CN103378962B

CN103378962B - A kind of transmission method and device of DRS

Info

Publication number: CN103378962B
Application number: CN201310053685.1A
Authority: CN
Inventors: 高雪娟; 林亚男; 沈祖康
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-04-12
Filing date: 2013-02-19
Publication date: 2017-03-29
Anticipated expiration: 2033-02-19
Also published as: WO2013152731A1; CN103378962A

Abstract

The invention discloses the transmission method and device of a kind of DRS.Its method includes：According to DRS antenna port p resource mapping method, it would be desirable to the DRS transmitted on antenna port p is mapped in descending sub frame for transmitting the RE of DRS；In same time slot position, in descending sub frame, it is used for the numbering of the OFDM symbol at the RE places for transmitting DRS, it is different from the numbering of the OFDM symbol that the RE for being used for synchronous signal transmission in synchronous transmission of signal subframe is located；The descending sub frame is transmitted by antenna port p.Due to ensure that DRS is not overlap with the mapping resource of synchronizing signal in descending sub frame.Therefore, for asynchronous NCT carrier waves, can in synchronous transmission of signal subframe simultaneous transmission DRS and downlink data, improve the down transmission efficiency of asynchronous NCT carrier waves.Again due to transmitting DRS in synchronous transmission of signal subframe, therefore can be based on normally receiving downlink data.

Description

A kind of transmission method and device of DRS

Technical field

The present invention relates to communication technical field, more particularly to a kind of transmission method and device of DRS.

Background technology

LTE-ACA is introduced：

In LTE-A（Long Term Evolution-Advanced, Long Term Evolution strengthen）In system, the peak value speed of system Rate compares LTE（Long Term Evolution, Long Term Evolution）System has huge raising, it is desirable to reach descending 1Gbps, up 500Mbps.If only the carrier wave using a maximum bandwidth for 20MHz is unable to reach peak-rate requirements.Therefore, LTE- A systems need to extend UE（User Equipment, also referred to as user equipment, terminal）The bandwidth that can be used, thus introduces CA （Carrier Aggregation, carrier aggregation）Technology, will same eNB（Base station）Under it is multiple continuous or discrete Carrier aggregation together, while service for UE, with the speed needed for providing.These carrier waves for condensing together are also called a CC （Component Carrier, member carrier）.Each cell can be a member carrier, the cell under different eNB（Into Member's carrier wave）Can not be polymerized.In order to ensure carrier operation that UE in LTE system can be polymerized at each, each carrier wave is maximum Less than 20MHz.

New wave-carring type introduction in LTE-A：

In order to further improve resource utilization ratio, LTE-A Rel-11 determine new for carrier aggregation system introducing Carrier type（Additional Carrier Type, ACT or New Carrier Type, NCT）, with strengthening system frequency spectrum profit With rate, preferably support heterogeneous network, reduce power consumption.Programme of work for NCT just under discussion, the conclusion bag for determining at present Include：

（1）Compression eliminates existing control signaling and/or CRS（Cell-specific ReferenceSignals are little Area's dedicated reference symbols）, only support on NCT with 5ms at present（Millisecond, millisecond）It it is the cycle in single antenna port（p=0） Transmission CRS, and CRS transmission is not used in the demodulation of downlink data transmission, and the measurement of correlation process being used on NCT carrier waves；NCT On downlink data transmission need to consider based on DRS（Downlink UE-specific Reference Signals, descending UE Dedicated reference symbol）It is demodulated.

（2）With a backward compatibility carrier wave associated working, in Rel-11 systems, wouldn't support that NCT carrier waves work independently.

（3）Support that two kinds of operative scenarios, scene of the first NCT carrier wave for sync carrier are come from the angle of receiving terminal See that NCT carrier waves are all synchronous in time domain and frequency domain with convention carrier, UE need not carry out single Time and Frequency Synchronization to NCT carrier waves Process.Its two be new type carrier wave be asynchronous carrier wave scene, i.e., from from the perspective of receiving terminal NCT carrier waves with tradition load There is certain deviation in ripple in time domain and frequency domain, UE needs to carry out NCT carrier waves single Time and Frequency Synchronization process, it is thus possible to Need to retain the PSS in Rel-8（Primary Synchronized Signal, master sync signal）And SSS（Secondary Synchronization Signal, auxiliary synchronous signals）Transmission.

Synchronizing signal introduction in LTE system：

PSS has the binary sequence that three length is 62, per 5ms transmission primarieses, in a radio frames former and later two half The sequence used by frame is identical, therefore can obtain 5ms timings by PSS.SSS is by the binary sequence that two length is 31 Merge after intertexture, and the scramble sequence indicated by PSS is scrambled.The two length are the conjunction of 31 binary sequence And mode field after front field with son is different, therefore 10ms timings can be obtained by SSS, that is, determine that the timing of radio frames rises Beginning position.

In frequency domain, PSS and SSS is only mapped on the subcarrier of centre 72 of system bandwidth（Centre is only mapped into actually On 62 subcarriers, the tone reservation at edge makees protection interval）, i.e., 6 RB in the middle of system bandwidth（Resource Block, Resource Block）On.In time domain, for the radio frames in frame structure Class1, i.e. FDD（Frequency Division Duplex, FDD）Radio frames in system, PSS are mapped to last OFDM of time slot 0 and time slot 10 （Orthogonal Frequency DivisionMultiplexing, OFDM）On symbol, SSS is mapped to time slot 0 In the penultimate OFDM symbol of time slot 10, as shown in Figure 1a；For the radio frames in frame structure type 2, i.e. TDD （Time Division Duplex, time division duplex）Radio frames in system, PSS are mapped to the 3rd of subframe 1 and subframe 6 In OFDM symbol, for TDD uplink/downlink of the downstream-to-upstream switching point cycle for 5ms is configured, such as configuration 0/1/2/6, subframe 1 All it is special subframe with subframe 6, for TDD uplink/downlink of the downstream-to-upstream switching point cycle for 10ms is configured, such as configuration 3/4/ 5, only subframe 1 is special subframe, and special subframe is by DwPTS（Downlink Pilot Time Slot, descending pilot frequency time slot）、GP （Guard Period, guard time）、UpPTS（Uplink Pilot Time Slot, uplink pilot time slot）3 parts are constituted, In i.e. one radio frames, PSS is at least mapped in the 3rd OFDM symbol of a DwPTS, and SSS is mapped to time slot 1 and time slot 11 Last OFDM symbol on, as shown in Figure 1 b.

DRS in lte-a system is introduced：

9 kinds of downlink transfer patterns defined in lte-a system.DRS is used for the signal solution for supporting downlink transfer mode 7 ~ 9 Adjust, and DRS is only in the PRB transmitted using downlink transfer mode 7 ~ 9（Physical Resource Block, Physical Resource Block） Upper transmission, to reduce the interference between reference markss expense, saving energy, reduction neighbor cell.Meanwhile, DRS can support 1 ~ 8 Antenna port is transmitted.If DRS supports single antenna port transmission, antenna port p=5, or antenna port p=are arranged respectively at 7, or antenna port p=8.If DRS supports multi-antenna port transmission, the antenna port set for transmitting DRS can be p =7 ..., ν+6.Wherein ν is PDSCH（Physical Downlink Shared Channel, Physical Downlink Shared Channel）Pass Defeated layer（Layer）Number.

DRS is identical in the mapping position of antenna port 7,8,11,13, mapped bits of the DRS in antenna port 9,10,12,14 Put identical, when DRS supports that multi-antenna port is transmitted, ensured between antenna port by the orthogonal sequence shown in Tables 1 and 2 Orthogonality.Conventional CP（Cyclic Prefix, Cyclic Prefix）Under, DRS supports to transmit in antenna port 5,7 ~ 14.Extension CP Under, DRS does not support to transmit in antenna port 9 ~ 14.

In antenna port set S, the RE of the DRS of same UE is directed to for transmission, it is impossible to transmit same time slot again PDSCH on any one antenna port, it is impossible to transmitted on any antenna port beyond the S of the same UE of same time slot again DRS.Wherein, S={ 7,8,11,13 } or S={ 9,10,12,14 }.

Table 1：Under conventional CP, the DRS orthogonal sequences of different antennae port

Table 2：Under extension CP, the DRS orthogonal sequences of different antennae port

The DRS of each antenna port transmission is mapped to the RE in a PRB（Resource Element, Resource Unit）Position Put and use DRS pattern（Pattern）Represent, then, as shown in Fig. 2 a ~ 3b, as should for the DRS pattern of an antenna port DRS resource mapping methods on antenna port.Wherein：

Shown in Fig. 2 a, under conventional CP, for the DRS pattern of antenna port 5.Wherein, R₅The blockage at place The RE that DRS is taken on the antenna port is represented, i.e., is used for transmitting the RE of DRS on the antenna port.

Shown in Fig. 2 b, under extension CP, for the DRS pattern of antenna port 5.Likewise, the little side that R5 is located Block represents the RE that DRS is taken on the antenna port.

Shown in Fig. 3 a, under conventional CP, for the DRS pattern and the DRS for antenna port 9 of antenna port 7 pattern.Wherein, when being configured to 1,2,6 or 7 for special subframe on the left of upper row, for the DRS pattern of antenna port 7；In When row left side is configured to 3,4 or 8 for special subframe, for the DRS pattern of antenna port 7；It is every other on the left of lower row Descending sub frame（Be also called conventional descending sub frame, can be TDD system conventional descending sub frame, or FDD system it is descending Descending sub frame in the conventional descending sub frame of subframe, wherein TDD system as TDD system in addition to special subframe）In, for The DRS pattern of antenna port 7；R in each DRS pattern₇The blockage at place represents that DRS is taken on the antenna port RE.When being configured to 1,2,6 or 7 for special subframe on the right side of upper row, for the DRS pattern of antenna port 9；On the right side of middle row it is When special subframe is configured to 3,4 or 8, for the DRS pattern of antenna port 9；It is every other descending sub frame on the right side of lower row In, for the DRS pattern of antenna port 9；R in each DRS pattern₉The blockage at place represents DRS in the antenna end The RE taken on mouth.For antenna port 8,11 and 13 DRS pattern be referred on the left of Fig. 3 a shown in for antenna end The DRS pattern of mouth 7（I.e. with the DRS pattern of antenna port 7）, for the DRS of antenna port 10,12 and 14 Pattern is referred to the shown DRSpattern for antenna port 9 on the right side of Fig. 3 a（I.e. with the DRS of antenna port 9 pattern）.

