CN108024342A

CN108024342A - A kind of method and device for configuring demodulated reference signal

Info

Publication number: CN108024342A
Application number: CN201610962502.1A
Authority: CN
Inventors: 蒋创新; 弓宇宏; 梅猛; 陈艺戬; 张楠; 李儒岳; 鲁照华
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-11-04
Filing date: 2016-11-04
Publication date: 2018-05-11
Anticipated expiration: 2036-11-04
Also published as: WO2018082244A1; CN108024342B

Abstract

The invention discloses it is a kind of configure demodulated reference signal method and device, the described method includes：First communication node indicates the parameter used in demodulated reference signal by default signaling to the second communication node；Wherein, the parameter used in the demodulated reference signal includes at least one of：Species, time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port of the sequence of demodulated reference signal.

Description

A kind of method and device for configuring demodulated reference signal

Technical field

The present invention relates to wireless communication field, more particularly, to a kind of configuration demodulated reference signal in 5G Communication Studies direction Method and device.

Background technology

At present, newly eat dishes without rice or wine (NR, New Radio) physical-layer techniques just in third generation partner program (3GPP, 3rd Generation Partnership Project) RAN1 intimately discuss in.And flexible and efficient is always NR physical layer designs institute The target of pursuit.And physical layer modulation reference signal pursues maximum flexibility and seems the trend of also becoming.It is this is because different The demand of application scenarios demodulated reference signal may be different.

Such as the user for high-speed mobile, in a time domain transmitting element, demodulated reference signal is close in time domain Degree should be higher, to meet the characteristic become soon on channel time domain caused by high doppler shift, and for low speed user, due to letter Change of the road in time domain is slower, then the demodulated reference signal in time domain can be than more loose.As shown in Figure 1, at one In the unit of domain, base station may be configured to 2 row reference signal of highspeed user, and be allocated to 1 row demodulated reference signal of low speed user.

Again for example, for the bigger user of angle spread, because channel is uneven on frequency domain, then then need base station Highdensity demodulated reference signal is configured on frequency domain to user, and if the channel of user is relatively flat on frequency domain, then Base station can give user's demodulated reference signal that low-density is configured on frequency domain.As shown in Fig. 2, left figure is high density solution on frequency domain Reference signal is adjusted, right figure is low-density demodulated reference signal on frequency domain.

For another example, if demodulated reference signal is placed on the front end of a time domain unit, demodulated equipment can be quick Demodulated reference signal is demodulated and then demodulating data, that is, accelerates data demodulation.But shadow may be brought for channel estimation Ring.And if demodulated reference signal is placed on the centre of a time domain unit, then the performance of channel estimation can be relatively good, still It is unfavorable for rapid data demodulation.As shown in figure 3, left figure is placed on the front end of transmitting element for demodulated reference signal, and right figure is It is placed on the centre of transmitting element.

In addition, in order to support the flexibility of scheduling, the scheduling mode of multiple minimum scheduling unit polymerizations can reduce scheduling Expense.If a minimum scheduling unit is a time slot, in order to reduce signaling consumption, and flexibility is pursued, once dispatched In, base station can distribute to the resource of one time slot of user or the resource of multiple time slots.As described in Figure 4, base station is once being dispatched In distribute to 1 one time slots of user, and distribute to the resource of 2 two time slots of user.

In addition, if base station is assigned with a time slot to user, and a time-domain symbol is only configured with a time slot Demodulated reference signal, then just multiple users cannot be distinguished with orthogonal mask (OCC) in time domain.And if base station is one The demodulated reference signal of 2 time-domain symbols is assigned with a time slot to user, then the OCC sequences that length is 2 can be at this Applied on the symbol of two demodulated reference signals, be similarly to Long Term Evolution (LTE, Long Term Evolution) R10 uplinks Demodulated reference signal.In once dispatching, the number of time slots distributed in time domain may dynamic change, and the demodulation of each time slot The time-domain symbol number of reference signal may also change, so the length of OCC cannot just determine in time domain.

In order to pursue the flexibility of maximum, if the time-frequency domain position of demodulated reference signal, density, time domain scheduling unit Length etc. all configures in physical layer control signaling, and the expense of control signaling is by the huge of change.

In addition, if if NR uses ZC sequences, a kind of method of multistage cascade is proposed.As shown in figure 5, demodulation reference Bandwidth used in signal is divided into multiple subbands, and a complete ZC sequence, i.e. ZC sequences are used for transmission on each subband Length be equal to the length of the subband.The benefit of the program is that the sequence of demodulated reference signal can be according to the resource-niche of distribution Put and obtain it, will not be changed according to the resource size of distribution.But further design is needed in terms of details to reach maximum The interference randomization of change and the signaling consumption of minimum.As described in LTE 36.211, what the root or root sequence of ZC sequences referred to It is exactly the u values or v values of uplink reference signals in LTE.

The content of the invention

In order to solve the above technical problems, an embodiment of the present invention provides a kind of method and dress for configuring demodulated reference signal Put.

The method of configuration demodulated reference signal provided in an embodiment of the present invention, including：

First communication node indicates the parameter used in demodulated reference signal by default signaling to the second communication node；Its In, the parameter used in the demodulated reference signal includes at least one of：The species of the sequence of demodulated reference signal, time domain position Put, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port.

Second communication node determines that demodulation reference is believed by receiving the default signaling sent from the first communication node Parameter used in number；Wherein, the parameter used in the demodulated reference signal includes at least one of：The sequence of demodulated reference signal Species, time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port of row.

The device of configuration demodulated reference signal provided in an embodiment of the present invention, applied to the first communication node, described device Including：

Indicating member, for indicating the parameter used in demodulated reference signal to the second communication node by default signaling； Wherein, the parameter used in the demodulated reference signal includes at least one of：Species, the time domain of the sequence of demodulated reference signal Position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port.

The device of configuration demodulated reference signal provided in an embodiment of the present invention, applied to the second communication node, described device Including：

Determination unit, for determining that demodulation reference is believed by receiving the default signaling sent from the first communication node Parameter used in number；Wherein, the parameter used in the demodulated reference signal includes at least one of：The sequence of demodulated reference signal Species, time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port of row.

In the technical solution of the embodiment of the present invention, the first communication node is indicated by default signaling to the second communication node Parameter used in demodulated reference signal；Wherein, the parameter used in the demodulated reference signal includes at least one of：Demodulation ginseng Examine the species of the sequence of signal, time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, of port Number.Using the technical solution of the embodiment of the present invention, the configuration of the instruction demodulated reference signal implied using other signalings is realized Parameter, saves the expense of signaling.In addition, for the method for multistage cascade, the root sequence on different sub-band, circulation is thought, schemes The change of sample can bring interference randomization.

Brief description of the drawings

Fig. 1 is the data structure schematic diagram one of the embodiment of the present invention；

Fig. 2 is the data structure schematic diagram two of the embodiment of the present invention；

Fig. 3 is the data structure schematic diagram three of the embodiment of the present invention；

Fig. 4 is the data structure schematic diagram four of the embodiment of the present invention；

Fig. 5 is the data structure schematic diagram five of the embodiment of the present invention；

Fig. 6 is the data structure schematic diagram six of the embodiment of the present invention；

Fig. 7 is the data structure schematic diagram seven of the embodiment of the present invention

Fig. 8 is the data structure schematic diagram eight of the embodiment of the present invention

Fig. 9 is the data structure schematic diagram nine of the embodiment of the present invention；

Figure 10 is the data structure schematic diagram ten of the embodiment of the present invention；

Figure 11 is the data structure schematic diagram 11 of the embodiment of the present invention

Figure 12 is the data structure schematic diagram 12 of the embodiment of the present invention；

Figure 13 is the data structure schematic diagram 13 of the embodiment of the present invention；

Figure 14 is the data structure schematic diagram 14 of the embodiment of the present invention；

Figure 15 is the data structure schematic diagram 15 of the embodiment of the present invention；

Figure 16 is the data structure schematic diagram 16 of the embodiment of the present invention；

Figure 17 is the flow diagram one of the method for the configuration demodulated reference signal of the embodiment of the present invention；

Figure 18 is the flow diagram two of the method for the configuration demodulated reference signal of the embodiment of the present invention；、

Figure 19 is the structure composition schematic diagram one of the device of the configuration demodulated reference signal of the embodiment of the present invention；

Figure 20 is the structure composition schematic diagram two of the device of the configuration demodulated reference signal of the embodiment of the present invention.

Embodiment

The characteristics of in order to more fully hereinafter understand the embodiment of the present invention and technology contents, below in conjunction with the accompanying drawings to this hair The realization of bright embodiment is described in detail, appended attached drawing purposes of discussion only for reference, is not used for limiting the embodiment of the present invention.

A time slot can refer to the minimum time unit once dispatched in the present invention, be made of multiple time-domain symbols, such as Multiple OFDM symbols.One time slot can also refer to a subframe.

In the technical solution of the embodiment of the present invention, with ack/nack confirm ACK/NACK feedback delay indication signaling come The other specifications such as the time-domain position or pattern of implicit instruction demodulated reference signal；With the time domain unit length of scheduling, frequency domain Length etc. come imply instruction demodulated reference signal density and/or pattern.By indicating demodulated reference signal port number Signaling instruction demodulated reference signal is continuous or discontinuous on frequency domain.First communication node by indicate with Next or multiple signalings indicate the orthogonal code length used in demodulated reference signal.The letter of domain scheduling symbol lengths during instruction Order, indicates the signaling of orthogonal code maximum length, indicates the signaling of the parameter of demodulated reference signal.For the ZC of multistage cascade Sequence method, the root sequence on different sub-band, cyclically shifted sequences, pattern can be different, and with time saltus step.Furthermore it is possible to Support the subband length of two kinds and the above.

The first communication node in the embodiment of the present invention refers to the equipment such as base station, cell, is also not excluded for other equipment certainly. And the second communication node generally refers to user terminal etc..

