WO2018126356A1 - Procédé de mise à l'échelle de puissance de signal de référence de sondage (srs) - Google Patents

Procédé de mise à l'échelle de puissance de signal de référence de sondage (srs) Download PDF

Info

Publication number
WO2018126356A1
WO2018126356A1 PCT/CN2017/070144 CN2017070144W WO2018126356A1 WO 2018126356 A1 WO2018126356 A1 WO 2018126356A1 CN 2017070144 W CN2017070144 W CN 2017070144W WO 2018126356 A1 WO2018126356 A1 WO 2018126356A1
Authority
WO
WIPO (PCT)
Prior art keywords
srs
reference signal
sounding reference
power
sounding
Prior art date
Application number
PCT/CN2017/070144
Other languages
English (en)
Inventor
Yi Zhang
Yuantao Zhang
Deshan Miao
Mihai Enescu
Original Assignee
Nokia Technologies Oy
Nokia Technologies (Beijing) Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Technologies Oy, Nokia Technologies (Beijing) Co., Ltd. filed Critical Nokia Technologies Oy
Priority to PCT/CN2017/070144 priority Critical patent/WO2018126356A1/fr
Publication of WO2018126356A1 publication Critical patent/WO2018126356A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • Embodiments of the invention generally relate to wireless or mobile communications networks, such as, but not limited to, the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) , Long Term Evolution (LTE) Evolved UTRAN (E-UTRAN) , LTE-Advanced (LTE-A) , LTE-Advanced Pro, LTE-M, and/or 5G radio access technology or new radio access technology (NR) .
  • UMTS Universal Mobile Telecommunications System
  • UTRAN Long Term Evolution
  • E-UTRAN Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-M LTE-Advanced Pro
  • NR new radio access technology
  • Some embodiments may generally relate to a sounding reference signal (SRS) power scaling scheme for 5G NR.
  • SRS sounding reference signal
  • Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network refers to a communications network including base stations, or Node Bs, and for example radio network controllers (RNC) .
  • UTRAN allows for connectivity between the user equipment (UE) and the core network.
  • the RNC provides control functionalities for one or more Node Bs.
  • the RNC and its corresponding Node Bs are called the Radio Network Subsystem (RNS) .
  • RNS Radio Network Subsystem
  • E-UTRAN enhanced UTRAN
  • eNodeB or eNB evolved Node B
  • Multiple eNBs are involved for a single UE connection, for example, in case of Coordinated Multipoint Transmission (CoMP) and in dual connectivity.
  • CoMP Coordinated Multipoint Transmission
  • LTE Long Term Evolution
  • E-UTRAN refers to improvements of the UMTS through improved efficiency and services, lower costs, and use of new spectrum opportunities.
  • LTE is a 3GPP standard that provides for uplink peak rates of at least, for example, 75 megabits per second (Mbps) per carrier and downlink peak rates of at least, for example, 300 Mbps per carrier.
  • LTE supports scalable carrier bandwidths from 20 MHz down to 1.4 MHz and supports both Frequency Division Duplexing (FDD) and Time Division Duplexing (TDD) .
  • FDD Frequency Division Duplexing
  • TDD Time Division Duplexing
  • LTE may also improve spectral efficiency in networks, allowing carriers to provide more data and voice services over a given bandwidth. Therefore, LTE is designed to fulfill the needs for high-speed data and media transport in addition to high-capacity voice support. Advantages of LTE include, for example, high throughput, low latency, FDD and TDD support in the same platform, an improved end-user experience, and a simple architecture resulting in low operating costs.
  • LTE-A LTE-Advanced
  • LTE-A is directed toward extending and optimizing the 3GPP LTE radio access technologies.
  • a goal of LTE-A is to provide significantly enhanced services by means of higher data rates and lower latency with reduced cost.
  • LTE-A is a more optimized radio system fulfilling the international telecommunication union-radio (ITU-R) requirements for IMT-Advanced while maintaining backward compatibility.
  • ITU-R international telecommunication union-radio
  • 5G refers to the new generation of radio systems and network architecture.
  • 5G is expected to provide higher bitrates and coverage than the current LTE systems. Some estimate that 5G will provide bitrates one hundred times higher than LTE offers.
  • 5G is also expected to increase network expandability up to hundreds of thousands of connections.
  • the signal technology of 5G is anticipated to be improved for greater coverage as well as spectral and signaling efficiency.
  • 5G is expected to deliver extreme broadband and ultra-robust, low latency connectivity and massive networking to support the Internet of Things (IoT) . With IoT and machine-to-machine (M2M) communication becoming more widespread, there will be a growing need for networks that meet the needs of lower power, low data rate, and long battery life.
  • IoT Internet of Things
  • Narrowband IoT-LTE is envisioned to operate on 180/200 kHz channel.
  • the deployment of NB-IoT may be in-band LTE, a guard band to LTE, UMTS or other system as well as stand-alone on a specific carrier.
  • One embodiment is directed to a method of sounding reference signal (SRS) power scaling.
  • the method includes transmitting, by a network node, at least one of sounding reference signal (SRS) transmission parameters and reference signal for user equipment pathloss measurement.
  • the sounding reference signal (SRS) transmission parameters may include at least one of comb value or sounding reference signal (SRS) pattern.
  • the method may further include determining sounding reference signal (SRS) power control parameter sets for configured sounding reference signal (SRS) resources, and transmitting the determined sounding reference signal (SRS) power control parameter sets to at least one user equipment.
  • the comb value may be used as a scaling factor for the sounding reference signal (SRS) power scaling.
  • Another embodiment is directed to an apparatus, which may include at least one processor and at least one memory including computer program code.
  • the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus at least to transmit at least one of sounding reference signal (SRS) transmission parameters and reference signal for user equipment pathloss measurement.
  • the sounding reference signal (SRS) transmission parameters may include at least one of comb value or sounding reference signal (SRS) pattern.
  • the at least one memory and the computer program code may be further configured, with the at least one processor, to cause the apparatus at least to determine sounding reference signal (SRS) power control parameter sets for configured sounding reference signal (SRS) resources, and transmit the determined sounding reference signal (SRS) power control parameter sets to at least one user equipment.
  • the comb value may be used as a scaling factor for sounding reference signal (SRS) power scaling.