Shown in Fig. 3 b, under extension CP, for the DRS pattern of antenna port 7, shown on wherein Fig. 3 b is special When different sub-frame configuration is 1,2,3,5 or 6, for the DRS pattern of antenna port 7；Under Fig. 3 b shown in be every other under Row subframe（It is also called conventional descending sub frame）In, for the DRS pattern of antenna port 7；R in each DRS pattern₇It is located Blockage represent RE that DRS is taken on the antenna port.Fig. 3 b are referred to for the DRS pattern of antenna port 8 The shown DRS pattern for antenna port 7（I.e. with the DRS pattern of antenna port 7）.

The downlink reception mode of lte-a system：

For FDD LTE radio frames：In the PDCCH using routine CP（Physical Downlink Control Channel, Physical Downlink Control Channel）Take in the subframe of 4 OFDM symbols, UE will not receive PDSCH in antenna port 5； If PRB centerings have a PRB in frequency and PBCH（Physical Broadcast Channel, Physical Broadcast Channel）Or There is aliasing in same subframe in the RE that person PSS or SSS take, UE will not in antenna port 5,7,8,9,10,11,12, 13 or 14 receive PDSCHs of the PRB to carrying；If adopting VRB（Virtual Resource Block, discrete virtual physics Resource Block）Resource allocation, UE will not receive PDSCH in antenna port 7；If UE does not receive the corresponding all RB of PDSCH, UE May skip to the TB（Transport Block, transmission block）Decoding, and physical layer is notified that the high level TB without success Decoding.

For TDD LTE radio frames：In the subframe of PDCCH 4 OFDM symbols of occupancy using routine CP, UE will not be Antenna port 5 receives PDSCH；If the resource that PRB centerings have a PRB in frequency and PBCH takes is in same subframe Generation aliasing, UE will not receive PDSCHs of this PRB to carrying in antenna port 5；If PRB centerings have a PRB in frequency There is aliasing in the RE that upper and PSS or SSS takes in same subframe, UE will not be in antenna port 7,8,9,10,11,12,13 Or 14 receive the PRB to carry PDSCH；Under conventional CP configurations, in the special subframe using configuration 1 and 6, if adopted VRB resource allocations, UE will not receive PDSCH in antenna port 5；If adopting VRB resource allocations, UE will not be in antenna port 7 Receive PDSCH；If UE does not receive the corresponding all RB of PDSCH, UE may skip the decoding to the TB, and physical layer meeting Notify that the high level TB does not have decoding success.

Limited based on above-mentioned FDD and TDD esource impacts, it is for NCT carrier waves, Chong Die with PSS and SSS mappings resource in DRS Descending sub frame in, to carry and can not transmit DRS on the RB that 72 subcarriers are located in the middle of the system of PSS and SSS, entered based on DRS The PDSCH of row demodulation can not be transmitted in these RB.But in LTE-A Rel-8/9/10 systems, the PDSCH in these RB Can be demodulated by CRS.Additionally, in LTE-ARel-8/9/10 systems, PBCH, PDCCH, PCFICH（Physical Control Format Indicator Channel, Physical Control Format Indicator Channel）、PHICH（Physical Hybrid- ARQ Indicator Channel, Physical HARQ Indicator Channel）Demodulation Deng down channel is also all based on what CRS was carried out. In Rel-11, the CRS on NCT carrier waves is not used in the demodulation of downlink data transmission, can only be demodulated by DRS, can not On the RB of transmission DRS, be carried on downlink data in above-mentioned various down channels also just cannot normal transmission, so as to reduce NCT The down transmission efficiency of carrier wave.

The content of the invention

It is an object of the invention to provide the transmission method and device of a kind of DRS, to solve to carry synchronizing signal in NCT carrier waves Subcarrier be located RB cannot be used for transmit DRS caused by the low problem of down transmission efficiency.

The purpose of the present invention is achieved through the following technical solutions：

A kind of transmission method of DRS, including：

According to DRS antenna port p resource mapping method, it would be desirable under the DRS transmitted on antenna port p is mapped to It is used for transmitting the RE of DRS in row subframe；In same time slot position, what the RE in the descending sub frame for transmitting DRS was located It is used for the numbering of OFDM symbol at the RE places of synchronous signal transmission in the numbering of OFDM symbol, with synchronous transmission of signal subframe not Together；

The descending sub frame is transmitted by the antenna port p.

A kind of transmission method of DRS, including：

Descending sub frame is received by antenna port p；

According to DRS in the resource mapping method of antenna port p, it is used to transmit obtain on the RE of DRS in the descending sub frame Take DRS；In same time slot position, it is used for transmitting in the descending sub frame numbering of the OFDM symbol that the RE of DRS is located, it is and synchronous The numbering for being used for the OFDM symbol at the RE places of synchronous signal transmission in signal transmission subframe is different.

A kind of transmitting device of DRS, including：

Resource mapping module, for according to DRS antenna port p resource mapping method, it would be desirable on antenna port p The DRS of transmission is used for transmitting the RE of DRS in being mapped to descending sub frame；In same time slot position, it is used in the descending sub frame RE in the numbering of the OFDM symbol that the RE of transmission DRS is located, with synchronous transmission of signal subframe for synchronous signal transmission is located OFDM symbol numbering it is different；

Data transmission module, for transmitting the descending sub frame by the antenna port p.

A kind of transmitting device of DRS, including：

Data reception module, for receiving descending sub frame by antenna port p；

Descending reference symbol acquisition module, for according to DRS antenna port p resource mapping method, described descending It is used to transmit in subframe obtain on the RE of DRS DRS；In same time slot position, it is used for transmitting the RE institutes of DRS in the descending sub frame OFDM symbol numbering, with synchronous transmission of signal subframe in for synchronous signal transmission RE be located OFDM symbol volume It is number different.

By method and device provided in an embodiment of the present invention, due to, in same time slot position, being used in descending sub frame RE in the numbering of the OFDM symbol that the RE of transmission DRS is located, with synchronous transmission of signal subframe for synchronous signal transmission is located OFDM symbol numbering difference, it is ensured that in descending sub frame, DRS is not overlap with the mapping resource of synchronizing signal.Therefore, for Asynchronous NCT carrier waves, during using technical scheme provided in an embodiment of the present invention, can be in synchronous transmission of signal subframe simultaneously Transmission DRS and downlink data, improve the down transmission efficiency of asynchronous NCT carrier waves.Again as the embodiment of the present invention is same DRS can be transmitted in step signal transmission subframe, therefore downlink data can be normally received based on DRS.

Description of the drawings

Fig. 1 a are synchronizing signal mapping position schematic diagram in FDD LTE radio frames；

Fig. 1 b are synchronizing signal mapping position schematic diagram in TDD LTE radio frames；

Fig. 2 a are DRS pattern of the descending sub frame in antenna port 5 under routine CP；

Fig. 2 b are DRS pattern of the descending sub frame in antenna port 5 under extension CP；

Fig. 3 a are DRS pattern of the descending sub frame in antenna port 7 and antenna port 9 under routine CP；

Fig. 3 b are DRS pattern of the descending sub frame in antenna port 7 under extension CP；

Fig. 4 is a kind of method flow diagram provided in an embodiment of the present invention；

Fig. 5 a are punching DRS pattern of the FDD system descending sub frame in antenna port 5 under routine CP；

Fig. 5 b are punching DRS pattern of the FDD system descending sub frame in antenna port 5 under extension CP；

Fig. 6 a are punching DRSpattern of the FDD system descending sub frame in antenna port 7～14 under routine CP；

Fig. 6 b are punching DRSpattern of the FDD system descending sub frame in antenna port 7～14 under extension CP；

When Fig. 7 a are to delete the DRS mapping relations in a punching OFDM symbol, under conventional CP, TDD system is routinely descending Punching DRS pattern of the subframe in antenna port 7～14；

When Fig. 7 b are to delete the DRS mapping relations in two punching OFDM symbols, under conventional CP, TDD system is routinely descending Punching DRS pattern of the subframe in antenna port 7～14；

When Fig. 8 a are to delete the DRS mapping relations in a punching OFDM symbol, under conventional CP, TDD system special subframe Punching DRS pattern of the configuration 3/4/8 in antenna port 7～14；

When Fig. 8 b are to delete the DRS mapping relations in two punching OFDM symbols, under conventional CP, TDD system special subframe Punching DRS pattern of the configuration 3/4/8 in antenna port 7～14；

When Fig. 9 a are to delete the mapping relations in a punching OFDM symbol, under conventional CP, the configuration of TDD system special subframe 1/2/6/7 antenna port 7～14 punching DRS pattern；

When Fig. 9 b are to delete the DRS mapping relations in two punching OFDM symbols, under conventional CP, TDD system special subframe Punching DRS pattern of the configuration 1/2/6/7 in antenna port 7～14；

Figure 10 a are new DRS pattern of the descending sub frame in antenna port 5 under routine CP；

Figure 10 b are new DRS pattern of the descending sub frame in antenna port 5 under extension CP；

Figure 11 a are new DRS pattern of the conventional subframe in antenna port 7～14 under routine CP；

Figure 11 b are new DRS pattern of the conventional subframe in antenna port 7～14 under extension CP；

Figure 12 a are under routine CP, and it is new at first of antenna port 7～14 that TDD system special subframe configures 1/2/6/7 DRS pattern；

Figure 12 b are under routine CP, and it is new at second of antenna port 7 ~ 14 that TDD system special subframe configures 1/2/6/7 DRS pattern；

Figure 12 c are under routine CP, and it is new at the 3rd of antenna port 7 ~ 14 that TDD system special subframe configures 1/2/6/7 DRS pattern；

Figure 12 d are under routine CP, and it is new at first of antenna port 7～14 that TDD system special subframe configures 3/4/8 DRS pattern；

Figure 12 e are second new DRS of the TDD system special subframe configuration 3/4/8 in antenna port 7 ~ 14 under routine CP pattern；

Figure 12 f are three new DRS of the TDD system special subframe configuration 3/4/8 in antenna port 7 ~ 14 under routine CP pattern；

Figure 12 g are for, under extension CP, TDD system special subframe configuration 1/2/3/5/6 is new at first of antenna port 7 ~ 14 DRS pattern；

Figure 12 h are for, under extension CP, TDD system special subframe configuration 1/2/3/5/6 is new at second of antenna port 7 ~ 14 DRS pattern；

Figure 13 is another kind of method flow diagram provided in an embodiment of the present invention；

Figure 14 is network side apparatus structural representation provided in an embodiment of the present invention；

Figure 15 is a kind of UE sides apparatus structure schematic diagram provided in an embodiment of the present invention；

Figure 16 is another kind of UE sides apparatus structure schematic diagram provided in an embodiment of the present invention.

