CN101997810B

CN101997810B - Transmission method and device of downlink data of advanced long term evolution system

Info

Publication number: CN101997810B
Application number: CN 200910171403
Authority: CN
Inventors: 徐婧; 沈祖康; 陆松鹤
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2009-08-17
Filing date: 2009-08-28
Publication date: 2013-03-20
Anticipated expiration: 2029-08-28
Also published as: CN101997810A

Abstract

The invention discloses a transmission method and device of the downlink data of an advanced long term evolution system, solving the problem of special pilot sending of one-stream or multi-stream transmission and ensuring the transmission performance of particular time slots as far as possible. The transmission method comprises the following steps of: determining a special pilot structure which corresponds to the number of downlink transmission steams needing to be currently sent to a terminal according to the corresponding relationship of configured downlink transmission steam number and the special pilot structure, wherein the special pilot structure comprises a special pilot area and the transmission mode information of special pilot in the special pilot area, wherein the special pilot area indicates an area of partial data except last two symbols and a symbol of common pilot; and mapping and then sending the downlink transmission steams needing to be currently sent to the terminal and the corresponding special pilot according to a subframe structure and the determined special pilot structure.

Description

The transmission method of downlink data and device in a kind of advanced person's the long evolving system

Technical field

The present invention relates to communication technical field, refer to especially transmission method and the device of downlink data in a kind of advanced person's the long evolving system.

Background technology

Advanced Long Term Evolution (LTE-Advanced, LTE-A) standardization effort carries out, and for satisfying the requirement of its peak rate, 8X8MIMO becomes guardian technique.In this case, just need to the reference signal of these 8 antenna ports be configured respectively, and then when guaranteeing systematic function, reduce as much as possible the expense of being introduced by reference signal.Be the pilot-frequency expense of control LTE-A system, demodulation employing dedicated pilot has been determined in third generation partner program (3rd Generation Partnership Project, 3GPP) meeting, measures and adopts measurement pilot frequency.

The feature of dedicated pilot: (1) only sends at Physical Resource Block (Physical ResourceBlock, PRB) and the stream of user's scheduling.(2) pilot tone between the various flows guarantees quadrature.(3) dedicated pilot and data are unified the expense of weighting (4) dedicated pilot: 1-2 stream and are 12/PRB, and 3-8 stream mostly is 24/PRB most.

At present, the concrete scheme of dedicated pilot does not determine that the someone has proposed to have guaranteed about the discussion of dedicated pilot the performance of common subframe, but can't guarantee the performance of special time slot.

Summary of the invention

The invention provides the transmission method of downlink data in a kind of advanced person's the long evolving system, the dedicated pilot that solves the multithread transmission sends problem, and the transmission performance of nearly possible assurance special time slot.

The sending method of downlink data in a kind of advanced person's provided by the invention long evolving system comprises:

According to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine that current needs send to the dedicated pilot structure corresponding to downlink transfer fluxion of terminal,

Wherein, described dedicated pilot structure comprise dedicated pilot zone and in this dedicated pilot zone the transmission means information of special-purpose pilot tone, described dedicated pilot zone refers to that the partial data except latter two symbol and public guide frequency place symbol is regional;

According to subframe structure and definite dedicated pilot structure, send after current needs are sent to the downlink transfer stream of terminal and corresponding dedicated pilot mapping.

The dispensing device of downlink data in a kind of advanced person's that the embodiment of the invention provides the long evolving system comprises:

Selected cell, be used for according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine that current needs send to the dedicated pilot structure corresponding to downlink transfer fluxion of terminal, wherein, described dedicated pilot structure comprise dedicated pilot zone and in this dedicated pilot zone the transmission means information of special-purpose pilot tone, described dedicated pilot zone refers to that the partial data except latter two symbol and public guide frequency place symbol is regional;

Transmitting element is used for according to subframe structure and definite dedicated pilot structure, sends after current needs are sent to the downlink transfer stream of terminal and corresponding dedicated pilot mapping.

The method of reseptance of downlink data in a kind of advanced person's that the embodiment of the invention provides the long evolving system comprises:

According to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine the current dedicated pilot structure corresponding to downlink transfer fluxion that will receive,

Carry out channel estimating and signal demodulation according to subframe structure and definite dedicated pilot structure.

The receiving system of downlink data in a kind of advanced person's that the embodiment of the invention provides the long evolving system comprises:

Selected cell, be used for according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine the current dedicated pilot structure corresponding to downlink transfer fluxion that will receive, wherein, described dedicated pilot structure comprise dedicated pilot zone and in this dedicated pilot zone the transmission means information of special-purpose pilot tone, described dedicated pilot zone refers to that the partial data except latter two symbol and public guide frequency place symbol is regional;

Receiving element is used for carrying out channel estimating and signal demodulation according to subframe structure and definite dedicated pilot structure.

In embodiments of the present invention, can be for the different dedicated pilot structure of one or more transport stream configurations, the dedicated pilot that solves one or multithread transmission sends problem, and, because the configure dedicated pilot configuration is regional for the partial data except latter two symbol and public guide frequency place symbol, the transmission performance in assurance DwPTS territory that therefore, can be closely possible.

Description of drawings

Fig. 1 is the schematic flow sheet of sending method of the downlink data of the embodiment of the invention;

Fig. 2 is the schematic flow sheet of method of reseptance of the downlink data of the embodiment of the invention;

Fig. 3 a, 3c, 3e, 3g, 3i and 3k be in the embodiment of the invention when descending transport stream number is 1 or 2 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 4;

Fig. 3 b, 3d, 3f, 3h, 3j and 3l be in the embodiment of the invention when descending transport stream number is 1 or 2 and the schematic diagram of public guide frequency four dedicated pilot structure when being 2;

Fig. 4 a, 4c, 4e, 4g, 4i, 4k and 4m be in the embodiment of the invention when descending transport stream number is 3 or 4 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 4;

Fig. 4 b, 4d, 4f, 4h, 4j, 4l and 4n be in the embodiment of the invention when descending transport stream number is 3 or 4 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 2;

Fig. 5 a, 5c, 5e, 5g, 5i, 5k, 5m, 5o and 5q be in the embodiment of the invention when descending transport stream number is 3 or 4 and the schematic diagram of public guide frequency nine kinds of dedicated pilot structure when being 4;

Fig. 5 b, 5d, 5f, 5h, 5j, 5l, 5n, 5p and 5r be in the embodiment of the invention when descending transport stream number is 5～8 and the schematic diagram of public guide frequency nine kinds of dedicated pilot structure when being 4;

Fig. 6 is the structural representation of dispensing device of the downlink data of the embodiment of the invention;

Fig. 7 is the structural representation of receiving system of the downlink data of the embodiment of the invention;

Fig. 8 a, 8c, 8e and 8g be in the embodiment of the invention when descending transport stream number is 1 or 2 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 4;

Fig. 8 b, 8d, 8f, 8h, 8i, 8j, 8k and 8l be in the embodiment of the invention when descending transport stream number is 1 or 2 and the schematic diagram of public guide frequency four dedicated pilot structure when being 2;

Fig. 9 a, 9c, 9e and 9g be in the embodiment of the invention when descending transport stream number is 3 or 4 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 4;

Fig. 9 b, 9d, 9f, 9h, 9i, 9j, 9k, 9l and 9m be in the embodiment of the invention when descending transport stream number is 3 or 4 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 2;

Figure 10 a, 10c and 10e be in the embodiment of the invention when descending transport stream number is 3 or 4 and the schematic diagram of public guide frequency nine kinds of dedicated pilot structure when being 4;

Figure 10 b, 10d, 10f, 10g, 10h and 10i be in the embodiment of the invention when descending transport stream number is 5～8 and the schematic diagram of public guide frequency nine kinds of dedicated pilot structure when being 4.

