CN105187181B

CN105187181B - Method for indicating demodulated reference signal antenna port in a wireless communication system

Info

Publication number: CN105187181B
Application number: CN201510486478.4A
Authority: CN
Inventors: 金润善; 韩臸奎; 金圣泰; 延明勋; 单成; 李仁镐
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2010-02-11
Filing date: 2011-02-11
Publication date: 2019-03-22
Anticipated expiration: 2031-02-11
Also published as: CN105187181A; AU2011215025A1; AU2011215025B2; RU2674647C2; USRE48954E1; KR101688551B1; RU2012121693A; RU2015118984A; USRE48935E1; JP2015188239A; CN102754364A; CA2787834C; JP2013520066A; CN102754364B; JP5756815B2; RU2015118984A3; CA2787834A1; RU2556078C2; JP5993063B2; KR20110093564A

Abstract

It is including control information interpretation method used in the mobile communication system of terminal and base station, it includes transmission block message and the control information for demodulating reference signal (DM-RS) antenna port allocation indication information that wherein the terminal is received from the base station, the number of the transmission block of the terminal is distributed to based on the transmission block message inspection, and the DM-RS antenna port allocation indication information is explained according to the number of transmission block.

Description

Method for indicating demodulated reference signal antenna port in a wireless communication system

The application be the applying date be on February 11st, 2011, application No. is 201180009005.5, entitled " be used for The divisional application of the application for a patent for invention of the method for instruction demodulated reference signal antenna port in a wireless communication system ".

Technical field

The present invention relates generally to wireless communications, it particularly relates to for being based on such as orthogonal frequency division multiple access (OFDMA) Etc multicarrier Multiple Access scheme wireless communication system in send for user equipment (UE) channel state information with reference to letter Number method of (CSI-RS) to measure channel quality.

Background technique

The mobile communication system for being originally designed for providing voice-based service has developed into offer height at high speed The wireless packet data communication system of quality wireless data and multimedia service.Technology standardization tissue, such as third generation cooperation partner With plan (3GPP), 3GPP2 and Institute of Electrical and Electric Engineers (IEEE), it is committed to based on various multicarrier multiple access sides Case improves beyond 3G (beyond-3G) communication technology.For example, 3GPP long term evolution (LTE), 3GPP2 Ultra-Mobile Broadband (UMB) and IEEE802.16m is the shifting based on multicarrier Multiple Access scheme for supporting high speed high quality wireless block data transmission service Dynamic communication technology standard.

It is wrapped based on the 3G communication system of multicarrier Multiple Access scheme evolution, such as LTE, UMB and 802.16m using various technologies Multiple-input and multiple-output (MIMO) beam forming, adaptive modulation and coding (AMC) and channel sensitive scheduling are included, to improve transmission Efficiency.These technologies are by concentrating the transmission power of mutiple antennas or by adjusting transmission data volume and first sending data Throughput of system is improved to the user with good channel quality.Because these technologies are based on base station (that is, the node B of evolution (eNB)) channel quality information between movement station (that is, user equipment (UE)) operates, so the eNB or UE measurement letter Road quality, and CSI-RS is used for this purpose.

In mobile communication system, time, frequency and power resource are limited.Therefore, with distributing to reference signal Resource increase, traffic channel resource reduce, to reduce the data volume that can be sent.In the case, channel measurement and Estimate performance improvement, but throughput of system but has dropped.

Accordingly, it is considered to arrive throughput of system, in order to ensure optimum performance, need for the transmission of reference signal and business letter Road effectively distributes resource.

In the 3-G (Generation Three mobile communication system) standard of evolution, reference signal is divided into two classes: collective reference signal (CRS) With DRS (Dedicated Reference Signal) (DRS).In 3GPP LTE system, CRS is commonly referred to as RS or common RS specific to cell, and It is received by all UE in the cell of an eNB.In order to support to carry out channel estimation and survey to using the transmission of multiple transmission antennas Amount, defines several reference signal modes, for the differentiation between antenna port.

DRS is the additional reference signal with CRS separately send, and is sent to the particular UE selected by eNB.In 3GPP In LTE system, DRS is also referred to as the RS specific to UE and the data industry for supporting to carry out using the precoding based on non-code book Business transmission.

In the advanced LTE (LTE-A) next from LTE evolution, other than CRS and DRS, demodulated reference signal (DM- RS) for supporting up to 8 layers of channel estimation.Similar with DRS, the transmission of DM-RS and CRS separates, in a manner of specific to UE It sends.

In lte-a system, the OFDMA transmission plan transmitted downlink signal for using both frequency domain and time domain is utilized. Downlink band is divided into multiple resource blocks (RB) in a frequency domain, and each RB includes 12 subcarriers, and in the time domain Multiple subframes are divided into, each subframe includes 14 OFDM symbols.The eNB nothing to be made of one or more RB in a frequency domain Line electric resources are that unit is sent, and are sent in the time domain with subframe.By the son of an OFDM symbol duration The resource units that carrier wave defines are referred to as resource element (RE).

In single user-multiple-input and multiple-output (SU-MIMO) mode or multi-user-multiple-input and multiple-output (MU-MIMO) mode In, multilayer can be used and transmitted.It is each Layer assignment DM-RS resource for multilayer transmission.It is one in lte-a system The DM-RS resource of the channel estimation distribution of layer is referred to as the port DM-RS.Here, term DM-RS resource and the port DM-RS can be with It is used interchangeably.

Fig. 1 shows the DM-RS pattern for being designed to be used in lte-a system.

With reference to Fig. 1, reference label 100 indicates the DM-RS pattern of order (rank) 2, wherein in the DM-RS pattern of order 2, ENB is directed to two layers of transmission DM-RS.When sending two DM-RS with the DM-RS pattern of order 2 shown in Fig. 1, the two DM-RS It is utilized 2 quadrature spread of spreading factor on position 101 and 102, is then organized and is sent with code division multiplexing (CDM).In a similar manner, The DM-RS of quadrature spread is sent in position 103 and 104.In Fig. 1, continuous blue RE carries DM-RS.Therefore, two DM- The DM-RS of RS antenna port code division multiplexing (CDMed) in identical frequency and time resource.

In Fig. 1, reference label 110 indicates the DM-RS pattern of order 4, wherein eNB is directed in the DM-RS pattern of order 4 Four layers of transmission DM-RS.The DM-RS pattern of the order 4 also utilizes spreading factor 2 identical with the DM-RS pattern 100 of order 2 to extend DM-RS, other than additional RS is for four DM-RS antenna ports.Therefore, compared with the DM-RS pattern 100 of order 2, order 4 DM-RS pattern 110 there is twice of the RE for DM-RS.

In Fig. 1, reference label 120 indicates the DM-RS pattern of order 8, wherein eNB is directed in the DM-RS pattern of order 8 Eight layers of transmission DM-RS.The DM-RS pattern 120 of order 8 is sent out using the equal number of RE of DM-RS pattern 110 with order 4 for DM-RS It send.DM-RS, order are sent in order to be directed to eight DM-RS antenna ports using the equal number of RE of DM-RS pattern 110 with order 4 8 DM-RS pattern 120 is on position 105,106,107 and 108 using spreading factor 4 come quadrature spread DM-RS.

Summary of the invention

Technical problem

In lte-a system, changed by the order of the eNB signal sent with the state of downlink channel.Because eNB's The order variation for sending signal, so DM-RS pattern also changes with signal order.That is, eNB can be by the DM-RS mould of order 8 The layer that formula 120 is used to have the channel of big figure, and the layer for being used for the DM-RS pattern of order 2 100 that there is the channel of peanut. As described above, can also change because DM-RS pattern changes over time and distributes to the port DM-RS of UE, eNB should DM-RS pattern and DM-RS antenna port are notified to corresponding UE, to modulate correct downlink traffic channel.

When three DM-RS patterns in Fig. 1 can use and support most 8 DM-RS antenna ports, eNB can be with Indicate eight of DM-RS antenna port using the sum-bit of the expression DM-RS pattern of bitmap form, by DM-RS information notify to UE.That is, in order to which DM-RS resource notification to UE, is used 10 in total.It is assumed that the DM- of the DM-RS pattern of order 2, order 4 The DM-RS pattern of RS mode and order 8 is indicated by 00,01 and 02 respectively, then eNB can be by sending information 01 and 01100000 It will be notified with the DM-RS pattern of order 4 distribution DM-RS antenna port 1 and 2 to UE.

However, using 10 information to UE notify distributed DM-RS resource be it is relatively interminable, to reduce down The throughput of system of line link.

Another problem of the above method is the DM-RS antenna port information that UE cannot obtain other UE.That is, UE The DM-RS antenna port information of own can only be obtained.

In the wireless communication system for supporting MU-MIMO downlink transmission, such as lte-a system, if distributing to spy Determine in the identical time/frequency resource of UE to be known to the transmission of other UE, then can execute for the UE effective Receiving algorithm.For the receiver based on least mean-square error (MMSE) operation, which is determined for realizing optimum performance Interference strength.In addition, the receiver first determines whether there is interference in order to accurately measure interference strength.However, above-mentioned DM-RS resource notification does not provide to UE and interferes related any information.

Therefore, other than effective DM-RS resource notification, it is also necessary to provide whether other UE transmissions are causing to UE Interference is for information about.

In lte-a system, eNB up to 8 DM-RS antenna ports can will distribute to single UE.Each antenna port Allow to carry out channel estimation to one of multilayer of MIMO transmission of the eNB.The eNB controls information using transmission is designed to Physical downlink control channel (PDCCH) notifies the DM-RS antenna port of distribution to UE.Because when eNB carries out MIMO hair When sending, every layer requires DM-RS antenna port distribution, so it is closely related with the MIMO transmission scheme of eNB.That is, For the MIMO transmission for three layers, eNB sends control related with three DM-RS antenna ports to one or more UE Information.

Technical solution

The present invention is made based at least the above problems, and the present invention provides a kind of be used for UE transmission in LTE- In A system receive downlink traffic DM-RS resource information method, the information to the UE notify it is identical frequency/when Between resource allocation give other UE DM-RS resource.

According to an aspect of the present invention, a kind of control information interpretation method of terminal in mobile communication system is provided.It should Method includes: to receive the control information including transmission block message and DM-RS antenna port allocation indication information；Based on the transmission block The number of the transmission block of the terminal is distributed in information inspection；And the DM-RS antenna port point is explained according to the number of transmission block With instruction information.

According to another aspect of the present invention, a kind of control method for sending information of base station in mobile communication system is provided. This method comprises: checking the number for distributing to the transmission block of terminal；DM-RS antenna port distribution is selected according to the number of transmission block Indicate information；Generating includes the control information for transmitting block message and selected DM-RS antenna port allocation indication information；And The control information is sent to the terminal.

