CN107733611B

CN107733611B - Method and device for processing quasi-co-location information

Info

Publication number: CN107733611B
Application number: CN201610666620.8A
Authority: CN
Inventors: 肖华华; 李儒岳; 张楠; 贺海港
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-08-12
Filing date: 2016-08-12
Publication date: 2022-04-29
Anticipated expiration: 2036-08-12
Also published as: WO2018028368A1; CN107733611B9; CN107733611A

Abstract

The invention provides a method for processing quasi-co-location informationAnd an apparatus, the method comprising: the base station divides M demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M; the base station sends the quasi co-location information of the N demodulation pilot frequency port groups to the terminal, and by the technical scheme, the problem that the terminal cannot obtain the quasi co-location parameter information of the interference DMRS in the related technology, so that the time offset and the frequency offset of the interference channel cannot be effectively obtained, and the time offset and the frequency offset of the channel interfering the DMRS estimation can be corrected is solved, so that the terminal can accurately obtain the quasi co-location information of the interference, the influence of the interference is accurately eliminated, and the performance of a wireless communication system is improved.

Description

Method and device for processing quasi-co-location information

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for processing quasi-co-location information.

Background

Multiple-input multiple-output (MIMO) is one of the important technologies in the field of wireless communication, and can improve the performance of a wireless communication system. In order to obtain high-quality wireless communication system performance, it is necessary for the transmitting end to know channel-related information in advance. However, a radio Channel is usually in a continuous change, and in order to adapt to the change of the Channel, in a Long Term Evolution (Long Term Evolution, abbreviated as LTE) or Long Term Evolution-Advanced (Long Term Evolution-Advanced, abbreviated as LTE-a) system, a User Equipment (User Equipment, abbreviated as UE) may report downlink Channel quality Information to a base station through downlink physical Channel State Information (CSI). The feedback content reflecting the downlink physical channel CSI in LTE comprises the following three items:

(1) channel quality indication (CQI for short);

(2) a Pre-coding Matrix Indicator (PMI for short);

(3) rank Indicator (RI for short).

Wherein, the RI is responsible for indicating the rank of the channel matrix, i.e., the number of data layers that can be transmitted in parallel; the PMI is responsible for providing a proposal for sending precoding for the UE; the CQI is a Signal to Interference plus Noise Ratio (SINR) level estimate of the UE during transmission according to the RI and PMI fed back by the UE, and is responsible for assisting the base station to determine a Modulation and Coding Scheme (MCS). The content of CSI feedback is usually measured and calculated on a certain Reference Signal (RS), wherein RS may include but is not limited to at least one of the following:

(1) cell Specific Reference Channel (CRS);

(2) a Channel State Information Reference Signal (CSI-RS for short);

(3) interference Measurement Resource (IMR for short).

LTE uses Orthogonal Frequency Division Multiplexing (OFDM) technology in a cell, and adjacent cells usually use the same Frequency, so that inter-cell interference is very serious, and even cell edge performance is poor. In order to improve the performance of cell edge users, a Long Term Evolution-Advanced (LTE-a) system introduces a Coordinated Multi-Point (CoMP) transmission technology, and the CoMP technology reduces the interference of the cell edge users through the cooperation of a plurality of adjacent base stations or nodes, thereby improving the service quality of the cell edge users. CoMP techniques are mainly classified into the following three types:

(1) joint Transmission (JT for short);

(2) dynamic node selection/Dynamic node elimination (Dynamic point selection/Dynamic point Blanking, abbreviated as DPS/DPB);

(3) coordinated scheduled Coordinated beamforming (CSCB for short) is cooperatively scheduled.

In addition, in LTE/LTE a, when supporting multi-point transmission, since a base station for data transmission is transparent to a terminal and the base station for data transmission can be dynamically switched, the terminal cannot accurately know which base station the received data is transmitted by, and therefore, a definition and notification signaling of Quasi-Co-Location information indicator (Quasi-Co-Location indicator) is introduced.

The quasi-co-location Information indicator represents a Channel State Information pilot (CSI-RS) for transmitting and notifying current data, and a user specific de-Modulation pilot Signal (DMRS) for transmitting and notifying the CSI-RS pilot, and is quasi-co-located, and both transmit large scale characteristics of a Channel having approximately the same characteristics as the notified CSI-RS pilot, such as delay spread, Doppler shift, and average delay, and the quasi-co-location may be understood as that the current data and the DMRS are approximately transmitted by the same base station.

After the terminal obtains the channel state information measurement pilot frequency CSI-RS or Cell specific Reference Signal (CRS) which is quasi-co-located with the DMRS, some statistical characteristic parameters of a channel between a base station and the terminal can be obtained in advance according to the pilot information during channel demodulation, so that the terminal can effectively utilize the statistical characteristic parameters to improve the estimation accuracy of demodulation pilot frequency, improve the performance of a receiver, effectively suppress noise, and apply the statistical characteristic parameters to different estimation algorithms and receiving algorithms.

It should be noted that the statistical channel characteristics can be accurately measured only by the pilot signals transmitted by the same base station, that is, the measurement of the statistical characteristic parameters is generally performed on the pilot signals transmitted by the same base station, such as CRI-RS or CRS. The terminal needs to know the DMRS and which CSI-RS or CRS is quasi co-located by receiving the quasi co-location information indication.

It should be noted that the pilot used for measuring the channel state information is called a measurement pilot, such as CSI-RS in LTE a, and may have other names in other standards. The pilot used to estimate the channel at the time of data demodulation is called a demodulation pilot, such as the DMRS pilot in LTE/LTE a, and may be named otherwise in other standards.

In the prior art, a user can only obtain the CSI-RS at the quasi-co-location of the DMRS port corresponding to the target signal according to the quasi-co-location parameter, so that the time offset and the frequency offset of the channel of the target signal are corrected according to the CSI-RS, the channel of the target signal can be accurately estimated through the DMRS, and the data demodulation performance is improved. However, with the development of wireless communication technology, base stations distributed in a network become denser, interference becomes more complex and serious, and interference on DMRSs becomes more complex and serious.

In the prior art, a base station only sends a quasi-co-location relation parameter of a signal DMRS, and a terminal cannot obtain the quasi-co-location parameter information of an interference DMRS, so that the time offset and the frequency offset of an interference channel cannot be effectively obtained, the problem of correcting the time offset and the frequency offset of the channel interfering the estimation of the DMRS is solved, the interference DMRS causes large interference on the signal DMRS, and the demodulation performance of signal data is also reduced.

In view of the above problems, the prior art has not yet proposed an effective solution.

Disclosure of Invention

The embodiment of the invention provides a method and a device for processing quasi co-location information, which are used for at least solving the problems that in the related technology, a terminal cannot obtain the quasi co-location parameter information of an interference DMRS (demodulation reference signal), so that the time offset and the frequency offset of an interference channel cannot be effectively obtained, and the time offset and the frequency offset of the channel interfering the DMRS estimation can be corrected.

According to an aspect of the present invention, there is provided a method for processing quasi-co-location information, including:

the base station divides M demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂Are all positive and integralN is more than 1 and less than or equal to M; and the base station sends the quasi-co-location information of the N demodulation pilot frequency port groups.

Optionally, the method further comprises: the base station configures L quasi co-location parameter sets S₀，…，S_L-1Wherein, L is a positive integer;

and the base station sends the configuration information of the quasi-co-location parameter set through a first signaling.

Optionally, the method further comprises:

the base station and the terminal appoint grouping information of N demodulation pilot frequency port groups; and/or

The base station sends grouping information of the N demodulation pilot frequency port groups through a second signaling; and/or

The base station and the terminal agree on N₁Grouping information of individual signal demodulation pilot port groups or N₂Grouping information of the interference demodulation pilot frequency port groups; and/or

The base station sends N through a third signaling₁Grouping information of individual signal demodulation pilot port groups or N₂Grouping information of the interference demodulation pilot port groups.

Alternatively, when N is₁When the number of demodulation pilot frequency ports is 1, the base station and the terminal appoint N demodulation pilot frequency port groups G₁，…，G_NG in (1)₁Demodulating a set of pilot ports, G, for a signal₂，…，G_NThe set of pilot ports is demodulated for interference.

Optionally, the base station is in the N₁Pilot signals used for data demodulation are sent on the demodulation pilot port groups; the base station is in the N₂Pilot signals for estimating interference channel information are transmitted on the interference demodulation pilot port groups.

Optionally, the number of transmission layers for transmitting data by the base station is the same as the number of ports of the signal demodulation pilot port group.

Optionally, the precoding used by the base station to transmit data is the same as the precoding used by the signal demodulation pilot port group; the precoding used by the base station for transmitting data is different from the precoding used by the interference demodulation pilot frequency port group.

Optionally, the sending, by the base station, the quasi-co-location information of the N demodulation pilot port groups includes: and the base station sends the quasi-co-location information to the terminal through 1 fourth signaling, wherein the fourth signaling is used for indicating indexes corresponding to the quasi-co-location parameter sets of the N demodulation pilot frequency port groups.