Embodiment

In embodiments of the present invention, at transmitting terminal, according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine that current needs send to the dedicated pilot structure corresponding to downlink transfer fluxion of terminal.Accordingly, at receiving terminal, according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine the current dedicated pilot structure corresponding to downlink transfer fluxion that will receive, carry out channel estimating and signal demodulation according to subframe structure and definite dedicated pilot structure.Wherein, described dedicated pilot structure comprise dedicated pilot zone and in this dedicated pilot zone the transmission means information of special-purpose pilot tone, described dedicated pilot zone refers to that the partial data except latter two symbol and public guide frequency place symbol is regional; According to subframe structure and definite dedicated pilot structure, send after current needs are sent to the downlink transfer stream of terminal and corresponding dedicated pilot mapping.

Such as: in the transmission technology of supporting multiple antenna Enhanced Technology, select suitable dedicated pilot structure according to downlink transfer fluxion and subframe structure; According to dedicated pilot structure, common pilot configuration, information mapping (enum) data and the dedicated pilots such as the configuration of grouping Dedicated Control Channel (Packet Dedicated Control Channel, PDCCH), and do weighting and process, and then be mapped on the antenna port.Configuration information according to public guide frequency (comprising CRS and/or CSI-RS) is each antenna port configuration public reference signal; After the data of antenna port are carried out OFDM (Orthogonal Frequency Division Multiplexing, OFDM) conversion, by physical antenna mapping and transmission.Receiving terminal selects suitable dedicated pilot information to carry out channel estimating and signal demodulation according to downlink transfer fluxion and subframe structure.

Referring to shown in Figure 1, the sending method of downlink data may further comprise the steps in the embodiment of the invention:

Step 101: according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine that current needs send to the dedicated pilot structure corresponding to downlink transfer fluxion of terminal, wherein, described dedicated pilot structure comprise dedicated pilot zone and in this dedicated pilot zone the transmission means information of special-purpose pilot tone, described dedicated pilot zone refers to that the partial data except latter two symbol and public guide frequency place symbol is regional.

When descending transport stream number comprised one or two, the transmission means information of described dedicated pilot can comprise: frequency domain code division multiplexing (CDMF) mode, or time domain code division multiplexing (CDMT) mode.

When descending transport stream number comprised three or four, the transmission means information of described dedicated pilot can comprise: CDMF and frequency division multiplexing (FDM) mode; Or CDMF and time division multiplexing (TDM) mode; Or CDMT and FDM mode.

When descending transport stream packets was drawn together five, six, seven or eight, the transmission means information of described dedicated pilot can comprise: code division multiplexing (CDM) and FDM mode; Or, the CDM mode; Or CDMF, FDM and TDM mode; Or CDM, FDM and TDM mode; Or CDMT and FDM mode.

Described common subframe can be the subframe with conventional CP, also can be the subframe with expansion CP.Described descending pilot frequency time slot is the DWPTS with conventional CP, or has the DWPTS of expansion CP.

When described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, when descending transport stream number comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone can comprise: one or several symbol in the 4th, 6,7,10 and 11 in the subframe.

When described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, when descending transport stream number comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone can comprise: one or several symbol in the 4th, 6,7,9,10 and 11 in the subframe.

When described common subframe or/and descending pilot frequency time slot DWPTS has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: have in the subframe of expansion CP one or several symbol in the 5th, 6 and 9.

When described common subframe or/and descending pilot frequency time slot DWPTS has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: have in the subframe of conventional CP one or several symbol in the 5th, 6,7 and 8.

Here, the R8 public guide frequency port maximum number of system configuration refers to the maximum number of each base station of disposing in the communication system.

Need to prove that if comprise a plurality of dedicated pilots in the pilot configuration, and take a plurality of OFDM symbols, these a plurality of pilot tones can take identical subcarrier or different subcarriers on frequency.

If in the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, the corresponding a plurality of dedicated pilot structure of downlink transfer fluxion, corresponding one or more R8 public guide frequency port arrangement of each dedicated pilot structure, then can be according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, and the port number in the antenna port configuration information of current system configuration and certain rule, select corresponding dedicated pilot structure.

And in embodiments of the present invention, described dedicated pilot structure can be the pilot configuration of common subframe, or is the pilot configuration in descending pilot frequency time slot (DwPTS) territory, or is the unified pilot configuration that uses in common subframe and DwPTS territory.

Step 102: according to subframe structure and definite dedicated pilot structure, send by down channel after current needs are sent to the downlink transfer stream of terminal and corresponding dedicated pilot mapping.

Based on the sending method of above-mentioned downlink data, corresponding, receiving terminal also has corresponding receive mode.

Referring to shown in Figure 2, the method for reseptance of the downlink data of the embodiment of the invention may further comprise the steps:

Step 201: according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine the current dedicated pilot structure corresponding to downlink transfer fluxion that will receive, wherein, described dedicated pilot structure comprise dedicated pilot zone and in this dedicated pilot zone the transmission means information of special-purpose pilot tone, described dedicated pilot zone refers to that the partial data except latter two symbol and public guide frequency place symbol is regional.

Here, for the correct demodulation downlink data of energy, end side need to be known the dedicated pilot structure the same with network.Therefore, network side and end side all need to preserve same downlink transfer fluxion and the corresponding relation of dedicated pilot structure.

When descending transport stream number comprised one or two, the transmission means information of described dedicated pilot comprised: frequency domain code division multiplexing CDMF mode, or time domain code division multiplexing CDMT mode.

When descending transport stream number comprised three or four, the transmission means information of described dedicated pilot comprised:

CDMF and frequency division multiplexing FDM mode; Or CDMF and time division multiplexing tdm mode; Or CDMT and FDM mode.

When descending transport stream packets was drawn together five, six, seven or eight, the transmission means information of described dedicated pilot comprised: code division multiplexing CDM and FDM mode; Or, the CDM mode; Or CDMF, FDM and TDM mode; Or CDM, FDM and TDM mode; Or CDMT and FDM mode.

Described dedicated pilot structure is the pilot configuration of common subframe, or is the pilot configuration in descending pilot frequency time slot DwPTS territory, or is both unified pilot configurations that uses.

Described common subframe is the subframe with conventional CP, or for having the subframe of expansion CP, described descending pilot frequency time slot is the DWPTS with conventional CP, or has the DWPTS of expansion CP.

When described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if when descending transport stream number comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,10 and 11 in the subframe.

When described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if when descending transport stream number comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,9,10 and 11 in the subframe.

When described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: have in the subframe of expansion CP one or several symbol in the 5th, 6 and 9.

