WO2016145952A1 - Processing method and apparatus for channel state measurement pilot frequency - Google Patents

Abstract

The present invention provides a processing method and apparatus for channel state measurement pilot frequency, wherein the method also comprises that: a base station divides the channel state measurement pilot frequency into a specified number of groups, wherein the channel state measurement pilot frequency is a predetermined number of dimensions and the predetermined number is antenna number of the base station; the base station sends the channel state measurement pilot frequency to a terminal respectively according to the specified number of groups, wherein the channel state measurement pilot frequency is used to instruct the terminal to perform channel measurement; the base station receives the channel state information fed back by the terminal, wherein the channel state information is used to instruct the base station to perform pre-coding processing on the terminal. By the present invention, solved is the problem in related art of limitation on channel measurement performance caused by fractal dimension measurement and feedback, and further achieved is the effect of better use of the resources obtained from competition.

Description

Channel state measurement pilot processing method and device Technical field

The present invention relates to the field of communications, and in particular to a method and apparatus for processing channel state measurement pilots.

Background technique

In a wireless communication system, a transmitting end and a receiving end use a plurality of antennas to obtain a higher rate in a spatial multiplexing manner. Compared with the general spatial multiplexing method, an enhanced technology is that the receiving end feeds back channel information to the transmitting end, and the transmitting end uses some transmitting precoding techniques according to the obtained channel information, which can greatly improve the transmission performance. For single-user multi-input multi-output (MIMO), channel feature vector information is used for precoding directly; for multi-user MIMO, more accurate channel information is needed.

In the Long Term Evolution (LTE) scheme, the downlink reference signals are classified into a Cell-specific Reference Signal (CRS) and a mobile station-specific reference signal (UE-specific Reference). Signal, referred to as DMRS, CSI Reference Signal (CSI-RS), Positioning Reference Signal (PRS), MBSFN-RS, etc.

The CRS is a public pilot, which is transmitted in full bandwidth for channel measurement and demodulation, and the CRS pilot dimension corresponds to the number of antenna ports; the DMRS is used for proprietary pilots, is unique to each user, and is transmitted in part of the bandwidth. For user data demodulation, DMRS pilot dimension corresponds to the number of layers of transmitted data; CSI-RS is channel state information pilot, is public, is transmitted in full bandwidth, is used to measure channel state, CSI-RS guide The frequency dimension corresponds to the number of antenna ports, and the number of transmitting antennas is Nt, and the base station transmits an Nt-dimensional CSI-RS.

The CRS is a measurement and demodulation pilot, which is Cell Special, transmits in full bandwidth, and the UE performs channel measurement with the received CRS, and measures channel quality indication (CQI) information, PMI, and rank indication of the current channel. (Rank Indicator, RI for short), and feedback; the UE can also use the received CRS for data demodulation to obtain the data information required by the UE. The CSI-RS is used to measure channel status information and is Cell Special's, which is transmitted at full bandwidth. The CSI-RS is used to measure CQI information, PMI information, and RI information. Compared with CRS, the pilot density of CSI-RS is much lower, and the average RB has only one RE overhead. The DMRS is a demodulation pilot transmitted on the PDSCH and is UE Special. The DMRS signal is precoded together with the user's data. When the user receives the DMRS signal, the channel information and the precoding information can be obtained, thereby demodulating the data.

In the Long Term Evolution (LTE) program, the feedback of channel information is mainly The simpler single codebook feedback method is utilized, and the performance of the MIMO transmit precoding technique mainly depends on the accuracy of the codebook feedback.

The basic principle of quantized feedback of channel information based on codebook is briefly described as follows:

Assuming that the limited feedback channel capacity is Bbps/Hz, the number of available codewords is N=2 ^B. The eigenvector space of the channel matrix is quantized to form the codebook space

The transmitter and the receiver jointly save or generate the codebook in real time (same as the transceiver). The receiving end according to the obtained channel matrix H, through certain criteria

Select a codeword that best matches the channel

The feature vector information of the channel is represented, and the codeword number i is fed back to the transmitting end. Here, the code word number is referred to as a Precoding Matrix Indicator (PMI). The transmitting end finds the corresponding precoding codeword according to the serial number i

Thereby obtaining channel information.

The above is the principle of the codebook feedback technology in LTE. When applying, some more specific feedback methods are involved. In the LTE standard, the minimum feedback unit of the channel information is subband channel information, and one subband is composed of a plurality of resource blocks (Resource Blocks, referred to as RBs), and each RB is composed of multiple resource elements (Resource Element). , referred to as RE), RE is the smallest unit of time-frequency resources in LTE, and LTE-A uses the resource representation method of LTE. Several Subbands can be called Multi-Subbands, and many Subbands can be called Broadband Widebands.

The following describes the feedback content related to the channel information in the LTE. The channel state information (CSI) feedback includes: channel quality indication (CQI) information, PMI, and rank indicator (Rank Indicator, Referred to as RI). Here we are most concerned about PMI information, but RI and CQI are also part of the channel status information feedback.

CQI is an indicator to measure the quality of downlink channels. In the 36-213 protocol, CQI is represented by an integer value of 0 to 15, which respectively represent different CQI levels, and different CQIs correspond to respective modulation modes and code rates (MCS).

The RI is used to describe the number of spatially independent channels, corresponding to the rank (Rank) of the channel response matrix. In the open-loop spatial multiplexing and closed-loop spatial multiplexing mode, the UE needs to feed back RI information, and other modes do not need to feed back RI information. The rank of the channel matrix corresponds to the number of layers.

With the rapid development of wireless communication technology, users' wireless applications are becoming more and more abundant, which has led to the rapid growth of wireless data services. It is predicted that data services will grow at a rate of 1. 6-2 times per year in the next 10 years. This poses a huge challenge to the wireless access network. Multi-antenna technology is a key technology to cope with the explosive growth of wireless data services. Currently, the multi-antenna technology supported in 4G only supports the maximum 8-port horizontal dimension beamforming technology, and has a great potential to further greatly increase system capacity.

Massive MIMO (Massive MIMO) technology is a key enhancement technology in the next generation communication technology. The main features of the Massive MIMO system are: large-scale antenna arrays on the base station side, such as 64 or 128 antennas, and even more, in the data. When transmitting, MU-MIMO technology is used to simultaneously multiplex multiple users at the same frequency. Generally speaking, the ratio of the number of antennas to the number of multiplexed users is maintained at about 5-10 times. It can be proved that the correlation coefficient between the channels of any two users is exponentially attenuated as the number of antennas increases, whether in the strong correlation channel in the line-of-sight environment or the uncorrelated channel under rich scattering, such as when configured on the base station side. When there are 128 antennas, the correlation coefficient between channels of any two users approaches 0, that is, the multi-user corresponding channels are close to orthogonal. On the other hand, large arrays can bring a very large array gain and diversity gain.

