CN108668300B - Method and device for processing channel state information reference signal - Google Patents

Abstract

The present invention discloses a channel state information reference signal (CSI-RS) processing method, comprising: detecting whether the CSI-RS is enabled and whether the configuration parameters of the CSI-RS have changed, wherein the CSI-RS includes zero-power CSI -RS and non-zero-power CSI-RS; when it is detected that the CSI-RS is enabled and the configuration parameters of the CSI-RS change, according to the theoretical value of the CSI-RS time-frequency resource location information, Long Term Evolution (LTE) standard and paging configuration parameters, and determine the CSI-RS subframe that satisfies the real existence condition; perform conflict processing on the zero-power CSI-RS and non-zero-power CSI-RS in the real existing CSI-RS subframe. The invention also discloses a CSI-RS processing device.

Description

Method and device for processing channel state information reference signal

technical field

The present invention relates to a signal processing technology in the communication field, and in particular, to a method and device for processing a Channel State Information Reference Signal (CSI-RS, Channel State Information Reference Signal).

Background technique

In a Long Term Evolution (LTE, Long Term Evolution)/Long Term Evolution Advanced (LTE-A, Long Term Evolution Advanced) system, for an evolved base station (eNB, Evolved NodeB), after layer mapping and precoding are completed, the physical A downlink shared channel (PDSCH, Physical Downlink Shared Channel) is mapped to a resource element (RE, Resource Element); wherein, RE is the basic unit of downlink physical channel resource scheduling on the LTE/LTE-A system, and RE is a It is composed of an Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) symbol and a subcarrier in the frequency domain. Therefore, generally speaking, the resource block (RB, Resource Block) of the PDSCH is mapped to the time-frequency resource, and finally the mapping of the RE of the PDSCH on the time-frequency resource is formed.

Before mapping the PDSCH, the eNB allocates logical resource blocks, namely virtual resource blocks (VRBs, Virtual Resource Blocks) according to the PDSCH resource indication mode, and completes the mapping of VRBs to physical resource blocks (PRBs, Physical Resource Blocks). For user equipment (UE, User Equipment), it is necessary to obtain the mapping method from VRB to PRB through the resource allocation type (RAT, ResourceAllocation Type) indicated by a certain downlink control information (DCI, Downlink Control Information) format, and then parse the DCI In order to obtain the distribution position of the PRB in the bandwidth.

In the LTE/LTE-A system, for the RBs allocated to the PDSCH, not all REs are allocated to the PDSCH for business purposes. Among them, according to different configurations, the allocated resources also include cell-specific reference signals (CELL-RS, Cell Specific Reference Signal), User Equipment Specific Reference Signal (UE-RS, UE Specific Reference Signal); in addition, there are CSI-RS, Multicast Broadcast Single Frequency Network Reference Signal (MBSFN-RS, Multicast Broadcast Single Frequency Network Reference Signal) on some subframes Network Reference Signal), Positioning Reference Signal (P-RS, Positioning Reference Signal), Primary Synchronization Signal (PSS, Primary Synchronization Signal), Secondary Synchronization Signal (SSS, Secondary Synchronization Signal), and Physical Broadcast Channel (PBCH, Physical Broadcast Channel) ), since the RBs occupied by the signals on each channel have different positions in the time domain and frequency domain, and conflicts may occur between individual signals, it is necessary to comprehensively consider how to deal with these signals.

In order to finally decode PDSCH, various reference signals (RS, Reference Signal), synchronization signals, broadcast signals, physical downlink control signals, etc. need to be deducted from all RBs allocated to PDSCH. , Cyclic Prefix) mode, subframe number, port number, transmission mode, and even the version of the 3GPP protocol is different, the location and presence of individual signals will vary with the parameter combination, and there will be a variety of complex situations.

In the 3GPP R10 release, a new reference signal CSI-RS was introduced, where the CSI-RS is used for channel measurement, and through the measurement of the CSI-RS, the precoding matrix index (PMI, PrecodingMatrix Indicator), channel quality information indicator (CQI, Channel Quality Indicator) and rank indicator (RI, Rank Indicator). The eNB can perform dynamic service scheduling for the current UE according to the measurement information PMI, CQI, and RI. The CSI-RS only exists in the LTE-A 3GPP 36.211 protocol starting from the R10 version, and the specific description is as follows: The LTE-A R10 protocol does not exist in the same sub-system in the general case (that is, the CSI-RS does not exist in the same substation with other signals that may collide. The distribution period of the CSI-RS in the frame, and the time-frequency position (k, 1) give the description and the following constraints:

(1) Does not coexist with special subframes;

(2) It is impossible to coexist with the subframes of the conflicting synchronization signal, PBCH, and System Information Block 1 (SIB1, System Information Block 1);

(3) Does not co-exist with subframes configured to transmit paging.

However, the above constraints do not provide relevant procedures or methods for whether the CSI-RS actually exists in the end.

In special cases, that is, candidates that theoretically satisfy the CSI-RS existence period and subframe number, CSI-RS subframes may be subject to the above three conditions, as well as zero-power CSI-RS and non-zero-power CSI-RS collisions, etc. In reality, there is no certain CSI-RS. Therefore, whether there is a specific CSI-RS in the final real scene, it needs to consider whether the position (k, l) of a certain time-frequency RE in a subframe or a subframe is related to the synchronization signal (PSS/SSS), PBCH, The REs where SIB1, paging signals, etc. are located conflict.

Among them, since the paging signal is decoded by SIB2 and then sent by the upper layer to the physical layer through signaling, the resource location may not be unique, and the resource configuration parameters of zero-power CSI-RS and non-zero-power CSI-RS are sent out The methods are different, so that the non-zero power CSI-RS can only determine the resource configuration index after the bitmap is reversed; in addition, when the zero power CSI-RS and the non-zero power CSI-RS Conflicts also occur. At this time, the conditions that need to be considered and judged are doubled, resulting in a large overhead for operation judgment and implementation.

In addition, in the LTE-based UE system, the channel estimation module, PDSCH decoding module, and channel quality information feedback module all need to use individual or all parameters in the CSI-RS related parameters. To calculate the individual CSI-RS parameters used by this module, it is also necessary to complete the complex calculation and judgment of the real subframe and time-frequency resources where the CSI-RS is located. Each module needs to be calculated separately, which can easily lead to timing coordination problems. Based on the above reasons, the existing design may involve the calculation of a large number of CSI-RS positions and other related data, resulting in tedious calculation, large amount of calculation, tight timing and finally caused by the whole process. decoding problem.

SUMMARY OF THE INVENTION

In view of this, the embodiments of the present invention are expected to provide a CSI-RS processing method and device, which at least solve the above problems existing in the prior art, can quickly determine the time-frequency resource location of the real CSI-RS, and optimize and reduce the number of The modules share the calculation amount of CSI-RS data, which greatly reduces the time overhead and improves the processing efficiency.