When described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: have in the subframe of conventional CP one or several symbol in the 5th, 6,8 and 9.

If in the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, the corresponding a plurality of dedicated pilot structure of downlink transfer fluxion, corresponding one or more R8 public guide frequency port arrangement of each dedicated pilot structure, then

Then determine the current dedicated pilot structure corresponding to downlink transfer fluxion that will receive, comprising:

According to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, and the port number in the antenna port configuration information of current system configuration and certain rule, corresponding dedicated pilot structure selected.

Step 202: carry out channel estimating and signal demodulation according to subframe structure and definite dedicated pilot structure.For

The below lifts specific embodiment and describes pilot configuration of the present invention in detail.And, be the design of the explanation dedicated pilot as an example of the common subframe of PDCCH=3 example in following examples, but the dedicated pilot design that this patent proposes is not limited in this configuration.

Wherein, C represents the resource element (RE) of control channel among the figure, and D represents the resource element (RE) of the transmission of data.R0-R3 represents respectively corresponding 4 R8 public guide frequencies (CRS) port.And, be the time laterally among the figure, be followed successively by from left to right the 1st～14th OFDM symbol, vertically be frequency, be followed successively by from bottom to up the 1st～the 12nd subcarrier, not shown concrete numbering.

Embodiment 1 is the situation of the dedicated pilot structure of 1-2 flow transmission:

Fig. 3 a, 3c, 3e, 3g, 3i and 3k be in the embodiment of the invention when descending transport stream number is 1 or 2 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 4; Fig. 3 b, 3d, 3f, 3h, 3j and 3l be in the embodiment of the invention when descending transport stream number is 1 or 2 and the schematic diagram of public guide frequency four dedicated pilot structure when being 2.Pilot configuration among Fig. 3 a～3l both can be used as the general pilot configuration of common subframe and DWPTS territory, also can be used as the dedicated pilot structure of DWPTS territory commissioner's office.When DWPTS=3 symbol (symbols), do not need dedicated pilot.Work as DWPTS=9,10,11,12symbols adopts dedicated pilot structure such as following a kind of in several.If dedicated pilot place symbol is not in the DWPTS city, then this row pilot tone does not send yet.

Shown in Fig. 3 a and Fig. 3 b, two dedicated pilots can in frequency domain expansion, namely adopt frequency domain code division multiplexing (CDMF) mode.Wherein, 01 be expressed as LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), distinguish by orthogonal code between the stream and in frequency domain expansion.

Shown in Fig. 3 c and Fig. 3 d, two dedicated pilots can be in frequency domain expansion, and namely multiplex mode adopts the CDMF mode.Wherein, 01 be expressed as LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers), distinguish by orthogonal code between the stream and in frequency domain expansion.

Shown in Fig. 3 e and Fig. 3 f, two dedicated pilots can be in frequency domain expansion, and namely multiplex mode adopts the CDMF mode.01 expression LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), distinguish by orthogonal code between the stream and in frequency domain expansion.

Shown in Fig. 3 g and Fig. 3 h, two dedicated pilots can be in frequency domain expansion, and namely multiplex mode adopts the CDMF mode.01 expression LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), expand by the orthogonal code differentiation and in time domain between the stream.

Shown in Fig. 3 i and Fig. 3 j, two dedicated pilots can in frequency domain expansion, namely adopt frequency domain code division multiplexing (CDMF) mode.Wherein, 01 be expressed as LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), distinguish by orthogonal code between the stream and in frequency domain expansion.

Shown in Fig. 3 k and Fig. 3 l, two dedicated pilots can be in frequency domain expansion, and namely multiplex mode adopts the CDMF mode.Wherein, 01 be expressed as LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), distinguish by orthogonal code between the stream and in frequency domain expansion.

The dedicated pilot structure of embodiment 2:3-4 flow transmission

Fig. 4 a, 4c, 4e, 4g, 4i, 4k and 4m be in the embodiment of the invention when descending transport stream number is 3 or 4 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 4; Fig. 4 b, 4d, 4f, 4h, 4j, 4l and 4n be in the embodiment of the invention when descending transport stream number is 3 or 4 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 2.Pilot configuration among Fig. 4 a～4n both can be used as the general pilot configuration of common subframe and DWPTS territory, also can be used as the dedicated pilot structure of DWPTS territory commissioner's office.DWPTS=3symbols does not need dedicated pilot.DWPTS=9,10,11,12symbols adopt a kind of in several of dedicated pilot structure such as following 4.If dedicated pilot place symbol is not in the DWPTS territory, then this row pilot tone does not send yet.

Shown in Fig. 4 a and Fig. 4 b, multiplex mode is CDMF+FDM.01 expression LTE-A dedicated pilot (layer1, layer2/4layers) is wherein distinguished by orthogonal code between the stream and in frequency domain expansion.23 expression LTE-A dedicated pilots (layer3, layer4/4layers) are distinguished by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Shown in Fig. 4 c and Fig. 4 d, multiplex mode is CDMF+FDM.Wherein, 01 expression LTE-A dedicated pilot (layer1, layer2/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.23 expression LTE-A dedicated pilots (layer3, layer4/4layers) are distinguished by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Shown in Fig. 4 e and Fig. 4 f, multiplex mode is CDMF+TDM.Wherein, 01 expression LTE-A dedicated pilot (layer1, layer2/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.23:LTE-A dedicated pilot (layer3, layer4/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the TDM mode to distinguish between the layer4.

Shown in Fig. 4 g and Fig. 4 h, multiplex mode is CDMT+FDM.Wherein, 01 expression LTE-A dedicated pilot (layer1, layer2/4layers) is expanded by the orthogonal code differentiation and in time domain between the stream.23:LTE-A dedicated pilot (layer3, layer4/4layers) is expanded by the orthogonal code differentiation and in time domain between the stream.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Shown in Fig. 4 i and Fig. 4 j, multiplex mode is CDMF+FDM.01 expression LTE-A dedicated pilot (layer1, layer2/4layers) is wherein distinguished by orthogonal code between the stream and in frequency domain expansion.23 expression LTE-A dedicated pilots (layer3, layer4/4layers) are distinguished by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Shown in Fig. 4 k and Fig. 4 l, multiplex mode is CDMF+FDM.Wherein, 01 expression LTE-A dedicated pilot (layer1, layer2/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.23 expression LTE-A dedicated pilots (layer3, layer4/4layers) are distinguished by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

The dedicated pilot structure of embodiment 3:5-8 flow transmission.

Fig. 5 a, 5c, 5e, 5g, 5i, 5k, 5m, 5o and 5q be in the embodiment of the invention when descending transport stream number is 3 or 4 and the schematic diagram of public guide frequency nine kinds of dedicated pilot structure when being 4; Fig. 5 b, 5d, 5f, 5h, 5j, 5l, 5n, 5p and 5r be in the embodiment of the invention when descending transport stream number is 5～8 and the schematic diagram of public guide frequency nine kinds of dedicated pilot structure when being 4.In Fig. 5 a～Fig. 5 r, this pilot configuration both can be used as the general pilot configuration of common subframe and DWPTS territory, also can be used as the dedicated pilot structure of DWPTS territory commissioner's office.DWPTS=3symbols does not need dedicated pilot.DWPTS=9,10,11,12symbols adopt dedicated pilot structure such as following a kind of in several.If dedicated pilot place symbol is not in the DWPTS territory, then this row pilot tone does not send yet.

