CN103517345B

CN103517345B - Downlink UE-specific DM-RS transmission method, UE and network-side device

Info

Publication number: CN103517345B
Application number: CN201210216400.7A
Authority: CN
Inventors: 高雪娟; 丁昱
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-06-26
Filing date: 2012-06-26
Publication date: 2017-02-22
Anticipated expiration: 2032-06-26
Also published as: WO2014000618A1; CN103517345A

Abstract

The invention discloses a downlink UE-specific DM-RS transmission method, UE and a network-side device. The method comprises: according to a pre-appointment of the UE and a network side, or according to configuration information sent by the network side, determining a DM-RS resource mapping manner used by a downlink channel, the DM-RS resource mapping manner comprising a first class DM-RS resource mapping manner and a second class DM-RS resource mapping manner, the first class DM-RS resource mapping manner being a DM-RS resource mapping manner defined in a long term evolution-advanced (LTE-A) Rel-10 system, and the second class DM-RS resource mapping manner being a mapping manner having reduced DM-RS occupied resources relative to the first class DM-RS resource mapping manner; and in a transmission resource of the downlink channel, acquiring DM-RS information according to the determined DM-RS resource mapping manner. According to the present invention, the DM-RS transmission overheads can be reduced, and the throughput can be improved.

Description

Downlink user special DM-RS transmission method and UE and network side apparatus

Technical field

The present invention relates to wireless communication technology field, the special DM-RS transmission method of more particularly, to a kind of downlink user and UE And network side apparatus.

Background technology

1）CA in LTE-A introduces

In order to meet LTE-A（Long Term Evolution-Advance, Long Term Evolution strengthens）To peak value speed in system Rate demand, introduces carrier aggregation（CA, Carrier Aggregation）Technology, will multiple companies under same base station eNB Continuous or discontinuous carrier aggregation, services for UE, as shown in Figure 1 simultaneously together.These polymerization carrier waves are also called member carrier （CC, Component Carrier）.The carrier wave that each cell Cell uses can be a member carrier.In order to ensure with The backwards compatibility of LTE system, each member carrier is less than 20MHz.

2）DM-RS in lte-a system introduces

9 kinds of downlink transfer patterns defined in lte-a system, the concrete downlink transfer pattern of UE is joined in advance by high-level signaling Put.Downlink user dedicated demodulation reference signal DM-RS（UE-specific DeModulation Reference Signal）With In the signal demodulation of transmission mode 7 ~ 9,1 ~ 8 antenna port transmission can be supported, be arranged respectively at antenna port p=5, p= 7, p=8 or p=7,8 ..., υ+6, wherein υ are PDSCH（Physical Downlink Shared Channel, under physics Row shared channel）The layer of transmission（Layer）Number.

DM-RS is only in the PRB being transmitted using transmission mode 7 ~ 9（Physical Resource Block, Physical Resource Block） Upper transmission, to reduce the interference between reference markss expense, saving energy, minimizing neighbor cell.As Fig. 2 a ~ Fig. 2 c exists for DM-RS One of each time slot that one subframe is comprised PRB（Physical Resource Block, Physical Resource Block）On money Source mapping mode, in figure laterally represents time-domain resource, with OFDM（Orthogonal Frequency Division Multiplexing, OFDM）Symbol is unit, and l is the OFDM symbol numbering in the different time-gap in a subframe, Longitudinally represent frequency domain resource, in units of subcarrier, k is subcarrier number, each jointly being determined by a l and k numbering is little Lattice represent a RE（Resource Element, Resource Unit）, wherein, for same subframe, DM-RS is in antenna port 7/8/ Mapping position on 11/13 is identical, and the mapping position on antenna port 9/10/12/14 is identical.By shown in Tables 1 and 2 Orthogonal sequence is come the orthogonality between ensureing using the antenna port of same asset mapping mode.As shown in Figure 2 c, under extension CP, DM-RS does not support to transmit in antenna port 9 ~ 14.

In Rel-10 system, in DM-RS and PBCH（Physical Broadcast Channel, Physical Broadcast Channel） There is the overlapping PRB of resource in data or synchronizing signal in same subframe（Such as 6 PRB in the middle of subdistrict frequency band）In, DM- RS does not send, and the PDSCH in therefore these PRB based on DM-RS demodulation, but can not can be based on CRS（Cell-specific Reference Signal, cell-specific reference markss）Demodulation.

Table 1：Under conventional CP, the DM-RS orthogonal sequence of different antennae port

Table 2：Under extension CP, the DM-RS orthogonal sequence of different antennae port

3）Extension carrier wave in lte-a system is introduced

In order to improve resource utilization ratio further, LTE-ARel-11 determines for CA system, introduces new wave-carring type （Additional Carrier Type or New Carrier Type, NCT）, with the strengthening system availability of frequency spectrum, preferably prop up Hold heterogeneous network, reduce power consumption.

The specific works mode of NCT is as follows：Reduce CRS expense, only support that on antenna port 0, the CRS with 5ms as cycle passes Defeated, and CRS is only used for tracking and measurement；Using enhancing Physical Downlink Control Channel（E-PDCCH, Enhanced Physical Downlink Control CHannel）Scheduling PDSCH transmission；Downlink data（Including E-PDCCH, PDSCH）It is all based on DM-RS Demodulation, and only support transmission mode 9；In Rel-11, NCT can not work independently, need to be with a tradition（legacy）Carrier wave gathers Close work；According to receiving terminal NCT, whether with legacy carrier wave there is certain deviation in the synchronization control in time domain and frequency domain, is divided into Synchronous and asynchronous NCT；Synchronous signal transmission is needed on asynchronous NCT, and the time-frequency domain resources of synchronous transmission of signal need to be with CRS、DM-RS、CSI-RS（Channel State Information Reference Signal, channel condition information reference Signal）Not overlapping Deng the resource of downlink reference signal, to improve NCT down transmission efficiency；Additionally, in Rel-12 and follow-up In version, NCT may support to work independently.

4）LTE-Hi introduces

Indoor（Indoor）/ hot spot region（Hotspots）Have towards low speed mobile terminal, multidiameter delay expansion etc. scene The features such as exhibition is less, covering radius is less.Cell small cell or basis as the deployment of the scenes such as Indoor/hotspot Ground cell local cell can work independently, or combines/cooperative work with a macrocell macro cell.

In order to meet burgeoning data traffic needs in Indoor/hotspot scene it is proposed that to LTE-Hi （LTE for Hotspot and Indoor）Research further.LTE-Hi, based on LTE and lte-a system, can pass through Spread bandwidth, such as using the band resource of the bigger bandwidth of high band, or adopt new physical layer transmission technology, for example NCT, dynamic Time Division duplex（Dynamic TDD, Dynamic Time Division Duplex）Technology, 256 quadrature amplitudes are adjusted System（QAM, Quadraure Amplitude Modulation）Deng the higher spectrum efficiency of realization and handling capacity.

Wherein, NCT due to have the reference markss that relative legacy carrier wave reduces and control channel expense, can be more preferable Support the features such as heterogeneous network, power consumption are relatively low, be relatively applied to the network designs such as Indoor/hotspot, additionally, NCT is as difference In the new wave-carring type of legacy carrier wave, can also be further introduced into reducing expense, the design of raising spectrum efficiency. Dynamic TDD technology, can be adapted to more preferable according to the transmission direction of current business demand dynamic configuration part subframe The scenes such as the asymmetric Indoor/hotspot of uplink/downlink portfolio.

Being in lower-speed state UE in Indoor/hotspot scene more, between multiple OFDM symbol of a sub- frame in, with And the channel relevancy between adjacent sub-frame is higher, can consider to reduce DM-RS in time domain on the premise of not affecting UE demodulation performance On resource overhead, improve handling capacity；In the same manner, when the scenes such as Indoor/hotspot use the frequency domain channel dependency of frequency range When higher, it is possible to decrease resource overhead on frequency domain for the DM-RS, improve handling capacity.But there is presently no based on Indoor/ The reduction expense DM-RS transmission method of hotspot scene feature.

Content of the invention

The present invention provides a kind of downlink user special DM-RS transmission method and UE and network side apparatus, in order to reduce The DM-RS transport overhead of Indoor/hotspot scene simultaneously improves handling capacity.

The present invention provides a kind of downlink user dedicated demodulation reference signal DM-RS transmission method, including：

According to making an appointment of user equipment (UE) and network side, or the configuration information being sent according to network side, under determination The DM-RS resource mapping method that row channel adopts, described DM-RS resource mapping method is divided into first kind DM-RS esource impact side Formula and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource mapping method strengthens LTE-A for Long Term Evolution DM-RS resource mapping method defined in Rel-10 system, described Equations of The Second Kind DM-RS resource mapping method is with respect to described One class DM-RS resource mapping method DM-RS takies the mapping mode that resource reduces；

In the transfer resource of described down channel, the DM-RS resource mapping method according to described determination obtains DM-RS letter Breath.

The present invention also provides a kind of downlink user dedicated demodulation reference signal DM-RS transmission method, including：

Determine the DM-RS resource mapping method that down channel adopts, described DM-RS resource mapping method is divided into the first kind DM-RS resource mapping method and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource mapping method is long-term Evolution strengthens the DM-RS resource mapping method defined in LTE-A Rel-10 system, described Equations of The Second Kind DM-RS resource mapping method It is to take, with respect to described first kind DM-RS resource mapping method DM-RS, the mapping mode that resource reduces；

In the transfer resource of described down channel, DM-RS money is carried out according to the DM-RS resource mapping method of described determination Source mapping and transmission.

The present invention also provides a kind of user equipment (UE), including：

Determining unit, for making an appointment according to described UE and network side, or the configuration letter being sent according to network side Breath, determines the DM-RS resource mapping method that down channel adopts, and described DM-RS resource mapping method is divided into first kind DM-RS to provide Source mapping mode and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource mapping method strengthens for Long Term Evolution DM-RS resource mapping method defined in LTE-A Rel-10 system, described Equations of The Second Kind DM-RS resource mapping method be with respect to Described first kind DM-RS resource mapping method DM-RS takies the mapping mode that resource reduces；

Acquiring unit, in the transfer resource of described down channel, according to the DM-RS esource impact side of described determination Formula obtains DM-RS information.