Specific embodiment

Based on asynchronous NCT carrier waves specified in LTE Rel11, the invention provides a kind of DRS is located in its transmission Antenna port on resource mapping method, its main thought is：DRS be mapped in synchronizing signal occupancy RE beyond RE on, To support DRS and synchronizing signal simultaneous transmission in same descending sub frame.In the embodiment of the present invention, synchronizing signal refers to PSS/ SSS。

In eNB sides, a kind of transmission method of DRS provided in an embodiment of the present invention is as shown in figure 4, specifically include following behaviour Make：

Step 100, according to DRS antenna port p resource mapping method, it would be desirable to the DRS transmitted on antenna port p It is used for transmitting the RE of DRS in being mapped to descending sub frame；In same time slot position, it is used for transmitting DRS's in above-mentioned descending sub frame The OFDM symbol being located for the RE of synchronous signal transmission in the numbering of the OFDM symbol that RE is located, with synchronous transmission of signal subframe Numbering it is different；

Wherein, for FDD system, synchronous transmission of signal subframe refers to subframe 0 and subframe 5 in radio frames, specifically includes： PSS is in time slot 0（That is first time slot of subframe 0）With time slot 10（That is first time slot of subframe 5）Last OFDM accord with Transmit on number, SSS is transmitted in the penultimate OFDM symbol of time slot 0 and time slot 10；For TDD system, synchronizing signal is passed Defeated subframe refers to subframe 0 and subframe 5 in radio frames, and subframe 1 and subframe 6, specifically includes：PSS is in subframe 1（Special son Frame）With subframe 6（May be special subframe, it is also possible to for conventional subframe, configure depending on TDD uplink/downlink）The 3rd OFDM Transmit on symbol, SSS is in time slot 1（That is second time slot of subframe 0）With time slot 11（That is second time slot of subframe 5）It is last Transmit in one OFDM symbol.Other synchronous transmission of signal subframes and OFDM beyond being not excluded for above-mentioned subframe and OFDM definition Symbol definition.

In the embodiment of the present invention, DRS can both be existing LTE-A communications mark in the resource mapping method of antenna port p The DRS of DRS pattern, or new definition shown in the DRS pattern defined in standard, such as Fig. 2 a ~ Fig. 3 b is in day The resource mapping method of line end mouth p.If newly defining DRS in the resource mapping method of antenna port P, need to meet in synchronizing signal In the same time slot position of transmission subframe, the OFDM symbol numbering that the RE for transmitting DRS is located, and for synchronous signal transmission The OFDM symbol numberings that are located of RE it is different.Wherein, above-mentioned same time slot position, specifically refers to institute in any one descending sub frame Comprising multiple time slots（2）Time slot, the relative position in a descending sub frame, the relative position can be described as under one Previous time slot position in row subframe, or it is for latter time slot position in a descending sub frame or descending for one First time slot position in subframe, or for second time slot position in a descending sub frame, or be a descending son Numbering in frame is the time slot position of odd number, or for time slot position that the numbering in a descending sub frame is even number.For example, it is right In FDD system, transmit in most latter two OFDM symbol of synchronizing signal time slot 0 in a radio frame and time slot 10, i.e., often Under rule CP, it is the previous of descending sub frame 0 and 5（First or numbering be even number）Numbering l=5 in time slot position and 6 OFDM symbol, under extension CP, is the previous of descending sub frame 0 and 5（First or numbering be even number）In time slot position Numbering l=4 and 5 OFDM symbol, then, in any one descending sub frame when antenna port p is transmitted, DRS is in antenna port for DRS The resource mapping method of p needs to meet：In the descending sub frame, the OFDM symbol that the RE of DRS is located is transmitted（DRS mappings OFDM symbol）Can not be the previous of the descending sub frame（First or numbering be even number）Under conventional CP in time slot position Numbering l=5 and 6 OFDM symbol on, extend CP under numbering l=4 and 5 OFDM symbol on.Wherein, OFDM symbol is opened from l=0 Begin numbering.

Step 110, the descending sub frame is transmitted by above-mentioned antenna port p.

As DRS is and downlink data simultaneous transmission, therefore, downlink data is also transmitted in above-mentioned descending sub frame, is had Body：（One）In the RB that the downlink data transmission of above-mentioned each time slot of descending sub frame is located for transmitting the RE of DRS beyond Downlink data is mapped on RE；Or,（Two）It is used in the RB that the downlink data transmission of above-mentioned each time slot of descending sub frame is located Transmission DRS RE beyond RE and with synchronous transmission of signal subframe in for synchronous signal transmission RE positions identical RE with On outer RE, downlink data is mapped.For（Two）Downlink data mapping mode is planted, can be only for synchronous transmission of signal No matter whether frame, or the descending sub frame are synchronous transmission of signal subframe, all under above-mentioned descending sub frame each time slot For transmitting RE beyond the RE of DRS and same for transmitting with synchronous transmission of signal subframe in the RB that row data transfer is located On RE beyond RE positions identical RE of step signal, downlink data is mapped（I.e. even if there be no synchronous letter in the descending sub frame Number transmission, but downlink data will not also be mapped in its scheduling RB in RE location overlaps corresponding with synchronizing signal part, example Will not such as be mapped in current downlink subframe corresponding in its same time slot position transmitted in subframe with synchronizing signal In the numbering identical OFDM symbol of OFDM symbol, the portion Chong Die with the RB of centre 6 of system descending bandwidth in the RB of its scheduling Point）.If supporting the downlink data transmission of multi-antenna port, further, esource impact sides of the DRS on each antenna port Downlink data is not mapped on the RE for transmitting DRS that formula is indicated.In the embodiment of the present invention, downlink data includes, is carried on PDSCH、PBCH、PDCCH（Including e-PDCCH, i.e., enhanced PDCCH）, in the down channel such as PCFICH, and/or PHICH under Row data.

If other descending reference symbols are also transmitted in above-mentioned descending sub frame, then what the embodiments of the present invention were provided In method, further, in same time slot position, in the descending sub frame, it is used for the volume of the OFDM symbol at the RE places for transmitting DRS Number, with other descending reference symbol transmission subframes in for transmit other descending reference symbols RE be located OFDM symbol volume It is number also different.Other descending reference symbols include CRS, PRS（Positioning reference markss）、CSI-RS（Channel State Information-Reference Signals, channel condition information measurement reference markss）In one or more combination. Accordingly, when mapping downlink data,（Three）Can be located with the downlink data transmission in each time slot of above-mentioned descending sub frame RB in meet in transmission subframe for transmitting other descending ginsengs for transmitting RE and other descending references beyond the RE of DRS Examine on the RE beyond the RE of symbol, map downlink data；Or,（Four）Can with each time slot of above-mentioned descending sub frame should In the RB that downlink data transmission is located for transmit RE beyond the RE of DRS and with other descending reference symbol transmission subframes in For transmit RE beyond RE positions identical RE of other descending reference symbols and with synchronous transmission of signal subframe in for passing On RE beyond RE positions identical RE of defeated synchronizing signal, downlink data is mapped.For（Three）Plant downlink data mapping side Formula, can be only for other descending reference symbol transmission subframes, or no matter whether the descending sub frame is other descending ginsengs Symbol transmission subframe is examined, is used for transmitting in the RB that the downlink data transmission is located all in each time slot of above-mentioned descending sub frame Beyond RE and other descending references beyond the RE of DRS meets in transmission subframe for transmitting the RE of other descending reference symbols RE on, map downlink data.For（Four）Downlink data mapping mode is planted, other descending reference symbol transmissions can be directed to Subframe, it is also possible to for synchronous transmission of signal subframe, can also be for descending sub frame is both other descending reference symbol transmission Frame, and synchronous transmission of signal subframe, furthermore it is also possible to be no matter which kind of descending sub frame the descending sub frame is, all under above-mentioned In the RB that the downlink data transmission is located in each time slot of row subframe for transmit RE beyond the RE of DRS and with other under In row reference markss transmission subframe for transmit RE beyond RE positions identical RE of other descending reference symbols and with it is synchronous For the RE beyond RE positions identical RE of synchronous signal transmission in signal transmission subframe, downlink data is mapped.If The downlink data transmission of multi-antenna port is held, further, the use that resource mapping methods of the DRS on each antenna port is indicated Downlink data is not mapped on the RE of transmission DRS.

Explanation is needed, if there is no tradition on operational cell（legacy）The descending letter such as PDCCH, PCFICH, PHICH Road is transmitted, the conventional downstream channel, the i.e. control area in a descending sub frame（For different situations, control area accounts for It is different with OFDM symbol number, can be front 1～2 OFDM symbol of even timeslots, or front 1～3 OFDM symbol, or front 1～4 Individual OFDM symbol）The down channel of transmission, then when above-mentioned downlink data maps：The all OFDM symbols that can be directed in a subframe Number mapped, you can be mapped in the control area transmission define on traditional member carrier, i.e., indefinite for the operational cell Adopted control area；Otherwise, OFDM symbol that can only be in the data area in a descending sub frame is mapped.The invention described above The method that embodiment is provided can be for all descending sub frames, it is preferred that can also be for synchronous transmission of signal subframe , i.e., the descending sub frame that said method comes into force is only synchronous transmission of signal subframe.If above-mentioned descending sub frame is synchronizing signal Transmission subframe, then synchronizing signal is also mapped in above-mentioned descending sub frame the RE for being used for synchronous signal transmission.Accordingly, holding Before row above-mentioned steps 100, can be according to mapping ruler set in advance, judging whether descending sub frame is needed according to the present invention The method that embodiment is provided carries out DRS mappings, if it is desired, then execution step 100, otherwise, according to existing DRS mapping methods Mapped.