In order to achieve the above-mentioned purpose, the technical scheme of the embodiment of the present invention is realized as follows:

An embodiment of the present invention provides a CSI-RS processing method, the method includes:

Detecting whether CSI-RS is enabled and whether the configuration parameters of CSI-RS have changed, wherein the CSI-RS includes zero-power CSI-RS and non-zero-power CSI-RS;

When it is detected that the CSI-RS is enabled and the configuration parameters of the CSI-RS change, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, it is determined that the actual existence conditions are met. CSI-RS subframe;

Conflict processing is performed on the zero-power CSI-RS and the non-zero-power CSI-RS in the real CSI-RS subframe.

In the above solution, after judging the CSI-RS subframe that meets the real existence condition, the method further includes: saving the parameter information of the CSI-RS subframe that meets the real existence condition to a preset CSI-RS subframe. RS shared database.

In the above solution, the parameter information of the CSI-RS subframe includes: subframe number, frame number, existing quantity, time-frequency resource location information, and CSI-RS presence flag information of the actual CSI-RS.

In the above scheme, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, it is determined that the CSI-RS subframes that meet the real existence conditions include:

According to the theoretical value of the CSI-RS time-frequency resource location information, determine whether the CSI-RS collides with any one of PSS, SSS, and broadcast signals;

If the CSI-RS does not collide with any of PSS, SSS, and broadcast signals, according to the LTE standard, it is determined whether the CSI-RS is compatible with a Time Division Duplexing (TDD, Time Division Duplexing) special subframe or Any one of the even-numbered subframes 5 of the SIB1 where TDD and Frequency Division Duplexing (FDD, Frequency Division Duplexing) are located collide;

If the CSI-RS does not conflict with any of the TDD special subframes or the even-numbered subframes 5 of SIB1 where TDD and FDD are located, calculate and determine whether the CSI-RS is a The paging subframe under the current configuration, if not, the CSI-RS is a CSI-RS subframe that satisfies the real existence condition.

In the above scheme, the judging whether the CSI-RS collides with any one of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located, including:

Compare the theoretical value of the subframe where the CSI-RS is located and the time-frequency resource location information with the subframe and time of the PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located. If the CSI-RS and any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located exist in the same subframe or the same subframe If the corresponding time-frequency resource positions in the frame are the same, the CSI-RS collides with any of PSS, SSS, broadcast signal, TDD special subframe, and even frame subframe 5 of SIB1 where TDD and FDD are located.

In the above solution, performing conflict processing on the zero-power CSI-RS and non-zero-power CSI-RS in the real CSI-RS subframe includes:

According to the time-frequency resource position information of the real zero-power CSI-RS, remove the resource elements of the zero-power CSI-RS that conflict with the time-frequency resource position information of the non-zero power CSI-RS; calculate the real existence and non-zero power The subframe where the time-frequency resource position information of the CSI-RS does not conflict with the zero-power CSI-RS, the time-frequency resource position, and the number of existing zero-power CSI-RSs are stored in the CSI-RS shared database; The subframe where the power CSI-RS is located, the time-frequency resource location, and the existing quantity are stored in the CSI-RS shared database.

An embodiment of the present invention provides a CSI-RS processing method, the method includes:

Detect whether the CSI-RS is enabled and whether the configuration parameters of the CSI-RS and the paging configuration parameters have changed; when it is detected that the CSI-RS is enabled and the configuration parameters of the CSI-RS and the paging configuration parameters have changed, According to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, determine the CSI-RS subframe that satisfies the real existence condition;

Acquire the CSI-RS subframes that meet the real existence conditions, and save the parameter information of the CSI-RS subframes that meet the real existence conditions in a preset CSI-RS shared database;

According to the parameter information of the CSI-RS subframes actually existing in the CSI-RS sharing database, channel estimation, PDSCH decoding, and feedback calculation of channel quality information are shared and completed.

In the above scheme, according to the parameter information of the CSI-RS subframes that actually exist in the CSI-RS shared database, the sharing completes the channel estimation, the decoding of the PDSCH and the feedback calculation of the channel quality information, including:

Read the parameter information of the real CSI-RS subframe in the CSI-RS shared database, the parameter information includes: the subframe number, frame number, existing quantity, time-frequency resource location information of the real CSI-RS , and CSI-RS presence flag information;

Determine the number of CSI-RS-related resources and time-frequency resource location parameters for configuring hardware resource units according to the number of existing CSI-RSs and time-frequency resource location information, and complete PDSCH decoding according to the hardware resource units;

According to the subframe number, frame number and time-frequency resource location information of the shared real CSI-RS subframe, the feedback calculation of the channel quality information is completed in the CQI, PMI or RI feedback link.

An embodiment of the present invention provides a CSI-RS processing device, the device includes: a first detection module, a first judgment module, and a conflict processing module; wherein,

the first detection module, configured to detect whether the CSI-RS is enabled and whether the configuration parameters of the CSI-RS have changed, wherein the CSI-RS includes a zero-power CSI-RS and a non-zero-power CSI-RS;

The first judgment module is configured to detect that the CSI-RS is enabled and the configuration parameters of the CSI-RS change, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters to determine the CSI-RS subframes that meet the real existence conditions;

The conflict processing module is configured to perform conflict processing on the zero-power CSI-RS and the non-zero-power CSI-RS in the real CSI-RS subframe.

In the above solution, after the first judging module judges the CSI-RS subframes that meet the real existence conditions, the apparatus further includes: a first shared storage module, configured to store the CSI-RS subframes that meet the real existence conditions The parameter information of the subframe is stored in a preset CSI-RS shared database.

In the above solution, the first judgment module is specifically configured to: according to the theoretical value of the CSI-RS time-frequency resource location information, judge whether the CSI-RS is in phase with any one of PSS, SSS, and broadcast signals. conflict;

If the CSI-RS does not collide with any of PSS, SSS and broadcast signals, according to the LTE standard, it is judged whether the CSI-RS is compatible with a TDD special subframe or an even-numbered frame subframe of SIB1 where TDD and FDD are located. any one of frame 5 collides;

If the CSI-RS does not conflict with any of the TDD special subframes or the even-numbered subframes 5 of SIB1 where TDD and FDD are located, calculate and determine whether the CSI-RS is a The paging subframe under the current configuration, if not, the CSI-RS is a CSI-RS subframe that satisfies the real existence condition.

In the above scheme, the judging whether the CSI-RS collides with any one of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located, including:

Compare the theoretical value of the subframe where the CSI-RS is located and the time-frequency resource location information with the subframe and time of the PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located. If the CSI-RS and any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located exist in the same subframe or the same subframe If the corresponding time-frequency resource positions in the frame are the same, the CSI-RS collides with any of PSS, SSS, broadcast signal, TDD special subframe, and even frame subframe 5 of SIB1 where TDD and FDD are located.

