CN116346286A - CSI-RS RE rate matching method and device for improving downlink throughput rate of cell, processor and storage medium thereof - Google Patents

CSI-RS RE rate matching method and device for improving downlink throughput rate of cell, processor and storage medium thereof Download PDF

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Publication number
CN116346286A
CN116346286A CN202310327110.8A CN202310327110A CN116346286A CN 116346286 A CN116346286 A CN 116346286A CN 202310327110 A CN202310327110 A CN 202310327110A CN 116346286 A CN116346286 A CN 116346286A
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csi
pdsch
rate matching
cell
improving
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王艳芳
逯利军
钱培专
许闱帷
季利军
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Beijing Certusnet Information Technology Co ltd
Shanghai Certusnet Inc
CERTUSNET CORP
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Beijing Certusnet Information Technology Co ltd
Shanghai Certusnet Inc
CERTUSNET CORP
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/0013—Rate matching, e.g. puncturing or repetition of code symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention relates to a CSI-RS RE rate matching processing method for improving the downlink throughput rate of a cell, which comprises the following steps: configuring parameters of a 5G NR TDD system base station; establishing an NZP CSI-RS resource allocation scheme; establishing a resource allocation scheme of the CSI-IM; establishing a resource allocation scheme of the ZP CSI-RS; and calculating the number of overlapped REs, the number of effective PDSCH REs and PDSCH coding efficiency, and reducing the MCS value or increasing the number of RBs required by PDSCH scheduling. The invention also relates to a CSI-RS RE rate matching device, a processor and a storage medium for improving the downlink throughput rate of the cell. The CSI-RS RE rate matching processing method, the device, the processor and the computer readable storage medium thereof for improving the downlink throughput rate of the cell are adopted, the downlink peak rate and the downlink throughput rate of the cell of the base station system are obviously improved, and the PDSCH rate matching algorithm is adopted for carrying out the PDSCH rate matching algorithm on the CSI-RS RE resources, so that the allocation of the CSI-RS resources and the maximization of the PDSCH service rate are considered, the cell throughput rate and the peak rate of the base station system can be effectively improved, and the performance index of the base station for meeting commercial requirements is improved.

Description

CSI-RS RE rate matching method and device for improving downlink throughput rate of cell, processor and storage medium thereof
Technical Field
The invention relates to the technical field of wireless communication networks, in particular to the field of CSI-RS, and specifically relates to a CSI-RS RE rate matching processing method, device, processor and computer readable storage medium for improving the downlink throughput rate of a cell.
Background
CSI-RS is a downlink reference signal for UE to measure channel state information, and is very important for improving spectrum efficiency of a wireless communication system. The UE feeds back Channel State Information (CSI) to the 5G NR base station by measuring the CSI-RS signal, and the base station can schedule MCS and RB resource allocation according to the channel quality, can perform beam forming, can improve the speed, and can perform multi-user multiplexing and the like. The 5G NR base station can also configure CSI-RS signals for mobility management measurements, e.g., handover. The CSI-RS is a downlink reference signal, and occupies a symbol of a downlink SLOT, and some CSI-RS require that the density of the allocated time-frequency domain is relatively high, for example, TRS for time-frequency domain tracking, a 3gpp protocol is well defined, each UE may configure 1 or more sets, each Set includes two continuous SLOTs, 4 resources in total, and 2 resources of each SLOT. Therefore, when the time-frequency domain density of the CSI-RS is relatively high and the symbol configuration is not continuous in SLOT, the current algorithm is that the CSI-RS monopolizes the symbol resource, so that the PDSCH service scheduling of the UE is greatly affected, and especially, the downlink peak rate and the throughput rate are reduced. Therefore, the influence of the resource allocation of the CSI-RS on the downlink service throughput rate of the cell is reduced as much as possible, and the method is one of important indexes for measuring the processing performance of the 5G NR base station and is one of the difficult problems which the base station system must solve.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a CSI-RS RE rate matching processing method, a device, a processor and a computer readable storage medium thereof for improving the downlink throughput rate of a cell, wherein the CSI-RS RE rate matching processing method, the device, the processor and the computer readable storage medium meet the requirements of high peak rate, high throughput rate and good processing performance.