A kind of method for configuration demodulated reference signal that the embodiment of the present invention proposes, including：

First communication node indicates the parameter used in demodulated reference signal by default signaling to the second communication node.Institute Stating parameter used in demodulated reference signal includes the species of sequence of demodulated reference signal, time-domain position, pattern, and density is orthogonal Code length, root sequence, cyclically shifted sequences, one or more in the number of port.The signaling here preset at can be nothing Line resources control (RRC, Radio Resource Control) high-level signaling or predefined information, can be things Manage layer dynamic signaling.And the sequence of demodulated reference signal is generally referred to as PN sequences or ZC sequences.Time-domain position refers to solving As soon as reference signal is adjusted to be located in a time domain unit in which time-domain symbol, for example the left figure of Fig. 3 and right figure refer to different solutions Reference signal time domain is adjusted to put.And the density of demodulated reference signal is referred in a running time-frequency resource, such as a resource block How much of reference signal are for the length of orthogonal code in (RB, Resource Block), if OCC codes, length is 2, at this time Just include sequence [1 1] and [1-1], two users can be distinguished by OCC.And if the length of OCC codes is 4, then OCC Sequence just includes [1 11 1], [1-1 1-1], [1 1-1-1] and [1-1-1 1], can be used for distinguishing 4 users.Certainly, Orthogonal code can also be other codes, such as DFT codes, for example length is 3, including [1 1 1], [1exp (j*2*pi/3) exp (j*2*pi*2/3)], [1 exp (j*2*pi*2/3) exp (j*2*pi*4/3)], can utilize DFT orthogonal codes to be multiplexed 3 use Family.In the embodiment of the present invention, the orthogonal code length be 1 when, i.e., no orthogonal code, it is also assumed that length for 1 it is orthogonal Code sequence is [1].If the time-domain symbol of demodulated reference signal (DMRS, Demodulation Reference Signal) has 2 It is a, then can be done in the two time-domain symbols on the RE of same sub-carrier length be 2 it is orthogonal, as shown in fig. 6, user 1 The code in two different time-domain symbols is [1 1] on the same subcarrier, and that user 2 is [1-1].

First communication node is by indicating that ack/nack confirms that the signaling of ACK/NACK feedback delay is logical to second Believe the parameter used in node instruction demodulated reference signal.Since current flexible A/N feedback delay configuration is popular.Base station exists Time slot n dispatching downlink data, after k time slot, i.e., time slot n+k moment user can feed back to the base station data demodulation correctly with It is no.The value of k can be semi-statically configured or dynamic configuration.If the value of k is smaller, such as k=0, then A/N feeds back sum number According to scheduling meeting in a time slot, it is necessary to user's fast demodulation data, front end ratio of the demodulated reference signal positioned at a subframe at this time Preferably.And if user has the very sufficient time to remove demodulating data, i.e. k values are larger, then the position of demodulated reference signal can be put Between in a slot, be conducive to channel estimation.

When the default signaling is used to refer to demodulated reference signal pattern, also it is used to refer to used in demodulated reference signal The species of sequence.Send since ZC sequences are preferably continuous, or send at equal intervals, and interval had better not be too big.If Base station is excessive to the DMRS pattern frequency domain intervals of user configuration, then sequence can write from memory the ZC sequences that admit a fault.

What other parameters can also imply indicates the sequence species of demodulated reference signal.For example distributed with frequency domain resource Signaling carry out the length of implicit instruction ZC sequences.The different sequence of different frequency domain resource method of salary distribution instructions, such as if Base station is that frequency domain is continuous using the resource that certain resource distribution mode distributes to user, or is divided into multistage on frequency domain, every section It is continuous, then the corresponding sequence of this resource distribution mode is exactly ZC sequences.And if resource distribution mode is discrete, So corresponding is exactly PN sequences.Or the length distributed according to frequency domain resource is to determine whether be ZC sequences.

When the default signaling is used to refer to demodulated reference signal port number, also it is used to refer to demodulated reference signal and exists Transmission on frequency domain is continuous or discrete.In other words, whether demodulated reference signal continuously transmits also on frequency domain It is that discrete transmission has relation with the number of plies of DMRS port number or data.

When the default signaling is used to refer to the demodulated reference signal pattern or density, demodulation ginseng is also used to refer to Examine the orthogonal code length used in signal.

First communication node is indicated used in demodulated reference signal by indicating one or more following signaling Orthogonal code length.

The signaling of domain scheduling symbol lengths during instruction, indicates the signaling of orthogonal code maximum length, indicates demodulated reference signal The parameter signaling.

Or could also say that, when the default signaling is used to refer to the orthogonal code length used in demodulated reference signal, Also it is used to refer to the demodulated reference signal pattern or density.I.e. base station carries demodulated reference signal pattern with some signalings Information at the same time also carry demodulated reference signal orthogonal code length information.That is, the orthogonal code length used in DMRS There is relation with the pattern of demodulated reference signal, density, the length of time domain scheduling unit, length of orthogonal code maximum of configuration etc..

In NR, the pattern of DMRS is probably configurable, that is to say, that base station may give a variety of DMRS of user configuration Pattern, different DMRS patterns may have different time-frequency density, or take different running time-frequency resources.So length of orthogonal code Degree sets scope also the pattern of DMRS can be followed to have relation.Such as in a time slot, if only one row DMRS, then in time domain On orthogonal code length be exactly 1, i.e., different DMRS ports or user can not possibly be distinguished using orthogonal code in time domain.And If a time slot has two row DMRS, then the orthogonal code that length is 2 can be utilized in time domain.

Further, since a scheduling resource may include 1 or multiple time slots in NR, wrapped in the unit once dispatched The DMRS columns contained is related with the number of time slots included in scheduling unit, and also the DMRS number with being included in a time slot is related System.So DMRS columns included in maximum no more than one scheduling unit of the length of usable orthogonal code in time domain.By Different in the speed of user, fireballing user is fast in the change of time domain upper signal channel, so what using time domain orthogonal code when included DMRS columns cannot be excessive, even if the scheduling unit that user is allocated is very long.So base station can be semi-static be allocated to user One maximum orthogonal code length, if the DMRS time domain symbolic numbers included in the scheduling unit of user's distribution are less than maximum orthogonality The length of code, then the orthogonal code length that the DMRS actually sent is used is exactly the DMRS symbolic numbers included in scheduling unit.And If the DMRS time domain symbolic numbers included in the scheduling unit of user's distribution are more than the length of maximum orthogonality code, then user just presses Send DMRS according to the maximum orthogonality code length of base station setting or receive DMRS.

When the default signaling is used to refer to the density and/or pattern of demodulated reference signal, scheduling money is also used to refer to Source.That is, the density of demodulated reference signal, and/or pattern have relation with distributing the signaling of resource, for example distribute resource Size includes time domain length, frequency domain length.For example if it is 1 that the time domain unit length distributed during user is once dispatched in base station Time slot, places the demodulated reference signal of more than one time-domain symbol preferably in this time slot at this time, is so conducive to receiving terminal estimation Doppler frequency shift and offset estimation.And if base station once dispatches user and distributes multiple time slots (slots), then some Slots is upper to place some reference signal time-domain symbols less.The method of salary distribution of scheduling of resource for another example, is such as on frequency domain It is discrete distribution or continuous dispensing also to have instruction to the pattern of DMRS.

First communication node is indicated used in demodulated reference signal by indicating one or more following signaling Pattern, density and/or sequence：Indicate the signaling of modulation coding scheme, indicate the signaling of transmission mode, retransmit signaling, Reception mode.In other words, the MCS signalings that user can configure according to base station, transmission mode signaling, such as open loop multiplexing, are closed Ring is multiplexed, and the transmission mode such as transmitting diversity is different, and whether data retransmit, and also has the reception mode difference of user to obtain DMRS's The information of some patterns or sequence.

First communication node by high-level signaling be allocated to a variety of demodulated reference signal parameters of the second communication node or Person is allocated to second communication node a portion figure by high-level signaling from predefined multiple demodulated reference signal patterns Sample.Also, first communication node notifies the parameter of the demodulated reference signal used in the second communication node by dynamic signaling Or pattern is which of high-level signaling.

Generally, in order to adapt to different application scenarios, demodulated reference signal can have an a variety of patterns, density, sequence, Orthogonal code length etc., the parameter of corresponding different demodulated reference signal.So system can predefine a big DMRS pattern Or parameter sets, this DMRS set can include all patterns, sequence, orthogonal code length etc..Since different users believes Road condition is different, so base station can select a DMRS subset by the way that high-level signaling is semi-static from this set, this It is suitable for the DMRS patterns of the user, and/or density, time-frequency domain position, and/or sequence in subset comprising some, and/or it is orthogonal Code length etc..In actual schedule, base station needs dynamically to tell user's DMRS parameters used in some scheduling unit Or pattern is which of subset of high-level signaling configuration.

The bandwidth sent for demodulated reference signal can be divided into several subbands.It is one complete on each subband Sequence.

The default signaling be used to refer to a son of the demodulated reference signal in a transmitting element take it is used During root sequence, different sub-band, and/or different transmitting element phase of the demodulated reference signal on identical transmitting element are also used to refer to With root sequence used on subband, and/or different transmitting element different sub-bands；

Wherein, the root sequence on different sub-band is similar and different；Root sequence in different transmitting element same sub-bands is different It is or identical.

The default signaling be used to refer to a son of the demodulated reference signal in a transmitting element take it is used During cyclically shifted sequences, different sub-band, and/or different transmission of the demodulated reference signal on identical transmitting element are also used to refer to Cyclically shifted sequences used in unit same sub-band, and/or different transmitting element different sub-bands；

Wherein, the order of the cyclically shifted sequences on different sub-band is similar and different；Wherein, the identical son of different transmitting elements The order for taking cyclically shifted sequences is similar and different.

The default signaling be used to refer to a son of the demodulated reference signal in a transmitting element take it is used During pattern sequence number, different sub-band, and/or different transmitting element of the demodulated reference signal on identical transmitting element are also used to refer to Pattern sequence number used in same sub-band, and/or different transmitting element different sub-bands；

Wherein, the pattern sequence number on different sub-band is similar and different；Wherein, the pattern in different transmitting element same sub-bands Sequence number is similar and different.

Generally, each subband is ZC sequences in this case.So base station can limit each user's distribution Minimum frequency domain resource is exactly 1 subband.So user can obtain corresponding DMRS sequences according to the resource subband position of distribution Row.

First communication node indicates that the second communication node is used for the band that demodulated reference signal is sent with the signaling It is wide that a variety of division methods are supported according to the difference of subband length.

If sub-band division is too small, then the characteristic of ZC sequences can be destroyed, and if subband is excessive, then minimum scheduling frequency Domain unit can only also distribute excessive resource to them with regard to excessive, for the user base station of some packet services, can so waste Resource.

The embodiment of the present invention is not limited to demodulated reference signal, such as the invention involved in embodiment 5 can also equally answer Use uplink detection reference signal.

The embodiment of the present invention does not limit uplink elaboration or downlink transfer equally.

The sequence of the embodiment of the present invention is not limited to ZC sequences and PN sequences yet.Especially for involved by embodiment 1 to 4 Content.

Figure 17 is the flow diagram one of the method for the configuration demodulated reference signal of the embodiment of the present invention, as shown in figure 17, The method of the configuration demodulated reference signal includes：

Step 1701：First communication node is indicated used in demodulated reference signal by default signaling to the second communication node Parameter；Wherein, the parameter used in the demodulated reference signal includes at least one of：The kind of the sequence of demodulated reference signal Class, time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port.

In the embodiment of the present invention, when first communication node is by indicating that ack/nack confirms that ACK/NACK is fed back Parameter of the signaling prolonged used in the second communication node instruction demodulated reference signal.

In the embodiment of the present invention, when the default signaling is used to refer to demodulated reference signal pattern, also it is used to refer to solve Adjust the species of the sequence used in reference signal.