For Massive MIMO, due to the introduction of a large number of antennas, the conventional method: each channel transmits a channel measurement pilot CSI-RS, the terminal detects the CSI-RS and obtains a channel matrix corresponding to each transmission resource through channel estimation, according to the channel matrix. Obtain the best transmission layer number information of each frequency domain subband precoding vector and wideband on the baseband, and then feedback based on the pilot measurement technology and codebook feedback technology introduced above. This method is applied in massive MIMO. There are relatively big problems. The main manifestation is that, first, as the number of antennas increases, the pilot overhead becomes larger and larger, and excessive pilot overhead can seriously affect the performance of the system and increase the complexity of the system. Secondly, due to the increase of the number of antennas on the base station side, the base station needs to generate Nt-dimensional pilots for channel measurement, and the terminal side also needs to feed back the Nt-dimensional codebook according to the measurement pilot, and the calculation and measurement complexity is high; FIG. 1 is related. A schematic diagram of a 2D antenna array of a multi-antenna system in the technology, as shown in FIG.

Fractal dimension measurement and feedback is a technique applied to massive MIMO, which requires the base station side to separately transmit the horizontal antenna dimension NtH of the 2D antenna array and the measurement pilot of the vertical antenna dimension Ntv dimension. As shown in Figure 1, the base station transmits 8Tx measurement pilots in horizontal dimensions and 8Tx measurement pilots in vertical dimensions. The terminal respectively receives pilot CSI-RS-h and CSI-RS-v of two different dimensions and measures channel state information of each dimension and feeds back CSIH and CSIv. The base station side synthesizes CSI information of different dimensions into Nt-dimensional CSI information. For example, PMI synthesis can use the Kronecker product form in formula (1):

The base station precodes the terminal using the synthesized full-dimensional CSI information.

Although the related art solves the problem of large pilot overhead and complicated measurement in the massive MIMO, the performance is greatly limited, and the technique is only suitable for the strong correlation channel. However, in the actual channel, the multipath is complicated and there are many influencing factors. Most of the time, the channel is not strongly correlated, so there is a large performance loss when the fractal dimension feedback is applied.

In view of the problem that the measurement performance of the channel is limited due to the fractal dimension measurement and feedback in the related art, an effective solution has not been proposed yet.

Summary of the invention

A main object of the present invention is to provide a method and apparatus for processing channel state measurement pilots to at least solve the problem that the channel measurement performance is limited due to the fractal dimension measurement and feedback in the related art.

According to an aspect of the embodiments of the present invention, a method for processing a channel state measurement pilot is provided, further comprising: the base station dividing the channel state measurement pilot into a specified number group, wherein the channel state measurement pilot is a predetermined number dimension The predetermined number is the number of antennas of the base station; the base station separately sends the channel state measurement pilot to the terminal according to the specified quantity group, where the channel state measurement pilot is used to indicate that the terminal performs a channel The base station receives channel state information that is fed back by the terminal, where the channel state information is used to instruct the base station to perform precoding processing on the terminal, where the specified number of channel state measurement pilots includes a first number of sets of first channel state measurement pilots and a second number of sets of second type channel state measurement pilots; wherein said second number of said second type of channel state measurement pilots are derived from One element or a plurality of elements are respectively selected in each group of the first type of channel state measurement pilots.

Optionally, the number of channel measurement pilots in the specified number of channel state measurement pilots is equal.

Optionally, the sum of the dimensions of the channel state measurement pilots of the specified number of groups is greater than the predetermined number.

Optionally, the sending, by the base station, the channel state measurement pilots to the terminal according to the specified number of groups, respectively: the base station is respectively in the third number of subframes according to the specified number of groups and respectively according to the specified quantity group The terminal transmits the channel state measurement pilot.

Optionally, the sending, by the base station, the channel state measurement pilots to the terminal according to the specified quantity group, respectively: the base station sending, to the terminal, the fourth quantity of resource blocks RB according to the specified quantity group The channel state measurement pilot.

Optionally, the sending, by the base station, the channel state measurement pilots to the terminal according to the specified number of groups, respectively: the base station sending, by using the fifth number of pilot positions, the specified number of groups to the terminal respectively. The channel state measurement pilot.

Optionally, the channel state measurement pilot includes at least one of the following: a channel state information reference signal CSI-RS, and a cell-specific reference signal CRS.

According to still another aspect of the embodiments of the present invention, a method for processing a channel state measurement pilot is provided. The method further includes: receiving, by the terminal, a specified number of channel state measurement pilots sent by the base station, where the channel state measurement pilot is a predetermined number of dimensions, the predetermined number being the number of antennas of the base station; the terminal performing channel measurement according to the channel state measurement pilot, and feeding back channel state information to the base station.

Optionally, the manner in which the terminal receives the specified number of group channel state measurement pilots sent by the base station includes one of the following: the terminal receives the specified number of channel state measurement pilots that are sent by the base station in a third number of subframes. Receiving, by the terminal, the specified number of channel state measurement pilots that are sent by the base station on a fourth number of resource blocks RB; the terminal receiving the that the base station sends the fifth number of pilot locations Specifies the number of sets of channel state measurement pilots.

Optionally, the manner in which the terminal performs channel measurement according to the channel state measurement pilot includes one of: the terminal performs channel measurement on the subframe; and the terminal is in the fourth quantity of resource blocks. Channel measurements are performed on designated RBs in the RB; the terminal performs channel measurements at designated pilot positions in the fifth number of pilot positions.

Optionally, the channel state measurement pilot includes at least one of the following: a channel state information reference signal CSI-RS, and a cell-specific reference signal CRS.

According to still another aspect of the present invention, a processing device for a channel state measurement pilot is provided. The method further includes: a dividing module, configured to divide a channel state measurement pilot into a specified number group, where The channel state measurement pilot is a predetermined number of dimensions, the predetermined number is the number of antennas of the base station, and the sending module is configured to separately send the channel state measurement pilot to the terminal according to the specified quantity group, where the channel state The measurement pilot is used to instruct the terminal to perform channel measurement; the first receiving module is configured to receive channel state information fed back by the terminal, where the channel state information is used to instruct the base station to perform precoding on the terminal Processing, wherein the specified number of group channel state measurement pilots comprises: a first quantity of the first type of channel state measurement pilots and a second quantity of the second type of channel state measurement pilots; wherein the second The second type of channel state measurement pilot of the quantity set is selected by each element from each group of the first type channel state measurement pilots or Elements were grouped.

Optionally, the number of channel measurement pilots in the specified number of channel state measurement pilots is equal.

Optionally, the sum of the dimensions of the channel state measurement pilots of the specified number of groups is greater than the predetermined number.

Optionally, the sending module includes: a first sending unit, configured to separately send the channel state measurement pilot to the terminal according to the specified number of groups on a third number of subframes.

Optionally, the sending module includes: a second sending unit, configured to send the channel state measurement pilot to the terminal according to the specified number group on the fourth number of resource blocks RB.

Optionally, the sending module includes: a third sending unit, configured to send the channel state measurement pilot to the terminal according to the specified number of groups by using a fifth number of pilot positions.

Optionally, the channel state measurement pilot includes at least one of the following: a channel state information reference signal CSI-RS, cell-specific reference signal CRS.

According to still another aspect of the present invention, a processing device for a channel state measurement pilot is provided, which is located at a terminal side, and further includes: a second receiving module, configured to receive a specified number of channel state measurement pilots sent by the base station, where The channel state measurement pilot is a predetermined number of dimensions, the predetermined number is an antenna number of the base station; and an execution module is configured to perform channel measurement according to the channel state measurement pilot, and feed back channel state information to the base station .

