CN107046431A - Transmission, method of reseptance and the device of information - Google Patents

Abstract

The invention provides a kind of transmission of information, method of reseptance and device, wherein, a kind of transmission method of information includes：M demodulated reference signal DMRS port is divided into K DMRS port group, K, M are positive integer and K is less than or equal to M；Independent precoding transmissions DMRS is used in each DMRS port group.Pass through the present invention, M DMRS port is divided into K DMRS port group, and independent precoding transmissions DMRS is used in each DMRS port group, the DMRS in same PRB pair is solved using the low technical problem of its channel estimating performance caused by identical precoding, and then has reached the effect for the performance for improving DMRS estimation channels.

Description

Information transmission and reception method and device

technical field

The present invention relates to the communication field, in particular, to a method and device for transmitting and receiving information.

Background technique

In a wireless communication system, the transmitting end and the receiving end generally use multiple antennas to transmit and receive to obtain a higher rate. One principle of multiple-input-multiple-output (MIMO) technology is to use some characteristics of the channel to form multi-layer transmission that matches the characteristics of the channel, so that it can be obtained without increasing the bandwidth and power. Significant performance improvement, widely used in current systems. For example, in the Long Term Evolution (LTE for short) and its enhanced version (Long Term Evolution-Advanced (LTE A for short)) system, there are multiple multi-antenna technology transmission modes, the transmission mode 2 It is space-frequency diversity, transmission mode 3 is open-loop spatial multiplexing or open-loop MIMO technology, transmission mode 4 is closed-loop spatial multiplexing, transmission mode 5 is multi-user MIMO, and transmission mode 6 is closed-loop spatial multiplexing of a single data stream. Transmission modes 7 and 8 are single-stream and dual-stream beamforming respectively, while transmission mode 9 supports spatial multiplexing of up to 8 layers, and can realize adaptive switching between users and multiple users, and adaptive switching of data layers , supports open-loop MIMO and closed-loop MIMO modes.

Among these transmission modes, some require the user to feed back a precoding matrix indicator (Precoding Matrix Indicator, PMI for short), which is called a closed-loop MIMO technology, and some do not need to feed back the PMI, which is called an open-loop MIMO technology. These transmission modes are defined in LTE/LTE A mainly to adapt to the channel characteristics of different users and the receiving capabilities of users. For example, for a user with one receiving antenna, it can only use MIMO technology with a multiplexing layer of 1. Users with fast channel changes can consider using open-loop MIMO technology. This is because when the user moves faster, the channel The change is relatively fast. During the feedback period, the precoding information fed back by the closed-loop spatial multiplexing cannot accurately and timely reflect the downlink channel information of the base station in the next feedback period, which will lead to performance degradation. The open-loop spatial multiplexing technology has better robustness because it does not need to feed back precoding information.

Early versions of LTE/LTE A, such as Release 8/Release 9, use open-loop MIMO based on Cell-specific Reference Signal (CRS for short), which is implemented by using TM3, and the demodulation mainly considers the use of CRS method to demodulate. Since CRS supports a maximum of 4 ports, TM3 does not support more than 4 ports.

As more and more transmit ports are configured by the base station, the open-loop MIMO technology that supports more ports also needs to be supported. In release 10 and later versions of LTE/LTE A, transmission mode 9 and transmission mode 10 are defined. It can perform open-loop MIMO based on a demodulation reference signal (Demodulation Reference Signal, DMRS for short). In DMRS-based open-loop MIMO, since the terminal does not feed back precoding information, the base station has no a priori information to determine the downlink matching precoding to transmit data, resulting in performance degradation due to inaccurate precoding, especially in In the case of open-loop precoding based on multiple PRB granularity, once the selected precoding is not good, it is easy to cause the transmission failure of the entire data block. It is divided into multiple resource element groups (Resource Element Group, referred to as REG), and each REG uses a precoding independently, so that different codewords can be traversed effectively to improve system performance. The REG described here is a set of resource unit REs corresponding to N OFDM/OFDMA symbols and M subcarriers, the REs in the set resource unit group are in the same PRB pair, and the REs in the REG can be continuous, Can also be discrete.

In related technologies, DMRS only uses the same precoding function in the same PRB pair. In release 10 to release 13 of LTE/LTE A, DMRS supports up to 8 ports, which are port {7, 8, 9, 10, 10, 11, 12, 13, 14}. Each port occupies 12 resource units (Resource Element, referred to as RE).

Since the DMRS in the same PRB pair uses the same precoding, and the transmission data or enhanced Physical Downlink Control Channel (ePDCCH for short) area is divided into K different REGs, the precoding used by each REG may be As a result, the channel estimated by the DMRS cannot well reflect the channel for transmitting data or the ePDCCH REG, resulting in performance degradation.

Aiming at the technical problem of low channel estimation performance caused by DMRSs in the same PRB pair using the same precoding in the related art, no solution has been proposed yet.

Contents of the invention

The present invention provides an information transmission and reception method and device to at least solve the technical problem of low channel estimation performance caused by DMRSs in the same PRB pair using the same precoding in the related art.

According to one aspect of the present invention, a method for transmitting information is provided, including: dividing M demodulation reference signal DMRS ports into K DMRS port groups, wherein K and M are positive integers, and K is less than or equal to M; The DMRS is transmitted on each of the DMRS port groups using independent precoding.

Optionally, before dividing the M DMRS ports into the K DMRS port groups, the method further includes: determining the M, the K, and a channel rank N, where the N is a positive integer.

Optionally, determining the M, the K, and the channel rank N includes: determining the K according to the N and the M; or, determining the N according to the K and the M; or , according to the K and the N, determine the M; wherein, K*N≤M.

Optionally, when the N=1 or the N=2, M=N*K.

Optionally, each DMRS port in the DMRS port group includes 12 resource elements RE.

Optionally, the value of K is determined by the number of REGs divided by REs used to transmit information on the PRB pair where the M DMRS ports are located.

Optionally, the method further includes: dividing the REs used for transmitting information on the PRB pairs where the M DMRS ports are located into K REGs, and using independent precoding to transmit information on the K REGs.

Optionally, the information transmitted in each REG includes: data and/or control channel information.

Optionally, each DMRS port group in the K DMRS port groups and each REG in the K REGs corresponding to each DMRS port group use the same precoding.

Optionally, the channel rank N includes at least one of the following: number of data transmission layers, number of data transmission streams, number of data streams, number of data layers, channel Rank, rank, number of control channel transmission layers, control The number of channel transport streams, the number of control channel streams, the number of control channel layers, the number of transport layers, the number of transport streams, the number of streams, the number of layers, and the number of precoding columns.

According to another aspect of the present invention, a method for receiving information is proposed, including: receiving DMRSs of M demodulation reference signal DMRS ports, and dividing the M demodulation reference signal DMRS ports into K DMRS port groups; using The DMRSs on each DMRS port group independently perform channel estimation and/or information demodulation, M and K are positive integers, and K is less than or equal to M.

Optionally, before dividing the M DMRS ports into the K DMRS port groups, the method further includes: determining the M, the K, and the received channel rank N, where the N is positive integer.

Optionally, determining the M, the K, and the received channel rank N includes: determining the K according to the N and the M; or, determining the N according to the K and the M ; Or, according to the K and the N, determine the M; wherein, K*N≤M.

Optionally, when the N=1 or the N=2, M=N*K.

Optionally, using the received DMRS on each of the DMRS port groups to respectively demodulate the information transmitted on the REG corresponding to the DMRS port group, including: independently perform channel estimation on the DMRS; use the estimated channel to demodulate the information transmitted on the REG corresponding to the DMRS port group.

Optionally, each DMRS port in the DMRS port group includes 12 resource elements RE.

Optionally, the value of K is determined by the number of resource element groups REG divided by REs used to transmit information on the PRB pair where the M DMRS ports are located.

Optionally, receiving the information transmitted on the PRB pair where the M DMRS ports are located, and dividing the REs used to transmit the information on the PRB pair where the M DMRS ports are located into K REGs.

Optionally, the information transmitted in the REG includes: data and/or control channel information.

Optionally, using the DMRS on each of the DMRS port groups to independently perform information demodulation includes: for each DMRS port group in the K DMRS port groups, for each of the K REGs and each of the The REG corresponding to the DMRS port group performs information demodulation.

Optionally, the channel rank N includes at least one of the following: number of data transmission layers, number of data transmission streams, number of data streams, number of data layers, channel Rank, rank, number of control channel transmission layers, control channel transmission The number of streams, the number of control channel streams, the number of control channel layers, the number of transport layers, the number of transport streams, the number of streams, the number of layers, and the number of precoding columns.

According to another aspect of the present invention, there is also provided an information transmission method, including: determining the number K of the first REG and the number P of the second REG in the physical resource block PRB pair, wherein the K, the The P is a positive integer and K≥P; the first information is transmitted in the K first REGs, and the second information is transmitted in the P second REGs.

Optionally, the first information includes: data and/or control channel information, and the second information includes: pilot information.

Optionally, before transmitting the first information in the K first REGs and transmitting the second information in the P second REGs, the method further includes: dividing the PRB into the The K first REGs and/or the P second REGs.

Optionally, the first REG is a resource element RE group in the PRB pair used to transmit the first information, and the second REG is a resource element RE group in the PRB pair used to transmit the second information resource unit RE group.

Optionally, the i-th second REG R _i includes r _i REs, and L _i DMRS ports share the r _i REs, where i, r _i and L _i are positive integers, and 1≤i≤P.

Optionally, the L _i =L, wherein the L is determined by the channel rank N, L, N and i are positive integers and 1≤i≤P.

Optionally, when the N=1 or 2, the L=2; when the N is greater than 2, the L=N.

Optionally, the first number K of REGs, the number P of second REGs, and the number L of DMRS ports of each second REG satisfy the relationship K*N=P*L.

Optionally, when N=1, K=2P, wherein, when N=1 and P=1, K=2; when N>1, K=P.

Optionally, the number of REs included in the i-th second REG R _i is r _i =r, where r is determined by the channel rank N, and r and i are positive integers, 1≤i≤P.

Optionally, when the N=1 or 2, the r=R/P, wherein, R is the total number of REs transmitting DMRS in the PRB pair, and the R is a positive integer; in the When N is greater than 2, said r=12/P.