In the embodiment of the present invention, when the default signaling is used to refer to demodulated reference signal port number, also it is used to refer to It is continuous or discrete to show transmission of the demodulated reference signal on frequency domain.

In the embodiment of the present invention, when the default signaling is used to refer to the demodulated reference signal pattern or density, Also it is used to refer to the orthogonal code length used in demodulated reference signal.

In the embodiment of the present invention, first communication node indicates demodulation ginseng by indicating following at least one signaling Examine the orthogonal code length used in signal：

The signaling of domain scheduling symbol lengths, the signaling for indicating orthogonal code maximum length, instruction demodulated reference signal during instruction The parameter signaling.

In the embodiment of the present invention, when the default signaling is used to refer to the density and/or pattern of demodulated reference signal, also It is used to refer to scheduling resource.

In the embodiment of the present invention, first communication node indicates demodulation ginseng by indicating following at least one signaling Examine pattern, density and/or the sequence used in signal：

Indicate the signaling of modulation coding scheme, the signaling for indicating transmission mode, retransmit signaling, reception mode.

In the embodiment of the present invention, first communication node indicates that the different demodulation of the second communication node is joined by signaling Density and/or the orthogonal code length for examining the corresponding demodulated reference signal of signal group are different；

Wherein, different demodulated reference signal groups corresponds to following at least one：Different resource groups, different demodulation references Signal port, different transmitted codewords, the different transmission numbers of plies.

In the embodiment of the present invention, first communication node is allocated to a variety of demodulation of the second communication node by high-level signaling Reference signal parameter；Alternatively, the second communication is allocated to from predefined multiple demodulated reference signal patterns by high-level signaling Node a portion pattern, also, first communication node notifies the solution used in the second communication node by dynamic signaling The parameter or pattern for adjusting reference signal are which of high-level signalings.

In the embodiment of the present invention, the bandwidth sent for demodulated reference signal can be divided into multiple subbands, wherein, each It is a complete sequence on subband.

In the embodiment of the present invention, the default signaling is used to refer to one of demodulated reference signal in a transmitting element On height band during root sequence used, be also used to refer to different sub-band of the demodulated reference signal on identical transmitting element, and/or Root sequence used in different transmitting element same sub-bands, and/or different transmitting element different sub-bands；

In the embodiment of the present invention, the default signaling is used to refer to one of demodulated reference signal in a transmitting element On height band during cyclically shifted sequences used, difference of the demodulated reference signal on identical transmitting element is also used to refer to Cyclically shifted sequences used in band, and/or different transmitting element same sub-bands, and/or different transmitting element different sub-bands；

In the embodiment of the present invention, the default signaling is used to refer to one of demodulated reference signal in a transmitting element On height band during pattern sequence number used, be also used to refer to different sub-band of the demodulated reference signal on identical transmitting element and/ Or the pattern sequence number used on different transmitting element same sub-bands, and/or different transmitting element different sub-bands；

In the embodiment of the present invention, first communication node indicates that the second communication node is used to demodulate with the signaling joins The bandwidth for examining signal transmission supports a variety of division methods according to the difference of subband length.

Figure 18 is the flow diagram two of the method for the configuration demodulated reference signal of the embodiment of the present invention, as shown in figure 18, The method of the configuration demodulated reference signal includes：

Step 1801：Second communication node determines solution by receiving the default signaling sent from the first communication node Adjust the parameter used in reference signal；Wherein, the parameter used in the demodulated reference signal includes at least one of：Demodulation reference The species of the sequence of signal, time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, of port Number.

In the embodiment of the present invention, second communication node by from the first communication node be used for indicate certainly/ The signaling of negative confirmation ACK/NACK feedback delay determines the parameter of the demodulated reference signal.

In the embodiment of the present invention, second communication node by from the first communication node be used for indicate demodulation reference The signaling of signal pattern determines the species of the sequence used in the demodulated reference signal.

In the embodiment of the present invention, second communication node by from the first communication node be used for indicate demodulation reference The signaling of signal port number determines that the demodulated reference signal is continuous or discontinuous transmission on frequency domain.

In the embodiment of the present invention, second communication node by from the first communication node be used for indicate demodulation reference The signaling of signal pattern and/or density determines the orthogonal code length used in the demodulated reference signal；Alternatively,

Second communication node from the first communication node by being used to indicate used in the demodulated reference signal The signaling of orthogonal code length determines demodulated reference signal pattern and/or density.

In the embodiment of the present invention, second communication node passes through following at least one finger from the first communication node Show signaling to determine the orthogonal code length used in demodulated reference signal：

In the embodiment of the present invention, second communication node by from the first communication node be used for indicate scheduling resource Signaling determine the density of the demodulated reference signal and/or pattern.

In the embodiment of the present invention, second communication node passes through following at least one signaling from the first communication node To determine the density of the demodulated reference signal and/or pattern：

In the embodiment of the present invention, the signaling that second communication node receives the first communication node indicates different demodulation The density and/or orthogonal code length of the corresponding demodulated reference signal of reference signal group are different；

In the embodiment of the present invention, second communication node receives what first communication node was configured by high-level signaling A variety of demodulated reference signal parameters；Or is allocated to from predefined multiple demodulated reference signal patterns by high-level signaling Two communication node a portion patterns, also, second communication node passes through the dynamic signaling from the first communication node Learn that the parameter of demodulated reference signal or pattern are which of high-level signalings.

In the embodiment of the present invention, the bandwidth partition sent for demodulated reference signal into several subbands, wherein, per height It is a complete sequence to take.

In the embodiment of the present invention, second communication node indicates demodulation reference by being used for from the first communication node A son of the signal in a receiving unit takes the signaling of root sequence used, to determine that demodulated reference signal connects identical Receive used on the different sub-band, and/or different receiving unit same sub-bands, and/or different receiving unit different sub-bands on unit Root sequence；

Wherein, the root sequence on different sub-band is similar and different；Wherein, the root sequence in different receiving unit same sub-bands It is similar and different.

In the embodiment of the present invention, second communication node indicates demodulation reference by being used for from the first communication node A son of the signal in a receiving unit takes the signaling of cyclically shifted sequences used, to determine that demodulated reference signal exists Different sub-band, and/or different receiving unit same sub-bands, and/or different receiving unit different sub-bands on identical receiving unit Upper cyclically shifted sequences used；

Wherein, the order of the cyclically shifted sequences on different sub-band is similar and different；Wherein, the identical son of different receiving units The order of the cyclically shifted sequences taken is similar and different.

In the embodiment of the present invention, second communication node indicates demodulation reference by being used for from the first communication node A son of the signal in a receiving unit takes the signaling of pattern sequence number used, to determine demodulated reference signal identical Institute on different sub-band, and/or different receiving unit same sub-bands, and/or different receiving unit different sub-bands on receiving unit Pattern sequence number；

Wherein, the pattern sequence number on different sub-band is similar and different；Wherein, the pattern in different receiving unit same sub-bands Sequence number is similar and different.

In the embodiment of the present invention, second communication node is determined according to the indication signaling from the first communication node Used sub-band division method.

Done further in detail with reference to the method for configuration demodulated reference signal of the concrete application scene to the embodiment of the present invention Thin description.

Embodiment 1

First communication node is by indicating that the signaling of A/N feedback delay indicates demodulation reference to the second communication node Parameter used in signal, including pattern, density, time-domain position, frequency domain position etc..Since current flexible A/N feedback delay is matched somebody with somebody Put and be popular.Base station is in time slot #n dispatching downlink data, and after k time slot, i.e. time slot #n+k moment user can feed back to base Stand the data demodulation correctness.The value of k can be semi-statically configured or dynamic configuration.If the value of k is smaller, such as k =0, then A/N feed back and data scheduling meeting in a time slot, it is necessary to user's fast demodulation data, demodulated reference signal position at this time It is relatively good in the front end of a subframe.And if user has the very sufficient time to remove demodulating data, i.e. k values are larger, then demodulation ginseng Examining the position of signal can be placed among time slot, be conducive to channel estimation.

That is, time-domain position of the value of k with demodulated reference signal, pattern etc. have relation.

As shown in fig. 7, at the time slot #n moment, if the transmission of base station scheduling current time slots, and base station would be controlled in physical layer The value of dynamic configuration configuration k in channel, if the value of k is equal to 0, demodulated reference signal will be sent in the front end of time slot, no Then demodulated reference signal in a slot between send.Certainly, the value of k can be that high-level signaling is semi-statically configured.

Base station can set a k_throushold, if the value of k is less than k_throushold, demodulated reference signal In time slot front end, otherwise in a slot between some position.The k_throushold values of different user can be different, quiet by half The high-level signaling configuration of state.

The parameters such as the time-domain position of reference signal, pattern are inferred by the value of k, signaling consumption can be saved, without losing Flexibility.

It is worth noting that, the embodiment of the present invention indicates DMRS patterns or time-domain position using k values, can combine aobvious The signaling of formula or other implicit signalings indicate the parameters such as DMRS patterns.For example a user configuration has multiple DMRS to scheme DMRS patterns, can be divided into multiple set, such as 2 by sample.Some is gathered for the instruction implied with k values, then recycles DCI In multidate information come indicate this set in some pattern.As shown in Figure 10 a.User is configured with 4 patterns, less The instruction Pattern 1 and 2 that k values can imply, the instruction Pattern3 and 4 that larger k values can imply.If in this way, k= 0, then it is DMRS pattern 1 or 2 that user, which may know that, and base station also needs to be Pattern with extra 1bit instructions 1 or 2.

Embodiment 2

When the default signaling is used to refer to demodulated reference signal port number, also it is used to refer to demodulated reference signal and exists Transmission on frequency domain is the first continuous or discrete namely described communication node by indicating demodulated reference signal end Transmission of the signaling of mouth number to the second communication node instruction demodulated reference signal on frequency domain is continuous or discrete. In other words, whether demodulated reference signal continuously transmits on frequency domain or discrete transmission is with DMRS port number or the layer of data Number has relation.

The uplink DMRS's of LTE is ZC sequences, i.e., is dispatched at one in frequency-domain segment, DMRS is necessary in a time-domain symbol Continuously transmit.And the DMRS sequences of a user can be sent out at equal intervals in frequency division multiple access (IFDMA) scheme based on intertexture Send, sent similar to the detection reference signal (SRS, Sounding Reference Signal) of uplink, as shown in Fig. 2 right figures.

Generally, when doing low rank scheduling, delay extension (delay spread) is smaller, and during high rank scheduling, delay Spread is larger, and selectivity of channel frequency can increase.

It is smaller for some delay spread, and rank is smaller, RS needs the user of power boosting, than Such as uplink, rank<When=2, IFDMA schemes can be used, i.e., it is discontinuous to send；Rank=3or 4, can use continuous DRMS schemes.This is because during rank=4, continuously transmit it is assumed that channel is identical in the continuous RE of every 4 frequency domains does It is orthogonal, and if with IFDMA schemes, it must assume that every 8 continuous RE channels are identical orthogonal to do.