Optionally, the parameters of the quasi-co-location parameter set include: the base station and the terminal agree that one demodulation pilot port group is in the N demodulation pilot port groups, and the measurement pilot information in the quasi-co-location parameter set indicated by the fourth signaling is quasi-co-located.

Optionally, the sending, by the base station, the quasi-co-location information of the N demodulation pilot port groups includes: the base station sends the quasi-co-location information to the terminal through 1 fourth signaling, wherein the fourth signaling is used for indicating N₁And indexes corresponding to quasi-co-location parameter sets of the signal demodulation pilot port groups, wherein the quasi-co-location parameter sets comprise measurement pilot information of 1 quasi-co-location.

Optionally, the base station and the terminal agree on at least one of the following:

the quasi-co-location parameter set index information of the interference demodulation pilot frequency port group;

the quasi-co-location measurement pilot frequency information pilot frequency sequence of the interference demodulation pilot frequency port group is a fixed pilot frequency sequence;

the pilot frequency sequence of the quasi-co-location measurement pilot frequency information of the interference demodulation pilot frequency port group is the same as the pilot frequency sequence of the quasi-co-location measurement pilot frequency information of the signal demodulation pilot frequency port group;

the base station transmits a pilot sequence of the quasi co-located measurement pilot information of the interference demodulation pilot port group.

Optionally, the sending, by the base station, the quasi-co-location information of the N demodulation pilot port groups includes: the base station sends the quasi-co-location information to the terminal through N fourth signaling, where one of the N fourth signaling is used to indicate a quasi-co-location parameter set index of one demodulation pilot port group of the N demodulation pilot port groups, where the quasi-co-location parameter set includes measurement pilot information of 1 quasi-co-location.

Optionally, the quasi-co-located measurement pilot information includes at least one of: quasi co-located CSI-RS resources, quasi co-located CSI-RS configuration, and quasi co-located CSI-RS port groups.

According to another aspect of the present invention, there is also provided a method for processing quasi-co-location information, including: the terminal divides M demodulation reference signal demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein, the N1 demodulation pilot port groups are signal demodulation pilot port groups, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M; and the terminal receives the quasi-common position information corresponding to the N demodulation pilot frequency port groups sent by the base station.

Optionally, the terminal receives a first signaling, where the first signaling carries a parameter set S for determining L quasi-co-location parameters₀，…，S_L-1And L is a positive integer.

Optionally, the terminal and the base station agree on grouping information of N demodulation pilot port groups; and/or the terminal receives a second signaling, and determines grouping information of the N demodulation pilot frequency port groups according to the second signaling; and/or the terminal and the base station appoint N₁Grouping information of individual signal demodulation pilot port groups or N₂Grouping information of the interference demodulation pilot frequency port groups; and/or

The terminal receives a third signaling and determines N according to the third signaling₁Grouping information of individual signal demodulation pilot port groups or N₂Grouping information of the interference demodulation pilot port groups.

Alternatively, when N is₁When the number of demodulation pilot frequency ports is 1, the terminal and the base station appoint N demodulation pilot frequency port groups G₁，…，G_NG in (1)₁Demodulating a set of pilot ports, G, for a signal₂，…，G_NThe set of pilot ports is demodulated for interference.

Optionally, the method further comprises:

a terminal receives demodulation pilot frequencies on M demodulation pilot frequency ports;

the terminal divides the M demodulation pilot frequency ports into N₁A signal demodulation port group and N₂A plurality of interference demodulation pilot frequency port groups, the terminal according to N₁Estimating channel information on data carriers for demodulation pilots on each demodulation pilot port group; the terminal is according to N₂The demodulation pilots on the interference demodulation pilot port groups estimate the interference channel information.

Optionally, the method further comprises: the terminal receives 1 fourth signaling, where the fourth signaling is used to indicate an index corresponding to a quasi-co-location parameter set of N demodulation pilot port groups; and the terminal selects the quasi co-location parameter set of the demodulation pilot frequency port group from the L quasi co-location parameter sets through the fourth signaling, and obtains the quasi co-location information of the demodulation pilot frequency port group according to the selected quasi co-location parameter set.

Optionally, the terminal receives quasi co-location information sent by the base station through 1 fourth signaling, where the fourth signaling is used to indicate N₁And indexes corresponding to quasi-co-location parameter sets of the signal demodulation pilot port groups, wherein the quasi-co-location parameter sets comprise measurement pilot information of 1 quasi-co-location.

Optionally, the terminal obtains the quasi co-location information of the interference demodulation pilot port group in a manner appointed by the base station, or the terminal obtains the quasi co-location information of the interference demodulation pilot port group through a pilot sequence of the quasi co-location measurement pilot information of the interference demodulation pilot port group.

Optionally, the pilot sequence of the quasi co-located measurement pilot information of the interference demodulation pilot port group is determined at least by one of the following methods: a pilot frequency sequence of fixed quasi-co-location measurement pilot frequency information appointed by the terminal and the base station; pilot frequency sequence of quasi-co-location measurement pilot frequency information of the signal demodulation pilot frequency port group; and the pilot sequence of the quasi-co-location measurement pilot information of the interference demodulation pilot port group received by the terminal.

Optionally, the terminal receives N fourth signaling, and the terminal obtains quasi co-location information of an i-th group of demodulation pilot port groups according to the i-th fourth signaling, where one of the N fourth signaling is used to indicate a quasi co-location parameter set index of one of the N demodulation pilot port groups, where the quasi co-location parameter set includes measurement pilot information of 1 quasi co-location.

According to another aspect of the present invention, there is also provided a device for processing quasi-co-location information, which is applied to a base station, and includes: a first determining module for dividing the M demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein, the N1 demodulation pilot port groups are signal demodulation pilot port groups, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M; and the sending module is used for sending the quasi-co-location information of the N demodulation pilot frequency port groups.

According to another aspect of the present invention, there is also provided a device for processing quasi-co-location information, which is applied to a terminal, and includes:

a second determining module for dividing the M demodulation reference signal demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein, the N1 demodulation pilot port groups are signal demodulation pilot port groups, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M; and the receiving module is used for receiving the quasi-co-location information corresponding to the N demodulation pilot frequency port groups sent by the base station.

And the receiving module is used for receiving the quasi-co-location information corresponding to the N demodulation pilot frequency port groups sent by the base station.

By the invention, the base station divides M demodulation pilot frequency ports into N demodulation pilot frequency port groups G1, … and G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M; and then the quasi co-location information of the N demodulation pilot frequency port groups is sent to the terminal, and by the technical scheme, the problems that in the related technology, the terminal cannot obtain the quasi co-location parameter information of the interference DMRS, so that the time offset and the frequency offset of the interference channel cannot be effectively obtained, and the time offset and the frequency offset of the channel interfering the DMRS estimation can be corrected are solved, so that the terminal can accurately obtain the quasi co-location information of the interference, the influence of the interference is accurately eliminated, and the performance of a wireless communication system is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a block diagram of a hardware structure of a computer terminal of a method for processing quasi-co-location information according to an embodiment of the present invention;

fig. 2 is a flowchart of a processing method of quasi-co-location information on the base station side according to embodiment 1 of the present invention;

fig. 3 is a flowchart of a processing method of quasi-co-location information at a terminal side according to embodiment 1 of the present invention;

fig. 4 is a block diagram (one) of a processing apparatus of quasi-co-location information at the base station side according to embodiment 2 of the present invention;

fig. 5 is a block diagram of a processing apparatus of quasi-co-location information at the base station side according to embodiment 2 of the present invention;

fig. 6 is a block diagram of a processing apparatus of quasi-co-location information at a terminal side according to embodiment 2 of the present invention;

fig. 7 is a topology block diagram according to a first preferred embodiment of the present invention.

Detailed Description

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

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

In accordance with an embodiment of the present invention, there is provided an embodiment of a method for processing quasi-co-location information, it should be noted that the steps illustrated in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.

The method provided by the embodiment 1 of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking the example of the method running on a computer terminal as an example, fig. 1 is a hardware structure block diagram of a computer terminal of a method for processing quasi co-location information according to an embodiment of the present invention. As shown in fig. 1, the computer terminal 10 may include one or more (only one shown) processors 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data, and a transmission module 106 for communication functions. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration and is not intended to limit the structure of the electronic device. For example, the computer terminal 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.

The memory 104 may be configured to store software programs and modules of application software, such as program instructions/modules corresponding to the page content processing method in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104, that is, implementing the vulnerability detection method of the application program. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the computer terminal 10. In one example, the transmission device 106 includes a Network adapter (NIC) that can be connected to other Network devices through a base station to communicate with the internet. In one example, the transmission device 106 can be a Radio Frequency (RF) module, which is used to communicate with the internet in a wireless manner.