Shown in Fig. 5 a and Fig. 5 b, multiplex mode is CDM+FDM.0-3 represents LTE-A dedicated pilot (layer1-layer4/8layers), expands by the orthogonal code differentiation and at time-frequency domain between the stream.4-7 represents LTE-A dedicated pilot (layer5-layer8/8layers), expands by the orthogonal code differentiation and at time-frequency domain between the stream.Adopt the FDM mode to distinguish between layer1-layer4 and the layer5-layer8.

Shown in Fig. 5 c and Fig. 5 d, multiplex mode is the CDM mode.0-7 represents LTE-A dedicated pilot (layer1-layer8/8layers), expands by the orthogonal code differentiation and at time-frequency domain between the stream.

Shown in Fig. 5 e and Fig. 5 f, multiplex mode is the CDMF+FDM+TDM mode.N (n+1) is expressed as LTE-A dedicated pilot (layer n+1, layer n+2/8layers), distinguishes by orthogonal code between the stream and in frequency domain expansion.Layer n+1, layer n+2 and layer m+1, layer m+2 (adopts the FDM mode to distinguish between the m ≠ n).

Shown in Fig. 5 g and Fig. 5 h, multiplex mode is the CDM+FDM mode.0-3:LTE-A dedicated pilot (layer1-layer4/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream; 4-7:LTE-A dedicated pilot (layer5-layer8/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream.Adopt the FDM mode to distinguish between layer1-layer4 and the layer5-layer8.

Shown in Fig. 5 i and Fig. 5 j, multiplex mode is the CDM mode.Wherein, 0-7:LTE-A dedicated pilot (layer1-layer8/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream;

Shown in Fig. 5 k and Fig. 5 l, multiplex mode is the CDMF+FDM+TDM mode.N (n+1): LTE-A dedicated pilot (layer n+1, layer n+2/8layers), distinguish by orthogonal code between the stream and in frequency domain expansion; Layer n+1, layer n+2 and layer m+1, layer m+2 (adopts the FDM mode to distinguish between the m ≠ n).

Shown in Fig. 5 m and Fig. 5 n, multiplex mode is the CDM+TDM+FDM mode.Wherein, 0-3:LTE-A dedicated pilot (layer1-layer4/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream; 4-7:LTE-A dedicated pilot (layer5-layer8/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream.Adopt the FDM+TDM mode to distinguish between layer1-layer4 and the layer5-layer8

Shown in Fig. 5 o and Fig. 5 p, multiplex mode is the CDMT+FDM mode.Wherein, 0-3:LTE-A dedicated pilot (layer1-layer4/8layers) is expanded by the orthogonal code differentiation and in time domain between the stream; 4-7:LTE-A dedicated pilot (layer5-layer8/8layers) is expanded by the orthogonal code differentiation and in time domain between the stream.Adopt the FDM mode to distinguish between layer1-layer4 and the layer5-layer8.

Shown in Fig. 5 q and Fig. 5 q, multiplex mode is the CDM mode.0-7:LTE-A dedicated pilot (layer1-layer8/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream.

The below take the expansion CP subframe structure as example, further specify technical scheme of the present invention.

Wherein, C represents the resource element (RE) of control channel among the figure, and D represents the resource element (RE) of the transmission of data.R0-R3 represents respectively corresponding 4 R8 public guide frequencies (CRS) port.And, be the time laterally among the figure, be followed successively by from left to right the 1st～12nd OFDM symbol, vertically be frequency, be followed successively by from bottom to up the 1st～the 12nd subcarrier, not shown concrete numbering.Here, have the expansion CP subframe in comprise 12 OFDM symbols, when public guide frequency was 4, public guide frequency R0-R3 took the 1st, 2,4,7,8 and 10 OFDM symbol, when public guide frequency was 2, public guide frequency R0-R1 took the 1st, 4,7 and 10 OFDM symbol.

The dedicated pilot structure of embodiment 1:1-2 flow transmission

Fig. 8 a, 8c, 8e and 8g be in the embodiment of the invention when descending transport stream number is 1 or 2 and the schematic diagram of public guide frequency four kinds of dedicated pilot structure when being 4; Fig. 8 b, 8d, 8f, 8h, 8i, 8j, 8k and 8l be in the embodiment of the invention when descending transport stream number is 1 or 2 and the schematic diagram of public guide frequency four dedicated pilot structure when being 2.This pilot configuration both can be used as the general pilot configuration of common subframe and DWPTS territory, also can be used as the dedicated pilot structure of DWPTS territory commissioner's office.DWPTS=3symbols does not need dedicated pilot.DWPTS_duration=8,9,10symbols adopt a kind of among dedicated pilot structure such as the following 4options.If dedicated pilot place symbol is not in the DWPTS territory, then this row pilot tone does not send yet.

Shown in Fig. 8 a and 8b, two dedicated pilots can adopt the CDMF multiplex mode.01 is expressed as LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), distinguish by orthogonal code between the stream and in frequency domain expansion.

Among Fig. 8 a, 01 takies the 5th and the 9th OFDM symbol, and in the 5th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 1st, 2,5,6,9 and 10.In the 9th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 3rd, 4,7,8,11 and 12.Two dedicated pilots adopt code minute mode multiplexing on each subcarrier.

Among Fig. 8 b, 01 takies the 5th and the 10th OFDM symbol, and in the 5th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 1st, 2,5,6,9 and 10.In the 10th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 3rd, 4,7,8,11 and 12.Two dedicated pilots adopt code minute mode multiplexing on each subcarrier.

Shown in Fig. 8 c and Fig. 8 d, two dedicated pilots can be in frequency domain expansion, and namely multiplex mode is CDMF.01:LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), distinguish by orthogonal code between the stream and in frequency domain expansion.

Among Fig. 8 c, 01 takies the 6th and the 9th OFDM symbol, and in the 6th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 1st, 2,5,6,9 and 10.In the 9th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 3rd, 4,7,8,11 and 12.Two dedicated pilots adopt code minute mode multiplexing on each subcarrier.

Among Fig. 8 d, 01 takies the 6th and the 8th OFDM symbol, and in the 6th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 1st, 2,5,6,9 and 10.In the 9th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 3rd, 4,7,8,11 and 12.Two dedicated pilots adopt code minute mode multiplexing on each subcarrier.

Shown in Fig. 8 e and Fig. 8 f, two dedicated pilots can be in frequency domain expansion, multiplex mode: CDMF (frequency domain expansion).01:LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), distinguish by orthogonal code between the stream and in frequency domain expansion.

Among Fig. 8 e, 01 takies the 5th and the 9th OFDM symbol, and in the 5th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 3rd, 4,7,8,11 and 12.In the 9th OFDM symbol, 01 by having taken the parton carrier wave at frequency domain, and namely the 3rd, 4,7,8,11 and 12.Two dedicated pilots adopt code minute mode multiplexing on each subcarrier.

