CN102055707B - Mapping method and device of channel state information-reference signal (CSI-RS) - Google Patents
Mapping method and device of channel state information-reference signal (CSI-RS) Download PDFInfo
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- CN102055707B CN102055707B CN200910221174.XA CN200910221174A CN102055707B CN 102055707 B CN102055707 B CN 102055707B CN 200910221174 A CN200910221174 A CN 200910221174A CN 102055707 B CN102055707 B CN 102055707B
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- H04W72/04—Wireless resource allocation
Abstract
The invention discloses a mapping method and device of a channel state information-reference signal (CSI-RS). The method comprises the following steps: configuring the mapping position of a subcarrier of the CSI-RS on the first sub physical resource block of a physical resource block, wherein the physical resource block is composed of the first sub physical resource block and a second sub physical resource block; and the second sub physical resource block comprises a demodulation reference signal (DMRS) and a physical broadcast channel (PBCH), a dedicated physical control channel (DPCCH) for previous two symbols, a synchronizing signal and the mapping position of a paging channel. The method is used to solve the problem that a mapping rule of the CSI-RS for a long-term evolution advance (LTE-A) is not defined in details, thus reducing performance degradation for an LTE user, lowering design expenditure, ensuring the performance of the CSI-RS, and improving the throughput of the LTE-A system.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of channel measurement pilot frequency mapping method and device.
Background technology
In order to improve the throughput of community, carry out the interference coordination of minizone, new generation of wireless communication system, as advanced long-term evolution system (Long-Term Evolution Advance, referred to as LTE-Advance), senior international wireless communication system (International MobileTelecommunication Advance is referred to as IMT-Advance) etc. all introduces the cooperation transmission technology (Coordinate Multipoint Transmission andReception is hereinafter referred to as COMP) between network level.
LTE/LTE-A system is with based on OFDM (Orthogonal FrequencyDivision Multiplexing, referred to as OFDM) technology.In an ofdm system, when the communication resource is-form of frequently bidimensional.Such as, in LTE system, the communication resource is all that each radio frames (radioframe) length is 10ms with frame (frame) for unit divides on time orientation, comprise the subframe (sub-frame) that 10 length are 1ms, as shown in Figure 1.According to the difference of Cyclic Prefix (Cyclic Prefix, referred to as CP) length, each subframe can comprise 12 or 14 OFDM symbol.In frequency direction, resource with subcarrier (sub-carrier) for unit divide, specifically in the communications, the least unit of Resourse Distribute is Resource Block (Resource Block, referred to as RB), a Physical Resource Block (Physical RB, referred to as PRB) of corresponding physical resource.A PRB comprises 12 subcarriers at frequency domain.
At third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) define two kinds of pilot tones of LTE-Advanced in LTE 56 meetings: channel measurement pilot frequency (hereinafter referred to as CSI-RS) and demodulation pilot frequency (DemodulationReference Signal, referred to as DMRS), wherein clear and definite channel measurement pilot frequency is cell-specific (cell-specific), distributes more sparse relative to demodulation pilot frequency on running time-frequency resource.
There is no the problem of specific definition for the mapping ruler of lte-a system channel measurement pilot frequency in correlation technique, not yet propose effective solution at present.
Summary of the invention
Mapping ruler for lte-a system channel measurement pilot frequency does not have the problem of specific definition and proposes the present invention, and for this reason, main purpose of the present invention is to provide a kind of channel measurement pilot frequency mapping method and device, to solve the problem one of at least.
To achieve these goals, according to an aspect of the present invention, a kind of channel measurement pilot frequency mapping method is provided.
Channel measurement pilot frequency mapping method according to the present invention comprises: arrange channel measurement pilot frequency subcarrier mapping position on the first muon physics Resource Block of Physical Resource Block, wherein, Physical Resource Block is made up of the first muon physics Resource Block and the second muon physics Resource Block, and the second muon physics Resource Block comprises: the mapping position of the physical control channel PDCCH of demodulation pilot frequency DMRS and Physical Broadcast Channel PBCH, the first two symbol, synchronizing signal and paging channel.
Preferably, channel measurement pilot frequency comprises: { 1,2,4,8} path channels measurement pilot frequency, wherein the pattern of 1 path channels measurement pilot frequency is identical with the pattern of the previous port of 2 path channels measurement pilot frequency, the pattern of 2 path channels measurement pilot frequency is identical with the pattern of front 2 ports of 4 path channels measurement pilot frequency, and the frequency domain interval of channel measurement pilot frequency component units is { 6,8,12,16,24,30,36,42,48} subcarrier.