For example, if user DMRS port are notified in DCI>=3, that is, represent that DMRS is continuously transmitted on frequency domain, then CS Field indicator instructions may be referred to chart 2.And if DMRS port<=2, then represent that DMRS is used on frequency domain IFDMA schemes, reference table 1.Because CS instructions are repeated in table 1.Wherein comb#0 refers to DMRS reference signals and takes even number load Ripple, and comb#1 represents that reference signal takes odd subcarriers.Refer to cyclic shift, meaning and phase in LTE Together.

Table 1

Table 2

Embodiment 3

When the default signaling is used to refer to the density and/or pattern of demodulated reference signal, scheduling money is also used to refer to Source, namely first communication node is by indicating that the signaling of scheduling resource indicates demodulated reference signal to the second communication node Density and/or pattern.

That is, the density of demodulated reference signal, and/or pattern have relation with the signaling for distributing resource.Such as if It is 1 time slot that the time domain unit length distributed during user is once dispatched in base station, when placing more than one preferably in this time slot at this time The demodulated reference signal of domain symbol, is so conducive to the frequency displacement of receiving terminal estimating Doppler and offset estimation.And if base station one Secondary scheduling user distributes multiple slots, then some reference signal time-domain symbols can be placed less on some slots, without Be each slot DMRS it is the same.

Such as different scheduling unit length configures different DMRS patterns, during the DMRS that one or more is placed at equal intervals Domain symbol can be used for sending DMRS.If the slow change of subscriber channel, if a time slot is dispatched in base station, then a DMRS can To be placed on time slot front end, such as the upper figures of Fig. 8.And if the time slot of base station scheduling is 3slots, first only in scheduling unit DMRS is placed in time-domain symbol, because channel becomes slowly, it is not necessary to too many DMRS, such as Fig. 8 figure below.

A variety of DMRS patterns such as Fig. 8 figure below, shown in Fig. 9-a, Fig. 9-b.It is only at one of scheduling time unit respectively DMRS is placed in OFDM symbol；In scheduling time unit, using first time-domain symbol as initial position, two are equally spaced placed A DMRS；In scheduling time unit, using first OFDM symbol as initial position, three DMRS are equally spaced placed.

Optionally, base station can be the more set DMRS patterns of each scheduling unit configuration, and the DMRS patterns that cover include different time domain more The DMRS configurations of density, can be used for sending wherein often covering in DMRS configurations comprising one or more time-domain symbols placed at equal intervals DMRS, the DMRS employed in current scheduled time unit is notified by high-level signaling or physical layer dynamic signaling pattern.For example as described above, there are a variety of DMRS pattern in when 3 slots, then base station is by signaling scheduling 3 It is any pattern during slots.Equally spaced DMRS, which is placed, refers to first time-domain symbol using data channel as initial position, To place DMRS at equal intervals before data channel end position in a scheduling unit.

In another example different scheduling time element lengths or data channel length gathers it from different DMRS pattern Between bind, such as：

Assuming that scheduling time element length or data channel length are N number of OFDM symbol,

When unit/data channel length is [1, n1] a OFDM symbol between when deployed, corresponding DMRS pattern set 1；

When unit/data channel length is [n1+1, n2] a OFDM symbol between when deployed, corresponding DMRS pattern collection Close 2；

When unit/data channel length is [n2+1, N] a OFDM symbol between when deployed, corresponding DMRS pattern collection Close 3.

Under every kind of DMRS pattern set, then by specifically used in DCI notice current scheduled time units DMRS pattern。

Every kind of DMRS pattern set includes at least one DMRS pattern；

Every kind of DMRS pattern include one or more OFDM symbols placed at equal intervals and are used to send DMRS, preferably Ground, can map DMRS in the OFDM symbol in a manner of subcarrier at equal intervals.

Wherein n1, n2 are the positive integer less than N, and the value of n1, n2 are predefined, or are led to by broadcast/RRC signaling Know.

DMRS patterns can be divided into multiple set, different resource allocation sizes or the method for salary distribution can correspond to difference DMRS pattern set.Including time domain, frequency domain distributes the size and mode of resource.

For example, if the frequency domain resource distributed for scheduling unit is of different sizes can also to correspond to different DMRS Pattern gathers.For example the pattern of DMRS includes 4 kinds, as shown in Figure 10 a.If the resource distributed on frequency domain is larger, or More than one thresholding, then channel estimation interpolation can be done on frequency domain, the pattern 2,4 of DMRS can be corresponded at this time, i.e., on frequency domain Density can reduce.Otherwise it is exactly pattern 2 or 4.After DMRS pattern set determines, it is implicit or clear that other may be also needed to Clear signaling instruction is which of set.

In addition, whether doing PRB bindings during scheduling, the PRB length of binding is how much to may also be used for implicit instruction DMRS Pattern.PRB bindings refer to that it is the same that the precoding used is dispatched in N number of PRB, or approximately, so difference PRB's Channel estimation in DMRS or data can use interpolation, and no person must do channel interpolation in PRB.

Embodiment 4

When the default signaling is used to refer to the demodulated reference signal pattern or density, demodulation ginseng is also used to refer to The orthogonal code length used in signal is examined, namely first communication node is used to give the instruction of the second communication node the demodulation ginseng The signaling for examining signal pattern or density can also be used to indicate the orthogonal code length used in demodulated reference signal.

The signaling of domain scheduling symbol lengths during instruction, indicates the signaling of orthogonal code maximum length, indicates demodulated reference signal The parameter signaling.When domain scheduling symbol lengths also refer to the length of time domain scheduling unit, i.e., domain scheduling at one The number of time slots that unit includes, or number of sub-frames.When domain scheduling symbol lengths can also refer to the time domain that includes in once scheduling Symbol numbers, such as OFDM symbol number, can also refer to the DMRS time-domain symbol numbers included in a time domain scheduling unit.

Or could also say that, first communication node is used to give the second communication node instruction demodulated reference signal institute Orthogonal code length can also be used to indicate the demodulated reference signal pattern or density.I.e. base station had both been taken with some signalings Information with demodulated reference signal pattern also carries the information of demodulated reference signal orthogonal code length at the same time.

That is, the orthogonal code length used in DMRS is with the pattern of demodulated reference signal, density, time domain scheduling unit Length, the length of orthogonal code maximum of configuration etc. one or more have relation.That is, the orthogonal code length of DMRS With above-mentioned relating to parameters, but not necessarily place one's entire reliance upon these parameters, it is also possible to reference to clearly signaling and these ginsengs The pattern position of number to determine DMRS etc..

In NR, the pattern of DMRS is probably configurable, that is to say, that base station may give a variety of DMRS of user configuration Pattern, different DMRS patterns may have different time-frequency density, or take different running time-frequency resources.Such as in a slot DMRS patterns set as shown in Figure 10 a, pattern in sharing 4.Believe possibly also with dynamic DCI signalings or high level RRC base station Order configuration wherein 1.If that configuration is pattern 1 or 2, then discounting for the DMRS joints between time slot with just If handing over code, only time domain orthogonal code cannot be utilized once row DMRS symbols, that is to say, that the length of orthogonal code is equal in time domain 1.And at this time, the orthogonal code length on frequency domain may also need to other explicit signalings or implicit be indicated to user.Such as If base station notifies that to user be pattern 1, then it is probably one in 1,2,3,4 that the orthogonal code length on frequency domain, which is, One either in 1,2,4, or 2, one in 4, handy other are signaled to user.If predefined regulation Or high-level signaling notice time domain orthogonal code can only be used in a time slot, such as Figure 10 a, if base station is to user configuration DMRS pattern 3 or 4, then the length of orthogonal code is exactly 2 in time domain.The DMRS of two ports is on two row RS Orthogonal code is [1 1] and [1-1] respectively.And if base station to user configuration is DMRS pattern 1 or 2, at that time on domain Orthogonal code length is exactly 1.

The length of orthogonal code can individually consider time domain, can also individually consider frequency domain.As shown in Figure 10 a, if base station Be allocated to the pattern 1 or 3 of user, it is believed that on frequency domain the length of orthogonal code be 4, i.e., on frequency domain every 4 continuously Subcarrier does orthogonal.As shown in fig. lob, 4 ports or user can do distinguishes by the orthogonal code that length is 4 on frequency domain, and 4 Orthogonal code of a port on continuous 4 RE is [1 11 1] respectively, [1-1 1-1], [1-1-1 1], [1 1-1-1].Cause It is that frequency domain is continuous for this 4 RE, so channel is more approximate, it is relatively good using the orthogonal code effect that length is 4.Such case It is relatively more suitable for DMRS port number, or number of users more situation during multiuser multiplexing.And if number of users is fewer, Or port number is fewer, the density of DMRS is just close not as comparing on frequency domain, and base station can be allocated to user DMRS pattern 2 or 4.Such as Figure 10 c.Continuous two subcarriers are used as orthogonal at this time.

In other words, the orthogonal code length that DMRS is sent is 2 or 4 can not have to explicit logical of signaling or with a small quantity Signal, because base station can come the implicit user that notifies, some be on orthogonal code using the signaling for indicating DMRS pattern The information of length.Certainly, once the length of orthogonal code determines, for example it is 2, then the sequence of orthogonal code is [1 1] or [1- 1] or handy signal.

Certainly, the length of orthogonal code can combine time domain and frequency domain to consider.For different DMRS pattern, So united orthogonal code length is different.As shown in Figure 10 a, if base station is allocated to user DMRS pattern 4, according to Described above, since time domain can do the orthogonal code that length is 2, and frequency domain can also do the orthogonal code that length is 2, if so Consider time-frequency domain, then the length of orthogonal code is exactly 4.In 4 RE as shown in fig. 10d (time domain 2, frequency domain 2) Using length most 4 DMRS ports or user can be distinguished for 4 orthogonal code.

However, due in NR a scheduling resource may include 1 or multiple time slots, wrapped in the unit once dispatched The DMRS columns contained is related with the number of time slots included in scheduling unit, and also the DMRS number with being included in a time slot is related System.So DMRS columns included in maximum no more than one scheduling unit of the length of usable orthogonal code in time domain.By Different in the speed of user, fireballing user is fast in the change of time domain upper signal channel, so what using time domain orthogonal code when included DMRS columns cannot be excessive, even if the scheduling unit that user is allocated is very long.So base station can be semi-static be allocated to user One maximum orthogonal code length, if the DMRS time domain symbolic numbers included in the scheduling unit of user's distribution are less than maximum orthogonality The length of code, then the time domain orthogonal code length that the DMRS actually sent is used is exactly the DMRS symbols included in scheduling unit Number.And if the DMRS time domain symbolic numbers included in the scheduling unit of user's distribution are more than the length of maximum orthogonality code, then use Family just sends DMRS or receives DMRS according to the maximum orthogonality code length of base station setting.