Optionally, when the N=1 and the total number of REs used to transmit DMRS in the PRB pair is 12, the number K of the first REGs, the number P of the second REGs, The value of the number r of REs included in the second REG includes the following combinations: K=2, P=1, r=12, or K=4, P=2, r=6, or K=6, P= 3, r=4, or K=8, P=4, r=3, or K=12, P=6, r=2; or,

When the N=2 and the total number of REs used to transmit DMRS in the PRB pair is 12, the number K of the first REGs, the number P of the second REGs, the number of the second REGs The value of the RE number r=12/P contained in the REG includes the following combinations: K=2, P=2, r=6, or K=3, P=3, r=4, or K=4, P= 4, r=3, or K=6, P=6, r=2; or,

When the N=1 and the total number of REs used to transmit DMRS in the PRB pair is 24, the number K of the first REGs, the number P of the second REGs, the number of the second REGs The value of the RE number r=24/P contained in the REG includes the following combinations: K=4, P=2, r=12, or K=8, P=4, r=6, or K=12, P= 6, r=4, or K=16, P=8, r=3, or K=24, P=12, r=2; or,

When the N=2 and the total number of REs used to transmit DMRS in the PRB pair is 24, the number K of the first REGs, the number P of the second REGs, the number of the second REGs The value of the RE number r=24/P contained in the REG includes the following combinations: K=4, P=4, r=6, or K=6, P=6, r=4, or K=8, P= 8, r=3, or K=12, P=12, r=2; or,

When the N=3 or 4, and the total number of REs used to transmit DMRS in the PRB pair is 24, the first REG number K, the second REG number P, the The value of the number of REs included in the second REG r=12/P includes the following combinations: K=2, P=2, r=6, or K=3, P=3, r=4, or K=4, P=4, r=3, or K=6, P=6, r=2; or,

When N>4, and the total number of REs used to transmit DMRS in the PRB pair is 24, the number K of the first REGs, the number P of the second REGs, the number of the second REGs The value of the number of REs included in the REG r=12/P includes the following combinations: K=3, P=3, r=4.

Optionally, the channel rank N includes at least one of the following: number of data transmission layers, number of data transmission streams, number of data streams, number of data layers, channel Rank, rank, number of control channel transmission layers, control The number of channel transport streams, the number of control channel streams, the number of control channel layers, the number of transport layers, the number of transport streams, the number of streams, the number of layers, and the number of precoding columns.

According to another aspect of the present invention, there is also provided a method for receiving information, including: receiving the first information transmitted by the K first REGs and the second information transmitted by the P second REGs of the physical resource block PRB pair , wherein, the K and the P are positive integers, and K≥P; independently perform channel estimation on the second information on the P second REGs, and perform channel estimation on the first information on the K first REGs A message is demodulated.

Optionally, independently using the second information to demodulate the first information corresponding to the second information includes: using the second information to independently perform channel estimation; using Estimate the channels of the K first REGs corresponding to the estimated channels, and perform data information demodulation on the first information.

Optionally, the first information includes: data and/or control channel information, and the second information includes: pilot information.

According to one aspect of the present invention, an information transmission device is provided, including: a first division module, configured to divide M demodulation reference signal DMRS ports into K DMRS port groups, wherein K and M are positive Integer; the first transmission module is configured to use independent precoding to transmit DMRS on each of the DMRS port groups.

According to another aspect of the present invention, a device for receiving information is provided, including: a second division module, configured to receive DMRSs of M demodulation reference signal DMRS ports, and divide the M demodulation reference signal DMRS ports into K DMRS port groups; a first demodulation module, configured to independently perform channel estimation and/or information demodulation using the DMRS on each of the DMRS port groups, M and K are positive integers, and K is less than or equal to M.

According to another aspect of the present invention, an information transmission device is provided, including: a determination module, configured to determine the number K of the first REG and the number P of the second REG in the physical resource block PRB pair, wherein the Said K and said P are positive integers and K≥P; the second transmission module is configured to transmit the first information in the K first REGs, and transmit the second information in the P second REGs.

According to another aspect of the present invention, an information receiving device is provided, including: a receiving module, configured to receive the first information transmitted by the K first REGs of the PRB pair and the information transmitted by the P second REGs. The second information, wherein, the K and the P are positive integers, and K≥P; the second demodulation module is used to independently perform channel estimation on the second information on the P second REGs, And performing information demodulation on the first information on the K first REGs.

Through the present invention, M demodulation reference signal DMRS ports are divided into K DMRS port groups, K and M are positive integers and K is less than or equal to M; each DMRS port group uses an independent precoding method to transmit DMRS, Divide M DMRS ports into K DMRS port groups, and use independent precoding to transmit DMRS on each DMRS port group, which solves the channel estimation performance caused by DMRS in the same PRB pair using the same precoding Low technical problems, and then achieve the effect of improving the performance of DMRS channel estimation.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

FIG. 1 is a flow chart 1 of an information transmission method according to an embodiment of the present invention;

FIG. 2 is a first flowchart of a method for receiving information according to an embodiment of the present invention;

FIG. 3 is a second flowchart of an information transmission method according to an embodiment of the present invention;

FIG. 4 is a second flowchart of a method for receiving information according to an embodiment of the present invention;

FIG. 5 is a structural block diagram 1 of an information transmission device according to an embodiment of the present invention;

FIG. 6 is a structural block diagram 1 of an information receiving device according to an embodiment of the present invention;

FIG. 7 is a second structural block diagram of an information transmission device according to an embodiment of the present invention;

FIG. 8 is a second structural block diagram of an information receiving device according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a frame structure with 12 DMRSs according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a frame structure with 24 DMRSs according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of dividing the first REG into 2, 3, 4, and 6 shares according to an optional embodiment of the present invention;

Fig. 12 is a schematic diagram of dividing the second REG into 2, 3, 4, and 6 parts according to an optional embodiment of the present invention, R=12;

Fig. 13 is a schematic diagram of dividing the second REG into 2, 3, 4, and 6 parts according to an optional embodiment of the present invention, R=24;

Fig. 14 is a schematic diagram of dividing the second REG into 4, 6, 8, and 12 parts according to an optional embodiment of the present invention, R=24;

FIG. 15 is a first correspondence relationship between the second REG and the first REG according to an optional embodiment of the present invention;

Fig. 16 is a second correspondence relationship between the second REG and the first REG according to an optional embodiment of the present invention.

detailed description

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence.

In this embodiment, a method for transmitting information is provided. FIG. 1 is a flow chart 1 of the method for transmitting information according to an embodiment of the present invention. As shown in FIG. 1 , the process includes the following steps:

Step S102, dividing the M DMRS ports into K DMRS port groups, K and M are positive integers, and K is less than or equal to M;

Step S104, using independent precoding to transmit DMRS on each DMRS port group.

Through the above steps, the sending end divides M DMRS ports into K DMRS port groups, and uses independent precoding to transmit DMRS on each DMRS port group, which solves the problem that the DMRS in the same PRB pair use the same precoding. The technical problem of low channel estimation performance is caused, and the effect of improving the performance of DMRS channel estimation is achieved.

In an optional embodiment, before step S102, it may further include: the sending end determines M, K, and channel rank N, where N is a positive integer.

During implementation, K may be determined according to N and M; or, N may be determined according to K and M; or M may be determined according to K and N; wherein, K*N≤M.

For example, the sending end determines the number K of REGs according to the channel rank N and the number M of DMRS ports, and divides the M DMRS ports P1, P2, ..., PM into K DMRS port groups S1, S2, ..., SK, each The DMRS port group uses an independent precoding transmission demodulation reference pilot signal DMRS to demodulate the information transmitted on the REG corresponding to the port group. Wherein, K, M and N are positive integers, and K*N<=M.

Or, according to the number K of REGs and the number M of DMRS ports, the sending end determines that the channel rank is N, and divides the M DMRS ports P1, P2,..., PM into K DMRS port groups S1, S2,..., SK, Each DMRS port group uses an independent precoded transmission demodulation reference pilot signal DMRS to demodulate the information transmitted on the REG corresponding to the port group. Wherein, K, M and N are positive integers, and K*N<=M.

Alternatively, the sending end determines the number M of DMRS ports to be configured according to the number K of REGs and the channel rank N, and divides the M DMRS ports P1, P2, ..., PM into K DMRS port groups S1, S2, ... , SK, each DMRS port group uses an independent precoding transmission demodulation reference pilot signal DMRS to demodulate the information transmitted on the REG corresponding to the port group, where K, M and N are positive integers, And K*N<=M.

In an optional embodiment, when the number of data layers to be transmitted or the channel rank is N=1 or N=2, M=N*K.

Wherein, each DMRS port P1, P2, . . . , PM in the DMRS port group may include 12 resource units RE.

Wherein, the value of K may be determined by the number of REGs divided by REs used to transmit information on the PRB pair where the M DMRS ports are located.

Before or after step S102, it may further include: dividing the REs used for transmitting information on the PRB pairs where the M DMRS ports are located into K REGs, and using independent precoding to transmit information on the K REGs.

Wherein, the information may include: data and/or control channel information.

Each DMRS port group in the K DMRS port groups and the REG corresponding to each DMRS port group in the K REGs may use the same precoding.

Wherein, the channel rank N may include at least one of the following: number of data transmission layers, number of data transmission flows, number of data flows, number of data layers, channel Rank, rank, number of control channel transmission layers, control channel transmission flow number, number of control channel streams, number of control channel layers, number of transport layers, number of transport streams, number of streams, number of layers, number of precoding columns.

In this embodiment, a method for receiving information is provided. FIG. 2 is a flowchart 1 of a method for receiving information according to an embodiment of the present invention. As shown in FIG. 2 , the process includes the following steps:

Step S202, receiving the DMRS of M demodulation reference signal DMRS ports, and dividing the M demodulation reference signal DMRS ports into K DMRS port groups;

Step S204, use the DMRS on each DMRS port group to independently perform channel estimation and/or information demodulation, M and K are positive integers, and K is less than or equal to M.

Through the above steps, the M DMRS ports received are divided into K DMRS port groups, and the DMRS on each DMRS port group is used to independently perform channel estimation and/or information demodulation, wherein M and K are positive integers, K is less than or equal to M, which solves the technical problem of low channel estimation performance caused by the DMRS in the same PRB pair using the same precoding, and then achieves the effect of improving the performance of the DMRS channel estimation at the receiving end.