According to another aspect of the present invention, it provides a kind of in mobile communication system for explaining the control received from base station The terminal of information processed.The terminal includes: wireless communication unit, and receiving includes transmission block message and DM-RS antenna port distribution Indicate the control information of information；And controller, the number of the transmission block of the terminal is distributed to based on the transmission block message inspection Mesh, and the DM-RS antenna port allocation indication information is explained according to the number of transmission block.

According to another aspect of the present invention, it provides a kind of in mobile communication system for sending the base station of control information. The base station includes: controller, checks the number for distributing to the transmission block of terminal, is selected DM-RS days according to the number of transmission block Line port assignment indicates information, and generating includes transmission block message and selected DM-RS antenna port allocation indication information Control information.The base station further includes wireless communication unit, which is sent to the terminal.

Advantageous effects

DM-RS antenna port indicating means of the invention can will be used to receive downlink traffic in lte-a system The DM-RS resource allocation information of signal with about the DM-RS resource for distributing to other UE in identical frequency/time resource Information is collectively notified UE, to improve system performance.

Detailed description of the invention

From the detailed description carried out with reference to the accompanying drawing, above and other aspect, the feature of certain embodiments of the present invention It will be apparent from advantage, in the accompanying drawings:

Fig. 1 is the figure for the traditional DM-RS pattern that is illustrated as using in lte-a system and design；

Fig. 2 is the diagram control letter according to an embodiment of the invention carried used in the lte-a system on PDCCH The figure of breath；

Fig. 3 be diagram eNB according to an embodiment of the invention to UE notice distribute to the UE and it is identical frequency/when Between the flow chart of the method for the DM-RS antenna port of other UE that is scheduled in resource；

Fig. 4 is diagram UE according to an embodiment of the invention based on the DM-RS antenna port distribution index number sent by eNB To determine the side for the DM-RS antenna port for distributing to the UE and the other UE being scheduled in identical frequency/time resource The flow chart of method；

Fig. 5 be diagram it is according to an embodiment of the invention in order to by using two scrambler sequences using 3 or 4 transmission The figure of DM-RS pattern for distinguishing and designing between DM-RS antenna port in the MU-MIMO transmission of layer；

Fig. 6 is the diagram control letter according to an embodiment of the invention carried used in the lte-a system on PDCCH The figure of breath；

Fig. 7 a and Fig. 7 b be diagram eNB according to an embodiment of the invention to UE notice DM-RS antenna port distribution and with Interfere the flow chart of the method for relevant information；

Fig. 8 a and Fig. 8 b are diagram UE according to an embodiment of the invention based on the DM-RS antenna port sent by eNB point Determined with call number and SU/MU-MIMO indicator distribute to the UE and in identical frequency/time resource be scheduled The flow chart of the method for the DM-RS antenna port of other UE；

Fig. 9 is that diagram is according to an embodiment of the invention for distributing the flow chart of the method for DM-RS antenna port；

Figure 10 is the diagram information according to an embodiment of the invention for obtaining about the DM-RS antenna port distributed Method flow chart；

Figure 11 is the diagram control according to an embodiment of the invention carried used in the lte-a system on PDCCH The figure of information；

Figure 12 is the diagram new data indicator position (NDI) according to an embodiment of the invention for using transmission block to lead to The flow chart for whether using the process of application transport diversity known；

Figure 13 is the diagram position NDI according to an embodiment of the invention for using transmission block to notify that currently transmitted is just Originate return be retransmit and whether the flow chart of the process of application transport diversity；And

Figure 14 is the diagram position NDI according to an embodiment of the invention for using transmission block to notify whether application synchronizes The flow chart of the process of HARQ.

Specific embodiment

Below with reference to the accompanying drawings the various embodiments of detailed description of the present invention.Identical reference label is used in all the appended drawings Indicate same or similar part.Furthermore it is possible to the detailed description to the known function and structure that include herein be omitted, to keep away Exempt from so that subject of the present invention is unclear.

In lte-a system, there are two types of MIMO situations: (1) SU-MIMO situation, wherein eNB distributes to transport layer individually UE；And (2) MU-MIMO situation, wherein transport layer is distributed to more than two UE by eNB.In SU-MIMO situation, a UE 1,2,3,4,5,6,7 or 8 transport layer can be assigned.That is, eNB can be according to its judgement point in SU-MIMO situation With up to 8 DM-RS antenna ports.

However, MU-MIMO situation will be implemented under the limitation in view of implementing complexity.

1, MU-MIMO can support the transmission to up to 4 UE on identical frequency/time resource.

2, MU-MIMO can give up to 2 Layer assignments to single UE.

3, MU-MIMO can support up to 4 layers on identical frequency/time resource of transmission.That is, can be Each of four UE distribute one layer or distribute two layers for each of two UE, rather than are each in three UE Two layers of a distribution.

SU-MIMO and MU-MIMO can judge to change as unit by frequency bandwidth with subframe (1msec) according to eNB.? In lte-a system, 4 combination order (composite of MU-MIMO can be used for up to 4 layers of the limitation that eNB is sent Rank it) replaces.

Limitation relevant to the shared MIMO transmission of LTE-A and LTE system first is that: a biography can only be transmitted on one layer Defeated piece.Here, the transmission block as unit of the business information transmitted is transmitted to physical layer from the upper layer of LTE or lte-a system, To be encoded and to modulate.In LTE or lte-a system, identical frequency/time resource can be used in eNB will up to two Transmission block is sent to a UE.When sending a transmission block, the corresponding UE that sends the transmission block in single layer；So And two transmission blocks are sent using at least two layers.

In view of the restrictive condition of Distribution Layer in MU-MIMO and SU-MIMO and on two or more layers The fact that send two transmission blocks, an embodiment, proposes a kind of DM-RS antenna to for that will distribute to UE according to the present invention Port notifies the method that the control information to the UE minimizes.According to another embodiment of the present invention, it is also proposed that a kind of eNB will be closed In the signal that UE is received whether be a part notice of the dedicated MU-MIMO signal of the UE or SU-MIMO signal to the UE's Method.When the signal received is a part of MU-MIMO signal, the DM-RS antenna port of other UE is notified and distributed to Relevant information measures the UE and eliminates interference component.

An embodiment according to the present invention, using with the DM-RS antenna port used in LTE and lte-a system and The information of transmission block carries out DM-RS antenna port notice.As described above, two transmission blocks can be always at two or more Layer on send.In addition, a transmission block is always sent in single layer.When eNB sends business in LTE and lte-a system When channel, i.e. PDSCH, PDCCH is configured as carrying for being control of 1 or 2 notices to UE by the number about transmission block Information.An embodiment according to the present invention distributes information by using transmission block message and DM-RS antenna port, and use is least Control information notifies DM-RS antenna port to UE.

Fig. 2 is to show the control letter according to an embodiment of the invention being carried on used in the lte-a system on PDCCH The figure of breath.

With reference to Fig. 2, appended drawing reference 230 indicates that DM-RS antenna port instruction information (hereinafter can be with DM-RS resource Indicator is used interchangeably), it is a part for the control information transmitted on PDCCH.When receiving PDCCH, UE passes through ginseng The control information 220 of the control information 210 and transmission block 1 of examining transmission block 0 analyzes DM-RS antenna port instruction control information 230. The control information 210 of transmission block 0 includes the information whether sent about corresponding transmission block, if further including by sending The information of the size of the transmission block.The control information 220 of transmission block 1 includes the letter whether sent about corresponding transmission block Breath, if further including the size of the transmission block by sending.ENB can be by transmission block (i.e. transmission block 0 and biography to be sent Defeated piece one or both of 1) it notifies to UE.Also using used in the LTE system of previous generation by scheming in lte-a system The control information for the transmission block 0 and 1 that 2 appended drawing reference 210 and 220 indicates.An embodiment according to the present invention proposes that one kind passes through Information 210 and 220 and DM-RS resource indication information 230 are controlled using transmission block, and DM-RS antenna end is indicated with least digit The method of mouth.

Following table 1 shows the call number and description of instruction DM-RS antenna port distribution according to an embodiment of the invention The message of the meaning of the call number.

The DM-RS antenna port distribution of MIMO transmission is notified as follows:

1, it is transmitted for 1~8 layer of SU-MIMO

2, for up to 2 layers of MU-MIMO transmission for distributing to a UE

3, the MU-MIMO transmission of 4 UE of Xiang Duozhi

4, the MU-MIMO transmission for up to 4 layers (the greatest combined order of MU-MIMO is 4).

When eNB notifies the DM-RS antenna port distributed used in the MU-MIMO transmission to scheduled UE, The eNB is also provided about the DM-RS antenna port for distributing to the other UE that may be interfered to identical time/frequency resource Information.

An embodiment according to the present invention, as shown in table 1, eNB are indicated according to transmission block to be used using DM-RS resource Symbol determines different DM-RS Resource Allocation Formulas.

Therefore, the UE explained according to transmission block (that is, transmission block 0, transmission block 1 or transmission block 0 and 1) to be sent by The call number that eNB is sent.For example, the UE can control information according to transmission block if call number value 3 is sent UE by eNB 210 and 220 setting and the meaning for differently explaining the call number value.It is assumed that transmission block control information 210 and 220 is arranged to So that only sending transmission block 1, then the UE identifies that the DM-RS antenna port 3 in the DM-RS pattern 110 of the order 4 of Fig. 1 is assigned The UE is given, and DM-RS antenna port 0,1,2 is assigned to other UE, to be used for MU-MIMO transmission.That is, the UE can It is assigned to the information for the DM-RS antenna port that can potentially cause the other UE interfered to obtain and distributes to the UE itself DM-RS antenna port information, thus effectively mitigate interference.

Each transport block transmission is identified using 4 as shown in table 1 in order to distribute DM-RS antenna port based on table 1 Up to 10 call numbers.When using table 1,4 DM-RS antenna ends are carried in information field 230 shown in Fig. 2 Mouth distribution and information relevant to interference.

[table 1]

< table 1: using greatest combined order 4 (up to 4 UE dispatched jointly) for up to 8 layers of each UE of SU- MIMO transmission and in up to 2 layers of each UE of MU-MIMO transmission DM-RS antenna port distribute and interference notice >

DM-RS antenna port 0 indicates the first antenna port that the DM-RS in all reference signals (RS) is assigned to. That is, with the call number of any DM-RS antenna port n of ascending order layout since DM-RS antenna port 0.