In order to achieve the above object, the CSI-RS RE rate matching processing method, apparatus, processor and computer readable storage medium for improving downlink throughput of a cell according to the present invention are as follows:
the CSI-RS RE rate matching processing method for improving the downlink throughput rate of the cell is mainly characterized by comprising the following steps of:
(1) Configuring BWP parameters, CSI-RS parameters and CSI parameters shared by multiple UE of a 5G NR TDD system base station;
(2) Establishing an NZP CSI-RS resource allocation scheme;
(3) Establishing a resource allocation scheme of the CSI-IM;
(4) Establishing a resource allocation scheme of the ZP CSI-RS;
(5) And calculating the number of overlapped REs, the number of effective PDSCH REs and PDSCH coding efficiency, reducing the MCS value or increasing the number of RBs required by PDSCH scheduling, and completing PDSCH resource scheduling by rate matching.
Preferably, the step (1) specifically includes the following steps:
(1.1) configuring an uplink dedicated BWP parameter and a downlink dedicated BWP parameter of a full bandwidth;
(1.2) configuring the number of target UEs supportable by the uplink dedicated BWP;
(1.3) defining the application of the CSI-RS through parameter configuration, and configuring corresponding CSI-RS resources according to requirements;
(1.4) configuring PUCCH resources reported by the periodic CSI.
Preferably, the step (2) specifically includes the following steps:
(2.1) allocating resources of a time-frequency domain tracking reference signal TRS;
(2.2) allocating resources of the NZP CSI-RS for CSI feedback;
(2.3) allocating resources of the NZP CSI-RS for mobility management.
Preferably, the step (4) specifically includes the following steps:
(4.1) establishing a resource allocation structure of the ZP CSI-RS;
(4.2) establishing time domain characteristics of the ZP CSI-RS configuration;
(4.3) establishing a number of resource configurations of the ZP CSI-RS;
(4.4) establishing the resource configuration parameters of the ZP CSI-RS.
Preferably, the step (5) specifically includes the following steps:
(5.1) acquiring a PDSCH resource scheduling result of the current scheduling SLOT, and calculating TBSIZE;
(5.2) judging whether the current scheduling SLOT contains a ZP CSI-RS rate matching instruction, if so, continuing to the step (5.3); otherwise, continuing the step (5.12), and ending the PDSCH resource scheduling step;
(5.3) judging whether the RE allocated by PDSCH resource is overlapped with the RE allocated by ZP CSI-RS, if so, continuing the step (5.4); otherwise, continuing the step (5.12), and ending the PDSCH resource scheduling step;
(5.4) calculating the number of REs, which are allocated by PDSCH resources and are overlapped with the REs allocated by ZP CSI-RS;
(5.5) calculating the effective RE quantity of PDSCH resource allocation;
(5.6) calculating coding efficiency of PDSCH using effective RE resources;
(5.7) judging the coding efficiency, if the coding efficiency is smaller than 0.95, continuing the step (5.12), and ending the PDSCH resource scheduling step; otherwise, continuing to step (5.8);
(5.8) obtaining a list of MCS values of the current MCS order of the PDSCH, selecting an MCS value smaller than the current MCS, and recalculating PDSCH coding efficiency by using the lowered MCS value until the coding efficiency of a PDSCH channel is smaller than 0.95;
(5.9) judging whether the rate matching is successful, if so, continuing the step (5.12), and ending the PDSCH resource scheduling step; otherwise, continuing to step (5.10), and increasing the RB number required by PDSCH scheduling;
(5.10) increasing the number of RBs required by PDSCH scheduling, and reallocating RB resources for the PDSCH to perform rate matching;
(5.11) judging whether the rate matching is successful, if so, continuing the step (5.12); otherwise, the PDSCH resource scheduling fails and returns;
(5.12) the PDSCH resource scheduling is successful and returns, and the PDSCH resource scheduling step is ended.
The device for carrying out CSI-RS RE rate matching processing for improving the downlink throughput rate of a cell is mainly characterized by comprising the following components:
a processor configured to execute computer-executable instructions;
and the memory stores one or more computer executable instructions which, when executed by the processor, implement the steps of the CSI-RS RE rate matching processing method for improving the downlink throughput rate of the cell.
The processor for carrying out the CSI-RS RE rate matching processing for improving the downlink throughput rate of the cell is mainly characterized in that the processor is configured to execute computer executable instructions, and when the computer executable instructions are executed by the processor, the steps of the CSI-RS RE rate matching processing method for improving the downlink throughput rate of the cell are realized.