As noted previously, as base station may once dispatch multiple time slots, and how to reach maximum with less signaling Flexibility is also the point that the present invention studies.If with 1bit be fixed in DCI instruction be when once dispatching 1 time slot or 2 time slots, or fixed 2bits indicate 1,2,3,4 time slots, or 1,2,4,8 time slots.Flexibility is inadequate.It is because right 1 time slot of configuration or 2 time slots are may not be needed in the big user of some data volumes, and 6 time slots are desirable, Huo Zheyi Need to dispatch more multi-slot in secondary scheduling.So a kind of new method is as follows.

Base station can configure different minimum scheduling units by high-level signaling to different users, and minimum scheduling unit can To include such as 1,2,4,8 time slots.Then user is dynamically notified to be adjusted in once dispatching in DCI with less bits signalings Several minimum scheduling units have been spent, such as with 2bits come 1,2,4,8 or 1,2,3,4 minimum scheduling units of dynamic instruction.Example Such as, it is assumed that base station distribution UE0 minimum scheduling units are 1slot, and the minimum scheduling unit of U1 is 2slots, then for UE0, 2bits (the minimum scheduling unit of instruction 1,2,3,4) represents 1,2,3,4 slots, and represents 2,4,6,8 for U1,2bits A slots scheduling.

The maximum orthogonality code length of different user configurations can be different, can also be identical.Such as predefined configuration institute The time domain orthogonal sequence length for having user is exactly the DMRS symbol numbers in a minimum scheduling unit.It is limited to time domain orthogonal Code can only be used in a minimum scheduling unit.

Certainly also also orthogonal code can be limited in one time slot or in several time slots.Different user's orthogonal code lengths It is different.That is, base station can be done by signal deployment to user's time domain orthogonal code in several time slots.For example base station passes through 0 orthogonal code of high-level signaling instruction user can be used in 2 time slots, and indicate to wrap in the DMRS pattern of the user by DCI Containing 2 row DMRS, and distribute to the scheduling resource of unnecessary 2 time slots of the user, then the length of orthogonal code is exactly 4 in time domain, and If distribute to the scheduling resource of 1 time slot of the user, then the orthogonal code length of time domain is exactly 2.That is, base station can be with The applicable time domain scale of the maximum institute of orthogonal code is limited by signaling, is then sentenced by actual DMRS patterns and scheduling information The actual length sent of disconnected orthogonal code.

If one time scheduling unit includes N number of slots, and M DMRS symbol is included in a slots, then orthogonal code For example the length of OCC can at most reach N*M.On the one hand, since OCC length depends on the translational speed of user, so OCC long Degree is unsuitable long, otherwise influences channel estimation accuracy.On the other hand, the introducing of appropriate OCC can strengthen channel estimation essence Degree, and different sequences (even if the ZC sequence lengths of two DMRS are different or different with sequence) can be multiplexed, so, just The introducing for handing over code is also very necessary.Due to whether being OCC and depend on DMRS pattern and scheduling unit length, so According to the DMRS symbol numbers included in a slot, scheduling unit length, the maximum OCC length of RRC configurations or RRC configurations The usable number of time slots of OCC, it is relatively good that at least one parameter in these three parameters carrys out the implicit actual OCC length of instruction. Comprehensive channel evaluation characteristic, standard-complexity, control signaling expense are analyzed, and maximum OCC length is proper for 2 or 4.Or It is 1,2,4 or 8 time slot that person, which limits the maximum usable slot range of orthogonal code,.Different user scope can differ Sample.

It may rely on the DMRS symbol numbers in minimum scheduling unit.OCC is in a minimum scheduling unit.If One minimum scheduling unit is 2 slot, then OCC length is equal to the DMRS symbol numbers in the two slots.

The OCC length of configuration maximum that can be semi-static, is UE specific.Such as base station to user configuration maximum just Code length=2 are handed over, and if user is only assigned with a slot and only a DMRS symbol, avoid the need for being OCC, But if the resource of user's distribution includes more than 2 DMRS symbol, then just need to be the OCC that length is 2.

Such as notify CS, the value of OCC, Comb with 3bits.

If the cyclic shift of LTE uplinks DMRS (ZC sequences), OCC mapping tables are as follows if actual OCC length is equal to 2 Shown in table 3：

Table 3

If actual OCC length is equal to 1, the instruction of OCC values is ignored in upper table 3, can also be multiplexed by CS different DMRS port.

Embodiment 5

First communication node is used to indicate demodulated reference signal in a transmitting element to the second communication node A son take the signaling of root sequence used, can also be used to indicate demodulated reference signal on identical transmitting element not With root sequence used on subband, and/or different transmitting element same sub-bands, and/or different transmitting element different sub-bands.

Wherein, the root sequence on different sub-band can be different.

Wherein, different transmitting elements, the root sequence in same sub-band can be different.

Generally, each subband (block) is ZC sequences in this case.So base station can limit each user The minimum frequency domain resource of distribution is exactly 1 subband.So user can obtain accordingly according to the resource subband position of distribution DMRS sequences.Such as Figure 11, for a cell, the root sequence numbers on each block can be different, and with the change of slot Change and change.One transmitting element can refer to a time slot, a subframe, or multiple time slots, multiple subframes.Indicate a son Take, the signaling of root sequence used is indicated on a transmitting element can be used to refer on other subbands or other time slots The root sequence of all subbands.For example, the root sequence of all subbands over a slot is obtained by cell ID and timeslot number 's.The root sequence that one son takes is timeslot number, and/or subframe numbers, subband number, one or more the letter in cell ID Number.So the signaling for the root sequence that one son of instruction takes is exactly timeslot number, and/or subframe numbers, subband number, cell ID.Its In, for different sub-band, timeslot number, and/or subframe numbers, cell ID can be shared.It is and small for timeslot number, subband number Area ID can share.Root sequence on different sub-band it is random can so to reach sequence interference with time change Change.For different districts, the root sequence on synchronization, subband can be different.

It can configure the order of a baseline in all cell whole bandwidths, such as block#0,1 ... N-1's Root sequence is root#0,1,2 respectively ... N-1.This is sequentially used as baseline.Some on one time slot or subframe On subband Root (ns, cell_ID, block_ID)=mod (ns+cell_ID+baseline order of block_ID, N).The corresponding u values of root#n are exactly not necessarily 0 herein.For example 25 root values, root#n represent the #n root value altogether.

Selectable, RRC signaling can configure spec_ID and replace cell_ID.So for different districts some users just Identical spec_ID can be configured.If root sequence is identical, then can reach orthogonal by different cyclic shifts.

It is more flexible, can configure two or more spec_ID (including cell_ID) by RRC, during base station scheduling or With DCI dynamic selects one when person triggers RS.Such as two edge customers of two neighboring cell, comprising identical in spec_ID Spec_ID values, so if when running time-frequency resource is overlapping, DCI triggers identical spec_ID, while configures different CS Value.

First communication node is used to indicate demodulated reference signal in a transmitting element to the second communication node A son take the signalings of cyclically shifted sequences used, can also be used to indicate demodulated reference signal in identical transmitting element On different sub-band, and/or different transmitting element same sub-band, and/or different transmitting element different sub-bands on circulation used Shift sequence.

Wherein, the order of the cyclically shifted sequences on different sub-band can be different.

Wherein, different transmitting elements, the order of cyclically shifted sequences can be different in same sub-band.

In the case of the order of the cyclically shifted sequences on different sub-band is different, if Figure 12 is for a cell, each The order of CS Field instructions on block can be different.And change with the change of time.If figure is in slot0, for Subband 0, the instruction order of CS indicator is 0,1,2,3,4,5,6,7.If user CSI is told in base station by DCI signalings The value of Field is indicator#1 (001), such as following table 4-1, thenValue corresponding cyclic shift index be exactly 1,5, 3,7。

Table 4-1

Such as scheme slot0, for subband 1, the instruction order of CS indicator is 1,2,3,4,5,6,7,0.If base station Tell that the value of user CSI Field is indicator#1 (001) by DCI signalings, such as following table 4-2 or 4-3, then Value corresponding cyclic shift index be exactly 0,4,2,6 or 2,6,4,0.

Table 4-2

Table 4-3

That is, since the order of different sub-band cyclically shifted sequences is different, the CSI notified in DCI Field indicated values for different sub-band meaning be different, representative time cyclic shift value it is different.For different sons Frame or time slot are also the same.Described in claim, first communication node is used to indicate to the second communication node A son of the demodulated reference signal in a transmitting element takes the signaling of cyclically shifted sequences used, can also be used to refer to Show different sub-band, and/or different transmitting element same sub-band, and/or difference of the demodulated reference signal on identical transmitting element Cyclically shifted sequences used on transmitting element different sub-band, what is referred to is exactly that CSI field instructions can be shared on multiple subbands Value.The indicated value of a CSI field need to be only notified in DCI, user can extrapolate really according to different subbands CS values.

For a slot, the order of cyclically shifted sequences can be according to slot number and on each block Cell ID are calculated, it is not necessary to signal deployment.A baseline order can be configured in all cell whole bandwidths, than Such as CS order#0,1,2 ... N-1 is as baseline order for block#0,1 ... N-1.Cyclically shifted sequences it is suitable Sequence can be CS_order (ns, cell_ID, block_ID)=mod (ns+cell_ID+baseline order of block_ID,N).For same subframe, the sequence offsets of the cyclic shift in adjacent bandwidth one, as shown in figure 12.

Certainly, as the method for above-mentioned sequence, cell ID can be replaced with a spec_ID.This spec_ID can To be as the spec_ID mentioned in above-mentioned sequence.I.e. base station only needs to notify a spec_ID.

Signaling described in the embodiment of the present invention just refers to these spec_ID or cell ID, timeslot number, subframe numbers etc.. One subframe or time slot, all subbands can extrapolate the cyclically shifted sequences on each subband according to same spec_ID Sequentially.

First communication node is used to indicate demodulated reference signal in a transmitting element to the second communication node

In a son take the signaling of pattern sequence number used, can also be used to indicate demodulated reference signal in identical hair Send used on the different sub-band and/or different transmitting element same sub-bands and/or different transmitting element different sub-bands on unit Pattern sequence number.

Wherein, the pattern sequence number on different sub-band can be different.

Wherein, different transmitting elements, the pattern sequence number in same sub-band can be different.

DMRS patterns can be different between i.e. different block.As shown in figure 13.Base station can configure multiple DMRS figures Sample, the pattern on each subband can be different, can also change with time change.Pattern on each subband can be with Either cell ID timeslot numbers or subframe numbers are related by spec_ID.

The scheme of multistage cascade needs whole bandwidth being distributed into multiple block.