The present invention also provides a kind of network side apparatus, including：

Determining unit, for determining the DM-RS resource mapping method that down channel adopts, described DM-RS esource impact side Formula is divided into first kind DM-RS resource mapping method and Equations of The Second Kind DM-RS resource mapping method, and described first kind DM-RS resource is reflected Penetrate DM-RS resource mapping method defined in Long Term Evolution enhancing LTE-A Rel-10 system for the mode, described Equations of The Second Kind DM-RS Resource mapping method is to take, with respect to described first kind DM-RS resource mapping method DM-RS, the mapping mode that resource reduces；

Transmission unit, in the transfer resource of described down channel, according to the DM-RS esource impact side of described determination Formula carries out DM-RS esource impact and transmission.

The downlink user special DM-RS transmission method being provided using the present invention and UE and network side apparatus, having following has Beneficial effect：The downlink user special DM-RS transmission method that provide the present invention and UE and network side apparatus are applied to Indoor/ During hotspot scene, DM-RS transport overhead can be reduced, improve handling capacity.

Brief description

Fig. 1 is carrier aggregation schematic diagram in existing lte-a system；

Fig. 2 a is the DM-RS resource map under existing routine CP, on antenna port 7 and 8；

Fig. 2 b is the DM-RS resource map under existing routine CP, on antenna port 9 and 10；

Fig. 2 c is the DM-RS resource map under existing extension CP, on antenna port 7 and 8；

Fig. 3 is embodiment of the present invention network side downlink user special DM-RS transmission method flow chart；

Fig. 4 is embodiment of the present invention end side downlink user special DM-RS transmission method flow chart；

Fig. 5 a is that the time domain truncate DM-RS resource mapping method one of conventional descending sub frame under embodiment of the present invention routine CP is shown It is intended to；

The time domain truncate DM-RS resource mapping method one that Fig. 5 b extends conventional descending sub frame under CP for the embodiment of the present invention is shown It is intended to；

Fig. 6 a is that the time domain truncate DM-RS resource mapping method two of conventional descending sub frame under embodiment of the present invention routine CP is shown It is intended to；

The time domain truncate DM-RS resource mapping method two that Fig. 6 b extends conventional descending sub frame under CP for the embodiment of the present invention is shown It is intended to；

Fig. 7 a, Fig. 7 b are the time domain truncate DM-RS resource mapping method of TDD special subframe under embodiment of the present invention routine CP Schematic diagram；

Fig. 8 a, Fig. 8 b, Fig. 8 c, Fig. 8 d extend the frequency domain truncate DM-RS of conventional descending sub frame under CP for the embodiment of the present invention Resource mapping method schematic diagram；

User device architecture figure in Fig. 9 embodiment of the present invention；

Figure 10 is network side apparatus structure chart in the embodiment of the present invention.

Specific embodiment

The downlink user special DM-RS the transmission method with reference to the accompanying drawings and examples present invention being provided and UE and network Side device is illustrated in greater detail.

In existing mobile communication system, there are about 70% mobile data services and come from interior（Indoor）Or hot spot region （Hotspots）, in the coming years, Indoor/hotspot business will occupy the 90% of mobile data services total amount.In order to adapt to Burgeoning data traffic needs in these scenes, need to study the method improving spectrum efficiency and handling capacity further.

Being in lower-speed state, multiple OFDMs of a sub- frame in UE in Indoor/hotspot scene more Channel relevancy between OFDM symbol and between adjacent sub-frame is higher, can consider to drop on the premise of not affecting UE demodulation performance Resource overhead in time domain for the low DM-RS, improves handling capacity；In the same manner, when the scenes such as Indoor/hotspot use the frequency of frequency range When domain channel relevancy is also high, it is possible to decrease resource overhead on frequency domain for the DM-RS, improve handling capacity.There is presently no and be based on The low overhead DM-RS transmission method of Indoor/hotspot scene feature.

The present invention gives a kind of DM-RS transmission method, to reduce the overhead of Indoor/hotspot scene, improve Handling capacity, in following declarative procedure, the cooperation from network side and end side is implemented to illustrate, but this does not imply that two Person must coordinate enforcement, in fact, when network side is performed separately with end side, also solving respectively in network side, end side The problems of, when simply the two is used in combination, superior technique effect can be obtained.

As shown in figure 3, for network side, downlink user dedicated demodulation reference signal DM-RS transmission method, including：

Step 301, determines the DM-RS resource mapping method that down channel adopts, and described DM-RS resource mapping method is divided into First kind DM-RS resource mapping method and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource mapping method Strengthen the DM-RS resource mapping method defined in LTE-A Rel-10 system for Long Term Evolution, described Equations of The Second Kind DM-RS resource is reflected The mode of penetrating is to take, with respect to described first kind DM-RS resource mapping method DM-RS, the mapping mode that resource reduces；

For down channel, available DM-RS resource mapping method includes two classes, first kind DM-RS resource mapping method For legacy DM-RS resource mapping method, the i.e. resource to the definition of each DM-RS antenna port in LTE-A Rel-10 system Mapping mode, Equations of The Second Kind DM-RS resource mapping method, reduce DM-RS transmission with respect to first kind DM-RS resource mapping method Expense.

Step 302, in the transfer resource of described down channel, enters according to the DM-RS resource mapping method of described determination Row DM-RS esource impact and transmission.

The transfer resource of down channel, the time-domain resource taking including downlink channel transmission and frequency domain resource, time-domain resource Subframe/time slot/OFDM symbol taking for down channel etc., the subcarriers/subcarrier institute that frequency domain resource takies for down channel Corresponding Physical Resource Block PRB, for E-PDCCH, may also include E-CCE（Enhanced Control Channel Element, strengthens control channel unit）Or E-REG（Enhanced Resource Element Group, strengthens Resource Unit Group）.

Preferably, network side determines the DM-RS resource mapping method that down channel adopts, can using following either one Formula：

Mode one, according to transmission conditions and/or transmission demand, determines the DM-RS resource mapping method that down channel adopts, Then further include：Send the configuration information for indicating DM-RS resource mapping method to user equipment (UE)；

Mode two, according to making an appointment of network side and user equipment (UE), determines that the DM-RS resource that down channel adopts is reflected Penetrate mode it is not necessary to UE send configuration information.

While network side carries out DM-RS esource impact and transmission according to the DM-RS resource mapping method of described determination, also Transmit the information being demodulated based on described DM-RS.Different down channels adopts in the transfer resource of this down channel should The DM-RS method for mapping resource that down channel uses carries out esource impact, and the data message that down channel is carried is mapped in On RE in addition to the RE that DM-RS takies in transfer resource.

For end side, as shown in figure 4, downlink user dedicated demodulation reference signal DM-RS transmission method includes：

Step 401, according to making an appointment of user equipment (UE) and network side, or the configuration letter being sent according to network side Breath, determines the DM-RS resource mapping method that down channel adopts, and described DM-RS resource mapping method is divided into first kind DM-RS to provide Source mapping mode and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource mapping method strengthens for Long Term Evolution DM-RS resource mapping method defined in LTE-A Rel-10 system, described Equations of The Second Kind DM-RS resource mapping method be with respect to Described first kind DM-RS resource mapping method DM-RS takies the mapping mode that resource reduces；

Step 402, in the transfer resource of described down channel, obtains according to the DM-RS resource mapping method of described determination Take DM-RS information, thus the information carrying in down channel is demodulated based on described DM-RS information.

The present embodiment available DM-RS resource mapping method includes two classes, is no longer used uniformly across as prior art One class DM-RS resource mapping method, special for this downlink user DM-RS transmission method is applied to special scenes, such as Indoor/ During the scenes such as hotspot, transport overhead can be reduced and improve handling capacity.

When the embodiment of the present invention is applied to Indoor/hotspot scene, base station and UE specifically can be in cells small Cell or home cell local cell works independently, or combines/cooperative work with a macrocell macro cell.

Can work according to NCT carrier system for small cell or local cell.

For network side, when employing mode one determines the DM-RS resource mapping method that down channel adopts, it is preferred to use such as Under arbitrary determination mode：

1）Determine that all down channels of described UE adopt first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS money Source mapping mode.

Then further include：Laterally described UE sends the DM-RS resource mapping method for indicating described determination to network Configuration information.

Specifically, when all down channels of described UE all meet transmission conditions and/or transmission demand, determine all Down channel all using Equations of The Second Kind DM-RS resource mapping method, otherwise, it determines all down channels are all using first kind DM-RS Resource mapping method, and the configuration information of the DM-RS resource mapping method determining for instruction is sent to UE, for example, configuration letter " 0 " of 1 bit information in breath, one state represent the first kind, Equations of The Second Kind DM-RS resource mapping method respectively.

Accordingly, for UE side：, according to described configuration information, all down channels determining described UE are all using described for UE DM-RS resource mapping method.

2）For each down channel, determine that described down channel adopts first kind DM-RS resource mapping method or second Class DM-RS resource mapping method, or, determine described down channel in the subframe meeting condition and/or Physical Resource Block PRB Using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method, otherwise, using another kind of DM-RS Resource mapping method；That the described subframe meeting condition and/or PRB determine for network side and by described configuration information with institute State the corresponding configuration information of down channel to notify to described UE, or be the determination of making an appointment according to network side and described UE.

Then further include：Network laterally described UE send configuration information, comprises in described configuration information independently to indicate not The configuration information of the DM-RS resource mapping method adopting with down channel.