  • Another embodiment is directed to an apparatus, which includes transmitting means for transmitting at least one of sounding reference signal (SRS) transmission parameters and reference signal for user equipment pathloss measurement.
  • the sounding reference signal (SRS) transmission parameters may include at least one of comb value or sounding reference signal (SRS) pattern.
  • the apparatus may further include determining means for determining sounding reference signal (SRS) power control parameter sets for configured sounding reference signal (SRS) resources, and transmitting means for transmitting the determined sounding reference signal (SRS) power control parameter sets to at least one user equipment.
  • the comb value is used as a scaling factor for sounding reference signal (SRS) power scaling.
  • the method may include receiving, by a user equipment, at least one of sounding reference signal (SRS) transmission parameters and reference signal for pathloss measurement, performing reference signal received power (RSRP) measurement based on the received at least one reference signal and obtaining the reference signal received power (RSRP) and the pathloss measurement, receiving sounding reference signal (SRS) power control parameters for configured sounding reference signal (SRS) resources, and determining transmit power for each of the sounding reference signal (SRS) resources based on the pathloss measurement and the sounding reference signal (SRS) power control parameters.
  • SRS sounding reference signal
  • SRS sounding reference signal
  • Another embodiment is directed to an apparatus, which may include at least one processor and at least one memory including computer program code.
  • the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus at least to receive at least one of sounding reference signal (SRS) transmission parameters and reference signal for pathloss measurement, perform reference signal received power (RSRP) measurement based on the received at least one reference signal and obtain the reference signal received power (RSRP) and the pathloss measurement, receive sounding reference signal (SRS) power control parameters for configured sounding reference signal (SRS) resources, and determine transmit power for each of the sounding reference signal (SRS) resources based on the pathloss measurement and the sounding reference signal (SRS) power control parameters.
  • SRS sounding reference signal
  • SRS sounding reference signal
  • Another embodiment is directed to an apparatus, which may include receiving means for receiving at least one of sounding reference signal (SRS) transmission parameters and reference signal for pathloss measurement, performing means for performing reference signal received power (RSRP) measurement based on the received at least one reference signal and obtaining the reference signal received power (RSRP) and the pathloss measurement, receiving means for receiving sounding reference signal (SRS) power control parameters for configured sounding reference signal (SRS) resources, and determining means for determining transmit power for each of the sounding reference signal (SRS) resources based on the pathloss measurement and the sounding reference signal (SRS) power control parameters.
  • SRS sounding reference signal
  • SRS sounding reference signal
  • Fig. 1 illustrates an example of a procedure of multiple beam SRS transmission for beam management
  • Fig. 2a illustrates an example of a frequency division multiplexing (FDM) for multiple beam SRS management
  • Fig. 2b illustrates an example of a time division multiplexing (TDM) for multiple beam SRS management
  • Fig. 3 illustrates a block diagram depicting an example of the impact of frequency density on SRS transmission power
  • Fig. 4 illustrates an example of the high priority for beam management SRS, according to an embodiment
  • Fig. 5 illustrates a diagram depicting an example of high priority by better link quality and transmitting on primary sounding resource, according to an embodiment
  • Fig. 6 illustrates an example of a signaling diagram, according to one embodiment
  • Fig. 7a illustrates a block diagram of an apparatus, according to one embodiment
  • Fig. 7b illustrates a block diagram of an apparatus, according to another embodiment
  • Fig. 8a illustrates a flow diagram of a method, according to an embodiment
  • Fig. 8b illustrates a flow diagram of a method, according to another embodiment.
  • Certain embodiments described herein relate to 5G wireless systems with support for massive multiple-input and multiple-output (m-MIMO) . These systems are characterized by increased antenna number, finer beamforming and higher antenna gain. In particular, some embodiments relate to power scaling for SRS on account of flexible time frequency configuration and precoding/beamforming at both the transmit and/or receive side.
  • SRS refers to a reference signal (RS) transmitted by a UE in the uplink (UL) direction and used by an eNB/gNB, for example, to estimate the UL channel quality over a wider bandwidth and/or for UL frequency selective scheduling.
  • RS reference signal
  • SRS power control is linked with that for physical uplink shared channel (PUSCH) by one offset value in principle.
  • PUSCH physical uplink shared channel
  • P SRS, c (i) min ⁇ P CMAX, c (i) , P SRS_OFFSET, c (m) + 10 log 10 (M SRS, c ) + P O_PUSCH, c (j) + ⁇ c (j) ⁇ PL c + f c (i) ⁇
  • P CMAX, c (i) is the configured maximal allowed transmit power for a specific cell c
  • M SRS, c (i) is the uplink physical resource block (PRB) number for SRS transmission
  • P O_PUSCH, c (j) is the semi-static nominal power for PUSCH
  • PL c is downlink pathloss estimated in the UE for serving cell c in dB
  • ⁇ c (j) is a cell specific pathloss compensation factor to achieve balance between cell average and cell edge throughput
  • f c (i) is the PUSCH close loop power adjustment part for serving cell c
  • P SRS_OFFSET, c (m) is the offset value for power adjustment relative to PUSCH power control, which is semi-statically configured by higher layers.
  • 3GPP working groups have agreed to some basic power control principles for NR-PUSCH; however, the power control for other reference signals (RSs) still requires further study.
  • the agreed principles include that, for NR-PUSCH at least targeting enhanced mobile broadband (eMBB) , open-loop power control based on pathloss estimate is supported (pathloss is estimated using DL RS for measurement, fractional power control is supported, but which DL RS (s) for measurement is used was left for further study) and closed-loop power control is supported based on network signaling (dynamic UL-power adjustment is considered) .
  • eMBB enhanced mobile broadband
  • numerology specific power control e.g., numerology specific power control parameters
  • beam specific power control parameters e.g., beam specific power control parameters
  • power control for other RSs and physical channels e.g., power control for grant free PUSCH if supported
  • power control per layer (group) e.g., power control per layer (group)
  • certain embodiments of the present disclosure provide enhanced SRS power scaling scheme on account of flexible time frequency resource configuration and precoding/beamforming at both transmit and/or receive side for SRS.
  • 3GPP has agreed that SRS can be configured with different density, e.g., comb levels, in frequency domain.