It is used for transmitting the RB that the RE of DRS is located in above-mentioned descending sub frame, specifically includes：（One）Lower line number in the descending sub frame According to all RB in the RB set that transmission is located, wherein, the RB that should be located comprising the downlink data transmission for transmitting the RE of DRS Gather for a RB, RB set includes the RB that all RE for transmitting DRS in descending available bandwidth are located, and wraps Containing with synchronous transmission of signal subframe in for synchronous signal transmission RE be located RB numbering identicals RB.That is, working as The RB that all RE for transmitting DRS in the descending available bandwidth of front operational cell are located, is carried using the embodiment of the present invention For method DRS is mapped.Or, the RB that should be located comprising the downlink data transmission for transmitting the RE of DRS is second RB gathers, and the 2nd RB set includes the combination of the RB that any RE for transmitting DRS is located in descending available bandwidth.Namely Say, the RB combinations being arbitrarily located for the RE for transmitting DRS in descending available bandwidth, using side provided in an embodiment of the present invention Method is mapped to DRS, even if no synchronous signal transmission and/or other descending reference symbols in these RB.The descending son The RB collection that downlink data transmission is located in frame is combined into the RB set of any position in descending available bandwidth；Or,（Two）Under this In row subframe downlink data transmission be located RB set in synchronous transmission of signal subframe in for synchronous signal transmission RE institutes RB numbering identicals RB.That is, what the RE for being used for synchronous signal transmission only in synchronous transmission of signal subframe was located RB positions identical RB, is mapped to DRS using method provided in an embodiment of the present invention, to other in descending available bandwidth RB can continue to use existing mapping mode.

Based on the embodiments of the present invention, there is provided three kinds of preferred implementations, it is described in detail as follows.

The first preferred implementation

In the first preferred implementation, for antenna port p, can from existing LET-A communication standards be In at least one DRS pattern of antenna port p definition, its DRS is selected to map resource with synchronizing signal mapping resource not There is the DRS pattern for overlapping.So, above-mentioned DRS is referred to from LTE-A Rel- in the resource mapping method of antenna port p A kind of DRS esource impact sides in 10 systems for selecting at least one DRS resource mapping methods of antenna port p definition Formula.The DRS resource mapping methods of selection meet：In same time slot position, the descending son of the DRS resource mapping methods determination of selection It is used for synchronous signal transmission in the numbering of the OFDM symbol being located for the RE for transmitting DRS in frame and synchronous transmission of signal subframe The numbering of the OFDM symbol that RE is located is different.

Wherein, have at least one DRS resource mapping methods of antenna port p definition in LTE-A Rel-10 systems Body can be the DRS pattern shown in Fig. 2 a ~ 3b.It is specific as follows：

For antenna port p=5, if above-mentioned descending sub frame is the TDD system descending sub frame using routine CP（Including TDD The conventional descending sub frame of the special subframe and TDD system of system）, then the DRS pattern shown in Fig. 2 a can be used as upper Resource mapping methods of the DRS described in step 100 in antenna port p is stated, if above-mentioned descending sub frame is using extension CP TDD system descending sub frame, then can use the DRS pattern shown in Fig. 2 b as the DRS described in above-mentioned steps 100 in day The resource mapping method of line end mouth p.

Or,

For p=7 or p=8 or p=7 ..., ν+6, if above-mentioned descending sub frame is the descending son of routine using routine CP Frame, then DRS may refer in the resource mapping method of antenna port p, in LTE-A Rel-10 systems special subframe configuration 3,4,8 The DRS resource mapping methods of the antenna port p under conventional CP.Specifically, for antenna port p=7 or p=8 or p=7,8 or p =7,8,11 or p=7,8,13, or p=7,8,11,1, using the DRS pattern in Fig. 3 a shown in row left side as above-mentioned step Resource mapping methods of the DRS described in rapid 100 in antenna port p；For antenna port p=7 ..., the antenna end in ν+6 Mouth 9, antenna port 10, antenna port 12 and/or antenna port 14, are made using the DRS pattern in Fig. 3 a shown in row right side For the DRS described in above-mentioned steps 100 antenna port p resource mapping method.Now, as DRS occupies descending sub frame Third and fourth OFDM symbol of even timeslots, therefore, antenna port p only supports traditional PDCCH transmission of 2 OFDM symbols.

Or,

For p=7 or p=8 or p=7 ..., ν+6, if above-mentioned descending sub frame is the TDD system routine using routine CP Descending sub frame, DRS are can also refer in the resource mapping method of antenna port p, and in LTE-A-Rel-10 systems, special subframe is matched somebody with somebody Put the DRS resource mapping methods of 1,2,6, the 7 antenna port p under conventional CP.Specifically, for antenna port p=7, p=8, p Antenna port 11 and/or antenna port 13 in=7 ..., ν+6, is made using the DRS pattern on Fig. 3 a shown in row left side For the DRS described in above-mentioned steps 100 antenna port p resource mapping method；For antenna port p=7 ..., in ν+6 Antenna port 9, antenna port 10, antenna port 12 and/or antenna port 14, using the DRS on Fig. 3 a shown in row right side Pattern as the DRS described in above-mentioned steps 100 antenna port p resource mapping method.

Or,

For p=7 or p=8 or p=7 ..., ν+6, if above-mentioned descending sub frame is the TDD system routine using extension CP Descending sub frame, above-mentioned DRS are may refer in the resource mapping method of antenna port p, and in LTE-ARel-10 systems, special subframe is matched somebody with somebody Put the DRS resource mapping methods of 1,2,3,5, the 6 antenna port p under extension CP.Specifically, for antenna port p=7 and/or P=8, using the DRS pattern upper figures of Fig. 3 b Suo Shi as the DRS described in above-mentioned steps 100 antenna port p resource Mapping mode.

Or,

For p=7 or p=8 or p=7 ..., ν+6, if above-mentioned descending sub frame is special using the TDD system of routine CP Subframe, above-mentioned DRS are specifically referred in the resource mapping method of antenna port p, conventional descending sub frame in LTE-A Rel-10 systems The DRS resource mapping methods of the antenna port p under conventional CP.Now, as DRS only maps into descending sub frame even timeslots In two OFDM symbols, therefore, only support the transmission of 1～4 antenna port, such as p=7 or p=8 or p=7 ..., ν+6, ν=1,2, 3、4.Specifically, for antenna port p=7 and/or p=8, using the DRS pattern under Fig. 3 a shown in row left side as above-mentioned Resource mapping methods of the DRS described in step 100 in antenna port p；For antenna port p=7 ..., the antenna in ν+6 Port 9 and/or antenna port 10, using the DRSpattern under Fig. 3 a shown in row right side as described in above-mentioned steps 100 Resource mapping methods of the DRS in antenna port p.

Second preferred implementation

In second preferred implementation, for antenna port p, it is possible to use in existing LET-A communication standards For the DRS pattern of antenna port p definition.When DRS maps, to conflicting, the corresponding RE of OFDM symbol does not map DRS.Accordingly , the specific implementation of above-mentioned steps 100 can be：According to what is defined for antenna port p in LTE-A Rel-10 systems DRS resource mapping methods, it would be desirable to which the DRS transmitted on antenna port p is mapped to punching OFDM symbols in above-mentioned descending sub frame The RE for transmitting DRS outside number corresponding RE.Wherein, OFDM symbol of punching may refer to, in same time slot position, should It is in the OFDM symbol of the presence DRS mappings that DRS resource mapping methods determine, synchronous for transmitting with synchronous transmission of signal subframe The OFDM symbol numbering identical OFDM symbol that the RE of signal is located.Or, punching OFDM symbol may also mean that, same time slot In position, in the OFDM symbol of the presence DRS mappings that the DRS resource mapping methods determine, with synchronous transmission of signal subframe in use In the identical OFDM symbol adjacent with numbering of OFDM symbol numbering that the RE of synchronous signal transmission is located.With row left side institute under Fig. 3 a In the conventional descending sub frame for showing, as a example by the DRS pattern of antenna port 7, punching OFDM symbol may refer to, with for the moment Gap position（It is even timeslots）In, last OFDM symbol for the presence DRS mappings that the DRS pattern determine, or Person's most latter two OFDM symbol.

Wherein, the DRS resource mapping methods for defining for antenna port p in LTE-A Rel-10 systems can be specifically figure DRS pattern shown in 2a ~ 3b.It is specific as follows：

As above-mentioned antenna port p=5, when above-mentioned descending sub frame is the FDD system descending sub frame using routine CP, punching OFDM symbol is specifically referred to, last OFDM symbol of the even timeslots of the descending sub frame.Specifically, using shown in Fig. 2 a DRS pattern as the DRS described in above-mentioned steps 100 antenna port p resource mapping method, DRS map when, in idol DRS is not mapped on the corresponding RE of numbering l=6 of the OFDM symbol of number time slot.

Or,

As above-mentioned antenna port p=5, when above-mentioned descending sub frame is the FDD system descending sub frame using extension CP, punching OFDM symbol is specifically referred to, the penultimate OFDM symbol of the even timeslots of the descending sub frame.Specifically, using shown in Fig. 2 b DRS pattern as the DRS described in above-mentioned steps 100 antenna port p resource mapping method, DRS map when, DRS is not mapped on the corresponding RE of numbering l=5 of the OFDM symbol of even timeslots.

Or,

When above-mentioned antenna port p is p=7 or p=8 or p=7 ..., ν+6, above-mentioned descending sub frame is the descending son of FDD system Frame, punching OFDM symbol are specifically referred to, most latter two OFDM symbol of the even timeslots of the descending sub frame.Specifically, for making With the FDD system descending sub frame of conventional CP, using the corresponding DRS pattern in row's respective antenna port under Fig. 3 a as above-mentioned step Resource mapping methods of the DRS described in rapid 100 in antenna port p, for the FDD system descending sub frame for using extension CP, makes With the DRS pattern shown in arranging under Fig. 3 b as the DRS described in above-mentioned steps 100 in the esource impact side of antenna port p Formula.When DRS maps, DRS is not mapped on the corresponding RE of numbering l=5 and l=6 of the OFDM symbol of even timeslots.

Or,

When above-mentioned antenna port p is p=7 or p=8 or p=7 ..., ν+6, above-mentioned descending sub frame is under TDD system routine During row subframe, punching OFDM symbol is specifically referred to, and last or most latter two OFDM of the odd numbered slots of the descending sub frame are accorded with Number.Specifically, it is for the TDD system routine descending sub frame for using routine CP, corresponding using respective antenna port is arranged under Fig. 3 a DRS pattern extend CP for using as the DRS described in above-mentioned steps 100 in the resource mapping method of antenna port p TDD system routine descending sub frame, using the DRS pattern shown in arranging under Fig. 3 b as the DRS described in above-mentioned steps 100 In the resource mapping method of antenna port p.When DRS maps, on the corresponding RE of numbering l=6 of the OFDM symbol of odd numbered slots DRS is not mapped；Or, DRS is not mapped on the corresponding RE of numbering l=5 and l=6 of the OFDM symbol of odd numbered slots.If beaten Hole OFDM symbol refers to that last OFDM symbol of the odd numbered slots of the descending sub frame then can only support single-ended port transmission DRS。

Or,

When above-mentioned antenna port p is p=7 or p=8 or p=7 ..., ν+6, above-mentioned descending sub frame is using routine CP TDD system special subframe, punching OFDM symbol are specifically referred to, the 3rd OFDM symbol of the even timeslots of the descending sub frame, or 3rd and the 4th OFDM symbol of the even timeslots that DRS resource mapping methods described in person determine.Specifically, for TDD systems System special subframe configuration 3,4,8, using the corresponding DRS pattern in row's respective antenna port in Fig. 3 a as above-mentioned steps 100 Described in DRS antenna port p resource mapping method, for TDD system special subframe configuration 1,2,6,7, using Fig. 3 a The corresponding DRS pattern in upper row's respective antenna port as the DRS described in above-mentioned steps 100 antenna port p resource Mapping mode.When DRS maps, DRS is not mapped on the corresponding RE of numbering l=2 of the OFDM symbol of even timeslots；Or, DRS is not mapped on the corresponding RE of numbering l=2 and l=3 of the OFDM symbol of even timeslots.

In second preferred implementation, it is only supported on 1～4 antenna port and transmits DRS.

Furthermore it is also possible to redefine resource mapping methods of the DRS on antenna port p using alternate manner.For example, base In second preferred implementation, by the DRS mapping relations in each DRS pattern therein, in OFDM symbol of punching Delete, obtain new DRS.Specifically as shown in Fig. 5 a ~ 9b.Wherein, delete in grid square as punching OFDM symbol in each figure The RE of DRS mapping relations.

The third preferred implementation

In the third preferred implementation, for antenna port p, can be based in existing LET-A communication standards For the DRS pattern of antenna port p definition, new DRS pattern are redefined.So, above-mentioned DRS is in antenna port The resource mapping method of p is referred to：By the DRS esource impacts that will be defined for antenna port p in LTE-A Rel-10 systems RE positions in the descending sub frame that mode determines for transmitting DRS carry out the translation based on OFDM symbol, and the DRS resources for obtaining are reflected Penetrate mode.

Or, above-mentioned DRS is may also mean that in the resource mapping method of antenna port p：By by LTE-ARel-10 systems In carry out for the RE positions in the descending sub frame that determines of DRS resource mapping methods of antenna port p definition for transmitting DRS Based on the translation of OFDM symbol, and the translation based on subcarrier is carried out, the DRS resource mapping methods for obtaining.

Wherein, to a DRS resource mapping method, the RE at least one OFDM symbol can be translated.If RE in multiple OFDM symbols is translated, the OFDM symbol number that the RE in different OFDM symbols is translated in time domain can be with Identical or different, the subcarrier number that the RE in different OFDM symbols is translated on frequency domain can be with identical or different.

For each antenna port, the OFDM symbol number translated in time domain can be with identical, it is also possible to different；In frequency domain The subcarrier number of upper translation can be with identical, it is also possible to different.Preferably, for identical DRS used in LTE-ARel-10 The antenna port of pattern, the OFDM symbol number translated on frequency domain are identical, and the subcarrier number phase translated on frequency domain Together.

It is below several preferred DRS pattern：

For antenna port p=5, if above-mentioned descending sub frame is the FDD system descending sub frame using routine CP：Only to figure In DRS pattern shown in 2a, the numbering of the OFDM symbol of even timeslots is the RE for transmitting DRS of l=6 to left K1=4 OFDM symbol, obtains the DRSpattern shown in Figure 10 a；Now, antenna port p=5 only supports 2 OFDM symbols Traditional PDCCH transmission.Or, it is l=6 only to the numbering of the OFDM symbol of even timeslots in the DRS pattern shown in Fig. 2 a For transmitting the RE of DRS to K1=5 OFDM symbol of left, obtain new DRS pattern；Now, antenna port p=5 Traditional PDCCH transmission of 1 OFDM symbol is supported only.Or, only to even timeslots in the DRS pattern shown in Fig. 2 a The numbering of OFDM symbol is l=6 for transmitting the RE of DRS to K1=2 OFDM symbol of right translation.Or, to shown in Fig. 2 a In DRS pattern, the numbering of the OFDM symbol of even timeslots is l=3 for transmitting the RE of DRS to left K1=2 OFDM symbol, while the numbering of the OFDM symbol of the dual numbers time slot is l=6 for transmitting the RE of DRS to left K2=3 Individual OFDM symbol.

For antenna port p=5, if above-mentioned descending sub frame is the FDD system descending sub frame using extension CP：Only to figure In DRS pattern shown in 2b, the numbering of the OFDM symbol of even timeslots is the RE for transmitting DRS of l=4 to left K1=2 OFDM symbol, obtains the DRSpattern shown in Figure 10 b；Now, antenna port p=5 only supports 2 OFDM symbols Traditional PDCCH transmission.Or, it is l=4 only to the numbering of the OFDM symbol of even timeslots in the DRS pattern shown in Fig. 2 b For transmitting the RE of DRS to K1=3 OFDM symbol of left, obtain new DRS pattern；Now, antenna port p=5 Traditional PDCCH transmission of 1 OFDM symbol is supported only.

For antenna port 7～14, if above-mentioned descending sub frame is the conventional descending sub frame using routine CP：To under Fig. 3 a In DRS pattern shown in row left side, each column is used for the RE for transmitting DRS while to K1=3 OFDM symbol of left, obtaining DRS pattern shown on the left of Figure 11 a, the DRS pattern shown on the left of Figure 11 a are arranged shown in left side in being Fig. 3 a DRS pattern, now, corresponding antenna port only supports 2 symbol tradition PDCCH transmission.Or, to row left side under Fig. 3 a In shown DRS pattern, each column is used to transmit the RE of DRS while to left K1=4, obtaining new DRS pattern, this When, corresponding antenna port only supports 1 symbol legacy PDCCH transmission.Or, to the DRS under Fig. 3 a shown in row left side In pattern, first row and secondary series are used for the RE for transmitting DRS to K1=3 OFDM symbol of left, by the 3rd row and the 4th The RE for transmitting DRS is arranged to K1=4 OFDM symbol of left.Or, to the DRS pattern under Fig. 3 a shown in row left side Middle first row and secondary series are used for the RE for transmitting DRS to K1=4 OFDM symbol of left, and the 3rd row and the 4th are arranged for passing The RE of defeated DRS is to K1=3 OFDM symbol of left.Each column in DRS pattern under Fig. 3 a shown in row right side is used to transmit The RE of DRS to K1=3 OFDM symbol of left, obtains DRS pattern shown on the right side of Figure 11 a, institute on the right side of Figure 11 a simultaneously The DRS pattern for showing arrange the DRS pattern shown in right side in being Fig. 3 a, now, corresponding antenna port only supports 2 Symbol tradition PDCCH is transmitted.Or, the RE for being used to transmit DRS to each column in the DRS pattern under Fig. 3 a shown in row right side is same When to left K1=4, obtain new DRS pattern, now, corresponding antenna port only supports 1 symbol legacy PDCCH is transmitted.Or, first row in the DRS pattern under Fig. 3 a shown in row right side and secondary series are used to transmit the RE of DRS To K1=3 OFDM symbol of left, the 3rd row and the 4th are arranged into RE for transmitting DRS to K1=4 OFDM symbol of left. Or, it is used for transmitting to first row and secondary series in the DRS pattern under Fig. 3 a shown in row right side the RE of DRS to left K1 3rd row and the 4th are arranged RE for transmitting DRS to K1=3 OFDM symbol of left by=4 OFDM symbols.

For antenna port 7～14, if above-mentioned descending sub frame is the conventional descending sub frame using routine CP：Can also prop up Hold and different DRS are obtained using different translation modes to FDD system descending sub frame and TDD system routine descending sub frame pattern.For example, to FDD system descending sub frame, only to first row in two DRS pattern shown in arranging under Fig. 3 a and the Two arrange RE for transmitting DRS to left K1=3 or K1=4 OFDM symbol, and the DRS pattern for obtaining are used as FDD system DRS pattern of the descending sub frame under conventional CP.To TDD system routine descending sub frame, only to shown two are arranged under Fig. 3 a In DRSpattern, the 3rd row and the 4th arrange RE for transmitting DRS to left K1=3 or K1=4 OFDM symbol, obtain DRS pattern are used as TDD system routine DRSpattern of the descending sub frame under conventional CP.

For antenna port 7～14, if above-mentioned descending sub frame is the conventional descending sub frame using extension CP：To under Fig. 3 b In DRS pattern shown in side, each column is used for the RE for transmitting DRS to K1=3 OFDM symbol of left, now, antenna end Mouth 7,8 only supports 1 symbol legacy PDCCH transmission, obtains DRS pattern as shown in figure 11b.