Before the above step S202, it may further include: determining M, K, and the received channel rank N, where N is a positive integer.

During implementation, K may be determined according to N and M; or, N may be determined according to K and M; or M may be determined according to K and N; wherein, K*N≤M.

For example, the receiving end can determine the number K of REGs according to the received channel rank N information and the received M DMRS port information, and divide the M DMRS ports P1, P2,..., PM into K DMRS port groups S1, S2, ..., SK, independently perform channel estimation on the received demodulation reference pilot signal DMRS of each DMRS port group, and use the channel estimated by the port group to detect the information transmitted on the REG corresponding to the port group. Wherein, K, M and N are positive integers, and K*N<=M.

Alternatively, the receiving end may determine the channel rank as N according to the number K of REGs and the received information of the M DMRS ports, and divide the M DMRS ports P1, P2, ..., PM into K DMRS port groups S1, S2, ... , SK, independently perform channel estimation on each received DMRS port demodulation reference pilot signal DMRS, and use the channel estimated by the port group to detect the information transmitted on the REG corresponding to the port group. Wherein, K, M and N are positive integers, and K*N<=M.

Alternatively, the receiving end may determine the received M DMRS port information according to the number K of REGs and the channel rank N, and divide the M DMRS ports P1, P2,..., PM into K DMRS port groups S1, S2,... , SK, independently perform channel estimation on each received DMRS port demodulation reference pilot signal DMRS, and use the channel estimated by the port group to detect the information transmitted on the REG corresponding to the port group. Wherein, K, M and N are positive integers, and K*N<=M.

In an optional embodiment, when the channel rank N=1 or N=2, M=N*K.

Wherein, each DMRS port P1, P2, . . . , PM in the DMRS port group may include 12 resource units RE.

In an optional embodiment, the value of K is determined by the number of REGs divided by REs used to transmit information on the PRB pair where the M DMRS ports are located.

For example, the value of K may be equal to the number of REGs allocated on the transmission resource where M DMRS ports are located.

In an optional embodiment, before step S204, it may also include: receiving the information transmitted on the PRB pairs where the M DMRS ports are located, and using the information transmitted on the PRB pairs where the M DMRS ports are located. The RE is divided into K REGs.

Wherein, the information transmitted on the REG may include: data and/or control channel information.

In an optional embodiment, independently performing information demodulation using the DMRS on each of the DMRS port groups in step S204 may include: each DMRS port group in the K DMRS port groups, for each of the K REGs The REG corresponding to each DMRS port group performs information demodulation.

Wherein, the channel rank N may include at least one of the following: number of data transmission layers, number of data transmission flows, number of data flows, number of data layers, channel Rank, rank, number of control channel transmission layers, control channel transmission flow number, number of control channel streams, number of control channel layers, number of transport layers, number of transport streams, number of streams, number of layers, number of precoding columns.

In this embodiment, a method for transmitting information is also provided. FIG. 3 is a flow chart 2 of the method for transmitting information according to an embodiment of the present invention. As shown in FIG. 3 , the process includes the following steps:

Step S302, determining the number K of the first REG and the number P of the second REG in the PRB pair, where K and P are positive integers and K≥P;

Step S304, transmitting the first information in the K first REGs, and transmitting the second information in the P second REGs.

Through the above steps, a PRB pair uses P second REGs to transmit the second information, that is, a PRB pair can contain P pieces of second information and K pieces of first information, which solves the problem of the same PRB pair. DMRS uses the same precoding to cause the technical problem of low channel estimation performance, and then achieves the effect of improving the performance of DMRS channel estimation at the receiving end.

Wherein, the first information may include: data and/or control channel information, and the second information may include: pilot information.

In an optional embodiment, step S304 may be implemented by the following methods, including: using independent precoding to transmit the first information in the K first REGs, and using independent precoding in the P second REGs respectively. Encoding transmits the second information. In this optional embodiment, independent precoding is used to transmit information in K first REGs and P second REGs respectively, which further improves the performance of open-loop MIMO.

In an optional embodiment, before step S304, it may further include: dividing the PRB into K first REGs and/or P second REGs.

Wherein, the first REG is a resource element RE group used to transmit the first information in the PRB pair, and the second REG is a resource element RE group used to transmit the second information in the PRB pair.

Wherein, the i-th second REG R _i may include r _i REs, and L _i DMRS ports share the r _i REs, where i, r _i and L _i are positive integers, and 1≤i ≤P.

In an optional embodiment, L _i =L, where L is determined by the channel rank N, L, N and i are positive integers and 1≤i≤P.

In an optional embodiment, when the channel rank N=1 or 2, L=2; when N is greater than 2, L=N.

Wherein, the number K of the first REG, the number P of the second REG, and the number L of DMRS ports of each second REG satisfy the relationship: K*N=P*L.

In an optional embodiment, when N=1, K=2P, where N=1, when P=1, K=2; when N>1, K=P.

Wherein, the number of REs included in the i-th second REG R _i is r _i =r, where r is determined by the channel rank N, and r and i are positive integers, 1≤i≤P.

In an optional embodiment, when N=1 or 2, r=R/P, wherein, R is the total number of REs transmitting DMRS in the PRB pair, and R is a positive integer; when N is greater than 2, r=12/P.

For example, when N=1 and the total number of REs used to transmit DMRS in a PRB pair is 12, the number K of the first REG, the number P of the second REG, and the number r of REs included in the second REG The values include the following combinations: K=2, P=1, r=12, or K=4, P=2, r=6, or K=6, P=3, r=4, or K=8, P =4, r=3, or K=12, P=6, r=2;

For another example, when N=2 and the total number of REs used to transmit DMRS in a PRB pair is 12, the number K of the first REG, the number P of the second REG, and the number r of REs included in the second REG The value of =12/P includes the following combinations: K=2, P=2, r=6, or K=3, P=3, r=4, or K=4, P=4, r=3, or K=6, P=6, r=2;

For another example, when N=1 and the total number of REs used to transmit DMRS in a PRB pair is 24, the number K of the first REG, the number P of the second REG, and the number r of REs included in the second REG The value of =24/P includes the following combinations: K=4, P=2, r=12, or K=8, P=4, r=6, or K=12, P=6, r=4, or K=16, P=8, r=3, or K=24, P=12, r=2;

For another example, when N=2 and the total number of REs used to transmit DMRS in a PRB pair is 24, the number K of the first REGs, the number P of the second REGs, and the number r of REs contained in the second REGs The value of =24/P includes the following combinations: K=4, P=4, r=6, or K=6, P=6, r=4, or K=8, P=8, r=3, or K=12, P=12, r=2;

For another example, when N=3 or 4, and the total number of REs used to transmit DMRS in the PRB pair is 24, the number K of the first REG, the number P of the second REG, and the number of REs included in the second REG The value of the number r=12/P includes the following combinations: K=2, P=2, r=6, or K=3, P=3, r=4, or K=4, P=4, r=3 , or K=6, P=6, r=2;

For another example, when N>4, and the total number of REs used to transmit DMRS in the PRB pair is 24, the number K of the first REG, the number P of the second REG, and the number r of REs included in the second REG The value of =12/P includes the following combinations: K=3, P=3, r=4.

Wherein, the channel rank N may include at least one of the following: number of data transmission layers, number of data transmission flows, number of data flows, number of data layers, channel Rank, rank, number of control channel transmission layers, control channel transmission flow number, number of control channel streams, number of control channel layers, number of transport layers, number of transport streams, number of streams, number of layers, number of precoding columns.

In this embodiment, a method for receiving information is also provided. FIG. 4 is a flow chart 2 of the method for receiving information according to an embodiment of the present invention. As shown in FIG. 4 , the process includes the following steps:

Step S402, receiving the first information transmitted by K first REGs and the second information transmitted by P second REGs of the physical resource block PRB pair, wherein K and P are positive integers, and K is greater than or equal to P;

Step S404, independently perform channel estimation on the second information on the P second REGs, and perform information demodulation on the first information on the K first REGs.

Through the above steps, the second information transmitted by P second REGs and K pieces of first information are received in the PRB pair, that is, the PRB can include K pieces of first information and P pieces of second information, which solves the problem of the same The DMRS in a PRB pair uses the same precoding to cause the technical problem of low channel estimation performance, thereby achieving the effect of improving the channel estimation performance of the DMRS at the receiving end.

In an optional embodiment, step S404 may include: the receiving end uses the second information to independently perform channel estimation; then uses the estimated channels to estimate the channels of the corresponding K first REGs, and Information demodulation is performed on the first information.

Wherein, the first information may include: data and/or control channel information, and the second information may include: pilot information.

For example, the receiving end may receive the first information transmitted by K first REGs D1, ..., DK and the second information transmitted by P second REGs R1, ..., RP of the same PRB pair from the same transmitting end, Use the second information transmitted by the P second REGs R1,...,RP to estimate the channel, use the estimated channel to estimate the channel of the K first REGs, and perform data detection on the first information transmitted by the first REG. Wherein, K and P are positive integers, and K is greater than or equal to P.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is Better implementation. Based on such an understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products are stored in a storage medium (such as ROM/RAM, disk, CD) contains several instructions to enable a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present invention.

In this embodiment, a device for transmitting and receiving information is also provided, and the device is used to implement the above embodiments and preferred implementation modes, and what has already been described will not be repeated. As used below, the term "module" may be a combination of software and/or hardware that realizes a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.

Fig. 5 is a structural block diagram 1 of an information transmission device according to an embodiment of the present invention. As shown in Fig. 5, the device includes a first division module 52 and a first transmission module 54, and the device will be described below.

The first division module 52 is used to divide the M DMRS ports into K DMRS port groups, K and M are positive integers, and K is less than or equal to M; the first transmission module 54 is connected to the first division module 52 for each Use independent precoding to transmit DMRS on each DMRS port group.

Fig. 6 is a structural block diagram 1 of an information receiving device according to an embodiment of the present invention. As shown in Fig. 6, the device includes a second division module 62 and a first demodulation module 64, and the device will be described below.

The second division module 62 is used to receive the DMRS of M demodulation reference signal DMRS ports, and divide the M demodulation reference signal DMRS ports into K DMRS port groups; the first demodulation module 64 is connected to the second division module 62 , for independently performing channel estimation and/or information demodulation by using the DMRS on each DMRS port group, M and K are positive integers, and K is less than or equal to M.

