CN101483466B

CN101483466B - Mapping method for customer special reference signal

Info

Publication number: CN101483466B
Application number: CN200910006305.2A
Authority: CN
Inventors: 罗宇民; 戴博; 郁光辉; 李卫军; 陈艺戬
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2009-02-06
Filing date: 2009-02-06
Publication date: 2014-04-30
Anticipated expiration: 2029-02-06
Also published as: CN101483466A

Abstract

The present invention discloses a method for mapping user-specific reference signal. In the method, the reference signal of logical antenna port #1 and logical antenna port #2 are mapped on four time domain symbols of physical resource block. Each time domain symbol in four time domain symbols is mapped with four reference signals; wherein, the frequency domain interval between adjacent reference signals mapped on a same time domain symbol is 3. By means of the invention, the mapped reference signal can be facilitated to support the PDSCH transmission of double antenna ports for guaranteeing the PDSCH transmission of double antenna ports. The problem that the system in related technique does not support the double flow beamforming technique is compensated, and the whole capability of system can be increased.

Description

The mapping method of customer special reference signal

Technical field

The present invention relates to the communications field, and especially, relate to a kind of mapping method of customer special reference signal.

Background technology

OFDM (Orthogonal Frequency Division Multiplexing, referred to as OFDM) be a kind of multi-carrier modulation communication technology on technological essence, this technology is one of core technology in the 4th third-generation mobile communication (referred to as 4G).On frequency domain, the multipath channel of OFDM presents frequency selective fading characteristic, in order to overcome this decline, channel need to be divided on frequency domain to a plurality of subchannels, the spectral characteristic of every sub-channels is near flat all, and each sub-channels of OFDM is mutually orthogonal, therefore allow the frequency spectrum of subchannel overlapped, thus can very large limit land productivity frequency spectrum resource.

Multiple-input and multiple-output (Multiple-Input Multiple-Output, referred to as MIMO) technology can increase power system capacity, improve transmission performance, and can merge with other physical-layer techniques well, therefore become the key technology of super 3G (Beyond 3G, referred to as B3G) and 4G.But in the situation that channel relevancy is strong, the diversity gain being brought by multipath channel and spatial multiplexing gain can reduce greatly, and then cause declining to a great extent of mimo system performance.

At present, for a kind of new MIMO method for precoding of the problem declining to a great extent proposition of above-mentioned mimo system performance, the method is a kind of efficient MIMO multiplex mode.In the method, can mimo channel be changed into a plurality of independently pseudo channels by the precoding processing of sending and receiving end.Because the method can effectively be eliminated the impact of channel relevancy, so this precoding technique can guarantee the stability of mimo system under various environment.

In addition, conventionally wave beam forming (Beamforming) technology and the MIMO technology that adopt are at present closely related, wave beam forming technology can compensate signal fadeout and the distortion being caused by factors such as space loss, multipath effects in radio transmission process, can reduce the interference between co-channel users simultaneously; In addition, by adopting wave beam forming technology can also effectively increase network capacity.

In Long Term Evolution (Long Term Evolution, referred to as LTE) system, it is the essential planning of third generation partnership.As shown in Figure 1a, when the Cyclic Prefix of system adopts regular circulation prefix, a Physical Resource Block consists of strange time slot and even time slot, and the up/down row symbol that each time slot comprises 7 length, now, the mapping position of customer special reference signal in Physical Resource Block can be with reference to the R5 shown in Fig. 1 a.As shown in Figure 1 b, when the Cyclic Prefix of system adopts extended cyclic prefix, a Physical Resource Block consists of strange time slot and even time slot, and the up/down row symbol that each time slot comprises 6 length, now, the mapping position of customer special reference signal in Physical Resource Block can be with reference to the R5 shown in Fig. 1 b.

In LTE system, a Resource Unit (Resource Element, referred to as RE) be a subcarrier in an OFDM symbol, and a downlink resource piece (ResourceBlock, referred to as RB) by continuous 12 subcarriers and continuous 7 (being 6 in the time of extended cyclic prefix) OFDM symbols, formed, on frequency domain, being 180kHz, is the time span of a general time slot in time domain.In resource, divide timing, Resource Block can be distributed as base unit.

Conventionally, LTE system is supported the MIMO application of 4 antennas, also support the wave beam forming technology of single codeword (Single Codeword) single current (Single Stream) simultaneously,, can support Physical Shared Channel (Physical downlink sharedchannel, referred to as the PDSCH) transmission of single antenna port.Wherein, customer special reference signal (UE-specificreference signals) is for supporting the PDSCH transmission of single antenna port.

LTE-Advanced (Further Advancements for E-UTRA, referred to as LTE-A) is the evolution version of LTE Release-8.Except meeting or surpassing 3GPP TR25.913: all related needs of " Requirements for Evolved UTRA (E-UTRA) and EvolvedUTRAN (E-UTRAN) ", also to meet or exceed the demand of the IMT-Advanced (International MobileTelecommunications-Advanced, referred to as IMT-Advanced) of ITU-R proposition.Wherein, refer to the demand of LTE Release-8 backward compatibility: the terminal of LTE Release-8 can be worked in the network of LTE-Advanced; The terminal of LTE-Advanced also can be worked in the network of LTE Release-8.

In addition, for to reach higher performance and target peak speed, also need LTE-Advanced for example, under the spectrum disposition (comprising the spectrum disposition wider than LTE Release-8 (, the continuous frequency spectrum resource of 100MHz)) of different sizes, to work.Because LTE-Advanced network needs to access LTE user, so its operational frequency bands need to cover the LTE frequency band of current employing, yet, in this frequency range, there is not the spectral bandwidth of assignable continuous 100MHz.So the problem that LTE-Advanced need to solve is exactly that several continuous component carrier frequency (frequency spectrum) (being called Component carrier) that are distributed on different frequency range are aggregating and form the operable 100MHz bandwidth of LTE-Advanced.That is to say, for the frequency spectrum after assembling, the frequency spectrum being divided in each component carrier frequency (frequency spectrum) in n component carrier frequency (frequency spectrum) (Component carrier) is continuous.

The clear and definite descending application that can support at most 8 antennas of LTE-Advanced in the demand research report TR 36.814V0.1.1 of the LTE-Advanced proposing in September, 2008, but, for how making the descending support dual-stream beamforming of LTE-Advanced technology,, support to adopt the PDSCH transmission of double antenna port, not yet propose at present effective solution.

Summary of the invention

Consider and in correlation technique, cannot make the problem of the descending support dual-stream beamforming of LTE-Advanced technology and make the present invention, for this reason, main purpose of the present invention is to provide a kind of mapping scheme of customer special reference signal.

According to embodiments of the invention, provide a kind of mapping method of customer special reference signal, for shine upon the reference signal of logical antenna ports #1 and logical antenna ports #2 on Physical Resource Block.

According in the mapping method of customer special reference signal of the present invention, the reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 4 time-domain symbol of Physical Resource Block, shines upon 4 reference signals in each time-domain symbol in 4 time-domain symbol; The frequency domain interval of the adjacent reference signal of wherein, shining upon in identical time-domain symbol is 3.

According to a further aspect in the invention, provide a kind of mapping method of customer special reference signal, for shine upon the reference signal of logical antenna ports #1 and logical antenna ports #2 on Physical Resource Block.

