter is set, so that when the minimum label index of the shared PRB of transmitting uplink data piece is determined, the PHICH channel indexes of the transmitting uplink data piece that goes out according to the numerical computations of the n-DMRS after the minimum label index of described offset parameter, PRB and different expansion is not identical;

The described corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of utilizing minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece comprises:

The corresponding PHICH channel indexes of described current transmitting uplink data piece comprises index group number parameter and index sequence number parameter, and at least one in described index group number parameter and index sequence number parameter utilizes the minimum label index of the shared PRB of described offset parameter, current transmitting uplink data piece and the numerical computations of the n-DMRS after expansion to obtain.

6. method according to claim 5, is characterized in that,

According to following formula, utilize the index group number parameter of the current transmitting uplink data piece of numerical computations of the minimum label index of the shared PRB of described offset parameter, current transmitting uplink data piece and the n-DMRS after expansion, and, utilize the index sequence number parameter of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=[(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+\mathrm{offset}]\text{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Perhaps, according to following formula, utilize the index sequence number parameter of the current transmitting uplink data piece of numerical computations of the minimum label index of the shared PRB of described offset parameter, current transmitting uplink data piece and the n-DMRS after expansion, and, utilize the index group number parameter of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Perhaps, according to following formula, utilize the index group number parameter of the current transmitting uplink data piece of numerical computations of the minimum label index of the shared PRB of described offset parameter, current transmitting uplink data piece and the n-DMRS after expansion and the index sequence number parameter of current transmitting uplink data piece:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=((I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+\mathrm{offset})\mathrm{mod}{\mathrm{NUM}}_{\mathrm{PRB}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein,

Be index group number parameter, Be index sequence number parameter, Be spreading factor,

The minimum label index of the shared PRB of transmitting uplink data piece, n _DMRSBe the numerical value of the n-DMRS after expansion, Be the PHICH group number that the descending carrier that is associated with current up-link carrier is reserved for this up-link carrier, offset is offset parameter, NUM _PRBThe number of all PRB that comprise for the up-link carrier of transmission current data transmission block, I _PHICHBe set to 1 during the transmit ascending data piece in 0 and the 5th or the 10th subframe of ascending-descending subframes configuration of TDD system, be set to 0 in other situation.

7. method according to claim 5, is characterized in that, the described offset parameter that arranges is specially:

When the value of n-DMRS after expansion be from 0 to A-1 the time, the numerical value of the n-DMRS after expansion is divided into the Q section, the offset parameter of correspondence is set for the n-DMRS value after every section expansion;

Wherein, offset parameter corresponding to the n-DMRS value after every section expansion is identical, perhaps, and offset parameter difference corresponding to n-DMRS value after every section expansion; Q=ceil (A/B), the total number of the n-DMRS after A represents to expand, B represents the maximum PHICH channel number that can comprise in each PHICH group, function ceil() represent to round up.

8. method according to claim 5, is characterized in that, described method also comprises:

In extended field that Physical Downlink Control Channel comprises or high-rise configuration signal, sign is set, described sign is in order to the computational methods of at least two kinds of PHICH channel indexes of indication, and described computational methods comprise the first computational methods and the second computational methods at least;

When described the first computational methods of described sign indication, the described corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of utilizing minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece comprises:

The corresponding PHICH channel indexes of described current transmitting uplink data piece comprises index group number parameter and index sequence number parameter, and at least one in described index group number parameter and index sequence number parameter utilizes the minimum label index of the shared PRB of described offset parameter, current transmitting uplink data piece and the numerical computations of the n-DMRS after expansion to obtain;

When described the second computational methods of described sign indication, the described corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of utilizing minimum label index and the n-DMRS after expansion of the shared PRB of current transmitting uplink data piece comprises:

Calculate the corresponding PHICH channel indexes of current transmitting uplink data piece according to following formula:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein,

Be index group number parameter, Be index sequence number parameter,

Be spreading factor,

The minimum label index of the shared PRB of current transmitting uplink data piece, n _DMRSBe the numerical value of the n-DMRS after expansion,

The PHICH group number that the descending carrier that is associated with current up-link carrier is reserved for this up-link carrier, I _PHICHBe set to 1 during the transmit ascending data transmission block in 0 and the 5th or the 10th subframe of ascending-descending subframes configuration of TDD system, be set to 0 in other situation.

