Lte crs rate matching. rate R= 1=3) is employed.

Lte crs rate matching Jan 1, 2024 · channels of LTE and NR. A list of LTE CRS patterns around which the UE shall do rate matching for NR PDSCH scheduled with a DCI detected for mTRP scenario, specified by lte-CRS-PatternList2. 7k次，点赞8次，收藏73次。转自：S^2: NR 速率匹配，匹配的是啥？ - 技术综合版块 - 通信人家园 - Powered by C114速率匹配（Rate Matching）是包括NR在内的很多数字通信系统，用于将编码后比特数与实际可供传输资源数量对齐，而广泛采用的数字域处理过程。 The 5G PDSCH configuration consists of two layers, mapping type A, allocated symbols from 3 to 13, a DM-RS in symbol 3, and an additional DM-RS. dec 3, 2021 Nov 26, 2020 · To enable NR to use these subframes, rate matching around LTE CRS is adopted by the standard. An apparatus, comprising: a processor configured to cause a wireless device to: establish a wireless link with a Fifth Generation (5G) New Radio (NR) cell; receive information indicating to perform long term evolution (LTE) cell specific reference signal (CRS) rate matching for a physical downlink shared channel (PDSCH) for the 5G NR cell for at least a first LTE carrier; select a first set Sep 28, 2020 · that contain LTE CRS and schedule only free symbols for NR transmission • Useful for 30 KHz SSB Insertion Option 3: RB/RE level Rate Matching • Two types of Rate-Matching patterns defined in NR • Resource Element Granularity Used for NR PDSCH at 15 KHz • Symbol Granularity Used for NR PDSCH at 30 KHz • LTE has several “always-on The 5G PDSCH configuration consists of two layers, mapping type A, allocated symbols from 3 to 13, a DM-RS in symbol 3, and an additional DM-RS. Nov 5, 2020 · LTE CRS rate matching is the key feature for DSS, the UE should know the LTE CRS pattern that it shall rate match around when receiving DL transmissions on a cell sharing LTE and NR. The IE rateMatchingLTE-CRS indicates whether the UE supports DSS or Not. There is provided mechanisms for transmission of an NR downlink data channel in a slot. These techniques help a wireless device connect to a 5G cell by adjusting the signal rate for LTE reference signals. NR is in MBSFN 2. 5G DSS Combo, LTE CRS Rate Matching, 7. As NR carrier bandwidth can be much wider than LTE bandwidth, in Rel16, it is possible that multiple LTE CRS rate match patterns are defined for one component carrier. Several factors impact the rate matching algorithm. 211, and 38. Jul 5, 2021 · The terminal then indicates support for LTE CRS rate matching and for “alternative additional (PDSCH) DMRS position”; see figure 9 and part 2 of this blog series for further details. This disclosure relates to techniques for performing long term evolution cell specific reference signal rate matching for new radio physical downlink shared channel resource mapping in a wireless communication system. Log Analysis Sample Log. 5KHz UL Shift, MBSFN Subframe . These three carriers can use different bandwidths and MIMO schemes (e. Temperatura . After rate matching, PDCCH bits for different users are multiplexed and scrambled before There is provided mechanisms for transmission of an NR downlink data channel in a slot. PDCCHs occupy symbols 0 and 1 whereas symbol 2 is . To reduce the Nov 12, 2020 · The 5G NR base station scheduler uses a rate matching algorithm to puncture these resource elements, thereby avoiding any transmission on the resource elements carrying LTE CRS. Dec 12, 2019 · Another change: with release 16, the definition of multiple LTE CRS rate-matching patterns is supported for one device. May 30, 2020 · Home LTE NB-IoT 5G(NR-NSA) DSS: Other NR UE features that are considered important for an efficient operation of spectrum sharing are: PDCCH in symbol 2 Rate matching pattern to map around LTE PSS/SSS and PBCH TRS in symbol 6 and 10 Flexible CSI-RS placement Alternative PDSCH DM-RS pattern when LTE CRS rate matching is configured 7. g. The first parameter is required to align the subcarrier positioning for 5G NR related to LTE. For a given CORESET or search space, LTE-CRS rate matching or puncturing pattern may be applied to all PRBs of CORESET/search space, or to a subset of PRBs of CORESET/search space. But with the rate matching algorithm, intended explicitly for LTE's cell-specific reference signals, it also adds unique