Fig. 7 is a structural block diagram II of an information transmission device according to an embodiment of the present invention. As shown in Fig. 7, the device includes a determination module 72 and a second transmission module 74, and the device will be described below.

The determination module 72 is configured to determine the number K of the first REG and the number P of the second REG in the physical resource block PRB pair, wherein K and P are positive integers and K≥P; the second transmission module 74 is connected to A determining module 72, configured to transmit the first information in the K first REGs, and transmit the second information in the P second REGs.

Fig. 8 is a structural block diagram II of an information receiving device according to an embodiment of the present invention. As shown in Fig. 8, the device includes a receiving module 82 and a second demodulation module 84, and the device will be described below.

The receiving module 82 is configured to receive the first information transmitted by the K first REGs of the physical resource block PRB pair and the second information transmitted by the P second REGs, where K and P are positive integers, and K is greater than or equal to P; the second demodulation module 84, connected to the receiving module 82, for independently performing channel estimation on the second information on the P second REGs, and performing information demodulation on the first information on the K first REGs .

In the following, the method and device for transmitting and receiving information according to the embodiments of the present invention will be described in conjunction with a specific implementation environment.

In various embodiments of the present invention, the sending end in the downlink includes, but is not limited to: various wireless communication devices such as a macro base station, a micro base station, and a wireless access point. The receiving end includes but is not limited to: various wireless communication devices such as data cards, mobile phones, notebook computers, personal computers, tablet computers, personal digital assistants, and Bluetooth. In the uplink, the sending end includes, but is not limited to: various wireless communication devices such as data cards, mobile phones, notebook computers, personal computers, tablet computers, personal digital assistants, and Bluetooth. The receiving end includes, but is not limited to: various wireless communication devices such as macro base stations, micro base stations, and wireless access points.

The channel rank N may include at least one of the following: number of data transmission layers, number of data transmission streams, number of data streams, number of data layers, channel Rank, rank, number of control channel transmission layers, number of control channel transmission streams , the number of control channel streams, the number of control channel layers, the number of transport layers, the number of transport streams, the number of streams, the number of layers, and the number of precoding columns. In order to facilitate the description and reduce repeated descriptions, we describe the sending end, receiving end and some concepts, scenarios and configuration methods used in Embodiment 1 to Embodiment 3 as follows:

In a system including at least one sending end and at least one receiving end, the sending end uses Nb PRBs to transmit data or ePDCCH and pilot information to a user served by it. Each PRB pair is a set S of resource elements RE including Nc subcarriers and Ns OFDM/OFDMA symbols, which includes Nc*Ns REs. Divide each PRB transmission data or all REs of ePDCCH into K REGs, where K is a positive integer greater than 1, each REG group contains several REs in the same PRB, and REs in different REG groups are not repeated of. In this embodiment, the transmitting end uses the open-loop MIMO form of transmission mode 9 or transmission mode 10, and K REGs are sent to the user after using independent precoding. The transmitting end also divides the M ports for demodulating the reference pilot into K groups, configures independent precoding and sends them to the receiving end, the user receives the reference pilot signals of M DMRS ports, and divides the M ports into K groups, respectively Do channel estimation. Here, one DMRS group is associated with one REG group. Without loss of generality, it is assumed that the kth group of DMRS ports is associated with the kth group of REGs, that is, the user uses the kth group of DMRS ports to perform channel estimation, and uses the estimated channel to obtain the kth REG Channel estimation in the REG area, and data detection, demodulation, decoding, etc. for the kth REG.

Based on the above description, we will give some optional embodiments of the present invention, as described in Embodiment 1 to Embodiment 3.

Embodiment 1: Determine the number of port groups K according to the channel rank N and the number of ports M

For the sender:

According to the channel rank N and the number M of DMRS ports allocated to the receiving end, the transmitting end obtains K REGs that need to be divided into one PRB, and a method for determining K is K=M/N. And divide the REs in each PRB pair into K REGG1, G2, ..., GK, each group includes M1, M2, ..., MK REs, and one RE in the same PRB belongs to and only belongs to one REG group .

At the same time, the sending end divides the M DMRS ports P1, P2, ..., PM into K DMRS port groups S1, S2, ..., SK. Use the precoding Ci to precode the kth DMRS port group Sk and the kth REG group Gk respectively, and transmit to the user C _i a precoding matrix of Nt*N, where k=1,...,K. Here K, M and N are positive integers, and K*N<=M.

The receiving end determines the number K of REGs by using N and M according to the received channel rank N information and the received information of M DMRS ports, and a determination method is K=M/N. And M DMRS ports P1, P2, ..., PM are divided into K DMRS port groups S1, S2, ..., SK, independently carry out channel estimation to the demodulation reference pilot signal DMRS of the kth DMRS port group received, Data detection is performed for the kth REG using the estimated channel. Wherein, K, M and N are positive integers, and K*N<=M.

The following uses the frame structure of LTE/LTE A to illustrate the values of various parameters. For example, in the DMRS frame structure with only 12 REs, as shown in Figure 9, the value of M is 2, and port 7 and port 8 are covered by orthogonal Orthogonal cover codes (OCC for short) share 12 DMRS REs, and the number of data layers to be transmitted is 1. Then, the REGs are divided into K=2 REG groups, and the DMRSs are also divided into two groups. Port 7 and REG1 use precoding C1, and port 8 and REG2 use precoding C2. The receiving end receives the DMRS signal of two ports port 7 and port 8, and uses it to estimate the channel, uses the channel estimated by port7 to estimate the channel of REG1, and performs data detection, uses the channel estimated by port8 to estimate the channel of REG2, and performs data detection detection, where C1 and C2 are Nt*1 precoding matrices.

In the DMRS frame structure with only 24 REs, as shown in Figure 10, the value of M is 4, and the corresponding ports are port 7 and port8, port 9 and port 10, among which, port7 and port8 share 12 DMRS REs through OCC , port 9 and port10, share 12 DMRS REs through OCC, according to the size of N, discuss in two cases

When the channel rank N is 1, it is divided into K=4 REG groups, and the DMRS is also divided into 4 groups. Port 7~port10 use precoding C1~C4 respectively, and REG1~REG4 use precoding C1~C4 respectively. The receiving end receives ports port 7~port10 and uses them for channel estimation to obtain the channels of REG1~REG4 respectively, and uses the estimated channels to perform data detection on REG, where C1~C4 is the precoding matrix of Nt*1.

When the channel rank N is 2, it is divided into K=2 REG groups, DMRS is also divided into 2 groups, port 7 and port 8 use precoding C1, port 9 and port 10 use precoding C2, REG1 and REG2 use precoding C1 respectively and C2. The receiving end receives the DMRS signals of M ports and uses them to estimate the channel. Use port7 and port8 to estimate the channel of REG1 data layer 1 and 2 respectively, and perform data detection; use port9 and port 10 to estimate the channel of REG2 data layer 1 and 2 respectively, and perform data detection, here, C1 and C2 are Nt *2 precoding matrix.

The port numbers of port7-port 10 here are just one of the embodiments, and other port numbers can also be used, such as port1-port 4. The operation steps are similar, and they are not listed here.

Here, what is transmitted in the REG is data, and the enhanced downlink control channel ePDCCH information can also be transmitted. The process and flow are the same as the way of transmitting data, as long as the transmission data is changed to ePDCCH. I won't repeat it here.

Embodiment 2: Determine the channel rank N according to the number K of REGs and the number M of ports

For the sender:

The sending end determines the channel rank N according to the number K of REGs and the number M of DMRS ports allocated to the receiving end. One method of determining N is N=M/K, and the REs in each PRB pair are divided into K REGs G1, G2, ..., GK, each group includes M1, M2, ..., MK REs, and one RE in the same PRB belongs to and only belongs to one REG group.

At the same time, the sending end divides the M DMRS ports P1, P2, ..., PM into K DMRS port groups S1, S2, ..., SK. Use the precoding C _i to precode the kth DMRS port group Sk and the kth REG group Gk respectively, and transmit to the user C _i a precoding matrix of Nt*N, where k=1, . . . , K. Here K, M and N are positive integers, and K*N<=M.

The receiving end determines the channel rank N according to the number K of REGs and the received information of the M DMRS ports, and one method for determining N is N=M/K. And M DMRS ports P1, P2, ..., PM are divided into K DMRS port groups S1, S2, ..., SK, independently carry out channel estimation to the demodulation reference pilot signal DMRS of the kth DMRS port group received, Data detection is performed for the kth REG using the estimated channel. Wherein, K, M and N are positive integers, and K*N<=M.

The following uses the frame structure of LTE/LTE A to illustrate the values of various parameters. For example, in the DMRS frame structure with only 12 REs, as shown in Figure 9, the value of M is 2, and port 7 and port 8 are covered by orthogonal Orthogonal cover codes (OCC) share 12 DMRS REs, which are divided into K=2 REG groups, and the DMRS is also divided into two groups, so the number of data layers transmitted is 1. Port 7 and REG1 use precoding C1, and port 8 and REG2 use precoding C2. The receiving end receives the DMRS signal of two ports port 7 and port 8, and uses it to estimate the channel, uses the channel estimated by port7 to estimate the channel of REG1, and performs data detection, uses the channel estimated by port8 to estimate the channel of REG2, and performs data detection detection, where C1 and C2 are Nt*1 precoding matrices.

In the DMRS frame structure with only 24 REs, as shown in Figure 10, the value of M is 4, and the corresponding ports are port 7 and port8, port 9 and port 10, among which, port7 and port8 share 12 DMRS REs through OCC , port 9 and port10 share 12 DMRS REs through OCC. According to the size of N, there are two cases for discussion:

Divided into K=4 REG groups, DMRS is also divided into 4 groups, then channel rank N=M/K=4/4=1, port 7~port10 use precoding C1~C4 respectively, REG1~REG4 use precoding C1~C4 respectively C4. The receiving end receives ports port 7~port10 and uses them for channel estimation to obtain the channels of REG1~REG4 respectively, and uses the estimated channels to perform data detection on REG, where C1~C4 is the precoding matrix of Nt*1.