Among Fig. 8 f, 01 takies the 5th and the 8th OFDM symbol, and the subcarrier that takies in each OFDM symbol is identical with Fig. 8 e.

Shown in Fig. 8 g and Fig. 8 h, two dedicated pilots can be in frequency domain expansion, multiplex mode: CDMF (frequency domain expansion).01:LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), distinguish by orthogonal code between the stream and in frequency domain expansion.

Among Fig. 8 g, 01 takies the 6th and the 9th OFDM symbol, and the subcarrier that takies in each OFDM symbol is identical with Fig. 8 e.Among Fig. 8 h, 01 takies the 6th and the 8th OFDM symbol, and the subcarrier that takies in each OFDM symbol is identical with Fig. 8 e.

Shown in Fig. 8 i, two dedicated pilots 01 can in frequency domain expansion, adopt the CDMF multiplex mode.01:LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), expand by the orthogonal code differentiation and in time domain between the stream.01 takies the 5th and the 8th OFDM symbol, takies the 1st, 2,6,7,11 and 12 subcarriers in each OFDM symbol.

Shown in Fig. 8 j, two dedicated pilots can be expanded in time domain multiplex mode: CDMT.01:LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), expand by the orthogonal code differentiation and in time domain between the stream.Dedicated pilot 01 takies the 5th, 6,7 and 8 OFDM, and adopts the time domain extended mode multiplexing in each OFDM symbol.Take the 2nd, 7 and 12 subcarrier on the frequency domain.

Shown in Fig. 8 k, two dedicated pilots can be expanded in time domain multiplex mode: CDMT.01:LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), expand by the orthogonal code differentiation and in time domain between the stream.Dedicated pilot 01 takies the 5th, 6,7 and 8 symbol, and adopts the time domain extended mode in each OFDM symbol.In the 5th and 6 OFDM symbol, 01 takies the 4th, 8 and 12 subcarriers.In the 7th and 8 OFDM symbol, 01 takies the 2nd, 6 and 10 subcarriers.

Shown in Fig. 8 l, two dedicated pilots can be expanded in time domain multiplex mode: CDMT.01:LTE-A dedicated pilot (layer1/1layers; Layer1, layer2/2layers; ), expand by the orthogonal code differentiation and in time domain between the stream.Dedicated pilot 01 takies the 5th, 6,7 and 8 symbol, and adopts the time domain extended mode in each OFDM symbol.In the 5th and 6 OFDM symbol, 01 takies the 4th, 8 and 12 subcarriers.In the 7th and 8 OFDM symbol, 01 takies the 3rd, 7 and 11 subcarriers.

The dedicated pilot structure of embodiment 2:3-4 flow transmission

This pilot configuration both can be used as the general pilot configuration of common subframe and DWPTS territory, also can be used as the dedicated pilot structure of DWPTS territory commissioner's office.DWPTS=3symbols does not need dedicated pilot.DWPTS_duration=9,10,11,12symbols adopt a kind of among dedicated pilot structure such as the following 4options.If dedicated pilot place symbol is not in the DWPTS territory, then this row pilot tone does not send yet.

Shown in Fig. 9 a and Fig. 9 b, multiplex mode: CDMF+FDM.01:LTE-A dedicated pilot (layer1, layer2/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.23:LTE-A dedicated pilot (layer3, layer4/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Among Fig. 9 a, four dedicated pilots take the 5th and the 9th OFDM symbol, in the 5th OFDM symbol, 01 takies the 1st, 2,5,6,9 and 10 subcarrier, and adopt the FDM mode multiplexing and distinguish by orthogonal code at frequency domain, 23 take the 3rd, 4,7,8,11 and 12 subcarrier, and adopt the FDM mode multiplexing and distinguish by orthogonal code at frequency domain.In the 9th OFDM symbol, 23 take the 1st, 2,5,6,9 and 10 subcarrier, and adopt the FDM mode multiplexing and distinguish by orthogonal code at frequency domain, 01 takies the 3rd, 4,7,8,11 and 12 subcarrier, and adopts the FDM mode multiplexing and distinguish by orthogonal code at frequency domain.Shown in Fig. 9 b, four dedicated pilots take the 5th and the 8th OFDM symbol, and the situation that takies of subcarrier is similar to Fig. 9 a, repeats no more here.

Shown in Fig. 9 c and Fig. 9 d, multiplex mode: CDMF+FDM.01:LTE-A dedicated pilot (layer1, layer2/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.23:LTE-A dedicated pilot (layer3, layer4/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Among Fig. 9 c, four dedicated pilots take the 6th and the 9th OFDM symbol, and the situation that takies of subcarrier is similar to Fig. 9 a, repeats no more here.Among Fig. 9 d, four dedicated pilots take the 6th and the 8th OFDM symbol, and the situation that takies of subcarrier is similar to Fig. 9 a, repeats no more here.

Shown in Fig. 9 e and Fig. 9 f, multiplex mode: CDMF+FDM.01:LTE-A dedicated pilot (layer1, layer2/4layers) is distinguished by orthogonal code between the stream and at frequency domain expansion .23:LTE-A dedicated pilot (layer3, layer4/4layers), distinguishes by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Among Fig. 9 e, four dedicated pilots are in the 5th and the 9th OFDM symbol, 23 take the 1st, 2,5,6,9 and 10 subcarrier, and adopt the FDM mode multiplexing and distinguish by orthogonal code at frequency domain, 01 takies the 3rd, 4,7,8,11 and 12 subcarrier, and adopts the FDM mode multiplexing and distinguish by orthogonal code at frequency domain.Among Fig. 9 f, in the 5th and the 8th OFDM symbol, the situation that takies of subcarrier is similar to Fig. 9 e, repeats no more here.

Shown in Fig. 9 g and Fig. 9 h, multiplex mode: CDMF+FDM.01:LTE-A dedicated pilot (layer1, layer2/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.23:LTE-A dedicated pilot (layer3, layer4/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Among Fig. 9 g, four dedicated pilots are in the 6th and the 9th OFDM symbol, in the 6th and the 9th OFDM symbol, 23 take the 1st, 2,5,6,9 and 10 subcarrier, and adopt the FDM mode multiplexing and distinguish by orthogonal code at frequency domain, 01 takies the 3rd, 4,7,8,11 and 12 subcarrier, and adopts the FDM mode multiplexing and distinguish by orthogonal code at frequency domain.Among Fig. 9 h, four dedicated pilots are in the 6th and the 8th OFDM symbol, in the 6th and the 8th OFDM symbol, 23 take the 1st, 2,5,6,9 and 10 subcarrier, and adopt the FDM mode multiplexing and distinguish by orthogonal code at frequency domain, 01 takies the 3rd, 4,7,8,11 and 12 subcarrier, and adopts the FDM mode multiplexing and distinguish by orthogonal code at frequency domain.

Shown in Fig. 9 i, multiplex mode: CDMF+TDM.01:LTE-A dedicated pilot (layer1, layer2/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.23:LTE-A dedicated pilot (layer3, layer4/4layers) is distinguished by orthogonal code between the stream and in frequency domain expansion.Layer1, layer2 and layer3 adopt the TDM mode to distinguish between the layer4.

