CN114362906A - Rate matching method, device, electronic equipment and readable medium - Google Patents
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Abstract
The application provides a rate matching method, a rate matching device, an electronic device and a readable medium. The method comprises the following steps: acquiring an NR signal and an LTE signal, wherein the frequency spectrum of the NR signal and the frequency spectrum of the LTE signal are overlapped, the LTE signal comprises at least two cell reference signals CRS, the NR signal comprises at least two groups of first channel state information reference signals CSI-RS corresponding to symbols where the two CRS are located and second CSI-RS corresponding to symbols where the non-CRS is located; calculating a first signal to interference plus noise ratio (SINR) of at least two groups of first CSI-RSs and a second signal to interference plus noise ratio (SINR) of at least two groups of second CSI-RSs, and calculating difference values of the first SINR and the second SINR respectively to obtain at least two SINR difference values; and determining the symbol position interfered by the LTE signal in the NR signal according to the at least two SINR difference values, and carrying out rate matching on the interfered symbol position. The method can avoid resource waste caused by rate matching of the 5G cell and the 4G cell which are not overlapped, and improve the reduction of the frequency spectrum utilization rate and the communication efficiency.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a rate matching method, an apparatus, an electronic device, and a readable medium.
Background
With the development and the evolution of 5G technology, the 4G spectrum will be replanted to be 5G spectrum in the future, however, in the replanning process, the situation that the 4G spectrum cannot be completely replanted to be 5G due to certain requirements of 4G services in part of areas exists. Therefore, the mutual influence when the 4G network and the 5G network coexist becomes an important issue to be considered.
In the related art, a current solution to the interference of CRS of a 4G cell with 5G is to perform rate matching on resource elements or entire symbols at corresponding positions of CRS signals in a 5G spectrum, and to reduce the influence of the 4G signal on the 5G signal by puncturing the positions of the interference signals.
However, in the above scheme, in a case where the 4G cell and the 5G cell are not provided by the same base station, a part of resources of the 5G cell that does not overlap with the 4G cell may not be used for 5G communication due to rate matching, which results in a decrease in spectrum utilization and a decrease in communication efficiency.
Disclosure of Invention
Based on the above technical problem, the present application provides a rate matching method, an apparatus, an electronic device, and a readable medium, so as to avoid resource waste caused by rate matching of a 5G cell at a portion that is not overlapped with a 4G cell, and improve spectrum utilization reduction and communication efficiency.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to an aspect of the embodiments of the present application, a rate matching method is provided, which is used in a spectrum sharing scenario of a new air interface NR and a long term evolution LTE, and includes:
acquiring an NR signal and an LTE signal, wherein the frequency spectrum of the NR signal and the frequency spectrum of the LTE signal are overlapped, the LTE signal comprises at least two groups of first channel state information reference signals (CSI-RS) corresponding to at least two Cell Reference Signals (CRSs), and the NR signal comprises at least two groups of first CSI-RS corresponding to symbols where the two CRSs are located and second CSI-RS corresponding to symbols where non-CRSs are located;
calculating a first signal to interference plus noise ratio (SINR) of the at least two groups of first CSI-RSs and a second signal to interference plus noise ratio (SINR) of the second CSI-RS, and calculating difference values of the first SINR and the second SINR respectively to obtain at least two SINR difference values;
and determining the symbol position interfered by the LTE signal in the NR signal according to the at least two SINR difference values, and performing rate matching on the interfered symbol position.
In some embodiments of the present application, based on the above technical solution, the determining, according to the at least two SINR differences, a symbol position interfered by the LTE signal in the NR signal, and performing rate matching on the interfered symbol position includes:
comparing the at least two SINR difference values with a preset difference threshold value respectively;
and if any SINR difference value is larger than or equal to the preset difference value threshold, performing rate matching on the symbol where the CRS corresponding to the SINR difference value is located.
In some embodiments of the present application, based on the above technical solutions, the method further includes:
if the at least two SINR difference values are smaller than the preset difference threshold value, acquiring a signal quality index of the NR signal;
and according to the quality index of the quality signal, carrying out bandwidth adjustment on the NR signal.