9. a network equipment, is characterized in that, described equipment comprises:

Expansion n-DMRS determining unit generates the associating field for the extended field according to Physical Downlink Control Channel with the field (n-DMRS) of indicating the demodulated reference signal cyclic shift value, and the n-DMRS value after determining to expand according to described associating field;

The channel indexes computing unit is used for utilizing the minimum label index of the shared Physical Resource Block (PRB) of current transmitting uplink data piece and the numerical computations corresponding physical mixing retransmission indicating chanel of current transmitting uplink data piece (PHICH) index of the n-DMRS after described expansion;

Allocation units are determined the PHICH channel of current transmitting uplink data piece according to described PHICH channel indexes;

Wherein, obtain in the following way described extended field:

Increase the field with predetermined bit, as described extended field; And/or,

With the indication of the carrier wave in Physical Downlink Control Channel (CI) field, as described extended field.

10. the network equipment according to claim 9, is characterized in that, the described network equipment also comprises:

The resource division unit, be used for when single descending carrier and a plurality of up-link carriers exist the PHICH mapping related, be a plurality of PHICH channel subset with PHICH channel distribution all on described descending carrier, and for all transmitting uplink data pieces in single up-link carrier are determined a PHICH channel subset, the PHICH channel bearing in each PHICH channel subset the response message of all transmitting uplink data pieces in single up-link carrier corresponding to described PHICH channel subset;

Described channel indexes computing unit, concrete being used for when single descending carrier and a plurality of up-link carriers exist the PHICH mapping related, be based upon the PHICH channel subset that in single up-link carrier, all transmitting uplink data pieces are determined, and utilize the corresponding PHICH channel indexes of the current transmitting uplink data piece of numerical computations of minimum label index and the n-DMRS after expansion of the shared PRB of described current transmitting uplink data piece.

11. the network equipment according to claim 10 is characterized in that, described a plurality of PHICH channel subset that described resource division dividing elements obtains are fully non-intersect, perhaps, described a plurality of PHICH channel subset partly intersects, and perhaps, described a plurality of PHICH channel subset are fully crossing.

12. the according to claim 9 or 10 described network equipments, it is characterized in that, the corresponding PHICH channel indexes of described current transmitting uplink data piece comprises index group number parameter and index sequence number parameter, and described channel indexes computing unit comprises module and the first computing module are set

The described module that arranges is used for according to the numerical value of the n-DMRS after expansion, offset parameter being set;

Described the first computing module, at least one of the index group number parameter of the minimum label index of PRB that is used for utilizing described offset parameter, current transmitting uplink data piece to take and the numerical computations current data transmission block of the n-DMRS after expansion and the index sequence number parameter of current data transmission block.

13. the network equipment according to claim 12 is characterized in that, the described network equipment also comprises control unit, and described channel indexes computing unit also comprises the second computing module,

Described control unit, be used for the sign that arranges according to the extended field that comprises at Physical Downlink Control Channel or high-level signaling, indicate the computational methods of at least two kinds of PHICH channel indexes, described computational methods comprise the first computational methods and the second computational methods;

When described the first computational methods of described sign indication, at least one in the index group number parameter of the minimum label index of PRB that the first computing module of the described channel indexes computing unit of described control unit control utilizes described offset parameter, current transmitting uplink data piece to take and the numerical computations current data transmission block of the n-DMRS after expansion and the index sequence number parameter of current data transmission block;

When described the second computational methods of described sign indication, the second computing module that described control unit is controlled described channel indexes computing unit calculates the corresponding PHICH channel indexes of current transmitting uplink data piece according to following formula:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$

Wherein,

Be index group number parameter,

Be index sequence number parameter,

Be spreading factor,

The minimum label index of the shared PRB of transmitting uplink data piece, n _DMRSBe the numerical value of the n-DMRS after expansion,

The PHICH group number that the descending carrier that is associated with current up-link carrier is reserved for this up-link carrier, I _PHICHBe set to 1 during the transmit ascending data piece in 0 and the 5th or the 10th subframe of ascending-descending subframes configuration of TDD system, be set to 0 in other situation.

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