This scheme has scheduling to limit for packet services, because minimum scheduling unit has been constrained to a block.The present invention Middle system can support a variety of sub-band divisions.For example support two kinds of divisions：(1) one block=4PRBs；(2)one block =1PRBs.Different user can configure either DCI by RRC or block length is determined in a manner of implicit, for example dispatch The method of salary distribution.If the dispatching distribution mode of user determines that the resource of user's distribution is discrete, or PRB number comparison It is small, then with regard to acquiescence be dividing mode 2, be otherwise exactly dividing mode 1.

Embodiment 6

First communication node is indicated used in demodulated reference signal by indicating one or more following signaling Pattern, density and/or sequence：Indicate the signaling of modulation coding scheme, indicate the signaling of transmission mode, retransmit signaling, Reception mode.

Generally, the data sending of high order modulation requires higher to channel estimation, it is possible that needing demodulated reference signal Density bigger, and for low-order-modulated data sending to channel estimation require it is lower, so demodulated reference signal is close Degree can be lower.So for multiple DMRS Pattern of user configuration, the instruction of MCS can be divided into multiple collection Close, while the Patterns of DMRS is also divided into multiple set, a kind of every kind of corresponding DMRS pattern set of MCS set.Than Such as indicate the value of MCS from 0 to 31 with 5bits signalings, then MCS 0-15 correspond to a kind of DMRS pattern set, and MCS16-31 corresponds to another DMRS pattern set.As shown in figure 13, multiple Pattern of DMRS can be divided into 2 collection Close, first and second is a set, and the 3rd and the 4th is a set, if the value for signaling MCS is less than One threshold value, the pattern of DMRS is exactly pattern 1 and 2, is otherwise exactly pattern 3 and 4.

For the signaling of transmission mode, base station is generally used to tell that user is transmission diversity, Closed-Loop Spatial Multiplexing, Huo Zhekai Annular space multiplexing etc., it is possible to the pattern of DMRS, density etc. are inferred by this signaling.Equally can be by the pattern of DMRS point Into multiple set, different demodulated reference signals corresponds to different DMRS pattern set.

In addition, if the data of scheduling are to retransmit data, then the density of DMRS can be different.Equally can be by DMRS Pattern be divided into multiple set, retransmit or first pass corresponding be different DMRS pattern set.Different number of retransmissions can be right Answer different DMRS pattern set.For example, retransmit for the first time different with the DMRS patterns that second retransmits.So according to whether Retransmit, or the number UE retransmitted can be obtained by some information of DMRS patterns.

It is worth noting that, only a DMRS pattern can be included in a DMRS set.

Indication signaling for receiving mode, user can determine DMRS's according to different reception mode indication signalings Pattern set either pattern or DMRS sequences.If needing to do beam scanning when receiving for example, base station instruction user is different, that The pattern of DMRS can as described in Figure 14, i.e. the analog beam of multiple row DMRS is the same, and user can use different receptions Wave beam detects multiple row DMRS, then picks out a row best DMRS and is used to demodulate.The DMRS of different lines may be at this time It is simple to repeat, without sequence variation.

And receive beam scanning if it goes without doing when base station instruction user receives, then the pattern of DMRS can not have to multiple row DMRS corresponds to multiple analog beams.At this time if multiple row DMRS, corresponding sequence can be different.

Embodiment 7

First communication node indicates that the different demodulated reference signal group of the second communication node is corresponding by signaling The density and/or orthogonal code length of demodulated reference signal can be different.

Wherein, different demodulated reference signal groups corresponds to one or more mode：Different resource groups is different Demodulated reference signal port, different transmitted codewords, the different transmission numbers of plies.

In LTE, two code words can at most be transmitted by once dispatching, and each code word can include multiple layers.Each code word There is signaling to indicate HARQ process, instruction MCS etc..Each layer may correspond to different DMRS ports.

In 5G in future studies, since different DMRS ports may be from different base stations or cell, and it is right Whether it is multi-subscriber dispatching under different districts or base station, dispatches how many a users to do multiuser MIMO be all probably independent 's.So the density of different DMRS ports or port set if can it is different if, it is possible to reach maximum spirit Activity.As shown in figure 15, the density of port 1 and port 2 is higher than port 3 and port 4.If a user has been scheduled 2 Code word, 1 respective layer 1 and 2 of code word, and respective layer 1 and 2 is distinguished in port 1 and 2, if correspondingly, 2 corresponding ports 3 and 4 of code word, that The density of 1 corresponding DMRS of code word is higher than the corresponding DMRS density of code word 2.That is, DMRS different in the present invention Port, either code word or the density of the corresponding DMRS of layer can be different.Different DMRS resources can certainly be regarded as The corresponding DMRS density of group is different, for example as described in Figure 15, the density of the corresponding DMRS running time-frequency resources group of square frame above is just Higher than the corresponding DMRS density of DMRS running time-frequency resource groups in beneath square frame.The DMRS running time-frequency resources group in square frame is by 4 above RE is formed, and beneath only 2 RE compositions.

Because different port may be from different districts, in order to be multiplexed in different districts from the user of different numbers, So the length of orthogonal code may also be different.As described in Figure 15, because 1 and 2 corresponding time domain DMRS symbolic numbers of port are 2, institute 2 ports or 2 users so can be multiplexed by time domain orthogonal for 2 with the orthogonal code length in time domain.And for For port 3,4, since time domain only has a DMRS symbol, the orthogonal code length of time domain is 1, thus frequency domain can only be leaned on orthogonal or Person distinguishes port 3 and 4 on frequency domain using orthogonal code.

First communication node by dynamic signaling impliedly either clearly or the two notifies that second is logical in combination The parameter or pattern for believing the demodulated reference signal used in node are which of high-level signalings.Implicit notice is exactly base station DMRS drawing informations are indicated using the signaling of other purposes, such as such as the MCS that previous technique point is mentioned, A/N feedback delay etc.. And clearly notify that i.e. base station needs clear and definite bit to indicate DMRS information.Or the two combination.

For example, pattern in including 8 in predefined DMRS patterns, as shown in figure 16.Base station can utilize high-level signaling from 8 In 4 being picked out in pattern, such as pattern 1,2,3,4. and then in scheduling, the recycling dynamic signaling in base station notifies user Specifically which pattern, for example indicate it is which of subset that high-level signaling configures with the 2bits in DCI Pattern.Certainly, according to technology included in the present invention, what base station can be implied with other specification notify user some DMRS configuration informations, such as the DMRS pattern subsets that high-level signaling is configured are divided into two small subsets, for example pattern 1,2 is Small subset 1, pattern3,4 is small subset 2.Base station come implicit instruction can be small subset 1 or small subset by MCS signalings 2.In this way, base station just only needs extra 1bit in DCI to indicate being which of small subset DMRS pattern on earth.

Figure 19 is the structure composition schematic diagram one of the device of the configuration demodulated reference signal of the embodiment of the present invention, such as Figure 19 institutes Show, described device includes：

Indicating member 1901, for indicating the ginseng used in demodulated reference signal to the second communication node by default signaling Number；Wherein, the parameter used in the demodulated reference signal includes at least one of：The species of the sequence of demodulated reference signal, Time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port.

In the embodiment of the present invention, the indicating member 1901, is specifically used for：By indicating that ack/nack confirms ACK/ Parameter of the signaling of NACK feedback delay used in the second communication node instruction demodulated reference signal.

In the embodiment of the present invention, the indicating member 1901, is specifically used for：Referred to by indicating following at least one signaling Show the orthogonal code length used in demodulated reference signal：

In the embodiment of the present invention, the indicating member 1901 indicates demodulation ginseng by indicating following at least one signaling Examine pattern, density and/or the sequence used in signal：

In the embodiment of the present invention, the indicating member 1901 indicates that the different demodulation of the second communication node is joined by signaling Density and/or the orthogonal code length for examining the corresponding demodulated reference signal of signal group are different；

In the embodiment of the present invention, the indicating member 1901 is allocated to a variety of demodulation of the second communication node by high-level signaling Reference signal parameter；Alternatively, the second communication is allocated to from predefined multiple demodulated reference signal patterns by high-level signaling Node a portion pattern, also, the indicating member 1901 notifies the solution used in the second communication node by dynamic signaling The parameter or pattern for adjusting reference signal are which of high-level signalings.

In the embodiment of the present invention, the indicating member 1901 indicates that the second communication node is used to demodulate with the signaling joins The bandwidth for examining signal transmission supports a variety of division methods according to the difference of subband length.

The device of the above-mentioned configuration demodulated reference signal of the embodiment of the present invention is located at the first communication node, such as base station.

It will be appreciated by those skilled in the art that shown in Figure 19 configuration demodulated reference signal device in each unit reality Existing function can refer to the associated description of the method for aforementioned arrangements demodulated reference signal and understand.Configuration demodulation reference shown in Figure 19 The function of each unit in the device of signal can be realized by running on the program on processor, can also pass through specific logic Circuit and realize.

Figure 20 is the structure composition schematic diagram two of the device of the configuration demodulated reference signal of the embodiment of the present invention, such as Figure 20 institutes Show, described device includes：

Determination unit 2001, for determining demodulation ginseng by receiving the default signaling sent from the first communication node Examine the parameter used in signal；Wherein, the parameter used in the demodulated reference signal includes at least one of：Demodulated reference signal Sequence species, time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port.

In the embodiment of the present invention, the determination unit 2001 by from the first communication node be used for indicate certainly/ The signaling of negative confirmation ACK/NACK feedback delay determines the parameter of the demodulated reference signal.

In the embodiment of the present invention, the determination unit 2001 by from the first communication node be used for indicate demodulation reference The signaling of signal pattern determines the species of the sequence used in the demodulated reference signal.

In the embodiment of the present invention, the determination unit 2001 by from the first communication node be used for indicate demodulation reference The signaling of signal port number determines that the demodulated reference signal is continuous or discontinuous transmission on frequency domain.

In the embodiment of the present invention, the determination unit 2001 by from the first communication node be used for indicate demodulation reference The signaling of signal pattern and/or density determines the orthogonal code length used in the demodulated reference signal；Alternatively, by from The signaling for being used to indicate orthogonal code length used in the demodulated reference signal of first communication node determines that demodulation reference is believed Number pattern and/or density..

In the embodiment of the present invention, the determination unit 2001 passes through following at least one finger from the first communication node Show signaling to determine the orthogonal code length used in demodulated reference signal：

In the embodiment of the present invention, the determination unit 2001 by from the first communication node be used for indicate scheduling resource Signaling determine the density of the demodulated reference signal and/or pattern.

In the embodiment of the present invention, the determination unit 2001 passes through following at least one signaling from the first communication node To determine the density of the demodulated reference signal and/or pattern：

In the embodiment of the present invention, the signaling that the determination unit 2001 receives the first communication node indicates different demodulation The density and/or orthogonal code length of the corresponding demodulated reference signal of reference signal group are different；

In the embodiment of the present invention, the determination unit 2001 receives what first communication node was configured by high-level signaling A variety of demodulated reference signal parameters；Or is allocated to from predefined multiple demodulated reference signal patterns by high-level signaling Two communication node a portion patterns, also, the determination unit 2001 passes through the dynamic signaling from the first communication node Learn that the parameter of demodulated reference signal or pattern are which of high-level signalings.