In some embodiments of the present application, based on the above technical solution, the signal quality indicator is reference signal received power RSRP; the performing bandwidth adjustment on the NR signal according to the quality indicator of the quality signal includes:
comparing the RSRP of the CSI-RSs in the NR signal to a received power threshold;
if the RSRP is smaller than the receiving power threshold, continuing to monitor the NR signal and the LTE signal;
if the RSRP is greater than or equal to the received power threshold, measuring SINR of a Synchronization Signal Block (SSB) of the NR signal;
and according to the SINR of the SSB and the SINR of the CSI-RS in the NR signal, performing bandwidth adjustment on the NR signal.
In some embodiments of the present application, based on the above technical solution, the performing bandwidth adjustment on the NR signal according to the SSB and the CSI-RS of the NR signal includes:
if the difference value between the SINR of the SSB and the SINR of the CSI-RS in the NR signal is larger than a preset signal-to-interference-and-noise ratio threshold, determining the overlapping bandwidth of the NR signal and the bandwidth of the LTE signal;
and performing frequency selective scheduling on the NR signals so that the overlapped bandwidths are not used for carrying out the services of the NR signals.
According to an aspect of the embodiments of the present application, there is provided a rate matching apparatus for use in a spectrum sharing scenario of a new air interface NR and a long term evolution LTE, including:
the signal acquisition module is used for acquiring an NR signal and an LTE signal, wherein the frequency spectrum of the NR signal and the frequency spectrum of the LTE signal are overlapped, the LTE signal comprises at least two groups of first channel state information reference signals (CSI-RS) corresponding to at least two Cell Reference Signals (CRS), and the NR signal comprises at least two groups of first CSI-RS corresponding to symbols where the two CRS are located and second CSI-RS corresponding to symbols where non-CRS are located;
a signal to interference plus noise ratio calculation module, configured to calculate a first signal to interference plus noise ratio SINR of the at least two groups of first CSI-RSs and a second signal to interference plus noise ratio SINR of the second CSI-RS, and calculate differences between the first SINR and the second SINR respectively to obtain at least two SINR differences;
and the rate matching module is used for determining the symbol position interfered by the LTE signal in the NR signal according to the at least two SINR difference values and performing rate matching on the interfered symbol position.
In some embodiments of the present application, based on the above technical solution, the rate matching module includes:
a difference comparison unit, configured to compare the at least two SINR differences with a preset difference threshold respectively;
and the rate matching unit is used for performing rate matching on the symbol where the CRS corresponding to the SINR difference value is located if any SINR difference value is greater than or equal to the preset difference threshold value.
In some embodiments of the present application, based on the above technical solution, the rate matching apparatus further includes:
a quality index obtaining module, configured to obtain a signal quality index of the NR signal if the at least two SINR differences are both smaller than the preset difference threshold;
and the bandwidth adjusting module is used for adjusting the bandwidth of the NR signal according to the quality index of the quality signal.
According to an aspect of an embodiment of the present application, there is provided an electronic apparatus including: a processor; and a memory for storing executable instructions for the processor; wherein the processor is configured to perform the rate matching method as in the above solution via execution of executable instructions.
According to an aspect of the embodiments of the present application, there is provided a computer-readable storage medium having stored thereon a computer program, which when executed by a processor implements a rate matching method as in the above technical solutions.