More specifically, the RS used in LTE and lte-a system includes CRS, MBMS broadcast reference signal, DRS, determines Position reference signal (PRS) and DM-RS.

In the case, antenna port 0 to 3 is assigned to CRS, antenna port 4 be assigned to MBMS broadcast reference signal, Antenna port 5 is assigned to DRS, and antenna port 6 is assigned to PRS, and antenna port 7 to 14 is assigned to DM-RS.According to this hair A bright embodiment, DM-RS antenna port 0 correspond to antenna port 7, and DM-RS antenna port 1 corresponds to antenna port 8, and false The fixed principle is suitable for being described below.

Fig. 3 is to show eNB according to an embodiment of the invention to distribute to the UE and in identical frequency/time to UE notice The flow chart of the method for the DM-RS antenna port for the other UE being scheduled in resource.

With reference to Fig. 3, in the step 310, eNB is scheduled in specific time/frequency resource.In the dispatch deal In, eNB determines the time/frequency resource of UE and the message transmission rate of each UE.In the step 310 of Fig. 3, eNB will be total to Number with the UE of scheduling is set as N.N=1 indicates SU-MIMO transmission, and N=2,3 or 4 indicate MU-MIMO transmission.

In step 320, the call number of the DM-RS antenna port of j-th of UE is distributed in eNB setting instruction.J be for The variable distinguished between UE.ENB checks the number of the transmission block of j-th of UE in the UE dispatched jointly.The available biography of UE Defeated piece of number is 1 or 2.When sending a transmission block, transmission block 0 or transmission block 1 can be sent.

If it is judged that only send transmission block 0, then in step 340, the rope that eNB only has transmission block 0 to be activated from table 1 Selection is for notifying the port DM-RS being assigned to the call number of j-th of UE in quotation marks column.Wherein only have transmission block 0 to be opened Call number column, which show to be used to indicate when transmission block 0 is activated and transmission block 1 is disabled, distributes to j-th of UE and in phase The call number of the DM-RS antenna port for the other UE being scheduled in same time/frequency resource.

If it is judged that only send transmission block 1, then in step 350, the rope that eNB only has transmission block 1 to be activated from table 1 Selection is for notifying the port DM-RS being assigned to the call number of j-th of UE in quotation marks column.Wherein only have transmission block 1 to be opened Call number column, which show to be used to indicate when transmission block 1 is activated and transmission block 0 is disabled, distributes to j-th of UE and in phase The call number of the DM-RS antenna port for the other UE being scheduled in same time/frequency resource.

If it is judged that both transmission blocks 0 and 1 is all sent, then in step 360, two transmission blocks are all from table 1 by eNB Selection is for notifying the port DM-RS being assigned to the call number of j-th of UE in the call number column being activated.Two in table 1 The call number column that transmission block is all activated, which show to be used to indicate when transmission block 0 and 1 is all activated, distributes to j-th of UE and in phase The call number of the DM-RS antenna port for the other UE being scheduled in same time/frequency resource.

In step 370, eNB judges whether that respective DM-RS antenna end is assigned in all UE dispatched jointly Mouth distribution index number, that is, j=N.If j is equal to N, respective DM-RS antenna is assigned in all UE dispatched jointly Port assignment call number.If DM-RS antenna port distribution index number is assigned in all UE dispatched jointly, in step In rapid 390, DM-RS antenna port distribution index number is sent to the corresponding UE dispatched jointly on PDCCH by eNB.However, If there is also the UE for being not previously allocated DM-RS antenna port distribution index number, that is, j < N, then in step 380, eNB pass j Increase 1, and step 330 is repeated to next UE dispatched jointly.

Fig. 4 is to show UE according to an embodiment of the invention based on the DM-RS antenna port distribution index number sent by eNB Determine the method for the DM-RS antenna port for distributing to the UE and the other UE being scheduled in identical frequency/time resource Flow chart.

With reference to Fig. 4, in step 405, UE carries out PDCCH blind decoding.Blind decoding is carried out on PDCCH candidate, because UE does not know the time/frequency resource sent on it specific to the PDCCH of the UE in LTE and lte-a system, so that UE will be solved The PDCCH candidate of the not crc error of code is determined as carrying the PDCCH of the control information of own.

After carrying out the blind decoding, in step 410, UE judges whether to receive the downlink tune specific to the UE Spend PDCCH.If being not received by the downlink scheduling PDCCH specific to the UE, in step 405, which is repeated PDCCH blind decoding.However, in step 415, which checks when receiving specific to the downlink scheduling PDCCH of the UE Down link control information (DCI) in the PDCCH.The DCI includes control information about transmission block 0 and 1, DM-RS antenna Port assignment information and other control information.

At step 420, UE is based on transmission block 0 shown in Fig. 2 control information 210 and transmission block 1 controls information 220 and sentences Whether disconnected one or both of transmission block 0 and transmission block 1 are sent.

When only transmission block 0 is sent, in step 425, the call number that UE only has transmission block 0 to be activated in table 1 The call number indicated by the DM-RS antenna assignment control information 230 of Fig. 2 is searched in column, and by the way that disappearing for the call number is described in detail Breath checks the information about the DM-RS antenna port distributed.In addition, UE can check whether the transmission is related to multiple UE MU-MIMO transmission, and if it does, also check for which DM-RS antenna port is assigned to other UE.

When step 420 only has transmission block 1 to be sent, in step 430, UE only has transmission block 1 to be activated in table 1 Call number column in search by Fig. 2 the call number that indicates of DM-RS antenna assignment control information 230, and by the way that the rope is described in detail Information of the message inspection of quotation marks about the DM-RS antenna port distributed.In addition, UE can check whether the transmission is related to The MU-MIMO transmission of multiple UE, and if it does, also check for which DM-RS antenna port is assigned to other UE.

When both transmission block 0 and transmission block 1 are sent, in step 435, UE two transmission blocks in table 1 are all opened The call number that search is indicated by the DM-RS antenna assignment control information 230 of Fig. 2 in call number column.In addition, UE can be checked Whether the transmission is to be related to the MU-MIMO transmission of multiple UE, and if it does, which DM-RS antenna port quilt also checked for Distribute to other UE.

In step 440, UE receives the corresponding transmission block (i.e. transmission block 0 or transmission block 1) sent by eNB, and makes This transport layer channel is estimated with the single DM-RS antenna port distributed.

In step 445, UE is received by both eNB transmission blocks 0 and 1 sent, and uses the multiple DM-RS distributed Antenna port assesses the channel of multiple transport layers.

In step 450, UE judges whether other UE are adjusted at the same time/frequency resource jointly together with the UE Degree.That is, the signal that UE judgement is sent to the UE is received in SU-MIMO transmission or in MU-MIMO transmission 's.It can be based on the information about other UE and in step 425,430 and 435 together with DM-RS antenna port distribution information The examined DM-RS antenna port for distributing to other UE judge the signal be SU-MIMO transmission in or in MU-MIMO It is received in transmission.

When the signal specific to the UE be sent in MU-MIMO transmission when, in step 455, UE detection by point The signal that the DM-RS antenna port of the other UE of dispensing is sent, and use the information to improve the signal receiving performance of own. For example, UE can measure the signal strength for being sent to the DM-RS of other UE, and receive in MMSE in order to improve receptivity The measurement result is used in device.

When the signal specific to the UE is sent in SU-MIMO transmission, in step 460, UE is in no other UE Under the hypothesis dispatched jointly at the same time/frequency resource, the letter received is handled according to SU-MIMO reception scheme Number.

After receiving signal in one of step 455 and 460, UE returns to the PDCCH blind decoding in step 405.

Table 1 is used to support SU-MIMO and MU-MIMO transmission with the feature listed under<system features 1>above.So And in actual lte-a system, eNB can be carried out and the different types of SU-MIMO and MU-MIMO in<system features 1> Transmission.

An embodiment according to the present invention, table 2 below are used to support the feature with listing in following<system features 2> SU-MIMO and MU-MIMO transmission:

1, it is transmitted for 1~8 layer of SU-MIMO

2, for up to 2 layers of MU-MIMO transmission for distributing to a UE

3, the MU-MIMO transmission of Xiang Duozhi 2 UE

Under restrictive condition in system features 2, when up to 2 UE are dispatched jointly, compared with table 1, DM-RS antenna end Mouth distributes and reduces to number the case where interfering relevant information.Wherein only have transmission block 0 to be activated by comparing table 2 And wherein only have transmission block 1 to be activated call number column with the manipulative indexing number of table 1 column it can be observed that the number of situation It reduces.

When distributing DM-RS antenna port using table 2, each transmission block is identified using 4 information content and sends situation Up to 10 call numbers.That is, carrying 4 DM-RS antenna ends in the field 230 of Fig. 2 when using table 2 Mouth distribution and information relevant to interference.

[table 2]

< table 2: up to 8 layers of the SU- for each UE of greatest combined order 4 (up to 2 UE dispatched jointly) is utilized MIMO transmission and in up to 2 layers of each UE of MU-MIMO transmission DM-RS antenna port distribute and interference notice >

The method phase that eNB is determined the method for DM-RS antenna port distribution index number and described referring to table 1 and Fig. 3 using table 2 Together.In addition, method and the method phase referring to table 1 and Fig. 4 description that UE received and explained DM-RS antenna port distribution index number Together.Therefore, it will not provide the repeated description of the method using table 2.

Table 3 shows the call number of instruction DM-RS antenna port allocation model according to an embodiment of the invention and description should The message of the meaning of call number.Particularly, the DM-RS antenna end for the MIMO transmission that table 3 is used to notify to list in<system features 1> Mouth distribution.However, the method distinguished between DM-RS pattern is with each for sending the DM-RS antenna port of DM-RS In terms of DM-RS, table 3 is different from table 2.More particularly, based in table 3 described below scrambler sequence identification DM-RS pattern and The DM-RS of each DM-RS antenna port.

When the number of plies of MU-MINO transmission is 3 or 4, eNB is by the DM-RS of frequency division multiplexing (FDM) and code division multiplexing (CDM) It is mapped to each DM-RS antenna port shown in 4 DM-RS pattern 110 of order of Fig. 1.That is, with length in blue RE DM-RS antenna port 0 is sent for 2 Walsh (Walsh) code 0 (+1 ,+1), and the Walsh for being 2 with length in red R E 1 (+1, -1) of code sends DM-RS antenna port 3.The number of plies that table 3 corresponds to wherein MU-MIMO transmission is 3 or 4 and is disturbed with using The case where mode of code sequence distinguishes the DM-RS of each DM-RS antenna port.