  • the agreements include that, in NR, SRS can be configurable with respect to density in frequency domain (e.g., comb levels) and/or in time domain (including multi-symbol SRS transmissions) ; but the specifics of the configurable frequency density for SRS were left for further study. Additionally, the details on how the set of port (s) for SRS can be indicated by the gNodeB (gNB) were also left for further study.
  • gNodeB gNodeB
  • the SRS resource configuration is flexible and frequency density, e.g., comb levels, can be variable. This can be considered for a UE to determine SRS transmission power.
  • 3GPP has also agreed that multiple SRS resources (K>1) can be configured for one UE according to the UE capability.
  • the agreements include that an NR-SRS resource comprises of a set of resource elements (RE) within a time duration/frequency span and N antenna ports (N ⁇ 1) , and a UE can be configured with K ⁇ 1 NR-SRS resources (Consider the maximum value of K to be a UE capability to avoid mandatory support for large values of K) .
  • the time duration/frequency span was not agreed upon.
  • the multiplexing situation at the UE side becomes more complex, which includes simultaneous transmission for PUCCH, PUSCH and all types of SRS.
  • different SRS can be transmitted in one OFDM symbol, which are used for different precoding/beamforming, numerology and even multiple functions including downlink/uplink channel state information (CSI) acquisition and beam management.
  • CSI downlink/uplink channel state information
  • SRS may be transmitted from a UE with multiple [analogue] beams where each beam is configured with different resource in frequency domain or time domain. Therefore, these new cases should be considered for SRS power scaling in 5G NR.
  • Fig. 1 illustrates an example of a procedure of multiple beam SRS transmission for beam management.
  • the UE selects the best beam from DL beamformed RS and, at step 2, the UE sends multiple adjacent beams for accurate beam selection.
  • the gNB may then detect the best beam.
  • FDM frequency division multiplexing
  • TDM time division multiplexing
  • Figs. 2a and 2b illustrate an example of a FDM and TDM scheme, respectively, for multiple beam SRS management.
  • the power scaling scheme needs to be considered to achieve the consistence of channel estimation quality for the sounding link with different beams.
  • certain embodiments of the present disclosure provide enhanced SRS power scaling schemes, where the granularity for SRS in frequency domain (e.g., Comb) , SRS functions, link quality, robustness transmission requirement are considered.
  • the granularity for SRS in frequency domain e.g., Comb
  • SRS functions e.g., link quality, robustness transmission requirement are considered.
  • the enhanced SRS power scaling scheme (s) described herein can work well for simultaneous transmission of PUCCH, PUSCH and multiple SRS in m-MIMO system (s) with flexible beamforming.
  • the configurable frequency density e.g. Comb
  • the high priority is put on beam management SRS for guaranteeing transmission power
  • the link quality of beam pair used for SRS transmission is considered for SRS power scaling in case of multiple SRS simultaneous transmission
  • transmission robustness and flexibility controlled by gNB are considered for SRS power scaling in case of multiple SRS simultaneous transmission.
  • SRS transmit power is only related with number of PRBs and has no relation with SRS pattern.
  • the configurable frequency density e.g. comb
  • comb value is introduced into SRS power control scheme. If uniform power spectrum is assumed, SRS transmit power may be linearly increased with RE number per symbol in one PRB.
  • the scaling factor, 2/n_comb is imported to eliminate the impact of different frequency density for SRS pattern since the value of comb is assumed 2 for power control scheme in LTE.
  • Fig. 3 illustrates one example of the impact of frequency density on SRS transmission power.
  • SRS transmission power of configuration 1, e.g. comb 2 is 2 times that of configuration 2 and 3, e.g., comb 4.
  • the power control formula is modified as follows:
  • P SRS, c (i) min ⁇ P CMAX, c (i) , P SRS_OFFSET, c (m) + 10 log 10 (M SRS, c ⁇ 2 /n_comb) + P O_PUSCH, c (j) + ⁇ c (j) ⁇ PL c + f c (i) ⁇
  • P CMAX, c (i) is the configured maximal allowed transmit power for a specific cell c
  • M SRS, c (i) is the uplink physical resource block (PRB) number for SRS transmission
  • P O_PUSCH, c (j) is the semi-static nominal power for PUSCH
  • PL c is downlink pathloss estimated in the UE for serving cell c in dB
  • ⁇ c (j) is a cell specific pathloss compensation factor to achieve balance between cell average and cell edge throughput
  • f c (i) is the PUSCH close loop power adjustment part for serving cell c
  • P SRS_OFFSET, c (m) is the offset value for power adjustment relative to PUSCH power control, which is semi-statically configured by higher layers
  • n_comb is the number comb (for example, this value is 2 for LTE systems but may have more possible values in 5G NR) .
  • DFT-S-OFDM discrete fourier transform spread
  • PAPR peak to average power ratio
  • SRS will be dropped if it is transmitted simultaneously with PUSCH/PUCCH at the last OFDM symbol.
  • CP cyclic prefix
  • DFT-S-OFDM based waveforms are mandatory for UEs. It is agreed that the common framework is used to design RS for both CP-OFDM and DFT-S-OFDM based waveforms. Therefore, SRS may be simultaneously transmitted with PUSCH/PUCCH in one OFDM symbol. When transmission power for a UE exceeds the maximum power, the power scaling is used.
  • SRS with CSI acquisition it has lower priority relative to PUCCH/PUSCH because it is just used for obtaining uplink or downlink CSI for data transmission in later subframes.
  • Type 0 and 1 SRS are defined in LTE specification for periodic and aperiodic SRS, respectively.
  • a new function of beam management SRS is being introduced.
  • SRS may be transmitted from a UE with multiple [analogue] beams where each beam is configured with difference resource in frequency domain or time domain.
  • SRS for beam management will be triggered to transmit when the link quality with selected beam pair is not good, e.g., in case of beam recovery/reselection.
  • beam management SRS may be transmitted with PUSCH/PUCCH/other SRS in one OFDM symbol in some special cases, such as: 1) UE initialized SRS transmission for beam management; 2) Semi-persistent scheduling for PUSCH; 3) High layer configured periodic SRS; 4) PUCCH transmission with fixed time relation with PUSCH. If scaling is used for beam management SRS in case of simultaneous transmission with other uplink channel and/or signal, it will have impact on the beam recovery/reselection results. This is not desirable from the view of later PUSCH/PUCCH transmission. Therefore, according to an embodiment, higher priority is placed on beam management SRS transmission and its transmission power is guaranteed.