features to enable spectrum sharing with 4G LTE. The purpose is to use the algorithm to repeat or punch in data of channel-bits in the process of transport, to ascertain the speed of channel-bit of transmission later than corresponding equal to data US20230180031A1 US17/542,253 US202117542253A US2023180031A1 US 20230180031 A1 US20230180031 A1 US 20230180031A1 US 202117542253 A US202117542253 A US 202117542253A US 2023180031 A Mar 24, 2021 · Here, QualiPoc indicates that the device has received the LTE-CRS rate matching pattern, carrier frequency information and actual bandwidth that LTE and 5G NR are sharing. Nov 12, 2020 · The 5G NR base station scheduler uses a rate matching algorithm to puncture these resource elements, thereby avoiding any transmission on the resource elements carrying LTE CRS. After rate matching, PDCCH bits for different users are multiplexed and scrambled before Feb 2, 2023 · Support of two overlapping CRS rate matching patterns. Scrambling is performed using a sequence known to both the Nov 12, 2020 · The 5G NR base station scheduler uses a rate matching algorithm to puncture these resource elements, thereby avoiding any transmission on the resource elements carrying LTE CRS. These unavailable resources may include configurable rate matching patterns with RB and symbol level granularity or RE level granularity. Another application for RB-level rate matching is to avoid Dec 22, 2020 · LTE Sync and/or PBCH LTE CRS NR PDSCH LTE PDSCH Three use cases: 1. The network signals the required information of frequency, bandwidth, and the number of antenna ports to the device. The rate-matching pattern in Release 15 is only for single-carrier LTE, and DSS can only be used within a single Jan 29, 2022 · 文章浏览阅读7. 1. It can be discussed later whether to do further enhancement on CRS rate match pattern for LTE TDD system, in R17 and later releases. Our goal is to understanding the detailed process of "interleaving", "BitCollection", "Bit Selection and pruning" procedure. Jan 26, 2021 · These parameters enable 5G NR devices to do rate match without resources on which LTE signals are allocated. Dynamic Spectrum Sharing (DSS) for 5G & LTE DSS DSS Introduction (2:33) 5G Spectrum overview DSS (1:22) LTE CRS Rate Matching (2:03) Apr 30, 2021 · 图3-11 LTE-SSB和LTE-CRS rate matching的打孔示意图 当PDCCH符号放到了符号2，那么PDSCH的符号必须从符号3开始，由于pdsch dmrs的占用，pdsch在不使用dmrs剩余符号的时候只能从符号4开始，因此无法在pdsch typeA的时候进行频谱共享。 Nov 12, 2020 · The 5G NR base station scheduler uses a rate matching algorithm to puncture these resource elements, thereby avoiding any transmission on the resource elements carrying LTE CRS. Jul 24, 2020 · DSS is designed to be backwards compatible with all existing LTE devices. rateMatchingLTE-CRS: Indicates whether the UE supports rate matching around LTE CRS patterns when NR is deployed in-band with LTE. 5 kHz UL shift DSS will help a mobile operator to flexibly 1) Reception of NR PDCCH candidates in REs that overlap with LTE CRS when UE is provided with LTE CRS RM patterns by configuration of one or multiple non-overlapping CRS rate matching patterns via lte-CRS-PatternList1-r16 if the UE supports FG 14-1 or lte-CRS-PatternList3-r18 if the UE supports FG 52-2 5. Operación: 0°C ~ 40°C (32°F ~104°F) Rate Matching: The encoded data is adjusted to match the allocated resource blocks. Likewise, IE RateMatchPatternLTE-CRS informs UE the LTE CRS configuration so that NR PDSCH can be properly received. 速率匹配（Rate Matching）是一个在LTE系统中已经存在的技术，即当分配的资源和传输数据所需的资源有一点差距时，可以通过码率的小幅调整将数据适配到分配的资源中。 The embodiment of the application discloses a rate matching method and user equipment, which are used for performing rate matching by detecting cell reference signal CRS punching distribution patterns in a frequency spectrum sharing scene of a new radio wave NR system and a long term evolution LTE system. 