Identify that the method for DM-RS antenna port is using two scrambling codes when another number of plies in MU-MIMO transmission is 3 or 4 Sequence.That is, when the number of plies of MU-MIMO transmission is 3 or 4, it is more to distribute using additional scrambler sequence at blue RE To 4 DM-RS antenna ports to add RE without distributing for MU-MIMO transmission, i.e., such as 4 DM-RS pattern 110 of order of Fig. 1 Shown in red R E.As a result, this method has the same effect, to use order 2DM-RS mode using two scrambler sequences And each scrambler sequence defines both DM-RS antenna port 0 and DM-RS antenna port 1.That is, for having 3 or 4 The MU-MIMO of a transport layer, can be by following mark DM-RS antenna port:

1, using the DM-RS antenna port 0 of the utilization scrambler sequence 0 (SC0) of walsh code 0

2, using the DM-RS antenna port 1 of the utilization scrambler sequence 0 (SC0) of walsh code 1

3, using the DM-RS antenna port 0 of the utilization scrambler sequence 1 (SC1) of walsh code 0

4, using the DM-RS antenna port 1 of the utilization scrambler sequence 1 (SC1) of walsh code 1

In the MU-MIMO transmission using 3 or 4 transport layers, each scrambler sequence defines DM-RS antenna port 0 and DM- RS antenna port 1 between DM-RS antenna port to distinguish.In addition, when these four situations are referred to as DM-RS days When line end mouth 0, DM-RS antenna port 1, DM-RS antenna port 2 and DM-RS antenna port 3, it is also contemplated that identical effect.

Fig. 5 is to show according to an embodiment of the invention be designed for using by using two scrambler sequences The figure of the DM-RS pattern distinguished between DM-RS antenna port in the MU-MIMO transmission of 3 or 4 transport layers.

With reference to Fig. 5, the DM-RS of 4 DM-RS antenna ports is sent on identical RE using two scrambler sequences.

Following table 3, which is shown, works as in the MU-MIMO transmission of combination order 3 or 4 using the DM-RS using two scrambler sequences When mode, the message of the meaning of call number and the description call number used in DM-RS antenna port information notice.In table 3 In, it is assumed that the scrambler sequence (SC) always 0 in SU-MIMO transmission.

The message of the meaning of call number and the description call number used in DM-RS antenna port information notice in table 3 Principle it is identical as the principle of table 1, only the MU-MIMO transmission of table 3 combine order be 3 and 4 when use additional scrambler sequence, And it is different from table 1, area is just only carried out between DM-RS antenna port using the mode of Fig. 1 110 in SU-MIMO transmission Point, wherein table 1 distinguishes DM-RS antenna port signal using the mode 110 of Fig. 1 when combining order and being 3 or 4, and is SU- with transmission MIMO or MIMO transmission are unrelated.

Wherein using table 1 shown in method and Fig. 3 of the eNB using the determining DM-RS antenna port distribution index number of table 3 Method is identical.In addition, wherein being used described in the method and Fig. 4 of UE reception and explanation DM-RS antenna port distribution index number The method of table 1 is identical.Therefore, it will not provide the repeated description to the same procedure for using table 3.

[table 3]

< table 3: using greatest combined order 4 (up to 4 UE dispatched jointly) for up to 8 layers of each UE of SU- MIMO transmission and in up to 2 layers of each UE of MU-MIMO transmission DM-RS antenna port distribute and interference notice >

Reference table 3 uses 2 DM-RS pattern pair of order using scrambler sequence for combining the MU-MIMO transmission of order 3 and 4 4 DM-RS antenna port signals are mutually distinguished.Another between 4 DM-RS antenna port signals for distinguishing Method be by length be 4 orthogonal code be applied to 2 DM-RS pattern of order.That is, being passed in the MU-MIMO of combination order 3 and 4 In defeated, the orthogonal code that length is 4 is assigned to the DM-RS antenna port in 2 DM-RS pattern of order.In this case, it is possible to make With the definition of table 1 and table 3.

For using the DM-RS antenna port of table 3 to distribute, each transport block transmission situation is identified using 4 information content Up to 10 call numbers.That is, carrying 4 DM-RS antenna ends in the field 230 of Fig. 2 when using table 3 Mouth distribution information and information relevant to interference.

Table 1,2 and 3 shows eNB and notifies SU-MIMO or MU-MIMO transmission together with DM-RS antenna port distribution information The case where to UE.An embodiment according to the present invention is provided a kind of eNB in lte-a system and effectively will using additional information Transmission mode (i.e. SU-MIMO or MU-MIMO) notice is to UE, while DM-RS antenna port distribution information and relevant to interference Information is notified respectively to the method for UE.

Fig. 6 is to show the control letter according to an embodiment of the invention carried used in the lte-a system on PDCCH The figure of breath.It is controlled in addition to controlling the similar transmission block 0 of information 220 with transmission block 0 shown in Fig. 2 control information 210 and transmission block 1 Information 610 processed and transmission block 1 control other than information 620, and the control information on PDCCH further includes in SU-MIMO and MU- 1 SU/MU-MIMO indicator 630 and DM-RS antenna port the distribution information 640 distinguished between MIMO transmission.

When using SU/MU-MIMO indicator 630, eNB sends to scheduled UE and is set for SU-MIMO transmission It is arranged to 1 SU/ for MU-MIMO transmission for 0 SU/MU-MIMO indicator 630 and sending to the UE that is dispatched jointly MU-MIMO indicator.If SU/MU-MIMO indicator 630 is arranged to 0 (being transmitted using SU-MIMO) and only distributes one A transport layer, then this means that transmission block 0 is sent.That is, being sent fixed for being transmitted using 1 layer of SU-MIMO Transmission block, to reduce the amount of the control information for DM-RS antenna port distribution.For the SU- using 2,3,4,5,6 or 7 layers MIMO transmission sends two transmission blocks, and transmission block 0 is fixed to be sent, and is distributed with reducing for DM-RS antenna port Control information amount.

In addition, two tables can be used according to the value of SU/MU-MIMO indicator 630, so that eNB transmission and UE receive DM-RS antenna port distribution and interference information.

Following table 4 shows the instruction DM-RS antenna port point in the SU-MIMO transmission using SU/MU-MIMO indicator The message of call number and the meaning for describing the call number with mode.Particularly, table 4 includes two column, represents transmission block 0 and is consolidated It is fixed to enable, and each column in this two column include two son column for representing call number and message.Compared with table 1,2 and 3, in table In 4, there is no transmission blocks 1 by transmission and the case where transmission block 0 is not sent.

Because table 4 is configured as showing and be used for for the DM-RS antenna port distribution information of SU-MIMO transmission without showing The DM-RS antenna port of MU-MIMO transmission distributes information, so not including information relevant to interference.

Table 5 shows the call number that DM-RS antenna port allocation model is used to indicate when using SU/MU-MIMO indicator With the message for the meaning for describing the call number.Particularly, table 5 includes information relevant to interference and DM-RS antenna port distribution Information.

Table 4 and table 5 allow for made of above-mentioned<system features 1>configuration.

[table 4]

< table 4: DM-RS antenna port distribution and interference notice (being directed to SU-MIMO) with SU/MU-MIMO indicator

[table 5]

When table 4 is used for DM-RS antenna port distribution, 4 information content are used, that is, 3 for identifying up to 7 Call number, 1 be used for SU/MU-MIMO indicator.That is, control information shown in Fig. 6 has when using table 5 The DM-RS antenna port of 1 SU/MU-MIMO indicator 630 and 3 is distributed and control information 640 relevant to interference.

Fig. 7 a and Fig. 7 b be show eNB according to an embodiment of the invention to UE notice DM-RS antenna port distribution and with Interfere the flow chart of the method for relevant information.UE can use DM-RS antenna port distribution and information relevant to interference Check the DM-RS antenna port for distributing to the other UE dispatched jointly in identical frequency/time resource.

With reference to Fig. 7 a and Fig. 7 b, in step 705, eNB executes scheduling in specific time/frequency resource.In the tune In degree processing, eNB determines the time/frequency resource of UE and the message transmission rate of each UE.In addition, eNB will be dispatched jointly The number of UE be set as N.

After dispatching UE, in step 720, the number of the scheduled UE of eNB judgement whether be 1 (i.e. whether N=1). If N=1, SU-MIMO is used；If N > 1, MU-MIMO is used.If N=1 (is transmitted using SU-MIMO), In step 715, eNB sets 0 for SU/MU-MIMO indicator.In step 720, eNB judgement will be sent out in SU-MIMO mode Whether the number of the transmission block sent is 2.If the number of transmission block is 1, in step 725, first situation of the eNB from table 4 Call number column in select DM-RS transmission mode call number.Otherwise, if the number of transmission block is 2, in step 730, ENB selects DM-RS transmission mode from the call number column of the second situation of table 4.In step 735, eNB is by DM-RS antenna end Mouth distribution index number and SU/MU-MIMO indicator are sent on PDCCH together with other control information.Because eNB has been determined SU-MIMO transmission, so SU/MU indicator is arranged to 0.

When N is greater than 1 in step 720 (, it is necessary to it is MU-MINO transmission), eNB indicates SU/MU in step 740 Symbol is set as 1.Because step 750 to 770 with the step 320 for the Fig. 3 being described above to 370 identical, will not provide To the duplicate detailed description of step 750 to 770.

Although step 750 to 770 with the step 320 of Fig. 3 to 370 identical, the step 780 of Fig. 7 is unique because The SU/MU-MIMO indicator being sent on the PDCCH of each UE is arranged to 1.In the step 390 of Fig. 3, SU/ is not used Therefore MU-MIMO indicator does not send the indicated value.

Fig. 8 a and Fig. 8 b are to show UE according to an embodiment of the invention based on the DM-RS antenna port sent by eNB point It is determined with call number and SU/MU-MIMO indicator and distributes to the UE and be scheduled in identical frequency/time resource other The flow chart of the method for the DM-RS antenna port of UE.

With reference to Fig. 8 a, in step 805, UE executes PDCCH blind decoding.As described above, blind decoding is executed to PDCCH, this Be because in LTE and lte-a system UE do not know the time/frequency resource sent on it specific to the PDCCH of the UE, from And the PDCCH candidate of decoded not crc error is determined as carrying the PDCCH of the control information of their own by UE.

After executing blind decoding, in step 810, UE judges whether to receive the downlink scheduling specific to the UE PDCCH.If being not received by the downlink scheduling PDCCH specific to the UE, in step 805, it is blind that UE repeats PDCCH Decoding.However, in step 815, UE checks the PDCCH if receiving the downlink scheduling PDCCH specific to the UE In DCI.As shown in Figure 6, which includes the control information of transmission block 0 and transmission block 1, SU/MU-MIMO indicator, DM- RS antenna port distribution control information and other control information.