Specifically, to each down channel, when this down channel meets transmission conditions and/or transmission demand, determine This down channel uses Equations of The Second Kind DM-RS resource mapping method, otherwise, using first kind DM-RS resource mapping method, and to UE Send the configuration information for indicating DM-RS resource mapping method, comprise in this configuration information independently to indicate different down channels Using DM-RS resource mapping method configuration information；For example, comprise 1 bit configuration of every kind of down channel in configuration information With " 0 " of this 1 bit information, one state, information, represents that this down channel adopts the first kind or Equations of The Second Kind DM-RS resource respectively Mapping mode；Illustrate it is assumed that UE has 3 kinds of channels of E-PDCCH, PBCH, PDSCH, the every bit in 3 bit informations divides Do not indicate every kind of channel DM-RS resource mapping method or, for example agreement " 0 " represent adopt first kind DM-RS esource impact Mode, " 1 " represent that, using Equations of The Second Kind DM-RS resource mapping method, configuration information " 001 " can represent that E-PDCCH adopts the first kind DM-RS resource mapping method, PBCH adopts first kind DM-RS resource mapping method, and PDSCH is reflected using Equations of The Second Kind DM-RS resource Penetrate mode；Or,

Different down channels may be at different conditions using different DM-RS resource mapping method, that is,：Situation 1：When When one down channel meets transmission conditions and/or transmission demand, determine that this down channel all uses in any transmission subframe Equations of The Second Kind DM-RS resource mapping method, otherwise, using first kind DM-RS resource mapping method；Situation 2：When a down channel Specific subframe and/or PRB meet transmission conditions and/or transmission demand when, determine this down channel specific sub-frame and/ Or using Equations of The Second Kind DM-RS resource mapping method in PRB, otherwise, using first kind DM-RS resource mapping method, and send out to UE Send the configuration information for indicating DM-RS resource mapping method, comprise in this configuration information independently to indicate that different down channels are adopted The configuration information of DM-RS resource mapping method；For example, for the down channel in situation 1, comprise every kind of in configuration information With " 0 " of this 1 bit information, one state, 1 bit configuration information of down channel, represents that this down channel adopts first respectively Class or Equations of The Second Kind DM-RS resource mapping method, for the down channel in situation 2, comprise every kind of down channel in configuration information A bit configuration information, this A bit information is used for indicating specific sub-frame and/or PRB resource, for example, directly indicate specific sub-frame Numbering and/or PRB numbering, or, this A bit information indicates the information for determining specific sub-frame and/or PRB resource, for example, refer to Show period of sub-frame S and a sub-frame offset offset, determine that subframe number n meets（n-offset）The subframe of modS=0 For specific sub-frame, indicate a PRB set, this PRB collection is combined into one of predefined multiple PRB set of system；Above-mentioned A Used in the specific sub-frame of bit information instruction and/or PRB resource, DM-RS resource mapping method can be made an appointment, For example make an appointment using Equations of The Second Kind DM-RS resource mapping method, or comprise 1 bit information in this A bit information and be used for Indicate that above-mentioned specific sub-frame and/or PRB resource use the first kind or Equations of The Second Kind DM-RS resource mapping method.

Accordingly, for UE side：UE, according to the corresponding configuration information of each down channel, determines that described down channel adopts First kind DM-RS resource mapping method or Equations of The Second Kind DM-RS resource mapping method, or, determine that described down channel is meeting The one type DM-RS resource mapping method of described two class DM-RS resource mapping method is adopted in the subframe of condition and/or PRB, Otherwise, using another kind of DM-RS resource mapping method, the described subframe meeting condition and/or PRB are according in described configuration information Configuration information corresponding with described down channel determines or the determination of making an appointment according to described UE and network side.

3）Determine that Physical Downlink Shared Channel PDSCH adopts first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS money Source mapping mode；Or, determine that PDSCH adopts described two class DM-RS esource impacts in the subframe meeting condition and/or PRB The one type DM-RS resource mapping method of mode, otherwise, using another kind of DM-RS resource mapping method, described meets condition Subframe and/or PRB determine for network side and notify to described UE by described configuration information or be according to network side and institute State the determination of making an appointment of UE.

Then further include：Network laterally described UE send configuration information, described configuration information only indicates what PDSCH adopted DM-RS resource mapping method.

Specifically, to PDSCH, when meeting transmission conditions and/or transmission demand, determine that PDSCH uses Equations of The Second Kind DM- RS resource mapping method, otherwise, using first kind DM-RS resource mapping method, and sends for indicating that DM-RS resource reflects to UE Penetrate the configuration information of mode, comprise in this configuration information to indicate the configuration information of the DM-RS resource mapping method of PDSCH；For example, " 0 " of 1 bit information in configuration information, one state represent that PDSCH is reflected using the first kind or Equations of The Second Kind DM-RS resource respectively Penetrate mode；Or,

To PDSCH, when meeting transmission conditions and/or transmission demand in specific subframe and/or PRB, determine PDSCH Using Equations of The Second Kind DM-RS resource mapping method in specific sub-frame and/or PRB, otherwise, using first kind DM-RS esource impact Mode, and the configuration information for indicating DM-RS resource mapping method is sent to UE；For example, the A bit configuration in configuration information Information instruction specific sub-frame and/or PRB resource, for example directly instruction specific sub-frame numbering and/or PRB number, or, A bit letter Breath instruction for determining specific sub-frame and/or the information of PRB resource, for example, indicates period of sub-frame S and a sub-frame offset Amount offset, determines that subframe number n meets（n-offset）The subframe of modS=0 is specific sub-frame, one PRB set of instruction, should PRB collection is combined into one of predefined multiple PRB set of system；The specific sub-frame of above-mentioned A bit information instruction and/or Used in PRB resource, DM-RS resource mapping method can be made an appointment, for example, make an appointment using Equations of The Second Kind DM-RS Resource mapping method, or comprise 1 bit information in this A bit information and be used for indicating above-mentioned specific sub-frame and/or PRB resource Using the first kind or Equations of The Second Kind DM-RS resource mapping method.

Accordingly, for UE side：UE, according to the corresponding configuration information of PDSCH, determines that PDSCH adopts first kind DM-RS to provide Source mapping mode or Equations of The Second Kind DM-RS resource mapping method；Or, determine PDSCH in the subframe meeting condition and/or PRB Using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method, otherwise, using another kind of DM-RS Resource mapping method, the described subframe meeting condition and/or PRB determine according to described configuration information or according to described UE and network The determination of making an appointment of side.

For mode one, network side passes through physical downlink control channel PDCCH signaling, strengthens Physical Downlink Control Channel E- At least one signaling in PDCCH signaling, media access control MAC signaling, radio resource control RRC signaling, sends out to described UE Send described configuration information.Accordingly, UE passes through PDCCH signaling, E-PDCCH signaling, media access control MAC signaling, wireless money Source controls at least one signaling in RRC signaling to receive described configuration information.

For mode two, network side and user equipment (UE) are made an appointment identical DM-RS resource mapping method, for network Side and UE, determine the DM-RS resource mapping method that down channel adopts, specifically can be using following arbitrary or several determination sides The combination of formula：

1）Determine that E-PDCCH adopts first kind DM-RS resource mapping method；

2）Determine Physical Broadcast Channel PBCH（There is PBCH as in the cell of the NCT being deployed as autonomous working）Using first Class DM-RS resource mapping method；

3）Determine PDSCH in all transmission subframes of described PDSCH, using Equations of The Second Kind DM-RS resource mapping method, or Person, in meeting the transmission subframe imposing a condition and/or PRB, using the one type of described two class DM-RS resource mapping method DM-RS resource mapping method, otherwise, using another kind of DM-RS resource mapping method.

Wherein mode 3）Determine PDSCH in meeting the transmission subframe imposing a condition and/or PRB, using described two classes DM- The one type DM-RS resource mapping method of RS resource mapping method, otherwise, using another kind of DM-RS resource mapping method, has Body can be using preferred implementation that is arbitrary as follows or appointing several combinations：

1. determine that PDSCH meets in subframe number n（n-offset1）In the transmission subframe of modS1=0, using Equations of The Second Kind DM-RS resource mapping method, in PDSCH in other transmission subframes, using first kind DM-RS resource mapping method；

Or, determine that PDSCH meets in subframe number n（n-offset1）In the transmission subframe of modS1=0, adopt first Class DM-RS resource mapping method, PDSCH transmits in subframes at other, using Equations of The Second Kind DM-RS resource mapping method；

Wherein, the periodic quantity that S1 makes an appointment or high-level signaling configures, offset1 is to make an appointment or high-level signaling The subframe number deviant of configuration.

2. determine that PDSCH adopts first kind DM-RS resource mapping method in TDD special subframe, PDSCH exists Equations of The Second Kind DM-RS resource mapping method is adopted in other transmission subframes；

Or, determine that PDSCH adopts first kind DM-RS resource in the TDD special subframe using conventional cyclic prefix CP Mapping mode, PDSCH adopts Equations of The Second Kind DM-RS resource mapping method in other transmission subframes；

Or, determine that PDSCH adopts first kind DM-RS resource mapping method in the TDD special subframe using extension CP, PDSCH adopts Equations of The Second Kind DM-RS resource mapping method in other transmission subframes.

3. determine that PDSCH adopts first kind DM- in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal RS resource mapping method, PDSCH adopts Equations of The Second Kind DM-RS resource mapping method in other transmission subframes；Or,

Determine PDSCH in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal, only in PDSCH transmission institute PRB set in comprise in the PBCH and/or PRB of synchronous transmission of signal, using first kind DM-RS resource mapping method, Do not comprise in remaining PRB in the PRB that its transmission is located gathers for the PDSCH or the PBCH and/or PDSCH of synchronous transmission of signal to pass In defeated subframe, using Equations of The Second Kind DM-RS resource mapping method；Or,

Determine PDSCH in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal, be located in PDSCH transmission PRB set in when comprising the PRB that PBCH and/or synchronous transmission of signal are located, using first kind DM-RS resource mapping method, Do not comprise in the PRB set that PDSCH transmission is located during the PRB that PBCH and/or synchronous transmission of signal be located or do not comprising PBCH And/or in the PDSCH transmission subframe of synchronous transmission of signal, using Equations of The Second Kind DM-RS resource mapping method（I.e. in PDSCH transmission Such DM-RS resource mapping method is all adopted on all PRB in the PRB set being located）.

4. determine PDSCH in the re-transmission subframe of described PDSCH, using first kind DM-RS resource mapping method, described In the first biography subframe of PDSCH, using Equations of The Second Kind DM-RS resource mapping method.

4）Determine that PDSCH adopts first kind DM-RS esource impact side in the described PDSCH transmission subframe on macrocell Formula.