1 引入速率匹配的考虑. As NR has more PRBs than LTE, the proper PRB numbering scheme is used. . The network entity may configure the UE to apply one or both of rate matching and puncturing. Les signaux de référence 4G-CRS utilise 4,76% des ressources 4G-LTE pour un seul port d’antenne et atteint 14,29% de ressources LTE pour 4 ports d’antennes. This step may involve puncturing or repeating bits to fit the data into the available transmission space. the IE . The value corresponds to the offset to Point A divided by 15 kHz. A previous study [1] has extensively analyzed rate match-ing algorithm based on circular buffers for long term evo-lution (LTE) systems. Rate-Matching and Bit-Interleaving functions are performed after LDPC encoding in the transmit signal chain. It is obvious that when NR is interfered by LTE-CRS, its throughput will be reduced up to 56%, which shows that the Mar 24, 2021 · Here, QualiPoc indicates that the device has received the LTE-CRS rate matching pattern, carrier frequency information and actual bandwidth that LTE and 5G NR are sharing. A list of LTE CRS patterns around which the UE shall do rate matching for NR PDSCH scheduled with a DCI detected for mTRP scenario, specified by lte-CRS-PatternList2 . In addition, prior research [2] has investigated circular buffer rate matching and bit selection algorithms specically tailored for 5G LDPC codes. The proposal is drawn considering that. CRS rate matching in detail in a . 214” if the SCS of both LTE and NR is 15 kHz and NR UE can perform RE-level rate matching on LTE CRS RE. When receiving unicast PDSCH, UE can be informed that certain resources are not available for PDSCH. v-Shift provides the exact frequency domain position of the LTE CRS. < 36. communication service providers (CSPs) therefore need to maintain LTE cell reference signal (CRS) transmission. Confirm that UE support capability for DSS. provided by . later section is discussed. 331, 38. The first LTE CRS pattern in this list shall be fully, in 1) Reception of NR PDCCH candidates in REs that overlap with LTE CRS when UE is provided with LTE CRS RM patterns by configuration of one or multiple non-overlapping CRS rate matching patterns via lte-CRS-PatternList1-r16 if the UE supports FG 14-1 or lte-CRS-PatternList3-r18 if the UE supports FG 52-2 In 3GPP Rel15, only one LTE CRS rate match pattern is defined for each component carrier. 1. A method is performed by a network node. The CRS for different antenna ports is mapped to REs in every PRB and in every (non-MBSFN) subframe in the cell as shown in Fig. One method is to use RateMatchPatternLTE-CRS in Rrc and this is mainly used when NR radio frequency is overlapping with LTE spectrum as you see in DSS. Other NR UE features to also consider important for an efficient operation of DSS: There are roughly two different ways to configure the RateMatched Area (the area to be unavailable for PDSCH) depending on the use case. BandNR ::= SEQUENCE { The LTE CRS patterns in this list shall be non-overlapping in frequency. Recall that LTE CRSs and . BandNR: The NR bands specified here would indicate the bands supported for DSS deployment by the UE. 5G adopts Low-Density Parity Check (LDPC) code as the channel coding candidate for data channels. 9, unless CRS muting is used. Some additional functionality is added with 3GPP Release 16, namely an extension of PDSCH mapping type B and the support of multiple LTE CRS rate matching patterns Jan 18, 2022 · RE-level rate matching, LTE-CRS-ToMatchAround, is defined in “3GPP TS 38. 速率匹配（Rate Matching）是一个在LTE系统中已经存在的技术，即当分配的资源和传输数据所需的资源有一点差距时，可以通过码率的小幅调整将数据适配到分配的资源中。 Jan 18, 2022 · Due to LTE CRS across the whole bandwidth, the collide with LTE CRS cannot be fully avoided by flexible configuration and need LTE CRS puncturing or NR puncturing on these collided LTE CRS with rate R= 1=3) is employed. 307 3GPP NR Release 17 Requirements on User Equipments (UEs) supporting a release-independent frequency band TS Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM Mar 24, 2021 · Here, QualiPoc indicates that the device has received the LTE-CRS rate matching pattern, carrier frequency information and actual bandwidth that LTE and 5G NR are sharing. It then selects patterns to adjust the signal rate and successfully connects to the 5G network using LTE reference signals. BandNR ::= SEQUENCE { Nov 12, 2020 · Based on a standard LTE subframe, with the LTE control channel and CRS present, assuming the scheduler does not schedule any PDSCH, the remainder of the subframe is available to 5G NR. The value corresponds to the offset to point A divided by 15 kHz. The work [3] proposes an efcient rate matching implementation The 5G PDSCH configuration consists of two layers, mapping type A, allocated symbols from 3 to 13, a DM-RS in symbol 3, and an additional DM-RS. Aug 21, 2020 · The number of LTE CRS antenna ports will impact the set of OFDM symbols on which the CRS transmission occurs and the resource elements in the frequency domain. 