Preferably, channel measurement pilot frequency comprises: { 4,8} path channels measurement pilot frequency, wherein, the pattern of 4 path channels measurement pilot frequency is identical with the pattern of front 4 ports of 8 path channels measurement pilot frequency, and the frequency domain interval of channel measurement pilot frequency component units is { 6,8,12,24} subcarrier.
Preferably, frequency domain mapping position carries out translation with Cell Identity CI delivery three or mould six, and the subcarrier spacing of channel measurement pilot frequency is constant, and the symbol that channel measurement pilot frequency sends is also constant.
To achieve these goals, according to a further aspect in the invention, a kind of channel measurement pilot frequency mapping device is provided.
Channel measurement pilot frequency mapping device according to the present invention comprises: arrange module, for arranging the first muon physics Resource Block of channel measurement pilot frequency subcarrier mapping position at Physical Resource Block, wherein, Physical Resource Block is made up of the first muon physics Resource Block and the second muon physics Resource Block, and the second muon physics Resource Block comprises: the mapping position of the physical control channel PDCCH of demodulation pilot frequency DMRS and Physical Broadcast Channel PBCH, the first two symbol, synchronizing signal and paging channel.
Preferably, channel measurement pilot frequency comprises: { 1,2,4,8} path channels measurement pilot frequency, wherein the pattern of 1 path channels measurement pilot frequency is identical with the pattern of the previous port of 2 path channels measurement pilot frequency, the pattern of 2 path channels measurement pilot frequency is identical with the pattern of front 2 ports of 4 path channels measurement pilot frequency, and the frequency domain interval of channel measurement pilot frequency component units is { 6,8,12,16,24,30,36,42,48} subcarrier.
Preferably, channel measurement pilot frequency comprises: { 4,8} path channels measurement pilot frequency, wherein, the pattern of 4 path channels measurement pilot frequency is identical with the pattern of front 4 ports of 8 path channels measurement pilot frequency, and the frequency domain interval of channel measurement pilot frequency component units is { 6,8,12,24} subcarrier.
Preferably, said apparatus also comprises: translation module, and for frequency domain mapping position is carried out translation with Cell Identity CI delivery three or mould six, the subcarrier spacing of channel measurement pilot frequency is constant, and the symbol that channel measurement pilot frequency sends is also constant.
Pass through the present invention, adopt and channel measurement pilot frequency subcarrier mapping position is set on the first muon physics Resource Block of Physical Resource Block, wherein, Physical Resource Block is made up of the first muon physics Resource Block and the second muon physics Resource Block, second muon physics Resource Block comprises: demodulation pilot frequency DMRS and Physical Broadcast Channel PBCH, the physical control channel PDCCH of the first two symbol, the mapping position of synchronizing signal and paging channel, the mapping ruler solving lte-a system channel measurement pilot frequency does not have the problem of specific definition, and then reach the performance degradation reduced LTE user, and design overhead is low, the performance of channel measurement can be ensured, the effect of lte-a system throughput can be improved.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the optimization of channel measurement pilot frequency mapping method according to the embodiment of the present invention;
Fig. 2 is public guide frequency according to the normal cyclic prefix frame structure in the LTE standard of correlation technique and descending special pilot frequency pattern;
Fig. 3 is the channel measurement pilot frequency pattern of the first embodiment according to the embodiment of the present invention;
Fig. 4 is the channel measurement pilot frequency pattern of the second embodiment according to the embodiment of the present invention;
Fig. 5 is the channel measurement pilot frequency pattern of the 3rd embodiment according to the embodiment of the present invention;
Fig. 6 is the structured flowchart of the channel measurement pilot frequency mapping device according to the embodiment of the present invention;
Fig. 7 is the preferred structured flowchart of the channel measurement pilot frequency mapping device according to the embodiment of the present invention.
Embodiment
Functional overview
Consider that the mapping ruler of lte-a system channel measurement pilot frequency does not have the problem of specific definition, according to embodiments providing a kind of channel measurement pilot frequency mapping scheme, maintain LTE system CRS by the present invention to send, very little to LTE customer impact, and the pilot frequency information provided needed for high-order mimo and COMP, be conducive to LTE-Advanced user and improve single-link quality, owing to have employed more sparse design, reduce the performance degradation to LTE user, and design overhead is low, the performance of channel measurement can be ensured, lte-a system throughput can be improved, fix relative to CSI-RS frequency domain position, this invention can support more community CoMP participating, improve systematic function.