The computer readable storage medium is mainly characterized in that the computer program is stored thereon, and the computer program can be executed by a processor to implement the steps of the CSI-RS RE rate matching processing method for improving the downlink throughput rate of a cell.
The invention adopts the CSI-RS RE rate matching processing method, the device, the processor and the computer readable storage medium thereof for improving the downlink throughput rate of the cell, and obviously improves the downlink peak rate and the throughput rate of the cell of the base station system.
Drawings
Fig. 1 is a flowchart of a CSI-RS RE rate matching processing method for improving a downlink throughput of a cell according to the present invention.
Fig. 2 is a flowchart of a parameter configuration step of a CSI-RS RE rate matching processing method for improving a downlink throughput of a cell according to the present invention.
Fig. 3 is a flowchart of a resource allocation scheme step of establishing an NZP CSI-RS for the CSI-RS RE rate matching processing method for improving a downlink throughput of a cell according to the present invention.
Fig. 4 is a flowchart of a step of establishing a resource allocation scheme of the ZP CSI-RS for the CSI-RS RE rate matching processing method for improving the downlink throughput of a cell according to the present invention.
Fig. 5 is a flowchart of performing PDSCH rate matching on ZP CSI-RS configured REs for the CSI-RS RE rate matching processing method for improving downlink throughput of a cell according to the present invention.
Detailed Description
In order to more clearly describe the technical contents of the present invention, a further description will be made below in connection with specific embodiments.
The CSI-RS RE rate matching processing method for improving the downlink throughput rate of the cell comprises the following steps:
(1) Configuring BWP parameters, CSI-RS parameters and CSI parameters shared by multiple UE of a 5G NR TDD system base station;
(2) Establishing an NZP CSI-RS resource allocation scheme;
(3) Establishing a resource allocation scheme of the CSI-IM;
(4) Establishing a resource allocation scheme of the ZP CSI-RS;
(5) And calculating the number of overlapped REs, the number of effective PDSCH REs and PDSCH coding efficiency, reducing the MCS value or increasing the number of RBs required by PDSCH scheduling, and completing PDSCH resource scheduling by rate matching.
As a preferred embodiment of the present invention, the step (1) specifically includes the steps of:
(1.1) configuring an uplink dedicated BWP parameter and a downlink dedicated BWP parameter of a full bandwidth;
(1.2) configuring the number of target UEs supportable by the uplink dedicated BWP;
(1.3) defining the application of the CSI-RS through parameter configuration, and configuring corresponding CSI-RS resources according to requirements;
(1.4) configuring PUCCH resources reported by the periodic CSI.
As a preferred embodiment of the present invention, the step (2) specifically includes the following steps:
(2.1) allocating resources of a time-frequency domain tracking reference signal TRS;
(2.2) allocating resources of the NZP CSI-RS for CSI feedback;
(2.3) allocating resources of the NZP CSI-RS for mobility management.
As a preferred embodiment of the present invention, the step (4) specifically includes the following steps:
(4.1) establishing a resource allocation structure of the ZP CSI-RS;
(4.2) establishing time domain characteristics of the ZP CSI-RS configuration;
(4.3) establishing a number of resource configurations of the ZP CSI-RS;
(4.4) establishing the resource configuration parameters of the ZP CSI-RS.
As a preferred embodiment of the present invention, the step (5) specifically includes the steps of:
(5.1) acquiring a PDSCH resource scheduling result of the current scheduling SLOT, and calculating TBSIZE;
(5.2) judging whether the current scheduling SLOT contains a ZP CSI-RS rate matching instruction, if so, continuing to the step (5.3); otherwise, continuing the step (5.12), and ending the PDSCH resource scheduling step;
(5.3) judging whether the RE allocated by PDSCH resource is overlapped with the RE allocated by ZP CSI-RS, if so, continuing the step (5.4); otherwise, continuing the step (5.12), and ending the PDSCH resource scheduling step;
(5.4) calculating the number of REs, which are allocated by PDSCH resources and are overlapped with the REs allocated by ZP CSI-RS;
(5.5) calculating the effective RE quantity of PDSCH resource allocation;
(5.6) calculating coding efficiency of PDSCH using effective RE resources;
(5.7) judging the coding efficiency, if the coding efficiency is smaller than 0.95, continuing the step (5.12), and ending the PDSCH resource scheduling step; otherwise, continuing to step (5.8);
(5.8) obtaining a list of MCS values of the current MCS order of the PDSCH, selecting an MCS value smaller than the current MCS, and recalculating PDSCH coding efficiency by using the lowered MCS value until the coding efficiency of a PDSCH channel is smaller than 0.95;
(5.9) judging whether the rate matching is successful, if so, continuing the step (5.12), and ending the PDSCH resource scheduling step; otherwise, continuing to step (5.10), and increasing the RB number required by PDSCH scheduling;
(5.10) increasing the number of RBs required by PDSCH scheduling, and reallocating RB resources for the PDSCH to perform rate matching;
(5.11) judging whether the rate matching is successful, if so, continuing the step (5.12); otherwise, the PDSCH resource scheduling fails and returns;
(5.12) the PDSCH resource scheduling is successful and returns, and the PDSCH resource scheduling step is ended.