Among Fig. 9 i, four dedicated pilots are in the the the 5th, the 6th, the 8th and the 9th OFDM symbol, and in the 5th and the 8th OFDM symbol, 01 takies the 1st, 2,6,7,11 and 12 subcarrier, and adopt the FDM mode multiplexing and distinguish by orthogonal code at frequency domain.In the 6th and the 9th OFDM symbol, 23 take 1,2,6,711 and 12 subcarrier, and adopt the TDM mode multiplexing and distinguish by orthogonal code at frequency domain.

Shown in Fig. 9 j and 9k, multiplex mode: CDMT+FDM.01:LTE-A dedicated pilot (layer1, layer2/4layers) is expanded by the orthogonal code differentiation and in time domain between the stream.23:LTE-A dedicated pilot (layer3, layer4/4layers) is expanded by the orthogonal code differentiation and in time domain between the stream.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Among Fig. 9 j, four dedicated pilots take the 5th, 6,8 and 9 OFDM symbol, and wherein, in each OFDM symbol, 01 takies the 2nd, 7 and 12 subcarrier, and 23 take the 1st, 6 and 11 subcarrier.0～3 four dedicated pilot is distinguished by the FDM mode.Among Fig. 9 k, four dedicated pilots take the 5th, 6,8 and 9 OFDM symbol, and wherein, in the 5th and the 6th OFDM symbol, 01 takies the 2nd, 7 and 12 subcarrier, and 23 take the 1st, 6 and 11 subcarrier.0～3 four dedicated pilot is distinguished by the FDM mode.In the 8th and the 9th OFDM symbol, 23 take the 2nd, 7 and 12 subcarrier, and 01 takies the 1st, 6 and 11 subcarrier.0～3 four dedicated pilot is distinguished by the FDM mode.

Shown in Fig. 9 l, spread F DM.Multiplex mode: CDMT+FDM.01:LTE-A dedicated pilot (layer1, layer2/4layers) is expanded by the orthogonal code differentiation and in time domain between the stream.23:LTE-A dedicated pilot (layer3, layer4/4layers) is expanded by the orthogonal code differentiation and in time domain between the stream.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Wherein, four dedicated pilots take the 5th, 6,8 and 9 OFDM symbol, and in the 5th, 6 OFDM symbol, 23 take the 3rd, 7 and 11 subcarriers and expand in time domain, and 01 takies the 4th, 8 and 12 subcarriers and expands in time domain.23 take the 1st, 5 and 9 subcarriers and expand in time domain in the 8th, 9 OFDM symbol, and 01 takies the 2nd, 6 and 10 subcarriers and expands in time domain.

Shown in Fig. 9 m, shift1, spread F DM.Multiplex mode: CDMT+FDM.01:LTE-A dedicated pilot (layer1, layer2/4layers) is expanded by the orthogonal code differentiation and in time domain between the stream.23:LTE-A dedicated pilot (layer3, layer4/4layers) is expanded by the orthogonal code differentiation and in time domain between the stream.Layer1, layer2 and layer3 adopt the FDM mode to distinguish between the layer4.

Four dedicated pilots take the 5th, 6,8 and 9 OFDM symbol, and in the 5th, 6 OFDM symbol, 23 take the 3rd, 7 and 11 subcarriers and expand in time domain, and 01 takies the 4th, 8 and 12 subcarriers and expands in time domain.23 take the 2nd, 6 and 10 subcarriers and expand in time domain in the 8th, 9 OFDM symbol, and 01 takies the 3rd, 7 and 11 subcarriers and expands in time domain.

The dedicated pilot structure of embodiment 3:5-8 flow transmission (removing two column datas)

This pilot configuration both can be used as the general pilot configuration of common subframe and DWPTS territory, also can be used as the dedicated pilot structure of DWPTS territory commissioner's office.DWPTS=3symbols does not need dedicated pilot.DWPTS_duration=9,10,11,12symbols adopt dedicated pilot structure such as following a kind of in several.If dedicated pilot place symbol is not in the DWPTS territory, then this row pilot tone does not send yet.

Shown in Figure 10 a and 10b, multiplex mode: CDM+FDM.0-3:LTE-A dedicated pilot (layer1-layer4/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream.4-7:LTE-A dedicated pilot (layer5-layer8/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream.Adopt the FDM mode to distinguish between layer1-layer4 and the layer5-layer8.

Among Figure 10 a, dedicated pilot 0～7 takies the 5th and the 9th OFDM symbol, and wherein in each OFDM symbol, 4～7 take the 1st, 2,5,6,9 and 10 subcarriers, and 0～3 takies the 3rd, 4,7,8,11 and 12 subcarriers.In the dedicated pilot 0～3, distinguish by orthogonal code between each pilot tone and in frequency domain expansion.In the dedicated pilot 4～7, distinguish by orthogonal code between each each pilot tone and in frequency domain expansion.Adopt the FDM mode to distinguish between the dedicated pilot 0～3 and 4～7.Among Figure 10 a, dedicated pilot 0～7 takies the 5th and the 8th OFDM symbol, and other are similar to Figure 10 a, are not giving unnecessary details here.

Shown in Figure 10 c and 10d, multiplex mode: CDM.0-7:LTE-A dedicated pilot (layer1-layer8/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream.Among Figure 10 c, 0-7 takies the 5th and the 9th OFDM symbol.Among Figure 10 d, 0-7 takies the 5th and the 8th OFDM symbol.

Shown in Figure 10 e and 10f, multiplex mode: CDMF+FDM+TDM.N (n+1): LTE-A dedicated pilot (layer n, layer n+1/8layers), distinguish by orthogonal code between the stream and in frequency domain expansion.Layer n, layer n+1 and layer m adopt the FDM mode to distinguish between the layer m+1.

Shown in Figure 10 g, multiplex mode: CDM+TDM+FDM.0-3:LTE-A dedicated pilot (layer1-layer4/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream.4-7:LTE-A dedicated pilot (layer5-layer8/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream.Adopt the FDM+TDM mode to distinguish between layer1-layer4 and the layer5-layer8.Dedicated pilot 0-7 takies the 5th, 6,8 and 9 OFDM symbol.In the 5th and the 6th OFDM symbol, 4～7 take the 1st, 2,11 and 12 subcarriers, and 0～3 takies the 6th and 7 subcarriers.In the 8th and the 9th OFDM symbol, 0～3 takies the 1st, 2,11 and 12 subcarriers, and 4～7 take the 6th and 7 subcarriers.

Shown in Figure 10 h, multiplex mode: CDMT+FDM.0-3:LTE-A dedicated pilot (layer1-layer4/8layers) is expanded by the orthogonal code differentiation and in time domain between the stream.4-7:LTE-A dedicated pilot (layer5-layer8/8layers) is expanded by the orthogonal code differentiation and in time domain between the stream.Adopt the FDM mode to distinguish between layer1-layer4 and the layer5-layer8.0-7 takies the 5th, 6,8 and 9 OFDM symbol.Wherein, in each OFDM symbol, 4～7 take the 1st, 6 and 11 subcarriers, and 0～3 takies the 2nd, 7 and 12 subcarriers.