In step 820, UE judges that the SU/MU-MIMO indicator of the control information carried on PDCCH is set to 0 is also set to 1.When SU/MU-MIMO indicator is arranged to 0, this indicates SU-MIMO transmission, and therefore in step UE judges that eNB is only to send transmission block 0 or send both transmission block 0 and transmission block 1 in 825.When only sending transmission block 0, In step 830, UE search in the call number column of the first SU-MIMO situation of table 4 is included in the DM-RS antenna port of Fig. 6 Call number in distribution control information field 640.The DM-RS antenna port distribution index number is used for channel estimation.

In step 835, UE carries out channel estimation to the layer for using DM-RS antenna port to send, and in step 840 In, UE handles the signal received using SU-MIMO method of reseptance.

When sending both transmission blocks 0 and 1 in step 825, in step 845, twoth SU-MIMO feelings of the UE in table 4 Search includes the call number in the DM-RS antenna port distribution control information field 640 of Fig. 6 in the call number column of condition.The DM- RS antenna port distribution index number is used for channel estimation.

In step 850, UE is to multiple layers of progress channel estimation for using DM-RS antenna port to send, then in step The signal received is handled in step 840 using SU-MIMO method of reseptance.

When SU/MU-MIMO indicator is arranged to 1 in step 820, this indicates MU-MIMO transmission, and therefore exists In step 855, UE judges that eNB is both to send transmission block 0, be transmission transmission block 1 or send transmission block 0 and 1.

When eNB only sends transmission block 0, in step 860, UE is in the call number column of the first MU-MIMO situation of table 5 Search includes the call number in the DM-RS antenna port distribution control information field 640 of Fig. 6.In step 865, UE is to logical It crosses the single layer that corresponding DM-RS antenna port is sent and carries out channel estimation.In step 870, UE is in the signal received Detect other DM-RS antenna port signals under the hypothesis of a part of MU-MIMO transmission, and by using detect its Its DM-RS antenna port signal improves signal receiving performance.

When eNB only sends transmission block 1 in step 855, in step 875, twoth MU-MIMO situation of the UE in table 5 Call number column in search include Fig. 6 DM-RS antenna port distribution control information field 640 in call number.Later, UE Carry out step 865 and 870.

When eNB sends both transmission blocks 0 and 1 in step 855, in step 880, threeth MU-MIMO of the UE in table 5 Search includes the call number in the DM-RS antenna port distribution control information field 640 of Fig. 6 in the call number column of situation.? In step 885, UE is to the multiple layers of progress channel estimation sent by corresponding DM-RS antenna port.Later, UE carries out step 870。

After completing the signal in step 840 or 870 and receiving, UE repeats the PDCCH blind decoding in step 805.

As described above, table 1,2,3,4 and 5 provide about transmission mode (that is, SU-MIMO transmission or MU-MIMO transmission) and Distribute to by eNB scheduling the other UE that may cause interference in MU-MIMO transmission DM-RS antenna port information and Distribute to the DM-RS antenna port information of the UE.Information about the DM-RS antenna port for distributing to other UE advantageously improves The receptivity of scheduled UE, and also add control information overhead efficiency.

One embodiment of the invention propose in view of transmission block 0 and/or transmission block 1 whether be sent to a UE without Consider the DM-RS antenna port distribution of information relevant to interference.In the case, information relevant to interference is not sent, from And reduce the amount of control information.

Following table 6 shows the index according to an embodiment of the invention for being used to indicate DM-RS antenna port allocation model Number and describe the call number the meaning message.Particularly, different from table 1,2,3,4 and 5, table 6 is designed to eNB to target UE only notifies the information about the DM-RS antenna port for distributing to the UE.When using table 6, even if in MU-MIMO transmission In, eNB does not also provide additional information relevant to interference to UE.

Also<system features 1>are considered under the hypothesis that 4 DM-RS pattern of order is used to combine order 3 or 4 to design table 6.

Because eNB is similar with the method described referring to Fig. 3 using the method for from table 6 to the DM-RS of UE notice distribution, This omits detailed description.Substantially, it the difference is that only that eNB is not being examined using the method for table 6 and the method with reference to Fig. 3 description DM-RS antenna port is notified to UE in the case where considering interference.

It is different from the table 1 of 10 DM-RS antenna port distribution index number is provided for each transmission mode, it is every in table 6 A transmission mode provides 9 DM-RS antenna port distribution index number.The reduction of call number number means to the information sent Amount there is no information relevant to interference because reduce.

[table 6]

< table 6: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (up to 4 UE dispatched jointly) is utilized MIMO transmission and for the DM-RS antenna port indicating means in up to 2 layers of each UE of MU-MIMO transmission >

Following table 7 shows the rope according to another embodiment of the present invention for being used to indicate DM-RS antenna port allocation model The message of the meaning of quotation marks and the description call number.Different from table 1,2,3,4 and 5, table 7 is designed to eNB and only notifies to close to UE In the information for the DM-RS antenna port for distributing to corresponding UE.Therefore, similar with table 6 when using table 7, even if in MU- In MIMO transmission, eNB does not also provide information relevant to interference to UE.

Also in view of < system spy under the hypothesis that 2 DM-RS pattern of order and two scrambler sequences are used to combine order 3 or 4 Sign 1 >.This is similar with table 3.

Because assigned DM-RS is notified the method to UE similar with the method described referring to Fig. 3 by eNB using table 7, institute To omit detailed description herein.Substantially, it the difference is that only eNB using the method for table 7 and referring to Fig. 3 method described DM-RS antenna port is notified to UE in the case where not considering from the interference of other UE.

It is different that the table 1 of 10 DM-RS antenna port distribution index number is provided for each transmission mode from wherein, in table 7, 8 DM-RS antenna port distribution index number are provided for each transmission mode.The reduction of call number number means to be sent The amount of information is reduced since there is no information relevant to interference.

In view of digit, (4 are wherein used in table 1) compared with using table 1, using 3 come to UE when using table 7 Notify DM-RS antenna port distribution information and information relevant to interference.

[table 7]

< table 7: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (up to 4 UE dispatched jointly) is utilized MIMO transmission and for the DM-RS antenna port indicating means in up to 2 layers of each UE of MU-MIMO transmission >

When using table 1 to 7, eNB notifies DM-RS antenna end in the initial transmission of mixed automatic repeat request (HARQ) Mouthful.

Relatively with HARQ processing, the case where other than the DM-RS antenna port distribution for needing notification list 1 to list into table 7 For retransmitting.

In initial send, when to send a transmission block, the transmission block is sent in single layer.However, again In transmission, when sending a transmission block, according to the decision of eNB, the transmission block can be retransmitted on multiple layers.In order to incite somebody to action DM-RS antenna port distribution notice is to UE for retransmitting, and an embodiment, utilizes table 1,2,3,4,5,6 and 7 according to the present invention In not using call number define additional distribution information.

Such as table 7, table 8 below is to be used to combine the hypothesis of order 3 and 4 in 2 DM-RS pattern of order and two scrambler sequences Under in view of<system features 1>and design.Particularly, different from table 1,2,3,4 and 5, table 8 is designed so that eNB only Only DM-RS antenna port is notified to UE.Therefore, when using table 8, even if eNB is not also provided to UE in MU-MIMO transmission Information relevant to interference.

Table 8 is different from being in place of table 7:

1, in table 8, even if can also freely distribute DM-RS antenna when one of transmission block 0 and 1 is sent to UE One in 4 combinations of port and scrambling code.That is, DM-RS antenna port can be distributed when sending a transmission block 0 and the combination of scrambler sequence 0, DM-RS antenna port 0 and the combination of scrambler sequence 1, DM-RS antenna port 1 and scrambler sequence 0 combine And one in DM-RS antenna port 1 and the combination of scrambler sequence 1.The call number column of first and second transmission modes of table 8 Call number 0,1,2 and 3 is these situations.

2, in table 8, the call number for the additional DM-RS antenna port distribution that can be applied to retransmit is defined.It Be table 8 the first and second transmission modes call number column call number 4,5,6 and 7.

[table 8]

< table 8: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (up to 4 UE dispatched jointly) is utilized MIMO transmission and for the DM-RS antenna port indicating means in up to 2 layers of each UE of MU-MIMO transmission >

Have the table 1 of 10 call numbers different from the call number of each transmission mode column, in table 8, two transmission modes Each of call number column have 8 call numbers.The call number column of each transmission mode have 8 call numbers in table 8, with The number for the transmission block to be sent is unrelated.Therefore, when using table 8,3 are distributed for DM-RS antenna port.Table 8 can be only The initial DM-RS antenna port distribution for sending and retransmitting only being used for 3 in HARQ processing, this is different from table 7, though Right table 7 also uses 3, but does not support to retransmit.

Only when sending a transmission block and the transmission block and being possibly retransmission, just can use with the first of table 8 and The call number 4,5,6 and 7 corresponding DM-RS antenna ports of the call number column of second transmission mode distribute information.In contrast, It is distributed with the call number 4,5,6 and 7 corresponding DM-RS antenna ports that the call number of the first and second transmission modes of table 8 arranges Information can be used for initially sending and retransmitting.

First and second transmission modes are mutually the same.Therefore, can be as shown in table 9 express table 8.

In table 9, the first and second transmission modes are unified for a transmission mode, but are to provide identical result.Separately Outside, the call number listed in table 9 provides as an example, and not necessarily use there is shown with all call numbers.For example, It can be omitted some call numbers according to implementation method.

[table 9]

< table 9: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (up to 4 UE dispatched jointly) is utilized MIMO transmission and for the DM-RS antenna port indicating means in up to 2 layers of each UE of MU-MIMO transmission >

As shown in table 9, when sending a transmission block, maximum order is 4, and when order is 1 or 2, scrambler sequence It (SC) is 0 or 1, when order is 3 or more, scrambler sequence (SC) is 0.Similarly, when sending two transmission blocks, maximum order is 8, And when order is 1 or 2, scrambler sequence is 0 or 1, and when order is 3 or more, scrambler sequence (SC) is 0.

In table 9, when sending a transmission block in initial send, DM-RS antenna port distribution is explained only for order 1 Indicate information.When sending a transmission block in retransmission, DM-RS antenna port distribution instruction letter is explained for all orders Breath.When sending two transmission blocks in initial transmission or retransmission, explain that DM-RS antenna port distribution refers to for all orders Show information.

Fig. 9 is the flow chart for showing the method according to an embodiment of the invention that DM-RS antenna port is distributed using table 8. Substantially, eNB checks the number for distributing to the transmission block of UE, selects DM-RS antenna port distribution to refer to according to the number of transmission block Show information, generation includes the control about number of transport blocks purpose information and selected DM-RS antenna port allocation indication information Information, and generated control information is sent to the UE.