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiment of the method
According to embodiments of the invention, provide a kind of channel measurement pilot frequency mapping method.
Channel measurement pilot frequency mapping method comprises following step: arrange channel measurement pilot frequency CSI-RS subcarrier mapping position on the first muon physics Resource Block, wherein, Physical Resource Block is made up of the first muon physics Resource Block and the second muon physics Resource Block, second muon physics Resource Block comprises: demodulation pilot frequency DMRS and Physical Broadcast Channel PBCH, the physical control channel PDCCH of the first two symbol, the mapping position of synchronizing signal and paging channel, Fig. 2 is public guide frequency according to the normal cyclic prefix frame structure in the LTE standard of correlation technique and descending special pilot frequency pattern, specifically as shown in Figure 2.
Particularly, CSI-RS time domain is with N number of subframe for the cycle, and { 0,2,5,10,20} sends at equal intervals according to this cycle N ∈ within a period of time.The CSI-RS of different districts sends the cycle can be different.As N=0, each subframe of CSI-RS sends.
Wherein, each user receives the CSI-RS of this community, and in order to support the channel measurement required for COMP, COMP user also can receive the CSI-RS of other communities.
Wherein, new design { 1,2,4,8} path channels measurement pilot frequency, the pattern of 1 path channels measurement pilot frequency is identical with the pattern of the previous port of 2 path channels measurement pilot frequency, the pattern of 2 path channels measurement pilot frequency is identical with the pattern of front 2 ports of 4 path channels measurement pilot frequency, and the pattern of 4 path channels measurement pilot frequency is identical with the pattern of front 4 ports of 8 path channels measurement pilot frequency, and the frequency domain interval of each component units of channel measurement pilot frequency is { 6,8,12,16,24,30,36,42,48}.
Wherein, { 4,8} path channels measurement pilot frequency, the pattern of 4 path channels measurement pilot frequency is identical with the pattern of front 4 ports of 8 path channels measurement pilot frequency, and the frequency domain interval of each component units of channel measurement pilot frequency is { 6,8,12,16,24,30,36,42,48} in new design.
Particularly, newly-designed channel measurement pilot frequency with a RB for predetermined composition unit full bandwidth repeat at equal intervals send, 8 tunnels are positioned at and send the 4th of subframe, 5, 11, in 12 OFDM symbol, wherein, 0 path channels measurement pilot frequency is mapped on the 2nd and the 8th subcarrier of the 4th symbol, 1 path channels measurement pilot frequency is mapped on the 5th and the 11st subcarrier of the 4th symbol, 2 path channels measurement pilot frequency are mapped on the 2nd and the 8th subcarrier of the 5th symbol, 3 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 5th symbol, 4 path channels measurement pilot frequency are mapped on the 2nd and the 8th subcarrier of the 11st symbol, 5 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 11st symbol, 6 path channels measurement pilot frequency are mapped on the 2nd and the 8th subcarrier of the 12nd symbol, 7 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 12nd symbol, as shown in Figure 2.Running time-frequency resource position shared by the CSI-RS of each road can be exchanged mutually, but ensures that subcarrier spacing is 6.
Particularly, newly-designed channel measurement pilot frequency with a RB for predetermined composition unit full bandwidth repeat at equal intervals send, 8 tunnels are positioned at and send the 4th of subframe, 5, 11, in 12 OFDM symbol, wherein, 0 path channels measurement pilot frequency is mapped on the 2nd subcarrier of the 4th symbol, 1 path channels measurement pilot frequency is mapped on the 8th subcarrier of the 4th symbol, 2 path channels measurement pilot frequency are mapped on the 2nd subcarrier of the 5th symbol, 3 path channels measurement pilot frequency are mapped on the 8th subcarrier of the 5th symbol, 4 path channels measurement pilot frequency are mapped on the 2nd subcarrier of the 11st symbol, 5 path channels measurement pilot frequency are mapped on the 8th subcarrier of the 11st symbol, 6 path channels measurement pilot frequency are mapped on the 2nd subcarrier of the 12nd symbol, 7 path channels measurement pilot frequency are mapped on the 8th subcarrier of the 12nd symbol, as shown in Figure 3.Running time-frequency resource position shared by the CSI-RS of each road can be exchanged mutually, but ensures that subcarrier spacing is 6.