Under the operating environment, the embodiment of the invention provides a method for processing quasi-co-location information as shown in fig. 2. Fig. 2 is a flowchart of a processing method of quasi-co-location information on the base station side according to embodiment 1 of the present invention. As shown in fig. 2, the method includes:

s202, the base station divides the M demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M;

and S204, the base station sends the quasi co-location information of the N demodulation pilot frequency port groups.

It should be noted that, in the embodiment of the present invention, the demodulation pilot includes a DMRS in LTE, and may be referred to differently in different standards.

Through the steps, the base station divides the M demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M; the base station sends the quasi co-location information of the N demodulation pilot frequency port groups to the terminal, and by the technical scheme, the problem that the terminal cannot obtain the quasi co-location parameter information of the interference DMRS in the related technology, so that the time offset and the frequency offset of the interference channel cannot be effectively obtained, and the time offset and the frequency offset of the channel interfering the DMRS estimation can be corrected is solved, so that the terminal can accurately obtain the quasi co-location information of the interference, the influence of the interference is accurately eliminated, and the performance of a wireless communication system is improved.

In the present embodiment, N₁And N₂The sum of the additions is less than N, and in a preferred embodiment, N₁And N₂The sum of the additions may be N.

In the preferred implementation manner of the embodiment of the present invention, the base station configures L quasi-co-location parameter sets S₀，…，S_L-1Wherein, L is a positive integer; and the base station sends the configuration information of the quasi-co-location parameter set through a first signaling.

Preferably, the method further comprises:

When N is present₁When the number of demodulation pilot frequency ports is 1, the base station and the terminal appoint N demodulation pilot frequency port groups G₁，…，G_NG in (1)₁Demodulating a set of pilot ports, G, for a signal₂，…，G_NThe set of pilot ports is demodulated for interference.

Preferably, the base station is in said N₁Pilot signals used for data demodulation are sent on the demodulation pilot port groups; base station is in said N₂Pilot signals for estimating interference channel information are transmitted on the interference demodulation pilot port groups.

Optionally, the number of transmission layers for transmitting data by the base station is the same as the number of ports of the signal demodulation pilot port group. Or the precoding used by the base station for transmitting data is the same as the precoding used by the signal demodulation pilot frequency port group; the precoding used by the base station to transmit data is different from the precoding used by the interference demodulation pilot frequency port group.

Preferably, the base station is to send the quasi-co-location information of the N demodulation pilot port groups, including: and the base station sends the quasi-co-location information to the terminal through 1 fourth signaling, wherein the fourth signaling is used for indicating indexes corresponding to the quasi-co-location parameter sets of the N demodulation pilot frequency port groups.

In the embodiment of the present invention, the parameters of the quasi-co-location parameter set include: the measurement pilot information of N quasi-co-located measurement pilot information, where i is 1, …, N, where the measurement pilot information of the ith quasi-co-located measurement pilot in the quasi-co-located parameter set indicated by the base station and the terminal is quasi-co-located, i may also be understood as a demodulation pilot port set where the base station and the terminal are agreed to be one demodulation pilot port set in the N demodulation pilot port sets, and the measurement pilot information of one quasi-co-located measurement pilot in the quasi-co-located parameter set indicated by the fourth signaling is quasi-co-located.

Preferably, the base station is to send the quasi-co-location information of the N demodulation pilot port groups, including: the base station sends the quasi-co-location information to the terminal through 1 fourth signaling, wherein the fourth signaling is used for indicating N₁And indexes corresponding to quasi-co-location parameter sets of the signal demodulation pilot port groups, wherein the quasi-co-location parameter sets comprise measurement pilot information of 1 quasi-co-location.

In the embodiment of the invention, in order to enable the terminal to accurately obtain the quasi-co-location information, the base station and the terminal at least agree with one of the following:

In this embodiment of the present invention, the sending, by the base station, the quasi-co-location information of the N demodulation pilot port groups includes: the base station sends the quasi-co-location information to the terminal through N fourth signaling, where one of the N fourth signaling is used to indicate a quasi-co-location parameter set index of one demodulation pilot port group of the N demodulation pilot port groups, where the quasi-co-location parameter set includes measurement pilot information of 1 quasi-co-location.

In the practice of the inventionIn this example, the base station passes N₁A fourth signaling sending quasi co-location information of signal demodulation pilot port group, N₁A fourth signaling for indicating N₁A quasi co-location parameter set index for a set of signal demodulation pilot ports.

In this embodiment of the present invention, the quasi-co-located measurement pilot information at least includes one of the following: quasi co-located CSI-RS resources, quasi co-located CSI-RS configuration, and quasi co-located CSI-RS port groups.

In order to better understand the technical solution of the embodiment of the present invention, the embodiment further provides a method for processing quasi-co-location information. Fig. 3 is a flowchart of a processing method of quasi-co-location information at a terminal side according to embodiment 1 of the present invention, and as shown in fig. 3, the method includes:

s302, the terminal divides M demodulation reference signal demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M;

s304, the terminal receives the quasi co-location information corresponding to the N demodulation pilot frequency port groups sent by the base station.

Through the steps, the terminal divides M demodulation reference signal demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，……，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M; the terminal receives the quasi co-location information corresponding to the N demodulation pilot frequency port groups sent by the base station, and by the technical scheme, the problems that the terminal cannot obtain the quasi co-location parameter information of the interference DMRS in the related technology, so that the time offset and the frequency offset of the interference channel cannot be effectively obtained, and the time offset and the frequency offset of the channel interfering the DMRS estimation are corrected are solved, so that the terminal can accurately obtain the quasi co-location information of the interference and accurately eliminate the influence of the interference,the performance of the wireless communication system is improved.

In a preferred implementation manner of the embodiment of the present invention, a terminal receives a first signaling, where the first signaling carries a parameter set S for determining L quasi-co-location parameters₀，…，S_L-1And L is a positive integer.

In the embodiment of the invention, a terminal and the base station agree on grouping information of N demodulation pilot frequency port groups; and/or

The terminal receives a second signaling and determines grouping information of the N demodulation pilot frequency port groups according to the second signaling; and/or

The terminal and the base station agree on N₁Grouping information of individual signal demodulation pilot port groups or N₂Grouping information of the interference demodulation pilot frequency port groups; and/or

In the embodiment of the invention, when N is₁When the number of demodulation pilot frequency ports is 1, the terminal and the base station appoint N demodulation pilot frequency port groups G₁，…，G_NG in (1)₁Demodulating a set of pilot ports, G, for a signal₂，…，G_NThe set of pilot ports is demodulated for interference.

In this embodiment of the present invention, the method further includes:

the terminal divides the M demodulation pilot frequency ports into N₁A signal demodulation port group and N₂A plurality of interference demodulation pilot frequency port groups, the terminal according to N₁Estimating channel information on data carriers for demodulation pilots on each demodulation pilot port group; the terminal is according to N₂Estimating interference information from demodulation pilot frequency on interference demodulation pilot frequency port groupThe track information.

In this embodiment of the present invention, the method further includes:

the terminal receives 1 fourth signaling, wherein the fourth signaling is used for indicating indexes corresponding to the quasi-co-location parameter sets of the N demodulation pilot port groups;

and the terminal selects the quasi co-location parameter set of the demodulation pilot frequency port group from the L quasi co-location parameter sets through the fourth signaling, and obtains the quasi co-location information of the demodulation pilot frequency port group according to the selected quasi co-location parameter set.

In the embodiment of the present invention, the parameters of the quasi-co-location parameter set include: the measurement pilot information of N quasi-co-locations, where the measurement pilot information of the ith quasi-co-location in the quasi-co-location parameter set indicated by the base station and the terminal is quasi-co-located, where i is 1, …, N, may also be understood as a demodulation pilot port set where the base station and the terminal are assigned to N demodulation pilot port sets, and the measurement pilot information of one quasi-co-location in the quasi-co-location parameter set indicated by the fourth signaling is quasi-co-located.

In the embodiment of the present invention, the base station sends the quasi-co-location information to the terminal through 1 fourth signaling, where the fourth signaling is used to indicate N₁And indexes corresponding to quasi-co-location parameter sets of the signal demodulation pilot port groups, wherein the quasi-co-location parameter sets comprise measurement pilot information of 1 quasi-co-location.

It should be noted that the fourth signaling indicates N₁The indexes corresponding to the quasi-co-location parameter sets of the signal demodulation pilot port groups comprise three modes: in the first mode, an instruction is sent, and the instruction indicates the quasi-co-location information of the N port groups, because N CSI-RS configurations exist in the parameter set; sending an instruction which only indicates the quasi-common position of a signal DMRS port, only 1 CSI-RS configuration exists in a parameter set, and then carrying out blind detection on interference by some appointed terminals; and sending N instructions, wherein each instruction corresponds to the quasi-co-location of one DMRS port group.