Optionally, the second receiving module includes one of: a first receiving unit, configured to receive the specified number of group channel state measurement pilots sent by the base station on a third number of subframes; and a second receiving unit And configured to receive the specified number of channel state measurement pilots sent by the base station on the fourth number of resource blocks RB, and the third receiving unit is configured to receive, by the base station, the fifth number of pilot positions. The specified number of sets of channel state measurement pilots.

Optionally, the execution module includes one of: a first execution unit configured to perform channel measurement on the subframe; and a second execution unit configured to be specified in the fourth number of resource blocks RB The channel measurement is performed on the RB; the third execution unit is configured to perform channel measurement on the designated pilot position in the fifth number of pilot positions.

Optionally, the channel state measurement pilot includes at least one of the following: a channel state information reference signal CSI-RS, and a cell-specific reference signal CRS.

According to the embodiment of the present invention, the base station divides the predetermined number of channel state measurement pilots into a specified number group, and then sends a specified number of channel state measurement pilots to the terminal, and the terminal performs channel measurement according to the received state measurement pilot. The method ensures that the base station can obtain better precoding performance, and solves the problem that the channel measurement performance is limited due to the fractal dimension measurement and feedback in the related art, thereby achieving the effect of better utilizing the competitive resources.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a 2D antenna array of a multi-antenna system in the related art;

2 is a flowchart of a processing method of a channel state measurement pilot according to an embodiment of the present invention;

3 is a flowchart of a processing method of a channel state measurement pilot according to an embodiment of the present invention;

4 is a structural diagram 1 of a processing apparatus for channel state measurement pilot according to an embodiment of the present invention;

FIG. 5 is a second structural block diagram of a processing apparatus for channel state measurement pilot according to an embodiment of the present invention; FIG.

6 is a schematic diagram of a base station transmitting channel state measurement pilots to a terminal on three TTIs according to an alternative embodiment of the present invention;

FIG. 7a is a schematic diagram 1 of a discontinuous TTI of periodic transmission according to an alternative embodiment of the present invention; FIG.

FIG. 7b is a schematic diagram 1 of a discontinuous TTI for aperiodic transmission according to an alternative embodiment of the present invention; FIG.

FIG. 8a is a schematic diagram 2 of a discontinuous TTI of periodic transmission according to an alternative embodiment of the present invention; FIG.

FIG. 8b is a schematic diagram 2 of a discontinuous TTI for aperiodic transmission according to an alternative embodiment of the present invention; FIG.

9 is a schematic diagram of transmitting pilots on an RB according to an alternative embodiment of the present invention;

10 is a schematic diagram of a CSI-RS RE position according to an alternative embodiment of the present invention;

11 is a schematic diagram 1 of a base station transmitting a CSI-RS according to an alternative embodiment of the present invention;

FIG. 12 is a second schematic diagram of a base station transmitting a CSI-RS according to an alternative embodiment of the present invention; FIG.

FIG. 13 is a schematic diagram 3 of a base station transmitting a CSI-RS according to an alternative embodiment of the present invention; FIG.

FIG. 14 is a schematic diagram 4 of a base station transmitting a CSI-RS according to an alternative embodiment of the present invention; FIG.

15 is a schematic diagram 5 of a base station transmitting a CSI-RS according to an alternative embodiment of the present invention;

16 is a schematic diagram of a base station transmitting measurement pilots according to an alternative embodiment of the present invention;

17 is a schematic diagram of a CSI-RS RE position according to an alternative embodiment of the present invention;

FIG. 18a is a third schematic diagram of a continuous TTI of periodic transmission according to an alternative embodiment of the present invention; FIG.

FIG. 18b is a third schematic diagram of a continuous TTI for aperiodic transmission according to an alternative embodiment of the present invention; FIG.

19 is a schematic diagram of transmitting pilots on an RB according to an alternative embodiment of the present invention;

20 is a schematic diagram of a CSI-RS RE position according to an alternative embodiment of the present invention;

21 is a diagram of different 64Tx codebook and channel correlation coefficients in accordance with an alternate embodiment of the present invention.

detailed description

It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

This embodiment provides a method for processing a channel state measurement pilot, and FIG. 2 is a method according to an embodiment of the present invention. A flowchart of a method for processing a channel state measurement pilot, as shown in FIG. 2, the steps of the method include:

Step S202: The base station divides the channel state measurement pilot into a specified number group;

The channel state measurement pilot is a predetermined number of dimensions, where the predetermined number is the number of antennas of the base station;

Step S204: The base station separately sends a channel state measurement pilot to the terminal according to the specified quantity group.

The channel state measurement pilot is used to instruct the terminal to perform channel measurement.

Step S206: The base station receives channel state information fed back by the terminal.

The channel state information is used to indicate that the base station performs precoding processing on the terminal, the first quantity group of the first type channel state measurement pilots and the second quantity group of the second type channel state measurement pilots; wherein, the second quantity group The second type of channel state measurement pilot is composed of one element selected from each of the first type of channel state measurement pilots.

In this embodiment, the base station divides the predetermined number of channel state measurement pilots into a specified number group, and then sends a specified number of channel state measurement pilots to the terminal, and the terminal performs channel measurement according to the received state measurement pilot. The method ensures that the base station can obtain better precoding performance, and solves the problem that the channel measurement performance is limited due to the fractal dimension measurement and feedback in the related art, thereby achieving the effect of better utilizing the competitive resources.

Furthermore, for each of the specified number of groups of channel state measurement pilots in the present embodiment, the number of channel measurement pilots is equal, and the sum of the dimensions of the channel state measurement pilots of the specified number of groups is greater than a predetermined number.

In another optional implementation manner of this embodiment, the manner in which the base station separately sends the channel state measurement pilot to the terminal according to the specified number of groups may be implemented as follows:

Manner 1: The base station sends channel state measurement pilots to the terminal in a predetermined number of cycles and in a specified number of groups on the third number of subframes.

Manner 2: The base station sends channel state measurement pilots to the terminal according to the specified number group on the fourth number of resource blocks RB.

Manner 3: The base station uses the fifth number of pilot positions to respectively send channel state measurement pilots to the terminal according to the specified number of groups.

Optionally, the channel state measurement pilot involved in this embodiment includes at least one of the following: a channel state information reference signal CSI-RS, and a cell-specific reference signal CRS.

FIG. 3 is a flowchart of a method for processing a channel state measurement pilot according to an embodiment of the present invention. As shown in FIG. 3, the steps of the method include:

Step S302: The terminal receives a specified number of channel state measurement pilots sent by the base station;

The channel state measurement pilot is a predetermined number of dimensions, where the predetermined number is the number of antennas of the base station;

Step S304: The terminal performs channel measurement according to the channel state measurement pilot, and feeds back channel state information to the base station.

In this embodiment, the terminal receives the specified number of channel state measurement pilots respectively, and feeds back the channel state information to the base station according to the channel state measurement pilot, so that the terminal can feed back the channel state information to the base station.

The manner in which the terminal involved in the embodiment receives the specified number of channel state measurement pilots sent by the base station may include one of the following:

Manner 1: The terminal receives a specified number of channel state measurement pilots sent by the base station on the third number of subframes;

Manner 2: The terminal receives a specified number of channel state measurement pilots sent by the base station on the fourth number of resource blocks RB;

Manner 3: The terminal receives a specified number of channel state measurement pilots transmitted by the base station at a fifth number of pilot positions.

The manner in which the terminal performs channel measurement according to the channel state measurement pilot may also include one of the following manners based on the manner in which the terminal receives the specified number of channel state measurement pilots sent by the base station:

Manner 1: The terminal performs channel measurement on the subframe;

Manner 2: The terminal performs channel measurement on a specified RB in the fourth number of resource blocks RB;

Manner 3: The terminal performs channel measurement on a designated pilot position in the fifth number of pilot positions.

Optionally, the channel state measurement pilot includes at least one of the following: a channel state information reference signal CSI-RS, and a cell-specific reference signal CRS.

In the embodiment, a processing device for the channel state measurement pilot is further provided, and the device is used to implement the foregoing embodiment and the optional implementation manner, and details are not described herein. As used below, the term "module" "unit" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 4 is a structural diagram of a processing apparatus for a channel state measurement pilot according to an embodiment of the present invention. The apparatus is located at a base station side. As shown in FIG. 4, the apparatus further includes: a dividing module 42 configured to measure a channel state. The frequency is divided into a specified number of groups, wherein the channel state measurement pilot is a predetermined number of dimensions, and the predetermined number is the number of antennas of the base station; the sending module 44 is coupled to the splitting module 42 and configured to respectively send the channel state to the terminal according to the specified number of groups. Measuring a pilot, wherein the channel state measurement pilot is used to instruct the terminal to perform channel measurement; the first reception The module 46 is coupled to the sending module 44 and configured to receive channel state information fed back by the terminal, where the channel state information is used to instruct the base station to perform precoding processing on the terminal.

Optionally, the specified number of channel state measurement pilots includes: a first quantity of the first type of channel state measurement pilots and a second quantity of the second type of channel state measurement pilots; wherein, the first type of channel state One element of each group of measurement pilots is selected to form a second number of groups of channel state measurement pilots. The number of channel measurement pilots in the channel state measurement pilot of the specified number group is equal, and the sum of the dimensions of the channel state measurement pilots of the specified number group is greater than the predetermined number.

The sending module 42 of the present embodiment optionally includes: a first sending unit, configured to respectively send a channel state measurement pilot to the terminal according to a specified number of groups on a third number of subframes; or a second sending unit And sending, according to the specified number of groups, the channel state measurement pilots to the terminal according to the specified number of groups, or the third sending unit, configured to use the fifth number of pilot positions according to the specified number of groups, respectively, to the terminal Transmit channel status measurement pilot.

Optionally, the channel state measurement pilot includes at least one of the following: a channel state information reference signal CSI-RS, and a cell-specific reference signal CRS.

5 is a block diagram of a processing device for a channel state measurement pilot according to an embodiment of the present invention. The device is located on the terminal side. As shown in FIG. 5, the device further includes: a second receiving module 52, configured to receive by the base station. a specified number of channel state measurement pilots, wherein the channel state measurement pilot is a predetermined number of dimensions, the predetermined number is the number of antennas of the base station; and the execution module 54 is coupled to the second receiving module 52 and configured to be measured according to the channel state. The channel measurement is performed and the channel state information is fed back to the base station.

Optionally, the receiving module 52 may include: a first receiving unit configured to receive a specified number of channel state measurement pilots sent by the base station on the third number of subframes; or a second receiving unit configured to receive the base station a specified number of channel state measurement pilots transmitted on the fourth number of resource blocks RB; or a third receiving unit configured to receive a specified number of channel state measurement pilots transmitted by the base station at the fifth number of pilot positions.

Optionally, the execution module 54 may include: a first execution unit configured to perform channel measurement on a subframe; or a second execution unit configured to perform a channel on a designated RB of the fourth number of resource blocks RB Measuring; or, the third execution unit, is configured to perform channel measurement on a designated pilot position in the fifth number of pilot positions.

Optionally, the channel state measurement pilot includes at least one of the following: a channel state information reference signal CSI-RS, and a cell-specific reference signal CRS.

The invention is exemplified below in conjunction with an alternative embodiment of the invention;

The optional embodiment provides a method for processing a channel state measurement pilot. The method in this alternative embodiment includes:

Step S302: The base station eNB sends an Nt-dimensional channel state measurement pilot to the terminal UE, and the base station eNB divides the Nt-dimensional channel state measurement pilot into M groups and sends them to the terminal UE respectively; where M is a positive integer greater than 1. The M group channel state measurement pilots are composed of a P group first type channel state measurement pilot and a Q group second type channel state measurement pilot. Any one of the second type of channel state measurement pilots is composed of n sets of each of the N sets of first type channel state measurement pilots. Where P and Q are positive integers, and P+Q=M; wherein P≥N≥2, n≥1, the Nt is the number of antennas of the base station.

Step S304: The terminal UE receives the channel measurement pilot transmitted by the base station, performs channel measurement by using the pilot, and feeds back the channel state information reference signal CSI information to the base station. The base station synthesizes Ct information of the Nt dimension according to the CSI information and the pilot packet situation fed back by the terminal, and precodes the terminal by using the Nt-dimensional CSI information.

Optionally, for the remaining number of packets N in the alternative embodiment and the number n of each group of the remaining packets, the base station may be configured by the base station, and the base station separately sends M sets of channel state measurement guides to the terminal in the N1 subframes. Frequency; wherein N1 is a positive integer; N1 is a positive integer less than or equal to M; N1 subframes are periodically transmitted; and a transmission period T of N1 subframes is configured by the base station eNB;

In the channel measurement pilots of group M, each group contains km-dimensional channel measurement pilots; where km is a positive integer, m=1...M; k _{m are} all equal; where m=1...M; channel measurement of group M Sum of frequency dimensions

Greater than Nt;

The base station sends M sets of channel state measurement pilots to the terminal eNB on the N2 resource block RBs, where N2 is a positive integer, and the N2 is a positive integer less than or equal to M;

Optionally, the base station eNB sends the M group channel state measurement pilots to the terminal eNB by using the N3 sets of pilot positions, where N3 is a positive integer; N3 is a positive integer less than or equal to M; the number of packets M, N1, N2, N3, Can be configured by the base station;

Optionally, the base station notifies the terminal of the N2 RB positions, the terminal performs channel measurement on the predetermined RB position, and feeds back the channel state information to the base station;

Optionally, the base station notifies the terminal by using N3 sets of pilots, and the terminal performs channel measurement at a predetermined pilot position, and feeds back channel state information to the base station;

Optionally, the channel state measurement pilot includes at least a CSI-RS; or the channel state measurement pilot includes at least a CRS;

The present optional embodiment is described in detail below in conjunction with an optional implementation of the alternative embodiment;

Alternative embodiment 1

The number of antennas of the base station eNB is 16, and the number of receiving antennas of the terminal is 2. The base station sends 16Tx to the terminal UE. The channel state measures the pilot, and the base station divides the channel measurement pilot into M groups, where M=5, and each group is 4Tx measurement pilots (the measurement pilots may be CRS or CSI-RS). M=1~4 is the first type of measurement pilot, and M=5 is the second type of measurement pilot. The correspondence between the antenna number and the group number is shown in Table 1-1.