For antenna port 7～14, if above-mentioned descending sub frame is the conventional descending sub frame using extension CP：Can also prop up Hold and different DRS are obtained using different translation modes to FDD system descending sub frame and TDD system routine descending sub frame pattern.For example, to FDD system descending sub frame, only to first row and secondary series in DRS pattern shown on the downside of Fig. 3 b For transmitting the RE of DRS to K1=3 OFDM symbol of left, the DRS pattern for obtaining exist as FDD system descending sub frame DRS pattern under extension CP.To TDD system routine descending sub frame, only in the DRS pattern shown on the downside of Fig. 3 b the Three row and the 4th arrange RE for transmitting DRS to K1=3 OFDM symbol of left, and the DRS pattern for obtaining are used as TDD systems DRS pattern of the conventional descending sub frame of system under extension CP.

For antenna port 7～14, if above-mentioned descending sub frame is the TDD system special subframe configuration 1/ using routine CP 2/6/7：To each column DRS in the DRS pattern on Fig. 3 a shown in row left side to right translation K1=3OFDM symbols, obtain such as figure DRS pattern shown on the left of 12a, wherein arranging invalid for transmitting the RE of DRS to special subframe configuration 1 and 6, last 1.It is right In DRSpattern on Fig. 3 a shown in row right side, each column DRS is obtained such as institute on the right side of Figure 12 a to right translation K1=3OFDM symbols The DRS pattern for showing, wherein arranging invalid for transmitting the RE of DRS to special subframe configuration 1 and 6, last 1.Or, to Fig. 3 a On the left of upper row shown in DRS pattern in first two columns DRS to right translation K1=1OFDM symbols, next two columns DRS to the right Translation K1=2OFDM symbols, obtain the DRS pattern as shown on the left of Figure 12 b.To the DRS on Fig. 3 a shown in row right side In pattern, first two columns DRS is obtained to right translation K1=1OFDM symbols, next two columns DRS to right translation K1=2OFDM symbols To the DRS pattern as shown on the right side of Figure 12 b.Or, to each column DRS in the DRS pattern on Fig. 3 a shown in row left side To right translation K1=2OFDM symbols, new DRS pattern are obtained.To in the DRS pattern on Fig. 3 a shown in row right side Each column DRS to right translation K1=2OFDM symbols, obtains new DRS pattern.Or, shown on the left of row on Fig. 3 a First two columns DRS in DRS pattern is accorded with to right translation K1=2OFDM to left K1=2OFDM symbols, next two columns DRS Number, obtain the DRS pattern as shown on the left of Figure 12 c.To first two columns in the DRS pattern on Fig. 3 a shown in row right side DRS, is obtained such as institute on the right side of Figure 12 c to right translation K1=2OFDM symbols to left K1=2OFDM symbols, next two columns DRS The DRS pattern for showing.Or, only by first two columns DRS in the DRS pattern on Fig. 3 a shown in row left side to left K1 =2OFDM symbols, obtain as schemed new DRSpattern.Only by first two columns in the DRS pattern on Fig. 3 a shown in row right side DRS to left K1=2OFDM symbols, obtains new DRS pattern.

Particularly, for antenna port 7～14, if above-mentioned descending sub frame is the special son of TDD system using routine CP Frame configuration 1 and 6, or for any TDD system special subframe using routine CP is configured, can also only to row left side on Fig. 3 a In shown DRS pattern, the 1st arranges RE for transmitting DRS to left K1=1 or 2OFDM symbol, obtains new DRS Pattern, as K1=1, antenna port 7 ~ 14 only supports traditional PDCCH transmission of 1 symbol；It is only shown to row right side on Fig. 3 a DRSpattern in the 1st arrange RE for transmitting DRS to left K1=1 or 2OFDM symbol, obtain new DRS Pattern, as K1=1, antenna port 7 ~ 14 only supports traditional PDCCH transmission of 1 symbol.Or, to arrange on Fig. 3 a two Individual DRS pattern, can also in each DRS pattern respectively by 4 arrange for transmit DRS RE translate after so as to account for With the 4th, 6,7,9 OFDM symbols.

Particularly, for antenna port 7～14, if above-mentioned descending sub frame is the special son of TDD system using routine CP Frame configuration 3/4/8：To the two DRS pattern arranged in Fig. 3 a, only first row and secondary series are used in each DRS pattern In the RE of DRS being transmitted to K1=3 OFDM symbol of right translation, obtain DRS pattern as shown in figure 12d.Or, to Fig. 3 a First row and secondary series are only used for the RE for transmitting DRS to the right in each DRS pattern by two DRS pattern of middle row K1=1 OFDM symbol of translation, obtains the DRS pattern as shown in Figure 12 e.Or, to two arranged in Fig. 3 a First row and secondary series are only used to transmit the RE of DRS to right translation K1=2 in each DRS pattern by DRSpattern OFDM symbol, obtains new DRS pattern.Or, to two DRSpattern arranged in Fig. 3 a, each DRS pattern In first row and secondary series are used for into the RE for transmitting DRS to K1=2 OFDM symbol of left only, obtain as shown in Figure 12 f DRS pattern。

Particularly, for antenna port 7～14, if above-mentioned descending sub frame is the special son of TDD system using extension CP Frame configuration 1/2/3/5/6：To the two DRS pattern arranged on Fig. 3 b, will be the RE of each column DRS in each DRSpattern equal To K1=1 OFDM symbol of left, the DRS pattern as shown in Figure 12 g are obtained.Or, to two DRS arranged on Fig. 3 b Pattern, by the RE of each column DRS in each DRS pattern to K1=4 OFDM symbol of left, obtains Figure 12 h institutes The DRSpattern for showing.

Particularly, for antenna port 7～14, if above-mentioned descending sub frame is the special son of TDD system using routine CP Frame configuration 9, can configure 3/4/8 identical DRS pattern using with the TDD system special subframe for using routine CP, for example, scheme Pattern in 12b or Figure 12 c, or, 1/2/6/7 identical is configured using with the TDD system special subframe for using routine CP Pattern in DRS pattern, such as Figure 12 e or Figure 12 f；As special subframe configuration 9 only includes 6 under conventional CP OFDM symbol as downlink transfer, therefore using above-mentioned DRS pattern when, the DRS RE included in only front 6 OFDM symbols Effectively, other DRS RE are truncated.

Particularly, for antenna port 7～14, if above-mentioned descending sub frame is the special son of TDD system using extension CP Frame configuration 7, can configure 1/2/3/5/6 identical DRS pattern, example using with the TDD system special subframe for using extension CP Such as the pattern in Figure 12 g or Figure 12 h；As special subframe configuration 7 only includes 5 OFDM symbols under extension CP as under Row transmission, therefore during using above-mentioned DRS pattern, the DRS RE included in only front 5 OFDM symbols are effective, other DRS RE It is truncated.

Particularly, for antenna port 7～14, if above-mentioned descending sub frame is the special son of TDD system using routine CP Frame configuration 0/5, includes the DRS pattern under any of the above described routine CP of DRS RE in can adopting front 3 OFDM symbols, Such as pattern in Figure 12 c or Figure 12 f；As special subframe configuration 0/5 is only made including 3 OFDM symbols under conventional CP For downlink transfer, therefore during using above-mentioned DRS pattern, the DRS RE included in only front 3 OFDM symbols effectively, other DRS RE are truncated.

Particularly, for antenna port 7～14, if above-mentioned descending sub frame is the special son of TDD system using extension CP Frame configuration 0/4, can adopt any of the above described one DRS pattern extended under CP comprising DRS RE in front 3 OFDM symbols, Such as pattern in Figure 12 h；As special subframe configuration 0/4 only includes 3 OFDM symbols under extension CP as descending biography It is defeated, therefore during using above-mentioned DRS pattern, effectively, other DRS RE are cut the DRS RE included in only front 3 OFDM symbols It is short.

It should be noted that when adopting above-mentioned the first preferred implementation or the third preferred implementation, day Line end mouth 7,8,11,13 can use identical DRS pattern, antenna port 9,10,12,14 use identical DRS pattern.Under extension CP, the antenna port that DRS is sent in same asset is distinguished by orthogonal sequence.In addition, above-mentioned is sent out What bright embodiment was provided is only the compound mode of preferred antenna port multiplexed resource, however not excluded that other antenna port multiplexing moneys The compound mode in source.

In UE sides, a kind of transmission method of DRS provided in an embodiment of the present invention as shown in figure 13, specifically includes following behaviour Make：

Step 200, by antenna port p receive descending sub frame；

Step 210, according to DRS antenna port p resource mapping method, in the descending sub frame be used for transmit DRS's DRS is obtained on RE；In same time slot position, in above-mentioned descending sub frame, it is used for the numbering of the OFDM symbol at the RE places for transmitting DRS, It is different from the numbering of the OFDM symbol that the RE for being used for synchronous signal transmission in synchronous transmission of signal subframe is located.

In the embodiment of the method for UE sides, to DRS the resource mapping method of antenna port p description, and to descending son The description of the RE in frame for transmitting DRS is identical with the description in the embodiment of the method for above-mentioned eNB sides, repeats no more here.

Wherein, UE sides can be according to the configuration of the high-level signaling of eNB sides, it is also possible to according to the agreement with eNB, using with The corresponding resource mapping method in eNB sides obtains DRS.

When using the DRS described in above-mentioned second preferred implementation in the resource mapping method of antenna port p, The specific implementation of above-mentioned steps 210 can be：According to the DRS in LTE-ARel-10 systems for antenna port p definition Resource mapping method, obtains on the RE for transmitting DRS outside the corresponding RE of OFDM symbol of punching in above-mentioned descending sub frame DRS.The punching OFDM symbol is referred to, in same time slot position, the presence DRS mappings that the DRS resource mapping methods determine In OFDM symbol, with synchronous transmission of signal subframe in for synchronous signal transmission RE be located OFDM symbol numbering identical OFDM symbol, or, punching OFDM symbol is referred to, in same time slot position, the presence DRS that the DRS resource mapping methods determine In the OFDM symbol of mapping, with synchronous transmission of signal subframe in for synchronous signal transmission RE be located OFDM symbol numbering OFDM symbol identical and that numbering is adjacent.