In the above scheme, the conflict processing module is specifically configured to: remove the zero-power CSI that collides with the time-frequency resource location information of non-zero-power CSI-RS according to the time-frequency resource location information of the zero-power CSI-RS that actually exists -RS resource unit; calculate the subframe, time-frequency resource position, and the number of the zero-power CSI-RS that does not conflict with the time-frequency resource position information of the non-zero-power CSI-RS, and save it to the CSI -In the RS shared database; and, save the subframe where the real non-zero power CSI-RS is located, the time-frequency resource location, and the existing quantity in the CSI-RS shared database.

An embodiment of the present invention further provides a CSI-RS processing device, the device includes: a second detection module, a second judgment module, an acquisition module, a second shared storage module, and a shared processing module; wherein,

the second detection module, configured to detect whether the CSI-RS is enabled and whether the configuration parameters of the CSI-RS and the paging configuration parameters have changed;

The second judgment module is used to detect that the CSI-RS is enabled and the configuration parameters of the CSI-RS and the paging configuration parameters change, according to the theoretical value of the CSI-RS time-frequency resource location information, LTE standard, paging configuration parameters, and determine the CSI-RS subframes that meet the real existence conditions;

The obtaining module is used to obtain the CSI-RS subframes that meet the real existence conditions;

the second shared saving module, configured to save the parameter information of the CSI-RS subframes that meet the real existence conditions in a preset CSI-RS shared database;

The sharing processing module is configured to share and complete channel estimation, PDSCH decoding and feedback calculation of channel quality information according to the parameter information of the CSI-RS subframes actually existing in the CSI-RS sharing database.

In the above scheme, the shared processing module is specifically used for:

Read the parameter information of the real CSI-RS subframe in the CSI-RS shared database, the parameter information includes: the subframe number, frame number, existing quantity, time-frequency resource location information of the real CSI-RS , and CSI-RS presence flag information;

Determine the number of CSI-RS-related resources and time-frequency resource location parameters for configuring hardware resource units according to the number of existing CSI-RSs and time-frequency resource location information, and complete PDSCH decoding according to the hardware resource units;

According to the subframe number, frame number and time-frequency resource location information of the shared real CSI-RS subframe, the feedback calculation of the channel quality information is completed in the CQI, PMI or RI feedback link.

The CSI-RS processing method and device provided by the embodiments of the present invention detect whether the CSI-RS is enabled and whether the configuration parameters of the CSI-RS have changed, wherein the CSI-RS includes zero-power CSI-RS and non-zero power CSI-RS; when it is detected that the CSI-RS is enabled and the configuration parameters of the CSI-RS change, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, it is determined that the CSI-RS subframes with real existence conditions; collision processing is performed on the zero-power CSI-RS and non-zero-power CSI-RS in the real existing CSI-RS subframes. In this way, not only can the real subframes where zero-power CSI-RS and non-zero-power CSI-RS are located, and the location of time-frequency resources be accurately judged, but also the process is optimized, the number of complex calculations is reduced, and complex and repeated calculations are avoided. and the timing problem caused thereby, to achieve the effect of quickly completing the calculation of the time and position of the CSI-RS; at the same time, for the PDSCH decoding and the CSI channel quality information feedback process, the embodiment of the present invention shares the CSI-RS data by The calculation process of multi-module CSI-RS data is reduced or avoided, time overhead is greatly reduced, and processing efficiency is improved.

Description of drawings

FIG. 1 is a schematic flowchart of a CSI-RS processing method according to Embodiment 1 of the present invention;

FIG. 2 is a schematic flowchart of a specific implementation of a CSI-RS processing method provided in Embodiment 2 of the present invention;

FIG. 3 is a schematic flowchart of another CSI-RS processing method according to Embodiment 3 of the present invention;

FIG. 4 is a schematic flowchart of a specific implementation of another CSI-RS processing method according to Embodiment 4 of the present invention;

FIG. 5 is a schematic diagram of the composition and structure of an apparatus for processing CSI-RS according to Embodiment 5 of the present invention;

FIG. 6 is a schematic structural diagram of another CSI-RS processing apparatus according to Embodiment 6 of the present invention.

Detailed ways

In order to be able to understand the features and technical contents of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the present invention.

Example 1

As shown in FIG. 1 , the implementation flow of the CSI-RS processing method in the embodiment of the present invention includes the following steps:

Step 101: Detect whether CSI-RS is enabled and whether configuration parameters of CSI-RS change, wherein the CSI-RS includes zero-power CSI-RS and non-zero-power CSI-RS;

Here, the configuration parameters of the CSI-RS include: resource configuration parameters and subframe configuration parameters.

Here, by detecting the data related to the configuration parameters of the CSI-RS issued by the high-layer signaling, the configuration parameters of the CSI-RS issued this time are stored, and the configuration parameters of the CSI-RS issued by the high-layer signaling last time are saved. By comparison, it is determined whether the configuration parameters of the CSI-RS delivered by the high-layer signaling this time have changed.

It should be noted that, if the CSI-RS is enabled, but the configuration parameters of the CSI-RS have not changed, then the calculation process of the theoretical CSI-RS time-frequency resource position and the CSI-RS specified in the 36.211 protocol are not required at this time. The subframe calculation process is used to calculate the subframe where the theoretical CSI-RS is located and the time-frequency resource position.

Step 102: When it is detected that the CSI-RS is enabled and the configuration parameters of the CSI-RS change, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, it is determined that the Conditional CSI-RS subframes exist;

This step specifically includes: according to the theoretical value of the CSI-RS time-frequency resource location information, judging whether the CSI-RS collides with any one of PSS, SSS, and broadcast signals;

If the CSI-RS does not collide with any of PSS, SSS and broadcast signals, according to the LTE standard, it is judged whether the CSI-RS is compatible with a TDD special subframe or an even-numbered frame subframe of SIB1 where TDD and FDD are located. any one of frame 5 collides;

If the CSI-RS does not conflict with any of the TDD special subframes or the even-numbered subframes 5 of SIB1 where TDD and FDD are located, calculate and determine whether the CSI-RS is a The paging subframe under the current configuration, if not, the CSI-RS is a CSI-RS subframe that satisfies the real existence condition.

Wherein, the judging whether the CSI-RS collides with any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located includes:

Compare the theoretical value of the subframe where the CSI-RS is located and the time-frequency resource location information with the subframe and time of the PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located. If the CSI-RS and any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located exist in the same subframe or the same subframe If the corresponding time-frequency resource positions in the frame are the same, the CSI-RS collides with any of PSS, SSS, broadcast signal, TDD special subframe, and even frame subframe 5 of SIB1 where TDD and FDD are located.