More specifically, referring to Fig. 9, in step 900, eNB executes scheduling in subframe.In step 910, eNB sentences Disconnected is to send scheduled UE for one or two transmission blocks.According to the number of transmission block, different indexes is selected from table 8 Number.If eNB judges to send two transmission blocks, the call number of eNB third transmission mode from table 8 is arranged in step s 950 Select the appropriate call number of DM-RS antenna port distribution information.When sending two transmission blocks, mould is transmitted from the third in table 8 The call number of the call number column selection DM-RS antenna port distribution information of formula, without considering that the transmission is initial sends or again It is new to send.

When sending a transmission block, eNB can be the initial transmission of the transmission block or again send out according to currently transmitted It send and selects different call numbers from table 8.Therefore, when eNB judges to send a transmission block in step 910, in step 920 In, eNB judges that the transmission is the initial transmission or retransmission of the transmission block.

When it is currently transmitted be initially to send when, in step 940, eNB from the call number of first or second transmission mode arrange Call number of the middle selection other than call number 4,5,6 and 7.However, when it is currently transmitted be retransmit when, in step 930, ENB any one of selection from the call number of first or second transmission mode column.

Figure 10 be show it is according to an embodiment of the invention using table 8 obtain about the DM-RS antenna port distributed The flow chart of the method for information.Substantially, it includes the control for transmitting block message and DM-RS antenna port allocation indication information that UE, which is received, Information processed is distributed to the number of the transmission block of the UE based on the transmission block message inspection, and is explained according to the number of transmission block The DM-RS antenna port allocation indication information.

More specifically, referring to Fig.1 0, in step 1000, UE carries out PDCCH blind decoding to the signal received.In step In rapid 1010, UE judges whether to receive the downlink scheduling PDCCH of own.When receiving the downlink scheduling When PDCCH, UE checks the DCI being carried on the PDCCH in step 1020.In step 1030, UE judges the biography sent Defeated piece of number is 1 or 2.When the number of transmission block is 1, in step 1040, UE judges that the transmission is initial sends also It is to retransmit.When the transmission is the retransmission of the transmission block, in step 1050, UE based on table 8 first and second The call number of the call number column of transmission mode and DM-RS antenna port corresponding with call number distribution information inspection are distributed to The DM-RS antenna port of the UE itself.However, when the transmission is the initial transmission of the transmission block, in step 1060, UE base Call number other than call number 4,5,6 and 7 in the call number column of the first and second transmission modes of table 8 and with this The DM-RS antenna port of the UE itself is distributed in the corresponding DM-RS antenna port distribution information inspection of call number.

When the number of transmission block is 2, in process 1070, UE is based on the call number column of third transmission mode in table 8 The DM-RS antenna port of the UE itself is distributed in call number and DM-RS antenna assignment information inspection corresponding with the call number. When sending two transmission blocks, it can be determined that distribute to the DM-RS antenna port of the UE without considering that the transmission is initially to send Or it retransmits.

How to judge to send in the method for Fig. 9 and Figure 10 be the initial example for sending or retransmitting be with reference to by The position NDI for the control information that eNB is sent, because being inverted for new initial transmission NDI.That is, if in (n+ 1) new initial transmission is sent at a transmission, then sends the NDI bit reversal for being arranged to 0 at n-th to be arranged to 1.Otherwise, If the transmission is to retransmit, NDI values are remained unchanged.

Each of table 8 and table 9 can be used for the DM-RS antenna port distribution letter in initial transmission and retransmission Breath notice is to UE.Another method for expressing table 8 and table 9 is that each table is decomposed into the table for being used to initially send and is used for The table of retransmission.For example, table 9 may be logically divided into the table 10 and table 11 for being respectively used to initially send and retransmit.

[table 10]

< table 10: the SU- for being directed to up to 8 layers of each UE of greatest combined order 3 (up to 4 UE dispatched jointly) is utilized MIMO transmission and for the DM-RS antenna port indicating means in up to 2 layers of each UE of MU-MIMO transmission (for just originating Send) >

[table 11]

< table 11: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (up to 4 UE dispatched jointly) is utilized MIMO transmission and for the DM-RS antenna port indicating means in up to 2 layers of each UE of MU-MIMO transmission (for sending out again Send) >

Table 8,9,10 and 11 is under the hypothesis that 2 DM-RS pattern of order and two scrambler sequences be used to combine order 3 or 4 It is designed in view of<system information 1>.4 DM-RS pattern of order using it is identical<system information 1>feature and combination order 3 or 4 and used, can provide as shown in Table 12 for notify DM-RS antenna port information call number and describe the call number Message.

[table 12]

< table 12: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (up to 4 UE dispatched jointly) is utilized MIMO transmission and for the DM-RS antenna port indicating means in up to 2 layers of each UE of MU-MIMO transmission >

In table 12, the call number 6,7,8 and 9 of the call numbers of the first and second transmission modes column and opposite with the call number The DM-RS antenna port assignment messages answered are only applied to retransmit.For initially sending, the first and second transmission modes are utilized Call number column in call number other than call number 6,7,8 and 9 and message informing DM-RS days corresponding with the call number Line port assignment.

Table 12 can be expressed as the table for having there are two transmission mode as table 9, and can also be as table 10 and table 11 It is divided into the two sseparated tables for being respectively used to initially send and retransmit like that.

Table 12 can be used for the eNB as shown in Fig. 8 a, Fig. 8 b, Fig. 9 and Figure 10 and determine DM-RS antenna end to be sent Mouth distribution information and UE explain the DM-RS distribution information received.

Table 13 shows the call number according to an embodiment of the invention for UE notice DM-RS antenna port information and retouches State the message of the meaning of the call number.Different from table 1,2,3,4,5,6 and 7, table 13 is designed so that when sending a transmission When block, eNB notifies DM-RS antenna port distribution information and information relevant to interference.Table 13 can be used for notifying MIMO transmission DM-RS antenna port distribution.

1, it is transmitted for 1 layer of SU-MIMO

2, for one layer of MU-MIMO transmission for distributing to a UE

3, for the MU-MIMO transmission for arriving up to 4 UE

4, the MU-MIMO transmission (the greatest combined order 4 of MU-MIMO) for up to 4 layers.

[table 13]

< table 13: using greatest combined order 4 in SU the and MU-MIMO mode for sending a transmission block to each UE DM-RS antenna port and interference indicating means >

Have the table 1 of 10 call numbers different from each call number column, in table 13, each call number column have 6 ropes Quotation marks.The call number number in each call number column is reduced by the way that the number of the transmission block of each UE is limited to 1.In digit Aspect, it is different from 4 tables 1 are used, table 13 allow eNB only use 3 to UE notify DM-RS antenna port distribute and with interference Relevant information.

Following table 14 shows the index according to an embodiment of the invention for UE notice DM-RS antenna port information Number and describe the call number the meaning message.Different from table 1,2,3,4,5,6 and 7, table 14 is designed so that when sending one When a transmission block, eNB notifies DM-RS antenna port distribution information and information relevant to interference.Table 14 is for notifying MIMO to pass Defeated DM-RS antenna port distribution, such as<system features 3>.In addition, table 14 is in 2 DM-RS pattern of order and two scrambler sequences For what is designed under combining the hypothesis of order 3 or 4.This is similar with table 3.

Have the table 1 of 10 call numbers different from each call number column, in table 14, call number in each call number column Number is 6.The number of call number in each call number column is reduced by the way that the number of the transmission block of each UE is limited to 1. It is different from 4 tables 1 are used in terms of digit, table 14 allow eBN only utilize 3 to UE notify DM-RS antenna port distribute and Information relevant to interference.

[table 14]

< table 14: using greatest combined order 4 in SU the and MU-MIMO mode for sending a transmission block to each UE DM-RS antenna port and interference indicating means >

In above-mentioned DM-RS antenna port distribution method, it has been mentioned that special DM-RS antenna port.For example, when with table When 7 transmission transmission block 0 and 1, call number 5 indicates the distribution of the DM-RS antenna port 0,1,2,3,4 and 5 using scrambling code 0.However, Present invention can apply to the DM-RS antenna port combinations other than DM-RS antenna port described above combination.According to this hair A bright embodiment, when sending transmission block 0 and 1 simultaneously in table 7, call number 5 can be identically applied to wherein use Scrambling code 0 and the case where distribute DM-RS antenna port 0,1,2,5,6 and 7 rather than DM-RS antenna port 0,1,2,3,4 and 5.

Figure 11 is to show the control according to an embodiment of the invention carried used in the lte-a system on PDCCH The figure of information.

It is carried on other than the control information of each transmission block is divided into NDI and other control information with reference to Figure 11 Control information on PDCCH with it is shown in Fig. 2 identical.Field 1110 and 1120 carries the control information about transmission block 0, word Control information of 1130 and 1140 carrying of section about transmission block 1.More specifically, the carrying of NDI field 1120 and 1140 indicates to pass Defeated piece 0 and 1 whether be HARQ processing in the control information initially sent.When transmission block 0 is not sent, NDI 0 available In other purposes, rather than initial transmission or retransmission for notifying HARQ.

Table 15 shows the position the NDI instruction DM-RS according to an embodiment of the invention for using the transmission block not sent The call number of antenna port distribution and transmission mode.

[table 15]

< table 15: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (most 4 UE dispatched jointly) is utilized MIMO transmission and in up to 2 layers of each UE of MU-MIMO transmission DM-RS antenna port and transmission diversity indicating means >

In table 15, NDIx is the position NDI for the transmission block not sent, and can be used for notifying to transmit at one to UE Transmission mode in block.In table 1 to 14, only transmission mode (i.e. SU-MIMO or MU-MIMO) can be notified to UE.In table In 15, when only sending a transmission block, it can be notified by using the position NDI for the transmission block not sent to UE further Information, such as whether using transmission diversity.It can use transmission diversity when using CRS, and according to the number of CRS antenna port Mesh can only use the selectively transmission point of space-frequency block codes (Space Frequency Block Code, SFBC) or frequency of use Collect both (FSTD) and SFBC.That is, automatically configuring transmission point using SFBC when sending the CRS of two antenna ports Collection automatically configures transmission diversity using FSTC+SFBC when sending the CRS of four antenna ports.On the contrary, if sending single When the CRS of antenna port, transmission diversity cannot be utilized, and therefore automatically configure the single port of transmission.