If above-mentioned descending sub frame is synchronous transmission of signal subframe.Then in the method for above-mentioned UE sides, by antenna port p Before receiving descending sub frame, following operation can also be included：Detection synchronizing signal, to obtain down-going synchronous.

The embodiment of the present invention also provides a kind of transmitting device of DRS, and the device is network side apparatus, can be specifically eNB, Or arrange and the device on eNB.Its structure as shown in figure 14, implements structure as follows：

Resource mapping module 1001, for according to DRS antenna port p resource mapping method, it would be desirable in antenna end The DRS transmitted on mouth p is used for transmitting the RE of DRS in being mapped to descending sub frame；In same time slot position, use in the descending sub frame It is used for the RE institutes of synchronous signal transmission in the numbering of the OFDM symbol being located in the RE of transmission DRS, with synchronous transmission of signal subframe OFDM symbol numbering it is different.

Data transmission module 1002, for transmitting above-mentioned descending sub frame by above-mentioned antenna port p.

In the embodiment of network side apparatus, to DRS the resource mapping method of antenna port p description, and under The description of the RE in row subframe for transmitting DRS is identical with the description in the embodiment of the method for above-mentioned eNB sides, repeats no more here.

When using the DRS described in above-mentioned second preferred implementation in the resource mapping method of antenna port p, Resource mapping module 1001 specifically for：According to the DRS resources in LTE-A Rel-10 systems for above-mentioned antenna port p definition Mapping mode, it would be desirable to which punching OFDM symbol is corresponding during the DRS transmitted on antenna port p is mapped to above-mentioned descending sub frame The RE for transmitting DRS outside RE.Punching OFDM symbol refers to that, in same time slot position, the DRS resource mapping methods are true In the OFDM symbol of fixed presence DRS mappings, with synchronous transmission of signal subframe in be located for the RE of synchronous signal transmission The numbering identical OFDM symbol of OFDM symbol.Or, punching OFDM symbol refers to that, in same time slot position, the DRS resources are reflected In the OFDM symbol of presence DRS that the mode of penetrating determines mapping, with synchronous transmission of signal subframe in for synchronous signal transmission RE The OFDM symbol that numbering is identical and numbering is adjacent of the OFDM symbol at place.

If above-mentioned descending sub frame is synchronous transmission of signal subframe.Then resource mapping module 1001 can be also used for：Will be same Step signal is used for synchronous signal transmission RE in being mapped to above-mentioned descending sub frame.

The embodiment of the present invention also provides a kind of transmitting device of DRS, and the device is UE sides device, can be specifically UE, The device that can be disposed on UE.Which realizes that structure as shown in figure 16, implements structure as follows：

Data reception module 2001, for receiving descending sub frame by antenna port p；

Descending reference symbol acquisition module 2002, for according to DRS antenna port p resource mapping method, above-mentioned It is used to transmit in descending sub frame obtain on the RE of DRS DRS.In same time slot position, it is used for transmitting the RE of DRS in the descending sub frame It is used for the OFDM symbol at the RE places of synchronous signal transmission in the numbering of the OFDM symbol at place, with synchronous transmission of signal subframe Numbering is different.

In the embodiment of UE sides device, to DRS the resource mapping method of antenna port p description, and to descending The description of the RE in subframe for transmitting DRS is identical with the description in the embodiment of the method for above-mentioned eNB sides, repeats no more here.

When using the DRS described in above-mentioned second preferred implementation in the resource mapping method of antenna port p, Descending reference symbol acquisition module 2002 specifically for：Define for the antenna port p according in LTE-A Rel-10 systems DRS resource mapping methods, the RE for transmitting DRS outside the corresponding RE of OFDM symbol that punches in above-mentioned descending sub frame Obtain DRS.Punching OFDM symbol is referred to, in same time slot position, the presence DRS mappings that the DRS resource mapping methods determine In OFDM symbol, with synchronous transmission of signal subframe in for synchronous signal transmission RE be located OFDM symbol numbering identical OFDM symbol, or, punching OFDM symbol is referred to, in same time slot position, the presence DRS that the DRS resource mapping methods determine In the OFDM symbol of mapping, with synchronous transmission of signal subframe in for synchronous signal transmission RE be located OFDM symbol numbering OFDM symbol identical and that numbering is adjacent.

If above-mentioned descending sub frame is synchronous transmission of signal subframe.As shown in figure 15, above-mentioned UE sides device can also include Synchronization signal detection module 2003, for, before data reception module 2001 receives descending sub frame by antenna port p, detecting Synchronizing signal, to obtain down-going synchronous.

Obviously, those skilled in the art can carry out the essence of various changes and modification 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 comprising these changes and modification.

Claims

1. a kind of transmission method of downstream station dedicated reference symbol DRS, it is characterised in that include：

According to DRS antenna port p resource mapping method, it would be desirable to the DRS transmitted on antenna port p is mapped to descending son It is used for transmitting the Resource Unit RE of DRS in frame；In same time slot position, it is used for transmitting the RE institutes of DRS in the descending sub frame Orthogonal frequency division multiplex OFDM symbol numbering, with synchronous transmission of signal subframe in for synchronous signal transmission RE be located The numbering of OFDM symbol is different；

The descending sub frame is transmitted by the antenna port p；

Wherein：

The DRS is referred in the resource mapping method of antenna port p：

For selecting at least one DRS resource mapping methods of antenna port p definition from LTE-A Rel-10 systems A kind of DRS resource mapping methods, in same time slot position, the descending sub frame that the DRS resource mapping methods of the selection determine In in numbering and the synchronous transmission of signal subframe of OFDM symbol that are located for the RE that transmits DRS for synchronous signal transmission RE The numbering of the OFDM symbol at place is different；

If the descending sub frame is the conventional descending sub frame using conventional cyclic prefix CP, moneys of the DRS in antenna port p Source mapping mode is specifically referred to, and in LTE-A Rel-10 systems, special subframe configures 3,4, the 8 antenna port p's under conventional CP DRS resource mapping methods, the conventional descending sub frame refer to TDD system routine descending sub frame, or FDD FDD system descending sub frame；

Or, if the descending sub frame is the TDD system routine descending sub frame using routine CP, the DRS is in antenna port p Resource mapping method specifically refer to, in LTE-A Rel-10 systems special subframe configure 1,2,6,7 antennas under conventional CP The DRS resource mapping methods of port p；

Or, if the descending sub frame is the TDD system routine descending sub frame using extension CP, the DRS is in antenna port p Resource mapping method specifically refer to, in LTE-A Rel-10 systems special subframe configure 1,2,3,5,6 extension CP under days The DRS resource mapping methods of line end mouth p；

Or, if the descending sub frame is the TDD system special subframe using routine CP, moneys of the DRS in antenna port p Source mapping mode is specifically referred to, the DRS moneys of conventional antenna port p of the descending sub frame under conventional CP in LTE-A Rel-10 systems Source mapping mode；

Wherein, the transport layer that the antenna port p is p=7 or p=8 or p=7 ..., υ+6, υ are the corresponding downlink datas of DRS Number；

Or,

The DRS is referred in the resource mapping method of antenna port p：

According to the DRS resource mapping methods in LTE-A Rel-10 systems for antenna port p definition, it would be desirable to described The DRS transmitted on antenna port p be mapped in the descending sub frame outside the corresponding RE of OFDM symbol that punches for transmitting DRS RE on；The punching OFDM symbol refers to that, in same time slot position, the presence DRS that the DRS resource mapping methods determine reflects In the OFDM symbol penetrated, with synchronous transmission of signal subframe in for synchronous signal transmission RE be located OFDM symbol numbering phase Same OFDM symbol, or, the punching OFDM symbol refers to that, in same time slot position, the DRS resource mapping methods determine Presence DRS mapping OFDM symbol in, with synchronous transmission of signal subframe in for synchronous signal transmission RE be located OFDM The OFDM symbol that numbering is identical and numbering is adjacent of symbol；The antenna port p is p=5 or p=7 or p=8 or p=7 ..., The transmission number of plies of υ+6, υ for the corresponding downlink datas of DRS；

Or,

The DRS is referred in the resource mapping method of antenna port p：

It is descending that the DRS resource mapping methods defined by the antenna port p will be directed in LTE-A Rel-10 systems determine RE positions in subframe for transmitting DRS carry out the translation based on OFDM symbol, the DRS resource mapping methods for obtaining；

Or, by what the DRS resource mapping methods in LTE-A Rel-10 systems for antenna port p definition were determined RE positions in descending sub frame for transmitting DRS carry out the translation based on OFDM symbol, and carry out the translation based on subcarrier, obtain The DRS resource mapping methods for arriving.

2. method according to claim 1, it is characterised in that if also transmitting other descending reference symbols, same time slot In position, it is used for the numbering of the OFDM symbol at the RE places for transmitting DRS in the descending sub frame, accords with described other descending references The numbering of the OFDM symbol being located for the RE for transmitting other descending reference symbols in number transmission subframe is different；It is described other Descending reference symbol includes cell dedicated reference symbols CRS, positioning reference markss PRS, channel condition information measurement reference One or more combination in symbol CSI-RS.

3. method according to claim 1, it is characterised in that：

As the antenna port p=5, when the descending sub frame is the FDD system descending sub frame using routine CP, the punching OFDM symbol is specifically referred to, last OFDM symbol of the even timeslots of the descending sub frame；

Or,

As the antenna port p=5, when the descending sub frame is the FDD system descending sub frame using extension CP, the punching OFDM symbol is specifically referred to, the penultimate OFDM symbol of the even timeslots of the descending sub frame；

Or,

When the transmission number of plies that the antenna port p is p=7 or p=8 or p=7 ..., υ+6, υ are the corresponding downlink datas of DRS, When the descending sub frame is FDD system descending sub frame, the punching OFDM symbol is specifically referred to, during the even number of the descending sub frame Most latter two OFDM symbol of gap；

Or,

When the antenna port p is p=7 or p=8 or p=7 ..., υ+6, the descending sub frame is TDD system routinely descending son During frame, the punching OFDM symbol is specifically referred to, last or most latter two OFDM of the odd numbered slots of the descending sub frame Symbol；

Or,

When the antenna port p is p=7 or p=8 or p=7 ..., υ+6, the descending sub frame is the TDD systems using routine CP During system special subframe, the punching OFDM symbol is specifically referred to, the 3rd OFDM symbol of the even timeslots of the descending sub frame, Or the 3rd and the 4th OFDM symbol of the even timeslots of the descending sub frame.