Preferably, the terminal obtains the quasi co-location information of the interference demodulation pilot frequency port group according to the mode appointed by the base station, or

And the terminal obtains the quasi co-location information of the interference demodulation pilot frequency port group through the pilot frequency sequence of the quasi co-location measurement pilot frequency information of the interference demodulation pilot frequency port group.

Preferably, the pilot sequence of the quasi co-located measurement pilot information of the interference demodulation pilot port group is determined by at least one of the following methods:

a pilot frequency sequence of fixed quasi-co-location measurement pilot frequency information appointed by a terminal and the base station;

pilot frequency sequence of quasi-co-location measurement pilot frequency information of the signal demodulation pilot frequency port group;

and the pilot sequence of the quasi-co-location measurement pilot information of the interference demodulation pilot port group received by the terminal.

Preferably, the terminal receives N fourth signaling, and the terminal obtains the quasi co-location information of the i-th group of demodulation pilot port groups according to the i-th fourth signaling, where one of the N fourth signaling is used to indicate a quasi co-location parameter set index of one of the N demodulation pilot port groups, where the quasi co-location parameter set includes measurement pilot information of 1 quasi co-location.

Preferably, the quasi-co-located measurement pilot information includes at least one of: quasi co-located CSI-RS resources, quasi co-located CSI-RS configuration, and quasi co-located CSI-RS port groups.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

Example 2

In order to better understand the technical solution of the present invention, an embodiment of the present invention further provides a processing apparatus for quasi co-location information, which is applied to a base station. The method embodiment and the preferred embodiment of the apparatus for implementing the base station side are already described and will not be described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 4 is a block diagram (i) of a processing apparatus of quasi-co-location information on the base station side according to embodiment 2 of the present invention. As shown in fig. 4, the present apparatus includes:

a first determining module 40 for dividing the M demodulation pilot ports into N demodulation pilot port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M;

a sending module 42, configured to send the quasi-co-location information of the N demodulation pilot port groups.

With the above arrangement, the first determining module 40 divides the M demodulation pilot ports into N demodulation pilot port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M; the sending module 42 sends the quasi co-location information of the N demodulation pilot frequency port groups, and by the above technical scheme, the problem that in the related art, the terminal cannot obtain the quasi co-location parameter information of the interference DMRS, so that the time offset and the frequency offset of the interference channel cannot be effectively obtained, and the time offset and the frequency offset of the channel interfering with the DMRS estimation can be corrected is solved, and further, the terminal can obtain the quasi co-location parameter information of the N demodulation pilot frequency port groupsThe method and the device can accurately obtain the quasi-co-location information of the interference, accurately eliminate the influence of the interference and improve the performance of the wireless communication system.

Fig. 5 is a block diagram showing a configuration of a processing apparatus for quasi-co-location information at the base station side according to embodiment 2 of the present invention. As shown in fig. 5, in a preferred implementation manner of the embodiment of the present invention, the apparatus further includes a configuration module 44, configured to configure L quasi-co-location parameter sets S₀，…，S_L-1Wherein, L is a positive integer; the sending module 42 is further configured to send the configuration information of the quasi-co-location parameter set through the first signaling.

Preferably, the first determining module 40 is further configured to agree with the terminal about grouping information of N demodulation pilot port groups; and/or

Sending grouping information of the N demodulation pilot frequency port groups through a second signaling; and/or

Appointing N with terminal₁Grouping information of individual signal demodulation pilot port groups or N₂Grouping information of the interference demodulation pilot frequency port groups; and/or

Sending N through third signaling₁Grouping information of individual signal demodulation pilot port groups or N₂Grouping information of the interference demodulation pilot port groups.

When N is present₁The first determining module 40 is further configured to agree with the terminal for N demodulation pilot port groups G when the terminal is equal to 1₁，…，G_NG in (1)₁Demodulating a set of pilot ports, G, for a signal₂，…，G_NThe set of pilot ports is demodulated for interference.

Preferably, the sending module 42 is further configured to send the message at said N₁Pilot signals used for data demodulation are sent on the demodulation pilot port groups; a sending module 42, further configured to send the message at the N₂Pilot signals for estimating interference channel information are transmitted on the interference demodulation pilot port groups.

Preferably, the number of transmission layers for transmitting data by the base station is the same as the number of ports of the signal demodulation pilot port group. Or the precoding used by the base station for transmitting data is the same as the precoding used by the signal demodulation pilot frequency port group; the precoding used by the base station to transmit data is different from the precoding used by the interference demodulation pilot frequency port group.

Preferably, the sending module 42 is further configured to send the quasi-co-location information to the terminal through 1 fourth signaling, where the fourth signaling is used to indicate indexes corresponding to quasi-co-location parameter sets of the N demodulation pilot port groups.

Preferably, the parameters of the quasi-co-location parameter set include: the measurement pilot information of N quasi-co-locations, where the measurement pilot information of the ith quasi-co-location in the quasi-co-location parameter set indicated by the base station and the terminal is quasi-co-located, i is 1, …, N, that is, it can be understood that the base station and the terminal are assigned to a demodulation pilot port set of N demodulation pilot port sets, and the measurement pilot information of one quasi-co-location in the quasi-co-location parameter set indicated by the fourth signaling is quasi-co-located.

Preferably, the sending module 42 is further configured to send, by the base station, the quasi-co-location information to the terminal through 1 fourth signaling, where the fourth signaling is used to indicate an index corresponding to a quasi-co-location parameter set of N1 signal demodulation pilot port groups, where the quasi-co-location parameter set includes measurement pilot information of 1 quasi-co-location.

Preferably, in order to enable the terminal to accurately obtain the quasi-co-location information, the first determining module 40 is further configured to agree with the terminal at least one of the following:

the sending module 42 is further configured to send a pilot sequence of the measurement pilot information at the quasi-co-location of the interference demodulation pilot port group.

Preferably, the sending module 42 is further configured to send the quasi co-location information to the terminal through N fourth signaling, where one of the N fourth signaling is used to indicate a quasi co-location parameter set index of one demodulation pilot port group of the N demodulation pilot port groups, where the quasi co-location parameter set includes measurement pilot information of 1 quasi co-location.

Preferably, the sending module 42 is further configured to pass N₁A fourth signaling sending quasi co-location information of signal demodulation pilot port group, N₁A fourth signaling for indicating N₁A quasi co-location parameter set index for a set of signal demodulation pilot ports.

Preferably, the quasi co-located measurement pilot information includes at least one of: quasi co-located CSI-RS resources, quasi co-located CSI-RS configuration, and quasi co-located CSI-RS port groups.

In order to better understand the technical solution of the present invention, an embodiment of the present invention further provides a device for processing quasi-co-location information, which is applied to a terminal. The method embodiment and the preferred embodiment of the apparatus for implementing the terminal side are already described and are not described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 6 is a block diagram of a processing apparatus of quasi-co-location information at a terminal side according to embodiment 2 of the present invention. As shown in fig. 4, the present apparatus includes:

a second determining module 60, configured to divide the M demodulation reference signal demodulation pilot ports into N demodulation pilot port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot port groups are interference demodulation pilot port groups, M, N,N₁and N₂All are positive integers, and N is more than 1 and less than or equal to M;

a receiving module 62, configured to receive quasi-co-location information corresponding to the N demodulation pilot port groups sent by the base station.

With the present invention, the second determination module 60 divides the M demodulation reference signal demodulation pilot ports into N demodulation pilot port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M; the receiving module 62 receives the quasi co-location information corresponding to the N demodulation pilot frequency port groups sent by the base station, and by the above technical scheme, the problem that in the related art, the terminal cannot effectively eliminate channel estimation inaccuracy caused by factors such as time offset and frequency offset of an interference channel due to the fact that the terminal cannot acquire the quasi co-location information of the interference channel is solved, so that the terminal can accurately acquire the quasi co-location information of the interference, the influence of the interference is accurately eliminated, and the performance of the wireless communication system is improved.

In a preferred implementation manner of the embodiment of the present invention, the receiving module 62 is further configured to receive a first signaling, where the first signaling carries information used for determining L quasi-co-location parameter sets S₀，…，S_L-1And L is a positive integer.

Preferably, the second determining module 60 is further configured to agree with the base station about grouping information of N demodulation pilot port groups; and/or

Receiving a second signaling, and determining grouping information of the N demodulation pilot frequency port groups according to the second signaling; and/or

Appointing N with the base station₁Grouping information of the signal demodulation pilot port group; and/or

Receiving a third signaling, and determining N according to the third signaling₁A signal demodulation pilot terminalGrouping information of port groups or N₂Grouping information of the interference demodulation pilot port groups.

Preferably, when N is₁When the number of demodulation pilot ports is 1, the second determining module 60 is further configured to agree with the base station for N demodulation pilot port groups G₁，…，G_NG in (1)₁Demodulating a set of pilot ports, G, for a signal₂，……，G_NThe set of pilot ports is demodulated for interference.