Table 15 is directed to using SFBC or is designed using the case where both FSTD and SFBC.It, can in lte-a system To use transmission diversity based on DM-RS and based on the transmission diversity of CRS.When using DM-RS, transmission can be implemented as follows Diversity:

1, the SFBC of DM-RS antenna port 0 and 1 is utilized；With

2, the FSTD+SFBC of DM-RS antenna port 0,1,2 and 3 is utilized.

Table 16 shows the position the NDI instruction port DM-RS according to an embodiment of the invention using the transmission block not sent With the message of the call number of transmission mode and the meaning for describing the call number.

[table 16]

< table 16: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (4 UE dispatched jointly of maximum) is utilized MIMO transmission and in up to 2 layers of each UE of MU-MIMO transmission DM-RS antenna port and transmission diversity indicating means >

When using table 16, it can be notified to UE about whether utilization by using the position NDI for the transmission block not sent Transmission diversity sends the transmission block and the information using which transmission diversity scheme.

Specifically, table 15 is designed to the transmission diversity scheme that notice utilizes CRS, and table 16 is designed to notice and utilizes DM- The transmission diversity of RS.According to another embodiment of the present invention, the transmission diversity based on CRS and the transmission diversity based on DM-RS two Person is supported.In order to support both the transmission diversity based on CRS and transmission diversity based on DM-RS.Table 15 and table 16 are repaired It is changed to a table.

Table 17 shows the position the NDI instruction port DM-RS according to an embodiment of the invention using the transmission block not sent With the call number of transmission mode.

When using table 17, whether eNB is again about sending to UE notice using the position NDI for the transmission block not sent Send and whether application transport diversity and DM-RS antenna port distribution information.When only one transmission block is sent, such as The position NDI for the transmission block that fruit is not sent is arranged to 0, then the NDI can be used for UE notification transmission diversity use or The retransmission of transmission block.When using table 17, if the NDIx for the transmission block not sent be arranged to 0 and call number be 0, then transmission diversity is notified to UE.The transmission diversity can be applied to HARQ and initially send and retransmit the two.For letter Change system design, design can be configured so that transmission diversity can be applied to HARQ initial methods or retransmission in one. When the transmission diversity, which is applied only to HARQ, to be retransmitted, NDIx becomes for judging whether send is that HARQ is retransmitted Value.

[table 17]

< table 17: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (4 UE dispatched jointly of maximum) is utilized MIMO transmission and in up to 2 layers of each UE of MU-MIMO transmission DM-RS antenna port and transmission diversity indicating means >

Using table 15,16 and 17, it can use NDI for one of SU-MIMO, MU-MIMO and transmission diversity and the end DM-RS Mouth distribution information is collectively notified UE.An embodiment according to the present invention, another purposes of the position NDI for the transmission block not sent It is for notifying synchronous HARQ.

Table 18, which is shown, indicates what DM-RS port assignment and synchronous HARQ were transmitted using the position NDI for the transmission block not sent Call number and describe the call number the meaning message.

[table 18]

< table 18: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (4 UE dispatched jointly of maximum) is utilized MIMO transmission and in up to 2 layers of each UE of MU-MIMO transmission DM-RS antenna port and synchronous HARQ indicating means >

It, can will be about transmission block whether in synchronous HARQ by using the NDI for the transmission block not sent using table 18 The information of middle transmission is notified to UE.Because synchronous HARQ retransmission periodically occurs, do not need for retransmission Send additional PDCCH.However, synchronous HARQ has a disadvantage that it is not adapted to the wireless channel changed over time dynamically.Pass through Design table 18, can be sharp when wireless channel environment becomes appropriate for synchronous HARQ to support the synchronous HARQ of single codeword transmission Notice is executed with table 17, this causes performance to optimize.

Table 19 shows the position the NDI instruction port DM-RS according to an embodiment of the invention using the transmission block not sent With synchronous HARQ transmission call number and describe the call number the meaning message.

[table 19]

< table 19: the SU- for being directed to up to 8 layers of each UE of greatest combined order 4 (4 UE dispatched jointly of maximum) is utilized MIMO transmission and in up to 2 layers of each UE of MU-MIMO transmission DM-RS antenna port and synchronous HARQ indicating means >

Using table 19, synchronous HARQ can be sent by using the NDI for the transmission block not sent and whether application passes Transmission diversity is notified to UE.In table 19, when the position the NDI for the transmission block not sent is arranged to 0, call number value can be used for Synchronous SU/MU-MIMO or transmission diversity are notified to UE.Table 19 is designed so that the synchronous HARQ in SU/MU-MIMO is available It is sent in initial.This allows for the finite population of call number and selects the result of most effective transmission mode.

Figure 12 is to show the transmission block according to an embodiment of the invention that do not sent by using in table 15 and table 16 The position NDI by whether application transport diversity is notified to the flow chart of the process of UE.

With reference to Figure 12, in step 1200, UE receives PDCCH and checks the DCI being carried on PDCCH.In step In 1210, UE judges that the number of the transmission block sent is 1 or 2.When 2 transmission blocks are sent, in step 1250, UE Based on the determining DM- for distributing to own of DM-RS antenna port instruction information 1150 (see Figure 11) of the control information on PDCCH RS antenna port.Otherwise, when 1 transmission block is sent, in step 1220, the NDI for the transmission block that UE judgement is not sent It is arranged to 0 and is also set to 1.

If the NDI for the transmission block not sent is arranged to 0, in step 1230, UE is judged as application transport point Collection.Otherwise, if the NDI for the transmission block not sent is arranged to 1, in step 1240, UE, which is judged as, executes SU-MIMO Or MU-MIMO transmission.Determine that notice is to the details of UE in Figure 12 by reference to table 15 and table 16.

Figure 13 is to show the position NDI according to an embodiment of the invention by using the transmission block not sent in table 17 By it is currently transmitted be initial to send or retransmit and whether application transport diversity is notified to the flow chart of the process of UE.

With reference to Figure 13, in step 1300, UE checks the DCI being carried on PDCCH.In step 1310, UE judges quilt The number of the transmission block of transmission is 1 or 2.When 2 transmission blocks are sent, in step 1350, UE is based on the control on PDCCH DM-RS antenna port instruction information 1150 (see Figure 11) of information processed determines the DM-RS antenna port for distributing to own.It is no Then, when 1 transmission block is sent in step 1310, in step 1320, the NDI quilt for the transmission block that UE judgement is not sent It is set as 0 and is also set to 1.

If the NDI for the transmission block not sent is arranged to 0, in step 1330, UE, which judges, currently transmitted is It retransmits.Otherwise, if the NDI for the transmission block not sent is arranged to 1, in step 1340, UE is judged as current Transmission is initially to send.In addition, if being judged as that the position NDI for the transmission block that a transmission block is sent and do not sent is set It is set to 0, then UE is based on DM-RS antenna port and indicates that information 1150 judges whether application transport diversity.It is determined by reference to table 17 It notifies in Figure 13 to the details of UE.

Figure 14 is according to an embodiment of the invention It is no to notify using synchronous HARQ to the flow chart of the process of UE.

With reference to Figure 14, in step 1400, UE checks the DCI being carried on PDCCH.In step 1410, UE judges quilt The number of the transmission block of transmission is 1 or 2.When 2 transmission blocks are sent, in step 1450, UE is based on the control on PDCCH DM-RS antenna port instruction information 1150 (see Figure 11) of information processed determines the DM-RS antenna port for distributing to the UE oneself.It is no Then, when 1 transmission block is sent, in step 1420, the NDI for the transmission block that UE judgement is not sent is arranged to 0 still It is arranged to 1.

If the NDI for the transmission block not sent is arranged to 0, in step 1430, UE is judged as using synchronization HARQ.Otherwise, if the NDI for the transmission block not sent is arranged to 1, in step 1440, UE is judged as using asynchronous HARQ.Determine that notice is to the details of UE in Figure 14 by reference to table 18.

Above-mentioned synchronous HARQ transmission notice method is directed to downlink transmission, i.e., from eNB to UE.However, the synchronous HARQ Transmission notice method can also be applied to uplink generation, i.e., from UE to eNB.

As described above, DM-RS antenna port indicating means of the invention can will effectively be used to connect in lte-a system Accept the DM-RS resource allocation information of downlink traffic signal with about distributing to other UE in identical frequency/time resource The information of DM-RS resource be collectively notified UE, to improve system performance.

Although it is not shown in the drawings, still method according to the above embodiment of the present invention can be by including that wireless communication is single Member, that is, the UE or eNB of transmitter and receiver and controller is executed.

For example, it includes the control for transmitting block message and DM-RS antenna port allocation indication information that UE, which may include for receiving, The number of the wireless communication unit of information processed and the transmission block for distributing to the terminal using the transmission block message inspection and The controller of the DM-RS antenna port allocation indication information is explained according to the number of transmission block.

In addition, eNB may include for checking the number for the transmission block for distributing to UE, being selected according to the number of the transmission block It includes transmission block message and selected DM-RS antenna port allocation indication information that DM-RS antenna port, which is distributed information and generated, Controller and for generated control information to be sent to the wireless communication unit of the UE.

Although the particular embodiment of the present invention is described in detail above, it is to be clearly understood that field The many variations and/or modification for the basic inventive concept obviously instructed herein for technical staff will also be dropped into institute Within the spirit and scope of the present invention limited in attached claim and its equivalent.

Claims

1. a kind of control message receiving method of terminal in mobile communication system, comprising:

Control information including antenna port relevant information is received by the terminal；

It is to enable code word 0 and disable code word 1, or enable both code word 0 and code word 1 based on control information identification；

At least one antenna port of the terminal is distributed to based on antenna port relevant information identification according to recognition result Number and at least one layer number；And

At least one antenna port distributed is utilized to receive data associated with described at least one layer,

Wherein, the antenna port relevant information can indicate up to eight antenna ports and eight layers.

2. according to the method described in claim 1, wherein, if enabling code word 0 and disabling code word 1, the antenna port Relevant information is configured to indicate that up to four antenna ports for four layers,

It wherein, include scrambler sequence 0 or 1 and first antenna port or the second antenna end for the reference signal (RS) of a layer One in the combination of mouth,

Wherein, the RS for two layers includes first antenna port and the second antenna port,

Wherein, the RS for three layers includes first antenna port, the second antenna port and third antenna port, and

Wherein, the RS for four layers includes first antenna port, the second antenna port, third antenna port and the 4th antenna end Mouthful.