M group number		Antenna number
1	0 1 2 3
2	4 5 6 7
3	8 9 10 11
4	12 13 14 15
5	0 4 8 12

The terminal receives the 4Tx measurement pilot, and uses the pilot to perform channel measurement, obtains 4Tx codebook, CQI and RI, and feeds back CSI information to the base station respectively.

The base station receives five CSI information at predetermined positions, the base station obtains the total CQI by using the CQI of the five CSI information, obtains the total RI by using the RI of the five CSI information, and obtains the total by using the PMI of the five CSI information. PMI.

The base station performs precoding processing on the terminal by using the obtained total channel information.

Alternative embodiment 2

The number of antennas of the base station eNB is 32, and the number of receiving antennas of the terminal is 2. The base station sends a 32Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, where M=5, each group is 8Tx or 4Tx measurement pilots (the measurement pilot can be CRS or CSI-RS) ). The correspondence between the antenna number and the group number is shown in Table 2-1.

Group No		Antenna number
1	0 1 2 3 4 5 6 7
2	8 9 10 11 12 13 14 15
3	16 17 18 19 20 21 22 23
4	24 25 26 27 28 29 30 31
5	0 8 16 24

The terminal receives the measurement pilot, uses the pilot to perform channel measurement, obtains CSI information, and feeds back to the base station separately. CSI information; Table 2-2: 8Tx rank1-2 codebook:

v _m =[1 e ^j2πm/32 e ^j4πm/32 e ^j6πm/32 ] ^T

Table 2-3: 4Tx rank1-2 codebook

The base station obtains the CSI information fed back by the terminal at a predetermined location, assuming:

M=1, RI=1, PMI=0;

M=2, RI=1, PMI=0;

M=3, RI=1, PMI=1;

M=4, RI=1, PMI=4;

M=5, RI=1, PMI=0.

The base station receives five CSI information respectively, the base station obtains the total CQI by using the CQI of the five CSI information, obtains the total RI by using the RI of the five CSI information, and obtains the total PMI by using the PMI of the five CSI information.

The calculation method is as follows:

The five codewords obtained are:

[1 1 1 1 1 1 1 1] ^T , [1 1 1 1 1 1 1 1] ^T , [1 1 1 1 j j j j] ^T ,

[1 1 1 1] ^T

The base station first uses the first 4 codewords to synthesize

Finally, the phase adjustment between the antennas is performed by using the 4-antenna codebook to obtain the final codeword.

The base station performs precoding processing on the terminal by using the obtained total channel information.

Alternative embodiment 3

The number of antennas of the base station eNB is 16, and the number of receiving antennas of the terminal is 1. The base station sends a 16Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, and the base station packet number M can be configured by the base station. For example, Table 3-1: Base station side M value configuration table:

For example, take M=3, each group is 8Tx or 4Tx measurement pilot (the measurement pilot can be CRS or CSI-RS). FIG. 6 is a schematic diagram of a base station transmitting a channel state measurement pilot to a terminal on three TTIs according to an optional embodiment of the present invention. As shown in FIG. 6, the base station transmits an MTT 1 8Tx pilot on TTI1, on TTI2. An 8Tx pilot of M=2 is transmitted, and a 4Tx pilot of M=3 is transmitted on TTI3.

The terminal obtains the pilot, measures the channel state, and feeds back the channel state information CSI.

The base station receives the CSI information fed back by the terminal, and synthesizes the total CSI information according to the CSI information, and the calculation method is as shown in the optional embodiment 2. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 4

The number of antennas of the base station eNB is 16, and the number of receiving antennas of the terminal is 1. The base station sends a 16Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=3, each group is 8Tx or 4Tx measurement pilots (the measurement pilot can be CRS or CSI- RS). The base station transmits channel state measurement pilots to the terminal on three TTIs respectively. As shown in FIG. 5, the base station transmits an MTT 1 8Tx pilot on TTI1 and an M=2 8Tx pilot on TTI2, on TTI3. Send 4Tx pilots with M=3. The TTI 1-3 may be periodically sent, and the sending period is set to T. FIG. 7a is a schematic diagram 1 of a periodic transmission discontinuous TTI according to an alternative embodiment of the present invention, and FIG. 7b is a non-periodic transmission according to an optional embodiment of the present invention. A schematic diagram of a discontinuous TTI, as shown in Figures 7a and 7b:

The terminal obtains the pilot, measures the channel state, and feeds back the channel state information CSI.

The base station receives the CSI information fed back by the terminal, and synthesizes the total CSI information according to the CSI information, and the calculation method is as shown in the optional embodiment 2. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 5

The number of antennas of the base station eNB is 16, and the number of receiving antennas of the terminal is 1. The base station sends a 16Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=3, each group is 8Tx or 4Tx measurement pilots (the measurement pilot can be CRS or CSI- RS). The base station separately goes to the terminal on three TTIs. The channel state measurement pilot is transmitted. The base station transmits an 8Tx pilot of M=1 on TTI1, an 8Tx pilot of M=2 on TTI2, and a 4Tx pilot of M=3 on TTI3. The TTI 1-3 may be periodically sent, and the sending period is set to T. FIG. 8a is a schematic diagram of a non-contiguous TTI of periodic transmission according to an alternative embodiment of the present invention, and FIG. 8b is a non-periodic transmission according to an alternative embodiment of the present invention. Schematic diagram 2 of the discontinuous TTI, as shown in Figures 8a and 8b:

The transmission period of the pilot is configured by the base station, as shown in Table 5-1.

Index	Cycle (TTI)
0	5
1	10
2	15
3	20

For example, when the base station selects the periodic configuration 1, the base station transmits M measurement pilots to the terminal every 10 TTIs.

The terminal obtains the pilot, measures the channel state, and feeds back the channel state information CSI.

The base station receives the CSI information fed back by the terminal, and synthesizes the total CSI information according to the CSI information, and the calculation method is as shown in the optional embodiment 2. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 6

The number of antennas of the base station eNB is 32, and the number of receiving antennas of the terminal is 4. The base station sends a 32Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=5, each group is 8Tx or 4Tx measurement pilots (the measurement pilot can be CRS or CSI- RS). The base station sends a channel state measurement pilot to the terminal on the five RBs. FIG. 9 is a schematic diagram of transmitting a pilot on the RB according to an alternative embodiment of the present invention. As shown in FIG. 9, the base station sends an 8Tx guide on the RB1-4. Frequency, 4Tx pilot is transmitted on RB5.

The terminal obtains the pilot separately, measures the channel state, and feeds back the channel state information CSI. The base station separately receives the CSI information fed back by the terminal, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 7

The number of antennas of the base station eNB is 16, and the number of receiving antennas of the terminal is 2. The base station transmits a 16Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=3, and each group is 8Tx or 2Tx measurement pilot CSI-RS. A channel state measurement pilot is sent to the terminal by using three sets of pilots on the RB of the base station. FIG. 10 is a schematic diagram of a CSI-RS RE position according to an alternative embodiment of the present invention. As shown in FIG. 10, the base station is on the RB1-4. The 8Tx pilot is transmitted and the 4Tx pilot is transmitted on RB5.