Divided into K=2 REG groups, DMRS is also divided into 2 groups, then the channel rank N=M/K=4/2=2, then port 7 and port 8 use precoding C1, port 9 and port 10 use precoding C2, REG1 and REG2 use precoding C1 and C2 respectively. The receiving end receives the DMRS signals of M ports and uses them to estimate the channel. Use port7 and port8 to estimate the channel of REG1 data layer 1 and 2 respectively, and perform data detection; use port9 and port 10 to estimate the channel of REG2 data layer 1 and 2 respectively, and perform data detection, here, C1 and C2 are Nt *2 precoding matrix.

The port numbers of port7-port 10 here are just one of the embodiments, and other port numbers can also be used, such as port1-port 4. The operation steps are similar, and they are not listed here.

Here, what is transmitted in the REG is data, and the enhanced downlink control channel ePDCCH information can also be transmitted. The process and flow are the same as the way of transmitting data, as long as the transmission data is changed to ePDCCH. I won't repeat it here.

Embodiment 3: Determine the number of ports M according to the number K of REGs and the channel rank N

For the sender:

The sending end determines the number M of DMRS ports allocated to the receiving end according to the number K of REGs and the channel rank N, and determines that one of the methods for determining M is M=N*K, and the REs in each PRB pair are divided into K REGs G1, G2, ..., GK, each group includes M1, M2, ..., MK REs, and one RE in the same PRB belongs to and only belongs to one REG group.

At the same time, the sending end divides the M DMRS ports P1, P2, ..., PM into K DMRS port groups S1, S2, ..., SK. Use the precoding C _i to precode the kth DMRS port group Sk and the kth REG group Gk respectively, and transmit to the user C _i a precoding matrix of Nt*N, where k=1, . . . , K. Here K, M and N are positive integers, and K*N<=M.

The receiving end receives the number K of REGs and the channel rank N, determines the number M of DMRS ports, and one of the determination methods is M=N*K, and receives the information of the M DMRS ports. And M DMRS ports P1, P2, ..., PM are divided into K DMRS port groups S1, S2, ..., SK, independently carry out channel estimation to the demodulation reference pilot signal DMRS of the kth DMRS port group received, Data detection is performed for the kth REG using the estimated channel. Wherein, K, M and N are positive integers, and K*N<=M.

The following uses the frame structure of LTE/LTE A to illustrate the values of various parameters. For example, in a DMRS frame structure with only 12 REs, the sender needs to divide the PRB into K=2 REGs, and each REG transmits 1 data flow, as shown in Figure 9, it is necessary to configure M=N*K=2 ports for this user, port 7 and port8 share 12 DMRSREs through OCC, and the sender divides the PRB into K=2 REG groups, The DMRS is also divided into two groups, and the number of data layers transmitted is 1. port7 and REG1 use precoding C1, port 8 and REG2 use precoding C2. The receiving end receives the DMRS signal of two ports port 7 and port8, and uses it to estimate the channel, uses the channel estimated by port7 to estimate the channel of REG1, and performs data detection, uses the channel estimated by port8 to estimate the channel of REG2, and performs data detection , where C1 and C2 are Nt*1 precoding matrices.

In a DMRS frame structure with only 24 REs, as shown in Figure 10, the sender needs to divide the PRB into 4 REGs, and each REG transmits N=1 data streams (channel rank N=1), then the sender needs to configure M= 4 ports, the corresponding ports are port 7 and port8, port 9 and port 10, among which, port7 and port8 share 12 DMRS REs through OCC, port 9 and port10 share 12 DMRS REs through OCC. The sender divides PRB into K=4 REG groups, DMRS is also divided into 4 groups, the number of data layers transmitted by each REG is N=1, port 7~port10 use precoding C1~C4 respectively, and REG1~REG4 use precoding C1 respectively ~C4. The receiving end receives ports port 7~port10 and uses them for channel estimation to obtain the channels of REG1~REG4 respectively, and uses the estimated channels to perform data detection on REG, where C1~C4 is the precoding matrix of Nt*1.

In the DMRS frame structure with only 24 REs, as shown in Figure 10, the sender needs to divide the PRB into 2 REGs, and each REG transmits N=2 data streams (channel rank N=2), then the sender needs to configure M= 4 ports are divided into K=2 REG groups, and DMRS is also divided into 2 groups, then, the number of data layers transmitted is N=2 (channel rank N=2), then, port 7 and port 8 use precoding C1, port 9 and port 10 use precoding C2, REG1 and REG2 use precoding C1 and C2 respectively. The receiving end receives the DMRS signals of M ports and uses them to estimate the channel. Use port7 and port8 to estimate the channel of REG1 data layer 1 and 2 respectively, and perform data detection; use port9 and port 10 to estimate the channel of REG2 data layer 1 and 2 respectively, and perform data detection, here, C1 and C2 are Nt *2 precoding matrix.

The port numbers of port7-port 10 here are just one of the embodiments, and other port numbers can also be used, such as port1-port 4. The operation steps are similar, and they are not listed here.

Here, what is transmitted in the REG is data, and the enhanced downlink control channel ePDCCH information can also be transmitted. The process and flow are the same as the way of transmitting data, as long as the transmission data is changed to ePDCCH. I won't repeat it here.

In order to facilitate the description and reduce repeated descriptions, we describe the sending end, receiving end and some concepts, scenarios and configuration methods used in Embodiment 4 to Embodiment 7 as follows:

In a system including at least one sending end and at least one receiving end, the number of antennas/ports/array elements configured at each sending end is Nt, and the number of antennas/ports/array elements configured at the receiving end is Nr, where Nt is greater than A positive integer of 1, and Nr is a positive integer greater than 0. The sending end uses Nb PRBs to transmit data or ePDCCH, pilot signals to a user served by it. Each PRB pair is a set S of resource elements RE including Nc subcarriers and Ns OFDM/OFDMA symbols, which includes Nc*Ns REs. Divide all REs for transmitting data or ePDCCH in each PRB pair into K first REGD1, . . . , DK. Where K is a positive integer greater than 1, each first REG group includes several REs in the same PRB, and REs in different REG groups are not repeated. In this embodiment, the transmitting end uses the open-loop MIMO form of transmission mode 9 or transmission mode 10, and the K first REGs are sent to the user after using independent precoding. The sending end divides the R REs that transmit the demodulation reference pilot into P second REGs R1,...,RP, where the i-th second REG of the second REG includes r _i DMRS REs, including L _i DMRS REs Ports share the r _i DMRS REs through OCC, i=1, . . . , P. The receiving end receives the transmission data or the information on the REs of the ePDCCH, and divides the transmission data or the REs of the ePDCCH into K first REG groups like the sending end. The receiving end receives the reference pilot signals on the R DMRS REs in the same PRB, and divides them into P second REGs like the sending end, and the i-th second REG of the second REG includes r _i DMRS REs REs, including L _i DMRS ports, share the r _i DMRS REs through OCC, i=1, . . . , P. Use each REG of the received P second REGs or each DMRS port of each REG to perform channel estimation independently, and use the estimated channel to perform channel estimation on the K first REGs, and use the channel estimated for the REGs Detect and demodulate the data or ePDCCH transmitted on the first REG.

Based on the above description, we will give some optional embodiments of the present invention, as described in Embodiment 4 to Embodiment 7.

Embodiment 4: According to the number K of the first REG and the number P of the second REG, the number of REs of the second REG is determined, and the airspace is divided into ports

For the sender:

In order to transmit data to the same receiving end, the sending end divides each PRB of the transmission data into K first REGs D1,..., DK, as shown in Figure 3, divides the first REG into K=2, 3, 4 , 6, a schematic diagram, of course there are other similar division methods, which are not listed here. Each first REG uses independent precoding to process the data or ePDCCH and transmit it to the receiving end. In order to allow the receiving end to demodulate and detect these data, the sending end needs to use R DMRS REs to transmit DMRS, and divide the R DMRS REs into P second REGs R1,...,RP, a special division of the second REG The REG method is P=1, that is, there is only one second REG, the second REG includes 12 REs, and each REG has 2 DMRS ports. When the channel rank or the number of data transmission layers N=1, K=2, that is, the first REG is divided into two REGs D1 and D2. The precoding P1 is used to perform precoding processing on the data on D1 and then transmitted to the receiving end, and the P1 is used to preprocess the DMRS signal on the first port of the second REG before sending to the receiving end.

The receiving end receives the data of the 2 first REGs and the DMRS signals on the 2 DMRS ports, and independently performs channel estimation on the received demodulation reference pilot signal DMRS of the kth DMRS port group, and uses the estimated channel as the kth The first REG performs data detection, k=1,2.

Here, what is transmitted in the REG is data, and the enhanced downlink control channel ePDCCH information can also be transmitted. The process and flow are the same as the way of transmitting data, as long as the transmission data is changed to ePDCCH. I won't repeat it here.

Embodiment 5: Determining the number of REs of the second REG according to the number K of the first REG and the number P of the second REG, and the situation of time-frequency division port

For the sender:

In order to transmit data to the same receiving end, the sending end divides each PRB of the transmission data into K first REGs D1,..., DK, as shown in A, B, C, and D in Figure 11, divides the first REG As a schematic diagram of K=2, 3, 4, 6, of course there are other similar division methods, which are not listed here. Each first REG uses independent precoding to process the data or ePDCCH and transmit it to the receiving end. In order to allow the receiving end to demodulate and detect these data, the sending end needs to use R DMRS REs to transmit DMRS, and divide the R DMRS REs into P second REGs R1,...,RP, as shown in Figures 12-14, A, B, C, and D in Fig. 12 respectively represent the situation of converting 12 DMRS REs into P=2, 3, 4, and 6 second REGs, and A, B, C, and D in Fig. 13 represent respectively transforming 24 DMRS REs In the case of REs forming P=2, 3, 4, and 6 second REGs, A, B, C, and D in Figure 14 respectively indicate that 24 DMRS REs are formed into P=4, 6, 8, and 12 second REGs Of course, there are other division methods, which will not be described one by one here. Divide P second REGs so that the receiving end estimates the channel according to the received DMRS information on the P second REGs to demodulate the data of K REGs, where K and P are positive integers greater than 1, and K is greater than equal to P. The i-th second REG of the second REG includes r _i DMRS REs, including L _i DMRS ports sharing the r _i DMRS REs through OCC, i=1,...,P.

