CN101483466A

CN101483466A - Mapping method for customer special reference signal

Info

Publication number: CN101483466A
Application number: CNA2009100063052A
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: 2009-07-15
Anticipated expiration: 2029-02-06
Also published as: CN101483466B

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

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

Multiple-input and multiple-output (Multiple-Input Multiple-Output, abbreviating MIMO as) 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 abbreviates B3G as) and 4G.But under the strong situation of channel relevancy, the diversity gain and the spatial multiplexing gain that are brought by multipath channel can reduce greatly, and then cause declining to a great extent of mimo system performance.

At present, propose a kind of new MIMO method for precoding at the problem that declines to a great extent of above-mentioned mimo system performance, this method is a kind of multiplex mode of MIMO efficiently.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 this method can effectively be eliminated the influence of channel relevancy, so this precoding technique can guarantee the stability of mimo system under various environment.

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

It in Long Term Evolution (Long Term Evolution the abbreviates LTE as) system essential planning of third generation affiliate tissue.As shown in Figure 1a, when the Cyclic Prefix of system adopts the regular circulation prefix, a Physical Resource Block is made of strange time slot and even time slot, and each time slot comprise 7 length on/descending symbol, at this moment, the mapping position of customer special reference signal in Physical Resource Block can be with reference to the R5 shown in Fig. 1 a.Shown in Fig. 1 b, when the Cyclic Prefix of system adopts extended cyclic prefix, a Physical Resource Block is made of strange time slot and even time slot, and each time slot comprise 6 length on/descending symbol, at this moment, 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 the LTE system, a Resource Unit (Resource Element, abbreviate RE as) be a subcarrier in the OFDM symbol, and a downlink resource piece (ResourceBlock, abbreviate RB as) constitute by continuous 12 subcarriers and continuous 7 (being 6 in the time of extended cyclic prefix) OFDM symbols, being 180kHz on frequency domain, is a general time slots length on the time domain.When resource allocation, Resource Block can be distributed as base unit.

Usually, the LTE system supports the MIMO of 4 antennas to use, also support simultaneously the wave beam forming technology of single codeword (Single Codeword) single current (Single Stream), promptly, can support Physical Shared Channel (Physical downlink sharedchannel the abbreviates PDSCH as) transmission of single antenna port.Wherein, customer special reference signal (UE-specificreference signals) is used to support the PDSCH transmission of single antenna port.

LTE-Advanced (Further Advancements for E-UTRA abbreviates LTE-A as) is the evolution version of LTE Release-8.Except satisfying or surpassing 3GPP TR25.913: all related needs of " Requirementsfor Evolved UTRA (E-UTRA) and EvolvedUTRAN (E-UTRAN) ", also to meet or exceed the demand of the senior international mobile communication (International MobileTelecommunications-Advanced abbreviates IMT-Advanced as) of ITU-R proposition.Wherein, the demand with LTE Release-8 backward compatibility is meant: 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 can to dispose (comprising the frequency spectrum configuration (for example, the continuous frequency spectrum resource of 100MHz) wideer) work down at the frequency spectrum of different sizes than LTE Release-8.Because the LTE-Advanced network needs to insert LTE user, so its operational frequency bands need cover the LTE frequency band of present employing, yet, on this frequency range, there has not been the spectral bandwidth of assignable continuous 100MHz.So the problem that LTE-Advanced need solve is exactly that several continuous component carrier frequency (frequency spectrum) (being called Component carrier) polymerizations that are distributed on the different frequency range are got up to form the operable 100MHz bandwidth of LTE-Advanced.That is to say that for the frequency spectrum after assembling, the frequency spectrum that is divided in each component carrier frequency (frequency spectrum) in n the component carrier frequency (frequency spectrum) (Component carrier) is continuous.

The clear and definite descending application that can support 8 antennas at most of LTE-Advanced among the demand research report TR36.814V0.1.1 of the LTE-Advanced that proposes in September, 2008, but, at how making the descending support dual-stream beamforming of LTE-Advanced technology, promptly, support to adopt the PDSCH transmission of double antenna port, do not propose effective solution at present as yet.

Summary of the invention

Consider the problem that can't make the descending support dual-stream beamforming of LTE-Advanced technology in the correlation technique 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, a kind of mapping method of customer special reference signal is provided, be used on Physical Resource Block, shining upon the reference signal of logical antenna ports #1 and logical antenna ports #2.