3. according to the method described in claim 1, wherein, if enabling both code word 0 and code word 1, the antenna port phase It closes information and is configured to indicate that up to eight antenna ports for eight layers,

It wherein, include first antenna port and the second antenna port for the reference signal (RS) of two layers,

Wherein, the RS for three layers includes first antenna port, the second antenna port and third antenna port,

Wherein, the RS for four layers includes first antenna port, the second antenna port, third antenna port and the 4th antenna end Mouthful,

Wherein, the RS for five layers includes first antenna port, the second antenna port, third antenna port, the 4th antenna end Mouth and the 5th antenna port,

Wherein, the RS for six layers includes first antenna port, the second antenna port, third antenna port, the 4th antenna end Mouth, the 5th antenna port and the 6th antenna port,

Wherein, the RS for seven layers includes first antenna port, the second antenna port, third antenna port, the 4th antenna end Mouth, the 5th antenna port, the 6th antenna port and the 7th antenna port, and

Wherein, the RS for eight layers includes first antenna port, the second antenna port, third antenna port, the 4th antenna end Mouth, the 5th antenna port, the 6th antenna port, the 7th antenna port and the 8th antenna port.

4. according to the method described in claim 1, wherein, if code word 0 is activated and code word 1 is disabled, the antenna Relevant information instruction in port is arranged to 4 maximum order, and scrambler sequence 0 or 1 for order 1 and scrambler sequence 0 for order 3 or Order 4.

5. according to the method described in claim 1, wherein, if both code word 0 and code word 1 are activated, the antenna port Relevant information instruction is arranged to 8 maximum order, and scrambler sequence 0 or 1 is used for order 3 for order 2 and scrambler sequence 0.

6. according to the method described in claim 1, wherein,

If code word 0 is activated and code word 1 is disabled, the antenna port relevant information includes at least one in following It is a:

Indicate the index that the DM-RS antenna port 0 of scrambler sequence 0 is utilized in order mode 2,

Indicate the index that the DM-RS antenna port 1 of scrambler sequence 0 is utilized in order mode 2,

Indicate the index that the DM-RS antenna port 0 of scrambler sequence 1 is utilized in order mode 2,

Indicate the index that the DM-RS antenna port 1 of scrambler sequence 1 is utilized in order mode 2,

Indicate the index that the DM-RS antenna port 0 and 1 of scrambler sequence 0 is utilized in order mode 2,

It indicates using the index of the DM-RS antenna port 0,1 and 2 of scrambler sequence 0 in order mode 4, and

It indicates using the index of the DM-RS antenna port 0,1,2 and 3 of scrambler sequence 0 in order mode 4, and

If both code word 0 and code word 1 are activated, the antenna port relevant information includes at least one of following:

Indicate the index that the DM-RS antenna port 0,1 and 2 of scrambler sequence 0 is utilized in order mode 4,

Indicate the index that the DM-RS antenna port 0 and 1 of scrambler sequence 1 is utilized in order mode 2,

Indicate the index that the DM-RS antenna port 0,1,2 and 3 of scrambler sequence 0 is utilized in order mode 4,

Indicate the index that the DM-RS antenna port 0,1,2,3 and 4 of scrambler sequence 0 is utilized in order mode 8,

Indicate the index that the DM-RS antenna port 0,1,2,3,4 and 5 of scrambler sequence 0 is utilized in order mode 8,

It indicates using the index of the DM-RS antenna port 0,1,2,3,4,5 and 6 of scrambler sequence 0 in order mode 8, and

Indicate the index that the DM-RS antenna port 0,1,2,3,4,5,6 and 7 of scrambler sequence 0 is utilized in order mode 8,

Wherein, the DM-RS antenna port 0 is the first antenna port of DM-RS, and any DM-RS antenna port n according to from The ascending order that DM-RS antenna port 0 starts is come the number of indexing.

7. a kind of control method for sending information of base station in mobile communication system, comprising:

Determine it is to enable code word 0 and disable code word 1, or enable both code word 0 and code word 1 by the base station；

Day is identified according to definitive result, the number of at least one layer and for the number of at least one antenna port of terminal distribution Line end mouth relevant information；

Generate the control information including antenna port relevant information；

The control information is sent to the terminal；And

At least one antenna port distributed is utilized to send data associated with described at least one layer,

Wherein, the control information instruction is starting code word 0 and disables code word 1 or enable both code word 0 and code word 1, with And

8. according to the method described in claim 7, wherein, if enabling code word 0 and disabling code word 1, the antenna port Relevant information is configured to indicate that up to four antenna ports for four layers,

It wherein, include scrambler sequence 0 or 1 and first antenna port or the second antenna end for the reference signal (RS) of a layer One of the combination of mouth,

9. according to the method described in claim 7, wherein, if enabling both code word 0 and code word 1, the antenna port phase It closes information and is configured to indicate that up to eight antenna ports for eight layers,

10. according to the method described in claim 7, wherein, if enabling code word 0 and disabling code word 1, the antenna port Relevant information instruction is arranged to 4 maximum order, and scrambler sequence 0 or 1 is used for order 3 or order 4 for order 1 and scrambler sequence 0.

11. according to the method described in claim 7, wherein, if both code word 0 and code word 1 are activated, the antenna port Relevant information instruction is arranged to 8 maximum order, and scrambler sequence 0 or 1 is used for order 3 for order 2 and scrambler sequence 0.

12. according to the method described in claim 7, wherein, the antenna port relevant information:

If enabling code word 0 and disabling code word 1, including the DM-RS antenna for indicating to utilize scrambler sequence 0 in order mode 2 The index of port 0, instruction utilize the index of the DM-RS antenna port 1 of scrambler sequence 0, instruction in order mode 2 in order mode 2 The index of the middle DM-RS antenna port 0 using scrambler sequence 1, instruction utilize the DM-RS antenna of scrambler sequence 1 in order mode 2 The index of port 1, instruction utilize the index of the DM-RS antenna port 0 and 1 of scrambler sequence 0, instruction in order mould in order mode 2 Scrambler sequence 0 is utilized in order mode 4 using the index of the DM-RS antenna port 0,1 and 2 of scrambler sequence 0 and instruction in formula 4 DM-RS antenna port 0,1,2 and 3 at least one of index,

If enabling both code word 0 and code word 1, including the DM-RS antenna end for indicating to utilize scrambler sequence 0 in order mode 2 The index of mouth 0 and 1, instruction utilize the index of the DM-RS antenna port 0,1 and 2 of scrambler sequence 0, instruction in order in order mode 4 Scrambler sequence 0 is utilized in order mode 4 using the index of the DM-RS antenna port 0 and 1 of scrambler sequence 1, instruction in mode 2 The index of DM-RS antenna port 0,1,2 and 3, instruction in order mode 8 using the DM-RS antenna port of scrambler sequence 00,1,2, 3 and 4 index indicates to utilize the index of the DM-RS antenna port 0,1,2,3,4 and 5 of scrambler sequence 0, instruction in order mode 8 In order mode 8 using the index of the DM-RS antenna port 0,1,2,3,4,5 and 6 of scrambler sequence 0 and instruction in order mode 8 Using at least one of the index of the DM-RS antenna port 0,1,2,3,4,5,6 and 7 of scrambler sequence 0,

13. a kind of terminal for being received in mobile communication system from the received control information in base station, comprising:

Wireless communication unit includes the control information of antenna port relevant information and utilizes distributed at least one for receiving A antenna port receives and at least one layer of associated data；With

Controller, for being to enable code word 0 and disable code word 1, or enable code word 0 and code word 1 based on control information identification The two, and for according to recognition result based on the antenna port relevant information identification distribute to the terminal at least one The number of antenna port and the number of at least one layer,

14. terminal according to claim 13, wherein if enabling code word 0 and disabling code word 1, the antenna end Mouth relevant information is configured to indicate that up to four antenna ports for four layers,

15. terminal according to claim 13, wherein if enabling both code word 0 and code word 1, the antenna port Relevant information is configured to indicate that up to eight antenna ports for eight layers,

16. terminal according to claim 13, wherein if enabling code word 0 and disabling code word 1, the antenna end Mouth relevant information instruction is arranged to 4 maximum order, and scrambler sequence 0 or 1 is used for order 3 or order 4 for order 1 and scrambler sequence 0.

17. terminal according to claim 13, wherein if enabling both code word 0 and code word 1, the antenna port Relevant information instruction is arranged to 8 maximum order, and scrambler sequence 0 or 1 is used for order 3 for order 2 and scrambler sequence 0.

18. terminal according to claim 13, wherein the antenna port relevant information:

If enabling code word 0 and disabling code word 1, including the DM-RS antenna for indicating to utilize scrambler sequence 0 in order mode 2 The index of port 0, instruction utilize the index of the DM-RS antenna port 1 of scrambler sequence 0, instruction in order mode 2 in order mode 2 The index of the middle DM-RS antenna port 0 using scrambler sequence 1, instruction utilize the DM-RS antenna of scrambler sequence 1 in order mode 2 The index of port 1, instruction utilize the index of the DM-RS antenna port 0 and 1 of scrambler sequence 0, instruction in order mould in order mode 2 Scrambler sequence 0 is utilized in order mode 4 using the index of the DM-RS antenna port 0,1 and 2 of scrambler sequence 0 and instruction in formula 4 At least one of the index of DM-RS antenna port 0,1,2 and 3,

Wherein, the DM-RS antenna port 0 is the first antenna port using DM-RS, and any DM-RS antenna port n is pressed According to the ascending order since DM-RS antenna port 0 come the number of indexing.

19. a kind of base station for sending control information in mobile communication system, comprising:

Controller is to enable code word 0 and disable code word 1, or enable both code word 0 and code word 1 for determination, is used for basis Definitive result and the number of at least one antenna port for terminal distribution, the number of at least one layer identify antenna port phase Information is closed, and for generating the control information including antenna port relevant information；With

Wireless communication unit, for sending the control information to terminal and at least one antenna port distributed being utilized to send out Data associated with described at least one layer are sent,

20. base station according to claim 19, wherein if enabling code word 0 and disabling code word 1, the antenna end Mouth relevant information is configured to indicate that up to four antenna ports for four layers,

21. base station according to claim 19, wherein if enabling both code word 0 and code word 1, the antenna port Relevant information is configured to indicate that up to eight antenna ports for eight layers,

22. base station according to claim 19, wherein if enabling code word 0 and disabling code word 1, the antenna end Mouth relevant information instruction is arranged to 4 maximum order, and scrambler sequence 0 or 1 is used for order 3 or order 4 for order 1 and scrambler sequence 0.

23. base station according to claim 19, wherein if enabling both code word 0 and code word 1, the antenna port Relevant information instruction is arranged to 8 maximum order, and scrambler sequence 0 or 1 is used for order 3 for order 2 and scrambler sequence 0.

24. base station according to claim 19, wherein the antenna port relevant information: