Both legacy SRS and additional SRS can be configured to the same UE, and . Semi-persistent SRS SRS antenna selection: Independent SRS power control, 1T2R/1T4R/2T4R decoupled from the PUSCH Precoded SRS and non-precoded . 探测参考信号srs传输方法及通信装置 技术领域 1.本技术实施例涉及电子技术领域，尤其涉及一种srs传输方法及通信装置。 背景技术： 2.探测参考信号(sounding reference signal，srs)是用于测量上行信道的一种参考信号。 网络设备可以基于终端设备发送的srs进行上行信道测量，以获取上行信道的信道状态 . 8.2 Physical layer procedure 40 . 比如说终端支持1 TX 4 RX，但是由于平台或是前端架构限制，可以不支持SRS，可以支持1T2R的SRS，也可以支持1T4R的SRS。 所以在说SRS的时候1T2R 叫round比较合理。 Here, UE capabilities that indicate that the UE support such switching are defined as 1T2R, 1T4R, or 2T4R. Therefore, the cost of the RF front-end has also increased from less than US$5 in the 4G era to US$22 (1T4R). 예를 들어, 현재 한 slot 내에 SRS가 설정될 수 있는 위치는 slot 끝부터 최대 6 symbol이기 때문에, 15kHz subcarrier spacing(μ=0)의 1T4R case (i.e., 1 tx antenna와 4 rx antenna를 가진 단말로, antenna switching에 최소 4 SRS resource가 필요함) 에서는 4 1-symbol SRS resource + 3 1-symbol guard period가 . In Rel-15/Rel-16, for antenna switching, multiple (up to two) aperiodic SRS resource set(s) can be introduced, for example, 1T4R (e.g., 1 Tx chain and 4 receive antennas). And a UE can additionally be configured with frequency hopping for the additional SRS. PDF 5G is Here Are You Ready - SOI Industry Consortium LTE: New Evolution, New Growth Opportunities 1.1. Promote efficiently use of TDD 2.3GHz spectrum and accelerate commercial launch by global operators. It adopts a full- drop water design, a 2280× . 5G New Radio is designed to fit these requirements, with physical layer components that . 116-获取CSI的sounding流程. And a UE can additionally be configured with frequency hopping for the additional SRS. All systems components have a 50 Ω characteristic impedance. - Up to 4 Tx antenna ports(CRS) - Fixed pattern, overhead - Up to 32 Tx antenna ports(CSI-RS) - Configurable pattern, overhead - Up to 32 Tx antenna ports (CSI-RS) - Support for above 6GHz <자료> NR Physical Layer Design: NR MIMO, 3GPP RAN Workshop, RWS-180008, Brussels, 24-25 Oct. 2018 Sounding Reference Signal (SRS) SRS는 CSI-RS를 쏘는 주체와 받는 주체가 바뀌었다고 생각하면 된다. 3. 4. 116-获取CSI的sounding流程. extended cyclic prefix normal cyclic prefix, l = 0 or l = 7 2 normal cyclic prefix, l 0 and l 7 2 . uses wideband signal correlation with switching at the transmitter and parallel acquisition at the receiver, as shown in Figure 1, below. It depends on UE capability on supportedSRS-TxPortSwitch which can be 1T2R or 1T4R or 2T4R or T=R BBIC RFIC PA Switch Filter Antenna ≥31dBm ≥3dBm ≤33dBm . Some implementations more specifically relate to scheduling sounding reference signal (SRS) resource sets for wireless devices having more than 4 receive (RX) antenna ports. GTI calls for 2.3GHz Band Industry development to speed up ... US Patent Application for METHOD AND APPARATUS FOR ... PC3 PA≈500mA@MOP PC2 PA≈1A@MOP . 11A, the 3P3T switches allow each transmit chain to switch among four antennas for SRS UL 1T4R antenna switching. Promote the devices industry chain to make mandatory the support of NR 2.3GHz frequency in 2022, and better support key features such as EN-DC, carrier aggregation, SUL, 1T4R/2T4R SRS Antenna Switching and 80~100 MHz channel bandwidth. 5G - Frame Structure - 5G | ShareTechnote The number of antennas (pairs) to switch is:- 2 for 1T2R, or the number of pairs is configured as 2 for 2T4R- 3 if the number of pairs is configured as 3 for 2T4R - 4 for 1T4R. 8.15 would imply that the UE needs to report 1T1R capability since it can only transmit SRS from one of the receive antennas as there is no antenna switching implemented. 2.确实是有个SRS antenna switching的概念，但是不知道是否是这里的SRS轮发 . 11A, the first switch 1140-1 is coupled to the third switch 1140-3, and the second switch 1140-2 is coupled to the fourth switch 1140-4. By considering it, (the minimum) guard period as in the following Table 7 may be defined. Sounding Reference Signal (Srs) Transmission With ... 获取CSI的sounding流程. Antenna configuration at TRxP Antenna configuration at UE Receiver OFDMA Up to 256 QAM FDD: 6.4% (for 10 MHz bandwidth) TDD: 8.2% (51 RB for 30kHz SCS and 20 MHz bandwidth) TDD: 4.6% (106 RB for 15kHz SCS and 20 MHz bandwidth) Companies to Report: • Precoded or non-precoded SRS transmission; • SRS switch or not for 1T4R/2T4R/1T2R • SRS . 3.3.4 NR SUL Band Combinations: Uplink Carrier Selection and Switching 3.3.4.1 Single-Cell Concept 3.3.4.2 UL Carrier Selection and Switch 3.3.4.2.1 Idle Mode UL Selection: Initial Access with PRACH 3.3.4.2.2 Connected Mode UL Selection: PUSCH/PUCCH Scheduling 3.3.4.3 SRS Switching 3.3.4.4 Power Control 3.3.5 4G/5G DL Spectrum Sharing Design 11B illustrates an example of the four possible signal paths for . 