In FIG. 10, the base station transmits an 8Tx CSI-RS of M=1 using the CSI-RS pattern of #0, and the base station transmits an 8Tx CSI-RS of M=2 using the CSI-RS pattern of #1, and the base station utilizes #2 Send CSI-RS pattern 2=3 CSI-RS with M=3.

The terminal obtains the pilot, measures the channel state, and feeds back the channel state information CSI. The base station separately receives the CSI information fed back by the terminal, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 8

The number of antennas of the base station eNB is 32, and the number of receiving antennas of the terminal is 2. The base station transmits a channel state measurement pilot of 32 Tx to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=5, and each group is 8Tx or 4Tx measurement pilot CSI-RS. The base station sends a channel state measurement pilot to the terminal by using multiple sets of pilots on multiple TTIs. FIG. 11 is a schematic diagram of a base station transmitting a CSI-RS according to an alternative embodiment of the present invention. As shown in FIG. 11, the base station is on the TTI1. Send 3 sets of pilots and send 2 sets of pilots on TTI2.

In FIG. 11, the base station transmits an 8Tx CSI-RS of M=1 using the CSI-RS pattern of #0 in the first TTI, and the base station transmits the CSI of M=2 of 8Tx using the CSI-RS pattern of #1- RS, the base station transmits a 4Tx CSI-RS of M=5 using the CSI-RS pattern of #2. The base station transmits an 8Tx CSI-RS of M=3 using the CSI-RS pattern of #0 in the second TTI, and the base station transmits an 8Tx CSI-RS of M=4 using the CSI-RS pattern of #1.

The terminal obtains pilots respectively at the CSI-RS RE position, measures the channel state, and feeds back the channel state information CSI.

The base station separately receives the CSI information fed back by the terminal, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 9

The number of antennas of the base station eNB is 32, and the number of receiving antennas of the terminal is 2. The base station transmits a channel state measurement pilot of 32 Tx to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=5, and each group is 8Tx or 4Tx measurement pilot CSI-RS. The base station sends the channel state measurement pilots to the terminal by using multiple sets of pilots on multiple TTIs. FIG. 12 is a schematic diagram of the base station transmitting CSI-RS according to an alternative embodiment of the present invention. As shown in FIG. 12, the base station is on the RB1. Send 2 sets of pilots and send 2 sets of pilots on RB2.

In FIG. 12, the base station transmits an 8Tx CSI-RS of M=1 using the CSI-RS pattern of #0 in the first RB, and the base station transmits the CSI of M=2 of 8Tx using the CSI-RS pattern of #1. RS; the base station transmits an 8Tx CSI-RS of M=3 in the CIR-RS pattern of #0 in the second RB, and the base station transmits an 8Tx CSI-RS of M=4 using the CSI-RS pattern of #1, the base station A 4Tx CSI-RS of M=5 is transmitted using the CSI-RS pattern of #2.

The terminal obtains the pilot at the CSI-RS RE position, measures the channel state, and feeds back the channel state information CSI.

The base station separately receives the CSI information fed back by the terminal, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 10

The number of antennas of the base station eNB is 64, and the number of receiving antennas of the terminal is 2. The base station sends a 64Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=9, and each group is 8Tx measurement pilot CSI-RS. The base station uses multiple RBs to send channel state measurement pilots to the terminal on multiple TTIs. FIG. 13 is a schematic diagram of a base station transmitting CSI-RS according to an alternative embodiment of the present invention. As shown in FIG. 13, the base station utilizes on TTI1. Five RBs transmit five sets of pilots, and four sets of pilots are transmitted on four RBs on TTI2.

The terminal obtains the pilot at the set position, measures the channel state, and feeds back the channel state information CSI.

The base station receives the CSI information fed back by the terminal at a predetermined location, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 11

The number of antennas of the base station eNB is 64, and the number of receiving antennas of the terminal is 2. The base station sends a 64Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=9, and each group is 8Tx measurement pilot CSI-RS. The base station sends the channel state measurement pilots to the terminal by using multiple sets of pilots on multiple RBs of multiple TTIs. FIG. 14 is a schematic diagram of the base station transmitting CSI-RS according to an alternative embodiment of the present invention, as shown in FIG. The base station transmits two sets of pilots on RB1 on TTI1 and three sets of pilots on RB2. The base station transmits two sets of pilots on RB1 on TTI2 and two sets of pilots on RB2.

In FIG. 14, the base station transmits an 8Tx CSI-RS of M=1 using the CSI-RS pattern of #0 in the RB1 of the first TTI, and the base station transmits 8Tx of M=2 using the CSI-RS pattern of #1. CSI-RS; the base station transmits an 8Tx CSI-RS of M=3 in the CSI-RS pattern of #0 in RB2, and the base station transmits an 8Tx CSI-RS of M=4 using the CSI-RS pattern of #1, and the base station utilizes The CSI-RS pattern of #2 transmits an 8Tx CSI-RS of M=5. The base station transmits an 8Tx CSI-RS of M=6 using the CSI-RS pattern of #0 in the RB1 of the first TTI, and the base station transmits an 8Tx CSI-RS of M=7 using the CSI-RS pattern of #1; In RB2, an 8Tx CSI-RS of M=8 is transmitted using the CSI-RS pattern of #0, and the base station transmits an 8Tx CSI-RS of M=9 using the CSI-RS pattern of #1.

The terminal obtains the pilot at the CSI-RS RE position, measures the channel state, and feeds back the channel state information CSI.

The base station separately receives the CSI information fed back by the terminal at a predetermined location, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 12

The number of antennas of the base station eNB is 64, and the number of receiving antennas of the terminal is 2. The base station sends a 64Tx channel state measurement pilot to the terminal UE, and the base station sends the channel state measurement pilot to the terminal by using multiple sets of pilots on multiple RBs of the multiple TTIs, and the base station configures the terminal to use the TTI number N1 for transmitting the pilot. Table 12-1: Schematic diagram of the M value and TTI number of the base station configuration, as shown in Table 12-1:

As shown in Table 12-1, the base station configures the terminal with a value of 64 Tx = 0, that is, M = 9 is selected, and the transmission is completed within 2 TTIs. FIG. 15 is a base station transmitting CSI according to an alternative embodiment of the present invention. RS diagram 5, assuming that the pilot pilot pattern is as shown in Figure 15, two sets of pilots are transmitted on RB1 on TTI1, and three sets of pilots are transmitted on RB2; the base station transmits two sets of pilots on RB1 on TTI2, Two sets of pilots are transmitted on RB2.

In FIG. 15, the base station transmits an 8Tx CSI-RS of M=1 using the CSI-RS pattern of #0 in the RB1 of the first TTI, and the base station transmits the 8Tx of M=2 using the CSI-RS pattern of #1. CSI-RS; the base station transmits an 8Tx CSI-RS of M=3 in the CSI-RS pattern of #0 in RB2, and the base station transmits an 8Tx CSI-RS of M=4 using the CSI-RS pattern of #1, and the base station utilizes The CSI-RS pattern of #2 transmits an 8Tx CSI-RS of M=5. The base station transmits an 8Tx CSI-RS of M=6 using the CSI-RS pattern of #0 in the RB1 of the first TTI, and the base station transmits an 8Tx CSI-RS of M=7 using the CSI-RS pattern of #1; In RB2, an 8Tx CSI-RS of M=8 is transmitted using the CSI-RS pattern of #0, and the base station transmits an 8Tx CSI-RS of M=9 using the CSI-RS pattern of #1.