  • Fig. 4 illustrates an example of the high priority for beam management SRS, according to an embodiment.
  • the priority on transmit power allocation may be applied according to: Beam management SRS > PUCCH > PUSCH > Type 1/0 SRS.
  • the same transmit (Tx) power may be configured for each of SRS beams even when only part of the SRS beam (s) is simultaneous transmitted with PUCCH/PUSCH, etc.
  • multiple SRS resources can be configured with different beamforming/precoding, even with different numerology.
  • the power scaling scheme described herein may be used.
  • type 1 SRS e.g., aperiodic SRS
  • type 0 e.g., periodic SRS
  • transmit power for type 1 SRS can be guaranteed when it is transmitted simultaneously with type 0 SRS.
  • Fig. 5 illustrates a diagram depicting an example of high priority by better link quality and transmitting on primary sounding resource, according to an embodiment.
  • RSRP reference signal received power
  • SRS on the linked beam pair with larger RSRP can be guaranteed with high priority for the transmit power. This is depicted as case 1 in Fig. 5.Since a UE will report RSRP of the linked beam pair to the gNB, there is a common understanding between UE and gNB on the priority for guaranteeing SRS transmit power. For SRS simultaneously transmitted with the same beam pair, the equal power scaling factor may be used because of the same link quality.
  • the gNB may have the capability to control the priority on guaranteeing transmit power in case of SRS power scaling. Signalling may be needed to indicate the priority for power allocation of multiple SRS.
  • one SRS resource can be configured by the gNB as primary sounding resource. On this primary resource, the SRS transmit power is guaranteed to the best. This is depicted as case 2 in Fig. 5.
  • the gNB may indicate the muted sounding resource with high priority. Better channel estimate quality can be guaranteed for other sounding links by muting SRS on this configured sounding resource with high muting priority.
  • certain embodiments of the present disclosure are directed to introducing comb value into SRS power control scheme as scaling factor; placing high priority on guaranteeing transmit power for beam management SRS relative to PUCCH/PUSCH/type 1/0 SRS in case of power scaling; in case of multiple same type SRS transmission in the same OFDM symbol, guaranteeing SRS transmit power with high priority on the beam pair with larger RSRP, guaranteeing SRS transmit power with high priority on primary sounding resource configured by gNB, and muting SRS on the configured sounding resource with high muting priority to guarantee channel estimation quality of other links; and when the power scaling for SRS is necessary, the same Tx power will be configured for each of SRS beams even when only part of the SRS beam (s) is simultaneous transmitted with PUCCH/PUSCH, etc.
  • Fig. 6 illustrates an example of a signaling diagram, according to one embodiment.
  • a gNB sends SRS transmission parameters and related signalling for SRS power control.
  • a UE performs RSRP measurement and sets transmit power according to the gNB’s indication. If the UE transmits SRS simultaneously with other channel/signal and the UE’s total transmit power exceeds maximum transmit power, P CMAX, c , the power scaling scheme may be used according to a pre-defined priority. More specifically, as illustrated in Fig. 6, at 1, the gNB transmits SRS transmission parameters that may include comb value, SRS pattern, etc.
  • the gNB may also send reference signal (s) , such as a beam reference signal (BRS) or Channel State Information Reference Signal (CSI-RS) , for UE pathloss measurement.
  • s such as a beam reference signal (BRS) or Channel State Information Reference Signal (CSI-RS)
  • the UE at 3, performs RSRP measurement based on the received reference signal (e.g., BRS or CSI-RS) and obtains the RSRP and pathloss.
  • the gNB may determine SRS power control parameter sets for configured SRS resources, including P0, ⁇ , fc, and offset value relative to linked PUSCH, and sends these parameters to the UE, for example, via high layer and/or physical signaling.
  • the UE may determine the transmit power for each SRS resource based on the gNb’s signalling, pathloss measurement results, and the SRS transmission parameter, e.g. comb, according to the following formula (Formula 1) :
  • P SRS, c (i) min ⁇ P CMAX, c (i) , P SRS_OFFSET, c (m) + 10 log 10 (M SRS, c ⁇ 2 /n_comb) + P O_PUSCH, c (j) + ⁇ c (j) ⁇ PL c + f c (i) ⁇
  • P CMAX, c (i) is the configured maximal allowed transmit power for a specific cell c
  • M SRS, c (i) is the uplink physical resource block (PRB) number for SRS transmission
  • P O_PUSCH, c (j) is the semi-static nominal power for PUSCH
  • PL c is downlink pathloss estimated in the UE for serving cell c in dB
  • ⁇ c (j) is a cell specific pathloss compensation factor to achieve balance between cell average and cell edge throughput
  • f c (i) is the PUSCH close loop power adjustment part for serving cell c
  • P SRS_OFFSET, c (m) is the offset value for power adjustment relative to PUSCH power control, which is semi-statically configured by higher layers
  • n_comb is the number comb (for example, this value is 2 for LTE systems but may have more possible values in 5G NR) .
  • power scaling may be used according to a pre-defined priority as follows:
  • SRS is beam management SRS and it is transmitted simultaneously with PUCCH/PUSCH/type 1/0 SRS, keep the SRS transmit power determined at step 5 and/or the same Tx power may be configured for each of SRS beams even when only part of the SRS beam (s) is simultaneously transmitted with PUCCH/PUSCH, etc. ;
  • SRS is not beam management SRS and it is transmitted simultaneously with PUCCH/PUSCH, SRS is transmitted with remaining power except for PUCCH/PUSCH transmit power;
  • type 1 SRS is transmitted simultaneously with type 0 SRS, type 1 SRS is transmitted with power determined at step 5 and type 0 SRS is transmitted with remaining power;
  • the SRS with this beam pair is transmitted with power determined at step 5.
  • the SRS with this beam pair is transmitted with remaining power;
  • Fig. 7a illustrates an example of an apparatus 10 according to an embodiment.
  • apparatus 10 may be a node, host, or server in a communications network or serving such a network.
  • apparatus 10 may be a base station, a node B, an evolved node B, 5G node B or access point, next generation node B (NG-NB) , gNB, WLAN access point, mobility management entity (MME) , or subscription server associated with a radio access network, such as a GSM network, LTE network or 5G radio access technology.