Shown in Figure 10 i, multiplex mode: CDM.0-7:LTE-A dedicated pilot (layer1-layer8/8layers) is expanded by the orthogonal code differentiation and at time-frequency domain between the stream.0-7 takies the 5th, 6,8 and 9 OFDM symbol.

The present invention just provides indivedual dedicated pilot structure in the above-described embodiments, and the pilot configuration of the embodiment of the invention is followed following principle substantially:

Pilot tone is distributed in the edge of Resource Block as far as possible, avoids the extrapolation loss of channel estimating; Pilot tone guarantees that as far as possible time-frequency domain evenly places, and improves the performance of a plurality of Resource Block joint channel estimations; Avoid and associated control channel, such as PDCCH, the collisions such as SCH.Avoid and the public guide frequency collision, comprise R8 public guide frequency and measurement pilot frequency.Do not take as far as possible identical symbol; For different transmission mode (comprising the situation that fluxion is different), adopt unified pilot configuration as far as possible.Under the same mode, also adopt similar or identical structure between the various flows as far as possible.The total amount of effective control channel estimation module; Be convenient to the design of power control, the power control here comprises under the MU-MIMO pattern that different user distributes different power.

Referring to shown in Figure 6, the dispensing device of downlink data in a kind of advanced person's of the embodiment of the invention the long evolving system comprises: selected cell 61 and transmitting element 62.

Selected cell 61, be used for according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine that current needs send to the dedicated pilot structure corresponding to downlink transfer fluxion of terminal, wherein, described dedicated pilot structure comprise dedicated pilot zone and in this dedicated pilot zone the transmission means information of special-purpose pilot tone, described dedicated pilot zone refers to that the partial data except latter two symbol and public guide frequency place symbol is regional;

Transmitting element 62 is used for according to subframe structure and definite dedicated pilot structure, sends after current needs are sent to the downlink transfer stream of terminal and corresponding dedicated pilot mapping.

When descending transport stream number comprised three or four, the transmission means information of described dedicated pilot can comprise: CDMF and frequency division multiplexing FDM mode; Or CDMF and time division multiplexing tdm mode; Or CDMT and FDM mode.

Described dedicated pilot structure can be the pilot configuration of common subframe, also can be the pilot configuration in descending pilot frequency time slot DwPTS territory, or is both unified pilot configurations that uses.Described common subframe is the subframe with conventional CP, or for having the subframe of expansion CP, described descending pilot frequency time slot is the DWPTS with conventional CP, or has the DWPTS of expansion CP.

When descending transport stream packets was drawn together five, six, seven or eight, the transmission means information of described dedicated pilot can comprise: code division multiplexing CDM and FDM mode; Or, the CDM mode; Or CDMF, FDM and TDM mode; Or CDM, FDM and TDM mode; Or CDMT and FDM mode.

When described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone can comprise: one or several symbol in the 4th, 6,7,10 and 11 in the subframe.

When described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone can comprise: one or several symbol in the 4th, 6,7,9,10 and 11 in the subframe.

When described common subframe or/and descending pilot frequency time slot when having conventional CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: have in the subframe of expansion CP one or several symbol in the 5th, 6 and 9.

When described common subframe or/and descending pilot frequency time slot when having conventional CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: have in the subframe of conventional CP one or several symbol in the 5th, 6,7 and 8.

If in the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, the corresponding a plurality of dedicated pilot structure of downlink transfer fluxion, corresponding one or more R8 public guide frequency ports of each dedicated pilot structure, described selected cell then, be used for according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, and the port number in the antenna port configuration information of current system configuration and certain rule, select corresponding dedicated pilot structure.

Referring to shown in Figure 7, the receiving system of downlink data in a kind of advanced person's of the embodiment of the invention the long evolving system comprises: selected cell 71 and receiving element 72.

Selected cell 71, be used for according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, determine the current dedicated pilot structure corresponding to downlink transfer fluxion that will receive, wherein, described dedicated pilot structure comprise dedicated pilot zone and in this dedicated pilot zone the transmission means information of special-purpose pilot tone, described dedicated pilot zone refers to that the partial data except latter two symbol and public guide frequency place symbol is regional;

Receiving element 72 is used for carrying out channel estimating and signal demodulation according to subframe structure and definite dedicated pilot structure.

Described dedicated pilot structure is the pilot configuration of common subframe, or is the pilot configuration in descending pilot frequency time slot DwPTS territory, or is both unified pilot configurations that uses.Described common subframe is the subframe with conventional CP, or is the subframe with expansion CP,

Described descending pilot frequency time slot is the DWPTS with conventional CP, or has the DWPTS of expansion CP.

When described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone can comprise: one or several symbol in the 4th, 6,7,9,10 and 11 in the subframe.

When described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: have in the subframe of conventional CP one or several symbol in the 5th, 6,9 and 9.

If in the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, the corresponding a plurality of dedicated pilot structure of downlink transfer fluxion, corresponding one or more R8 public guide frequency port arrangement of each dedicated pilot structure,

Then described selected cell is used for according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, and the port number in the antenna port configuration information of current system configuration and certain rule, selects corresponding dedicated pilot structure.

In embodiments of the present invention, can be for the different dedicated pilot structure of a plurality of transport stream configurations, the dedicated pilot that solves the multithread transmission sends problem, and, because the configure dedicated pilot configuration is regional for the partial data except latter two symbol and public guide frequency place symbol; The performance in assurance DwPTS territory that therefore, can be closely possible.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. the sending method of downlink data in an advanced person the long evolving system is characterized in that the method may further comprise the steps:

2. method according to claim 1 is characterized in that, when descending transport stream number comprised one or two, the transmission means information of described dedicated pilot comprised: frequency domain code division multiplexing CDMF mode, or time domain code division multiplexing CDMT mode.

3. method according to claim 1 is characterized in that, when descending transport stream number comprised three or four, the transmission means information of described dedicated pilot comprised:

CDMF and frequency division multiplexing FDM mode; Or

CDMF and time division multiplexing tdm mode; Or

CDMT and FDM mode.

4. method according to claim 1 is characterized in that, when descending transport stream packets was drawn together five, six, seven or eight, the transmission means information of described dedicated pilot comprised:

Code division multiplexing CDM and FDM mode; Or,

The CDM mode; Or

CDMF, FDM and TDM mode; Or

CDM, FDM and TDM mode; Or

CDMT and FDM mode.

5. method according to claim 1 is characterized in that, described dedicated pilot structure is the pilot configuration of common subframe, or is the pilot configuration of descending pilot frequency time slot, or is both unified pilot configurations that uses.

6. method according to claim 5 is characterized in that, described common subframe is the subframe with conventional CP, or is the subframe with expansion CP,

7. method according to claim 6, it is characterized in that, when described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,10 and 11 in the subframe.

8. method according to claim 6, it is characterized in that, when described common subframe or/and descending pilot frequency time slot when having conventional CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,9,10 and 11 in the subframe.

9. method according to claim 6, it is characterized in that, when described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: have in the subframe of expansion CP one or several symbol in the 5th, 6 and 9.

10. method according to claim 6, it is characterized in that, when described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: have in the subframe of conventional CP one or several symbol in the 5th, 6,8 and 9.