Here, after judging the CSI-RS subframe that meets the real existence condition, the method further includes: saving the parameter information of the CSI-RS subframe that meets the real existence condition to a preset CSI-RS sharing in the database.

The parameter information of the CSI-RS subframe includes: subframe number, frame number, existing quantity, time-frequency resource location information, and CSI-RS existence flag information of the actual CSI-RS.

Here, if it is determined that the CSI-RS collides with any of the PSS, SSS, and broadcast signals, or the CSI-RS and the TDD special subframe or the even-numbered frame subframe 5 of the SIB1 where the TDD and FDD are located When any one of them collides, it is processed according to the fact that there is no non-zero power CSI-RS in the next subframe n+1 of the current subframe n; if the zero power CSI-RS is currently enabled, you can refer to the above steps to judge whether the Zero-power CSI-RS with real existence conditions, and save the subframe number, frame number, existing quantity, time-frequency resource location information, and CSI-RS existence flag information of the real zero-power CSI-RS in the CSI-RS RS shared database.

Step 103: Perform conflict processing on the zero-power CSI-RS and the non-zero-power CSI-RS in the real CSI-RS subframe.

This step specifically includes: according to the time-frequency resource location information of the zero-power CSI-RS that actually exists, remove the resource elements of the zero-power CSI-RS that conflict with the time-frequency resource location information of the non-zero-power CSI-RS; The subframe where the zero-power CSI-RS that does not conflict with the time-frequency resource position information of the non-zero-power CSI-RS, the time-frequency resource position, and the number of existences are stored in the CSI-RS shared database; and, save The subframe where the real non-zero-power CSI-RS is located, the time-frequency resource location, and the existing quantity are stored in the CSI-RS shared database.

The embodiment of the present invention provides a simplified and complete process for judging whether CSI-RS actually exists, which greatly reduces the amount of calculation, optimizes the processing process of CSI-RS, and also avoids high-level parameter delivery errors caused by the base station. And the subsequent PDSCH decoding problems that may occur.

Embodiment 2

The specific implementation process of the CSI-RS processing method according to the embodiment of the present invention will be further described in detail below.

FIG. 2 shows a schematic diagram of a specific implementation flowchart of a CSI-RS processing method according to an embodiment of the present invention, as shown in FIG. 2 , including the following steps:

Step 201: Detect the data related to the configuration parameters of the CSI-RS issued by the high-level signaling, save the configuration parameters of the CSI-RS issued this time, and compare with the configuration parameters of the CSI-RS issued last time, If the CSI-RS is enabled and the configuration parameters of the CSI-RS have changed, go to the next step; if the CSI-RS is not enabled, go to step 211; if the CSI-RS is enabled, but the CSI-RS configuration If the parameters do not change, go to the next step;

Here, if the CSI-RS is enabled, but the configuration parameters of the CSI-RS do not change, at this time, after the data related to the configuration parameters of the CSI-RS is calculated and saved once, in the next calculation process, the basis The calculation process of the theoretical CSI-RS time-frequency resource position and the calculation process of the CSI-RS subframe specified in the 36.211 protocol are used to calculate the subframe where the theoretical CSI-RS is located and the steps of the time-frequency resource position.

Here, the configuration parameters of the CSI-RS include: resource configuration parameters and subframe configuration parameters; the CSI-RS includes zero-power CSI-RS and non-zero-power CSI-RS.

Step 202: Assuming that the current subframe is n, determine whether the time-frequency resource location of the non-zero power CSI-RS has been calculated before under the current configuration parameters, if so, jump to step 204, otherwise continue to the next step;

Step 203: Calculate the theoretical time-frequency resource position (k, 1) of each symbol of the non-zero power CSI-RS according to the configuration of the high-level signaling, according to the 36.211 protocol formula, and set the relevant calculated flag, and then continue to the next step;

In this step, how to calculate the theoretical time-frequency resource position (k, l) of each symbol of the non-zero power CSI-RS according to the 36.211 protocol formula belongs to the prior art, and will not be repeated here.

Step 204: According to the theoretical time-frequency resource position (k, 1) of the non-zero power CSI-RS, determine whether the time-frequency resource positions of all non-zero power CSI-RS in the next subframe n+1 are the same as the PSS, Any one of the SSS and the broadcast signal collides, if there is a conflict, jump to step 211, that is, according to the absence of non-zero power CSI-RS in the next subframe n+1; otherwise, continue to the next step;

Specifically, the theoretical value of the subframe where the CSI-RS is located and the time-frequency resource location information are compared with the subframe where the CSI-RS is located and the time-frequency resource location of the PSS, SSS, and broadcast signal. , SSS, and broadcast signals exist in the same subframe or the corresponding time-frequency resource positions in the same subframe are the same, then the CSI-RS collides with any of PSS, SSS, and broadcast signals.

Step 205: According to the type of the current LTE frame structure, determine whether the next subframe n+1 is the TDD special subframe 1, 6, or the even-numbered frame subframe 5 of the SIB1 where the TDD or FDD is located, and set the flag Temp1;

Step 206: judge whether Temp1 is TRUE, if so, jump to step 211, otherwise continue to the next step;

Here, if Temp1 is TRUE, it means that the next subframe n+1 is TDD special subframes 1 and 6, or any of the even-numbered subframes 5 of SIB1 where TDD and FDD are located; if the next subframe n If +1 does not satisfy TDD special subframes 1 and 6, or is any of the even-numbered subframes 5 of SIB1 where TDD and FDD are located, the flag Temp1 is set to FALSE.

Step 207: According to the 36.211 protocol formula and the CSI-RS subframe configuration issued by the high-level signaling, determine whether the next subframe n+1 satisfies the subframe condition of the theoretical non-zero power CSI-RS, and set the flag Temp2;

Here, if Temp2 is TRUE, it means that the subframe condition of non-zero power CSI-RS is satisfied; if Temp2 is FALSE, it means that the subframe condition of non-zero power CSI-RS is not satisfied.

Step 208: According to the paging configuration parameters carried in the message delivered by the high-level signaling, determine whether the next subframe n+1 is the paging subframe under the current configuration, and set the flag Temp3;

Here, if Temp3 is TRUE, it means that no paging subframe conditions are met; if Temp3 is FALSE, it means that paging subframe conditions are met.

Step 209: Perform a logical AND operation on Temp2 and Temp3, and determine whether the result of the operation is TRUE, if so, continue to the next step, otherwise, consider that the next subframe n+1 is not a non-zero power CSI-RS subframe, and set the correlation at this time. mark, and jump to step 211;

Step 210: Determine that the next subframe n+1 is a real CSI-RS subframe, and set the CSI-RS subframe existence flag to TRUE;

Here, after it is determined that the next subframe n+1 is a real CSI-RS subframe, the parameter information of the CSI-RS subframe that satisfies the real existence condition needs to be saved to the preset CSI-RS sharing in the database.