  • NG-NB next generation node B
  • MME mobility management entity
  • apparatus 10 may include components or features not shown in Fig. 7a.
  • apparatus 10 may include a processor 12 for processing information and executing instructions or operations.
  • processor 12 may be any type of general or specific purpose processor. While a single processor 12 is shown in Fig. 7a, multiple processors may be utilized according to other embodiments. In fact, processor 12 may include one or more of general-purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) , field-programmable gate arrays (FPGAs) , application-specific integrated circuits (ASICs) , and processors based on a multi-core processor architecture, as examples.
  • DSPs digital signal processors
  • FPGAs field-programmable gate arrays
  • ASICs application-specific integrated circuits
  • Processor 12 may perform functions associated with the operation of apparatus 10 which may include, for example, precoding of antenna gain/phase parameters, encoding and decoding of individual bits forming a communication message, formatting of information, and overall control of the apparatus 10, including processes related to management of communication resources.
  • Apparatus 10 may further include or be coupled to a memory 14 (internal or external) , which may be coupled to processor 12, for storing information and instructions that may be executed by processor 12.
  • Memory 14 may be one or more memories and of any type suitable to the local application environment, and may be implemented using any suitable volatile or nonvolatile data storage technology such as a semiconductor-based memory device, a magnetic memory device and system, an optical memory device and system, fixed memory, and removable memory.
  • memory 14 can be comprised of any combination of random access memory (RAM) , read only memory (ROM) , static storage such as a magnetic or optical disk, hard disk drive (HDD) , or any other type of non-transitory machine or computer readable media.
  • the instructions stored in memory 14 may include program instructions or computer program code that, when executed by processor 12, enable the apparatus 10 to perform tasks as described herein.
  • apparatus 10 may also include or be coupled to one or more antennas 15 for transmitting and receiving signals and/or data to and from apparatus 10.
  • Apparatus 10 may further include or be coupled to a transceiver 18 configured to transmit and receive information.
  • the transceiver 18 may include, for example, a plurality of radio interfaces that may be coupled to the antenna (s) 15.
  • the radio interfaces may correspond to a plurality of radio access technologies including one or more of GSM, NB-IoT, LTE, 5G, WLAN, Bluetooth, BT-LE, NFC, radio frequency identifier (RFID) , ultrawideband (UWB) , and the like.
  • the radio interface may include components, such as filters, converters (for example, digital-to-analog converters and the like) , mappers, a Fast Fourier Transform (FFT) module, and the like, to generate symbols for a transmission via one or more downlinks and to receive symbols (for example, via an uplink) .
  • transceiver 18 may be configured to modulate information on to a carrier waveform for transmission by the antenna (s) 15 and demodulate information received via the antenna (s) 15 for further processing by other elements of apparatus 10.
  • transceiver 18 may be capable of transmitting and receiving signals or data directly.
  • memory 14 may store software modules that provide functionality when executed by processor 12.
  • the modules may include, for example, an operating system that provides operating system functionality for apparatus 10.
  • the memory may also store one or more functional modules, such as an application or program, to provide additional functionality for apparatus 10.
  • the components of apparatus 10 may be implemented in hardware, or as any suitable combination of hardware and software.
  • apparatus 10 may be a network node or server, such as a base station, node B, eNB, 5G node B or access point (AP) , gNB, WLAN AP, or next generation node B (NG-NB) , for example.
  • apparatus 10 may be controlled by memory 14 and processor 12 to perform the functions associated with embodiments described herein.
  • apparatus 10 may be controlled by memory 14 and processor 12 to transmit SRS transmission parameters and/or a reference signal (e.g., BRS) for user equipment pathloss measurement.
  • the SRS transmission parameters may include a comb value and/or SRS pattern.
  • the reference signal for user equipment pathloss measurement may include a beam reference signal (BRS) .
  • BRS beam reference signal
  • apparatus 10 may be further controlled by memory 14 and processor 12 to determine SRS power control parameter sets for configured SRS resources, and to transmit the determined SRS power control parameter sets to one or more UEs.
  • the comb value transmitted as a part of the SRS transmission parameters may be used as a scaling factor to perform the SRS power scaling.
  • the SRS power control parameter sets may include P0, ⁇ , fc, and/or offset value relative to linked PUSCH.
  • apparatus 10 may be controlled by memory 14 and processor 12 to transmit the determined SRS power control parameter sets to the UE (s) by higher layer and/or physical signaling.
  • apparatus 10 when the SRS is beam management SRS, apparatus 10 may be controlled by memory 14 and processor 12 to guarantee the transmit power of the SRS. According to an embodiment, when SRS power scaling becomes necessary, apparatus 10 may be controlled by memory 14 and processor 12 to configure a same transmit power for each SRS beam even when only a part of the SRS beams are transmitted simultaneously with PUCCH/PUSCH. In certain embodiments, when multiple SRSs are transmitted in one orthogonal frequency division multiplexing (OFDM) symbol, apparatus 10 may be controlled by memory 14 and processor 12 to guarantee a high priority of transmit power for the one of the multiple SRSs that has a largest RSRP.
  • OFDM orthogonal frequency division multiplexing
  • apparatus 10 may be further controlled by memory 14 and processor 12 to configure one or more of the SRS resources as a primary sounding resource to guarantee transmit power for SRS power scaling.
  • apparatus 10 may be controlled by memory 14 and processor 12 to mute SRS on at least one of the configured SRS resources with high muting priority in order to guarantee channel estimation quality of other links.
  • apparatus 20 may be a node or element in a communications network or associated with such a network, such as a UE, mobile equipment (ME) , mobile station, mobile device, stationary device, IoT device, or other device.
  • UE may alternatively be referred to as, for example, a mobile station, mobile equipment, mobile unit, mobile device, user device, subscriber station, wireless terminal, tablet, smart phone, IoT device or NB-IoT device, or the like.
  • Apparatus 20 may be implemented in, for instance, a wireless handheld device, a wireless plug-in accessory, or the like.
  • apparatus 20 may include one or more processors, one or more computer-readable storage medium (for example, memory, storage, and the like) , one or more radio access components (for example, a modem, a transceiver, and the like) , and/or a user interface.
  • apparatus 20 may be configured to operate using one or more radio access technologies, such as GSM, NB-IoT, LTE, LTE-A, 5G, WLAN, WiFi, Bluetooth, NFC, and any other radio access technologies. It should be noted that one of ordinary skill in the art would understand that apparatus 20 may include components or features not shown in Fig. 7b.