In mapping method according to customer special reference signal of the present invention, 4 reference signals of mapping on each time-domain symbol in the reference signal of mapping logical antenna ports #1 and logical antenna ports #2 on 4 time-domain symbol of Physical Resource Block, 4 time-domain symbol; Wherein, the frequency domain interval of the adjacent reference signal of shining upon on the 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, be used on Physical Resource Block, shining upon the reference signal of logical antenna ports #1 and logical antenna ports #2.

In mapping method according to customer special reference signal of the present invention, the reference signal of mapping logical antenna ports #1 and logical antenna ports #2 on 4 time-domain symbol of Physical Resource Block, 3 reference signals of mapping on each time-domain symbol, the frequency domain interval of the adjacent reference signal of shining upon on the identical time-domain symbol is 4; Perhaps the reference signal of mapping logical antenna ports #1 and logical antenna ports #2 on 3 time-domain symbol of Physical Resource Block is shone upon 4 reference signals on each time-domain symbol, and the frequency domain interval of the adjacent reference signal of shining upon on the identical time-domain symbol is 3; Perhaps the reference signal of mapping logical antenna ports #1 and logical antenna ports #2 on 2 time-domain symbol of Physical Resource Block is shone upon 6 reference signals on each time-domain symbol, and the frequency domain interval of the adjacent reference signal of shining upon on the identical time-domain symbol is 2.

In mapping method according to customer special reference signal of the present invention, the reference signal of mapping logical antenna ports #1 and logical antenna ports #2 on 2 time-domain symbol of Physical Resource Block, 4 reference signals of mapping on each time-domain symbol, the frequency domain interval of the adjacent reference signal of the mapping on the identical time-domain symbol is 3; Perhaps the reference signal of mapping logical antenna ports #1 and logical antenna ports #2 on 4 time-domain symbol of Physical Resource Block is shone upon 2 reference signals on each time-domain symbol, and the frequency domain interval of the adjacent reference signal of the mapping on the identical time-domain symbol is 6.

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

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification 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 under the situation of regular circulation prefix in the correlation technique;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 two;

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 two;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Embodiment

Functional overview

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

The various mapping modes that adopt according to reference information behind the reference signal mapping method of the present invention are described below in conjunction with instantiation.Wherein, among Fig. 2 to Figure 10 of description institute reference hereinafter, the lateral coordinates of Physical Resource Block is a time domain, increase successively from left to right, ordinate is a frequency domain, increases successively from top to bottom, and, even-numbered slots among the figure represents even time slot, and this time slot is also referred to as first time slot hereinafter; Odd-numbered slots represents strange time slot, and this time slot is also referred to as second time slot hereinafter, and the reference signal of the mapping of the R8 presentation logic antenna port #1 among the figure, the reference signal of R9 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 among the figure, and the relative position relation between the reference signal of each antenna logic port is constant; In addition, lateral coordinates shown in the figure is that time domain, ordinate are frequency domain, this time-frequency coordinate only is an example, in order to describe the time-frequency coordinate system that can adopt other form according to the anti-mode of mapping of the present invention equally, for example, can adopt lateral coordinates is that frequency domain, ordinate are the time-frequency coordinate of time domain.

Wherein, logical antenna ports #1 hereinafter and logical antenna ports #2 are used to represent two logical antenna ports of dual-stream beamforming technology, and its numbering does not have any physical significance, only are used to distinguish this two logical antenna ports.Time-domain symbol hereinafter can be the OFDM symbol, and reference signal is a customer special reference signal.And, the reference signal of logical antenna ports #1 and logical antenna ports #2 is used to support 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 handled and need be carried out according to the transmission of data, that is the reference signal of mapping logic antenna port in the Resource Block of needs transmission data.

Method embodiment 1

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

In method according to present embodiment, the reference signal of mapping logical antenna ports #1 and logical antenna ports #2 on 4 time-domain symbol of Physical Resource Block, 4 reference signals of mapping on each time-domain symbol; Wherein, the frequency domain interval of the adjacent reference signal of shining upon on the identical time-domain symbol is 3.

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

To example 7, the mode of 16 reference signals of mapping in Physical Resource Block has been described at example 1.