11. method according to claim 1, it is characterized in that, if in the corresponding relation of the downlink transfer fluxion of configuration and dedicated pilot structure, the corresponding a plurality of dedicated pilot structure of downlink transfer fluxion, corresponding one or more R8 public guide frequency port arrangement of each dedicated pilot structure, then

Determine that then current needs send to the dedicated pilot structure corresponding to downlink transfer fluxion of terminal, comprising:

12. the dispensing device of downlink data is characterized in that in an advanced person the long evolving system, comprising:

13. device according to claim 12 is characterized in that, when descending transport stream number comprised one or two, the transmission means information of described dedicated pilot comprised: frequency domain code division multiplexing CDMF mode, or time domain code division multiplexing CDMT mode.

14. device according to claim 12 is characterized in that, when descending transport stream number comprised three or four, the transmission means information of described dedicated pilot comprised:

CDMF and frequency division multiplexing FDM mode; Or

CDMF and time division multiplexing tdm mode; Or

CDMT and FDM mode.

15. device according to claim 12 is characterized in that, when descending transport stream packets was drawn together five, six, seven or eight, the transmission means information of described dedicated pilot comprised:

Code division multiplexing CDM and FDM mode; Or,

The CDM mode; Or

CDMF, FDM and TDM mode; Or

CDM, FDM and TDM mode; Or

CDMT and FDM mode.

16. device according to claim 12 is characterized in that, described dedicated pilot structure is the pilot configuration of common subframe, or is the pilot configuration in descending pilot frequency time slot DwPTS territory, or is both unified pilot configurations that uses.

17. device according to claim 16 is characterized in that, described common subframe is the subframe with conventional CP, or is the subframe with expansion CP,

18. device according to claim 17, it is characterized in that, when described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,10 and 11 in the subframe.

19. device according to claim 17, it is characterized in that, when described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,9,10 and 11 in the subframe.

20. device according to claim 17, it is characterized in that, when described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: have in the subframe of expansion CP one or several symbol in the 5th, 6 and 9.

21. device according to claim 17, it is characterized in that, when described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: have in the subframe of conventional CP one or several symbol in the 5th, 6,8 and 9.

22. device according to claim 12, it is characterized in that, if in the corresponding relation of the downlink transfer fluxion of configuration and dedicated pilot structure, the corresponding a plurality of dedicated pilot structure of downlink transfer fluxion, corresponding one or more R8 public guide frequency port arrangement of each dedicated pilot structure

23. the method for reseptance of downlink data is characterized in that in an advanced person the long evolving system, the method may further comprise the steps:

24. method according to claim 23 is characterized in that, when descending transport stream number comprised one or two, the transmission means information of described dedicated pilot comprised: frequency domain code division multiplexing CDMF mode, or time domain code division multiplexing CDMT mode.

25. method according to claim 23 is characterized in that, when descending transport stream number comprised three or four, the transmission means information of described dedicated pilot comprised:

CDMF and frequency division multiplexing FDM mode; Or

CDMF and time division multiplexing tdm mode; Or

CDMT and FDM mode.

26. method according to claim 23 is characterized in that, when descending transport stream packets was drawn together five, six, seven or eight, the transmission means information of described dedicated pilot comprised:

Code division multiplexing CDM and FDM mode; Or,

The CDM mode; Or

CDMF, FDM and TDM mode; Or

CDM, FDM and TDM mode; Or

CDMT and FDM mode.

27. method according to claim 23 is characterized in that, described dedicated pilot structure is the pilot configuration of common subframe, or is the pilot configuration of descending pilot frequency time slot, or is both unified pilot configurations that uses.

28. method according to claim 27 is characterized in that, described common subframe is the subframe with conventional CP, or is the subframe with expansion CP,

29. method according to claim 28, it is characterized in that, when described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if when descending transport stream number comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,10 and 11 in the subframe.

30. method according to claim 28, it is characterized in that, when described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if when descending transport stream number comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,9,10 and 11 in the subframe.

31. method according to claim 28, it is characterized in that, when described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: have in the subframe of expansion CP one or several symbol in the 5th, 6 and 9.

32. method according to claim 28, it is characterized in that, when described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: have in the subframe of conventional CP one or several symbol in the 5th, 6,9 and 9.

33. method according to claim 23, it is characterized in that, if in the corresponding relation of the downlink transfer fluxion of configuration and dedicated pilot structure, the corresponding a plurality of dedicated pilot structure of downlink transfer fluxion, corresponding one or more R8 public guide frequency port arrangement of each dedicated pilot structure, then

34. the receiving system of downlink data is characterized in that in an advanced person the long evolving system, comprising:

35. device according to claim 34 is characterized in that, when descending transport stream number comprised one or two, the transmission means information of described dedicated pilot comprised: frequency domain code division multiplexing CDMF mode, or time domain code division multiplexing CDMT mode.

36. device according to claim 34 is characterized in that, when descending transport stream number comprised three or four, the transmission means information of described dedicated pilot comprised:

CDMF and frequency division multiplexing FDM mode; Or

CDMF and time division multiplexing tdm mode; Or

CDMT and FDM mode.

37. device according to claim 34 is characterized in that, when descending transport stream packets was drawn together five, six, seven or eight, the transmission means information of described dedicated pilot comprised:

Code division multiplexing CDM and FDM mode; Or,

The CDM mode; Or

CDMF, FDM and TDM mode; Or

CDM, FDM and TDM mode; Or

CDMT and FDM mode.

38. device according to claim 34 is characterized in that, described dedicated pilot structure is the pilot configuration of common subframe, or is the pilot configuration of descending pilot frequency time slot, or is both unified pilot configurations that uses.

39. described device is characterized in that according to claim 38, described common subframe is the subframe with conventional CP, or is the subframe with expansion CP,

40. described device according to claim 39, it is characterized in that, when described common subframe or/and descending pilot frequency time slot when having conventional CP, if when descending transport stream number comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,10 and 11 in the subframe.

41. described device according to claim 39, it is characterized in that, when described common subframe or/and descending pilot frequency time slot DWPTS when having conventional CP, if when descending transport stream number comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: one or several symbol in the 4th, 6,7,9,10 and 11 in the subframe.

42. described device according to claim 39, it is characterized in that, when described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 4 o'clock, and described dedicated pilot zone comprises: have in the subframe of expansion CP one or several symbol in the 5th, 6 and 9.

43. described device according to claim 39, it is characterized in that, when described common subframe or/and descending pilot frequency time slot has expansion during CP, if the downlink transfer fluxion comprises one or two, and the R8 public guide frequency port number of system configuration is to the maximum at 2 o'clock, and described dedicated pilot zone comprises: have in the subframe of conventional CP one or several symbol in the 5th, 6,8 and 9.

44. device according to claim 34, it is characterized in that, if in the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, the corresponding a plurality of dedicated pilot structure of downlink transfer fluxion, corresponding one or more R8 public guide frequency port arrangement of each dedicated pilot structure, described selected cell then, be used for according to the downlink transfer fluxion of configuration and the corresponding relation of dedicated pilot structure, and the port number in the antenna port configuration information of current system configuration and certain rule, select corresponding dedicated pilot structure.