In the embodiment of the present invention, the determination unit 2001 indicates demodulation reference by being used for from the first communication node A son of the signal in a receiving unit takes the signaling of root sequence used, to determine that demodulated reference signal connects identical Receive used on the different sub-band, and/or different receiving unit same sub-bands, and/or different receiving unit different sub-bands on unit Root sequence；

In the embodiment of the present invention, the determination unit 2001 indicates demodulation reference by being used for from the first communication node A son of the signal in a receiving unit takes the signaling of cyclically shifted sequences used, to determine that demodulated reference signal exists Different sub-band, and/or different receiving unit same sub-bands, and/or different receiving unit different sub-bands on identical receiving unit Upper cyclically shifted sequences used；

In the embodiment of the present invention, the determination unit 2001 indicates demodulation reference by being used for from the first communication node A son of the signal in a receiving unit takes the signaling of pattern sequence number used, to determine demodulated reference signal identical Institute on different sub-band, and/or different receiving unit same sub-bands, and/or different receiving unit different sub-bands on receiving unit Pattern sequence number；

In the embodiment of the present invention, the determination unit 2001 is determined according to the indication signaling from the first communication node Used sub-band division method.

The device of the above-mentioned configuration demodulated reference signal of the embodiment of the present invention is located at the second communication node, such as terminal.

It will be appreciated by those skilled in the art that shown in Figure 20 configuration demodulated reference signal device in each unit reality Existing function can refer to the associated description of the method for aforementioned arrangements demodulated reference signal and understand.Configuration demodulation reference shown in Figure 20 The function of each unit in the device of signal can be realized by running on the program on processor, can also pass through specific logic Circuit and realize.

It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program Product.Therefore, the shape of the embodiment in terms of the present invention can use hardware embodiment, software implementation or combination software and hardware Formula.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more to use storage The form for the computer program product that medium is implemented on (including but not limited to magnetic disk storage and optical memory etc.).

The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.

These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a square frame or multiple square frames.

The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.

Claims

A kind of 1. method for configuring demodulated reference signal, it is characterised in that the described method includes：

First communication node indicates the parameter used in demodulated reference signal by default signaling to the second communication node；Wherein, Parameter used in the demodulated reference signal includes at least one of：The species of the sequence of demodulated reference signal, time-domain position, Pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port.
2. the method for configuration demodulated reference signal according to claim 1, it is characterised in that first communication node By indicating that ack/nack confirms that the signaling of ACK/NACK feedback delay is indicated used in demodulated reference signal to the second communication node Parameter.
3. the method for configuration demodulated reference signal according to claim 1, it is characterised in that the default signaling is used for When indicating demodulated reference signal pattern, the species for the sequence being also used to refer to used in demodulated reference signal.
4. the method for configuration demodulated reference signal according to claim 1, it is characterised in that the default signaling is used for When indicating demodulated reference signal port number, it is continuously to go back right and wrong to be also used to refer to transmission of the demodulated reference signal on frequency domain Continuously.
5. the method for configuration demodulated reference signal according to claim 1, it is characterised in that the default signaling is used for When indicating the demodulated reference signal pattern or density, the orthogonal code length used in demodulated reference signal is also used to refer to.
6. the method for configuration demodulated reference signal according to claim 1, it is characterised in that first communication node The orthogonal code length used in demodulated reference signal is indicated by indicating following at least one signaling：

The signaling of domain scheduling symbol lengths, the signaling for indicating orthogonal code maximum length, the institute of instruction demodulated reference signal during instruction State the signaling of parameter.
7. the method for configuration demodulated reference signal according to claim 1, it is characterised in that the default signaling is used for When indicating the density and/or pattern of demodulated reference signal, scheduling resource is also used to refer to.
8. the method for configuration demodulated reference signal according to claim 1, it is characterised in that first communication node Pattern, density and/or the sequence used in demodulated reference signal are indicated by indicating following at least one signaling：

Indicate the signaling of modulation coding scheme, the signaling for indicating transmission mode, retransmit signaling, reception mode.
9. the method for configuration demodulated reference signal according to claim 1, it is characterised in that first communication node The density of the different corresponding demodulated reference signal of demodulated reference signal group of second communication node and/or orthogonal is indicated by signaling Code length is different；

Wherein, different demodulated reference signal groups corresponds to following at least one：Different resource groups, different demodulated reference signals Port, different transmitted codewords, the different transmission numbers of plies.
10. the method for configuration demodulated reference signal according to claim 1, it is characterised in that first communication node The a variety of demodulated reference signal parameters of second communication node are allocated to by high-level signaling；Alternatively, by high-level signaling from predefined Multiple demodulated reference signal patterns in be allocated to second communication node a portion pattern, also, first communication section Point notifies that the parameter of the demodulated reference signal used in the second communication node or pattern are in high-level signaling by dynamic signaling Which.
11. the method for configuration demodulated reference signal according to claim 1, it is characterised in that for demodulated reference signal The bandwidth of transmission can be divided into multiple subbands, wherein, it is a complete sequence on each subband.
12. the method for configuration demodulated reference signal according to claim 11, it is characterised in that the default signaling is used During indicating that a son of the demodulated reference signal in a transmitting element takes root sequence used, demodulation ginseng is also used to refer to Examine different sub-band, and/or different transmitting element same sub-band, and/or different transmitting element of the signal on identical transmitting element Root sequence used on different sub-band；

Wherein, the root sequence on different sub-band is similar and different；Root sequence difference or phase in different transmitting element same sub-bands Together.
13. the method for configuration demodulated reference signal according to claim 11, it is characterised in that the default signaling is used During indicating that a son of the demodulated reference signal in a transmitting element takes cyclically shifted sequences used, also it is used to refer to Different sub-band, and/or different transmitting element same sub-band, and/or different hair of the demodulated reference signal on identical transmitting element Send cyclically shifted sequences used on unit different sub-band；

Wherein, the order of the cyclically shifted sequences on different sub-band is similar and different；Wherein, in different transmitting element same sub-bands The order of cyclically shifted sequences is similar and different.
14. the method for configuration demodulated reference signal according to claim 11, it is characterised in that the default signaling is used During indicating that a son of the demodulated reference signal in a transmitting element takes pattern sequence number used, also it is used to refer to demodulate Different sub-band, and/or different transmitting element same sub-band, and/or different transmission of the reference signal on identical transmitting element are single Pattern sequence number used on first different sub-band；

Wherein, the pattern sequence number on different sub-band is similar and different；Wherein, the pattern sequence number in different transmitting element same sub-bands It is similar and different.
15. the method for configuration demodulated reference signal according to claim 11, it is characterised in that first communication section Point indicates that the second communication node is supported for the bandwidth that demodulated reference signal is sent according to the difference of subband length with the signaling A variety of division methods.
A kind of 16. method for configuring demodulated reference signal, it is characterised in that the described method includes：

Second communication node determines demodulated reference signal institute by receiving the default signaling sent from the first communication node Parameter；Wherein, the parameter used in the demodulated reference signal includes at least one of：The sequence of demodulated reference signal Species, time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port.
17. the method for configuration demodulated reference signal according to claim 16, it is characterised in that second communication section Point from the first communication node by being used to indicate that ack/nack to confirm that the signaling of ACK/NACK feedback delay is described to determine The parameter of demodulated reference signal.
18. the method for configuration demodulated reference signal according to claim 16, it is characterised in that second communication node The demodulated reference signal institute is determined by the signaling for being used to indicate demodulated reference signal pattern from the first communication node The species of sequence.
19. the method for configuration demodulated reference signal according to claim 16, it is characterised in that second communication node Determine that the demodulation reference is believed by the signaling for being used to indicate demodulated reference signal port number from the first communication node Number it is continuous on frequency domain or discontinuous transmission.
20. the method for configuration demodulated reference signal according to claim 16, it is characterised in that second communication node By determining the demodulation for indicating the signaling of demodulated reference signal pattern and/or density from the first communication node Orthogonal code length used in reference signal；Alternatively,

Second communication node passes through orthogonal used in the demodulated reference signal for indicating from the first communication node The signaling of code length determines demodulated reference signal pattern and/or density.
21. the method for configuration demodulated reference signal according to claim 16, it is characterised in that second communication section Point determines the orthogonal code length used in demodulated reference signal by following at least one indication signaling from the first communication node Degree：

The signaling of domain scheduling symbol lengths, the signaling for indicating orthogonal code maximum length, the institute of instruction demodulated reference signal during instruction State the signaling of parameter.
22. the method for configuration demodulated reference signal according to claim 16, it is characterised in that second communication node By from the first communication node be used to indicate the signaling of scheduling resource determine the density of the demodulated reference signal and/or Pattern.
23. the method for configuration demodulated reference signal according to claim 16, it is characterised in that second communication node The density of the demodulated reference signal and/or pattern are determined by following at least one signaling from the first communication node：

Indicate the signaling of modulation coding scheme, the signaling for indicating transmission mode, retransmit signaling, reception mode.
24. the method for configuration demodulated reference signal according to claim 16, it is characterised in that second communication section Point receive the first communication node signaling indicate the different corresponding demodulated reference signal of demodulated reference signal group density and/or Orthogonal code length is different；

Wherein, different demodulated reference signal groups corresponds to following at least one：Different resource groups, different demodulated reference signals Port, different transmitted codewords, the different transmission numbers of plies.
25. the method for configuration demodulated reference signal according to claim 16, it is characterised in that second communication node Receive a variety of demodulated reference signal parameters that first communication node is configured by high-level signaling；Or by high-level signaling from Second communication node a portion pattern, also, described second are allocated in predefined multiple demodulated reference signal patterns Communication node learns that the parameter of demodulated reference signal or pattern are high-rise letters by the dynamic signaling from the first communication node Which of order.
26. the method for configuration demodulated reference signal according to claim 16, it is characterised in that for demodulated reference signal The bandwidth partition of transmission into several subbands, wherein, be a complete sequence on each subband.
27. the method for configuration demodulated reference signal according to claim 26, it is characterised in that second communication section Point is used by being used to indicating that a son of the demodulated reference signal in a receiving unit to take from the first communication node The signaling of root sequence, to determine different sub-band, and/or different receiving unit phase of the demodulated reference signal on identical receiving unit With root sequence used on subband, and/or different receiving unit different sub-bands；

Wherein, the root sequence on different sub-band is similar and different；Wherein, the root sequence in different receiving unit same sub-bands is different It is or identical.
28. the method for configuration demodulated reference signal according to claim 26, it is characterised in that second communication section Point is used by being used to indicating that a son of the demodulated reference signal in a receiving unit to take from the first communication node The signaling of cyclically shifted sequences, to determine different sub-band, and/or different reception of the demodulated reference signal on identical receiving unit Cyclically shifted sequences used in unit same sub-band, and/or different receiving unit different sub-bands；