The terminal obtains the pilot at the location, measures the channel state, and feeds back the channel state information CSI.

The base station separately receives the CSI information fed back by the terminal at a predetermined location, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 13

The number of antennas of the base station eNB is 64, and the number of receiving antennas of the terminal is 2. The base station sends a 64Tx channel state measurement pilot to the terminal UE, and the base station sends the channel state measurement pilot to the terminal by using multiple sets of pilots on multiple RBs of the multiple TTIs, and the base station configures the number of RBs used for transmitting the pilot by the terminal. Table 13-1: Schematic diagram of the M value and RB number of the base station configuration, as shown in Table 13-1:

As shown in Table 13-1, the base station configures the terminal with a value of 64Tx=0, that is, M=9, and transmits within 3 RBs. FIG. 16 is a base station transmitting measurement pilot according to an alternative embodiment of the present invention. In the schematic diagram, it is assumed that the pilot pilot pattern is as shown in FIG. 16, and pilots are transmitted using 3 RBs on TTI1-TTI3, respectively.

The terminal obtains the pilot at the position of the measurement pilot, measures the channel state, and feeds back the channel state information CSI.

The base station separately receives the CSI information fed back by the terminal at a predetermined location, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 14

The number of antennas of the base station eNB is 16, and the number of receiving antennas of the terminal is 2. The base station sends a 16Tx channel state measurement pilot to the terminal UE, and the base station sends the channel state measurement pilot to the terminal by using multiple sets of pilots, and the base station configures the number of sets N3 used for transmitting the pilot for the terminal, Table 14-1: Base station configuration M A list of values and sets, as shown in Table 14-1:

As shown in Table 14-1, the base station configures the terminal with a 16Tx Index=0, that is, M=3, and uses 3 sets of pilots to transmit channel state pilots. FIG. 17 is a CSI according to an alternative embodiment of the present invention. -RS RE position diagram, as shown in Figure 17. In the figure, 8Tx CSI-RS is transmitted using #0 and yellow CSI-RS RE positions, and 2Tx measurement pilots are transmitted using #2's RE position.

The terminal obtains the pilot at the position of the measurement pilot, measures the channel state, and feeds back the channel state information CSI.

The base station separately receives the CSI information fed back by the terminal, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 15

The number of antennas of the base station eNB is 16, and the number of receiving antennas of the terminal is 1. The base station sends a 16Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=3, each group is 8Tx or 4Tx measurement pilots (the measurement pilot can be CRS or CSI- RS). The base station transmits channel state measurement pilots to the terminal on three TTIs, the base station transmits 8Tx pilots of M=1 on TTI1, 8Tx pilots of M=2 on TTI2, and 4Tx of M=3 on TTI3. Pilot. The TTI 1-3 may be periodically sent, and the sending period is set to T. FIG. 18a is a schematic diagram of a continuous TTI of periodic transmission according to an optional embodiment of the present invention, and FIG. 18b is a non-periodic transmission according to an alternative embodiment of the present invention. Three consecutive TTI diagrams, as shown in Figures 18a and 18b:

The transmission period of the pilot is configured by the base station. Table 15-1: The base station configures the pilot transmission period, as shown in Table 15-1:

Index	Cycle (TTI)
0	5
1	10
2	15
3	20

For example, when the base station selects the periodic configuration 1, the base station transmits M measurement pilots to the terminal every 10 TTIs.

The base station notifies the terminal UE of information such as the number of packets M and the location of the TTI.

The terminal obtains the channel state information pilots at predetermined positions, measures the channel state according to the period T, and the like, and feeds the channel state information CSI separately.

The base station receives the CSI information fed back by the terminal at a predetermined location, and synthesizes the total CSI information according to the CSI information. The calculation method is as shown in the optional embodiment 2. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 16

The number of antennas of the base station eNB is 32, and the number of receiving antennas of the terminal is 4. The base station sends a 32Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=5, each group is 8Tx or 4Tx measurement pilots (the measurement pilot can be CRS or CSI- RS). The base station sends a channel state measurement pilot to the terminal on the five RBs. FIG. 19 is a schematic diagram of transmitting a pilot on the RB according to an alternative embodiment of the present invention. As shown in FIG. 19, the base station sends an 8Tx guide on the RB1-4. Frequency, 4Tx pilot is transmitted on RB5. The base station notifies the terminal of the number of packets M and the RB location where the pilot is located.

The terminal obtains pilots respectively at predetermined RB positions, and separately measures channel state signals, and respectively feeds channel state information CSI. The base station separately receives the CSI information fed back by the terminal, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

Alternative embodiment 17

The number of antennas of the base station eNB is 16, and the number of receiving antennas of the terminal is 2. The base station transmits a 16Tx channel state measurement pilot to the terminal UE, and the base station divides the channel measurement pilot into M groups, for example, M=3, and each group is 8Tx or 2Tx measurement pilot CSI-RS. A channel state measurement pilot is sent to the terminal by using three sets of pilots on the RB of the base station. FIG. 20 is a schematic diagram of a CSI-RS RE position according to an alternative embodiment of the present invention. As shown in FIG. 20, the base station is on the RB1-4. The 8Tx pilot is transmitted and the 4Tx pilot is transmitted on RB5. The base station notifies the terminal of the pilot packet case M and the number of pilot sets and locations used.

In FIG. 20, the base station transmits an 8Tx CSI-RS of M=1 using the CSI-RS pattern of #0, and the base station transmits an 8Tx CSI-RS of M=2 using the CSI-RS pattern of #1, and the base station utilizes #2 The CSI-RS pattern transmits a 2Tx CSI-RS of M=3.

The terminal obtains pilots respectively at predetermined positions, and separately measures channel states, and respectively feeds back channel state information CSI.

The base station separately receives the CSI information fed back by the terminal at a predetermined location, and synthesizes the total CSI information according to the CSI information. The base station performs precoding processing on the terminal according to the total CSI information.

21 is a schematic diagram of different 64Tx codebooks and channel correlation coefficients according to an alternative embodiment of the present invention. As shown in FIG. 21, the channel is an associated channel, and the transmitting antenna is 64 antennas and 8 antennas, and different 64 antenna pilot transmissions are compared. Codebook and channel correlation under the codebook feedback method. The rightmost line in Figure 1 is the current R128Tx codebook and The matching degree of the channel, the second line on the right side is the correlation coefficient between the selected codebook and the channel under the channel state information transmission and feedback method described in the embodiment. The first line on the left side indicates that the codebook is randomly generated at 64 antennas; the second line on the left side indicates that the 8Tx codebooks of R12 are randomly combined to obtain a 64Tx codebook.

As can be seen from Fig. 21, although the number of antennas is increased to 64 antennas, the correlation coefficient is not much different from that of the 8Tx R12 codebook. The performance is much better than the 64Tx codebook on the left two lines.

With the optional embodiment, the manner in which the terminal activates the unlicensed carrier by itself is used, and the competing resources can be better utilized in the related art.

In another embodiment, software is also provided for performing the technical solutions described in the above embodiments and preferred embodiments.