Newly-designed channel measurement pilot frequency with a RB for predetermined composition unit full bandwidth repeat at equal intervals send, 8 tunnels are positioned at and send the 4th of subframe, 5, 8, in 9 OFDM symbol, wherein, 0 path channels measurement pilot frequency is mapped on the 2nd and the 8th subcarrier of the 4th symbol, 1 path channels measurement pilot frequency is mapped on the 5th and the 11st subcarrier of the 4th symbol, 2 path channels measurement pilot frequency are mapped on the 2nd and the 8th subcarrier of the 5th symbol, 3 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 5th symbol, 4 path channels measurement pilot frequency are mapped on the 2nd and the 8th subcarrier of the 8th symbol, 5 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 8th symbol, 6 path channels measurement pilot frequency are mapped on the 2nd and the 8th subcarrier of the 9th symbol, 7 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 9th symbol, as shown in Figure 2.Running time-frequency resource position shared by the CSI-RS of each road can be exchanged mutually, but ensures that subcarrier spacing is 6.
Fig. 1 is the flow chart of the optimization of channel measurement pilot frequency mapping method according to the embodiment of the present invention, and as shown in Figure 1, the method comprises following step S102 and step S104:
Step S102, arranges channel measurement pilot frequency subcarrier mapping position on the first muon physics Resource Block.
Step S104, carries out translation by frequency domain mapping position with Cell Identity CI delivery three or mould six.
Be described in detail below in conjunction with the implementation procedure of example to the embodiment of the present invention.
Embodiment one
When actual antennas port number equals 4, the down channel that 8 stylish design 4 roads or 8 path channels measurement pilot frequency realize lte-a system is measured, and 4 road CSI-RS patterns are identical with the pattern of front 4 ports of 8 road CSI-RS pattern.
Newly-designed CSI-RS repeated to send the pattern shown in Fig. 3 with certain cycle, and in each cycle, newly-designed CSI-RS takies a subframe transmission.
The pilot tone frequency domain of each road antenna port of newly-designed CSI-RS is spaced apart 6 subcarriers, and each RB sending subframe full bandwidth at CSI-RS repeats the pattern shown in Fig. 3.
Newly-designed channel measurement pilot frequency with a RB for predetermined composition unit full bandwidth repeat at equal intervals send, 8 tunnels are positioned at and send the 4th of subframe, in 11 OFDM symbol, wherein, 0 path channels measurement pilot frequency is mapped on the 1st and the 7th subcarrier of the 4th symbol, 1 path channels measurement pilot frequency is mapped on the 4th and the 10th subcarrier of the 4th symbol, 2 path channels measurement pilot frequency are mapped on the 1st and the 7th subcarrier of the 11st symbol, 3 path channels measurement pilot frequency are mapped on the 4th and the 10th subcarrier of the 11st symbol, 4 path channels measurement pilot frequency are mapped on the 2nd and the 8th subcarrier of the 4th symbol, 5 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 4th symbol, 6 path channels measurement pilot frequency are mapped on the 2nd and the 8th subcarrier of the 11st symbol, 7 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 11st symbol, as shown in Figure 2.Running time-frequency resource position shared by the CSI-RS of each road can be exchanged mutually, but ensures that subcarrier spacing is 6.
Embodiment two
When actual antennas port number equals 4, the down channel that 8 stylish design 4 roads or 8 path channels measurement pilot frequency realize lte-a system is measured, and 4 road CSI-RS patterns are identical with the pattern of front 4 ports of 8 road CSI-RS pattern.
Newly-designed 4 roads or 8 road CSI-RS repeated to send the pattern shown in Fig. 4 with certain cycle, and in each cycle, newly-designed CSI-RS takies a subframe transmission.
The pilot tone frequency domain of each road antenna port of newly-designed CSI-RS is spaced apart 6 subcarriers, and each RB sending subframe full bandwidth at CSI-RS repeats the pattern shown in Fig. 4.
Newly-designed channel measurement pilot frequency with a RB for predetermined composition unit full bandwidth repeat at equal intervals send, 8 tunnels are positioned at and send the 4th of subframe, 5, 11, in 12 OFDM symbol, wherein, on the 2nd subcarrier that 0 path channels measurement pilot frequency is mapped in the 3rd symbol and the 8th subcarrier, on the 4th subcarrier that 1 path channels measurement pilot frequency is mapped in the 3rd symbol and the 11st subcarrier, on the 2nd subcarrier that 2 path channels measurement pilot frequency are mapped in the 4th symbol and the 8th subcarrier, on the 5th subcarrier that 3 path channels measurement pilot frequency are mapped in the 4th symbol and the 11st subcarrier, on the 2nd subcarrier that 4 path channels measurement pilot frequency are mapped in the 10th symbol and the 8th subcarrier, on the 5th subcarrier that 5 path channels measurement pilot frequency are mapped in the 10th symbol and the 11st subcarrier, on the 2nd subcarrier that 6 path channels measurement pilot frequency are mapped in the 11st symbol and the 8th subcarrier, on the 5th subcarrier that 7 path channels measurement pilot frequency are mapped in the 11st symbol and the 11st subcarrier, as shown in Figure 4.Running time-frequency resource position shared by the CSI-RS of each road can be exchanged mutually, but ensures that subcarrier spacing is 6.