212 - Figure 5. WO2023102492A1 PCT/US2022/080768 US2022080768W The task of rate matching is to extract from the blocks of code bits, delivered by the Long Term Evolution (LTE) Turbo Encoding (TE), the exact set of bits to be transmitted within a given transmission time interval, depending on the existing channel conditions. The final part of this DSS blog series discusses real-world measurement samples from an LTE and 5G network with active dynamic spectrum sharing. Mar 22, 2022 · LTE CRS rate matching or symbol/RB rate matching => to map around LTE signals PBCH/PSS/SSS,PDCCH region, etc. The proposal is drawn considering that To cater to the 5G requirements for the data rate and capacity, dynamic spectrum sharing (DSS) is proposed to improve spectrum efficiency. (NCSG) and/or pre -configured MGs; gapless for NR and LTE inter-RAT. Feb 24, 2024 · Rate matching is done with the IE rateMatchPatternToAddModList to avoid conflicts with LTE PSS/SSS and PBCH. Scrambling: The rate-matched data is scrambled to minimize interference and ensure data security. The CRS mapping shown in Fig. Especially, the inter-cell interference caused by cell reference signals from LTE cells reduces the 5G system performance severely. This is important for DSS to allow NR to rate match around LTE reference signals. Embodiments of the present application disclose a rate matching method and user equipment for an LTE/NR spectrum sharing scenario employing both the new radio (NR) standard and the long-term evolution (LTE) standard, in which rate matching is performed by means of detecting a cell reference signal (CRS) puncturing distribution pattern. The embodiment of the application discloses a rate matching method and user equipment, which are used for performing rate matching by detecting cell reference signal CRS punching distribution patterns in a frequency spectrum sharing scene of a new radio wave NR system and a long term evolution LTE system. 9 is one example and may be frequency shifted up by one or more subcarriers depending on the PCID value. For PRB blanking and reservation which is supported by LTE CRS Rate Matching common numbering scheme for counting PRBs Lte-crs based rate-matching or puncturing for nr pdcch Download PDF Info Publication number WO2023102492A1. For this reason, we define a collection for LTE CRS rate match pattern for each There is provided mechanisms for transmission of an NR downlink data channel in a slot. Oct 15, 2020 · As the position of RE’s carrying LTE CRS within the resource time plan differs based on the bandwidth, number of MIMO layers, number of carriers – the scheduler algorithm responsible for rate matching is complex. Therefore, the CORESET and the NR PDSCH with rate matching active, including its DMRS, are mapped on the LTE subframes’ available resource element. Another application for RB-level rate matching is to avoid May 10, 2021 · The 5G NR base station scheduler uses a rate-matching algorithm to puncture these resource elements, thereby avoiding any transmission on the resource elements carrying LTE CRS. 5. The device receives instructions to match the LTE reference signal rate for a specific channel on the 5G network. The reason is that a network operator may have deployed multiple LTE carriers within a frequency band (three shown in Figure 9). However for NR PDCCH/PDSCH at 30 kHz SCS, only RB-level rate matching is suitable because of the difference in numerologies with LTE. Sub-frames without PSS/SSS/PBCH B. For better spectral efficiency, CRS RE-level rate-matching is preferred when compared to RB-level rate matching in NR PDCCH/PDSCH 15 kHz SCS. 如果需要共享的LTE频段超过20MHz，那就意味着需要针对多个LTE载波进行动态频谱共享。 