A relatively special method for dividing the second REG is P=K, that is, there are K first REGs and K second REGs, and each RE group of the second REG includes an equal number of REs, which is r=12/ P, each REG has L=2 DMRS ports. In the case where the number R of DMRS REs is 12, corresponding to port7 and port8 of LTE/LTE A, these two ports share the r REs through OCC, and each port uses r REs of the corresponding REG , that is, there are a total of P groups port7 and port8. The ports of the second REG in different groups can also be renumbered to form P*L ports in total. For example, the port number corresponding to the i-th group R _i is port(2i-1) and port 2i, i=1, . . . , P. Or when the number of DMRS REs R is 24, the number of DMRSs included in each REG group is 24/P REs when N is less than 3, and each REG group has 2 ports, or LTE/LTE A port 7 or port 8, these two ports share the r REs through OCC, or port 9 or port 10 of LTE/LTEA, these two ports share the r REs through OCC, and Each port is only in the RE of the REG where it is located, and there are a total of P groups of port 7/port 8 or port 9/port 10; of course, it is also possible to renumber the ports of the P second REG, and there are a total of 2P ports, for example The port numbers corresponding to the i-th group R _i are port(2i-1) and port 2i, i=1,...,P. When N is greater than 2, each second REG has N ports sharing a group of REs. For example, when N=4, port7 and port8 share r/2 REs of the REG group through OCC, and port9 Share r/2 REs of the REG group with port10 through OCC. For example, when N>4, corresponding to ports 7, 8, 11, and 13 of LTE/LTE A, these four ports share the r/2 REs through OCC, or ports 9, 10, 12, and 14. The 4 ports share the r/2 REs through OCC. For the other N, please refer to the DMRS number of LTE/LTE A, and each port only uses the corresponding 12/P REs in the REG.

The sending end uses the precoding Pi to precode the data of the first REG D _i of the _i -th group and then transmits it to the user, and uses Pi to precode the DMRS signal of the _i -th second REG R _i and then transmits it to the receiving end , P _i is a matrix of Nt*N columns, and Nt is the number of transmitting antennas/elements/ports. When R=12, the value of K=P includes but not limited to 2, 3, 4, 6, and the corresponding RE number of each REG is 12/P. When R=24, and N=1, the value of K=P includes but not limited to 4, 6, 8, 12, and the corresponding RE number of each REG is 12/P, when R=24 , and when N=2, the value of K=P includes but not limited to 2, 3, 4, 6, and the number of REs corresponding to each REG is 12/P. When N>4, K= The value of P includes but is not limited to K=P=3, and the number of REs in each REG is 4.

The receiving end receives the data transmitted by the K first REGs and the DMRS signals transmitted by the K second REGs, and uses the DMRS signal on the RE corresponding to the j-th port of the i-th second REG to estimate the i-th REG A channel for the data of the jth layer on the REG, and perform data detection on it, i=,...,P, j=1,...,N. When R=12, the value of K=P includes but not limited to 2, 3, 4, 6, and the corresponding RE number of each REG is 12/P. When R=24, and N=1, the value of K=P includes but not limited to 4, 6, 8, 12, and the corresponding RE number of each REG is 12/P, when R=24 , and when N=2, the value of K=P includes but not limited to 2, 3, 4, 6, and the number of REs corresponding to each REG is 12/P. When N>4, K= The value of P includes but is not limited to K=P=3, and the number of REs in each REG is 4.

Here, the port numbers of port7-port 14 are only one of the embodiments, and other port numbers, such as port1-port 7, can also be used. The operation steps are similar, and they are not listed here.

Here, the i-th second REG corresponds to the demodulated pilot signal of the i-th first REG, which is only one embodiment, as shown in (A) in FIG. 15 . There may also be other corresponding relationships, as shown in (A) of FIG. 16 , the i-th second REG corresponds to the demodulated pilot signal of the P-i+1-th first REG, which are not listed here.

Here, what is transmitted in the REG is data, and the enhanced downlink control channel ePDCCH information can also be transmitted. The process and flow are the same as the way of transmitting data, as long as the transmission data is changed to ePDCCH. I won't repeat it here.

Embodiment 6: The number of REs of the second REG is determined according to the number K of the first REG and the number P of the second REG. In the case of time-frequency + space domain division port, there are only 12 DMRS REs in one PRB.

For the sender:

In order to transmit data to the same receiving end, the transmitting end divides each PRB of the transmitting data into K first REGs D1,..., DK, as shown in A, B, C, and D in FIG. 11 , divides the first REG into A schematic diagram of K=2, 3, 4, 6, of course there are other similar division methods, which are not listed here. Each first REG uses independent precoding to process the data or ePDCCH and transmit it to the receiving end. In order to allow the receiving end to demodulate and detect these data, the sending end needs to use R DMRS REs to transmit DMRS, and divide the R DMRS REs into P second REGs R1,...,RP, as shown in Figures 12-14, A, B, C, and D in Fig. 12 respectively represent the situation of converting 12 DMRS REs into P=2, 3, 4, and 6 second REGs, and A, B, C, and D in Fig. 13 represent respectively transforming 24 DMRS REs In the case of REs forming P=2, 3, 4, and 6 second REGs, A, B, C, and D in Figure 14 respectively indicate that 24 DMRS REs are formed into P=4, 6, 8, and 12 second REGs Of course, there are other division methods, which will not be described one by one here. Divide P second REGs so that the receiving end estimates the channel according to the received DMRS information on the P second REGs to demodulate the data of K REGs, where K and P are positive integers greater than 1, and K is greater than equal to P. The i-th second REG of the second REG includes r _i DMRS REs, including L _i DMRS ports sharing the r _i DMRS REs through OCC, i=1,...,P.

In this embodiment, K>=P, that is, there are K first REGs and P second REGs, and each RE group of the second REGs includes an equal number of REs. In the case where the number R of DMRS REs is 12 Below, r=12/P, each REG has L=2 DMRS ports. Corresponding to port7 and port8 of LTE/LTE A, these two ports share the r REs through OCC, and each port uses r REs of the REG where it is located, that is, there are P groups of port7 and port8 in total. The ports of the second REG in different groups can also be renumbered to form P*2 ports in total. For example, the port numbers corresponding to the i-th group R _i are port(2i-1) and port 2i, i=1,...,P.

When N=1, the sender uses precoding P _i to precode the data of the first REG D _i of the i-th group and then transmits it to the user, i=1,...,K, use P2j-1 and P2j respectively to The DMRS signals on the first and second DMRS ports of the jth second REG Rj are precoded and then transmitted to the receiving end, P _i is a matrix of Nt*1 columns, and Nt is the number of transmitting antennas/elements/ports , i=1,..., K, j=1,..., P, here, K=2P, the value of P includes but not limited to 2, 3, 4, 6, and the number of REs corresponding to each REG is 12/P, including the following values:

P=2, K=4, L=6, or P=3, K=6, L=4, or P=4, K=8, L=3, or P=6, K=12, L=2 .

When N=2, the sending end uses precoding P _i to precode the data of the first REG D _i of the i-th group and then transmits it to the user, and uses the j-th column of P _i to encode the data of the i-th second REG R _i The DMRS signal on the jth DMRS port is precoded and then transmitted to the receiving end, P _i is a matrix of Nt*2 columns, and Nt is the number of transmitting antennas/elements/ports. Here, i=1,..., P, j=1, 2, K=P, the value of P includes but not limited to 2, 3, 4, 6, and the number of REs corresponding to each REG is 12/P , including the following values:

P=2, K=2, L=6, or P=3, K=3, L=4, or P=4, K=4, L=3, or P=6, K=6, L=2 .

The receiving end receives the data transmitted by the K first REGs and the DMRS signals transmitted by the P second REGs. When N=1, use the DMRS signal on the RE corresponding to the jth port of the ith second REG to estimate the channel of the data on the 2*i-2+jth first REG, and perform Data detection, here, i=1,..., P, j=1, 2, K=2P, the value of P includes but not limited to 2, 3, 4, 6, and the number of REs corresponding to each REG is 12/P. That is, the following values are included:

P=2, K=4, L=6, or P=3, K=6, L=4, or P=4, K=8, L=3, or P=6, K=12, L=2 .

When N=2, use the DMRS signal on the RE corresponding to the j-th port of the i-th second REG to estimate the channel of the j-th layer data on the i-th first REG, and perform data detection on it, Here, i=1,..., K, j=1, 2, ceil is the upper integer function, K=P, the value of P includes but not limited to 2, 3, 4, 6, corresponding to each REG The number of REs is 12/P. That is, the following values are included:

P=2, K=2, L=6, or P=3, K=3, L=4, or P=4, K=4, L=3, or P=6, K=6, L=2 .

Here, the port numbers of port7-port 14 are only one of the embodiments, and other port numbers, such as port1-port 7, can also be used. The operation steps are similar, and they are not listed here.

Here, the correspondence between the i-th group of REGs of the first REG and the j-th group of REGs of the second REG can be arbitrary, and is not limited to the correspondence in this embodiment, as shown in FIG. 15 and FIG. 16 , in FIG. 15 ( A) K=P and the i-th second REG group R _i corresponds to the i-th first REG D _i , and demodulation is performed. In Fig. 15 (B), the first port and the second port of the i-th second REG group R _i correspond to the 2i-1 first REG D2i-1 and the 2i-1 first REG D2i respectively , and provide channel estimation and demodulation for it. In (A) of FIG. 16 , K=P and the i-th second REG group R _i corresponds to DK-i+1 of the K-i+1-th first REG, and provides channel estimation and data demodulation for it. (B) in Fig. 16 shows that the first port and the second port of the P-i+1th second REG group RP-i+1 are connected with the K-2i-1th first REG D2i-1 and the K-2i-1th REG D2i-1 respectively. The 2i-1 first REGs D2i correspond to, and provide channel estimation and data demodulation for them.

Here, what is transmitted in the REG is data, and the enhanced downlink control channel ePDCCH information can also be transmitted. The process and flow are the same as the way of transmitting data, as long as the transmission data is changed to ePDCCH. I won't repeat it here.