Embodiment three
When actual antennas port number equals 4, the down channel that 8 stylish design 4 roads or 8 path channels measurement pilot frequency realize lte-a system is measured, when actual antennas port number equals 1, the down channel that the public guide frequency that when 2, channel measurement pilot frequency reuses LTE system realizes lte-a system as channel measurement pilot frequency is measured.4 road CSI-RS patterns are identical with the pattern of front 4 ports of 8 road CSI-RS pattern.
Newly-designed 4 roads or 8 road CSI-RS repeated to send the pattern shown in Fig. 5 with certain cycle, and in each cycle, newly-designed CSI-RS takies a subframe transmission.
The pilot tone frequency domain of each road antenna port of newly-designed CSI-RS is spaced apart 6 subcarriers, and each RB sending subframe full bandwidth at CSI-RS repeats the pattern shown in Fig. 5.
Newly-designed channel measurement pilot frequency with a RB for predetermined composition unit full bandwidth repeat at equal intervals send, 8 tunnels are positioned at and send the 4th of subframe, 5, 8, in 9 OFDM symbol, wherein, 0 path channels measurement pilot frequency is mapped on the 1st and the 7th subcarrier of the 4th symbol, 1 path channels measurement pilot frequency is mapped on the 4th and the 10th subcarrier of the 4th symbol, 2 path channels measurement pilot frequency are mapped on the 1st and the 7th subcarrier of the 11st symbol, 3 path channels measurement pilot frequency are mapped on the 4th and the 10th subcarrier of the 11st symbol, 4 path channels measurement pilot frequency are mapped on the 2nd and the 8th subcarrier of the 4th symbol, 5 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 4th symbol, 6 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 11st symbol, 7 path channels measurement pilot frequency are mapped on the 5th and the 11st subcarrier of the 11st symbol, as shown in Figure 5.Running time-frequency resource position shared by the CSI-RS of each road can be exchanged mutually, but ensures that subcarrier spacing is 6.
The program is sent each for predetermined composition unit RB, also can by predetermined composition unit interval 2 RB, or 1.5, interval RB, or 2.5, interval RB, or 3, interval RB full bandwidth sends at equal intervals.
Device embodiment
According to embodiments of the invention, provide a kind of channel measurement pilot frequency mapping device.
Fig. 6 is the structured flowchart of the channel measurement pilot frequency mapping device according to the embodiment of the present invention, and as shown in Figure 6, this device comprises: arrange module 62, be described in detail below to said structure:
Module 62 is set, for arranging channel measurement pilot frequency subcarrier mapping position at the first muon physics Resource Block, wherein, Physical Resource Block is made up of the first muon physics Resource Block and the second muon physics Resource Block, and the second muon physics Resource Block comprises: the mapping position of the physical control channel PDCCH of demodulation pilot frequency DMRS and Physical Broadcast Channel PBCH, the first two symbol, synchronizing signal and paging channel.
Fig. 7 is the preferred structured flowchart of the channel measurement pilot frequency mapping device according to the embodiment of the present invention, and as shown in Figure 7, this device comprises: translation module 72, is described in detail said structure below:
Translation module 72, is connected to and arranges module 62, and for carrying out translation by arranging the frequency domain mapping position that module 62 arranges with Cell Identity CI delivery three or mould six, the subcarrier spacing of channel measurement pilot frequency is constant, and the symbol that channel measurement pilot frequency sends is also constant.
It should be noted that, translation module is selected module, maps the mapping position can avoiding demodulation pilot frequency DMRS and Physical Broadcast Channel PBCH, the physical control channel PDCCH of the first two symbol, synchronizing signal and paging channel in frequency domain resource.
It should be noted that, the channel measurement pilot frequency mapping device described in device embodiment corresponds to above-mentioned embodiment of the method, and its concrete implementation procedure carried out detailed description in embodiment of the method, did not repeat them here.