Specifically, aforesaid way 1）To mode 4）4 kinds of modes and each way in multiple submodes can be only Vertical effect；Can also combination in any act on, that is,：One type DM-RS esource impact side will be adopted in multiple modes and submode The conditional combination of formula, determines and meets combination condition（Meet in any 1 mode in multiple modes and submode of combination Condition）PDSCH adopt such DM-RS resource mapping method, otherwise, using another kind of DM-RS resource mapping method；Specifically may be used To include but is not limited to following situation：

Determine and meet in subframe number n（n-offset1）The PDSCH of transmission in the subframe of modS1=0, and/or, in the time-division Duplexing TDD special subframe（Or in specific special subframe, such as using the special subframe of conventional CP, or using extension CP's Special subframe, or there is the special subframe of specific special subframe configuration）The PDSCH of middle transmission, and/or, comprising PBCH And/or the PDSCH transmitting in the subframe of synchronous transmission of signal, and/or, the PDSCH of re-transmission, and/or, transmission on macrocell PDSCH, using first kind DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or Person,

Determine and meet in subframe number n（n-offset1）The PDSCH of transmission in the transmission subframe of modS1=0, and/or, In TDD special subframe（Or in specific special subframe, such as using the special subframe of conventional CP, or using expansion The special subframe of exhibition CP, or there is the special subframe of specific special subframe configuration）The PDSCH of middle transmission, and/or, Comprise in PBCH and/or part PRB of synchronous transmission of signal in the PRB set that PDSCH transmission is located, and/or, re-transmission PDSCH, and/or, the PDSCH of transmission on macrocell, using first kind DM-RS resource mapping method, in other cases, adopt Equations of The Second Kind DM-RS resource mapping method；Or,

Determine and meet in subframe number n（n-offset1）The PDSCH of transmission in the transmission subframe of modS1=0, and/or, In TDD special subframe（Or in specific special subframe, such as using the special subframe of conventional CP, or using expansion The special subframe of exhibition CP, or there is the special subframe of specific special subframe configuration）The PDSCH of middle transmission, and/or, The PDSCH of PBCH and/or synchronous transmission of signal is comprised in the PRB set that PDSCH transmission is located, and/or, the PDSCH of re-transmission, And/or, the PDSCH of transmission on macrocell, using first kind DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Determine and be unsatisfactory in subframe number n（n-offset1）The PDSCH of transmission in the transmission subframe of modS1=0, and/or, In TDD special subframe（Or in specific special subframe, such as using the special subframe of conventional CP, or using expansion The special subframe of exhibition CP, or there is the special subframe of specific special subframe configuration）The PDSCH of middle transmission, and/or, in bag The PDSCH of transmission in subframe containing PBCH and/or synchronous transmission of signal, and/or, the PDSCH of re-transmission, and/or, macrocell uploads Defeated PDSCH, using first kind DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS esource impact side Formula；Or,

Determine and be unsatisfactory in subframe number n（n-offset1）The PDSCH of transmission in the transmission subframe of modS1=0, and/ Or, in TDD special subframe（Or in specific special subframe, such as using the special subframe of conventional CP, or use The special subframe of extension CP, or there is the special subframe of specific special subframe configuration）The PDSCH of middle transmission, and/or, Comprise in PBCH and/or part PRB of synchronous transmission of signal in the PRB set that PDSCH transmission is located, and/or, re-transmission PDSCH, and/or, the PDSCH of transmission on macrocell, using first kind DM-RS resource mapping method, in other cases, adopt Equations of The Second Kind DM-RS resource mapping method；Or,

Determine and be unsatisfactory in subframe number n（n-offset1）The PDSCH of transmission in the transmission subframe of modS1=0, and/or, In TDD special subframe（Or in specific special subframe, such as using the special subframe of conventional CP, or using expansion The special subframe of exhibition CP, or there is the special subframe of specific special subframe configuration）The PDSCH of middle transmission, and/or, The PDSCH of PBCH and/or synchronous transmission of signal is comprised in the PRB set that PDSCH transmission is located, and/or, the PDSCH of re-transmission, And/or, the PDSCH of transmission on macrocell, using first kind DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；

Wherein, in above-mentioned various combined situation, S1 make an appointment or high-level signaling configuration for periodic quantity, offset1 For the subframe number deviant made an appointment or high-level signaling configures.

Further illustrate, can be defined as follows condition：

Condition 1：It is unsatisfactory in subframe number n（n-offset1）The PDSCH of transmission in the transmission subframe of modS1=0；Or,

Condition 1：It is unsatisfactory in subframe number n（n-offset1）The PDSCH of transmission in the transmission subframe of modS1=0；

Condition 2：The PDSCH of transmission in TDD special subframe；Or,

Condition 2：The PDSCH of transmission in specific TDD special subframe（Such as special son under conventional CP Special subframe under frame, or extension CP, or there is the special subframe of particular configuration）；Or,

Condition 3：The PDSCH of transmission in comprising the subframe of PBCH and/or synchronous transmission of signal；Or,

Condition 3：The PRB set that PDSCH transmission is located comprises in PBCH and/or part PRB of synchronous transmission of signal； Or,

Condition 3：The PDSCH of PBCH and/or synchronous transmission of signal is comprised in the PRB set that PDSCH transmission is located；

Condition 4：The PDSCH retransmitting；

Condition 5：PDSCH in macrocell；

Determine part PRB in PDSCH or PDSCH meeting above-mentioned at least one condition, using first kind DM-RS resource Mapping mode, in other cases, using Equations of The Second Kind DM-RS resource mapping method；For example：

Only meet the PDSCH of above-mentioned condition 1, using first kind DM-RS resource mapping method, in other cases, adopt Equations of The Second Kind DM-RS resource mapping method；Or,

Only meet the PDSCH of above-mentioned condition 2, using first kind DM-RS resource mapping method, in other cases, adopt Equations of The Second Kind DM-RS resource mapping method；Or,

Only meet part PRB in PDSCH or PDSCH of above-mentioned condition 3, using first kind DM-RS resource mapping method, In other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Only meet the PDSCH of above-mentioned condition 4, using first kind DM-RS resource mapping method, in other cases, adopt Equations of The Second Kind DM-RS resource mapping method；Or,

Only meet the PDSCH of above-mentioned condition 5, using first kind DM-RS resource mapping method, in other cases, adopt Equations of The Second Kind DM-RS resource mapping method；Or,

Meet part PRB in PDSCH or PDSCH of either condition in above-mentioned condition 1 and condition 2, using first kind DM- RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet part PRB in PDSCH or PDSCH of either condition in above-mentioned condition 1 and condition 3, using first kind DM- RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet part PRB in PDSCH or PDSCH of either condition in above-mentioned condition 1 and condition 4, using first kind DM- RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet part PRB in PDSCH or PDSCH of either condition in above-mentioned condition 1 and condition 5, using first kind DM- RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet part PRB in PDSCH or PDSCH of either condition in above-mentioned condition 2 and condition 3, using first kind DM- RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet part PRB in PDSCH or PDSCH of either condition in above-mentioned condition 2 and condition 4, using first kind DM- RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet part PRB in PDSCH or PDSCH of either condition in above-mentioned condition 2 and condition 5, using first kind DM- RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 1, condition 2, part PRB in PDSCH or PDSCH of either condition in condition 3, adopt first Class DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 1, condition 2, part PRB in PDSCH or PDSCH of either condition in condition 4, adopt first Class DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 1, condition 2, part PRB in PDSCH or PDSCH of either condition in condition 5, adopt first Class DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 2, condition 3, part PRB in PDSCH or PDSCH of either condition in condition 4, adopt first Class DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 2, condition 3, part PRB in PDSCH or PDSCH of either condition in condition 5, adopt first Class DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 3, condition 4, part PRB in PDSCH or PDSCH of either condition in condition 5, adopt first Class DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 1, condition 2, condition 3, part PRB in PDSCH or PDSCH of either condition in condition 4, adopt With first kind DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 1, condition 2, condition 3, part PRB in PDSCH or PDSCH of either condition in condition 5, adopt With first kind DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 1, condition 3, condition 4, part PRB in PDSCH or PDSCH of either condition in condition 5, adopt With first kind DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 2, condition 3, condition 4, part PRB in PDSCH or PDSCH of either condition in condition 5, adopt With first kind DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method；Or,

Meet above-mentioned condition 1, condition 2, condition 3, condition 4, the part in PDSCH or PDSCH of either condition in condition 5 PRB, using first kind DM-RS resource mapping method, in other cases, using Equations of The Second Kind DM-RS resource mapping method.

It should be noted that above-mentioned meet condition x（x=1~5）Under the various definitions mode that the condition x of referring to is comprised arbitrarily Condition x that a kind of definition mode determines）.

It should be noted that for multiple down channels of a UE, different down channels determine DM-RS esource impact side The method of formula can be different, and for example, E-PDCCH and PBCH, using the method for making an appointment, determines and always adopt first kind DM-RS to provide Source mapping mode, PDSCH can be using method of making an appointment, and the different preset rules situation according to meeting determines DM-RS Resource mapping method, or signaling configuration method can also be adopted, DM-RS resource mapping method is determined by configuration information.

Particularly, UE and network side can also be made an appointment, or by high-level signaling configuration determine for certain or The transmission subframe that all down channels impose a condition in satisfaction, does not carry out DM-RS esource impact.For example make an appointment or signaling is led to Know periodic quantity S2 and subframe number deviant offset2 value, meet the descending son of (n-offset2) modS2=0 in subframe number n DM-RS is not transmitted, the PDSCH in this subframe can be according in contiguous downstream subframe in the PRB that in frame, PDSCH transmission is located DM-RS demodulates.

Equations of The Second Kind DM-RS resource mapping method is to take resource with respect to first kind DM-RS resource mapping method DM-RS to subtract Few mapping mode, the present embodiment can determine Equations of The Second Kind DM-RS resource mapping method using following either type：

1）Truncate（shortened）DM-RS resource mapping method

Based on described first kind DM-RS resource mapping method, only DM-RS is mapped to described first kind DM-RS resource and reflects Penetrate in the part DM-RS resource on corresponding antenna port under mode, the time domain obtaining and/or frequency domain DM-RS resource truncate Resource mapping method.