In the embodiment of the application, the position of the symbol interfered by the LTE signal in the NR signal is determined by the difference value of the signal-to-interference-and-noise ratios of the CSI-RSs in the NR signal, and the interfered symbol position is subjected to rate matching. By the mode, when rate matching is carried out, the actual interference relation between the LTE signal and the NR signal in the cell can be detected, rate matching is carried out on the overlapped part of the signals, and rate matching is not carried out on the NR signal which is not interfered by the LTE signal, so that resource waste caused by rate matching of the 5G cell and the 4G cell in the non-overlapped part can be avoided, and the reduction of the frequency spectrum utilization rate and the communication efficiency are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 schematically illustrates an exemplary system architecture diagram of the present application in one application scenario;
fig. 2 is an exemplary overall flow of a rate matching method in an embodiment of the present application;
fig. 3 is a flow chart illustrating a rate matching method in an embodiment of the present application;
FIG. 4 is a diagram illustrating a signal mapping relationship according to an embodiment of the present application;
FIG. 5 is a diagram illustrating a signal mapping relationship according to an embodiment of the present application;
fig. 6 schematically shows a block diagram of the rate matching apparatus in the embodiment of the present application;
FIG. 7 illustrates a schematic structural diagram of a computer system suitable for use in implementing the electronic device of an embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
It should be understood that the scheme of the present application can be applied to 5G communication, and is particularly applied to a scenario in which a 5G base station and a 4G base station are respectively located at different positions, but coverage areas of cells overlap. In such a scenario, to avoid interference of the 5G signal with the 4G signal, the 5G signal is usually rate-matched. Rate matching refers to the way bits on a transport channel are repeated or punctured to match the physical channel's carrying capacity, the bit rate required by the transport format when the channel is mapped. Puncturing is to punch out the current bit and sequentially advance the following bits by one bit. Puncturing is the removal of bits from a sequence of bits according to a certain pattern. Repetition is the insertion of the current bit once between the current bit and the following bit. The de-rate matching algorithm, in contrast, recovers the dropped bits, or drops the repeated bits. The interfered positions in the 5G signal are punctured through rate matching, so that the positions are not available for 5G services, and the influence of the 4G signal on the 5G signal is reduced. According to the scheme of the application, the interference situation between a New Air (NR) signal of 5G and a Long Term Evolution (LTE) signal of 4G can be judged according to the situation of the reference signal, so that which symbols are interfered are determined, and rate matching is carried out on the symbols.
Fig. 1 schematically shows an exemplary system architecture diagram of the present technical solution in an application scenario. As shown in fig. 1, the application scenario of the present application includes a 5G base station 110 and a 4G base station 120. The cell range of the 5G base station 110 and the cell range of the 4G base station 120 partially overlap, and the NR signal of the 5G base station 110 in the overlapping bandwidth may be interfered by the LTE signal transmitted by the 4G base station 120. The scheme of the present application may be performed by a computer device in the 5G base station 110 in fig. 1, thereby configuring the emitted NR signal to adjust its signal quality.
Please refer to fig. 2 for a scheme flow performed by the base station in rate matching. Fig. 2 is an exemplary overall flow of a rate matching method in the embodiment of the present application. As shown in fig. 2, the specific process is as follows:
first, Channel State Information-Reference signals (CSI-RS) configured by symbols where three sets of Cell Reference Signals (CRS) are located are configured in an LTE Signal, and a set of CSI-RS is configured by symbols where non-CRS is located in an NR Signal. And respectively calculating the Signal to Interference plus Noise Ratio (SINR) difference value of the CSI-RSs configured by the symbols of the three groups of CRSs and the CSI-RSs configured by the symbols of the non-CRSs, and marking the SINR difference value as P. And setting a threshold value Q of an SINR difference value of the CSI-RS, if the SINR difference value P exceeds the threshold value Q, indicating that the CRS is greatly interfered, performing rate matching on CRS symbols corresponding to the CSI-RS, and if the SINR difference value P does not exceed the threshold value Q, entering next judgment. Setting a Reference Signal Receiving Power (RSRP) threshold value M, if the RSRP value of the CSI-RS exceeds M, indicating that the CSI-RS is in a better Signal position, possibly having the condition of good Signal but large interference, entering the next judgment, and if the RSRP value of the CSI-RS does not exceed M, continuing to monitor the CSI-RS. Measuring SINR value of a Synchronization Signal block (Synchronization Signal/PBCH block, SSB), setting a threshold value N of a difference value between SINR of the SSB and SINR of CSI-RS, if the difference value W between SINR of the SSB and SINR of the CSI-RS exceeds the threshold value N, indicating that the whole frequency spectrum corresponding to LTE bandwidth is greatly interfered, if NR has bandwidth which is not overlapped with the LTE, adopting a frequency selection scheduling strategy, scheduling non-overlapped bandwidth, avoiding NR service of the overlapped bandwidth, and avoiding rate reduction caused by MCS reduction. If the interference does not exceed the threshold value, the interference situation is not serious, and the CSI-RS monitoring is continued.