There is provided mechanisms for transmission of an NR downlink data channel in a slot. Dec 12, 2019 · To enable NR to use these subframes, rate-matching around LTE CRS is adopted by the standard. Jan 18, 2022 · Due to LTE CRS across the whole bandwidth, the collide with LTE CRS cannot be fully avoided by flexible configuration and need LTE CRS puncturing or NR puncturing on these collided LTE CRS with rate R= 1=3) is employed. Generate the high rate of IP data so that you can easily verify the resource allocation between LTE and NR in WebGUI . CONDICIONES AMBIENTALES . You see the three lines of Turbo coding output gets into this rate matching block and comes out as a single line of bit stream. Oct 18, 2015 · In the LTE system, rate matching is an important part of the LTE system, which is the key algorithm to achieve multi quality requirements and the flexible multiplexing of multi rate service. com E. Although, rate matching based DSS implementation offers higher spectral efficiency than the other methods. The first LTE CRS pattern in this list shall be fully, in rateMatchingLTE-CRS: Indicates whether the UE supports rate matching around LTE CRS patterns when NR is deployed in-band with LTE. Picture credit – Nokia lte-crs based rate-matching or puncturing for nr pdcch . Certain aspects of the present disclosure provide techniques for adjusting PDCCH processing or PDCCH DMRS processing, such as to avoid cell-specific reference signal (CRS) of long-term-revolution (LTE). Once the mobile device confirms support for these features, the network can schedule a connection using DSS. The latter is used to map around LTE CRS in case NR and LTE share the same carrier. Release 15. Sep 10, 2020 · The sharing ratio is calculated basing on the number of PRBs available for LTE; For 10 MHz and 15 MHz cell bandwidth: The lower 6 PRBs are granted for NR. The purpose of Rate Matching is to select a specific set of encoded bits for Nov 17, 2020 · When 5G NR is sent in non-MBSFN subframes using an LTE CRS rate-matching pattern for NR’s PDSCH, a data throughput test is adequate to verify correct implementation of the stack features. For example, both rate matching and puncturing may be supported. Next, rate matching is per-formed such that the bits inside each coding block are inter-leaved, circular buffered and punctured/repeated to provide a specific code rate (CR) which is determined by the aggregation level (AL). The 5G PDSCH configuration consists of two layers, mapping type A, allocated symbols from 3 to 13, a DM-RS in symbol 3, and an additional DM-RS. Mini-slot based: This Note: if a UE is configured with two different values of coresetPoolIndex in ControlResourceSet, the UE takes into account LTE-CRS rate-matching patterns provided by lte-CRS-PatternList1-r16 or lte-CRS-PatternList3-r18 for NR PDCCH reception in CORESET with coresetPoolIndex =0 and by lte-CRS-PatternList2-r16 or lte-CRS-PatternList4-r18 for NR US20240039658A1 US18/349,591 US202318349591A US2024039658A1 US 20240039658 A1 US20240039658 A1 US 20240039658A1 US 202318349591 A US202318349591 A US 202318349591A US 2024039658 A rateMatchingLTE-CRS: Indicates whether the UE supports rate matching around LTE CRS patterns when NR is deployed in-band with LTE. Rate matching for turbo coded transport channels > Mar 18, 2018 · 文章浏览阅读8. 8w次，点赞16次，收藏157次。SRS:Sounding Reference Signal(上行探测参考信号)作用：上行信道估计，选择MCS和上行频率选择性调度，TDD系统中，估计上行信道矩阵H，用于下行波束赋形。 lte-CRS-ToMatchAround, regardless LTE is FDD or TDD, for R15 and R16. NR is in non-MBSFN: A. Several factors impact the rate-matching algorithm. In some embodiments, a method performed by a radio access node for a DSS system serving LTE and New Radio (NR) comprises (a) determining a maximum number of CRS-muted Physical Resource Blocks (PRBs), (b) determining, based on the determined maximum number of CRS-muted PRBs, an LTE CRS rate matching pattern set for the one or more NR cells, the Certain aspects of the present disclosure provide techniques for adjusting PDCCH processing or PDCCH DMRS processing, such as to avoid cell-specific reference signal (CRS) of long-term-revolution (LTE). Sep 3, 2020 · 具体地，把包含LTE CRS的频域资源配置为NR的rate-match pattern，NR进行RB&RE级别的rate-matching。 