  • apparatus 20 may include or be coupled to a processor 22 for processing information and executing instructions or operations.
  • processor 22 may be any type of general or specific purpose processor. While a single processor 22 is shown in Fig. 7b, multiple processors may be utilized according to other embodiments. In fact, processor 22 may include one or more of general-purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) , field-programmable gate arrays (FPGAs) , application-specific integrated circuits (ASICs) , and processors based on a multi-core processor architecture, as examples.
  • DSPs digital signal processors
  • FPGAs field-programmable gate arrays
  • ASICs application-specific integrated circuits
  • Processor 22 may perform functions associated with the operation of apparatus 20 including, without limitation, precoding of antenna gain/phase parameters, encoding and decoding of individual bits forming a communication message, formatting of information, and overall control of the apparatus 20, including processes related to management of communication resources.
  • Apparatus 20 may further include or be coupled to a memory 24 (internal or external) , which may be coupled to processor 22, for storing information and instructions that may be executed by processor 22.
  • Memory 24 may be one or more memories and of any type suitable to the local application environment, and may be implemented using any suitable volatile or nonvolatile data storage technology such as a semiconductor-based memory device, a magnetic memory device and system, an optical memory device and system, fixed memory, and removable memory.
  • memory 24 can be comprised of any combination of random access memory (RAM) , read only memory (ROM) , static storage such as a magnetic or optical disk, or any other type of non-transitory machine or computer readable media.
  • the instructions stored in memory 24 may include program instructions or computer program code that, when executed by processor 22, enable the apparatus 20 to perform tasks as described herein.
  • apparatus 20 may also include or be coupled to one or more antennas 25 for receiving a downlink signal and for transmitting via an uplink from apparatus 20.
  • Apparatus 20 may further include a transceiver 28 configured to transmit and receive information.
  • the transceiver 28 may also include a radio interface (e.g., a modem) coupled to the antenna 25.
  • the radio interface may correspond to a plurality of radio access technologies including one or more of GSM, NB-IoT, LTE, LTE-A, 5G, WLAN, Bluetooth, BT-LE, NFC, RFID, UWB, and the like.
  • the radio interface may include other components, such as filters, converters (for example, digital-to-analog converters and the like) , symbol demappers, signal shaping components, an Inverse Fast Fourier Transform (IFFT) module, and the like, to process symbols, such as OFDMA symbols, carried by a downlink or an uplink.
  • filters for example, digital-to-analog converters and the like
  • symbol demappers for example, digital-to-analog converters and the like
  • signal shaping components for example, an Inverse Fast Fourier Transform (IFFT) module, and the like
  • IFFT Inverse Fast Fourier Transform
  • transceiver 28 may be configured to modulate information on to a carrier waveform for transmission by the antenna (s) 25 and demodulate information received via the antenna (s) 25 for further processing by other elements of apparatus 20.
  • transceiver 28 may be capable of transmitting and receiving signals or data directly.
  • Apparatus 20 may further include a user interface, such as a graphical user interface or touchscreen.
  • memory 24 stores software modules that provide functionality when executed by processor 22.
  • the modules may include, for example, an operating system that provides operating system functionality for apparatus 20.
  • the memory may also store one or more functional modules, such as an application or program, to provide additional functionality for apparatus 20.
  • the components of apparatus 20 may be implemented in hardware, or as any suitable combination of hardware and software.
  • apparatus 20 may be a UE, mobile device, mobile station, ME, IoT device and/or NB-IoT device, for example.
  • apparatus 20 may be controlled by memory 24 and processor 22 to perform the functions associated with embodiments described herein.
  • apparatus 20 may be controlled by memory 24 and processor 22 to receive SRS transmission parameters and/or reference signal (s) for pathloss measurement.
  • the SRS transmission parameters may include, for example, a comb value and/or SRS pattern.
  • apparatus 20 may be further controlled by memory 24 and processor 22 to perform RSRP measurement based on the received reference signal (s) and obtain the RSRP and the pathloss measurement.
  • apparatus 20 may also be controlled by memory 24 and processor 22 to receive SRS power control parameters for configured SRS resources, and to determine transmit power for each of the SRS resources based on the pathloss measurement and the SRS power control parameters. According to an embodiment, apparatus 20 may be further controlled by memory 24 and processor 22 to use the comb value received as part of the SRS transmission parameters as a scaling factor for SRS power scaling.
  • apparatus 20 may be controlled by memory 24 and processor 22 to determine the transmit power for each of the SRS resources based on the pathloss measurement and the SRS power control parameters according to the following formula (Formula 1) :
  • P SRS, c (i) min ⁇ P CMAX, c (i) , P SRS_OFFSET, c (m) + 10 log 10 (M SRS, c ⁇ 2 /n_comb) + P O_PUSCH, c (j) + ⁇ c (j) ⁇ PL c + f c (i) ⁇
  • apparatus 20 when SRS are transmitted with other uplink channel (s) or signals and the transmission power of apparatus 20 exceeds a maximum transmission power, apparatus 20 may be controlled by memory 24 and processor 22 to use power scaling according to a pre-defined priority.
  • the pre-defined priority may include: when SRS is a beam management SRS, apparatus 20 may be controlled to transmit the SRS with high priority to guarantee its transmit power and the same transmit power is configured for each SRS beam even when only part of the SRS beam (s) is simultaneously transmitted with PUCCH/PUSCH if power scaling is used; when SRS is transmitted simultaneously with physical uplink control channel (PUCCH) /physical uplink shared channel (PUSCH) , SRS may be transmitted with remaining power except for PUCCH/PUSCH transmit power; when type 1 SRS is transmitted simultaneously with type 0 SRS, type 1 SRS may be transmitted with high priority to guarantee its transmit power and type 0 SRS is transmitted with the remaining power; when SRS is transmitted simultaneously with other same type sounding reference signal (SRS)
  • SRS SRS
  • Fig. 8a illustrates an example flow diagram of a method according to one embodiment.
  • the method of Fig. 8a may be performed by a network node, such as a base station, node B, eNB, 5G node B or access point (AP) , gNB, WLAN AP, or next generation node B (NG-NB) , for example.
  • the method may include, at 800, transmitting SRS transmission parameters and/or a reference signal for UE pathloss measurement.