The technical solutions provided in the present application are described in detail below with reference to specific embodiments.
Referring to fig. 3, fig. 3 shows a flowchart of a rate matching method in this embodiment, where the method of this embodiment may be applied to a 5G base station as described above, and is specifically applied to a spectrum sharing scenario for a new air interface NR and long term evolution LTE, and is executed by a computer device in the base station. The method of the present embodiment may include the following steps S310 to S330:
step S310, an NR signal and an LTE signal are obtained, wherein the frequency spectrum of the NR signal and the frequency spectrum of the LTE signal are overlapped, the LTE signal comprises at least two cell reference signals CRS, and the NR signal comprises at least two groups of first channel state information reference signals CSI-RS corresponding to symbols where the two CRS are located and second CSI-RS corresponding to symbols where the non-CRS is located.
Specifically, at least two sets of CSI-RS signals are set in the NR signal, the CSI-RS signals are located at the same symbol positions as the CRS signals in the LTE signal, and the frequency domain width is the spectrum width of the NR and LTE overlapped. In addition, a group of full-bandwidth CSI-RS at the symbol position corresponding to the symbol where the non-CRS is located is configured at the NR. Note that because of the existence of LTE PUCCH, the symbol position configured in NR cannot be two symbols before, and the other symbols 4, 7, 8, and 11 can be configured selectively. Referring to fig. 4, fig. 4 is a schematic diagram of a signal corresponding relationship in the embodiment of the present application. In an LTE signal, CRS positions are usually configured modulo-3 according to cell IDs, and at the side of a 5G base station, it is not clear which LTE neighboring cells have large interference on an NR signal, so to know interference of CRSs, three sets of CSI-RSs need to be configured at the side of the NR signal, where each set corresponds to one CRS, as shown in fig. 5, and fig. 5 is a schematic diagram of a signal correspondence relationship in this embodiment.
Step S320, calculating a first signal to interference plus noise ratio SINR of the at least two groups of first CSI-RS and a second signal to interference plus noise ratio SINR of the second CSI-RS, and calculating a difference between the first SINR and the second SINR respectively to obtain at least two SINR differences.
Specifically, according to the measurement result of the CSI-RS, the corresponding signal to interference plus noise ratio SINR can be calculated. The SINR values of the three groups of CSI-RSs configured on the symbols where CRS is located and the group of CSI-RSs configured on the symbols where non-CRS is located are compared. The CSI-RS of the symbol where the non-CRS is located is less interfered by the CRS signal, so that the CSI-RS can be used as a comparison label. The SINR difference may then reflect the quality gap between the interfered signal and the normal signal.
Step S330, determining the symbol position interfered by the LTE signal in the NR signal according to the at least two SINR difference values, and performing rate matching on the interfered symbol position.
In an embodiment of the present application, the determining, according to the at least two SINR differences, a symbol position interfered by the LTE signal in the NR signal, and performing rate matching on the interfered symbol position may include the following steps: comparing the at least two SINR difference values with a preset difference threshold value respectively; and if any SINR difference value is larger than or equal to the preset difference value threshold, performing rate matching on the symbol where the CRS corresponding to the SINR difference value is located. The preset difference threshold is set to be related to the interference discrimination sensitivity, if the threshold is small, the rate matching is triggered by the smaller interference, and if the threshold is large, the opposite is true.
In one embodiment of the present application, the method further comprises the steps of: if the at least two SINR difference values are smaller than the preset difference threshold value, acquiring a signal quality index of the NR signal; and according to the quality index of the quality signal, carrying out bandwidth adjustment on the NR signal. Specifically, the signal quality indicator may be an RSRP, RSSI, RSRQ, or the like. The condition of the signal can be determined according to the signal quality index, and the condition that the signal is good but the interference is large can be judged according to the signal quality index, so that the corresponding bandwidth adjustment is carried out to reduce the interference.