Step 211: Determine whether the zero-power CSI-RS is enabled, if not, skip to the next step, otherwise, calculate the theoretically existing zero-power CSI-RS subframe and time-frequency resource location ( k, 1), then perform collision detection and processing on zero-power CSI-RS and non-zero-power CSI-RS, and determine the subframe and time-frequency resource position where the real zero-power CSI-RS or non-zero-power CSI-RS is located.

Here, the process of collision detection and processing for zero-power CSI-RS and non-zero-power CSI-RS is roughly as follows: according to the time-frequency resource location information of the real zero-power CSI-RS, remove and non-zero-power CSI-RS The resource unit of the zero-power CSI-RS whose time-frequency resource location information collides; calculate the subframe, time-frequency resource where the real zero-power CSI-RS that does not conflict with the time-frequency resource location information of the non-zero power CSI-RS is located The location and the number of existences are stored in the CSI-RS shared database; and the subframes where the real non-zero power CSI-RS is located, the time-frequency resource location, and the number of existences are stored in the CSI-RS shared database. middle.

In this step, if the zero-power CSI-RS is enabled, the subframe where the zero-power CSI-RS is located and the time-frequency resource position within the subframe need to be calculated first. The calculation process can be performed according to steps 201-210, that is, That said, the first ten steps are common to both zero-power CSI-RS and non-zero-power CSI-RS.

It should be noted that, for the calculation of zero-power CSI-RS, the following two points need to be paid attention to:

(1) The mapping mode of the zero-power CSI-RS configuration issued by the high-level signaling is different. It is issued through the 16-bit Zero Power CSI-RS bit bitmap issued by the high-level signaling, and the bit sequence is mapped to the resource configuration table ( The index of "CSI reference singalconfiguration" in Table 6.10.5.2-1 or Table 6.10.5.2-2) of 3GPP36.211 shall correspond to the reverse order of bit order;

(2) If the position of zero-power CSI-RS and non-zero-power CSI-RS collide (for example, the parameters issued by the enb high layer fail to actively avoid the conflict), the transmission is performed according to the non-zero-power CSI-RS, and zero-power CSI does not need to be sent at this time. -RS.

Step 212: Configure hardware resource units according to the calculated existence flags of zero-power CSI-RS and non-zero-power CSI-RS and their respective time-frequency resource positions.

In addition, it should be noted that in the above processing process, subframe continuity detection can be added in step 201, that is, if the timing unit has not been adjusted for more than 1 ms, that is, the subframe numbers are continuous, and the CSI-RS The resource configuration and subframe configuration are unchanged, then the frequency of calculating CSI-RS resources can be reduced in the above steps 203 to 209, that is, the possible CSI-RS time-frequency resource positions and subframes calculated under the current configuration are saved in the first calculation. The data is used for subsequent multiplexing to greatly reduce the secondary calculation process. Specifically, according to the actual situation, every 10ms or 10230ms or longer, follow the above steps to complete a CSI-RS presence detection. If the result is good, you can directly look up the table and read it, so as to greatly reduce the calculation amount and time overhead of CSI-RS, and improve the efficiency.

Embodiment 3

FIG. 3 shows a schematic flowchart of another CSI-RS processing method according to an embodiment of the present invention, as shown in FIG. 3 , including the following steps:

Step 301: Detect whether the CSI-RS is enabled, and whether the configuration parameters of the CSI-RS and the paging configuration parameters have changed; it is detected that the CSI-RS is enabled and the configuration parameters of the CSI-RS and the paging configuration parameters When there is a change, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, determine the CSI-RS subframe that satisfies the real existence condition;

Here, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, the CSI-RS subframes that meet the real existence conditions are determined, including:

According to the theoretical value of the CSI-RS time-frequency resource location information, determine whether the CSI-RS collides with any one of PSS, SSS, and broadcast signals;

If the CSI-RS does not collide with any of PSS, SSS and broadcast signals, according to the LTE standard, it is judged whether the CSI-RS is compatible with a TDD special subframe or an even-numbered frame subframe of SIB1 where TDD and FDD are located. any one of frame 5 collides;

If the CSI-RS does not conflict with any of the TDD special subframes or the even-numbered subframes 5 of SIB1 where TDD and FDD are located, calculate and determine whether the CSI-RS is a The paging subframe under the current configuration, if not, the CSI-RS is a CSI-RS subframe that satisfies the real existence condition.

Here, the parameter information of the CSI-RS subframe that satisfies the real existence condition includes: subframe number, frame number, existing quantity, time-frequency resource location information, and CSI-RS existence flag information of the real CSI-RS .

Step 302: Acquire the CSI-RS subframes that meet the real existence conditions, and save the parameter information of the CSI-RS subframes that meet the real existence conditions in a preset CSI-RS shared database;

Step 303: According to the parameter information of the CSI-RS subframes actually existing in the CSI-RS sharing database, share and complete the channel estimation, the decoding of the PDSCH, and the feedback calculation of the channel quality information.

This step specifically includes: reading the parameter information of the real CSI-RS subframe in the CSI-RS shared database, where the parameter information includes: the subframe number, frame number, existing quantity, Time-frequency resource location information, and CSI-RS presence flag information;

Determine the number of CSI-RS-related resources and time-frequency resource location parameters for configuring hardware resource units according to the number of existing CSI-RSs and time-frequency resource location information, and complete PDSCH decoding according to the hardware resource units;

According to the subframe number, frame number and time-frequency resource location information of the shared real CSI-RS subframe, the feedback calculation of the channel quality information is completed in the CQI, PMI or RI feedback link.

The embodiment of the present invention utilizes the CSI-RS related data stored in the above-mentioned CSI-RS sharing database to realize data sharing for subsequent PDSCH decoding and feedback processes such as CQI/PMI/RI related to the channel quality indication, avoiding the need for different modules and The possibility of repeating the calculation of the CSI-RS not only improves the work efficiency, but also saves a lot of time for subsequent complex processing.

Embodiment 4

The specific implementation process of another CSI-RS processing method according to the embodiment of the present invention will be further described in detail below.

FIG. 4 shows a schematic flowchart of a specific implementation of another CSI-RS processing method according to an embodiment of the present invention, as shown in FIG. 4 , including the following steps:

Step 401: the system is powered on, and the CSI-RS shared database is initialized;

Here, the parameter information of the CSI-RS subframe is stored in the CSI-RS shared database; the parameter information of the CSI-RS subframe includes: the subframe number, frame number, number of existing CSI-RSs, Time-frequency resource location information, and CSI-RS presence flag information. The initial value of the CSI-RS presence flag information is set to FALSE.