Preferably, the receiving module 62 is further configured to receive demodulation pilots on M demodulation pilot ports;

a second determining module 60, further configured to divide the M demodulation pilot ports into N1 signal demodulation port groups and N₂A set of interference demodulation pilot ports, according to N₁Estimating channel information on data carriers for demodulation pilots on each demodulation pilot port group; and according to N₂The demodulation pilots on the interference demodulation pilot port groups estimate the interference channel information.

Preferably, the receiving module 62 is further configured to receive 1 fourth signaling, where the fourth signaling is used to indicate indexes corresponding to the quasi-co-location parameter sets of the N demodulation pilot port groups;

the second determining module 60 is further configured to select a quasi co-location parameter set of the demodulation pilot port group from the L quasi co-location parameter sets through the fourth signaling, and obtain quasi co-location information of the demodulation pilot port group according to the selected quasi co-location parameter set.

Preferably, the parameters of the quasi-co-location parameter set include: the measurement pilot information of N quasi-co-locations, where the measurement pilot information of the ith quasi-co-location in the quasi-co-location parameter set indicated by the base station and the terminal is quasi-co-located, where i is 1, …, N, may also be understood as a demodulation pilot port set where the base station and the terminal are assigned to N demodulation pilot port sets, and the measurement pilot information of one quasi-co-location in the quasi-co-location parameter set indicated by the fourth signaling is quasi-co-located.

Preferably, the receiving module 62 is further configured to receive quasi co-location information sent by the base station through 1 fourth signaling, where the fourth signaling is used to indicate an index corresponding to a quasi co-location parameter set of N1 signal demodulation pilot port groups, where the quasi co-location parameter set includes measurement pilot information of 1 quasi co-location.

It should be noted that the indexes corresponding to the quasi-co-location parameter set of the fourth signaling instruction N1 signal demodulation pilot port groups include three ways: in the first mode, an instruction is sent, and the instruction indicates the quasi-co-location information of the N port groups, because N CSI-RS configurations exist in the parameter set; sending an instruction which only indicates the quasi-common position of a signal DMRS port, only 1 CSI-RS configuration exists in a parameter set, and then carrying out blind detection on interference by some appointed terminals; and sending N instructions, wherein each instruction corresponds to the quasi-co-location of one DMRS port group.

Preferably, the second determining module 60 is further configured to obtain quasi co-location information of the interference demodulation pilot port group in a manner appointed by the base station, or

And obtaining the quasi co-location information of the interference demodulation pilot frequency port group through the pilot frequency sequence of the quasi co-location measurement pilot frequency information of the interference demodulation pilot frequency port group.

Preferably, the receiving module 62 is further configured to receive N fourth signaling, and obtain quasi co-location information of an ith demodulation pilot port group according to the ith fourth signaling, where one of the N fourth signaling is used to indicate a quasi co-location parameter set index of one demodulation pilot port group of the N demodulation pilot port groups, where the quasi co-location parameter set includes measurement pilot information of 1 quasi co-location.

Example 3

In order to better explain the technical solution of the present invention, embodiment 3 of the present invention provides the following preferred embodiment to specifically explain the technical solution. It should be noted that, the transmission node or the base station referred in the embodiments of the present invention includes but is not limited to: the base station comprises a base station, a macro base station, a micro base station, a femtocell, a wireless hotspot, a wireless remote station, a relay and the like. For ease of description, the communication system of an embodiment is described herein: the communication system comprises N coordinated transmission nodes, N transmission nodes are configured with N_tA root transmitting antenna, wherein N_tThe number of transmitting antennas of each communication node in this embodiment may be different, and N is greater than or equal to 2.

Preferred embodiment 1

Fig. 7 is a topology block diagram according to a first preferred embodiment of the present invention. As shown in fig. 7, the present preferred embodiment provides a case where N ═ 2, which can be similarly extended for the case where N > 2.

Two base stations, referred to herein as two transmission nodes, are involved in the preferred embodiment. As shown in fig. 1, the transmission node TP1 transmits data to the user UE1, and the data can be transmitted through a Physical Downlink Shared Channel (PDSCH) in LTE. In order for the UE1 to detect the received PDSCH, the TP1 needs to transmit a demodulation pilot (e.g., DMRS in LTE) with the same precoding as the PDSCH, and the UE1 performs channel estimation on the data carrier using the DMRS and detects the PDSCH using the channel on the estimated data carrier. For the UE1 to perform channel quality measurement, the transmission node TP1 needs to send a pilot related to channel measurement (e.g., CSI-RS pilot or CRS pilot in LTE) so that the UE1 estimates the channel state information CSI (including PMI, RI, CQI) according to the CSI-RS or CRS. Additionally, if TP2 transmits data to user UE2 on the same time-frequency domain, interference is caused to the data transmission of TP 1. The interference reduction method is that two transmission nodes perform cooperative scheduling, for example, the UE1 needs to measure the channel of the TP2, feed back precoding information that causes the maximum interference to the UE1 and feed back the precoding information to the TP1, the TP1 feeds back precoding information that causes large interference to the UE1 to the TP2, and the TP2 avoids using the precoding or scheduling users in a space related to precoding as much as possible.

Since the nodes of cooperative transmission are transparent to the user, which transmission node sends the pilot information, the user does not need to know. The base station only needs to inform the user that the current data transmission and the informed CSI-RS/CRS are quasi co-located with the user DMRS transmission and the informed CSI-RS/CRS. To obtain quasi-co-location information, this is done in LTE: the base station configures 4 Parameter sets, Parameter set 1 to Parameter set 4, wherein each Parameter set includes a physical downlink shared channel resource element mapping (PDSCH RE mapping) Parameter set and a Quasi-Co-Location (QCL) Parameter set, and is configured through high-level signaling, and notifies the configuration to the terminal through the high-level signaling.

The base station sends a downlink signaling in each downlink control channel, that is, the Quasi-Location information is indicated by a physical downlink shared channel resource unit Mapping and Quasi-Co-Location indication signaling (PDSCH RE Mapping and Quasi-Co-Location Indicator, abbreviated as PQI). And indicating one of the parameter sets by using the PQI so as to obtain which CSI-RS/CRS the DMRS corresponding to the received PDSCH corresponds to, and carrying out channel detection, time offset, frequency offset calibration and the like on the channel by using the CSI-RS/CRS. Here, PQI is 1 parameter in the downlink control signaling format 2D in the physical layer signaling, including 2 bits, and as shown in table 2, the mapping of the physical downlink shared channel resource unit and the quasi-co-location indication signaling inform each state meaning.

TABLE 2

The quasi co-location parameter set includes configuration or information of the following parameters:

configuration parameter information of 1 CRS comprises parameters of port number and frequency domain shift;

multicast/multicast Single Frequency Network (MBSFN) subframe configuration parameter information;

parameter configuration information of Zero Power (ZP for short) CSI-RS;

configuration information PDSCH starting position of physical downlink shared channel starting symbol parameters;

1 quasi co-located Non-Zero Power (Non-Zero Power, abbreviated as NZP) CSI-RS information (qcl-NZP CSI-RS).

For simplicity of description, the quasi co-located non-zero power CSI-RS is simplified to be written as qcl NZP CSI-RS.

To make the description more intuitive, QCL parameters are presented in table form. The values of the different parameters in the above parameter set are summarized here in table 3 below.

TABLE 3

In the current COMP of LTE, a base station notifies a user that DMRS ports are quasi-co-located, that is, all DMRS ports are from the same base station, and the user and the DMRS ports qcl NZP CSI-RS are notified in a default manner or a PQI notification manner, and a terminal can estimate time offset and frequency offset according to the qcl NZP CSI-RS, so that channel estimation of the DMRS is more accurate. But no related technical expenditure exists, the base station informs the DMRS port of the user, part of the DMRS port of the signal base station and part of the DMRS port of the interference base station, if the channel of the interference DMRS port can be estimated, the interference can be estimated, so that the interference is eliminated, or the time offset and the frequency offset on the interference DMRS port can be estimated according to the quasi-co-location measurement pilot frequency information of the interference DMRS port, so that the orthogonality of the interference DMRS and the signal DMRS port can be better ensured, and the interference of the signal DMRS port can be reduced. A quasi co-located transmission method and a terminal receiving method are described below with several embodiments. The base station can send the quasi-common position of the signal DMRS port and the quasi-common position of the interference DMRS port in the same downlink subframe, and the terminal can also obtain the quasi-common position information of the signal DMRS port and the interference DMRS port.

It should be noted that the DMRS port herein may have other names in other standards, such as data demodulation related pilot, demodulation dedicated pilot, etc., and it is within the scope of the present invention that any pilot is used to estimate the channel on the data carrier and to demodulate the data on the data carrier. The CSI-RS mentioned in the embodiments of the present invention may have other names in other standards, such as measurement pilot, channel measurement pilot, measurement related pilot, as long as the pilot is used to measure the channel state information, and all of them are within the protection scope of the present invention and are equivalent concepts.

Preferred embodiment two

For the base station, the following signaling is transmitted.