Embodiment 7: The number of REs of the second REG is determined according to the number K of the first REG and the number P of the second REG. In the case of time-frequency + space domain division port, there are only 24 DMRS REs in one PRB

For the sender:

In order to transmit data to the same receiving end, the sending end divides each PRB of the transmission data into K first REGs D1,..., DK, as shown in A, B, C, and D in Figure 11, divides the first REG As a schematic diagram of K=2, 3, 4, 6, of course there are other similar division methods, which are not listed here. Each first REG uses independent precoding to process the data or ePDCCH and transmit it to the receiving end. In order to enable the receiving end to demodulate and detect these data, the sending end needs to use R DMRS REs to transmit DMRS, and divide the R DMRS REs into P second REGs R1,...,RP, as shown in Figures 12-14, A, B, C, and D in Fig. 12 respectively represent the situation of converting 12 DMRS REs into P=2, 3, 4, and 6 second REGs, and A, B, C, and D in Fig. 13 represent respectively transforming 24 DMRS REs In the case of REs forming P=2, 3, 4, and 6 second REGs, A, B, C, and D in Figure 14 respectively indicate that 24 DMRS REs are formed into P=4, 6, 8, and 12 second REGs Of course, there are other division methods, which will not be described one by one here. Divide P second REGs so that the receiving end estimates the channel according to the received DMRS information on the P second REGs to demodulate the data of K REGs, where K and P are positive integers greater than 1, and K is greater than equal to P. The i-th second REG of the second REG includes r _i DMRS REs, including L _i DMRS ports sharing the r _i DMRS REs through OCC, i=1,...,P.

In this embodiment, K>=P, that is, there are K first REGs and P second REGs, and each RE group of the second REGs includes an equal number r of REs, and the number R of DMRS REs is 24 In this case, when N is less than 3, the number of DMRSs included in each REG group is 24/P REs, and each REG group has 2 ports, either LTE/LTE A port 7 or port8, and these two ports pass The r REs are shared by OCC, either port 9 or port 10 of LTE/LTE A. These two ports share the r REs by OCC, and each port is only in the REG where it is located. In the RE, there are a total of P groups of port 7/port 8 or port 9/port 10; of course, the ports of the P second REG can also be renumbered, and there are a total of 2P ports. For example, the port number corresponding to the i-th group R _i is port(2i-1) and port 2i, i=1, . . . , P. When N is greater than 2, each second REG has N ports sharing a group of REs. For example, when N=4, port7 and port8 share r/2 REs of the REG group through OCC, and port9 Share r/2 REs of the REG group with port10 through OCC. For example, when N>4, corresponding to ports 7, 8, 11, and 13 of LTE/LTE A, these four ports share the r/2 REs through OCC, or ports 9, 10, 12, and 14. The 4 ports share the r/2 REs through OCC. For the other N, please refer to the DMRS number of LTE/LTE A, and each port only uses the corresponding 12/P REs in the REG.

When N=1, the sender uses precoding P _i to precode the data of the first REG D _i of the i-th group and then transmits it to the user, i=1,...,K, use P2j-1 and P2j respectively to The DMRS signals on the first and second DMRS ports of the jth second REG Rj are precoded and then transmitted to the receiving end, P _i is a matrix of Nt*1 columns, and Nt is the number of transmitting antennas/elements/ports , i=1,...,K, j=1,...,P. Here, K=2P, and the value of P includes but is not limited to values 2, 4, 6, 8, and 12. The number of REs corresponding to each REG is 24/P, which includes the following values:

K=4, P=2, r=12, or K=8, P=4, r=6, or K=12, P=6, r=4, or K=16, P=8, r=3 , or K=24, P=12, r=2.

When N=2, the sending end uses precoding P _i to precode the data of the first REG D _i of the i-th group and then transmits it to the user, and uses the j-th column of P _i to encode the data of the i-th second REG R _i The DMRS signal on the jth DMRS port is precoded and then transmitted to the receiving end, P _i is a matrix of Nt*2 columns, and Nt is the number of transmitting antennas/elements/ports. Here, i=1,...,P, j=1, 2, K=P, the value of P includes but not limited to 4, 6, 8, 12, and the number of REs corresponding to each REG is 24/P , including the following values:

K=4, P=4, r=6, or K=6, P=6, r=4, or K=8, P=8, r=3, or K=12, P=12, r=2 .

When N=3 or 4, the sending end uses the precoding P _i to precode the data of the first REG D _i of the i-th group and then transmits it to the user, and uses the j-th column of P _i to encode the data of the i-th second REG D i The DMRS signal on the jth DMRS port of _i is precoded and then transmitted to the receiving end, P _i is a matrix of Nt*N columns, and Nt is the number of transmitting antennas/elements/ports. Here, i=1,..., P, j=1, 2,..., N, K=P, the value of P includes but not limited to 2, 3, 4, 6, corresponding to the number of REs of each REG It is 12/P, which includes the following values:

K=2, P=2, r=6, or K=3, P=3, r=4, or K=4, P=4, r=3, or K=6, P=6, r=2 .

When N>4, the sender uses precoding P _i to precode the data of the first REG D _i of the i-th group and then transmits it to the user, and uses the j-th column of P _i to encode the data of the i-th second REG R _i The DMRS signal on the jth DMRS port is precoded and then transmitted to the receiving end, P _i is a matrix of Nt*N columns, and Nt is the number of transmitting antennas/elements/ports. Here, i=1,..., P, j=1, 2,..., N, K=P, the value of P includes but not limited to 3, and the number of REs corresponding to each REG is 12/P, namely Including the following values: K=3, P=3, r=4

The receiving end receives the data transmitted by the K first REGs and the DMRS signals transmitted by the P second REGs. When N=1, use the DMRS signal on the RE corresponding to the jth port of the ith second REG to estimate the channel of the data on the 2i-2+jth first REG, and perform data detection on it , here, i=1, ..., P, K=2P, the value of P includes but not limited to 2, 4, 6, 8, 12, and the number of REs corresponding to each REG is 12/P. That is, the following values are included:

P=2, K=4, L=6, or P=3, K=6, L=4, or P=4, K=8, L=3, or P=6, K=12, L=2 .

When N=2, use the DMRS signal on the RE corresponding to the j-th port of the i-th second REG to estimate the channel of the j-th layer data on the i-th first REG, and perform data detection on it, Here, i=1,..., K, j=1, 2, K=P, the value of P includes but not limited to 4, 6, 8, 12, and the number of REs corresponding to each REG is 24/P . That is, the following values are included:

K=4, P=4, r=6, or K=6, P=6, r=4, or K=8, P=8, r=3, or K=12, P=12, r=2 .

When N=3 or 4, use the DMRS signal on the RE corresponding to the j-th port of the i-th second REG to estimate the channel of the j-th layer data on the i-th first REG, and perform Data detection, here, i=1,..., K, j=1,..., N, K=P, the value of P includes but not limited to 2, 34, 6, and the number of REs corresponding to each REG is 12/P. That is, the following values are included:

K=2, P=2, r=6, or K=3, P=3, r=4, or K=4, P=4, r=3, or K=6, P=6, r=2 .

When N>4, use the DMRS signal on the RE corresponding to the j-th port of the i-th second REG to estimate the channel of the j-th layer data on the i-th first REG, and perform data detection on it, Here, i=1, . . . , K, j=1, . That is, the following values are included: K=3, P=3, r=4.

Here, the port numbers of port7-port 14 are only one of the embodiments, and other port numbers, such as port1-port 7, can also be used. The operation steps are similar, and they are not listed here.

Here, the correspondence between the i-th group of REGs of the first REG and the j-th group of REGs of the second REG can be arbitrary, and is not limited to the correspondence in this embodiment, as shown in FIG. 15 and FIG. 16 , in FIG. 15 ( A) K=P and the i-th second REG group R _i corresponds to the i-th first REG D _i , and demodulation is performed. In Fig. 15 (B), the first port and the second port of the i-th second REG group R _i correspond to the 2i-1 first REG D2i-1 and the 2i-1 first REG D2i respectively , and provide channel estimation and demodulation for it. In (A) of FIG. 16 , K=P and the i-th second REG group R _i corresponds to DK-i+1 of the K-i+1-th first REG, and provides channel estimation and data demodulation for it. (B) in Fig. 16 shows that the first port and the second port of the P-i+1th second REG group RP-i+1 are connected with the K-2i-1th first REG D2i-1 and the K-2i-1th REG D2i-1 respectively. The 2i-1 first REGs D2i correspond to, and provide channel estimation and data demodulation for them.

Here, what is transmitted in the REG is data, and the enhanced downlink control channel ePDCCH information can also be transmitted. The process and flow are the same as the way of transmitting data, as long as the transmission data is changed to ePDCCH. I won't repeat it here.

It should be noted that each of the above-mentioned modules can be implemented by software or hardware. For the latter, it can be implemented in the following manner, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned modules are respectively located in multiple in the processor.

The embodiment of the invention also provides a storage medium. Optionally, in this embodiment, the above-mentioned storage medium may be configured to store program codes for performing the following steps:

S11, divide M DMRS ports into K DMRS port groups, K and M are positive integers, and K is less than or equal to M;

S12. Use independent precoding to transmit the DMRS on each DMRS port group.

Optionally, the storage medium is also configured to store program codes for performing the following steps:

S21. Receive the DMRS of M demodulation reference signal DMRS ports, and divide the M demodulation reference signal DMRS ports into K DMRS port groups;

S22. Use the DMRS on each DMRS port group to independently perform channel estimation and/or information demodulation, where M and K are positive integers, and K is less than or equal to M.

Optionally, the storage medium is also configured to store program codes for performing the following steps:

S31. Determine the number K of the first REG and the number P of the second REG in the PRB pair, where K and P are positive integers and K≥P;

S32. Transmit the first information in the K first REGs, and transmit the second information in the P second REGs.

Optionally, the storage medium is also configured to store program codes for performing the following steps:

S41. Receive first information transmitted by K first REGs and second information transmitted by P second REGs of a physical resource block PRB pair, where K and P are positive integers, and K is greater than or equal to P;

S42. Independently perform channel estimation on the second information on the P second REGs, and perform information demodulation on the first information on the K first REGs.

Optionally, in this embodiment, the above-mentioned storage medium may include but not limited to: U disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), mobile Various media that can store program codes, such as hard disks, magnetic disks, or optical disks.

Optionally, in this embodiment, the processor executes the above S11-S12 according to the program code stored in the storage medium.