Specifically, for the mode of time domain truncate, then described part DM-RS resource is：

In first kind DM-RS resource mapping method, in a subframe, comprise the OFDM that DM-RS maps resource DM-RS corresponding Resource Unit RE in OFDM symbol, in 2 adjacent OFDM symbol.First kind DM-RS resource mapping method In, comprise in a subframe in the OFDM of DM-RS, including the corresponding RE of DM-RS in 4 adjacent OFDM symbol, the present embodiment Only take the corresponding RE of DM-RS in wherein 2 adjacent OFDM symbol.

Specifically, as shown in Fig. 5 a, Fig. 5 b, only in the described OFDM comprising DM-RS, the adjacent OFDM symbol of the first two On the corresponding RE of DM-RS on map DM-RS；Or, as shown in Fig. 6 a, Fig. 6 b, Fig. 7 a, Fig. 7 b, only comprise DM-RS described OFDM in, on the corresponding RE of DM-RS in latter two adjacent OFDM symbol map DM-RS.Certainly, specific truncate mode Not limited to this, such as special subframe, on antenna port 7/8/11/13, only in the described OFDM comprising DM-RS, front DM-RS is mapped, on antenna port 9/10/12/14, only in institute on the corresponding RE of DM-RS in two adjacent OFDM symbol State in the OFDM comprising DM-RS, the corresponding RE of DM-RS in latter two adjacent OFDM symbol maps DM-RS.

For the mode of frequency domain truncate, then described part DM-RS resource is：In first kind DM-RS resource mapping method, one Comprise in individual subframe DM-RS map resource least one set numbering identical subcarrier on the corresponding RE of DM-RS, as Fig. 8 a ~ Shown in Fig. 8 b, part DM-RS resource is specifically, in first kind DM-RS resource mapping method, comprise 2 groups of DM-RS in each subframe The corresponding RE of DM-RS on numbering k identical subcarrier.

According in another embodiment of the present invention, can be combined using the esource impact that time domain and frequency domain truncate combine, I.e. the combination in any of above two mode, will not be described here.

2）The DM-RS resource mapping method of new definition.Meet the OFDM symbol comprising that in a subframe DM-RS maps resource Number number（I.e. time domain density）, less than the described OFDM symbol number in described first kind DM-RS resource mapping method, and/or Comprise DM-RS and map DM-RS corresponding RE number in the OFDM symbol of resource（I.e. frequency domain density）, less than described first kind DM- The resource mapping method redefining of the described RE number in RS resource mapping method

Preferably, the antenna port of the above-mentioned transmission DM-RS in the present embodiment is antenna port 7 ~ 14.

Based on same inventive concept, in the embodiment of the present invention, additionally provide a kind of user equipment (UE) and network side apparatus, by Similar in a kind of principle DM-RS special to downlink user transmission method of these device solve problems, the reality of therefore these devices Apply the enforcement of the method for may refer to, repeat no more in place of repetition.

User equipment (UE) provided in an embodiment of the present invention, as shown in figure 9, include：

Determining unit 901, for making an appointment according to described UE and network side, or the configuration being sent according to network side Information, determines the DM-RS resource mapping method that down channel adopts, and described DM-RS resource mapping method is divided into first kind DM-RS Resource mapping method and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource mapping method increases for Long Term Evolution DM-RS resource mapping method defined in strong LTE-A Rel-10 system, described Equations of The Second Kind DM-RS resource mapping method is relatively Take the mapping mode that resource reduces in described first kind DM-RS resource mapping method DM-RS；

Acquiring unit 902, for, in the transfer resource of described down channel, reflecting according to the DM-RS resource of described determination The mode of penetrating obtains DM-RS information.

Preferably, the configuration information that described determining unit sends according to network side, determines the DM-RS money that down channel adopts Source mapping mode, specifically includes：

Described configuration information indicates the DM-RS resource mapping method that described UE adopts, and according to described configuration information, determines institute The all down channels stating UE are all using described DM-RS resource mapping method；Or,

Comprise in described configuration information independently to indicate the configuration letter of the DM-RS resource mapping method of different down channels employings Breath, according to the corresponding configuration information of each down channel, determines that described down channel adopts first kind DM-RS resource mapping method Or Equations of The Second Kind DM-RS resource mapping method, or, determine described down channel in the subframe meeting condition and/or physical resource The one type DM-RS resource mapping method of described two class DM-RS resource mapping method is adopted, otherwise, using another in block PRB Class DM-RS resource mapping method, the described subframe meeting condition and/or PRB according in described configuration information with described descending letter The corresponding configuration information in road determines or the determination of making an appointment according to described UE and network side；Or,

Described configuration information only indicates the DM-RS resource mapping method that Physical Downlink Shared Channel PDSCH adopts, according to The corresponding configuration information of PDSCH, determines that PDSCH adopts first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS esource impact Mode, or, determine that PDSCH adopts described two class DM-RS resource mapping method in the subframe meeting condition and/or PRB One type DM-RS resource mapping method, otherwise, using another kind of DM-RS resource mapping method, the described subframe meeting condition And/or PRB determines or the determination of making an appointment according to described UE and network side according to the corresponding configuration information of institute PDSCH.

Preferably, described determining unit is passed through physical downlink control channel PDCCH signaling, is strengthened Physical Downlink Control Channel At least one signaling in E-PDCCH signaling, media access control MAC signaling, radio resource control RRC signaling is joined described in receiving Confidence ceases.

Preferably, described determining unit making an appointment according to UE and network side, determines the DM-RS money that down channel adopts Source mapping mode, specifically includes：

Determine that E-PDCCH adopts first kind DM-RS resource mapping method；And/or,

Determine that Physical Broadcast Channel PBCH adopts first kind DM-RS resource mapping method；And/or,

Determine that PDSCH adopts Equations of The Second Kind DM-RS resource mapping method in all transmission subframes of described PDSCH, or, Using one type DM- of described two class DM-RS resource mapping method in meeting the transmission subframe imposing a condition and/or PRB RS resource mapping method, otherwise, using another kind of DM-RS resource mapping method.

Preferably, described determining unit determines that PDSCH adopts institute in meeting the transmission subframe imposing a condition and/or PRB State the one type DM-RS resource mapping method of two class DM-RS resource mapping method, otherwise, reflected using another kind of DM-RS resource Penetrate mode, specifically include：

Determine that PDSCH meets in subframe number n（n-offset1）In the transmission subframe of modS1=0, using Equations of The Second Kind DM- RS resource mapping method, in other transmission subframes, using first kind DM-RS resource mapping method；Or,

Determine that PDSCH meets in subframe number n（n-offset1）First kind DM- is adopted in the transmission subframe of modS1=0 RS resource mapping method, adopts Equations of The Second Kind DM-RS resource mapping method in other transmission subframes；

Wherein, S1 be make an appointment or high-level signaling configuration periodic quantity, offset1 is to make an appointment or high-rise letter The subframe number deviant of order configuration.

Determine PDSCH in TDD special subframe, using first kind DM-RS resource mapping method, in other biographies In defeated subframe, using Equations of The Second Kind DM-RS resource mapping method；Or,

Determine PDSCH in the TDD special subframe using conventional cyclic prefix CP, using first kind DM-RS esource impact Mode, in other transmission subframes, using Equations of The Second Kind DM-RS resource mapping method；Or,

Determine PDSCH in the TDD special subframe using extension CP, using first kind DM-RS resource mapping method, at it He transmits in subframe, using Equations of The Second Kind DM-RS resource mapping method.

Determine that PDSCH adopts first kind DM-RS in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal Resource mapping method, adopts Equations of The Second Kind DM-RS resource mapping method in other PDSCH transmission subframes；Or,

Determine PDSCH in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal, be located in PDSCH transmission PRB set in comprise in the PBCH and/or PRB of synchronous transmission of signal, using first kind DM-RS resource mapping method, in institute State in the remaining PRB in PRB set or do not comprise, in PBCH and/or the PDSCH transmission subframe of synchronous transmission of signal, to adopt second Class DM-RS resource mapping method；Or,

Determine PDSCH in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal, be located in PDSCH transmission PRB set in when comprising the PRB that PBCH and/or synchronous transmission of signal are located, using first kind DM-RS resource mapping method, Described PRB set does not comprise during the PRB that PBCH and/or synchronous transmission of signal be located or do not comprising PBCH and/or synchronization In the PDSCH transmission subframe of signal transmission, using Equations of The Second Kind DM-RS resource mapping method.

Determine PDSCH in the re-transmission subframe of described PDSCH, using first kind DM-RS resource mapping method, described In the first biography subframe of PDSCH, using Equations of The Second Kind DM-RS resource mapping method.

Preferably, determining unit making an appointment according to user equipment (UE) and network side, determines the DM- that down channel adopts RS resource mapping method, specifically includes：

Determine that PDSCH adopts first kind DM-RS resource mapping method in the described PDSCH transmission subframe on macrocell.

Preferably, the Equations of The Second Kind DM-RS resource mapping method of described determining unit determination is：

Based on described first kind DM-RS resource mapping method, only DM-RS is mapped to described first kind DM-RS resource and reflects Penetrate in the part DM-RS resource on corresponding antenna port under mode, the time domain obtaining and/or frequency domain DM-RS resource truncate Resource mapping method；Or,

Meet and comprise DM-RS in a subframe and map the orthogonal frequency division multiplex OFDM symbol numbers of resource to be less than described the Described OFDM symbol number in one class DM-RS resource mapping method, and/or comprise DM-RS map resource OFDM symbol on DM-RS corresponding Resource Unit RE number is less than the described RE number in described first kind DM-RS resource mapping method again The resource mapping method of definition.

Preferably, described part DM-RS resource is：

In described first kind DM-RS resource mapping method, in a subframe, comprise the OFDM symbol that DM-RS maps resource In, the corresponding RE of DM-RS in 2 adjacent OFDM symbol, and/or, comprise in a subframe that DM-RS maps resource at least one The corresponding RE of DM-RS on group # identical subcarrier.

The embodiment of the present invention also provides a kind of network side apparatus, as shown in Figure 10, including：

Determining unit 101, for determining the DM-RS resource mapping method that down channel adopts, described DM-RS esource impact Mode is divided into first kind DM-RS resource mapping method and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource Mapping mode strengthens the DM-RS resource mapping method defined in LTE-ARel-10 system, described Equations of The Second Kind DM- for Long Term Evolution RS resource mapping method is to take, with respect to described first kind DM-RS resource mapping method DM-RS, the mapping mode that resource reduces；

Transmission unit 102, for, in the transfer resource of described down channel, reflecting according to the DM-RS resource of described determination The mode of penetrating carries out DM-RS esource impact and transmission.

Preferably, described determining unit determines the DM-RS resource mapping method that down channel adopts, and specifically includes：

According to transmission conditions and/or transmission demand, determine down channel adopt DM-RS resource mapping method, and to Family equipment UE sends the configuration information for indicating DM-RS resource mapping method；Or,

According to making an appointment of network side apparatus and user equipment (UE), determine the DM-RS esource impact that down channel adopts Mode.

Preferably, described determining unit, according to transmission conditions and/or transmission demand, determines the DM-RS that down channel adopts Resource mapping method, and send the configuration information for indicating DM-RS resource mapping method to user equipment (UE), specifically include：

Determine that all down channels of described UE adopt first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS resource Mapping mode, and the configuration information of the DM-RS resource mapping method for indicating described determination is sent to described UE；Or,

For each down channel, determine that described down channel adopts first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS resource mapping method, or, determine that described down channel is adopted in the subframe meeting condition and/or Physical Resource Block PRB With the one type DM-RS resource mapping method of described two class DM-RS resource mapping method, otherwise, using another kind of DM-RS money Source mapping mode, and to described UE send configuration information, comprise in described configuration information independently to indicate that different down channels adopt DM-RS resource mapping method configuration information, the described subframe meeting condition and/or PRB are that described determining unit determines And by configuration information corresponding with described down channel in described configuration information notify to described UE or be according to network side fill Put and the determination of making an appointment of described UE；Or,

Determine that Physical Downlink Shared Channel PDSCH adopts first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS resource Mapping mode, or, determine that PDSCH adopts described two class DM-RS esource impact sides in the subframe meeting condition and/or PRB The one type DM-RS resource mapping method of formula, otherwise, using another kind of DM-RS resource mapping method, and sends to described UE Configuration information, described configuration information only indicates the DM-RS resource mapping method that PDSCH adopts, the described subframe meeting condition and/ Or PRB is that described determining unit determines and notifies to described UE by described configuration information or be according to network side apparatus and institute State the determination of making an appointment of UE.

Preferably, described determining unit is passed through physical downlink control channel PDCCH signaling, is strengthened Physical Downlink Control Channel At least one signaling in E-PDCCH signaling, media access control MAC signaling, radio resource control RRC signaling, to described UE Send described configuration information.

Preferably, described determining unit making an appointment according to network side apparatus and user equipment (UE), determines down channel Using DM-RS resource mapping method, specifically include：

Determine PDSCH in all transmission subframes of described PDSCH, using Equations of The Second Kind DM-RS resource mapping method, or Person, in meeting the transmission subframe imposing a condition and/or PRB, using the one type of described two class DM-RS resource mapping method DM-RS resource mapping method, otherwise, using another kind of DM-RS resource mapping method.

Preferably, described determining unit determines PDSCH in meeting the transmission subframe imposing a condition and/or PRB, using institute State the one type DM-RS resource mapping method of two class DM-RS resource mapping method, otherwise, reflected using another kind of DM-RS resource Penetrate mode, specifically include：

Determine that PDSCH meets in subframe number n（n-offset1）In the transmission subframe of modS1=0, using first kind DM- RS resource mapping method, in other transmission subframes, using Equations of The Second Kind DM-RS resource mapping method；

Determine that PDSCH adopts first kind DM-RS in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal Resource mapping method, adopts Equations of The Second Kind DM-RS resource mapping method in other transmission subframes；Or,

Determine PDSCH in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal, only in PDSCH transmission institute PRB set in comprise in the PBCH and/or PRB of synchronous transmission of signal, using first kind DM-RS resource mapping method, Do not comprise in PBCH and/or the PDSCH transmission subframe of synchronous transmission of signal in remaining PRB in described PRB set or, adopt the Two class DM-RS resource mapping method；Or,

Determine PDSCH in the described PDSCH transmission subframe on macrocell, using first kind DM-RS resource mapping method.

Preferably, the described Equations of The Second Kind DM-RS resource mapping method of described determining unit determination is：

Preferably, described part DM-RS resource is：

In first kind DM-RS resource mapping method, comprise in the OFDM symbol that DM-RS maps resource in a subframe, 2 The corresponding RE of DM-RS in adjacent OFDM symbol, and/or, comprise the least one set numbering that DM-RS maps resource in a subframe The corresponding RE of DM-RS on identical subcarrier.

The embodiment of the present invention also provides a kind of downlink user dedicated demodulation reference signal DM-RS Transmission system, including：Above-mentioned User equipment (UE) and network side apparatus that embodiment provides.

Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program Product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or the reality combining software and hardware aspect Apply the form of example.And, the present invention can be using in one or more computers wherein including computer usable program code Usable storage medium（Including but not limited to disk memory, CD-ROM, optical memory etc.）The computer program of upper enforcement produces The form of product.

The present invention is with reference to method according to embodiments of the present invention, equipment（System）, and computer program flow process Figure and/or block diagram are describing.It should be understood that can be by each stream in computer program instructions flowchart and/or block diagram Flow process in journey and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided The processor instructing general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device is to produce A raw machine is so that produced for reality by the instruction of computer or the computing device of other programmable data processing device The device of the function of specifying in present one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.

These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing device with spy Determine in the computer-readable memory that mode works so that the instruction generation inclusion being stored in this computer-readable memory refers to Make the manufacture of device, this command device realize in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or The function of specifying in multiple square frames.

These computer program instructions also can be loaded in computer or other programmable data processing device so that counting On calculation machine or other programmable devices, execution series of operation steps to be to produce computer implemented process, thus in computer or On other programmable devices, the instruction of execution is provided for realizing in one flow process of flow chart or multiple flow process and/or block diagram one The step of the function of specifying in individual square frame or multiple square frame.

Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to including excellent Select embodiment and fall into being had altered and changing of the scope of the invention.

Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprise these changes and modification.

Claims

1. a kind of downlink user dedicated demodulation reference signal DM-RS transmission method is it is characterised in that include：

According to making an appointment of user equipment (UE) and network side, or the configuration information being sent according to network side, determine descending letter Road adopt DM-RS resource mapping method, described DM-RS resource mapping method be divided into first kind DM-RS resource mapping method and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource mapping method strengthens LTE-A Rel-10 for Long Term Evolution DM-RS resource mapping method defined in system, described Equations of The Second Kind DM-RS resource mapping method is with respect to the described first kind DM-RS resource mapping method DM-RS takies the mapping mode that resource reduces；

In the transfer resource of described down channel, the DM-RS resource mapping method according to described determination obtains DM-RS information；

Wherein, described Equations of The Second Kind DM-RS resource mapping method is：Based on described first kind DM-RS resource mapping method, only will DM-RS is mapped in the part DM-RS resource on corresponding antenna port under described first kind DM-RS resource mapping method, obtains The time domain arriving and/or the resource mapping method of frequency domain DM-RS resource truncate；Or, satisfaction comprises DM-RS in a subframe and reflects The orthogonal frequency division multiplex OFDM symbol numbers penetrating resource are less than the described OFDM symbol in described first kind DM-RS resource mapping method Number number, and/or comprise DM-RS and map DM-RS corresponding Resource Unit RE number in the OFDM symbol of resource to be less than described the The resource mapping method redefining of the described RE number in one class DM-RS resource mapping method；

Described part DM-RS resource is：In described first kind DM-RS resource mapping method, in a subframe, comprise DM-RS mapping In the OFDM symbol of resource, the corresponding RE of DM-RS in 2 adjacent OFDM symbol, and/or, comprise DM-RS in a subframe and reflect Penetrate the corresponding RE of DM-RS on the least one set numbering identical subcarrier of resource.

2. the method for claim 1 it is characterised in that according to network side send configuration information, determine down channel Using DM-RS resource mapping method, specifically include：

Described configuration information indicates the DM-RS resource mapping method that described UE adopts, and according to described configuration information, determines described UE All down channels all using described DM-RS resource mapping method；Or,

Comprise in described configuration information independently to indicate the configuration information of the DM-RS resource mapping method of different down channels employings, According to the corresponding configuration information of each down channel, determine described down channel adopt first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS resource mapping method, or, determine described down channel in the subframe meeting condition and/or Physical Resource Block The one type DM-RS resource mapping method of two class DM-RS resource mapping method is adopted, otherwise, using another kind of DM- in PRB RS resource mapping method, the described subframe meeting condition and/or PRB are according to corresponding with described down channel in described configuration information Configuration information determine or the determination of making an appointment according to described UE and network side；Or,

Described configuration information only indicates the DM-RS resource mapping method that Physical Downlink Shared Channel PDSCH adopts, according to PDSCH Corresponding configuration information, determines that PDSCH adopts first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS resource mapping method, Or, determine that PDSCH adopts wherein the one of described two class DM-RS resource mapping method in the subframe meeting condition and/or PRB Class DM-RS resource mapping method, otherwise, using another kind of DM-RS resource mapping method, the described subframe meeting condition and/or PRB determines or the determination of making an appointment according to described UE and network side according to the corresponding configuration information of institute PDSCH.

3. method as claimed in claim 1 or 2 is it is characterised in that described UE is believed by physical downlink control channel PDCCH Make, strengthen Physical Downlink Control Channel E-PDCCH signaling, media access control MAC signaling, in radio resource control RRC signaling At least one signaling receive described configuration information.

4. the method for claim 1, it is characterised in that making an appointment according to user equipment (UE) and network side, determines The DM-RS resource mapping method that down channel adopts, specifically includes：

Determine that PDSCH adopts Equations of The Second Kind DM-RS resource mapping method in all transmission subframes of described PDSCH, or, full Reflected using the one type DM-RS resource of two class DM-RS resource mapping method in the transmission subframe imposing a condition enough and/or PRB Penetrate mode, otherwise, using another kind of DM-RS resource mapping method.

5. method as claimed in claim 4 it is characterised in that determine PDSCH meet the transmission subframe that imposes a condition and/or The one type DM-RS resource mapping method of described two class DM-RS resource mapping method is adopted, otherwise, using another kind of in PRB DM-RS resource mapping method, specifically includes：

Determine that PDSCH meets in the transmission subframe of (n-offset1) modS1=0 in subframe number n, using Equations of The Second Kind DM-RS money Source mapping mode, in other transmission subframes, using first kind DM-RS resource mapping method；Or,

Determine that PDSCH meets in the transmission subframe of (n-offset1) modS1=0 using first kind DM-RS money in subframe number n Source mapping mode, in other transmission subframes, using Equations of The Second Kind DM-RS resource mapping method；

Wherein, S1 be make an appointment or high-level signaling configuration periodic quantity, offset1 is to make an appointment or high-level signaling is joined The subframe number deviant put.

6. method as claimed in claim 4 it is characterised in that determine PDSCH meet the transmission subframe that imposes a condition and/or The one type DM-RS resource mapping method of described two class DM-RS resource mapping method is adopted, otherwise, using another kind of in PRB DM-RS resource mapping method, specifically includes：

Determine that PDSCH adopts first kind DM-RS resource mapping method in TDD special subframe, in other transmission Equations of The Second Kind DM-RS resource mapping method is adopted in frame；Or,

Determine that PDSCH adopts first kind DM-RS resource mapping method in the TDD special subframe using conventional cyclic prefix CP, Adopt Equations of The Second Kind DM-RS resource mapping method in other transmission subframes；Or,

Determine that PDSCH adopts first kind DM-RS resource mapping method in the TDD special subframe using extension CP, in other biographies Equations of The Second Kind DM-RS resource mapping method is adopted in defeated subframe.

7. method as claimed in claim 4 it is characterised in that determine PDSCH meet the transmission subframe that imposes a condition and/or The one type DM-RS resource mapping method of described two class DM-RS resource mapping method is adopted, otherwise, using another kind of in PRB DM-RS resource mapping method, specifically includes：

Determine that PDSCH adopts first kind DM-RS resource in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal Mapping mode, adopts Equations of The Second Kind DM-RS resource mapping method in other PDSCH transmission subframes；Or,

Determine PDSCH in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal, be only located in PDSCH transmission Comprise in the PBCH and/or PRB of synchronous transmission of signal, using first kind DM-RS resource mapping method, described in PRB set PRB set in remaining PRB in or do not comprise in PBCH and/or the PDSCH transmission subframe of synchronous transmission of signal, using Equations of The Second Kind DM-RS resource mapping method；Or,

Determine PDSCH in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal, be located in PDSCH transmission When comprising, in PRB set, the PRB that PBCH and/or synchronous transmission of signal are located, using first kind DM-RS resource mapping method, Do not comprise PBCH in described PRB set and/or during PRB that synchronous transmission of signal is located or do not comprising PBCH and/or synchronous believing Number transmission PDSCH transmission subframe in, using Equations of The Second Kind DM-RS resource mapping method.

8. method as claimed in claim 4 it is characterised in that determine PDSCH meet the transmission subframe that imposes a condition and/or The one type DM-RS resource mapping method of described two class DM-RS resource mapping method is adopted, otherwise, using another kind of in PRB DM-RS resource mapping method, specifically includes：

Determine PDSCH in the re-transmission subframe of described PDSCH, using first kind DM-RS resource mapping method, in described PDSCH First biography subframe in, using Equations of The Second Kind DM-RS resource mapping method.

9. the method for claim 1, it is characterised in that making an appointment according to user equipment (UE) and network side, determines The DM-RS resource mapping method that down channel adopts, specifically includes：

10. a kind of downlink user dedicated demodulation reference signal DM-RS transmission method is it is characterised in that include：

Determine the DM-RS resource mapping method that down channel adopts, described DM-RS resource mapping method is divided into first kind DM-RS Resource mapping method and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource mapping method increases for Long Term Evolution DM-RS resource mapping method defined in strong LTE-A Rel-10 system, described Equations of The Second Kind DM-RS resource mapping method is relatively Take the mapping mode that resource reduces in described first kind DM-RS resource mapping method DM-RS；

In the transfer resource of described down channel, DM-RS resource is carried out according to the DM-RS resource mapping method of described determination and reflects Penetrate and transmit；

Described part DM-RS resource is：In first kind DM-RS resource mapping method, in a subframe, comprise DM-RS mapping resource OFDM symbol in, the corresponding RE of DM-RS in 2 adjacent OFDM symbol, and/or, comprise DM-RS mapping money in a subframe The corresponding RE of DM-RS on the least one set numbering identical subcarrier in source.

11. methods as claimed in claim 10 it is characterised in that described determination down channel adopt DM-RS esource impact Mode, specifically includes：

According to transmission conditions and/or transmission demand, determine the DM-RS resource mapping method that down channel adopts, and set to user Standby UE sends the configuration information for indicating DM-RS resource mapping method；Or,

According to making an appointment of network side and user equipment (UE), determine the DM-RS resource mapping method that down channel adopts.

12. methods as claimed in claim 11 it is characterised in that described according to transmission conditions and/or transmission demand, under determination The DM-RS resource mapping method that row channel adopts, and send for indicating joining of DM-RS resource mapping method to user equipment (UE) Confidence ceases, and specifically includes：

Determine that all down channels of described UE adopt first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS esource impact Mode, and the configuration information of the DM-RS resource mapping method for indicating described determination is sent to described UE；Or,

For each down channel, determine that described down channel adopts first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS Resource mapping method, or, determine that described down channel adopts two in the subframe meeting condition and/or Physical Resource Block PRB The one type DM-RS resource mapping method of class DM-RS resource mapping method, otherwise, using another kind of DM-RS esource impact side Formula, and to described UE send configuration information, comprise in described configuration information independently to indicate the DM-RS money that different down channels adopt That the configuration information of source mapping mode, the described subframe meeting condition and/or PRB determine for network side and by described configuration letter In breath, configuration information corresponding with described down channel notifies to described UE or is making an appointment according to network side and described UE Determine；Or,

Determine that Physical Downlink Shared Channel PDSCH adopts first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS esource impact Mode, or, determine that PDSCH adopts described two class DM-RS resource mapping method in the subframe meeting condition and/or PRB One type DM-RS resource mapping method, otherwise, using another kind of DM-RS resource mapping method, and to described UE send configuration Information, described configuration information only indicates the DM-RS resource mapping method that PDSCH adopts, the described subframe meeting condition and/or That PRB determines for network side and notify to described UE by described configuration information or be to be appointed with the pre- of described UE according to network side Fixed determination.

13. methods as described in claim 11 or 12 are it is characterised in that control letter PDCCH signaling, enhancing by physical down Physical down controls at least one in letter E-PDCCH signaling, media access control MAC signaling, radio resource control RRC signaling Signaling, sends described configuration information to described UE.

14. methods as claimed in claim 11 it is characterised in that making an appointment according to network side and user equipment (UE), really Determine the DM-RS resource mapping method of down channel employing, specifically include：

Determine PDSCH in all transmission subframes of described PDSCH, using Equations of The Second Kind DM-RS resource mapping method, or, Meet in the transmission subframe imposing a condition and/or PRB, using the one type DM-RS resource of two class DM-RS resource mapping method Mapping mode, otherwise, using another kind of DM-RS resource mapping method.

15. methods as claimed in claim 14 it is characterised in that determine PDSCH meet the transmission subframe that imposes a condition and/ Or in PRB, using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method, otherwise, using another One class DM-RS resource mapping method, specifically includes：

Determine that PDSCH meets in the transmission subframe of (n-offset1) modS1=0 in subframe number n, using first kind DM-RS money Source mapping mode, in other transmission subframes, using Equations of The Second Kind DM-RS resource mapping method；

Wherein, the periodic quantity that S1 makes an appointment or high-level signaling configures, offset1 is to make an appointment or high-level signaling configuration Subframe number deviant.

16. methods as claimed in claim 14 it is characterised in that determine PDSCH meet the transmission subframe that imposes a condition and/ Or in PRB, using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method, otherwise, using another One class DM-RS resource mapping method, specifically includes：

Determine that PDSCH adopts first kind DM-RS resource mapping method in TDD special subframe, in other transmission In frame, using Equations of The Second Kind DM-RS resource mapping method；Or,

Determine PDSCH in the TDD special subframe using conventional cyclic prefix CP, using first kind DM-RS resource mapping method, In other transmission subframes, using Equations of The Second Kind DM-RS resource mapping method；Or,

Determine PDSCH in the TDD special subframe using extension CP, using first kind DM-RS resource mapping method, in other biographies In defeated subframe, using Equations of The Second Kind DM-RS resource mapping method.

17. methods as claimed in claim 14 it is characterised in that determine PDSCH meet the subframe that imposes a condition and/or In PRB, using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method, otherwise, using another Class DM-RS resource mapping method, specifically includes：

Determine that PDSCH adopts first kind DM-RS resource in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal Mapping mode, adopts Equations of The Second Kind DM-RS resource mapping method in other transmission subframes；Or,

18. methods as claimed in claim 14 it is characterised in that determine PDSCH meet the transmission subframe that imposes a condition and/ Or in PRB, using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method, otherwise, using another One class DM-RS resource mapping method, specifically includes：

19. methods as claimed in claim 10 it is characterised in that making an appointment according to network side and user equipment (UE), really Determine the DM-RS resource mapping method of down channel employing, specifically include：

A kind of 20. user equipment (UE)s are it is characterised in that include：

Determining unit, for making an appointment according to described UE and network side, or the configuration information being sent according to network side, really Determine the DM-RS resource mapping method of down channel employing, described DM-RS resource mapping method is divided into first kind DM-RS resource to reflect Penetrate mode and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS resource mapping method strengthens LTE- for Long Term Evolution DM-RS resource mapping method defined in A Rel-10 system, described Equations of The Second Kind DM-RS resource mapping method is with respect to described First kind DM-RS resource mapping method DM-RS takies the mapping mode that resource reduces；

Acquiring unit, for, in the transfer resource of described down channel, obtaining according to the DM-RS resource mapping method of described determination Take DM-RS information；

Wherein, the Equations of The Second Kind DM-RS resource mapping method of described determining unit determination is：Based on described first kind DM-RS resource DM-RS is only mapped to the part on corresponding antenna port under described first kind DM-RS resource mapping method by mapping mode In DM-RS resource, the time domain obtaining and/or the resource mapping method of frequency domain DM-RS resource truncate；Or, meet in a son Comprise DM-RS in frame and map the orthogonal frequency division multiplex OFDM symbol numbers of resource less than described first kind DM-RS esource impact side Described OFDM symbol number in formula, and/or comprise DM-RS map resource OFDM symbol on the corresponding Resource Unit of DM-RS RE number is less than the resource mapping method redefining of the described RE number in described first kind DM-RS resource mapping method；

Wherein, described part DM-RS resource is：In described first kind DM-RS resource mapping method, in a subframe, comprise DM- RS maps in the OFDM symbol of resource, the corresponding RE of DM-RS in 2 adjacent OFDM symbol, and/or, comprise in a subframe DM-RS maps the corresponding RE of DM-RS on the least one set numbering identical subcarrier of resource.