In one embodiment of the present application, the signal quality indicator is reference signal received power, RSRP; the bandwidth adjustment of the NR signal according to the quality indicator may include the following steps: comparing the RSRP of the CSI-RSs in the NR signal to a received power threshold; if the RSRP is smaller than the receiving power threshold, continuing to monitor the NR signal and the LTE signal; if the RSRP is greater than or equal to the receiving power threshold, continuing to monitor the NR signal and the LTE signal, and measuring the SINR of a synchronous signal block SSB of the NR signal; and according to the SINR of the SSB and the SINR of the CSI-RS in the NR signal, performing bandwidth adjustment on the NR signal. Specifically, in the embodiment of the present application, the SSB signal is set in a spectrum position where LTE does not overlap in the NR signal. For example, for the case of a 40M NR signal and a 20M LTE signal, the SSB is set in a 20M bandwidth that does not overlap with LTE, thereby avoiding LTE interference. In another case, if the SSB signal is set in a 20M bandwidth overlapping with LTE, the LTE signal may be rate-matched first, so that the LTE neighboring cell in the overlapping bandwidth performs rate-matched puncturing at the position of the SSB signal, so that the SSB of the NR signal is not affected by the LTE signal. In an embodiment of the present application, the performing bandwidth adjustment on the NR signal according to the SSB and the CSI-RS of the NR signal includes: if the difference value between the SINR of the SSB and the SINR of the CSI-RS in the NR signal is larger than a preset signal-to-interference-and-noise ratio threshold, determining the overlapping bandwidth of the NR signal and the bandwidth of the LTE signal; and performing frequency selective scheduling on the NR signals so that the overlapped bandwidths are not used for carrying out the services of the NR signals.
In the embodiment of the application, the position of the symbol interfered by the LTE signal in the NR signal is determined by the difference value of the signal-to-interference-and-noise ratios of the CSI-RSs in the NR signal, and the interfered symbol position is subjected to rate matching. By the mode, when rate matching is carried out, the actual interference relation between the LTE signal and the NR signal in the cell can be detected, rate matching is carried out on the overlapped part of the signals, and rate matching is not carried out on the NR signal which is not interfered by the LTE signal, so that resource waste caused by rate matching of the 5G cell and the 4G cell in the non-overlapped part can be avoided, and the reduction of the frequency spectrum utilization rate and the communication efficiency are improved.
It should be noted that although the various steps of the methods in this application are depicted in the drawings in a particular order, this does not require or imply that these steps must be performed in this particular order, or that all of the shown steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
The following describes an implementation of the apparatus of the present application, which can be used to perform the rate matching method in the above embodiments of the present application. Fig. 6 schematically shows a block diagram of a rate matching apparatus in an embodiment of the present application, which is used in a spectrum sharing scenario of a new air interface NR and a long term evolution LTE. As shown in fig. 6, the rate matching apparatus 600 may mainly include:
a signal obtaining module 610, configured to obtain an NR signal and an LTE signal, where a spectrum of the NR signal and a spectrum of the LTE signal overlap each other, the LTE signal includes at least two sets of first channel state information reference signals CSI-RS corresponding to symbols where the two CRSs are located, and the NR signal includes at least two sets of first CSI-RS corresponding to symbols where the non-CRSs are located;
a signal to interference plus noise ratio calculation module 620, configured to calculate a first signal to interference plus noise ratio SINR of the at least two sets of first CSI-RS and a second signal to interference plus noise ratio SINR of the second CSI-RS, and calculate a difference between the first SINR and the second SINR respectively to obtain at least two SINR differences;
a rate matching module 630, configured to determine, according to the at least two SINR differences, a symbol position of the NR signal interfered by the LTE signal, and perform rate matching on the interfered symbol position.