  • the SRS transmission parameters may include a comb value and/or SRS pattern.
  • the reference signal for the user equipment pathloss measurement may include a beam reference signal (BRS) .
  • BRS beam reference signal
  • the method may also include, at 810, determining SRS power control parameter sets for configured SRS resources, and, at 820, transmitting the determined SRS power control parameter sets to one or more UEs.
  • the SRS power control parameter sets may include P0, ⁇ , fc, and/or offset value relative to linked PUSCH.
  • the determined SRS power control parameter sets may be transmitted to the UE (s) by higher layer and/or physical signaling.
  • Fig. 8b illustrates an example flow diagram of a method according to one embodiment.
  • the method of Fig. 8b may be performed by a device, such as UE, mobile device, mobile station, mobile equipment, smartphone, and/or IoT device, for example.
  • the method may include, at 850, receiving SRS transmission parameters and/or reference signal (s) for pathloss measurement.
  • the SRS transmission parameters may include, for example, a comb value and/or SRS pattern.
  • the method may also include, at 860, performing RSRP measurement based on the received reference signal (s) and obtaining the RSRP and the pathloss measurement.
  • the method may further include, at 870, receiving SRS power control parameters for configured SRS resources, and, at 880, determining the transmit power for each of the SRS resources based on the pathloss measurement and the SRS power control parameters.
  • the transmit power for each of the SRS resources based on the pathloss measurement and the SRS power control parameters may be determined according to the following formula (Formula 1) :
  • P SRS, c (i) min ⁇ P CMAX, c (i) , P SRS_OFFSET, c (m) + 10 log 10 (M SRS, c ⁇ 2 /n_comb) + P O_PUSCH, c (j) + ⁇ c (j) ⁇ PL c + f c (i) ⁇
  • the method may include using power scaling according to a pre-defined priority as outlined above.
  • embodiments of the invention provide several technical improvements and/or advantages. For example, certain embodiments are able to provide accurate power control for SRS with different transmission patters, such as different frequency density. In addition, certain embodiments are able to guarantee the reliability and accuracy for beam recover/reselection, to provide good channel estimation quality for the link with better channel quality, and to provide good channel estimation quality for the link with high priority according to a gNB’s requirement. As such, embodiments of the invention can improve performance and throughput of network nodes including, for example, base stations/eNBs and UEs. Accordingly, the use of embodiments of the invention result in improved functioning of communications networks and their nodes.
  • any of the methods, processes, signaling diagrams, or flow charts described herein may be implemented by software and/or computer program code or portions of code stored in memory or other computer readable or tangible media, and executed by a processor.
  • an apparatus may be included or be associated with at least one software application, module, unit or entity configured as arithmetic operation (s) , or as a program or portions of it (including an added or updated software routine) , executed by at least one operation processor.
  • Programs also called program products or computer programs, including software routines, applets and macros, may be stored in any apparatus-readable data storage medium and include program instructions to perform particular tasks.
  • a computer program product may comprise one or more computer-executable components which, when the program is run, are configured to carry out embodiments.
  • the one or more computer-executable components may be at least one software code or portions of it. Modifications and configurations required for implementing functionality of an embodiment may be performed as routine (s) , which may be implemented as added or updated software routine (s) .
  • Software routine (s) may be downloaded into the apparatus.
  • Software or a computer program code or portions of it may be in a source code form, object code form, or in some intermediate form, and it may be stored in some sort of carrier, distribution medium, or computer readable medium, which may be any entity or device capable of carrying the program.
  • carrier include a record medium, computer memory, read-only memory, photoelectrical and/or electrical carrier signal, telecommunications signal, and software distribution package, for example.
  • the computer program may be executed in a single electronic digital computer or it may be distributed amongst a number of computers.
  • the computer readable medium or computer readable storage medium may be a non-transitory medium.
  • the functionality may be performed by hardware, for example through the use of an application specific integrated circuit (ASIC) , a programmable gate array (PGA) , a field programmable gate array (FPGA) , or any other combination of hardware and software.
  • ASIC application specific integrated circuit
  • PGA programmable gate array
  • FPGA field programmable gate array
  • the functionality may be implemented as a signal, a non-tangible means that can be carried by an electromagnetic signal downloaded from the Internet or other network.
  • an apparatus such as a node, device, or a corresponding component, may be configured as a computer or a microprocessor, such as single-chip computer element, or as a chipset, including at least a memory for providing storage capacity used for arithmetic operation and an operation processor for executing the arithmetic operation.
  • a microprocessor such as single-chip computer element, or as a chipset, including at least a memory for providing storage capacity used for arithmetic operation and an operation processor for executing the arithmetic operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne des systèmes, des procédés, des appareils et des produits-programmes informatiques permettant une mise à l'échelle de puissance de signal de référence de sondage (SRS), par exemple, dans des nouveaux systèmes radio de 5ème génération (5G NR). Un procédé consiste à transmettre, par un nœud de réseau, au moins un paramètre parmi des paramètres de transmission de SRS et un signal de référence permettant une mesure d'affaiblissement de propagation d'équipement utilisateur. Les paramètres de transmission de SRS peuvent comprendre une valeur de peigne et/ou un motif de SRS. Le procédé peut également consister à déterminer des ensembles de paramètres de commande de puissance de SRS pour des ressources de SRS configurées, et à transmettre les ensembles de paramètres de commande de puissance de SRS déterminés à un ou plusieurs équipements utilisateur. La valeur de peigne peut être utilisée en tant que facteur de mise à l'échelle permettant la mise à l'échelle de puissance de SRS.