The device for carrying out CSI-RS RE rate matching processing for improving the downlink throughput rate of a cell comprises:
a processor configured to execute computer-executable instructions;
and the memory stores one or more computer executable instructions which, when executed by the processor, implement the steps of the CSI-RS RE rate matching processing method for improving the downlink throughput rate of the cell.
The processor for performing the CSI-RS RE rate matching processing for improving the downlink throughput rate of the cell of the present invention is configured to execute computer executable instructions, where the computer executable instructions, when executed by the processor, implement the steps of the CSI-RS RE rate matching processing method for improving the downlink throughput rate of the cell.
The computer readable storage medium of the present invention has a computer program stored thereon, the computer program being executable by a processor to implement the steps of the CSI-RS RE rate matching processing method for improving a downlink throughput of a cell as described above.
In a specific embodiment of the invention, a resource allocation method for improving the downlink throughput rate of a cell by performing PDSCH rate matching on CSI-RS REs is provided, so that the problems of reduced peak rate and throughput rate of the cell caused by the monopolizing of downlink symbols of the CSI-RS and reduced service rate of PDSCH load are effectively solved, the improvement of the downlink throughput rate and the peak rate performance index of the cell is facilitated, and the processing performance of a base station system is effectively improved.
The invention discloses a method for improving the downlink throughput rate of a cell by carrying out PDSCH service rate matching through occupying RE by CSI-RS resources, which mainly focuses on a resource allocation method of the CSI-RS and a PDSCH rate matching algorithm, and comprises the following steps:
(10) Parameter configuration: configuring BWP parameters and CSI-RS and CSI parameters shared by multiple UE of a 5G NR TDD system base station;
(20) Establishing an NZP CSI-RS resource allocation scheme;
(30) Establishing a resource allocation scheme of the CSI-IM;
(40) Establishing a resource allocation scheme of the ZP CSI-RS;
(50) And performing the algorithm design and implementation of PDSCH rate matching on the REs configured by the ZP CSI-RS.
As shown in fig. 1, the resource allocation method for PDSCH rate matching of CSI-RS RE resources adopted in the present invention includes the following steps:
(10) Parameter configuration: the BWP parameters, the CSI-RS and the CSI parameters shared by multiple UEs of the 5G NR TDD system base station are configured, wherein the BWP parameters comprise the parameter configuration of the uplink and downlink special BWP of the UE, the number configuration of target UEs supportable by the base station, the CSI-RS resource use configuration of the UE, the period of CSI reporting and the like.
As shown in fig. 2, the (10) parameter configuration step includes:
(11) BWP parameter configuration: CSI-RS and CSI are BWP-level configurations. The base station of the present patent configures only one full bandwidth uplink dedicated BWP and one full bandwidth downlink dedicated BWP.
(12) Maximum UE number configuration: the present patent configures the number of target UEs supportable by the uplink dedicated BWP, which is one of the basis of PUCCH resource allocation of the UE carrying periodic CSI of the BWP;
(13) CSI-RS resource usage configuration for UE: and defining the application of the CSI-RS through parameter configuration, so as to configure corresponding CSI-RS resources according to requirements. For example, 0 is the off CSI-RS,1 is the on periodic CSI-RS, and is used to measure CQI, reported using periodic CSI; 2 is to turn on the periodic CSI-RS and to measure CQI, use periodic CSI and aperiodic CSI reporting, etc. The TRS is configured by default for time-frequency tracking of the downlink channel by the UE.
(14) Configuring PUCCH resources reported by periodic CSI: and the UE reports the CSI-RS measurement results, and the periodical and non-periodical modes are adopted, so that the periodically reported CSI needs to be configured with PUCCH resources, and the PUCCH resources of multiple UEs are allocated.