In some embodiments of the present application, based on the above technical solution, the rate matching module includes:
a difference comparison unit, configured to compare the at least two SINR differences with a preset difference threshold respectively;
and the rate matching unit is used for performing rate matching on the symbol where the CRS corresponding to the SINR difference value is located if any SINR difference value is greater than or equal to the preset difference threshold value.
In some embodiments of the present application, based on the above technical solution, the rate matching apparatus further includes:
a quality index obtaining module, configured to obtain a signal quality index of the NR signal if the at least two SINR differences are both smaller than the preset difference threshold;
and the bandwidth adjusting module is used for adjusting the bandwidth of the NR signal according to the quality index of the quality signal.
In some embodiments of the present application, based on the above technical solution, the signal quality indicator is reference signal received power RSRP; the bandwidth adjustment module comprises:
a received power comparison unit for comparing the RSRP of the CSI-RS in the NR signal with a received power threshold;
a signal monitoring unit, configured to continue to monitor the NR signal and the LTE signal if the RSRP is smaller than the received power threshold;
a signal-to-noise ratio measuring unit, configured to measure an SINR of a synchronization signal block SSB of the NR signal if the RSRP is greater than or equal to the received power threshold;
and the bandwidth adjusting unit is used for adjusting the bandwidth of the NR signal according to the SINR of the SSB and the SINR of the CSI-RS in the NR signal.
In some embodiments of the present application, based on the above technical solutions, the bandwidth adjusting unit includes:
an overlap bandwidth determining subunit, configured to determine an overlap bandwidth of the NR signal and the bandwidth of the LTE signal if a difference between the SINR of the SSB and the SINR of the CSI-RS in the NR signal is greater than a preset signal-to-interference-plus-noise ratio threshold;
and the frequency selection scheduling subunit is used for performing frequency selection scheduling on the NR signals so that the overlapped bandwidth is not used for performing the service of the NR signals.
It should be noted that the apparatus provided in the foregoing embodiment and the method provided in the foregoing embodiment belong to the same concept, and the specific manner in which each module performs operations has been described in detail in the method embodiment, and is not described again here.
FIG. 7 illustrates a schematic structural diagram of a computer system suitable for use in implementing the electronic device of an embodiment of the present application.
It should be noted that the computer system 700 of the electronic device shown in fig. 7 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.
As shown in fig. 7, the computer system 700 includes a Central Processing Unit (CPU)701, which can perform various appropriate actions and processes according to a program stored in a Read-Only Memory (ROM) 702 or a program loaded from a storage section 708 into a Random Access Memory (RAM) 703. In the RAM 703, various programs and data necessary for system operation are also stored. The CPU 701, the ROM 702, and the RAM 703 are connected to each other via a bus 704. An Input/Output (I/O) interface 705 is also connected to the bus 704.
The following components are connected to the I/O interface 705: an input portion 706 including a keyboard, a mouse, and the like; an output section 707 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and a speaker; a storage section 708 including a hard disk and the like; and a communication section 709 including a Network interface card such as a LAN (Local Area Network) card, a modem, or the like. The communication section 709 performs communication processing via a network such as the internet. A drive 710 is also connected to the I/O interface 705 as needed. A removable medium 711, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like, is mounted on the drive 710 as necessary, so that a computer program read out therefrom is mounted into the storage section 708 as necessary.
In particular, according to embodiments of the present application, the processes described in the various method flowcharts may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program can be downloaded and installed from a network through the communication section 709, and/or installed from the removable medium 711. The computer program executes various functions defined in the system of the present application when executed by a Central Processing Unit (CPU) 701.
It should be noted that the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), a flash Memory, an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A rate matching method is used in a new air interface NR and LTE spectrum sharing scene, and comprises the following steps:
acquiring an NR signal and an LTE signal, wherein the frequency spectrum of the NR signal and the frequency spectrum of the LTE signal are overlapped, the LTE signal comprises at least two groups of first channel state information reference signals (CSI-RS) corresponding to at least two Cell Reference Signals (CRSs), and the NR signal comprises at least two groups of first CSI-RS corresponding to symbols where the two CRSs are located and second CSI-RS corresponding to symbols where non-CRSs are located;
calculating a first signal to interference plus noise ratio (SINR) of the at least two groups of first CSI-RSs and a second signal to interference plus noise ratio (SINR) of the second CSI-RS, and calculating difference values of the first SINR and the second SINR respectively to obtain at least two SINR difference values;
and determining the symbol position interfered by the LTE signal in the NR signal according to the at least two SINR difference values, and performing rate matching on the interfered symbol position.