Step 402: Assuming that the current subframe is n, determine whether the next subframe n+1 is a real CSI-RS subframe according to the current subframe n, and calculate the zero-power CSI-RS in the real CSI-RS subframe. Subframes and time-frequency resource positions where RS and non-zero power CSI-RS are located;

Here, it may be determined whether a subframe is a real CSI-RS subframe with reference to the CSI-RS processing method in the first embodiment of the present invention or the second embodiment of the present invention, which will not be described in detail in this embodiment of the present invention. .

Step 403: Write and save the subframe and time-frequency resource positions where the zero-power CSI-RS and non-zero-power CSI-RS in the real CSI-RS subframe are located in the CSI-RS shared database;

Here, in addition to writing and saving the subframes and time-frequency resource positions where the zero-power CSI-RS and non-zero-power CSI-RS in the real CSI-RS subframes are located in the CSI-RS shared database, the real Information such as frame numbers and existing quantities of zero-power CSI-RS and non-zero-power CSI-RS in the existing CSI-RS subframes are written and stored in the CSI-RS shared database.

Step 404: In the n+1 or n+2 subframes, read the information in the CSI-RS shared database in the channel estimation, PDSCH decoding process and CQI/PMI/RI feedback link process, respectively, to obtain the real CSI - Information such as the number of RSs and subframe numbers;

Step 405: Determine the number of CSI-RS-related resources and time-frequency resource location parameters for configuring hardware resource units according to the quantity information of CSI-RSs and time-frequency resource location information that actually exist, and complete PDSCH decoding according to the hardware resource units; According to the subframe number, frame number, time-frequency resource location and other information of the shared real CSI-RS subframe, the CQI/PMI/RI calculation module completes the feedback calculation of the channel quality information;

Here, how to complete the decoding of PDSCH according to the hardware resource unit, and how to use the CQI/PMI/RI calculation module according to the subframe number, frame number, time-frequency resource location and other information of the shared real CSI-RS subframe Completing the feedback calculation of the channel quality information belongs to the prior art and will not be repeated here.

Step 406: After clearing the information in the CSI-RS shared database and resetting the existence flag of the CSI-RS to FALSE, the current processing flow is ended.

Embodiment 5

To implement the above method, an embodiment of the present invention further provides a CSI-RS processing device. As shown in FIG. 5 , the device includes a first detection module 501, a first judgment module 502, and a conflict processing module 503; wherein,

The first detection module 501 is configured to detect whether CSI-RS is enabled and whether configuration parameters of CSI-RS have changed, wherein the CSI-RS includes zero-power CSI-RS and non-zero-power CSI-RS;

The first judgment module 502 is configured to detect that the CSI-RS is enabled and the configuration parameters of the CSI-RS change, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, the paging Configure parameters to determine the CSI-RS subframes that meet the real existence conditions;

The conflict processing module 503 is configured to perform conflict processing on the zero-power CSI-RS and the non-zero-power CSI-RS in the real CSI-RS subframe.

The conflict processing module 503 is specifically configured to: remove zero-power CSI-RSs that conflict with time-frequency resource location information of non-zero-power CSI-RSs according to the time-frequency resource location information of real zero-power CSI-RSs. The resource unit of RS; calculate the subframe, time-frequency resource position, and the number of the zero-power CSI-RS that does not conflict with the time-frequency resource position information of the non-zero-power CSI-RS, and save it to the CSI-RS In the RS shared database; and, save the subframe where the real non-zero power CSI-RS is located, the time-frequency resource location, and the existing quantity in the CSI-RS shared database.

Here, after the first judging module 502 judges the CSI-RS subframes that meet the real existence condition, the apparatus further includes: a first sharing and saving module 504, configured to store the CSI-RS subframes that meet the real existence condition The parameter information of the subframe is stored in a preset CSI-RS shared database.

The parameter information of the CSI-RS subframe includes: subframe number, frame number, existing quantity, time-frequency resource location information, and CSI-RS existence flag information of the actual CSI-RS.

Here, the first judgment module 502 is specifically configured to: according to the theoretical value of the CSI-RS time-frequency resource location information, judge whether the CSI-RS collides with any one of PSS, SSS, and broadcast signals ;

If the CSI-RS does not collide with any of PSS, SSS and broadcast signals, according to the LTE standard, it is judged whether the CSI-RS is compatible with a TDD special subframe or an even-numbered frame subframe of SIB1 where TDD and FDD are located. any one of frame 5 collides;

If the CSI-RS does not conflict with any of the TDD special subframes or the even-numbered subframes 5 of SIB1 where TDD and FDD are located, calculate and determine whether the CSI-RS is a The paging subframe under the current configuration, if not, the CSI-RS is a CSI-RS subframe that satisfies the real existence condition.

Wherein, the judging whether the CSI-RS collides with any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located includes:

Compare the theoretical value of the subframe where the CSI-RS is located and the time-frequency resource location information with the subframe and time of the PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located. If the CSI-RS and any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located exist in the same subframe or the same subframe If the corresponding time-frequency resource positions in the frame are the same, the CSI-RS collides with any of PSS, SSS, broadcast signal, TDD special subframe, and even frame subframe 5 of SIB1 where TDD and FDD are located.

Embodiment 6

To implement the above method, an embodiment of the present invention further provides another apparatus for processing CSI-RS. As shown in FIG. 6 , the apparatus includes a second detection module 601 , a second judgment module 602 , an acquisition module 603 , and a second sharing module 601 . Saving module 604, sharing processing module 605; wherein,

The second detection module 601 is configured to detect whether CSI-RS is enabled and whether CSI-RS configuration parameters and paging configuration parameters have changed;

The second judgment module 602 is configured to detect that the CSI-RS is enabled and the configuration parameters of the CSI-RS and the paging configuration parameters change, according to the theoretical value of the CSI-RS time-frequency resource location information, LTE standard, paging configuration parameters, and determine the CSI-RS subframes that meet the real existence conditions;

The obtaining module 603 is configured to obtain the CSI-RS subframes that satisfy the real existence condition;

The second shared saving module 604 is configured to save the parameter information of the CSI-RS subframe that meets the real existence condition in a preset CSI-RS shared database;

The sharing processing module 605 is configured to share and complete channel estimation, PDSCH decoding and feedback calculation of channel quality information according to the parameter information of the CSI-RS subframes actually existing in the CSI-RS sharing database.