Example 1

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

Shown in Fig. 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 3rd symbol of the 4th symbol of first time slot of time domain and second time slot, on frequency domain, be spaced apart 3 between the adjacent reference signal, reference signal on the 4th symbol of first time slot is the section start of Resource Block at the initial position of frequency domain, and the reference signal of the reference signal on the 3rd symbol of second time slot on the 4th symbol of the initial position of frequency domain and first time slot is on frequency domain at interval 2;

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

Example 2

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

Shown in Fig. 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 3rd symbol of the 4th symbol of first time slot of time domain and second time slot, on frequency domain, be spaced apart 3 between the adjacent reference signal, reference signal on the 4th symbol of first time slot is the section start of Resource Block at the initial position of frequency domain, and the reference signal of the reference signal on the 3rd symbol of second time slot on the 4th symbol of the initial position of frequency domain and first time slot is on frequency domain at interval 2;

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

Example 3

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

Shown in Fig. 2 c, when Cyclic Prefix is the regular circulation prefix, the mapping position of reference signal in Physical Resource Block is: R8 and R9 lay respectively at time-domain position of latter two OFDM symbol of even time slot on the time domain and strange time slot, on frequency domain, be spaced apart 3 between the adjacent reference signal on the prosign, and be the section start of Resource Block at the initial position of frequency domain; Shown in Fig. 2 d, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is: R8 and R9 lay respectively at time-domain position of latter two OFDM symbol of even time slot on the time domain and strange time slot, being spaced apart 3 between the adjacent reference signal on frequency domain on the prosign, is the section start of 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 penult symbol of each time slot of time domain, on frequency domain, be spaced apart 3 between the adjacent reference signal, reference signal on first time slot is the section start of Resource Block at the initial position of frequency domain, and the reference signal on second time slot is at the initial position and the interval 2 on frequency domain of the reference signal on 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, on frequency domain, be spaced apart 3 between the adjacent reference signal, reference signal on first time slot is the section start of Resource Block at the initial position of frequency domain, reference signal on second time slot is at the initial position and the interval 2 on frequency domain of the reference signal on first time slot of frequency domain, that is to say, the difference of a mapping mode of this example and a last example is: the frequency domain original position at different time-gap R8 and R9 will change, and still the frequency domain original position of R8 and R9 still keeps identical in each time slot.

Shown in Fig. 2 e, when Cyclic Prefix is the regular circulation prefix, the mapping position of reference signal in Physical Resource Block is: R8 and R9 lay respectively at the time-domain position of latter two OFDM of even time slot on the time domain and strange time slot, and in first time slot, the initial position of the frequency domain of R8 and R9 is the section start of Resource Block, in second time slot, the frequency domain interval of the reference signal on the initial position of the frequency domain of R8 and R9 and first time slot is 2; Shown in Fig. 2 f, when Cyclic Prefix is extended cyclic prefix, the mapping position of reference signal in Physical Resource Block is: R8 and R9 lay respectively at the time-domain position of latter two OFDM of even time slot on the time domain and strange time slot, and in first time slot, the initial position of the frequency domain of R8 and R9 is the section start of Resource Block, in second time slot, the reference signal on the initial position of the frequency domain of R8 and R9 and first time slot is spaced apart 2 on frequency domain.

Example 5

Shown in Fig. 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 the 4th symbol and last symbol at first time slot of time domain, on the 3rd symbol and penult symbol of second time slot, on frequency domain, be spaced apart 3 between the adjacent reference signal, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the reference signal of first time slot is the section start of Resource Block at the initial position of frequency domain, and the reference signal of second time slot is spaced apart 2 in the reference signal of the initial position of frequency domain and 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 penult symbol of each time slot of time domain, on frequency domain, be spaced apart 3 between the adjacent reference signal, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, and the reference signal of logical antenna ports #1 and logical antenna ports #2 is the section start of Resource Block at the initial position of frequency domain;

When Cyclic Prefix is the regular circulation prefix, reference signal in the mapping position in the Physical Resource Block shown in Fig. 3 b, the mapping position of reference signal in Physical Resource Block is identical with mapping position among Fig. 2 c, and difference is R8 and R9 all staggered mapping the on frequency domain and time domain; When Cyclic Prefix is extended cyclic prefix, reference signal in the mapping position in the Physical Resource Block shown in Fig. 3 c, wherein, the mapping position of reference signal in Physical Resource Block is identical with mapping position among Fig. 2 d, and difference is R8 and R9 all staggered mapping the 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 penult symbol of each time slot of time domain, on frequency domain, be spaced apart 3 between the adjacent reference signal, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, the reference signal of first time slot is the section start of Resource Block at the initial position of frequency domain, and the reference signal of second time slot is at the reference signal interval 2 of the initial position and first time slot of frequency domain;