5G - Frame Structure - 5G | ShareTechnote Indeed, 2.3 GHz provides both capacity and coverage, which 5G makes full use of to significantly extend the performance of legacy 4G. The Reference Solution software includes an option to perform real-time correlation and An exemplary frequency hopping case on four sub-bands is demonstrated in FIG. Srs. 즉, UE가 gNB로 보내는 Uplink Channel의 상태를 알아보기 위해 gNB로 쏘면, gNB는 현재 자신이 파악한 Channel 상태를 기반으로 UE에게 Report해주고, 앞으로의 UL에 반영하는 방식이다. 512 2 − = 144 2 − + 16 144 2 − . SRS is a UL reference signal which is transmitted by UE to Base station. up to 256 antennas Enabled through an advanced 5G NR end-to-end Massive MIMO design (network and device) Exploit 3D beamforming with up to 256 antenna elements Accurate and timely channel knowledge essential to realizing full benefits UL SRS 5G NR co-located with CSI-RS existing LTE macro sites Mitigate UL coverage with 5G NR massive MIMO + HPUE3 When antenna switching is applied, about 15/LS may be generally needed between SRS resources (and/or resources between a SRS resource and a PUSCH/a PUCCH) for antenna switching of a terminal. LTE Standards Are Evolving towards the 2020s The introduction and increasing use of mobile devices (e.g., smart phones and tablets) and various CP length for different SCS values: -. Find Parts and Accessories remote antenna switch KEYWORD and get Free Shipping on Most Orders Over $99 at DX Engineering! The SRS configuration configures at least one antenna to simultaneously support SRS antenna switching and an uplink (UL) multiple-input . Promote the devices industry chain to make mandatory the support of NR 2.3GHz frequency in 2022, and better support key features such as EN-DC, carrier aggregation, SUL, 1T4R/2T4R SRS Antenna Switching and 80~100 MHz channel bandwidth. Defines whether UE supports SRS antenna port switching as defined in clause 6.2.1.2 of TS 38.214 [12]. 获取CSI的sounding流程. For the special case of 1T4R antenna switching with aperiodic SRS requiring two slots to complete, an exception is made such that two aperiodic sets may be configured, thus allowing a split of the four resources across two different slots (either as a 2+2 split or a 1+3 split). GPS Indoor Antenna . BEIJING, Oct. 15, 2021 /PRNewswire/ -- Ever since 4G, 2.3 GHz has been regarded as a golden frequency by global operators. UE performs antenna switching in various way depending on RRC parameter setting in SRS-ResourceSet as described in 38.214 6.2.1.2. According to our information, The Honor X10 thickness is 8.8mm and weighs about 203g. On support of SRS antenna switching for 1T4R and 2T4R antenna configurations: Huawei, HiSilicon: imported from 3GU: R1‑1803958: On support of PUSCH antenna selection for 1T4R and 2T4R antenna configurations: Huawei, HiSilicon: imported from 3GU: R1‑1803959: Introduction of SRS antenna switching for 4 ports in 36.213: Huawei, HiSilicon . L v oundation 4 1. Indeed, 2.3 . The number of antennas (pairs) to switch is:- 2 for 1T2R, or the number of pairs is configured as 2 for 2T4R- 3 if the number of pairs is configured as 3 for 2T4R - 4 for 1T4R. Both legacy SRS and additional SRS can be configured to the same UE, and . Transceiver 5G Device Type1 • 1Tx • SRS: 1T4R (1T2R until Jun.2020) GTI calls for 2.3GHz Band Industry development to speed up. When frequency hopping for a total of 4 subbands is . The scheme in Fig. 对antenna switching，协议定义了一段保护间隔Y个符号，如果同一时隙内要切换发送同一SRS resource set内的不同SRS resource，保护间隔内UE不发送任何信号，对于SCS=30kHz，Y=1： SRS-Resource 该IE主要有以下一些参数： nrofSRS-Ports transmissionComb resourceMapping freqDomainPosition . N CP ,l. If normal CP (NCP) is used, the CP of the first symbol present every 0.5 ms is longer than that of other symbols. GTI calls for 2.3GHz Band Industry development to speed up. It also promotes the devices industry chain to make mandatory the support of NR 2.3GHz frequency in 2022, and better support key features such as EN-DC, carrier aggregation, SUL, 1T4R/2T4R SRS Antenna Switching and 80~100 MHz channel bandwidth. It is a reference signal from UE to gNB. And a UE can additionally be configured with frequency hopping for the additional SRS. FIG. With parallel acquisition at the receiver, the multiple signals are captured and sent to the digitizer FPGAs for processing. 4. 8.1.6.3.2 PT-RS 39. SRS Transmit Antenna Switching Although a user's device may have four or eight receive antennas, in general, the number of its uplink transmit antennas is smaller. The indicated UE antenna switching capability of ′xTyR′ corresponds . 通过前面几期的学习，知道了在SRS-ResourceSet的usage参数可以取4个值，分别是 {beamManagement, codebook, nonCodebook, antennaSwitching}，这里我们主要学习取值为antennaSwitching的情况，在这种情况下，UE可以配置的能力是以下值中的 . 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