Wherein, the shared processing module 605 is specifically used for:

Read the parameter information of the real CSI-RS subframe in the CSI-RS shared database, the parameter information includes: the subframe number, frame number, existing quantity, time-frequency resource location information of the real CSI-RS , and CSI-RS presence flag information;

Determine the number of CSI-RS-related resources and time-frequency resource location parameters for configuring hardware resource units according to the number of existing CSI-RSs and time-frequency resource location information, and complete PDSCH decoding according to the hardware resource units;

According to the subframe number, frame number and time-frequency resource location information of the shared real CSI-RS subframe, the feedback calculation of the channel quality information is completed in the CQI, PMI or RI feedback link.

In practical applications, the first detection module 501, the first judgment module 502, the conflict processing module 503, the first shared storage module 504, the second detection module 601, the second judgment module 602, the acquisition module 603, the second shared The storage module 604 and the shared processing module 605 can both be composed of a central processing unit (CPU, Central Processing Unit), a microprocessor (MPU, Micro Processor Unit), a digital signal processor (DSP, Digital Signal Processor), or a field-available processor located on the user equipment. Programmable gate array (FPGA, Field Programmable Gate Array) and other implementations.

This embodiment of the present invention detects whether CSI-RS is enabled and whether the configuration parameters of CSI-RS change, wherein the CSI-RS includes zero-power CSI-RS and non-zero-power CSI-RS; it is detected that the CSI-RS enables can and when the configuration parameters of the CSI-RS change, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, determine the CSI-RS subframes that meet the real existence conditions; The zero-power CSI-RS and the non-zero-power CSI-RS in the existing CSI-RS subframes are subjected to collision processing. In this way, not only can the real subframes where zero-power CSI-RS and non-zero-power CSI-RS are located, and the location of time-frequency resources be accurately judged, but also the process is optimized, the number of complex calculations is reduced, and complex and repeated calculations are avoided. and the timing problem caused thereby, to achieve the effect of quickly completing the calculation of the time and position of the CSI-RS; at the same time, for the PDSCH decoding and the CSI channel quality information feedback process, the embodiment of the present invention shares the CSI-RS data by The calculation process of multi-module CSI-RS data is reduced or avoided, time overhead is greatly reduced, and processing efficiency is improved.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, optical storage, and the like.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the within the protection scope of the present invention.

Claims (16)