In another embodiment, a storage medium is further provided, wherein the software includes the above-mentioned software, including but not limited to: an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.

Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device for execution by the computing device and, in some cases, may be performed in a different order than herein. The steps shown or described are either made separately into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above is only an alternative embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

In the process of the channel state measurement pilot involved in the foregoing embodiment of the present invention, the base station is configured to divide the predetermined number of channel state measurement pilots into a specified number group, and then send the specified number of channel state measurement pilots to the channel group. The terminal performs the channel measurement according to the received status measurement pilot to ensure that the base station can obtain better precoding performance, and solves the problem that the channel measurement performance is limited due to the fractal dimension measurement and feedback in the related art, thereby achieving The effect of making better use of competing resources.

Claims (22)

1. A method for processing a channel state measurement pilot, further comprising:

   The base station divides the channel state measurement pilot into a specified number of groups, wherein the channel state measurement pilot is a predetermined number of dimensions, and the predetermined number is the number of antennas of the base station;

   And the base station sends the channel state measurement pilot to the terminal according to the specified quantity group, where the channel state measurement pilot is used to instruct the terminal to perform channel measurement;

   Receiving, by the base station, channel state information that is sent by the terminal, where the channel state information is used to indicate that the base station performs precoding processing on the terminal;

   The specified number of sets of channel state measurement pilots includes: a first quantity of the first type of channel state measurement pilots and a second quantity of the second type of channel state measurement pilots; wherein the second quantity group The second type of channel state measurement pilots are respectively composed of one or more elements selected from each of the first type of channel state measurement pilots.
2. The method of claim 1 wherein the number of channel measurement pilots in the specified number of sets of channel state measurement pilots is equal.
3. The method of claim 1 wherein the sum of the dimensions of the specified number of sets of channel state measurement pilots is greater than the predetermined number.
4. The method according to claim 1, wherein the transmitting, by the base station, the channel state measurement pilots to the terminal according to the specified number of groups includes:

   The base station sends the channel state measurement pilot to the terminal in a predetermined number of subframes and according to the specified number of groups in a third number of subframes.
5. The method according to claim 1, wherein the transmitting, by the base station, the channel state measurement pilots to the terminal according to the specified number of groups includes:

   The base station sends the channel state measurement pilot to the terminal according to the specified number group on the fourth number of resource blocks RB.
6. The method according to claim 1, wherein the transmitting, by the base station, the channel state measurement pilots to the terminal according to the specified number of groups includes:

   The base station sends the channel state measurement pilot to the terminal according to the specified number group by using a fifth number of pilot positions.
7. The method according to any one of claims 1 to 6, wherein the channel state measurement pilot comprises at least one of: a channel state information reference signal CSI-RS, a cell-specific reference signal CRS.
8. A method for processing a channel state measurement pilot, further comprising:

   Receiving, by the terminal, a specified number of channel state measurement pilots sent by the base station, where the channel state measurement pilots are a predetermined number of dimensions, where the predetermined number is an antenna number of the base station;

   The terminal performs channel measurement according to the channel state measurement pilot, and feeds back channel state information to the base station.
9. The method according to claim 8, wherein the manner in which the terminal receives the specified number of sets of channel state measurement pilots transmitted by the base station comprises one of the following:

   Receiving, by the terminal, the specified number of channel state measurement pilots that are sent by the base station on a third number of subframes;

   Receiving, by the terminal, the specified number of channel state measurement pilots that are sent by the base station on a fourth number of resource blocks RB;

   The terminal receives the specified number of channel state measurement pilots transmitted by the base station at a fifth number of pilot locations.
10. The method according to claim 9, wherein the manner in which the terminal performs channel measurement according to the channel state measurement pilot includes one of the following:

    The terminal performs channel measurement on the subframe;

    The terminal performs channel measurement on a specified RB of the fourth number of resource blocks RB;

    The terminal performs channel measurement on a designated pilot position of the fifth number of pilot positions.
11. The method according to any one of claims 8 to 10, wherein the channel state measurement pilot comprises at least one of: a channel state information reference signal CSI-RS, a cell-specific reference signal CRS.
12. A processing device for measuring a pilot of a channel state, located at a base station side, further includes:

    Dividing into modules, the channel state measurement pilots are divided into a specified number of groups, wherein the channel state measurement pilots are a predetermined number of dimensions, the predetermined number being the number of antennas of the base station;

    a sending module, configured to send the channel state measurement pilot to the terminal according to the specified quantity group, where the channel state measurement pilot is used to instruct the terminal to perform channel measurement;

    a first receiving module, configured to receive channel state information that is fed back by the terminal, where the channel state information is used to instruct the base station to perform precoding processing on the terminal;

    The specified number of group channel state measurement pilots includes: a first quantity group of the first type of channel shape And a second number of sets of second type channel state measurement pilots; wherein said second number of said second type of channel state measurement pilots are measured by pilots from said first type of channel state One or more elements are selected from each group.
13. The apparatus of claim 12, wherein the number of each of the set of channel state measurement pilots of the specified number of sets of channel measurement pilots is equal.
14. The apparatus of claim 12, wherein a sum of dimensions of the specified number of sets of channel state measurement pilots is greater than the predetermined number.
15. The apparatus of claim 12, wherein the transmitting module comprises:

    The first sending unit is configured to separately send the channel state measurement pilot to the terminal in a predetermined period and according to the specified number group on the third number of subframes.
16. The apparatus of claim 12, wherein the transmitting module comprises:

    The second sending unit is configured to send the channel state measurement pilot to the terminal according to the specified number group on the fourth number of resource blocks RB.
17. The apparatus of claim 12, wherein the transmitting module comprises:

    The third sending unit is configured to send the channel state measurement pilot to the terminal according to the specified number of groups by using a fifth number of pilot positions.
18. The apparatus according to any one of claims 12 to 17, wherein the channel state measurement pilot comprises at least one of: a channel state information reference signal CSI-RS, a cell-specific reference signal CRS.
19. A processing device for channel state measurement pilots, located on the terminal side, further includes:

    a second receiving module, configured to receive a specified number of channel state measurement pilots sent by the base station, where the channel state measurement pilots are a predetermined number of dimensions, where the predetermined number is an antenna number of the base station;

    And an execution module, configured to perform channel measurement according to the channel state measurement pilot, and feed back channel state information to the base station.
20. The apparatus of claim 19, wherein the second receiving module comprises one of:

    a first receiving unit, configured to receive, by the base station, the specified number of channel state measurement pilots that are sent by the base station on a third number of subframes;

    a second receiving unit, configured to receive, by the base station, the specified number of channel state measurement pilots that are sent by the base station on the fourth number of resource blocks RB;

    And a third receiving unit, configured to receive the specified number of channel state measurement pilots sent by the base station on a fifth number of pilot locations.
21. The apparatus of claim 20 wherein said execution module comprises one of:

    a first execution unit configured to perform channel measurement on the subframe;

    a second execution unit, configured to perform channel measurement on a designated RB of the fourth number of resource blocks RB;

    And a third execution unit configured to perform channel measurement on a designated one of the fifth number of pilot positions.
22. The apparatus according to any one of claims 19 to 21, wherein the channel state measurement pilot comprises at least one of: a channel state information reference signal CSI-RS, a cell-specific reference signal CRS.

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