2. The method of claim 1, wherein the determining the symbol position interfered by the LTE signal in the NR signal according to the at least two SINR difference values and performing rate matching on the interfered symbol position comprises:
comparing the at least two SINR difference values with a preset difference threshold value respectively;
and if any SINR difference value is larger than or equal to the preset difference value threshold, performing rate matching on the symbol where the CRS corresponding to the SINR difference value is located.
3. The method of claim 2, further comprising:
if the at least two SINR difference values are smaller than the preset difference threshold value, acquiring a signal quality index of the NR signal;
and according to the quality index of the quality signal, carrying out bandwidth adjustment on the NR signal.
4. The method of claim 3, wherein the signal quality indicator is Reference Signal Received Power (RSRP); the performing bandwidth adjustment on the NR signal according to the quality indicator of the quality signal includes:
comparing the RSRP of the CSI-RSs in the NR signal to a received power threshold;
if the RSRP is smaller than the receiving power threshold, continuing to monitor the NR signal and the LTE signal;
if the RSRP is greater than or equal to the received power threshold, measuring SINR of a Synchronization Signal Block (SSB) of the NR signal;
and according to the SINR of the SSB and the SINR of the CSI-RS in the NR signal, performing bandwidth adjustment on the NR signal.
5. The method of claim 4, wherein the bandwidth adjusting the NR signal according to the SSB and the CSI-RS of the NR signal comprises:
if the difference value between the SINR of the SSB and the SINR of the CSI-RS in the NR signal is larger than a preset signal-to-interference-and-noise ratio threshold, determining the overlapping bandwidth of the NR signal and the bandwidth of the LTE signal;
and performing frequency selective scheduling on the NR signals so that the overlapped bandwidths are not used for carrying out the services of the NR signals.
6. A rate matching device is used in a new air interface (NR) and Long Term Evolution (LTE) spectrum sharing scene, and comprises:
the signal acquisition module is used for acquiring an NR signal and an LTE signal, wherein the frequency spectrum of the NR signal and the frequency spectrum of the LTE signal are overlapped, the LTE signal comprises at least two groups of first channel state information reference signals (CSI-RS) corresponding to at least two Cell Reference Signals (CRS), and the NR signal comprises at least two groups of first CSI-RS corresponding to symbols where the two CRS are located and second CSI-RS corresponding to symbols where non-CRS are located;
a signal to interference plus noise ratio calculation module, configured to calculate a first signal to interference plus noise ratio SINR of the at least two groups of first CSI-RSs and a second signal to interference plus noise ratio SINR of the second CSI-RS, and calculate differences between the first SINR and the second SINR respectively to obtain at least two SINR differences;
and the rate matching module is used for determining the symbol position interfered by the LTE signal in the NR signal according to the at least two SINR difference values and performing rate matching on the interfered symbol position.
7. The apparatus of claim 6, wherein the rate matching module comprises:
a difference comparison unit, configured to compare the at least two SINR differences with a preset difference threshold respectively;
and the rate matching unit is used for performing rate matching on the symbol where the CRS corresponding to the SINR difference value is located if any SINR difference value is greater than or equal to the preset difference threshold value.
8. The apparatus of claim 7, wherein the rate matching means further comprises:
a quality index obtaining module, configured to obtain a signal quality index of the NR signal if the at least two SINR differences are both smaller than the preset difference threshold;
and the bandwidth adjusting module is used for adjusting the bandwidth of the NR signal according to the quality index of the quality signal.
9. An electronic device, comprising:
a processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the rate matching method of any of claims 1 to 5 via execution of the executable instructions.
10. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the rate matching method according to any one of claims 1 to 5.
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