21. UE as claimed in claim 20 it is characterised in that the configuration information that sent according to network side of described determining unit, Determine the DM-RS resource mapping method that down channel adopts, specifically include：

22. UE as described in claim 20 or 21 are it is characterised in that described determining unit passes through Physical Downlink Control Channel PDCCH signaling, enhancing Physical Downlink Control Channel E-PDCCH signaling, media access control MAC signaling, radio resource control RRC At least one signaling in signaling receives described configuration information.

23. UE as claimed in claim 20 it is characterised in that described determining unit making an appointment according to UE and network side, Determine the DM-RS resource mapping method that down channel adopts, specifically include：

24. UE as claimed in claim 23 are it is characterised in that described determining unit determines what PDSCH imposed a condition in satisfaction Using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method in transmission subframe and/or PRB, no Then, using another kind of DM-RS resource mapping method, specifically include：

Determine that PDSCH meets in the transmission subframe of (n-offset1) modS1=0 using first kind DM-RS money in subframe number n Source mapping mode, adopts Equations of The Second Kind DM-RS resource mapping method in other transmission subframes；

25. UE as claimed in claim 23 are it is characterised in that described determining unit determines what PDSCH imposed a condition in satisfaction Using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method in transmission subframe and/or PRB, no Then, using another kind of DM-RS resource mapping method, specifically include：

Determine PDSCH in TDD special subframe, using first kind DM-RS resource mapping method, in other transmission In frame, using Equations of The Second Kind DM-RS resource mapping method；Or,

26. UE as claimed in claim 23 are it is characterised in that described determining unit determines what PDSCH imposed a condition in satisfaction Using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method in transmission subframe and/or PRB, no Then, using another kind of DM-RS resource mapping method, specifically include：

Determine PDSCH in comprising the PDSCH transmission subframe of PBCH and/or synchronous transmission of signal, be located in PDSCH transmission Comprise in the PBCH and/or PRB of synchronous transmission of signal, using first kind DM-RS resource mapping method, described in PRB set PRB set in remaining PRB in or do not comprise in PBCH and/or the PDSCH transmission subframe of synchronous transmission of signal, using Equations of The Second Kind DM-RS resource mapping method；Or,

27. UE as claimed in claim 23 are it is characterised in that described determining unit determines what PDSCH imposed a condition in satisfaction Using the one type DM-RS resource mapping method of described two class DM-RS resource mapping method in transmission subframe and/or PRB, no Then, using another kind of DM-RS resource mapping method, specifically include：

28. UE as claimed in claim 20 are it is characterised in that determining unit is appointed with the pre- of network side according to user equipment (UE) Fixed, determine the DM-RS resource mapping method that down channel adopts, specifically include：

A kind of 29. network side apparatus are it is characterised in that include：

Determining unit, for determining the DM-RS resource mapping method that down channel adopts, described DM-RS resource mapping method is divided For first kind DM-RS resource mapping method and Equations of The Second Kind DM-RS resource mapping method, described first kind DM-RS esource impact side Formula strengthens the DM-RS resource mapping method defined in LTE-A Rel-10 system, described Equations of The Second Kind DM-RS resource for Long Term Evolution Mapping mode is to take, with respect to described first kind DM-RS resource mapping method DM-RS, the mapping mode that resource reduces；

Transmission unit, for, in the transfer resource of described down channel, entering according to the DM-RS resource mapping method of described determination Row DM-RS esource impact and transmission；

Wherein, the described Equations of The Second Kind DM-RS resource mapping method of described determining unit determination is：Based on described first kind DM-RS DM-RS is only mapped to the portion on corresponding antenna port under described first kind DM-RS resource mapping method by resource mapping method In point DM-RS resource, the time domain obtaining and/or the resource mapping method of frequency domain DM-RS resource truncate；Or, meet at one Comprise DM-RS in subframe and map the orthogonal frequency division multiplex OFDM symbol numbers of resource less than described first kind DM-RS esource impact Described OFDM symbol number in mode, and/or comprise DM-RS map resource OFDM symbol on DM-RS corresponding resource list First RE number is less than the esource impact side redefining of the described RE number in described first kind DM-RS resource mapping method Formula；

30. network side apparatus as claimed in claim 29 are it is characterised in that described determining unit determines what down channel adopted DM-RS resource mapping method, specifically includes：

According to making an appointment of network side apparatus and user equipment (UE), determine the DM-RS resource mapping method that down channel adopts.

31. network side apparatus as claimed in claim 30 it is characterised in that described determining unit according to transmission conditions and/or Transmission demand, determines the DM-RS resource mapping method that down channel adopts, and sends for indicating DM-RS to user equipment (UE) The configuration information of resource mapping method, specifically includes：

For each down channel, determine that described down channel adopts first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS Resource mapping method, or, determine that described down channel adopts two in the subframe meeting condition and/or Physical Resource Block PRB The one type DM-RS resource mapping method of class DM-RS resource mapping method, otherwise, using another kind of DM-RS esource impact side Formula, and to described UE send configuration information, comprise in described configuration information independently to indicate the DM-RS money that different down channels adopt The configuration information of source mapping mode, the described subframe meeting condition and/or PRB are that described determining unit determines and by described In configuration information, configuration information corresponding with described down channel notifies to described UE or is according to network side apparatus and described UE Determination of making an appointment；Or,

Determine that Physical Downlink Shared Channel PDSCH adopts first kind DM-RS resource mapping method or Equations of The Second Kind DM-RS esource impact Mode, or, determine that PDSCH adopts described two class DM-RS resource mapping method in the subframe meeting condition and/or PRB One type DM-RS resource mapping method, otherwise, using another kind of DM-RS resource mapping method, and to described UE send configuration Information, described configuration information only indicates the DM-RS resource mapping method that PDSCH adopts, the described subframe meeting condition and/or PRB be that described determining unit determines and by described configuration information notify to described UE or be according to network side apparatus with described The determination of making an appointment of UE.

32. network side apparatus as described in claim 30 or 31 are it is characterised in that described determining unit passes through physical down control Channel PDCCH signaling processed, enhancing Physical Downlink Control Channel E-PDCCH signaling, media access control MAC signaling, Radio Resource Control at least one signaling in RRC signaling, send described configuration information to described UE.

33. network side apparatus as claimed in claim 30 are it is characterised in that described determining unit is according to network side apparatus and use Making an appointment of family equipment UE, determines the DM-RS resource mapping method that down channel adopts, specifically includes：

34. network side apparatus as claimed in claim 33 are it is characterised in that described determining unit determines that PDSCH sets in satisfaction In the transmission subframe of fixed condition and/or PRB, the one type DM-RS resource using described two class DM-RS resource mapping method is reflected Penetrate mode, otherwise, using another kind of DM-RS resource mapping method, specifically include：

35. network side apparatus as claimed in claim 33 are it is characterised in that described determining unit determines that PDSCH sets in satisfaction In the transmission subframe of fixed condition and/or PRB, the one type DM-RS resource using described two class DM-RS resource mapping method is reflected Penetrate mode, otherwise, using another kind of DM-RS resource mapping method, specifically include：

36. network side apparatus as claimed in claim 33 are it is characterised in that described determining unit determines that PDSCH sets in satisfaction In the transmission subframe of fixed condition and/or PRB, the one type DM-RS resource using described two class DM-RS resource mapping method is reflected Penetrate mode, otherwise, using another kind of DM-RS resource mapping method, specifically include：

37. network side apparatus as claimed in claim 33 are it is characterised in that described determining unit determines that PDSCH sets in satisfaction In the transmission subframe of fixed condition and/or PRB, the one type DM-RS resource using described two class DM-RS resource mapping method is reflected Penetrate mode, otherwise, using another kind of DM-RS resource mapping method, specifically include：

38. network side apparatus as claimed in claim 29 are it is characterised in that described determining unit is according to network side apparatus and use Making an appointment of family equipment UE, determines the DM-RS resource mapping method that down channel adopts, specifically includes：

A kind of 39. downlink user dedicated demodulation reference signal DM-RS Transmission systems are it is characterised in that include：

User equipment (UE), for making an appointment according to described UE and network side, or the configuration information being sent according to network side, Determine the DM-RS resource mapping method that down channel adopts；In the transfer resource of described down channel, according to described determination DM-RS resource mapping method obtains DM-RS information；

Network side apparatus, for determining the DM-RS resource mapping method that down channel adopts；Transmission money in described down channel In source, DM-RS esource impact and transmission are carried out according to the DM-RS resource mapping method of described determination；

Described DM-RS resource mapping method is divided into first kind DM-RS resource mapping method and Equations of The Second Kind DM-RS esource impact side Formula, described first kind DM-RS resource mapping method strengthens the DM-RS resource defined in LTE-A Rel-10 system for Long Term Evolution Mapping mode, described Equations of The Second Kind DM-RS resource mapping method is with respect to described first kind DM-RS resource mapping method DM-RS Take the mapping mode that resource reduces.