Particularly, when Cyclic Prefix is the regular circulation prefix, shown in Fig. 3 d, the mapping position of reference signal in Physical Resource Block is identical with mapping position among Fig. 2 e in the mapping position in the Physical Resource Block for reference signal, and difference is R8 and R9 all staggered mapping the on frequency domain and time domain; When Cyclic Prefix is extended cyclic prefix, reference signal in the mapping position in the Physical Resource Block shown in Fig. 3 e, wherein, the mapping position of reference signal in Physical Resource Block is identical with mapping position among Fig. 2 f, and difference is R8 and R9 all staggered mapping the 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, with the use of the PDSCH transmission that guarantees the double antenna port, the system in the correlation technique filled up does not support the problem of dual-stream beamforming technology, can improve the overall performance of system.

Method embodiment two

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

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

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

To example 21, the mode of 12 reference signals of mapping in Physical Resource Block has been described at example 8.

Example 8

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

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 all is present in each Resource Block on the 3rd symbol and penult symbol of the 4th symbol of first time slot of time domain and last symbol and second time slot, on frequency domain, be spaced apart 4 between the adjacent reference signal, the reference signal of the 4th symbol of first time slot and the 3rd symbol of second time slot is the section start of Resource Block at the initial position of frequency domain, the reference signal of last symbol of first time slot is 2 in the frequency domain interval of the reference signal of the 4th symbol of the initial position of frequency domain and first time slot, the reference signal of the penult symbol of second time slot is in the reference signal of the 3rd symbol of the initial position of frequency domain and second time slot at interval 2, the reference signal frequency domain of the reference signal of logical antenna ports #1 and logical antenna ports #2 is identical with time-domain position, 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.

Shown in Fig. 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 penult symbol of the penult symbol of first time slot of time domain and second time slot, on frequency domain, be spaced apart 3 between the adjacent reference signal, the reference signal of the penult symbol of first time slot and the penult symbol of second time slot is the section start of Resource Block at the initial position of frequency domain, the reference signal of second symbol of second time slot is in the reference signal of the penult symbol of the initial position of frequency domain and first time slot at interval 2, 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 the 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, on frequency domain, be spaced apart 2 between the adjacent reference signal, the reference signal of last symbol of first time slot is the section start of Resource Block at the initial position of frequency domain, the reference signal of last symbol of second time slot is in the reference signal of last symbol of the initial position of frequency domain and first time slot at interval 1, 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 the regular circulation prefix, reference signal in the mapping position in the Physical Resource Block shown in Fig. 5 a, when Cyclic Prefix is extended cyclic prefix, reference signal in the mapping position in the Physical Resource Block shown in Fig. 5 b.

Example 10

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

Example 11

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

Example 12

Show in this example the mapping position of reference signal in Physical Resource Block as Fig. 5 g.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, on frequency domain, be spaced apart 2 between the adjacent reference signal, the reference signal of the 4th symbol of first time slot is the section start of Resource Block at the initial position of frequency domain, the reference signal of the 4th symbol of second time slot is in the reference signal of the 4th symbol of the initial position of frequency domain and first time slot at interval 1, 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

Show in this example the mapping position of reference signal in Physical Resource Block as Fig. 5 h.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 3rd symbol of the 4th symbol of first time slot of time domain and second time slot, on frequency domain, be spaced apart 2 between the adjacent reference signal, the reference signal of the 4th symbol of first time slot is the section start of Resource Block at the initial position of frequency domain, the reference signal of the 3rd symbol of second time slot is in the reference signal of the 4th symbol of the initial position of frequency domain and first time slot at interval 1, 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

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

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

Example 15

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

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

Example 16

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

Particularly, when Cyclic Prefix is the regular circulation prefix, reference signal in the mapping position in the Physical Resource Block shown in Fig. 6 c, when Cyclic Prefix is extended cyclic prefix, reference signal in the mapping position in the Physical Resource Block 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 penult symbol of each time slot of time domain, on frequency domain, be spaced apart 4 between the adjacent reference signal, reference signal on first time slot is the section start of Resource Block at the initial position of frequency domain, and the reference signal on second time slot is at the initial position and the interval of the reference signal on first time slot 2 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, on frequency domain, be spaced apart 4 between the adjacent reference signal, reference signal on first time slot is the section start of Resource Block at the initial position of frequency domain, and the reference signal on second time slot is at the initial position and the interval of the reference signal on first time slot 2 of frequency domain.