According in the mapping method of customer special reference signal of the present invention, the reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 4 time-domain symbol of Physical Resource Block, in each time-domain symbol, shine upon 3 reference signals, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 4; Or the reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 3 time-domain symbol of Physical Resource Block, shines upon 4 reference signals in each time-domain symbol, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 3; Or the reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 2 time-domain symbol of Physical Resource Block, shines upon 6 reference signals in each time-domain symbol, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 2.

According in the mapping method of customer special reference signal of the present invention, the reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 2 time-domain symbol of Physical Resource Block, in each time-domain symbol, shine upon 4 reference signals, the frequency domain interval of the adjacent reference signal of the mapping in identical time-domain symbol is 3; Or the reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 4 time-domain symbol of Physical Resource Block, shines upon 2 reference signals in each time-domain symbol, the frequency domain interval of the adjacent reference signal of the mapping in identical time-domain symbol is 6.

By means of technique scheme of the present invention, by defining the physical resource mapping position of reference signal and shining upon, can make the reference signal of mapping support the PDSCH of double antenna port to transmit, to guarantee the use of the PDSCH transmission of double antenna port, the system in correlation technique filled up is not supported the problem of dual-stream beamforming technology, can improve the overall performance of system.

Accompanying drawing explanation

Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 a is the schematic diagram that adopts customer special reference signal mapping position in Physical Resource Block in the situation of regular circulation prefix in correlation technique;

Fig. 1 b is the schematic diagram that adopts customer special reference signal mapping position in Physical Resource Block in the situation of extended cyclic prefix in correlation technique;

Fig. 2 a is according to the mapping schematic diagram of the processing example 1 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 2 b is according to the mapping schematic diagram of the processing example 2 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 2 c is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 3 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 2 d is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 3 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 2 e is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 4 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 2 f is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 4 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 3 a is according to the mapping schematic diagram of the processing example 5 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 3 b is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 6 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 3 c is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 6 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 3 d is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 7 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 3 e is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 7 of the mapping method of the customer special reference signal of the inventive method embodiment mono-;

Fig. 4 a is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 8 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 4 b is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 8 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 5 a is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 9 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 5 b is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 9 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 5 c is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 10 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 5 d is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 10 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 5 e is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 11 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 5 f is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 11 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 5 g is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 12 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 5 h is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 13 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 6 a is according to the mapping schematic diagram in the processing example 14 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 6 b is according to the mapping schematic diagram in the processing example 15 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 6 c is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 16 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 6 d is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 16 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 6 e is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 17 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 6 f is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 17 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 7 a is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 18 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 7 b is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 18 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 7 c is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 19 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 7 d is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 19 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 7 e is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 20 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 7 f is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 20 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 7 g is according to the mapping schematic diagram of the processing example 21 of the mapping method of the customer special reference signal of the inventive method embodiment bis-;

Fig. 8 a is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 22 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Fig. 8 b is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 22 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Fig. 8 c is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 23 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Fig. 8 d is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 23 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Fig. 8 e is according to the mapping schematic diagram of the processing example 24 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Fig. 9 a is according to the mapping schematic diagram of the processing example 25 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Fig. 9 b is according to the mapping schematic diagram of the processing example 26 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Fig. 9 c is according to the mapping schematic diagram of the processing example 27 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Fig. 9 d is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 28 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Fig. 9 e is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 28 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Figure 10 a is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 29 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Figure 10 b is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 29 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Figure 10 c is according to the mapping schematic diagram in regular circulation prefix situation in the processing example 30 of the mapping method of the customer special reference signal of the inventive method embodiment tri-;

Figure 10 d is according to the mapping schematic diagram in extended cyclic prefix situation in the processing example 30 of the mapping method of the customer special reference signal of the inventive method embodiment tri-.

Embodiment

Functional overview

For the problem that cannot make the descending support dual-stream beamforming of LTE-Advanced technology in correlation technique, the present invention proposes logical antenna ports #1 and logical antenna ports #2 are shone upon to the mapping scheme of 16,12,8 reference signals in Physical Resource Block, make the transmission of pilot tone can support dual-stream beamforming technology, thereby solve the problem existing in correlation technique.

Below in conjunction with instantiation, describe and adopt according to the various mapping modes of reference information after reference signal mapping method of the present invention.Wherein, in Fig. 2 to Figure 10 of following description institute reference, the lateral coordinates of Physical Resource Block is time domain, increase successively from left to right, ordinate is frequency domain, increases successively from top to bottom, and, even-numbered slots in figure represents even time slot, and this time slot is hereinafter also referred to as the first time slot; Odd-numbered slots represents strange time slot, and this time slot is hereinafter also referred to as the second time slot, and the R in figure ₈the reference signal of presentation logic antenna port #1 mapping, R ₉the reference signal of presentation logic antenna port #2 mapping.And the reference signal frequency domain position of each antenna logic port can change along with the change of cell ID in figure, and relative position relation between the reference signal of each antenna logic port is constant; In addition, lateral coordinates shown in figure is that time domain, ordinate are frequency domain, this time-frequency coordinate is only an example, in order to describe the anti-mode of mapping according to the present invention, can adopt equally the time-frequency coordinate system of other form, for example, can adopt lateral coordinates is the time-frequency coordinate that frequency domain, ordinate are time domain.

Wherein, logical antenna ports #1 hereinafter and logical antenna ports #2 are for representing two logical antenna ports of dual-stream beamforming technology, and its numbering does not have any physical significance, only for distinguishing this two logical antenna ports.Time-domain symbol hereinafter can be OFDM symbol, and reference signal is customer special reference signal.And, the reference signal of logical antenna ports #1 and logical antenna ports #2 is for supporting the transmission of the shared bandwidth of Physical Downlink Shared Channel of double antenna port, and only in the Physical Resource Block of mapped Physical Downlink Shared Channel, transmit, and mapping is processed and need to be carried out according to the transmission of data, that is, need to transmit the reference signal of mapping logic antenna port in the Resource Block of data.

Embodiment of the method 1

In the present embodiment, provide a kind of mapping method of customer special reference signal, for shine upon the reference signal of logical antenna ports #1 and logical antenna ports #2 on Physical Resource Block.

According in the method for the present embodiment, the reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 4 time-domain symbol of Physical Resource Block, shines upon 4 reference signals in each time-domain symbol; The frequency domain interval of the adjacent reference signal of wherein, shining upon in identical time-domain symbol is 3.

The mapping mode of the present embodiment is described below in conjunction with instantiation.

At example 1, to example 7, the mode of shining upon 16 reference signals in Physical Resource Block has been described.

Example 1

Fig. 2 a shows in this example, the mapping position of reference signal in Physical Resource Block.

As shown in Figure 2 a, in the system of regular circulation prefix, the reference signal of logical antenna ports #1 is present in each Resource Block on the 4th symbol of the first time slot of time domain and the 3rd symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 3, the section start that reference signal on the 4th symbol of the first time slot is Resource Block at the initial position of frequency domain, reference signal on frequency domain the interval 2 of the reference signal on the 3rd symbol of the second time slot on the initial position of frequency domain and the 4th symbol of the first time slot;

The reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of the first time slot of time domain and the penultimate symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 3, the section start that reference signal on the penultimate symbol of the second time slot is Resource Block at the initial position of frequency domain, the reference signal interval 2 on frequency domain on the initial position of the reference signal on last symbol of the first time slot and the penultimate symbol of the second time slot.

Example 2

Fig. 2 b shows in this example, the mapping position of reference signal in Physical Resource Block.

As shown in Figure 2 b, in the system of regular circulation prefix, the reference signal of logical antenna ports #1 is present in each Resource Block on the 4th symbol of the first time slot of time domain and the 3rd symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 3, the section start that reference signal on the 4th symbol of the first time slot is Resource Block at the initial position of frequency domain, reference signal on frequency domain the interval 2 of the reference signal on the 3rd symbol of the second time slot on the initial position of frequency domain and the 4th symbol of the first time slot;

The reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of the first time slot of time domain and the penultimate symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 3, the section start that reference signal on last symbol of the first time slot is Resource Block at the initial position of frequency domain, reference signal on frequency domain the interval 2 of the reference signal on last symbol of the first time slot on the initial position of frequency domain and the penultimate symbol of the second time slot.

Example 3

In this example, the reference signal of logical antenna ports #1 is present in each Resource Block on the penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 3, the section start that reference signal is Resource Block at the initial position of frequency domain;

The reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of each time slot of time domain, between adjacent reference signal, is spaced apart 3 on frequency domain, the section start that reference signal is Resource Block at the initial position of frequency domain.

As shown in Figure 2 c, when Cyclic Prefix is regular circulation prefix, the mapping position of reference signal in Physical Resource Block is: R ₈and R ₉lay respectively at time-domain position of latter two OFDM symbol of even time slot in time domain and strange time slot, on prosign, between adjacent reference signal, on frequency domain, be spaced apart 3, and the section start that is Resource Block at the initial position of frequency domain; As shown in Figure 2 d, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is: R ₈and R ₉lay respectively at time-domain position of latter two OFDM symbol of even time slot in time domain and strange time slot, on prosign, between adjacent reference signal, on frequency domain, be spaced apart 3, the section start that is Resource Block at the initial position of frequency domain.

Example 4

The reference signal of logical antenna ports #1 is present in each Resource Block on the penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 3, the section start that reference signal on the first time slot is Resource Block at the initial position of frequency domain, the reference signal on the second time slot is at initial position and the interval 2 on frequency domain of the reference signal on the first time slot of frequency domain;

The reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 3, the section start that reference signal on the first time slot is Resource Block at the initial position of frequency domain, reference signal on the second time slot is at initial position and the interval 2 on frequency domain of the reference signal on the first time slot of frequency domain, that is to say, the difference of the mapping mode of this example and a upper example is: at different time-gap R ₈and R ₉frequency domain original position will change, but in each time slot R ₈and R ₉frequency domain original position still keep identical.

As shown in Figure 2 e, when Cyclic Prefix is regular circulation prefix, the mapping position of reference signal in Physical Resource Block is: R ₈and R ₉lay respectively at time-domain position of latter two OFDM of even time slot in time domain and strange time slot, and in the first time slot, R ₈and R ₉the initial position of the frequency domain section start that is Resource Block, in the second time slot, R ₈and R ₉the initial position of frequency domain and the frequency domain interval of the reference signal on the first time slot be 2; As shown in Fig. 2 f, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is: R ₈and R ₉lay respectively at time-domain position of latter two OFDM of even time slot in time domain and strange time slot, and in the first time slot, R ₈and R ₉the initial position of the frequency domain section start that is Resource Block, in the second time slot, R ₈and R ₉the initial position of frequency domain and the reference signal on the first time slot on frequency domain, be spaced apart 2.

Example 5

As shown in Figure 3 a, in this example, in the system of regular circulation prefix, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block at the 4th symbol and last symbol of the first time slot of time domain, on the 3rd symbol and penultimate symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 3, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of the first time slot is Resource Block at the initial position of frequency domain, the reference signal of the second time slot is spaced apart 2 in the initial position of frequency domain and the reference signal of the first time slot on frequency domain.

Example 6

In this example, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on last symbol and penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 3, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain;

When Cyclic Prefix is regular circulation prefix, as shown in Figure 3 b, the mapping position of reference signal in Physical Resource Block is identical with the mapping position in Fig. 2 c for the mapping position of reference signal in Physical Resource Block, and difference is R ₈with R ₉all staggered mappings on frequency-domain and time-domain; When Cyclic Prefix is extended cyclic prefix, as shown in Figure 3 c, wherein, the mapping position of reference signal in Physical Resource Block is identical with the mapping position in Fig. 2 d for the mapping position of reference signal in Physical Resource Block, and difference is R ₈with R ₉all staggered mappings on frequency-domain and time-domain.

Example 7

The reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on last symbol and penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 3, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of the first time slot is Resource Block at the initial position of frequency domain, the reference signal of the second time slot is at the reference signal interval 2 of initial position and first time slot of frequency domain;

Particularly, when Cyclic Prefix is regular circulation prefix, as shown in Figure 3 d, the mapping position of reference signal in Physical Resource Block is identical with the mapping position in Fig. 2 e for the mapping position of reference signal in Physical Resource Block, and difference is R ₈with R ₉all staggered mappings on frequency-domain and time-domain; When Cyclic Prefix is extended cyclic prefix, as shown in Figure 3 e, wherein, the mapping position of reference signal in Physical Resource Block is identical with the mapping position in Fig. 2 f for the mapping position of reference signal in Physical Resource Block, and difference is R ₈with R ₉all staggered mappings on frequency-domain and time-domain.

By above-mentioned processing, can make the reference signal of mapping support the PDSCH of double antenna port to transmit, guaranteeing the use of the PDSCH transmission of double antenna port, the system in correlation technique filled up is not supported the problem of dual-stream beamforming technology, can improve the overall performance of system.

Embodiment of the method two

According in the mapping method of the customer special reference signal of the present embodiment, the reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 4 time-domain symbol of Physical Resource Block, in each time-domain symbol, shine upon 3 reference signals, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 4; Or

The reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 3 time-domain symbol of Physical Resource Block, shines upon 4 reference signals in each time-domain symbol, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 3; Or

The reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 2 time-domain symbol of Physical Resource Block, shines upon 6 reference signals in each time-domain symbol, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 2.

At example 8, to example 21, the mode of shining upon 12 reference signals in Physical Resource Block has been described.

Example 8

Fig. 4 a shows in this example, the mapping position of reference signal in Physical Resource Block.

As shown in Fig. 4 a, in the system of regular circulation prefix, the reference signal of logical antenna ports #1 and logical antenna ports #2 is all present in each Resource Block on the 3rd symbol and penultimate symbol of the 4th symbol of the first time slot of time domain and last symbol and the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 4, the reference signal of the 4th symbol of the first time slot and the 3rd symbol of the second time slot is the section start of Resource Block at the initial position of frequency domain, the reference signal of last symbol of the first time slot is 2 in the frequency domain interval of the reference signal of the initial position of frequency domain and the 4th symbol of the first time slot, the reference signal of the penultimate symbol of the second time slot is at the reference signal interval 2 of the initial position of frequency domain and the 3rd symbol of the second time slot, the reference signal frequency-domain and time-domain position of the reference signal of logical antenna ports #1 and logical antenna ports #2 is identical, by the reference signal of two antenna ports of code division multiplexing.

Fig. 4 b shows in this example, the mapping position of reference signal in Physical Resource Block.

As shown in Figure 4 b, in the system of extended cyclic prefix, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on second symbol and penultimate symbol of the penultimate symbol of the first time slot of time domain and the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 3, the section start that the reference signal of the penultimate symbol of the first time slot and the penultimate symbol of the second time slot is Resource Block at the initial position of frequency domain, the reference signal of second symbol of the second time slot is at the reference signal interval 2 of the initial position of frequency domain and the penultimate symbol of the first time slot, the reference signal frequency domain position of the reference signal of logical antenna ports #1 and logical antenna ports #2 is identical, by the reference signal of two antenna ports of code division multiplexing.

Example 9

In Physical Resource Block in the even time slot of time domain and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on last symbol of every time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 2, the section start that the reference signal of last symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal of last symbol of the second time slot is at the reference signal interval 1 of the initial position of frequency domain and last symbol of the first time slot, the reference signal frequency domain position of the reference signal of logical antenna ports #1 and logical antenna ports #2 is identical, by the reference signal of two antenna ports of code division multiplexing,

Particularly, when Cyclic Prefix is regular circulation prefix, as shown in Figure 5 a, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block as shown in Figure 5 b for the mapping position of reference signal in Physical Resource Block.

Example 10

In the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on the penultimate symbol of every time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 2, the section start that the reference signal of the penultimate symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal of the penultimate symbol of the second time slot is at the reference signal interval 1 of the initial position of frequency domain and the penultimate symbol of the first time slot, the reference signal frequency domain position of the reference signal of logical antenna ports #1 and logical antenna ports #2 is identical, by the reference signal of two antenna ports of code division multiplexing, particularly, when Cyclic Prefix is regular circulation prefix, as shown in Figure 5 c, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 5 d for the mapping position of reference signal in Physical Resource Block.

Example 11

In the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on last symbol of the first time slot of time domain and the penultimate symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 2, the section start that the reference signal of last symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal of the penultimate symbol of the second time slot is at the reference signal interval 1 of the initial position of frequency domain and last symbol of the first time slot, the reference signal frequency domain position of the reference signal of logical antenna ports #1 and logical antenna ports #2 is identical, by the reference signal of two antenna ports of code division multiplexing.Particularly, when Cyclic Prefix is regular circulation prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 5 e, and when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 5 f.

Example 12

As Fig. 5 g shows in this example, the mapping position of reference signal in Physical Resource Block.In the system of regular circulation prefix, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on the 4th symbol of every time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 2, the section start that the reference signal of the 4th symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal of the 4th symbol of the second time slot is at the reference signal interval 1 of the initial position of frequency domain and the 4th symbol of the first time slot, the reference signal frequency domain position of the reference signal of logical antenna ports #1 and logical antenna ports #2 is identical, by the reference signal of two antenna ports of code division multiplexing.

Example 13

As Fig. 5 h shows in this example, the mapping position of reference signal in Physical Resource Block.In the system of regular circulation prefix, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on the 4th symbol of the first time slot of time domain and the 3rd symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 2, the section start that the reference signal of the 4th symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal of the 3rd symbol of the second time slot is at the reference signal interval 1 of the initial position of frequency domain and the 4th symbol of the first time slot, the reference signal frequency domain position of the reference signal of logical antenna ports #1 and logical antenna ports #2 is identical, by the reference signal of two antenna ports of code division multiplexing.

Example 14

As Fig. 6 a shows in this example, the mapping position of reference signal in Physical Resource Block.In the system of regular circulation prefix, the reference signal of logical antenna ports #1 is present in each Resource Block on the 4th symbol of the first time slot of time domain and the 3rd symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 4, the section start that reference signal on the 4th symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal interval 2 of the reference signal on the 3rd symbol of the second time slot on the initial position of frequency domain and the 4th symbol of the first time slot;

The reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of the first time slot of time domain and the penultimate symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 4, the section start that reference signal on the penultimate symbol of the second time slot is Resource Block at the initial position of frequency domain, the reference signal interval 2 on the initial position of the reference signal on last symbol of the first time slot and the penultimate symbol of the second time slot.

Example 15

As Fig. 6 b shows in this example, the mapping position of reference signal in Physical Resource Block.In the system of regular circulation prefix, the reference signal of logical antenna ports #1 is present in each Resource Block on the 4th symbol of the first time slot of time domain and the 3rd symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 4, the section start that reference signal on the 4th symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal interval 2 of the reference signal on the 3rd symbol of the second time slot on the initial position of frequency domain and the 4th symbol of the first time slot;

The reference signal of logical antenna ports #2 is present in each Resource Block on the penultimate symbol of the first time slot of time domain and the 3rd symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 4, the section start that reference signal on the penultimate symbol of the first time slot is Resource Block at the initial position of frequency domain, the initial position of reference signal on the 3rd symbol of the second time slot and the reference signal interval 2 on the penultimate symbol of the first time slot.

Example 16

In the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 is present in each Resource Block on the penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 4, the section start that reference signal is Resource Block at the initial position of frequency domain;

And the reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of each time slot of time domain, is spaced apart 4 between adjacent reference signal on frequency domain, the section start that reference signal is Resource Block at the initial position of frequency domain.

Particularly, when Cyclic Prefix is regular circulation prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 6 c, and when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 6 d.

Example 17

The even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 is present in each Resource Block on the penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 4, the section start that reference signal on the first time slot is Resource Block at the initial position of frequency domain, the reference signal on the second time slot is at the initial position of frequency domain and the reference signal interval 2 on the first time slot;

The reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 4, the section start that reference signal on the first time slot is Resource Block at the initial position of frequency domain, the reference signal on the second time slot is at the initial position of frequency domain and the reference signal interval 2 on the first time slot.

Particularly, when Cyclic Prefix is regular circulation prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 6 e, and when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block as shown in Figure 6 f.

Example 18

The even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on last symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 2, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain.

Particularly, when Cyclic Prefix is regular circulation prefix, as shown in Figure 7a, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block as shown in Figure 7b for the mapping position of reference signal in Physical Resource Block.

Example 19

In the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on the penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 2, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain.

Particularly, when Cyclic Prefix is regular circulation prefix, as shown in Figure 7 c, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 7 d for the mapping position of reference signal in Physical Resource Block.

Example 20

In the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on last symbol of first time slot of time domain and the penultimate symbol of second time slot, between adjacent reference signal, on frequency domain, be spaced apart 2, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain.

Particularly, when Cyclic Prefix is regular circulation prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 7 e, and when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 7 f.

Example 21

As Fig. 7 g shows in this example, the mapping position of reference signal in Physical Resource Block.In the system of regular circulation prefix, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on the 4th symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 2, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain.

Embodiment of the method three

According in the mapping method of the customer special reference signal of the present embodiment, the reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 2 time-domain symbol of Physical Resource Block, in each time-domain symbol, shine upon 4 reference signals, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 3; Or

The reference signal of shining upon logical antenna ports #1 and logical antenna ports #2 in 4 time-domain symbol of Physical Resource Block, shines upon 2 reference signals in each time-domain symbol, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 6.

At example 22, to example 30, the mode of shining upon 8 reference signals in Physical Resource Block has been described.

Example 22

On the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on last symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 3, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain.

Particularly, when Cyclic Prefix is regular circulation prefix, as shown in Figure 8 a, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block as shown in Figure 8 b for the mapping position of reference signal in Physical Resource Block.

Example 23

On the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on the penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 3, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain.

Particularly, when Cyclic Prefix is regular circulation prefix, as shown in Figure 8 c, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 8 d for the mapping position of reference signal in Physical Resource Block.

Example 24

As Fig. 8 e shows in this example, the mapping position of reference signal in Physical Resource Block.In the system of regular circulation prefix, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on the 4th symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 3, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the section start that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain.

Example 25

As Fig. 9 a shows in this example, the mapping position of reference signal in Physical Resource Block.In the system of regular circulation prefix, the reference signal of logical antenna ports #1 is present in each Resource Block on the 4th symbol of the first time slot of time domain and the 3rd symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 6, the section start that reference signal on the 4th symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal interval 3 of the reference signal on the 3rd symbol of the second time slot on the initial position of frequency domain and the 4th symbol of the first time slot;

The reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of the first time slot of time domain and the penultimate symbol of the second time slot, between adjacent reference signal, on frequency domain, be spaced apart 6, the section start that reference signal on the penultimate symbol of the second time slot is Resource Block at the initial position of frequency domain, the reference signal interval 3 on the initial position of the reference signal on last symbol of the first time slot and the penultimate symbol of the second time slot.

Example 26

As Fig. 9 b shows in this example, the mapping position of reference signal in Physical Resource Block.In the system of regular circulation prefix, the reference signal of logical antenna ports #1 is present in each Resource Block on the 4th symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 6, the section start that reference signal on the 4th symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal interval 3 of the reference signal on the 4th symbol of the second time slot on the initial position of frequency domain and the 4th symbol of the first time slot;

The reference signal of logical antenna ports #2 is present in each Resource Block on the penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 6, the section start that reference signal on the penultimate symbol of the second time slot is Resource Block at the initial position of frequency domain, the reference signal interval 3 on the initial position of the reference signal on the penultimate symbol of the first time slot and the penultimate symbol of the second time slot.

Example 27

As Fig. 9 c shows in this example, the mapping position of reference signal in Physical Resource Block.In the system of regular circulation prefix, the reference signal of logical antenna ports #1 is present in each Resource Block on the 4th symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 6, the section start that reference signal on the 4th symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal interval 3 of the reference signal on the 4th symbol of the second time slot on the initial position of frequency domain and the 4th symbol of the first time slot;

The reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 6, the section start that reference signal on last symbol of the second time slot is Resource Block at the initial position of frequency domain, the reference signal interval 3 on the initial position of the reference signal on last symbol of the first time slot and last symbol of the second time slot.

Example 28

On the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 is present in each Resource Block on the penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 6, the section start that reference signal on the penultimate symbol of the first time slot is Resource Block at the initial position of frequency domain, the reference signal interval 3 of the reference signal on the penultimate symbol of the second time slot on the initial position of frequency domain and the penultimate symbol of the first time slot;

And, the reference signal of logical antenna ports #2 is present in each Resource Block on last symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 6, the section start that reference signal on last symbol of the second time slot is Resource Block at the initial position of frequency domain, the reference signal interval 3 on the initial position of the reference signal on last symbol of the first time slot and last symbol of the second time slot;

Particularly, when Cyclic Prefix is regular circulation prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 9 d, and when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is as shown in Fig. 9 e.

Example 29

On the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on last symbol and penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 6, the fourth line that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain, the reference signal of logical antenna ports #1 and logical antenna ports #2 is by Walsh code code division multiplexing;

Particularly, when Cyclic Prefix is regular circulation prefix, the mapping position of reference signal in Physical Resource Block is as shown in Figure 10 a, and when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is as shown in Figure 10 b.

Example 30

On the even time slot of the time domain in Physical Resource Block and strange time slot, the reference signal of logical antenna ports #1 and logical antenna ports #2 is present in each Resource Block on last symbol and penultimate symbol of each time slot of time domain, between adjacent reference signal, on frequency domain, be spaced apart 6, the section start that the reference signal of logical antenna ports #1 and logical antenna ports #2 is Resource Block at the initial position of frequency domain, the reference signal of logical antenna ports #1 and logical antenna ports #2 is by Walsh code code division multiplexing;

Particularly, when Cyclic Prefix is regular circulation prefix, the mapping position of reference signal in Physical Resource Block is as shown in Figure 10 c, and when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is as shown in Figure 10 d.

It should be noted that, at the left and right two parts shown in Figure 10 a to 10d, it is Same Physical Resource Block, just for object clearly, Same Physical Resource Block is divided into two parts to be illustrated, the reference signal of left-hand component mapping logic antenna port #1, the reference signal of right-hand component mapping logic antenna port #2, and the reference signal of mapping logic antenna port #1 has identical time-frequency domain position with the reference signal of logical antenna ports #2, but can pass through the reference signal of multiplexing these two ports of mode of code division multiplexing, and by corresponding suitable Walsh code respectively demodulation shine upon the signal of these two logical antenna ports.

In sum, the present invention is by defining the physical resource mapping position of reference signal and shining upon, can make the reference signal of mapping support the PDSCH of double antenna port to transmit, to guarantee the use of the PDSCH transmission of double antenna port, the system in correlation technique filled up is not supported the problem of dual-stream beamforming technology, can improve the overall performance of system.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a mapping method for customer special reference signal, for shine upon the reference signal of logical antenna ports #1 and logical antenna ports #2 on Physical Resource Block, is characterized in that,

The reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block, shines upon 4 reference signals in each time-domain symbol in described 4 time-domain symbol;

The frequency domain interval of the adjacent reference signal of wherein, shining upon in identical time-domain symbol is 3;

Wherein, described 4 time-domain symbol comprise: the first time-domain symbol, the second time-domain symbol, the 3rd time-domain symbol, the 4th time-domain symbol.

2. method according to claim 1, is characterized in that,

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped in the time-domain symbol of different time domain position of described Physical Resource Block.

3. method according to claim 2, is characterized in that,

The reference signal of described logical antenna ports #1 is mapped to the first time-domain symbol and the 3rd time-domain symbol in described 4 time-domain symbol, and the reference signal of described logical antenna ports #2 is mapped to the second time-domain symbol and the 4th time-domain symbol in described 4 time-domain symbol; Or

The reference signal of described logical antenna ports #1 is mapped to the second time-domain symbol and the 4th time-domain symbol in described 4 time-domain symbol, and the reference signal of described logical antenna ports #2 is mapped to the first time-domain symbol and the 3rd time-domain symbol in described 4 time-domain symbol.

4. method according to claim 2, is characterized in that,

In the system of regular circulation prefix, the reference signal of described logical antenna ports #1 is mapped in the 4th time-domain symbol of first time slot of described Physical Resource Block in described time domain and the 3rd time-domain symbol of the second time slot, wherein, reference signal in the 4th time-domain symbol of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal in the 3rd time-domain symbol of described the second time slot in the initial position of frequency domain and the 4th time-domain symbol of described the first time slot is at the initial position interval 2 of frequency domain;

The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in last time-domain symbol of the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, reference signal in the time-domain symbol second from the bottom of described the second time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal in last time-domain symbol of described the first time slot in the initial position of frequency domain and the time-domain symbol second from the bottom of described the second time slot is at the initial position interval 2 of frequency domain.

5. method according to claim 2, is characterized in that,

The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in last time-domain symbol of the first time slot of described time domain and the time-domain symbol second from the bottom of described the second time slot, wherein, reference signal in last time-domain symbol of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal in last time-domain symbol of described the first time slot in the initial position of frequency domain and the time-domain symbol second from the bottom of described the second time slot is at the initial position interval 2 of frequency domain.

6. method according to claim 2, is characterized in that,

The reference signal of described logical antenna ports #1 is mapped to described Physical Resource Block in the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, and the initial position of the reference signal of the described logical antenna ports #1 of mapping on frequency domain determined by cell ID;

The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot, and the reference signal of the described logical antenna ports #2 of mapping is determined by cell ID at the initial position of frequency domain.

7. method according to claim 2, is characterized in that,

The reference signal of described logical antenna ports #1 is mapped to described Physical Resource Block in the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, reference signal on described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal on described the second time slot is the initial position interval 2 at frequency domain in the initial position of frequency domain and the reference signal on described the first time slot;

The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot, wherein, reference signal on described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal on described the second time slot is the initial position interval 2 at frequency domain in the initial position of frequency domain and the reference signal on described the first time slot.

8. method according to claim 1, is characterized in that, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped on the symbol of identical time domain.

9. method according to claim 8, is characterized in that,

In being mapped with the time domain of reference signal, the reference signal of the described logical antenna ports #1 shining upon in the first time-domain symbol and the 3rd time-domain symbol is positioned at the first frequency domain position and the 3rd frequency domain position on frequency domain, and the reference signal of the described logical antenna ports #2 shining upon in described the first time-domain symbol and described the 3rd time-domain symbol is positioned at the second frequency domain position and the 4th frequency domain position on frequency domain; Or

In being mapped with the time domain of reference signal, the reference signal of the described logical antenna ports #1 shining upon in the second time-domain symbol and the 4th time-domain symbol is positioned at described the second frequency domain position and described the 4th frequency domain position on frequency domain, and the reference signal of the described logical antenna ports #2 shining upon in described the second time-domain symbol and described the 4th time-domain symbol is positioned at described the first frequency domain position and described the 3rd frequency domain position on frequency domain;

Wherein, described the first frequency domain position, described the second frequency domain position, described the 3rd frequency domain position and described the 4th frequency domain position increase successively on frequency domain.

10. method according to claim 9, is characterized in that,

In the system of regular circulation prefix, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped to described Physical Resource Block in the 4th time-domain symbol and last time-domain symbol of the first time slot of described time domain, and be mapped to described Physical Resource Block in the 3rd time-domain symbol and time-domain symbol second from the bottom of the second time slot of described time domain, wherein, the reference signal of described the first time slot is determined by cell ID at the initial position of frequency domain, the reference signal of described the second time slot is the initial position interval 2 at frequency domain in the initial position of frequency domain and the reference signal of described the first time slot, or

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot and time-domain symbol second from the bottom, wherein, the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 are determined by cell ID at the initial position of frequency domain; Or

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot and time-domain symbol second from the bottom, wherein, the reference signal of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of described the second time slot is the initial position interval 2 at frequency domain in the initial position of frequency domain and the reference signal of the first time slot.

11. according to the method described in any one in claim 1 to 10, it is characterized in that, the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is for to be configured according to component carrier frequency the reference signal obtaining, or for to be configured according to subframe the reference signal obtaining.

12. according to the method described in any one in claim 1 to 10, it is characterized in that, described the first time-domain symbol, described the second time-domain symbol, described the 3rd time-domain symbol and described the 4th time-domain symbol increase progressively successively in the time domain of described Physical Resource Block, and are OFDM symbol.

13. according to the method described in any one in claim 1 to 10, it is characterized in that, the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is for supporting the transmission of the shared bandwidth of Physical Downlink Shared Channel of double antenna port, and only in the Physical Resource Block of mapped Physical Downlink Shared Channel, transmits.

14. according to the method described in any one in claim 1 to 10, it is characterized in that, the data of transmission are shone upon the reference signal of described logical antenna ports #1 and described logical antenna ports #2 on described Physical Resource Block as required.

The mapping method of 15. 1 kinds of customer special reference signals, for shine upon the reference signal of logical antenna ports #1 and logical antenna ports #2 on Physical Resource Block, is characterized in that,

The reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block, in each time-domain symbol, shine upon 3 reference signals, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 4, wherein, described 4 time-domain symbol comprise: the first time-domain symbol, the second time-domain symbol, the 3rd time-domain symbol, the 4th time-domain symbol; Or

The reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 3 time-domain symbol of described Physical Resource Block, in each time-domain symbol, shine upon 4 reference signals, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 3; Or

The reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 2 time-domain symbol of described Physical Resource Block, in each time-domain symbol, shine upon 6 reference signals, the frequency domain interval of the adjacent reference signal of shining upon in identical time-domain symbol is 2, wherein, described 2 time-domain symbol comprise: the first time-domain symbol and the 3rd time-domain symbol, or, the second time-domain symbol and the 4th time-domain symbol.

16. methods according to claim 15, it is characterized in that, the mapping time-frequency domain location overlap of the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2, and distinguish the reference signal of the above logical antenna ports #1 of same time-frequency domain position and the reference signal of described logical antenna ports #2 by the mode of code division multiplexing.

17. methods according to claim 16, is characterized in that,

In the system of regular circulation prefix, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is all mapped to described Physical Resource Block in the 4th time-domain symbol and last time-domain symbol of the first time slot of described time domain, and in the 3rd time-domain symbol and time-domain symbol second from the bottom of the second time slot, wherein, the reference signal of the 4th time-domain symbol of described the first time slot and the 3rd time-domain symbol of described the second time slot is determined by cell ID at the initial position of frequency domain, the reference signal of last time-domain symbol of described the first time slot is the initial position interval 2 at frequency domain in the reference signal of the initial position of frequency domain and the 4th time-domain symbol of described the first time slot, the reference signal of the time-domain symbol second from the bottom of described the second time slot is the initial position interval 2 at frequency domain in the reference signal of the initial position of frequency domain and the 3rd time-domain symbol of described the second time slot,

Or

In the system of extended cyclic prefix, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is all mapped to described Physical Resource Block in the time-domain symbol second from the bottom of the first time slot of described time domain, and in second time-domain symbol and time-domain symbol second from the bottom of the second time slot, wherein, the reference signal of the time-domain symbol second from the bottom of described the first time slot and the time-domain symbol second from the bottom of described the second time slot is determined by cell ID at the initial position of frequency domain, the reference signal of the second time-domain symbol of described the second time slot is the initial position interval 2 at frequency domain in the reference signal of the initial position of frequency domain and the time-domain symbol second from the bottom of described the second time slot.

18. methods according to claim 16, is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 2 time-domain symbol of described Physical Resource Block,

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is all mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot, wherein, the reference signal of last time-domain symbol of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of last time-domain symbol of described the second time slot is the initial position interval 1 at frequency domain in the reference signal of the initial position of frequency domain and last time-domain symbol of described the first time slot; Or

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is all mapped to described Physical Resource Block in the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, the reference signal of the time-domain symbol second from the bottom of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the time-domain symbol second from the bottom of described the second time slot is the initial position interval 1 at frequency domain in the reference signal of the initial position of frequency domain and the time-domain symbol second from the bottom of described the first time slot; Or

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is all mapped to described Physical Resource Block in last time-domain symbol of the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, the reference signal of last time-domain symbol of described the first time slot is determined by cell ID at the initial position of frequency domain, the reference signal of the time-domain symbol second from the bottom of described the second time slot is the initial position interval 1 at frequency domain in the reference signal of the initial position of frequency domain and last time-domain symbol of described the first time slot.

19. methods according to claim 16, is characterized in that,

In the system of regular circulation prefix, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is all mapped to described Physical Resource Block in the first time slot of described time domain and the 4th time-domain symbol of the second time slot, wherein, the reference signal of the 4th time-domain symbol of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the 4th time-domain symbol of described the second time slot is the initial position interval 1 at frequency domain in the reference signal of the initial position of frequency domain and the 4th time-domain symbol of described the first time slot; Or

In the system of regular circulation prefix, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is all mapped to described Physical Resource Block in the 4th time-domain symbol of the first time slot of described time domain and the 3rd time-domain symbol of the second time slot, wherein, the reference signal of the 4th time-domain symbol of described the first time slot is determined by cell ID at the initial position of frequency domain, the reference signal of the 3rd time-domain symbol of described the second time slot is the initial position interval 1 at frequency domain in the reference signal of the initial position of frequency domain and the 4th time-domain symbol of described the first time slot.

20. methods according to claim 15, is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block,

The reference signal of described logical antenna ports #1 is mapped in the first time-domain symbol and the 3rd time-domain symbol in 4 time-domain symbol of described Physical Resource Block, the reference signal of described logical antenna ports #2 is mapped in the second time-domain symbol and the 4th time-domain symbol in 4 time-domain symbol of described Physical Resource Block, or

The reference signal of described logical antenna ports #1 is mapped in the second time-domain symbol and the 4th time-domain symbol in 4 time-domain symbol of described Physical Resource Block, the reference signal of described logical antenna ports #2 is mapped in the first time-domain symbol and the 3rd time-domain symbol in 4 time-domain symbol of described Physical Resource Block.

21. methods according to claim 20, is characterized in that,

In the system of regular circulation prefix, the reference signal of described logical antenna ports #1 is mapped to described Physical Resource Block in the 4th time-domain symbol of the first time slot of described time domain and the 3rd time-domain symbol of the second time slot, wherein, reference signal in the 4th time-domain symbol of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal in the 3rd time-domain symbol of described the second time slot in the initial position of frequency domain and the 4th time-domain symbol of described the first time slot is at the initial position interval 2 of frequency domain;

The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in last time-domain symbol of the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, reference signal in the time-domain symbol second from the bottom of described the second time slot determined by cell ID at the initial position of frequency domain, and the reference signal in the initial position of the reference signal in last time-domain symbol of described the first time slot and the time-domain symbol second from the bottom of described the second time slot is at the initial position interval 2 of frequency domain.

22. methods according to claim 20, is characterized in that,

The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in the time-domain symbol second from the bottom of the first time slot of described time domain and the 3rd time-domain symbol of the second time slot, wherein, reference signal in the time-domain symbol second from the bottom of described the first time slot determined by cell ID at the initial position of frequency domain, and the initial position of reference signal in the 3rd time-domain symbol of described the second time slot and the reference signal in the time-domain symbol second from the bottom of described the first time slot are at the initial position interval 2 of frequency domain.

23. methods according to claim 20, is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block,

The reference signal of described logical antenna ports #1 is mapped to described Physical Resource Block in the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, and the reference signal of described logical antenna ports #1 is determined by cell ID at the initial position of frequency domain; The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot, and the reference signal of described logical antenna ports #2 is determined by cell ID at the initial position of frequency domain; Or

The reference signal of described logical antenna ports #1 is mapped to described Physical Resource Block in the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, reference signal on described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal on described the second time slot is the initial position interval 2 at frequency domain in the initial position of frequency domain and the reference signal on described the first time slot; And the reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot, wherein, reference signal on described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal on described the second time slot is the initial position interval 2 at frequency domain in the initial position of frequency domain and the reference signal on described the first time slot.

24. methods according to claim 15, is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 2 time-domain symbol of described Physical Resource Block,

In the first time-domain symbol of described Physical Resource Block time domain, the reference signal of described logical antenna ports #1 is positioned at the first frequency domain position, the 3rd frequency domain position and the 5th position of described frequency domain on frequency domain, and the reference signal of described logical antenna ports #2 is positioned at the second frequency domain position, the 4th frequency domain position and the 6th frequency domain position of described frequency domain on frequency domain; Or

The reference signal of described logical antenna ports #1 is positioned at the second frequency domain position, the 4th frequency domain position and the 6th position of described frequency domain on frequency domain, and the reference signal of described logical antenna ports #2 is positioned at the first frequency domain position, the 3rd frequency domain position and the 5th frequency domain position of described frequency domain on frequency domain;

Wherein, described the first frequency domain position, described the second frequency domain position, described the 3rd frequency domain position, described the 4th frequency domain position, described the 5th frequency domain position, described the 6th frequency domain increase successively on frequency domain.

25. methods according to claim 24, is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 2 time-domain symbol of described Physical Resource Block,

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot, wherein, the reference signal of the reference signal of logical antenna ports #1 and logical antenna ports #2 is determined by cell ID at the initial position of frequency domain; Or

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 are determined by cell ID at the initial position of frequency domain; Or

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped to described Physical Resource Block in last time-domain symbol of the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 are determined by cell ID at the initial position of frequency domain.

26. methods according to claim 24, is characterized in that,

In the system of regular circulation prefix, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and the 4th time-domain symbol of the second time slot, wherein, the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 are determined by cell ID at the initial position of frequency domain.

27. according to claim 15 to the method described in any one in 26, it is characterized in that, described the first time-domain symbol, described the second time-domain symbol, described the 3rd time-domain symbol and described the 4th time-domain symbol increase progressively successively in the time domain of described Physical Resource Block, and are OFDM symbol.

28. according to claim 15 to the method described in any one in 26, it is characterized in that, the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is for supporting the transmission of the shared bandwidth of Physical Downlink Shared Channel of double antenna port, and only in the Physical Resource Block of mapped Physical Downlink Shared Channel, transmits.

29. according to claim 15 to the method described in any one in 26, it is characterized in that, the data of transmission are shone upon the reference signal of described logical antenna ports #1 and described logical antenna ports #2 on described Physical Resource Block as required.

30. according to claim 15 to the method described in any one in 26, it is characterized in that, the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is for to be configured according to component carrier frequency the reference signal obtaining, or for to be configured according to subframe the reference signal obtaining.

The mapping method of 31. 1 kinds of customer special reference signals, for shine upon the reference signal of logical antenna ports #1 and logical antenna ports #2 on Physical Resource Block, is characterized in that,

The reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 2 time-domain symbol of described Physical Resource Block, in each time-domain symbol, shine upon 4 reference signals, the frequency domain interval of the adjacent reference signal of the mapping in identical time-domain symbol is 3, wherein, described 2 time-domain symbol comprise: the first time-domain symbol and the 3rd time-domain symbol, or, the second time-domain symbol and the 4th time-domain symbol; Or

The reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block, in each time-domain symbol, shine upon 2 reference signals, the frequency domain interval of the adjacent reference signal of the mapping in identical time-domain symbol is 6, wherein, described 4 time-domain symbol comprise: the first time-domain symbol, the second time-domain symbol, the 3rd time-domain symbol, the 4th time-domain symbol.

32. methods according to claim 31, is characterized in that, are mapped with in the time-domain symbol of identical time-domain position of reference signal and have the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 simultaneously.

33. methods according to claim 32, is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 2 time-domain symbol of described Physical Resource Block,

In being mapped with the time-domain symbol of reference signal, the reference signal of described logical antenna ports #1 in the first time-domain symbol and the 3rd time-domain symbol is positioned at the first frequency domain position and the 3rd frequency domain position on described frequency domain, and the reference signal of the described logical antenna ports #2 in described the first time-domain symbol and described the 3rd time-domain symbol is positioned at the second frequency domain position and the 4th frequency domain position on frequency domain; Or

In being mapped with the time-domain symbol of reference signal, the reference signal of described logical antenna ports #1 in described the second time-domain symbol and described the 4th time-domain symbol is positioned at described the second frequency domain position and described the 4th frequency domain position on described frequency domain, and the reference signal of the described logical antenna ports #2 in described the second time-domain symbol and described the 4th time-domain symbol is positioned at described the first frequency domain position and described the 3rd frequency domain position on frequency domain;

34. methods according to claim 32, is characterized in that,

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot, wherein, the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 are determined by cell ID at the initial position of frequency domain; Or

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 are determined by cell ID at the initial position of frequency domain.

35. methods according to claim 32, is characterized in that,

36. methods according to claim 31, is characterized in that, the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 are mapped in the time-domain symbol of different time domain position of described Physical Resource Block.

37. methods according to claim 36, is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block,

The reference signal of described logical antenna ports #1 is mapped in the first time-domain symbol and the 3rd time-domain symbol in 4 time-domain symbol of described Physical Resource Block, the reference signal of described logical antenna ports #2 is mapped in the second time-domain symbol and the 4th time-domain symbol in 4 time-domain symbol of described Physical Resource Block; Or

38. according to the method described in claim 37, it is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block,

In the system of regular circulation prefix, the reference signal of described logical antenna ports #1 is mapped to described Physical Resource Block in the 4th time-domain symbol of the first time slot of described time domain and the 3rd time-domain symbol of the second time slot, wherein, reference signal in the 4th time-domain symbol of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal in the 3rd time-domain symbol of described the second time slot in the initial position of frequency domain and the 4th time-domain symbol of described the first time slot is at the initial position interval 3 of frequency domain;

The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in last time-domain symbol of the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, reference signal in the time-domain symbol second from the bottom of described the second time slot determined by cell ID at the initial position of frequency domain, and the reference signal in the initial position of the reference signal in last time-domain symbol of described the first time slot and the time-domain symbol second from the bottom of described the second time slot is at the initial position interval 3 of frequency domain.

39. according to the method described in claim 37, it is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block,

In the system of regular circulation prefix, the reference signal of described logical antenna ports #1 is mapped to described Physical Resource Block in the first time slot of described time domain and the 4th time-domain symbol of the second time slot, wherein, reference signal in the 4th time-domain symbol of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal in the 4th time-domain symbol of described the second time slot in the initial position of frequency domain and the 4th time-domain symbol of described the first time slot is at the initial position interval 3 of frequency domain;

The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, reference signal in the time-domain symbol second from the bottom of described the second time slot determined by cell ID at the initial position of frequency domain, and the reference signal in the initial position of the reference signal in the time-domain symbol second from the bottom of described the first time slot and the time-domain symbol second from the bottom of described the second time slot is at the initial position interval 3 of frequency domain.

40. according to the method described in claim 37, it is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block,

The reference signal of described logical antenna ports #2 is mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot, wherein, reference signal in last time-domain symbol of described the second time slot determined by cell ID at the initial position of frequency domain, and the reference signal in the initial position of the reference signal in last time-domain symbol of described the first time slot and last time-domain symbol of described the second time slot is at the initial position interval 3 of frequency domain.

41. according to the method described in claim 37, it is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block,

In the system of regular circulation prefix, the reference signal of described logical antenna ports #1 is mapped to described Physical Resource Block in the first time slot of described time domain and the time-domain symbol second from the bottom of the second time slot, wherein, reference signal in the time-domain symbol second from the bottom of described the first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal in the time-domain symbol second from the bottom of described the second time slot in the initial position of frequency domain and the time-domain symbol second from the bottom of described the first time slot is at the initial position interval 3 of frequency domain;

42. methods according to claim 31, it is characterized in that, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is mapped on identical time-frequency domain symbol, and distinguishes the described logical antenna ports #1 that shines upon on same time-frequency domain position and the reference signal of described logical antenna ports #2 by code division multiplexing mode.

43. according to the method described in claim 42, it is characterized in that, in the situation that the reference signal of shining upon described logical antenna ports #1 and described logical antenna ports #2 in 4 time-domain symbol of described Physical Resource Block,

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is all mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot and time-domain symbol second from the bottom, wherein, the 4th carrier wave on the frequency domain that the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 are described Physical Resource Block at the initial position of frequency domain;

The reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is all mapped to described Physical Resource Block in the first time slot of described time domain and last time-domain symbol of the second time slot and time-domain symbol second from the bottom, wherein, the reference signal of described logical antenna ports #1 and the reference signal of described logical antenna ports #2 are determined by cell ID at the initial position of frequency domain.

44. according to the method described in any one in claim 31 to 43, it is characterized in that, described the first time-domain symbol, described the second time-domain symbol, described the 3rd time-domain symbol and described the 4th time-domain symbol increase progressively successively in the time domain of described Physical Resource Block, and are OFDM symbol.

45. according to the method described in any one in claim 31 to 43, it is characterized in that, the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is for supporting the transmission of the shared bandwidth of Physical Downlink Shared Channel of double antenna port, and only in the Physical Resource Block of mapped Physical Downlink Shared Channel, transmits.

46. according to the method described in any one in claim 31 to 43, it is characterized in that, the data of transmission are shone upon the reference signal of described logical antenna ports #1 and described logical antenna ports #2 on described Physical Resource Block as required.

47. according to the method described in any one in claim 31 to 43, it is characterized in that, the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is for to be configured according to component carrier frequency the reference signal obtaining, or for to be configured according to subframe the reference signal obtaining.