(20) Establishing an NZP CSI-RS resource allocation scheme: CSI-RS can be classified into three categories according to use: NZP CSI-RS, ZP CSI-RS and CSI-IM. The NZP CSI-RS designed by the base station is mainly used for time-frequency domain tracking, CSI feedback and mobility management.
As shown in fig. 3, the step of (20) establishing the NZP CSI-RS resource allocation scheme includes:
(201) Resource allocation of the time-frequency domain tracking reference signal TRS: the TRS is NZP CSI-RS used by the UE for accurate time-frequency synchronization, the base station of the patent is FR1 frequency band, and the TRS can be 1 or more TRS CSI-reourceSet according to protocol definition. The TRS Resource allocation scheme of the 5G NR base station comprises a CSI-ReourceNet, 4 periods NZP-CSI-RS-Resource, the density is 3, the number of ports is 1, the period is 80ms, the bandwidth is full bandwidth, the time SLOT offset is 31 and 32, each SLOT is allocated with 2 periods TRS, and symbols 4 and 8 are occupied. The TRS is an NZP CSI-RS that must be configured by default, and no measurement reporting needs to be configured.
(202) Resource allocation for NZP CSI-RS for CSI feedback: 1 CSI-Reourceset is selected, the CSI-Reourceset comprises NZP-CSI-RS-Resource of 2 periods, the density is 1, the number of ports can be configured to be 2 or 4, the period is 80ms, the bandwidth is full bandwidth, 1 period CSI-RS is allocated to each SLOT with the SLOT offset of 6 and 16, and the symbol 13 is occupied.
(203) Resource allocation for NZP CSI-RS for mobility management: the csi-rs-ResourceConfigMobility is used for reference signal configuration of MeasObjectNR for mobility management as defined by the 38331 protocol. The 5G NR base station of the patent allocates the resources of NZP CSI-RS of 1 period in each cell, is used for mobility management, has the density of 3, the number of ports of 1, the period of 40ms, the bandwidth of full bandwidth, the time SLOT offset of 31, allocates 2 periods TRS for each SLOT, and occupies a symbol of 13.
(30) Establishing a resource allocation scheme of the CSI-IM: CSI-IM is used by UE to measure noise, base station
No signal is sent. The base station BWP of the present patent selects 1 CSI-IM-Resource, including 2 periodic CSI-IM-Resource, the frequency domain Resource map is configured as pattern1, the value of subsuccearrier location-p1 is s8, the period is 80ms, the bandwidth is full bandwidth, the SLOT offset is 6 and 16, and each SLOT allocates 1 periodic CSI-IM, and occupies symbol 12.
(40) Establishing a configuration scheme for performing rate matching by the ZP CSI-RS: the ZP CSI-RS is a 0-power CSI-RS intended for rate matching of PDSCH, i.e. PDSCH may be sent on symbols of NZP CSI-RS but without using RE symbols occupied by ZP CSI-RS. At present, because the rate matching function of the PDSCH is not used, the symbol where the NZP CSI-RS is located can only be exclusive and cannot be shared with the PDSCH, and the TRS cannot be configured to the last symbol of the SLOT because of the constraint of the protocol, so that the PDSCH cannot realize continuous scheduling of all symbols in the whole downlink SLOT, the performance of the peak rate and throughput rate of the cell is greatly affected, and the smaller the NZP CSI-RS period, the more the resource occupation and the larger the influence.
As shown in fig. 4, the step of (40) establishing a configuration scheme for performing rate matching by the ZP CSI-RS includes:
(401) The resource allocation structure of the ZP CSI-RS is established, as defined by the 38331 protocol, and the ZP CSI-RS and NZP CSI-RS resource allocation structures are identical, but differ in message allocation structure, and mainly are different in RRC layer IEs. For ZP CSI-RS, the structure is configured according to the message of PDSCH-Config IE- > ZP-CSI-RS-Resource eServer IE- > ZP-CSI-RS-Resource.
(402) Establishing the time domain characteristic of ZP CSI-RS configuration, 38331 protocol defines that 1 or more aperiodic, semi-persistent and periodic ZP-CSI-RS-resource set can be configured for UE, and the periodic configuration is selected.
(403) The number of resource configurations of the ZP CSI-RS is established. The patent defines 6 ZP CSI-RS resources, mapping 4 TRSs and 2 NZP CSI-RS for CSI feedback, respectively.