Wherein, the order of the cyclically shifted sequences on different sub-band is similar and different；Wherein, in different receiving unit same sub-bands Cyclically shifted sequences order it is similar and different.
29. the method for configuration demodulated reference signal according to claim 26, it is characterised in that second communication section Point is used by being used to indicating that a son of the demodulated reference signal in a receiving unit to take from the first communication node The signaling of pattern sequence number, to determine different sub-band, and/or different receiving unit of the demodulated reference signal on identical receiving unit Pattern sequence number used in same sub-band, and/or different receiving unit different sub-bands；

Wherein, the pattern sequence number on different sub-band is similar and different；Wherein, the pattern sequence number in different receiving unit same sub-bands It is similar and different.
30. the method for configuration demodulated reference signal according to claim 26, it is characterised in that second communication section Point determines used sub-band division method according to the indication signaling from the first communication node.
A kind of 31. device for configuring demodulated reference signal, applied to the first communication node, it is characterised in that described device includes：

Indicating member, for indicating the parameter used in demodulated reference signal to the second communication node by default signaling；Wherein, Parameter used in the demodulated reference signal includes at least one of：The species of the sequence of demodulated reference signal, time-domain position, Pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port.
32. the device of configuration demodulated reference signal according to claim 31, it is characterised in that the indicating member, tool Body is used for：By indicating that ack/nack confirms that the signaling of ACK/NACK feedback delay indicates demodulation reference to the second communication node Parameter used in signal.
33. the device of configuration demodulated reference signal according to claim 31, it is characterised in that the default signaling is used During indicating demodulated reference signal pattern, the species for the sequence being also used to refer to used in demodulated reference signal.
34. the device of configuration demodulated reference signal according to claim 31, it is characterised in that the default signaling is used During indicating demodulated reference signal port number, be also used to refer to transmission of the demodulated reference signal on frequency domain be it is continuous or It is discrete.
35. the device of configuration demodulated reference signal according to claim 31, it is characterised in that the default signaling is used During indicating the demodulated reference signal pattern or density, the orthogonal code length used in demodulated reference signal is also used to refer to.
36. the device of configuration demodulated reference signal according to claim 31, it is characterised in that the indicating member, tool Body is used for：The orthogonal code length used in demodulated reference signal is indicated by indicating following at least one signaling：

The signaling of domain scheduling symbol lengths, the signaling for indicating orthogonal code maximum length, the institute of instruction demodulated reference signal during instruction State the signaling of parameter.
37. the device of configuration demodulated reference signal according to claim 31, it is characterised in that the default signaling is used During indicating the density of demodulated reference signal and/or pattern, scheduling resource is also used to refer to.
38. the device of configuration demodulated reference signal according to claim 31, it is characterised in that the indicating member leads to The following at least one signaling of instruction is crossed to indicate pattern, density and/or the sequence used in demodulated reference signal：

Indicate the signaling of modulation coding scheme, the signaling for indicating transmission mode, retransmit signaling, reception mode.
39. the device of configuration demodulated reference signal according to claim 31, it is characterised in that the indicating member leads to Cross density and/or orthogonal code that signaling indicates the different corresponding demodulated reference signal of demodulated reference signal group of the second communication node Length is different；

Wherein, different demodulated reference signal groups corresponds to following at least one：Different resource groups, different demodulated reference signals Port, different transmitted codewords, the different transmission numbers of plies.
40. the device of configuration demodulated reference signal according to claim 31, it is characterised in that the indicating member passes through High-level signaling is allocated to a variety of demodulated reference signal parameters of the second communication node；Alternatively, by high-level signaling from predefined more Be allocated to second communication node a portion pattern in a demodulated reference signal pattern, also, the indicating member pass through it is dynamic State signals the parameter of the demodulated reference signal used in the second communication node or pattern is which of high-level signaling.
41. the device of configuration demodulated reference signal according to claim 31, it is characterised in that for demodulated reference signal The bandwidth of transmission can be divided into multiple subbands, wherein, it is a complete sequence on each subband.
42. the device of configuration demodulated reference signal according to claim 41, it is characterised in that the default signaling is used During indicating that a son of the demodulated reference signal in a transmitting element takes root sequence used, demodulation ginseng is also used to refer to Examine different sub-band, and/or different transmitting element same sub-band, and/or different transmitting element of the signal on identical transmitting element Root sequence used on different sub-band；

Wherein, the root sequence on different sub-band is similar and different；Root sequence difference or phase in different transmitting element same sub-bands Together.
43. the device of configuration demodulated reference signal according to claim 41, it is characterised in that the default signaling is used During indicating that a son of the demodulated reference signal in a transmitting element takes cyclically shifted sequences used, also it is used to refer to Different sub-band, and/or different transmitting element same sub-band, and/or different hair of the demodulated reference signal on identical transmitting element Send cyclically shifted sequences used on unit different sub-band；

Wherein, the order of the cyclically shifted sequences on different sub-band is similar and different；Wherein, in different transmitting element same sub-bands The order of cyclically shifted sequences is similar and different.
44. the device of configuration demodulated reference signal according to claim 41, it is characterised in that the default signaling is used During indicating that a son of the demodulated reference signal in a transmitting element takes pattern sequence number used, also it is used to refer to demodulate Different sub-band, and/or different transmitting element same sub-band, and/or different transmission of the reference signal on identical transmitting element are single Pattern sequence number used on first different sub-band；

Wherein, the pattern sequence number on different sub-band is similar and different；Wherein, the pattern sequence number in different transmitting element same sub-bands It is similar and different.
45. the device of configuration demodulated reference signal according to claim 41, it is characterised in that the indicating member is used It is a variety of according to the support of the difference of subband length that the signaling indicates that the second communication node is used for the bandwidth that demodulated reference signal is sent Division methods.
A kind of 46. device for configuring demodulated reference signal, applied to the second communication node, it is characterised in that described device includes：

Determination unit, for determining demodulated reference signal institute by receiving the default signaling sent from the first communication node Parameter；Wherein, the parameter used in the demodulated reference signal includes at least one of：The sequence of demodulated reference signal Species, time-domain position, pattern, density, orthogonal code length, root sequence, cyclically shifted sequences, the number of port.
47. the device of configuration demodulated reference signal according to claim 46, it is characterised in that the determination unit is led to The signaling for being used to indicate ack/nack confirmation ACK/NACK feedback delay from the first communication node is crossed to determine the demodulation The parameter of reference signal.
48. the device of configuration demodulated reference signal according to claim 46, it is characterised in that the determination unit passes through It is used to indicate the signaling of demodulated reference signal pattern to determine used in the demodulated reference signal from the first communication node The species of sequence.
49. the device of configuration demodulated reference signal according to claim 46, it is characterised in that the determination unit passes through It is used to indicate the signaling of demodulated reference signal port number to determine that the demodulated reference signal exists from the first communication node It is continuous or discontinuous transmission on frequency domain.
50. the device of configuration demodulated reference signal according to claim 46, it is characterised in that the determination unit passes through The signaling for being used to indicate demodulated reference signal pattern and/or density from the first communication node determines the demodulation reference Orthogonal code length used in signal；Alternatively,

By the signaling for being used to indicate the orthogonal code length used in the demodulated reference signal from the first communication node come really Determine demodulated reference signal pattern and/or density.
51. the device of configuration demodulated reference signal according to claim 46, it is characterised in that the determination unit is led to Following at least one indication signaling from the first communication node is crossed to determine the orthogonal code length used in demodulated reference signal：

The signaling of domain scheduling symbol lengths, the signaling for indicating orthogonal code maximum length, the institute of instruction demodulated reference signal during instruction State the signaling of parameter.
52. the device of configuration demodulated reference signal according to claim 46, it is characterised in that the determination unit passes through It is used to indicate the signaling of scheduling resource to determine the density of the demodulated reference signal and/or figure from the first communication node Sample.
53. the device of configuration demodulated reference signal according to claim 46, it is characterised in that the determination unit passes through Following at least one signaling from the first communication node determines the density of the demodulated reference signal and/or pattern：

Indicate the signaling of modulation coding scheme, the signaling for indicating transmission mode, retransmit signaling, reception mode.
54. the device of configuration demodulated reference signal according to claim 46, it is characterised in that the determination unit is received Signaling to the first communication node indicates the density of the different corresponding demodulated reference signal of demodulated reference signal group and/or orthogonal Code length is different；

Wherein, different demodulated reference signal groups corresponds to following at least one：Different resource groups, different demodulated reference signals Port, different transmitted codewords, the different transmission numbers of plies.
55. the device of configuration demodulated reference signal according to claim 46, it is characterised in that the determination unit receives A variety of demodulated reference signal parameters that first communication node is configured by high-level signaling；Or by high-level signaling from predetermined Second communication node a portion pattern, also, the determination unit are allocated in multiple demodulated reference signal patterns of justice The parameter of demodulated reference signal is learnt by the dynamic signaling from the first communication node or which in high-level signaling pattern be One.
56. the device of configuration demodulated reference signal according to claim 46, it is characterised in that for demodulated reference signal The bandwidth partition of transmission into several subbands, wherein, be a complete sequence on each subband.
57. the device of configuration demodulated reference signal according to claim 56, it is characterised in that the determination unit is led to Cross and be used to indicate that a son of the demodulated reference signal in a receiving unit takes root sequence used from the first communication node The signaling of row, to determine different sub-band, and/or different receiving unit identical son of the demodulated reference signal on identical receiving unit Root sequence used on band, and/or different receiving unit different sub-bands；

Wherein, the root sequence on different sub-band is similar and different；Wherein, the root sequence in different receiving unit same sub-bands is different It is or identical.
58. the device of configuration demodulated reference signal according to claim 56, it is characterised in that the determination unit is led to Cross and be used to indicate that a son of the demodulated reference signal in a receiving unit takes circulation used from the first communication node The signaling of shift sequence, to determine different sub-band, and/or different receiving unit of the demodulated reference signal on identical receiving unit Cyclically shifted sequences used in same sub-band, and/or different receiving unit different sub-bands；

Wherein, the order of the cyclically shifted sequences on different sub-band is similar and different；Wherein, in different receiving unit same sub-bands Cyclically shifted sequences order it is similar and different.
59. the device of configuration demodulated reference signal according to claim 56, it is characterised in that the determination unit is led to Cross and be used to indicate that a son of the demodulated reference signal in a receiving unit takes pattern used from the first communication node The signaling of sequence number, to determine that different sub-band, and/or different receiving unit of the demodulated reference signal on identical receiving unit are identical Pattern sequence number used on subband, and/or different receiving unit different sub-bands；

Wherein, the pattern sequence number on different sub-band is similar and different；Wherein, the pattern sequence number in different receiving unit same sub-bands It is similar and different.
60. the device of configuration demodulated reference signal according to claim 56, it is characterised in that the order primitive root really Sub-band division method used in being determined according to the indication signaling from the first communication node.