4. method according to claim 1 and 2, it is characterised in that the descending sub frame is synchronous transmission of signal subframe.

5. method according to claim 4, it is characterised in that the method also includes：

Synchronizing signal is mapped in the descending sub frame is used for the RE of synchronous signal transmission.

6. method according to claim 1 and 2, it is characterised in that the RE for being used for transmitting in the descending sub frame DRS is located Resource Block RB, specifically include：

All RB in the RB set that downlink data transmission is located in the descending sub frame, wherein, it is descending in the descending sub frame The RB collection that data transfer is located is combined into the RB set of any position in descending available bandwidth；Or,

It is synchronous for transmitting with synchronous transmission of signal subframe in the RB set that downlink data transmission is located in the descending sub frame RB numbering identicals RB that the RE of signal is located.

7. a kind of transmission method of downstream station dedicated reference symbol DRS, it is characterised in that include：

Descending sub frame is received by antenna port p；

According to DRS in the resource mapping method of antenna port p, it is used to transmit the Resource Unit RE of DRS in the descending sub frame Upper acquisition DRS；In same time slot position, it is used for transmitting the orthogonal frequency division multiplex OFDM that the RE of DRS is located in the descending sub frame The numbering of symbol is different from the numbering of the OFDM symbol that the RE for being used for synchronous signal transmission in synchronous transmission of signal subframe is located；

Wherein：

The DRS is referred in the resource mapping method of antenna port p：

Or,

The DRS is referred in the resource mapping method of antenna port p：

According to the DRS resource mapping methods in LTE-A Rel-10 systems for antenna port p definition, in the descending son DRS is obtained on the RE for transmitting DRS outside the corresponding RE of OFDM symbol of punching in frame；It is described punching OFDM symbol refer to, In same time slot position, in the OFDM symbol of the presence DRS mappings that the DRS resource mapping methods determine, pass with synchronizing signal It is used for the numbering identical OFDM symbol of the OFDM symbol at the RE places of synchronous signal transmission in defeated subframe, or, the punching OFDM symbol is referred to, in same time slot position, in the OFDM symbol of the presence DRS mappings that the DRS resource mapping methods determine, And numbering identical with the numbering of the OFDM symbol that the RE for being used for synchronous signal transmission in synchronous transmission of signal subframe is located is adjacent OFDM symbol；The antenna port p is that p=5 or p=7 or p=8 or p=7 ..., υ+6, υ are the corresponding downlink datas of DRS The transmission number of plies；

Or,

The DRS is referred in the resource mapping method of antenna port p：

8. method according to claim 7, it is characterised in that if also there is the transmission of other descending reference symbols, together In one time slot position, it is used for transmitting in the descending sub frame numbering of the OFDM symbol that the RE of DRS is located, with described other are descending The numbering of the OFDM symbol being located for the RE for transmitting other descending reference symbols in reference markss transmission subframe is different；Institute Stating other descending reference symbols includes cell dedicated reference symbols CRS, positioning reference markss PRS, channel condition information measurement Combined with one or more in reference markss CSI-RS.

9. method according to claim 7, it is characterised in that：

Or,

10. the method according to claim 7 or 8, it is characterised in that the descending sub frame is synchronous transmission of signal subframe.

11. methods according to claim 10, it is characterised in that before descending sub frame is received by antenna port p, should Method also includes：

Detection synchronizing signal, to obtain down-going synchronous.

12. methods according to claim 7 or 8, it is characterised in that be used for transmitting the RE institutes of DRS in the descending sub frame Resource Block RB, specifically include：

13. a kind of transmitting devices of downstream station dedicated reference symbol DRS, it is characterised in that include：

Resource mapping module, for according to DRS antenna port p resource mapping method, it would be desirable on antenna port p transmit DRS be mapped in descending sub frame for transmitting the Resource Unit RE of DRS；In same time slot position, in the descending sub frame It is used to transmit in the numbering of the orthogonal frequency division multiplex OFDM symbol being located for the RE for transmitting DRS, with synchronous transmission of signal subframe The numbering of the OFDM symbol that the RE of synchronizing signal is located is different；

Data transmission module, for transmitting the descending sub frame by the antenna port p；

Wherein：

The resource mapping module using the DRS refer in the resource mapping method of antenna port p：

If the descending sub frame is the conventional descending sub frame using conventional cyclic prefix CP, what the resource mapping module was used The DRS is specifically referred in the resource mapping method of antenna port p, special subframe configuration 3,4,8 in LTE-A Rel-10 systems The DRS resource mapping methods of the antenna port p under conventional CP, the conventional descending sub frame refer to that TDD system is normal Rule descending sub frame, or FDD system descending sub frame；

Or, if the descending sub frame is the TDD system routine descending sub frame using routine CP, the resource mapping module makes The DRS is specifically referred in the resource mapping method of antenna port p, in LTE-A Rel-10 systems special subframe configuration 1, 2nd, the DRS resource mapping methods of 6, the 7 antenna port p under conventional CP；

Or, if the descending sub frame is the TDD system routine descending sub frame using extension CP, the resource mapping module makes The DRS is specifically referred in the resource mapping method of antenna port p, in LTE-A Rel-10 systems special subframe configuration 1, 2nd, the DRS resource mapping methods of 3,5, the 6 antenna port p under extension CP；

Or, if the descending sub frame is the TDD system special subframe using routine CP, what the resource mapping module was used The DRS is specifically referred in the resource mapping method of antenna port p, and in LTE-A Rel-10 systems, conventional descending sub frame is in routine The DRS resource mapping methods of the antenna port p under CP；

Or,

14. devices according to claim 13, it is characterised in that if also transmitting other descending reference symbols, with for the moment In gap position, it is used for the numbering of the OFDM symbol at the RE places for transmitting DRS in the descending sub frame, with described other descending references It is used for the numbering difference of the OFDM symbol at the RE places for transmitting other descending reference symbols in symbol transmission subframe；It is described its His descending reference symbol includes cell dedicated reference symbols CRS, positioning reference markss PRS, channel condition information measurement ginseng Examine one or more combination in symbol CSI-RS.

15. devices according to claim 13, it is characterised in that：

As the antenna port p=5, when the descending sub frame is the FDD system descending sub frame using routine CP, the punching OFDM symbol is specifically referred to, last OFDM symbol for the even timeslots that the DRS resource mapping methods determine；

Or,

As the antenna port p=5, when the descending sub frame is the FDD system descending sub frame using extension CP, the punching OFDM symbol is specifically referred to, the penultimate OFDM symbol of the even timeslots that the DRS resource mapping methods determine；

Or,

16. devices according to claim 13 or 14, it is characterised in that the descending sub frame is synchronous transmission of signal Frame.

17. devices according to claim 16, it is characterised in that the resource mapping module is additionally operable to：

18. devices according to claim 13 or 14, it is characterised in that be used for transmitting the RE of DRS in the descending sub frame The Resource Block RB at place, specifically includes：

19. a kind of transmitting devices of downstream station dedicated reference symbol DRS, it is characterised in that include：

Data reception module, for receiving descending sub frame by antenna port p；

Descending reference symbol acquisition module, for according to DRS antenna port p resource mapping method, in the descending sub frame In obtain DRS on the Resource Unit RE of DRS for transmitting；In same time slot position, it is used for transmitting DRS's in the descending sub frame It is used for the RE institutes of synchronous signal transmission in the numbering of the orthogonal frequency division multiplex OFDM symbol that RE is located, with synchronous transmission of signal subframe OFDM symbol numbering it is different；

Wherein：

The descending reference symbol acquisition module using the DRS refer in the resource mapping method of antenna port p：

If the descending sub frame is the conventional descending sub frame using conventional cyclic prefix CP, the descending reference symbol obtains mould Block using the DRS specifically refer in the resource mapping method of antenna port p, in LTE-A Rel-10 systems, special subframe is matched somebody with somebody The DRS resource mapping methods of 3,4, the 8 antenna port p under conventional CP are put, the conventional descending sub frame refers to TDD System convention descending sub frame, or FDD system descending sub frame；

Or, if the descending sub frame is the TDD system routine descending sub frame using routine CP, the descending reference symbol is obtained Delivery block using the DRS specifically refer in the resource mapping method of antenna port p, special son in LTE-A Rel-10 systems Frame configures the DRS resource mapping methods of 1,2,6, the 7 antenna port p under conventional CP；

Or, if the descending sub frame is the TDD system routine descending sub frame using extension CP, the descending reference symbol is obtained Delivery block using the DRS specifically refer in the resource mapping method of antenna port p, special son in LTE-A Rel-10 systems Frame configures the DRS resource mapping methods of 1,2,3,5, the 6 antenna port p under extension CP；

Or, if the descending sub frame is the TDD system special subframe using routine CP, the descending reference symbol obtains mould Block using the DRS specifically refer in the resource mapping method of antenna port p, conventional descending son in LTE-A Rel-10 systems The DRS resource mapping methods of antenna port p of the frame under conventional CP；

Or,

20. devices according to claim 19, it is characterised in that if also there is the transmission of other descending reference symbols, In same time slot position, it is used for transmitting in the descending sub frame numbering of the OFDM symbol that the RE of DRS is located, with described under other The numbering of the OFDM symbol being located for the RE for transmitting other descending reference symbols in row reference markss transmission subframe is different； Described other descending reference symbols include that cell dedicated reference symbols CRS, positioning reference markss PRS, channel condition information are surveyed One or more combination of the amount in reference markss CSI-RS.

21. devices according to claim 19, it is characterised in that：

Or,

22. devices according to claim 19 or 20, it is characterised in that the descending sub frame is synchronous transmission of signal Frame.

23. devices according to claim 22, it is characterised in that also including synchronization signal detection module, be used for：

Before data reception module receives descending sub frame by antenna port p, synchronizing signal is detected, to obtain down-going synchronous.

24. devices according to claim 19 or 20, it is characterised in that be used for transmitting the RE of DRS in the descending sub frame The Resource Block RB at place, specifically includes：