(A1) Base station divides M DMRS ports into N DMRS port groups G₁，…，G_NAnd transmitting the quasi-co-location information of the N DMRS port groups.

Here, each DMRS port group includes at least 1 DMRS port, 1<N is less than or equal to M. For example, there are DMRS ports {7,8,9,10}, then it can be divided into two groups, DMRS port group G₁＝{7,8}，G₂Three groups G are also possible ═ 9,10}₁＝{7,8}，G₂＝{9}，G₃10. Other groupings are of course possible, not to mention here, which relate to the number of layers of data transmitted, the number of interferers, and the number of layers of interferers.

In the N groups of DMRS port numbers, wherein N is₁The DMRS port group is a signal DMRS port group, N₂The DMRS port groups are interference DMRS port groups. Among them, in the preferred embodiment provided by the invention, N₁+N₂＝N，N₁And N₂Is a positive integer. Wherein, the signal DMRS port group is used for transmitting pilot signals related to data demodulation, and the pilot signals used for estimating interference channel information are transmitted on the interference DMRS port group. In general, N₁The value of (1) is related to the number of signal DMRS port groups and the number of data transmission layers, and is generally 1. For example, to transmit two data layers, two DMRS ports for transmitting signals are required, if the DMRS ports are divided into 1 group, each group has two ports, and if the DMRS ports are divided into 2 groups, each group has 1 port.

Here, the number of N is related to the number of cooperating transmission nodes, and is generally smaller than the number of cooperating transmission nodes. Here, the transmission nodes may be different cells/virtual cells/beams on the same site, or different cells/virtual cells/beams on sites on different sites. For example, when two transmission nodes cooperate, N is 2, and when the transmission nodes cooperate, N is 3.

The DMRS port grouping information here may be agreed by the base station and the terminal, for example, the DMRS port group is agreed to be grouped into G when 2 TPs cooperate₁＝{7,8}，G₂9,10, and G in 3 TPs in cooperation₁＝{7,8}，G₂＝{9}，G₃10. Or the base station may notify the terminal through the second signaling, for example, configure through a parameter configuration list, where in two TPs, there are two elements in the configuration list, and each element includes one DMRS port configuration, {7,8} and {9,10 }. The sending of the second signaling may be a semi-static configuration of the higher layer signaling or a dynamic configuration of the physical layer signaling.

Here, the type of each DMRS port group can be base station and terminal agreed, e.g., DMRS port group G₁Indicating DMRS port type as signal DMRS port group, G₁The outer DMRS port group is an interfering DMRS port group. The DMRS port group G may be a value of a DMRS port group G, and the DMRS port group G may be a value of a third signaling₂The DMRS ports are signal DMRS port groups, or the DMRS port groups with the group numbers less than or equal to 2 are all signal DMRS port groups. The signaling may also be oneA group value indicating that more than 1 group of DMRS ports are signal DMRS port groups. Of course, here, the third signaling may also indicate an index of the interference DMRS port group, which is not illustrated here.

(A2) Pilot signal transmission on M DMRS ports of transmission node

The transmission node is in the N₁Pilot signals used for data demodulation correlation are transmitted on the signal DMRS port groups; in said N₂And pilot signals used for estimating interference channel information are transmitted on the interference DMRS port groups.

With N₁＝N₂1 is illustrated by a column, e.g. TP1 at e.g. TP1 at N₁Transmitting data demodulation-related pilot signals on individual sets of DMRS ports, TP2 at N₂And transmitting pilot frequency information on the interference DMRS port groups. If, N₂Greater than 1, then N₂Each TP transmitting pilot information on one interfering DMRS port group.

The number of data transmission layers of the transmission nodes is the same as the number of ports of the signal DMRS port group.

The precoding used by the transmission node for transmitting data is the same as the precoding used by the signal DMRS port group; the precoding used by the base station for transmitting data is different from the precoding used by the interference DMRS port group.

(A3) The base station configures L quasi co-location parameter sets S₀，…，S_L-1And sending the L pieces of quasi-co-location parameter set information through first signaling.

Here, L is equal to or greater than N.

Each parameter set includes at least N quasi co-located CSI-RS information. In addition, other parameter information may also be included, and an example of the parameter information of one quasi-co-location parameter set is as follows:

1 CRS configuration parameter information;

1 MBSFN subframe configuration parameter information;

parameter configuration information of 1 ZP CSI-RS;

1 PDSCH starting position;

n >1 quasi co-located NZP CSI-RS information.

Here, the NZP CSI-RS may be an NZP CSI-RS resource, or an NZP CSI-RS configuration, or one NZP CSI-RS port group. One NZP CSI-RS may include 1 or more NZP CSI-RS configurations, and one NZP CSI-RS configuration may include 1 or more NZP CSI-RS port groups.

For simplicity of description, set S of L quasi co-location parameters₀，…，S_L-1As shown in table 4 below, without loss of generality, here L-4, N-2, and quasi co-located CSI-RS information is written as qcl NZP CSI-RS.

TABLE 4

Here, the transmission node transmits the quasi-co-location information of the N DMRS port groups described in this embodiment (a1) through 1 fourth signaling. The fourth signaling indicates the L sets S of quasi co-location parameters₁～S_LOne set of (a).

Here, the base station and the terminal agree that the ith qcl NZP CSI-RS information of the ith DMRS port group and one quasi-co-location parameter set is quasi-co-located, i is 1, …, N.

For the terminal, the following operations are performed to complete the reception of the alignment co-location information.

(B1) Receiving pilot information of M DMRS ports, and dividing the M DMRS ports into N DMRS port groups G₁，…，G_N. And receiving quasi-co-location information of the N port groups.

Here, the N DMRS port groups are divided into two types of DMRS port groups, where N is₁The DMRS port group is a signal DMRS port group, N₂The DMRS port groups are interference DMRS port groups. Wherein N is₁+N₂＝N，N₁And N₂Is a positive integer of 1<N≤M。

The terminal obtains information of N DMRS port groups through DMRS port group information appointed by the base station, for example, the DMRS port group is appointed to be G when being grouped in 2 TP cooperation₁＝{7,8}，G₂9,10, and G in 3 TPs in cooperation₁＝{7,8}，G₂＝{9}，G₃10. Or, the terminal receives a second signaling, and obtains information of N DMRS port groups through the second signaling, for example, the signaling is configured through a parameter configuration list, and in two TPs, there are two elements in the configuration list, where each element includes one DMRS port configuration, {7,8} and {9,10 }. The second signaling may be a higher layer signaling or a physical layer signaling.

Here, the type of each DMRS port group can be base station and terminal agreed, e.g., DMRS port group G₁Indicating DMRS port type as signal DMRS port group, G₁The outer DMRS port group is an interfering DMRS port group. The terminal may also receive a third signaling, where the third signaling may indicate an index of the DMRS port group in the signal, for example, when the value of the index is 2, the index indicates the DMRS port group G₂The DMRS ports are signal DMRS port groups, or the DMRS port groups with the group numbers less than or equal to 2 are all signal DMRS port groups. The signaling may also be a set of values indicating that more than 1 set of DMRS port groups are signal DMRS port groups. Of course, here, the third signaling may also indicate an index of the interference DMRS port group, which is not illustrated here.

(2) The terminal estimates channel information on a data carrier on a signal DMRS port group and estimates interference channel information on an interference DMRS port group

With N₁＝N₂The column is illustrated with 1, and the terminal is at N₁Estimating pilot signals related to data demodulation transmitted by TP1 on DMRS port group, and using the pilot signals to estimate channel H on data carrier, and terminal is at N₂And estimating interference channel information from the interference transmission nodes to the users on each DMRS port group on the interference DMRS ports. For example, the interfering transmission node is TP2, which includes ports 9,10, then the user estimates the channel HI on ports 9, 10.

(B3) The terminal receives a first signaling and determines L different quasi-co-location parameter sets S according to the first signaling₀，…，S_L-1。

1 CRS configuration parameter information;

1 MBSFN subframe configuration parameter information;

parameter configuration information of 1 ZP CSI-RS;

1 PDSCH starting position;

n >1 quasi co-located NZP CSI-RS information.

And the terminal selects a quasi-co-location parameter set of the DMRS port group from the L quasi-co-location parameter sets by using the 1 fourth signaling received in (B1), and obtains the quasi-co-location information of the DMRS port group according to the selected quasi-co-location parameter set. For example, if the fourth signaling is '00', the quasi co-location parameter information representing the terminal is included in the first quasi co-location parameter set. And obtaining the quasi-co-location parameter information of the terminal by using the first quasi-co-location parameter set. The parameters of the quasi-co-location parameter set comprise CSI-RS information of N quasi-co-locations, and the terminal determines that the CSI-RS of the quasi-co-location of the ith DMRS port group is the ith CSI-RS information, i is 1, …, N. For example, the first qcl NZP CSI-RS is the data DMRS port group G₁And (3) estimating the time offset and the frequency offset of the DMRS port group G1 by using the first qclNZP CSI-RS at the quasi-co-position NZP CSI-RS of {7,8}, correcting the time offset and the frequency offset of the channel H to obtain H', and using the second qcl NZP CSI-RS as the interference DMRS port group G₂Quasi co-location NZP CSI-RS of { 910 }, and useAnd estimating time offset, frequency offset and the like of interference by the two qcl NZP CSI-RSs, and correcting the time offset and the frequency offset of the HI to obtain the channel HI'. Note that the quasi co-located qcl NZP CSI-RS can also be used to estimate some other large scale information, such as doppler shift, large scale fading, etc.