1. A method for processing channel state information reference signal CSI-RS, wherein the method comprises: Detecting whether CSI-RS is enabled and whether the configuration parameters of CSI-RS have changed, wherein the CSI-RS includes zero-power CSI-RS and non-zero-power CSI-RS; When detecting that the CSI-RS is enabled and the configuration parameters of the CSI-RS change, determine the CSI according to the theoretical value of the CSI-RS time-frequency resource location information, the long-term evolution LTE standard, and paging configuration parameters - The RS does not conflict with any of the primary synchronization signal PSS, the secondary synchronization signal SSS, and the broadcast signal, and the CSI-RS and the TDD special subframe or the system information block where the time division duplex TDD and frequency division duplex FDD are located When any of the even-numbered subframes 5 of SIB1 does not collide, and the CSI-RS is not a paging subframe under the current configuration, it is judged that the CSI-RS subframe satisfies the real existence condition; Conflict processing is performed on the zero-power CSI-RS and the non-zero-power CSI-RS in the real CSI-RS subframe. 2. The method according to claim 1, characterized in that, after judging the CSI-RS subframe that satisfies the real existence condition, the method further comprises: assigning the CSI-RS subframe meeting the real existence condition The parameter information of the frame is stored in a preset CSI-RS shared database. 3. The method according to claim 2, wherein the parameter information of the CSI-RS subframe comprises: subframe number, frame number, existing quantity, time-frequency resource location information, and CSI-RS presence flag information. 4. The method according to claim 1 or 2, characterized in that, according to the theoretical value of CSI-RS time-frequency resource location information, LTE standard, and paging configuration parameters, it is determined that the CSI-RS subframe that satisfies the real existence condition ,include: According to the theoretical value of the CSI-RS time-frequency resource location information, determine whether the CSI-RS collides with any one of the primary synchronization signal PSS, the secondary synchronization signal SSS, and the broadcast signal; If the CSI-RS does not conflict with any of PSS, SSS, and broadcast signals, according to the LTE standard, it is determined whether the CSI-RS is compatible with time division duplex TDD special subframes or TDD, frequency division duplex Any one of the even-numbered subframes 5 of the system message block 1SIB1 where the FDD is located collides; If the CSI-RS does not conflict with any of the TDD special subframes or the even-numbered subframes 5 of SIB1 where TDD and FDD are located, calculate and determine whether the CSI-RS is a The paging subframe under the current configuration, if not, the CSI-RS is a CSI-RS subframe that satisfies the real existence condition. 5. The method according to claim 4, wherein the judging whether the CSI-RS is related to any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located. A conflict that includes: Compare the theoretical value of the subframe where the CSI-RS is located and the time-frequency resource location information with the subframe and time of the PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located. If the CSI-RS and any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located exist in the same subframe or the same subframe If the corresponding time-frequency resource positions in the frame are the same, the CSI-RS collides with any of PSS, SSS, broadcast signal, TDD special subframe, and even frame subframe 5 of SIB1 where TDD and FDD are located. 6. The method according to claim 2, wherein the performing conflict processing on the zero-power CSI-RS and the non-zero-power CSI-RS in the real CSI-RS subframes comprises: According to the time-frequency resource position information of the real zero-power CSI-RS, remove the resource elements of the zero-power CSI-RS that conflict with the time-frequency resource position information of the non-zero power CSI-RS; calculate the real existence and non-zero power The subframe where the time-frequency resource position information of the CSI-RS does not conflict with the zero-power CSI-RS, the time-frequency resource position, and the number of existing zero-power CSI-RSs are stored in the CSI-RS shared database; The subframe where the power CSI-RS is located, the time-frequency resource location, and the existing quantity are stored in the CSI-RS shared database. 7. A method for processing CSI-RS, wherein the method comprises: Detect whether the CSI-RS is enabled and whether the configuration parameters of the CSI-RS and the paging configuration parameters have changed; when it is detected that the CSI-RS is enabled and the configuration parameters of the CSI-RS and the paging configuration parameters have changed, According to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, it is determined that the CSI-RS does not conflict with any one of the primary synchronization signal PSS, the secondary synchronization signal SSS, and the broadcast signal, and The CSI-RS does not conflict with any of the TDD special subframes or the even-numbered subframes 5 of the system information block SIB1 where time division duplex TDD and frequency division duplex FDD are located, and the CSI-RS is not currently configured When the next paging subframe is used, determine the CSI-RS subframe that satisfies the real existence condition; Acquire the CSI-RS subframes that meet the real existence conditions, and save the parameter information of the CSI-RS subframes that meet the real existence conditions in a preset CSI-RS shared database; According to the parameter information of the CSI-RS subframes actually existing in the CSI-RS sharing database, the sharing completes the channel estimation, the decoding of the physical downlink shared channel PDSCH, and the feedback calculation of the channel quality information. 8. The method according to claim 7, wherein, according to the parameter information of the CSI-RS subframes actually existing in the CSI-RS sharing database, the sharing completes channel estimation, PDSCH decoding and channel quality information feedback calculation, including: Read the parameter information of the real CSI-RS subframe in the CSI-RS shared database, the parameter information includes: the subframe number, frame number, existing quantity, time-frequency resource location information of the real CSI-RS , and CSI-RS presence flag information; Determine the number of CSI-RS-related resources and time-frequency resource location parameters for configuring hardware resource units according to the number of existing CSI-RSs and time-frequency resource location information, and complete PDSCH decoding according to the hardware resource units; According to the subframe number, frame number, and time-frequency resource location information of the shared real CSI-RS subframe, complete the channel quality information in the channel quality information indication CQI or precoding matrix index PMI or rank indication RI feedback link. Feedback calculation. 9. A CSI-RS processing device, characterized in that the device comprises: a first detection module, a first judgment module, and a conflict processing module; wherein, the first detection module, configured to detect whether the CSI-RS is enabled and whether the configuration parameters of the CSI-RS have changed, wherein the CSI-RS includes a zero-power CSI-RS and a non-zero-power CSI-RS; The first judgment module is configured to detect that the CSI-RS is enabled and the configuration parameters of the CSI-RS change, according to the theoretical value of the CSI-RS time-frequency resource location information, the LTE standard, and the paging configuration parameters, it is judged that the CSI-RS does not conflict with any of the primary synchronization signal PSS, the secondary synchronization signal SSS, and the broadcast signal, and the CSI-RS and TDD special subframes or time division duplex TDD, frequency division dual When any of the even-numbered subframes 5 of the system information block SIB1 where the working FDD is located does not conflict, and the CSI-RS is not a paging subframe under the current configuration, it is determined that the CSI-RS subframe that satisfies the real existence condition frame; The conflict processing module is configured to perform conflict processing on the zero-power CSI-RS and the non-zero-power CSI-RS in the real CSI-RS subframe. 10 . The apparatus according to claim 9 , wherein, after the first judgment module judges the CSI-RS subframes that satisfy the real existence condition, the apparatus further comprises: a first shared storage module, configured to: 10 . The parameter information of the CSI-RS subframe that meets the real existence condition is stored in a preset CSI-RS shared database. 11. The apparatus according to claim 10, wherein the parameter information of the CSI-RS subframe comprises: subframe number, frame number, existing quantity, time-frequency resource location information, and CSI-RS presence flag information. The apparatus according to claim 9 or 10, wherein the first judgment module is specifically configured to: according to the theoretical value of the CSI-RS time-frequency resource location information, judge whether the CSI-RS is not Conflict with any of PSS, SSS, broadcast signal; If the CSI-RS does not collide with any of PSS, SSS and broadcast signals, according to the LTE standard, it is judged whether the CSI-RS is compatible with a TDD special subframe or an even-numbered frame subframe of SIB1 where TDD and FDD are located. any one of frame 5 collides; If the CSI-RS does not conflict with any of the TDD special subframes or the even-numbered subframes 5 of SIB1 where TDD and FDD are located, calculate and determine whether the CSI-RS is a The paging subframe under the current configuration, if not, the CSI-RS is a CSI-RS subframe that satisfies the real existence condition. 13. The apparatus according to claim 12, wherein the judging whether the CSI-RS is related to any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located. A conflict that includes: Compare the theoretical value of the subframe where the CSI-RS is located and the time-frequency resource location information with the subframe and time of the PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located. If the CSI-RS and any of PSS, SSS, broadcast signal, TDD special subframe, and even-numbered frame subframe 5 of SIB1 where TDD and FDD are located exist in the same subframe or the same subframe If the corresponding time-frequency resource positions in the frame are the same, the CSI-RS collides with any of PSS, SSS, broadcast signal, TDD special subframe, and even frame subframe 5 of SIB1 where TDD and FDD are located. 14 . The apparatus according to claim 10 , wherein the conflict processing module is specifically configured to: according to the time-frequency resource location information of the real zero-power CSI-RS, remove the non-zero-power CSI-RS and the non-zero-power CSI-RS. 15 . Resource unit of zero-power CSI-RS whose time-frequency resource location information collides; calculate the subframe and time-frequency resource location where the real zero-power CSI-RS that does not conflict with the time-frequency resource location information of non-zero power CSI-RS is located , and the existing quantity, and save in the CSI-RS shared database; And, save the subframe where the real non-zero power CSI-RS is located, the time-frequency resource position, and the existing quantity in the CSI-RS shared database . 15. A CSI-RS processing device, characterized in that the device comprises: a second detection module, a second judgment module, an acquisition module, a second shared storage module, and a shared processing module; wherein, the second detection module, configured to detect whether the CSI-RS is enabled and whether the configuration parameters of the CSI-RS and the paging configuration parameters have changed; The second judgment module is used to detect that the CSI-RS is enabled and the configuration parameters of the CSI-RS and the paging configuration parameters change, according to the theoretical value of the CSI-RS time-frequency resource location information, LTE standard, paging configuration parameters, it is determined that the CSI-RS does not conflict with any of the primary synchronization signal PSS, the secondary synchronization signal SSS, and the broadcast signal, and the CSI-RS and TDD special subframe or time division duplex When any of the even-numbered subframes 5 of the system information block SIB1 where the TDD and the frequency division duplex FDD are located do not conflict, and the CSI-RS is not a paging subframe under the current configuration, it is determined that the real existence condition is satisfied CSI-RS subframes; The obtaining module is used to obtain the CSI-RS subframes that meet the real existence conditions; the second shared saving module, configured to save the parameter information of the CSI-RS subframes that meet the real existence conditions in a preset CSI-RS shared database; The sharing processing module is configured to share and complete channel estimation, PDSCH decoding and feedback calculation of channel quality information according to the parameter information of the CSI-RS subframes actually existing in the CSI-RS sharing database. 16. The apparatus according to claim 15, wherein the shared processing module is specifically configured to: Read the parameter information of the real CSI-RS subframe in the CSI-RS shared database, the parameter information includes: the subframe number, frame number, existing quantity, time-frequency resource location information of the real CSI-RS , and CSI-RS presence flag information; Determine the number of CSI-RS-related resources and time-frequency resource location parameters for configuring hardware resource units according to the number of existing CSI-RSs and time-frequency resource location information, and complete PDSCH decoding according to the hardware resource units; According to the subframe number, frame number and time-frequency resource location information of the shared real CSI-RS subframe, the feedback calculation of the channel quality information is completed in the CQI, PMI or RI feedback link.

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