Optionally, in this embodiment, the processor executes the above S21-S22 according to the program code stored in the storage medium.

Optionally, in this embodiment, the processor executes the above S31-S32 according to the program code stored in the storage medium.

Optionally, in this embodiment, the processor executes the above S41-S42 according to the program code stored in the storage medium.

Optionally, for specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiments and optional implementation manners, and details are not repeated in this embodiment.

Obviously, those skilled in the art should understand that each module or each step of the above-mentioned present invention can be realized by a general-purpose computing device, and they can be concentrated on a single computing device, or distributed in a network formed by multiple computing devices Alternatively, they may be implemented in program code executable by a computing device so that they may be stored in a storage device to be executed by a computing device, and in some cases in an order different from that shown here The steps shown or described are carried out, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps among them are fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (39)

1. A method for transmitting information, comprising: Divide the M demodulation reference signal DMRS ports into K DMRS port groups, the K and the M are positive integers, and K is less than or equal to M; The DMRS is transmitted on each of the DMRS port groups using independent precoding. 2. The method according to claim 1, wherein, before the M DMRS ports are divided into the K DMRS port groups, further comprising: Determine the M, the K, and a channel rank N, where the N is a positive integer. 3. The method according to claim 2, wherein determining said M, said K, and channel rank N comprises: The K is determined according to the N and the M; or, the N is determined according to the K and the M; or, the M is determined according to the K and the N; wherein, K* N≤M. 4. The method according to claim 3, wherein when the N=1 or the N=2, M=N*K. 5. The method according to claim 1, wherein each DMRS port in the DMRS port group includes 12 resource elements (RE). 6. The method according to claim 1, wherein the value of K is determined by the number of REGs divided by REs used to transmit information on the PRB pair where the M DMRS ports are located. 7. The method according to claim 1 or 6, further comprising: Divide the REs used to transmit information on the PRB pairs where the M DMRS ports are located into K REGs, and use independent precoding to transmit information on the K REGs. 8. The method according to claim 7, wherein the information transmitted in each REG comprises: data and/or control channel information. 9. The method according to claim 1 or 7, wherein each DMRS port group in the K DMRS port groups, and the REG corresponding to each DMRS port group in the K REGs , using the same precoding. 10. A method for receiving information, comprising: receiving the DMRS of M demodulation reference signal DMRS ports, and dividing the M demodulation reference signal DMRS ports into K DMRS port groups; Channel estimation and/or information demodulation are performed independently by using the DMRS on each DMRS port group, M and K are positive integers, and K is less than or equal to M. 11. The method according to claim 10, wherein, before the M DMRS ports are divided into the K DMRS port groups, the method further comprises: Determine the M, the K, and the received channel rank N, where the N is a positive integer. 12. The method according to claim 11, wherein determining said M, said K, and channel rank N comprises: The K is determined according to the N and the M; or, the N is determined according to the K and the M; or, the M is determined according to the K and the N; wherein, K* N≤M. 13. The method according to claim 12, wherein when the N=1 or the N=2, M=N*K. 14. The method according to claim 10, wherein each DMRS port in the DMRS port group includes 12 resource elements (RE). 15. The method according to claim 10, wherein the value of K is determined by the number of resource element groups (REGs) divided by REs used to transmit information on the PRB pair where the M DMRS ports are located. 16. The method according to claim 10 or 15, wherein the information transmitted on the PRB pairs where the M DMRS ports are located is received, and the information transmitted on the PRB pairs where the M DMRS ports are located is used to transmit the information The REs of the above information are divided into K REGs. 17. The method according to claim 16, wherein the information transmitted in the REG comprises: data and/or control channel information. 18. The method according to claim 10 or 16, characterized in that, using the DMRS on each of the DMRS port groups to independently perform information demodulation comprises: Each DMRS port group in the K DMRS port groups performs information demodulation on a REG corresponding to each DMRS port group in the K REGs. 19. The method according to claim 10, wherein the channel rank N comprises at least one of the following: number of data transmission layers, number of data transmission streams, number of data streams, number of data layers, channel Rank , rank, number of control channel transport layers, number of control channel transport streams, number of control channel streams, number of control channel layers, number of transport layers, number of transport streams, number of streams, number of layers, precoding column number. 20. A method for transmitting information, comprising: Determine the number K of the first REG and the number P of the second REG in the physical resource block PRB pair, where the K and the P are positive integers and K≥P; The first information is transmitted in the K first REGs, and the second information is transmitted in the P second REGs. 21. The method according to claim 20, wherein the first information includes: data and/or control channel information, and the second information includes: pilot information. 22. The method according to claim 20 or 21, wherein transmitting the first information in the K first REGs and transmitting the second information in the P second REGs comprises: The K first REGs use independent precoding to transmit the first information, and the P second REGs use independent precoding to transmit the second information. 23. The method according to claim 20, wherein before transmitting the first information in the K first REGs and transmitting the second information in the P second REGs, the method further comprises : Dividing the PRB into the K first REGs and/or the P second REGs. 24. The method according to claim 20, wherein the first REG is a resource element RE group used to transmit the first information in the PRB pair, and the second REG is a resource element group of the PRB pair A resource element RE group used to transmit the second information. 25. The method according to claim 20, wherein the i-th second REG R _i includes r _i REs, and L _i DMRS ports share the r _i REs, where i , r _i and L _i are positive integers, and 1≤i≤P. 26. The method according to claim 25, wherein the L _i =L, wherein the L is determined by the channel rank N, L, N and i are positive integers and 1≤i≤P. 27. The method according to claim 26, wherein when the N=1 or 2, the L=2; when the N is greater than 2, the L=N. 28. The method according to claim 26, wherein the first REG number K, the second REG number P, and the DMRS port number L of each second REG satisfy the relationship: K*N=P *L. 29. The method according to claim 26, characterized in that, when said N=1, K=2P, wherein, said N=1, when P=1, K=2; when said N>1 , K=P. 30. The method according to claim 20, wherein the i-th second REG R _i contains the number of REs r _i =r, wherein the r is determined by the channel rank N, and r and i are positive Integer, 1≤i≤P. 31. The method according to claim 30, wherein when the N=1 or 2, the r=R/P, wherein R is the total number of REs transmitting DMRS in the PRB pair , the R is a positive integer; when the N is greater than 2, the r=12/P. 32. The method of claim 31 wherein, When the N=1 and the total number of REs used to transmit DMRS in the PRB pair is 12, the number K of the first REGs, the number P of the second REGs, the number of the second REGs The value of the RE number r included in the REG includes the following combinations: K=2, P=1, r=12, or K=4, P=2, r=6, or K=6, P=3, r= 4, or K=8, P=4, r=3, or K=12, P=6, r=2; or, When the N=2 and the total number of REs used to transmit DMRS in the PRB pair is 12, the number K of the first REGs, the number P of the second REGs, the number of the second REGs The value of the RE number r=12/P contained in the REG includes the following combinations: K=2, P=2, r=6, or K=3, P=3, r=4, or K=4, P= 4, r=3, or K=6, P=6, r=2; or, When the N=1 and the total number of REs used to transmit DMRS in the PRB pair is 24, the number K of the first REGs, the number P of the second REGs, the number of the second REGs The value of the RE number r=24/P contained in the REG includes the following combinations: K=4, P=2, r=12, or K=8, P=4, r=6, or K=12, P= 6, r=4, or K=16, P=8, r=3, or K=24, P=12, r=2; or, When the N=2 and the total number of REs used to transmit DMRS in the PRB pair is 24, the number K of the first REGs, the number P of the second REGs, the number of the second REGs The value of the RE number r=24/P contained in the REG includes the following combinations: K=4, P=4, r=6, or K=6, P=6, r=4, or K=8, P= 8, r=3, or K=12, P=12, r=2; or, When the N=3 or 4, and the total number of REs used to transmit DMRS in the PRB pair is 24, the first REG number K, the second REG number P, the The value of the number of REs included in the second REG r=12/P includes the following combinations: K=2, P=2, r=6, or K=3, P=3, r=4, or K=4, P=4, r=3, or K=6, P=6, r=2; or, When N>4, and the total number of REs used to transmit DMRS in the PRB pair is 24, the number K of the first REGs, the number P of the second REGs, the number of the second REGs The value of the number of REs included in the REG r=12/P includes the following combinations: K=3, P=3, r=4. 33. The method according to any one of claims 26 to 32, wherein the channel rank N includes at least one of the following: the number of data transmission layers, the number of data transmission streams, the number of data streams, the number of data Number of layers, channel Rank, rank, number of control channel transmission layers, number of control channel transmission flows, number of control channel flows, number of control channel layers, number of transmission layers, number of transmission flows, number of flows, layers number, the number of precoded columns. 34. A method for receiving information, comprising: Receive the first information transmitted by the K first REGs and the second information transmitted by the P second REGs of the physical resource block PRB pair, where K and P are positive integers, and K≥P; Independently perform channel estimation on the second information on the P second REGs, and perform information demodulation on the first information on the K first REGs. 35. The method according to claim 34, wherein the first information includes: data and/or control channel information, and the second information includes: pilot information. 36. An information transmission device, comprising: The first dividing module is used to divide the M demodulation reference signal DMRS ports into K DMRS port groups, the K and the M are positive integers, and K is less than or equal to M; The first transmission module is configured to use independent precoding to transmit DMRS on each of the DMRS port groups. 37. An information receiving device, comprising: The second dividing module is used to receive DMRSs of M demodulation reference signal DMRS ports, and divide the M demodulation reference signal DMRS ports into K DMRS port groups; The first demodulation module is used to independently perform channel estimation and/or information demodulation using the DMRS on each of the DMRS port groups, M and K are positive integers, and K is less than or equal to M. 38. An information transmission device, comprising: A determining module, configured to determine the number K of the first REG and the number P of the second REG in the physical resource block PRB pair, wherein the K and the P are positive integers and K≥P; The second transmission module is configured to transmit the first information in the K first REGs, and transmit the second information in the P second REGs. 39. An information receiving device, comprising: A receiving module, configured to receive the first information transmitted by the K first REGs and the second information transmitted by the P second REGs of the physical resource block PRB pair, wherein the K and the P are positive integers, and K≥P; The second demodulation module is configured to independently perform channel estimation on the second information on the P second REGs, and perform information demodulation on the first information on the K first REGs.