After the HI 'is obtained, it can be combined with the signal channel H' to perform more accurate data check on the channel transmitted on the data carrier, thereby improving the performance of the system. For example, the HI' may be used to estimate the interference signal SI and subtract the effect of the interference signal from the received signal, thereby improving the confidence of the data detection. If a plurality of interference DMRS port groups exist, channels of the corresponding interference DMRS port groups can be obtained similarly, and interference elimination is carried out.

It should be noted that, obtaining the interference quasi-co-location parameter information not only can perform interference cancellation on the received signal, but also can reduce the interference on the DMRS port of the signal, thereby obtaining more accurate channel estimation on the signal data demodulation carrier. For example, on a DMRS port, because a signal DMRS and an interfering DMRS belong to different ports (in LTE, different DMRS ports may have the same resource unit set, but the DMRS ports are distinguished by code division), time offset is corrected, and the interfering DMRS port after frequency offset has less interference to the signal DMRS port, that is, interference of the signal DMRS port can be reduced by obtaining an interference quasi-co-location parameter.

Preferred embodiment three

For the base station, the following signaling is sent:

Here, each DMRS port group includes at least 1 DMRS port, 1< N ≦ M. The grouping is related to the number of layers of transmission data, the number of interferences, and the number of layers of interferences, and an example is shown in embodiment 1.

In the N groups of DMRS port numbers, wherein N is₁The DMRS port group is a signal DMRS port group, N₂The DMRS port groups are interference DMRS port groups. Wherein N is₁+N₂＝N，N₁And N₂Is a positive integer. Wherein, the signal DMRS port group is used for transmitting pilot signals related to data demodulation, and the pilot signals used for estimating interference channel information are transmitted on the interference DMRS port group.

Here, the DMRS port grouping information may be agreed by the base station and the terminal, for example, as shown in embodiment 1. The base station may also notify the terminal through the second signaling, for example, as shown in embodiment 1. The sending of the second signaling may be a semi-static configuration of the higher layer signaling or a dynamic configuration of the physical layer signaling.

Here, the type of each DMRS port group may be a type agreed by the base station and the terminal, or may be transmitted to the terminal by the base station through the third signaling, for example, as shown in embodiment 1.

(A2) Pilot signal transmission on M DMRS ports of transmission node

(A3) The base station configures L quasi co-location parameter sets S₀，…，S_L-1Transmitting the L numbers through a first signalingQuasi co-location parameter set information.

Here, L is equal to or greater than N.

Each parameter set includes at least 1 quasi co-located CSI-RS information. In addition, other parameter information may also be included, and an example of the parameter information of one quasi-co-location parameter set is as follows:

1 CRS configuration parameter information;

1 MBSFN subframe configuration parameter information;

parameter configuration information of 1 ZP CSI-RS;

1 PDSCH starting position;

1 quasi co-located NZP CSI-RS information.

For simplicity of description, set S of L quasi co-location parameters₀，…，S_L-1Written in the form of table 2, i.e. consistent with current LTE without loss of generality, where L is 4, and quasi co-located CSI-RS information is written as qcl NZP CSI-RS.

Here, the transmission node transmits the quasi-co-location information of the N DMRS port groups described in this embodiment (a1) through N fourth signaling. The fourth signaling indicates the L sets S of quasi co-location parameters₁～S_LOne set of (a).

For the terminal, the following operations are carried out to complete the reception of the alignment co-location information:

The terminal obtains information of N DMRS port groups through DMRS port group information agreed with the base station, which is illustrated in embodiment 1. Or the terminal receives a second signaling, and obtains the information of the N DMRS port groups through the second signaling.

Here, the type of each DMRS port group may be base station and terminal-agreed. The terminal may also receive third signaling, where the third signaling may indicate an index of a signal DMRS port group or an index of an interfering DMRS port group.

(B2) And the terminal estimates channel information on a data carrier on the signal DMRS port group and estimates interference channel information on the interference DMRS port group.

With N₁＝N₂The column is illustrated with 1, and the terminal is at N₁Estimating pilot signals related to data demodulation transmitted by TP1 on DMRS port group, and using the pilot signals to estimate channel H on data carrier, and terminal is at N₂And estimating channel information from the interference transmission nodes to the users on each DMRS port group on the interference DMRS ports. For example, the interfering transmission node is TP2, which includes ports 9,10, then the user estimates the channel HI on ports 9, 10.

The L quasi co-location parameter sets S₀，…，S_L-1In accordance with the description of (a3) of the present embodiment.

And the terminal selects the quasi co-location parameter set of the ith DMRS port group from the L quasi co-location parameter sets by using the N fourth signaling received in the step (B1) and the ith fourth signaling, and obtains the quasi co-location information of the DMRS port group according to the selected quasi co-location parameter set. And the terminal determines the CSI-RS of the quasi-co-location of the ith DMRS port group as qcl NZP CSI-RS information in the quasi-co-location parameter set indicated by the ith fourth signaling, wherein i is 1, … and N. For example, qcl NZP CSI-RS in the quasi-co-location parameter set indicated by the first fourth signaling isData DMRS port group G₁-7, 8 quasi co-located NZP CSI-RS, using said qclnZP CSI-RS to estimate DMRS port group G₁Correcting the time offset and the frequency offset of the channel H to obtain H', wherein qcl NZP CSI-RS in the quasi-co-location parameter set indicated by the second fourth signaling is an interference DMRS port group G₂And (910) estimating time offset, frequency offset and the like of interference by using the qcl NZP CSI-RS, and correcting the time offset and the frequency offset of HI to obtain channel HI'. Note that the quasi co-located qcl NZP CSI-RS can also be used to estimate some other large scale information, such as doppler shift, large scale fading, etc.

Preferred embodiment four

For the base station, the following signaling is sent:

(A2) And transmitting pilot signals on M DMRS ports of the transmission node.

Here, L is equal to or greater than N.

1 CRS configuration parameter information;

1 MBSFN subframe configuration parameter information;

parameter configuration information of 1 ZP CSI-RS;

1 PDSCH starting position;

1 quasi co-located NZP CSI-RS information.

Here, the transmission node transmits the quasi-co-location information of the signal DMRS port group among the N DMRS port groups described in this embodiment (a1) through 1 fourth signaling. The fourth signaling indicates the L sets S of quasi co-location parameters₁～S_LOne set of (a).

And the quasi-co-location parameter set indicated by the 1 fourth signaling is quasi-co-location information of the signal DMRS port.

And the quasi-co-location parameter set index of the interference DMRS port is appointed by a reference and a terminal. Such as the minimum N beyond the index of the promised fourteen signalling indicator₂The individual quasi co-located parameter set indices are the quasi co-located parameter set indices of the interference.

Or the CSI-RS pilot sequences of the quasi-co-location of the interference DMRS port group appointed by the terminal and the base station are the same as the CSI-RS pilot sequences of the quasi-co-location of the signal DMRS ports.

Or the base station sends the pilot frequency serial number of the interference DMRS port group to the terminal.

(B2) The terminal estimates channel information on a data carrier on a signal DMRS port group and estimates interference channel information on an interference DMRS port group

Terminal deviceAnd (B1) using the 1 fourth signaling received in (B1), and using the fourth signaling to select a quasi co-location parameter set of the DMRS port group as a signal from the L quasi co-location parameter sets, and obtaining quasi co-location information of the DMRS port group according to the selected quasi co-location parameter set. For example, qcl NZP CSI-RS in the quasi-co-location parameter set indicated by the fourth signaling is data DMRS port group G₁And (3) estimating the time offset and the frequency offset of the DMRS port group G1 by using the qclnZP CSI-RS at the quasi-co-location NZP CSI-RS of {7,8}, and correcting the time offset and the frequency offset of the channel H to obtain H'.