Particularly, when Cyclic Prefix is the regular circulation prefix, reference signal in the mapping position in the Physical Resource Block shown in Fig. 6 e, when Cyclic Prefix is extended cyclic prefix, reference signal in the mapping position in the Physical Resource Block shown in Fig. 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, on frequency domain, be spaced apart 2 between the adjacent reference signal, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, and the reference signal of logical antenna ports #1 and logical antenna ports #2 is the section start of Resource Block at the initial position of frequency domain.

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

Example 19

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

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

Example 20

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

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

Example 21

Show in this example the mapping position of reference signal in Physical Resource Block as Fig. 7 g.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, on frequency domain, be spaced apart 2 between the adjacent reference signal, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, and the reference signal of logical antenna ports #1 and logical antenna ports #2 is the section start of Resource Block at the initial position of frequency domain.

Method embodiment three

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

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

To example 30, the mode of 8 reference signals of mapping in Physical Resource Block has been described at example 22.

Example 22

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

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

Example 23

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

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

Example 24

Show in this example the mapping position of reference signal in Physical Resource Block as Fig. 8 e.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, on frequency domain, be spaced apart 3 between the adjacent reference signal, the reference signal of logical antenna ports #1 and logical antenna ports #2 is staggeredly placed on time domain and frequency domain, and the reference signal of logical antenna ports #1 and logical antenna ports #2 is the section start of Resource Block at the initial position of frequency domain.

Example 25

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

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

Example 26

Show in this example the mapping position of reference signal in Physical Resource Block as Fig. 9 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 each time slot of time domain, on frequency domain, be spaced apart 6 between the adjacent reference signal, reference signal on the 4th symbol of first time slot is the section start of Resource Block at the initial position of frequency domain, the reference signal of the reference signal on the 4th symbol of second time slot on the 4th symbol of the initial position of frequency domain and first time slot at interval 3;

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

Example 27

Show in this example the mapping position of reference signal in Physical Resource Block as Fig. 9 c.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, on frequency domain, be spaced apart 6 between the adjacent reference signal, reference signal on the 4th symbol of first time slot is the section start of Resource Block at the initial position of frequency domain, the reference signal of the reference signal on the 4th symbol of second time slot on the 4th symbol of the initial position of frequency domain and first time slot at interval 3;

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

Example 28

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

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, on frequency domain, be spaced apart 6 between the adjacent reference signal, reference signal on last symbol of second time slot is the section start of 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 first time slot and last symbol of second time slot;

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

Example 29

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

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

Example 30

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

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

It should be noted that, at the left and right sides two parts shown in Figure 10 a to 10d is same Physical Resource Block, just for purpose 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 the reference signal of multiplexing these two ports of mode that can be by code division multiplexing, and by corresponding suitable Walsh sign indicating number respectively demodulation shine upon the signal of these two logical antenna ports.

In sum, the present invention by the definition reference signal the physical resource mapping position and shine upon, can make the reference signal of mapping support the PDSCH of double antenna port to transmit, use with the PDSCH transmission that guarantees the double antenna port, the system in the correlation technique filled up does not support 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 the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

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

Claims

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

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

Wherein, the frequency domain interval of the adjacent reference signal of shining upon on the identical time-domain symbol is 3.

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 on 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 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 second time-domain symbol and the 4th time-domain symbol in described 4 time-domain symbol; Perhaps

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

5 methods according to claim 2 is characterized in that,

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

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

8. method according to claim 1 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 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 that shines upon on first time-domain symbol and the 3rd time-domain symbol is positioned at first frequency domain position and the 3rd frequency domain position on frequency domain, the reference signal of the described logical antenna ports #2 that shines upon on described first time-domain symbol and described the 3rd time-domain symbol is positioned at second frequency domain position and the 4th frequency domain position on frequency domain; Perhaps

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

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

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

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

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 on last time-domain symbol and time-domain symbol second from the bottom of first time slot of described time domain and second time slot, wherein, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is determined by cell ID at the initial position of frequency domain; Perhaps

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 on last time-domain symbol and time-domain symbol second from the bottom of first time slot of described time domain and second time slot, wherein, the reference signal of described first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of described second time slot is at the reference signal of the initial position of frequency domain and first time slot initial position interval 2 at frequency domain.

11. according to each described method in the 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 the reference signal that obtains according to component carrier frequency, perhaps for to be configured the reference signal that obtains according to subframe.

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

13. according to each described method in the 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 used to support the transmission of the shared bandwidth of Physical Downlink Shared Channel of double antenna port, and only transmits in the Physical Resource Block of mapped Physical Downlink Shared Channel.

14., it is characterized in that Chuan Shu data 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 according to each described method in the claim 1 to 10.

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

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

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

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

16. method 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. method according to claim 16 is characterized in that,

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

Perhaps

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

18. method according to claim 16 is characterized in that, under the situation of the reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 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 all is mapped to described Physical Resource Block on last time-domain symbol of first time slot of described time domain and second time slot, wherein, the reference signal of last time-domain symbol of described 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 second time slot is at the reference signal of the initial position of frequency domain and last time-domain symbol of described first time slot initial position interval 1 at frequency domain; Perhaps

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

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

19. method 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 all is mapped to described Physical Resource Block on the 4th time-domain symbol of first time slot of described time domain and second time slot, wherein, the reference signal of the 4th time-domain symbol of described 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 second time slot is at the reference signal of the initial position of frequency domain and the 4th time-domain symbol of described first time slot initial position interval 1 at frequency domain;

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 all is mapped to described Physical Resource Block on the 3rd time-domain symbol of the 4th time-domain symbol of first time slot of described time domain and second time slot, wherein, the reference signal of the 4th time-domain symbol of described first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the 3rd time-domain symbol of described second time slot is at the reference signal of the initial position of frequency domain and the 4th time-domain symbol of described first time slot initial position interval 1 at frequency domain.

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

The reference signal of described logical antenna ports #1 is mapped on 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 on second time-domain symbol and the 4th time-domain symbol in 4 time-domain symbol of described Physical Resource Block, perhaps

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

21. method 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 on the 3rd time-domain symbol of the 4th time-domain symbol of first time slot of described time domain and second time slot, wherein, reference signal on the 4th time-domain symbol of described first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal on the 3rd time-domain symbol of described second time slot on the 4th time-domain symbol of the initial position of frequency domain and described 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 on the time-domain symbol second from the bottom of last time-domain symbol of first time slot of described time domain and second time slot, wherein, reference signal on the time-domain symbol second from the bottom of described second time slot is determined by cell ID that at the initial position of frequency domain the reference signal on the initial position of the reference signal on last time-domain symbol of described first time slot and the time-domain symbol second from the bottom of described second time slot is at the initial position interval 2 of frequency domain.

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

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

23. method according to claim 20 is characterized in that, under the situation of the reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 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 on the time-domain symbol second from the bottom of first time slot of described time domain and 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 on last time-domain symbol of first time slot of described time domain and 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; Perhaps

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

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

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

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

Wherein, described first frequency domain position, described 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 on frequency domain successively.

25. method according to claim 24 is characterized in that, under the situation of the reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 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 on last time-domain symbol of first time slot of described time domain and 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; Perhaps

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 on the time-domain symbol second from the bottom of first time slot of described time domain and second time slot, wherein, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is determined by cell ID at the initial position of frequency domain; Perhaps

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 on the time-domain symbol second from the bottom of last time-domain symbol of first time slot of described time domain and second time slot, wherein, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is determined by cell ID at the initial position of frequency domain.

26. method 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 on the 4th time-domain symbol of first time slot of described time domain and second time slot, wherein, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is determined by cell ID at the initial position of frequency domain.

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

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

29., it is characterized in that Chuan Shu data 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 according to each described method in the claim 15 to 26.

30. according to each described method in the claim 15 to 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 the reference signal that obtains according to component carrier frequency, perhaps for to be configured the reference signal that obtains according to subframe.

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

The reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 2 time-domain symbol of described Physical Resource Block, 4 reference signals of mapping on each time-domain symbol, the frequency domain interval of the adjacent reference signal of the mapping on the identical time-domain symbol is 3; Perhaps

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

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

33. method according to claim 32 is characterized in that, under the situation of the reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 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 on first time-domain symbol and the 3rd time-domain symbol is positioned at first frequency domain position and the 3rd frequency domain position on described frequency domain, the reference signal of the described logical antenna ports #2 on described first time-domain symbol and described the 3rd time-domain symbol is positioned at second frequency domain position and the 4th frequency domain position on frequency domain; Perhaps

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

34. method 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 on last time-domain symbol of first time slot of described time domain and second time slot, wherein, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is determined by cell ID at the initial position of frequency domain; Perhaps

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 on the time-domain symbol second from the bottom of first time slot of described time domain and second time slot, wherein, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is determined by cell ID at the initial position of frequency domain.

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

36. method 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 on the time-domain symbol of different time domain position of described Physical Resource Block.

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

The reference signal of described logical antenna ports #1 is mapped on 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 on second time-domain symbol and the 4th time-domain symbol in 4 time-domain symbol of described Physical Resource Block; Perhaps

38. according to the described method of claim 37, it is characterized in that, under the situation of the reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 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 on the 3rd time-domain symbol of the 4th time-domain symbol of first time slot of described time domain and second time slot, wherein, reference signal on the 4th time-domain symbol of described first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal on the 3rd time-domain symbol of described second time slot on the 4th time-domain symbol of the initial position of frequency domain and described 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 on the time-domain symbol second from the bottom of last time-domain symbol of first time slot of described time domain and second time slot, wherein, reference signal on the time-domain symbol second from the bottom of described second time slot is determined by cell ID that at the initial position of frequency domain the reference signal on the initial position of the reference signal on last time-domain symbol of described first time slot and the time-domain symbol second from the bottom of described second time slot is at the initial position interval 3 of frequency domain.

39. according to the described method of claim 37, it is characterized in that, under the situation of the reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 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 on the 4th time-domain symbol of first time slot of described time domain and second time slot, wherein, reference signal on the 4th time-domain symbol of described first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal on the 4th time-domain symbol of described second time slot on the 4th time-domain symbol of the initial position of frequency domain and described 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 on the time-domain symbol second from the bottom of first time slot of described time domain and second time slot, wherein, reference signal on the time-domain symbol second from the bottom of described second time slot is determined by cell ID that at the initial position of frequency domain the reference signal on the initial position of the reference signal on the time-domain symbol second from the bottom of described first time slot and the time-domain symbol second from the bottom of described second time slot is at the initial position interval 3 of frequency domain.

40. according to the described method of claim 37, it is characterized in that, under the situation of the reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 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 on last time-domain symbol of first time slot of described time domain and second time slot, wherein, reference signal on last time-domain symbol of described second time slot is determined by cell ID that at the initial position of frequency domain the reference signal on the initial position of the reference signal on last time-domain symbol of described first time slot and last time-domain symbol of described second time slot is at the initial position interval 3 of frequency domain.

41. according to the described method of claim 37, it is characterized in that, under the situation of the reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 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 on the time-domain symbol second from the bottom of first time slot of described time domain and second time slot, wherein, reference signal on the time-domain symbol second from the bottom of described first time slot determined by cell ID at the initial position of frequency domain, and the reference signal of the reference signal on the time-domain symbol second from the bottom of described second time slot on the time-domain symbol second from the bottom of the initial position of frequency domain and described first time slot is at the initial position interval 3 of frequency domain;

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

43. according to the described method of claim 42, it is characterized in that, under the situation of the reference signal of described logical antenna ports #1 of mapping and described logical antenna ports #2 on 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 all is mapped to described Physical Resource Block on last time-domain symbol and time-domain symbol second from the bottom of first time slot of described time domain and second time slot, wherein, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is the 4th carrier wave on the frequency domain of 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 all is mapped to described Physical Resource Block on last time-domain symbol and time-domain symbol second from the bottom of first time slot of described time domain and second time slot, wherein, the reference signal of the reference signal of described logical antenna ports #1 and described logical antenna ports #2 is determined by cell ID at the initial position of frequency domain.

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

45. according to each described method in the 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 used to support the transmission of the shared bandwidth of Physical Downlink Shared Channel of double antenna port, and only transmits in the Physical Resource Block of mapped Physical Downlink Shared Channel.

46., it is characterized in that Chuan Shu data 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 according to each described method in the claim 31 to 43.

47. according to each described method in the 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 the reference signal that obtains according to component carrier frequency, perhaps for to be configured the reference signal that obtains according to subframe.