(404) And establishing the resource configuration parameters of the ZP CSI-RS. In order to realize rate matching of PDSCH by RE occupied by NZP CSI-RS, the influence of resource allocation of the NZP CSI-RS on peak cell rate and throughput rate is reduced, and the resource allocation parameters of 6 ZP CSI-RSs are respectively consistent with the mapped NZP CSI-RSs.
(50) And performing the algorithm design and implementation of PDSCH rate matching on the REs configured by the ZP CSI-RS.
As shown in fig. 5, the step of (50) performing PDSCH rate matching on ZP CSI-RS configured REs includes:
(501) And obtaining PDSCH resource scheduling results of the current scheduling SLOT, wherein the PDSCH resource scheduling results comprise MCSTable, a start symbol, the number of symbols, a start RB, the number of RBs, allocated MCS and RANK information, and calculating TBSIZE.
(502) Judging whether the current scheduling SLOT contains ZP CSI-RS rate matching indication, if so, turning to (503), otherwise turning to (512) to successfully finish the PDSCH resource scheduling step;
(503) Judging whether the RE allocated by PDSCH resource is overlapped with the RE allocated by ZP CSI-RS, if so, turning to (504), otherwise turning to (512) to successfully finish the PDSCH resource scheduling step;
(504) Calculating the number of RE overlapping RE allocated by PDSCH resource and RE allocated by ZP CSI-RS;
(505) Calculating the effective RE quantity of PDSCH resource allocation (subtracting the RE quantity overlapped with the RE allocated by ZP CSI-RS);
(507) Calculating the coding efficiency of the PDSCH using the effective RE resources;
(507) Judging the coding efficiency, if the coding efficiency is smaller than 0.95, turning to (512) successfully ending the PDSCH resource scheduling step, otherwise turning to (508);
(508) Acquiring a list of MCS values of the current MCS order of the PDSCH, selecting an MCS value smaller than the current MCS from the list, and recalculating the PDSCH coding efficiency by using the lowered MCS value until the coding efficiency of a PDSCH channel is smaller than 0.95;
(509) If the rate matching is successful, turning to (512) successfully ending the PDSCH resource scheduling step, otherwise, turning to (510) a step of increasing the RB number required by PDSCH scheduling;
(510) Increasing the RB number required by PDSCH scheduling, re-distributing RB resources for PDSCH, and performing rate matching;
(511) If successful, go to (512) successfully end PDSCH resource scheduling step, otherwise, return to (513) scheduling failure step.
(512) Successfully ending the PDSCH resource scheduling and returning.
(513) PDSCH resource scheduling fails and returns.
The method for carrying out PDSCH rate matching aiming at RE resources occupied by the CSI-RS can realize sharing of symbol resources by the PDSCH and the NZP CSI-RS, effectively improve the utilization rate of time-frequency domain resources, and simultaneously, the base station can acquire the channel quality in real time through the measurement feedback of the UE to the NZP CSI-RS, so that the base station can adjust the scheduling parameters of the UE in time, reduce the business BLER and effectively improve the downlink peak rate and throughput rate of a cell.
The specific implementation manner of this embodiment may be referred to the related description in the foregoing embodiment, which is not repeated herein.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution device. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or part of the steps carried out in the method of the above embodiments may be implemented by a program to instruct related hardware, and the corresponding program may be stored in a computer readable storage medium, where the program when executed includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented as software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The invention adopts the CSI-RS RE rate matching processing method, the device, the processor and the computer readable storage medium thereof for improving the downlink throughput rate of the cell, and obviously improves the downlink peak rate and the throughput rate of the cell of the base station system.
In this specification, the invention has been described with reference to specific embodiments thereof. It will be apparent, however, that various modifications and changes may be made without departing from the spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.

Claims (8)

1. The CSI-RS RE rate matching processing method for improving the downlink throughput rate of a cell is characterized by comprising the following steps of:
(1) Configuring BWP parameters, CSI-RS parameters and CSI parameters shared by multiple UE of a 5G NR TDD system base station;
(2) Establishing an NZP CSI-RS resource allocation scheme;
(3) Establishing a resource allocation scheme of the CSI-IM;
(4) Establishing a resource allocation scheme of the ZP CSI-RS;
(5) And calculating the number of overlapped REs, the number of effective PDSCH REs and PDSCH coding efficiency, reducing the MCS value or increasing the number of RBs required by PDSCH scheduling, and completing PDSCH resource scheduling by rate matching.