In sum, by the present invention, maintain LTE system CRS and send, very little to LTE customer impact, and provide the pilot frequency information needed for high-order mimo and COMP, be conducive to LTE-Advanced user and improve single-link quality.In addition, owing to have employed more sparse design, reduce the performance degradation to LTE user, and design overhead is low, the performance of channel measurement can be ensured, lte-a system throughput can be improved.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a channel measurement pilot frequency mapping method, is characterized in that, comprising:
Channel measurement pilot frequency subcarrier mapping position is set on the first muon physics Resource Block of Physical Resource Block, wherein, described Physical Resource Block is made up of the first muon physics Resource Block and the second muon physics Resource Block, and described second muon physics Resource Block comprises: the mapping position of the physical control channel PDCCH of demodulation pilot frequency DMRS and Physical Broadcast Channel PBCH, the first two symbol, synchronizing signal and paging channel;
Wherein, frequency domain mapping position carries out translation with Cell Identity CI delivery three or mould six, and the subcarrier spacing of described channel measurement pilot frequency is constant, and the symbol that described channel measurement pilot frequency sends is also constant.
2. method according to claim 1, is characterized in that,
Described channel measurement pilot frequency comprises: { 1,2,4,8} path channels measurement pilot frequency, wherein the pattern of 1 path channels measurement pilot frequency is identical with the pattern of the previous port of 2 path channels measurement pilot frequency, the pattern of 2 path channels measurement pilot frequency is identical with the pattern of front 2 ports of 4 path channels measurement pilot frequency, and the pattern of 4 path channels measurement pilot frequency is identical with the pattern of front 4 ports of 8 path channels measurement pilot frequency, and the frequency domain interval of described channel measurement pilot frequency component units is { 6,8,12,16,24,30,36,42,48} subcarrier.
3. method according to claim 1, is characterized in that,
Described channel measurement pilot frequency comprises: 4,8} path channels measurement pilot frequency, and wherein, the pattern of 4 path channels measurement pilot frequency is identical with the pattern of front 4 ports of 8 path channels measurement pilot frequency, and the frequency domain interval of described channel measurement pilot frequency component units is { 6,8,12,16,24,30,36,42,48} subcarrier.
4. a channel measurement pilot frequency mapping device, is characterized in that, comprising:
Module is set, for arranging the first muon physics Resource Block of channel measurement pilot frequency subcarrier mapping position at Physical Resource Block, wherein, described Physical Resource Block is made up of the first muon physics Resource Block and the second muon physics Resource Block, and described second muon physics Resource Block comprises: the mapping position of the physical control channel PDCCH of demodulation pilot frequency DMRS and Physical Broadcast Channel PBCH, the first two symbol, synchronizing signal and paging channel;
Translation module, for frequency domain mapping position is carried out translation with Cell Identity CI delivery three or mould six, the subcarrier spacing of described channel measurement pilot frequency is constant, and the symbol that described channel measurement pilot frequency sends is also constant.
5. device according to claim 4, is characterized in that,
Described channel measurement pilot frequency comprises: { 1,2,4,8} path channels measurement pilot frequency, wherein the pattern of 1 path channels measurement pilot frequency is identical with the pattern of the previous port of 2 path channels measurement pilot frequency, the pattern of 2 path channels measurement pilot frequency is identical with the pattern of front 2 ports of 4 path channels measurement pilot frequency, and the pattern of 4 path channels measurement pilot frequency is identical with the pattern of front 4 ports of 8 path channels measurement pilot frequency, and the frequency domain interval of described channel measurement pilot frequency component units is { 6,8,12,16,24,30,36,42,48} subcarrier.
6. device according to claim 4, is characterized in that,
Described channel measurement pilot frequency comprises: 4,8} path channels measurement pilot frequency, and wherein, the pattern of 4 path channels measurement pilot frequency is identical with the pattern of front 4 ports of 8 path channels measurement pilot frequency, and the frequency domain interval of described channel measurement pilot frequency component units is { 6,8,12,16,24,30,36,42,48} subcarrier.
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| CN200910221174.XA CN102055707B (en) | 2009-11-02 | 2009-11-02 | Mapping method and device of channel state information-reference signal (CSI-RS) |
| PCT/CN2010/073000 WO2010145398A1 (en) | 2009-11-02 | 2010-05-20 | Method and apparatus for mapping channel state information reference signal |
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| WO2010145398A1 (en) | 2010-12-23 |
| CN102055707A (en) | 2011-05-11 |
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