For the quasi-co-location parameter set index of the interference DMRS port group, the quasi-co-location parameter set index may be obtained by one of the following ways:

the terminal obtains the quasi-co-location parameter set index of the interference DMRS port group in a manner appointed by the base station, for example, the minimum N outside the index appointed by the fourth signaling indication₂The individual quasi co-located parameter set indices are the quasi co-located parameter set indices of the interference. For example, if the value of the fourth signaling indicating the DMRS port group is 2, then other values except for 2 are {0, 1, 3}, and the terminal uses the quasi-co-location parameter set corresponding to the minimum index of 0 as the quasi-co-location parameter set index of the first interfering DMRS port group and uses it to find its own quasi-co-location parameter information. If there are more than 1 interfering DMRS port groups, and so on. Or

And the terminal acquires the quasi-co-location information of the interference DMRS port group by using the quasi-co-location CSI-RS pilot sequence of the interference DMRS port group. Without loss of generality, assuming that the quasi-co-location parameter set used by the signal DMRS port indicated by the fourth signaling is ith, the quasi-co-location parameter sets of the interfering DMRS port group may be selected from the remaining L-1 quasi-co-location parameter sets S₀，…S_i-1，S_i+1，…，S_L-1To select. The terminal estimates a quasi co-location parameter set S through an appointed quasi co-location CSI-RS pilot sequence C0 of an interference DMRS port group_jChannel HI corresponding to qcl NZP CSI-RS in (1)_jIn combination with HI_jCalculating a channel parameter PI_jWherein PI_jCan be signal-to-noise ratio, signal-to-noise-ratio, received power, signalDaohi (high-grade)_jThe two norms of (a) and the like.

Selection of PI_jThe largest quasi-co-location parameter set is the quasi-co-location information of the interfering DMRS port group, where j is 0, …, i-1, i +1, … L-1.

The CSI-RS pilot sequence of the quasi-co-location of the interference DMRS port group can be a fixed CSI-RS pilot sequence appointed by the base station and the terminal, or the CSI-RS pilot sequence is the same as the CSI-RS pilot sequence of the quasi-co-location of the signal DMRS port group, or the terminal receives the CSI-RS pilot sequence sent by the base station.

After the quasi-common position of the interference DMRS port group is obtained by the method, estimating the time offset, the frequency offset and the like of the interference by using the qcl NZP CSI-RS, and correcting the time offset and the frequency offset of HI to obtain channel HI'. Note that the quasi co-located qcl NZP CSI-RS can also be used to estimate some other large scale information, such as doppler shift, large scale fading, etc.

Example 4

The embodiment of the invention also provides a storage medium. Optionally, in this embodiment, the storage medium may be configured to store a program code executed by the processing method of the quasi-co-location information provided in the first embodiment.

Optionally, in this embodiment, the storage medium may be located in any one of computer terminals in a computer terminal group in a computer network, or in any one of mobile terminals in a mobile terminal group.

Optionally, in this embodiment, the storage medium is configured to store program code for performing the following steps:

s1, the base station willDividing M demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂Are all positive integers, and N is more than 1 and less than or equal to M;

and S2, the base station sends the quasi co-location information of the N demodulation pilot frequency port groups.

The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for performing the following steps:

s1, the terminal divides M demodulation reference signal demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M;

and S2, the terminal receives the quasi co-location information corresponding to the N demodulation pilot frequency port groups sent by the base station.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for processing quasi-co-location information, comprising:

the base station divides M demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M;

and the base station sends the quasi-co-location information of the N demodulation pilot frequency port groups.

2. The method of claim 1, further comprising:

the base station configures L quasi co-location parameter sets S₀，…，S_L-1Wherein, L is a positive integer;

3. The method of claim 1, further comprising:

4. The method of claim 1, wherein when N is₁When the number of demodulation pilot frequency ports is 1, the base station and the terminal appoint N demodulation pilot frequency port groups G₁，…，G_NG in (1)₁Demodulating pilots for a signalPort group, G₂，…，G_NThe set of pilot ports is demodulated for interference.

5. The method of claim 1,

the base station is in the N₁Pilot signals used for data demodulation are sent on the demodulation pilot port groups; the base station is in the N₂Pilot signals for estimating interference channel information are transmitted on the interference demodulation pilot port groups.

6. The method of claim 1,

the number of transmission layers of the base station transmission data is the same as the number of ports of the signal demodulation pilot frequency port group.

7. The method of claim 6,

the precoding used by the base station for transmitting data is the same as the precoding used by the signal demodulation pilot frequency port group;

the precoding used by the base station for transmitting data is different from the precoding used by the interference demodulation pilot frequency port group.

8. The method of claim 2, wherein the base station is to transmit the quasi co-location information of the N demodulation pilot port groups, comprising:

and the base station sends the quasi-co-location information to the terminal through 1 fourth signaling, wherein the fourth signaling is used for indicating indexes corresponding to the quasi-co-location parameter sets of the N demodulation pilot frequency port groups.

9. The method of claim 8, wherein the parameters of the quasi-co-location parameter set comprise: the base station and the terminal agree on one demodulation pilot port group in the N demodulation pilot port groups, and the measurement pilot information of one quasi-co-location in the quasi-co-location parameter set indicated by the fourth signaling is quasi-co-located.

10. The method of claim 2, wherein the base station is to transmit the quasi co-location information of the N demodulation pilot port groups, comprising:

the base station sends the quasi-co-location information to the terminal through 1 fourth signaling, wherein the fourth signaling is used for indicating N₁And indexes corresponding to quasi-co-location parameter sets of the signal demodulation pilot port groups, wherein the quasi-co-location parameter sets comprise measurement pilot information of 1 quasi-co-location.

11. The method of claim 10, wherein the base station and the terminal agree on at least one of:

12. The method of claim 2, wherein the base station is to transmit the quasi co-location information of the N demodulation pilot port groups, comprising:

and the base station sends the quasi-co-location information to the terminal through N fourth signaling, wherein one fourth signaling in the N fourth signaling is used for indicating a quasi-co-location parameter set index of one demodulation pilot port group in the N demodulation pilot port groups, and the quasi-co-location parameter set comprises 1 quasi-co-location measurement pilot information.

13. The method according to any one of claims 9 to 12,

the quasi co-located measurement pilot information comprises at least one of: quasi co-located CSI-RS resources, quasi co-located CSI-RS configuration, and quasi co-located CSI-RS port groups.

14. A method for processing quasi-co-location information, comprising:

the terminal divides M demodulation reference signal demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M;

and the terminal receives the quasi-common position information corresponding to the N demodulation pilot frequency port groups sent by the base station.

15. The method of claim 14,

a terminal receives a first signaling, wherein the first signaling carries L quasi-co-location parameter sets S for determining₀，…，S_L-1And L is a positive integer.

16. The method of claim 14,

the terminal and the base station appoint grouping information of N demodulation pilot frequency port groups; and/or

17. The method of claim 14, wherein when N is₁When the number of demodulation pilot frequency ports is 1, the terminal and the base station appoint N demodulation pilot frequency port groups G₁，…，G_NG in (1)₁Demodulating a set of pilot ports, G, for a signal₂，…，G_NThe set of pilot ports is demodulated for interference.

18. The method of claim 14, further comprising:

19. The method of claim 15, further comprising:

the terminal receives 1 fourth signaling, where the fourth signaling is used to indicate an index corresponding to a quasi-co-location parameter set of N demodulation pilot port groups;

20. The method of claim 19,

the parameters of the quasi-co-location parameter set comprise: the base station and the terminal agree that one demodulation pilot port group is in the N demodulation pilot port groups, and the measurement pilot information in the quasi-co-location parameter set indicated by the fourth signaling is quasi-co-located.

21. The method of claim 20,

the terminal receives quasi co-location information sent by the base station through 1 fourth signaling, wherein the fourth signaling is used for indicating N₁And indexes corresponding to quasi-co-location parameter sets of the signal demodulation pilot port groups, wherein the quasi-co-location parameter sets comprise measurement pilot information of 1 quasi-co-location.

22. The method of claim 20,

the terminal obtains the quasi co-location information of the interference demodulation pilot frequency port group according to the appointed mode with the base station, or

23. The method of claim 22,

the pilot sequence of the quasi co-location measurement pilot information of the interference demodulation pilot port group is determined at least by one of the following modes:

a pilot frequency sequence of fixed quasi-co-location measurement pilot frequency information appointed by the terminal and the base station;

24. The method of claim 14,

the terminal receives N fourth signaling, and the terminal obtains quasi co-location information of an ith group of demodulation pilot port groups according to the ith fourth signaling, wherein one fourth signaling in the N fourth signaling is used for indicating a quasi co-location parameter set index of one demodulation pilot port group in the N demodulation pilot port groups, and the quasi co-location parameter set comprises 1 quasi co-location measurement pilot information.

25. The method of any one of claims 20-24,

26. A quasi-co-location information processing device applied to a base station comprises:

a first determining module for dividing the M demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M;

and the sending module is used for sending the quasi-co-location information of the N demodulation pilot frequency port groups.

27. A processing device of quasi-co-location information, applied to a terminal, includes:

a second determining module for dividing the M demodulation reference signal demodulation pilot frequency ports into N demodulation pilot frequency port groups G₁，…，G_NWherein N is₁The demodulation pilot frequency port group is a signal demodulation pilot frequency port group, N₂The demodulation pilot frequency port groups are interference demodulation pilot frequency port groups, M, N₁And N₂All are positive integers, and N is more than 1 and less than or equal to M;