2. The CSI-RS RE rate matching processing method for improving a downlink throughput of a cell according to claim 1, wherein the step (1) specifically includes the steps of:
(1.1) configuring an uplink dedicated BWP parameter and a downlink dedicated BWP parameter of a full bandwidth;
(1.2) configuring the number of target UEs supportable by the uplink dedicated BWP;
(1.3) defining the application of the CSI-RS through parameter configuration, and configuring corresponding CSI-RS resources according to requirements;
(1.4) configuring PUCCH resources reported by the periodic CSI.
3. The CSI-RS RE rate matching processing method for improving a downlink throughput of a cell according to claim 1, wherein the step (2) specifically includes the steps of:
(2.1) allocating resources of a time-frequency domain tracking reference signal TRS;
(2.2) allocating resources of the NZP CSI-RS for CSI feedback;
(2.3) allocating resources of the NZP CSI-RS for mobility management.
4. The CSI-RS RE rate matching processing method for improving a downlink throughput of a cell according to claim 1, wherein the step (4) specifically includes the steps of:
(4.1) establishing a resource allocation structure of the ZP CSI-RS;
(4.2) establishing time domain characteristics of the ZP CSI-RS configuration;
(4.3) establishing a number of resource configurations of the ZP CSI-RS;
(4.4) establishing the resource configuration parameters of the ZP CSI-RS.
5. The CSI-RS RE rate matching processing method for improving a downlink throughput of a cell according to claim 1, wherein the step (5) specifically includes the steps of:
(5.1) acquiring a PDSCH resource scheduling result of the current scheduling SLOT, and calculating TBSIZE;
(5.2) judging whether the current scheduling SLOT contains a ZP CSI-RS rate matching instruction, if so, continuing to the step (5.3); otherwise, continuing the step (5.12), and ending the PDSCH resource scheduling step;
(5.3) judging whether the RE allocated by PDSCH resource is overlapped with the RE allocated by ZP CSI-RS, if so, continuing the step (5.4); otherwise, continuing the step (5.12), and ending the PDSCH resource scheduling step;
(5.4) calculating the number of REs, which are allocated by PDSCH resources and are overlapped with the REs allocated by ZP CSI-RS;
(5.5) calculating the effective RE quantity of PDSCH resource allocation;
(5.6) calculating coding efficiency of PDSCH using effective RE resources;
(5.7) judging the coding efficiency, if the coding efficiency is smaller than 0.95, continuing the step (5.12), and ending the PDSCH resource scheduling step; otherwise, continuing to step (5.8);
(5.8) obtaining a list of MCS values of the current MCS order of the PDSCH, selecting an MCS value smaller than the current MCS, and recalculating PDSCH coding efficiency by using the lowered MCS value until the coding efficiency of a PDSCH channel is smaller than 0.95;
(5.9) judging whether the rate matching is successful, if so, continuing the step (5.12), and ending the PDSCH resource scheduling step; otherwise, continuing to step (5.10), and increasing the RB number required by PDSCH scheduling;
(5.10) increasing the number of RBs required by PDSCH scheduling, and reallocating RB resources for the PDSCH to perform rate matching;
(5.11) judging whether the rate matching is successful, if so, continuing the step (5.12); otherwise, the PDSCH resource scheduling fails and returns;
(5.12) the PDSCH resource scheduling is successful and returns, and the PDSCH resource scheduling step is ended.
6. An apparatus for performing CSI-RS RE rate matching processing for improving downlink throughput of a cell, the apparatus comprising:
a processor configured to execute computer-executable instructions;
a memory storing one or more computer-executable instructions which, when executed by the processor, implement the steps of the CSI-RS RE rate matching processing method for improving cell downlink throughput as recited in any one of claims 1 to 5.
7. A processor for performing CSI-RS RE rate matching processing for improving the downlink throughput of a cell, wherein the processor is configured to execute computer executable instructions that, when executed by the processor, implement the steps of the CSI-RS RE rate matching processing method for improving the downlink throughput of a cell according to any of claims 1 to 5.
8. A computer readable storage medium having stored thereon a computer program executable by a processor to implement the steps of the CSI-RS RE rate matching processing method for improving cell downlink throughput according to any of claims 1 to 5.
CN202310327110.8A 2023-03-30 2023-03-30 CSI-RS RE rate matching method and device for improving downlink throughput rate of cell, processor and storage medium thereof Pending CN116346286A (en)

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