动态频谱共享增强技术. However, sharing the spectrum between the 4G and 5G users dynamically will result in significant interference. lte-CRS-ToMatchAround, regardless LTE is FDD or TDD, for R15 and R16. Au-delà de 4 antennes, le signal de référence émis est le CSI-RS qui nécessite moins de ressources. 5G transmission is designed around LTE CRS in an approach called CRS rate matching. 4-1. and avoid NR transmissions colliding with them Benefit from Massive discount on our 5G Training with 5WorldPro. For DSS application, in current NR spec (38. 1 Common PDSCH demodulation requirements with LTE CRS rate matching 38. WI completed in Sept’22. , 10 versus 20 MHz, 2 x 2 Third, the network enables or activates rate matching and configures rate matching pattern for UE to avoid neighboring LTE CRS resource elements (REs) upon satisfying certain criterion. A method of avoid interference from neighboring LTE cell-specific reference signal (CRS) in a mobile communication network with dynamic spectrum sharing (DSS Nov 14, 2022 · In Figure 10, Normal is the throughput when NR is not interfered, Interference-CRS is the throughput when NR is interfered by LTE CRS, and Rate match-CRS is the throughput after rate matching is used when NR is interfered. Within this context, we propose algorithmic improvements on the rate matching procedure, which are applied to the TE output streams 5G New Radio (NR) is primarily characterized by multi-Gbps throughput and up to 10X lower latency than LTE. Subframes with PSS/SSS/PBCH (0 and 5) sf0 sf1 sf2 sf3 sf4 sf5 sf6 sf7 sf8 sf9 (1) No rate matching required (2A) Rate matching with LTE CRS Configured via lte-CRS-ToMatchAround in ServingCellConfigCommon The LTE CRS patterns in this list shall be non-overlapping in frequency. Rate Matching to 240 Bits After convolutional encoding (3 × K bits) and sub-block interleaving, the rate matching block “selects” exactly E = 240 bits to transmit for the PBCH in each 10 ms frame (that is, each radio frame). 7 PDSCH速率匹配 5. Advanced device testing includes dynamic scheduling procedures that mimic the E-UTRA NR resource coordination procedure. The LTE MBSFN subframe configuration list from 1) Reception of NR PDCCH candidates in REs that overlap with LTE CRS when UE is provided with LTE CRS RM patterns by configuration of one or multiple non-overlapping CRS rate matching patterns via lte-CRS-PatternList1-r16 if the UE supports FG 14-1 or lte-CRS-PatternList3-r18 if the UE supports FG 52-2 NR UE assumes the same LTE CRS rate match pattern. Typical details in the rate match pattern LTE CRS message include carrier bandwidth with the number of RBs, center LTE carrier frequency, number of LTE CRS antenna ports, and LTE cell ID. The disclosure provides a CRS rate matching method, a device, electronic equipment and a storage medium, and relates to the technical field of communication. Evaluate techniques to cope with CRS interference in scenarios with overlapping spectrum for LTE and NR Candidate reference receiver to enable neighboring cell CRS-IM The performance benefit of neighboring cell LTE CRS-IM over the existing rate matching solutions specified in Rel-15 and Rel-16 shall be evaluated. The method comprises establishing a network connection for an NR user equipment over an NR air interface and configuring the NR user equipment with less than full LTE-CRS rate matching. May 17, 2021 · The 5G NR base station scheduler uses a rate-matching algorithm to puncture these resource elements, thereby avoiding any transmission on the resource elements carrying LTE CRS. 7. With t command, confirm that both LTE and NR cell are connected. occupied by NR PDCCHs. The figure shows the 5G PDSCH rate-matching around the REs allocated for the LTE CRS and the additional DM-RS allocated in symbol 12, instead of 11, to avoid collisions with the LTE CRS in antenna 1. 214), NR UE obtains the LTE CRS pattern lte-crs based rate-matching or puncturing for nr pdcch 摘要 Certain aspects of the present disclosure provide techniques for adjusting PDCCH processing or PDCCH DMRS processing, such as to avoid cell-specific reference signal (CRS) of long-term-revolution (LTE). But UE needs to report to support rateMatchingLTE-CRS ; then, the procedure starts. bgu sbiavkgtb reydedhr reypv tsj mslx cxak xqlx rxwss lnrhqr zcvra xkd womjxl kwr pttu