PCT/CN2017/070144 2017-01-04 2017-01-04 Procédé de mise à l'échelle de puissance de signal de référence de sondage (srs) WO2018126356A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/070144 WO2018126356A1 (fr) 2017-01-04 2017-01-04 Procédé de mise à l'échelle de puissance de signal de référence de sondage (srs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/070144 WO2018126356A1 (fr) 2017-01-04 2017-01-04 Procédé de mise à l'échelle de puissance de signal de référence de sondage (srs)

Publications (1)

Publication Number Publication Date
WO2018126356A1 true WO2018126356A1 (fr) 2018-07-12

Family

ID=62788857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/070144 WO2018126356A1 (fr) 2017-01-04 2017-01-04 Procédé de mise à l'échelle de puissance de signal de référence de sondage (srs)

Country Status (1)

Country Link
WO (1) WO2018126356A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110858998A (zh) * 2018-08-23 2020-03-03 维沃移动通信有限公司 上行信号传输处理方法和终端设备
CN110858999A (zh) * 2018-08-23 2020-03-03 维沃移动通信有限公司 探测参考信号srs功率控制方法、终端及网络设备
WO2020167052A1 (fr) 2019-02-15 2020-08-20 Samsung Electronics Co., Ltd. Procédé et appareil pour fournir un signal de référence de positionnement
US20200374809A1 (en) * 2017-09-07 2020-11-26 Ofinno, Llc Transmission Power Adjustment for a Transmission of Sounding Reference Signals
US11082183B2 (en) 2019-09-16 2021-08-03 Qualcomm Incorporated Comb shift design
CN113489557A (zh) * 2019-02-03 2021-10-08 Oppo广东移动通信有限公司 干扰或信号接收功率测量的方法和设备
US11239967B2 (en) 2019-05-02 2022-02-01 Qualcomm Incorporated Patterns for reference signals used for positioning in a wireless communications system
CN114287148A (zh) * 2019-06-21 2022-04-05 株式会社Ntt都科摩 终端以及无线通信方法
CN114616763A (zh) * 2019-08-21 2022-06-10 诺基亚通信公司 装置、方法和计算机程序
US11496990B2 (en) 2017-07-31 2022-11-08 Qualcomm Incorporated Systems and methods to facilitate location determination by beamforming of a positioning reference signal
US11777764B2 (en) 2019-03-28 2023-10-03 Qualcomm Incorporated Sounding reference signal waveform design for wireless communications

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102427608A (zh) * 2011-12-06 2012-04-25 电信科学技术研究院 一种发送srs和指示srs发送的方法及设备
CN103096449A (zh) * 2011-11-04 2013-05-08 中兴通讯股份有限公司 一种探测参考信号的功率控制方法、系统及装置
CN103312484A (zh) * 2012-03-16 2013-09-18 中兴通讯股份有限公司 探测参考信号发射功率的控制方法、用户设备和基站
US20140119321A1 (en) * 2011-07-15 2014-05-01 Fujitsu Limited Sounding reference symbol sending method, base station, and user equipment
US20160219534A1 (en) * 2013-09-27 2016-07-28 Zte Corporation Method and System for Configuring a Sounding Reference Signal Power Control Parameter in a Time-Division Duplexing System

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140119321A1 (en) * 2011-07-15 2014-05-01 Fujitsu Limited Sounding reference symbol sending method, base station, and user equipment
CN103096449A (zh) * 2011-11-04 2013-05-08 中兴通讯股份有限公司 一种探测参考信号的功率控制方法、系统及装置
CN102427608A (zh) * 2011-12-06 2012-04-25 电信科学技术研究院 一种发送srs和指示srs发送的方法及设备
CN103312484A (zh) * 2012-03-16 2013-09-18 中兴通讯股份有限公司 探测参考信号发射功率的控制方法、用户设备和基站
US20160219534A1 (en) * 2013-09-27 2016-07-28 Zte Corporation Method and System for Configuring a Sounding Reference Signal Power Control Parameter in a Time-Division Duplexing System

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FUJITSU: "Discussion on SRS Power Control .", 3GPP TSG RAN WGI MEETING #70, R1-123302., 17 August 2012 (2012-08-17), XP050661190 *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11496990B2 (en) 2017-07-31 2022-11-08 Qualcomm Incorporated Systems and methods to facilitate location determination by beamforming of a positioning reference signal
US11589316B2 (en) * 2017-09-07 2023-02-21 Beijing Xiaomi Mobile Software Co., Ltd. Transmission power adjustment for a transmission of sounding reference signals
US20200374809A1 (en) * 2017-09-07 2020-11-26 Ofinno, Llc Transmission Power Adjustment for a Transmission of Sounding Reference Signals
CN110858999B (zh) * 2018-08-23 2023-03-28 维沃移动通信有限公司 探测参考信号srs功率控制方法、终端及网络设备
CN110858999A (zh) * 2018-08-23 2020-03-03 维沃移动通信有限公司 探测参考信号srs功率控制方法、终端及网络设备
CN110858998A (zh) * 2018-08-23 2020-03-03 维沃移动通信有限公司 上行信号传输处理方法和终端设备
CN113489557A (zh) * 2019-02-03 2021-10-08 Oppo广东移动通信有限公司 干扰或信号接收功率测量的方法和设备
CN113489557B (zh) * 2019-02-03 2023-04-18 Oppo广东移动通信有限公司 干扰或信号接收功率测量的方法和设备
US11910220B2 (en) 2019-02-03 2024-02-20 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method and device for measuring interference or signal received power
GB2581772B (en) * 2019-02-15 2021-08-04 Samsung Electronics Co Ltd Positioning reference signal
EP3878131A4 (fr) * 2019-02-15 2022-05-25 Samsung Electronics Co., Ltd. Procédé et appareil pour fournir un signal de référence de positionnement
WO2020167052A1 (fr) 2019-02-15 2020-08-20 Samsung Electronics Co., Ltd. Procédé et appareil pour fournir un signal de référence de positionnement
US11777764B2 (en) 2019-03-28 2023-10-03 Qualcomm Incorporated Sounding reference signal waveform design for wireless communications
US11239967B2 (en) 2019-05-02 2022-02-01 Qualcomm Incorporated Patterns for reference signals used for positioning in a wireless communications system
CN114287148A (zh) * 2019-06-21 2022-04-05 株式会社Ntt都科摩 终端以及无线通信方法
CN114287148B (zh) * 2019-06-21 2024-04-23 株式会社Ntt都科摩 终端、无线通信方法、基站以及系统
CN114616763A (zh) * 2019-08-21 2022-06-10 诺基亚通信公司 装置、方法和计算机程序
US11496265B2 (en) 2019-09-16 2022-11-08 Qualcomm Incorporated Comb shift design
US11082183B2 (en) 2019-09-16 2021-08-03 Qualcomm Incorporated Comb shift design

Similar Documents

Publication Publication Date Title
WO2018126356A1 (fr) Procédé de mise à l'échelle de puissance de signal de référence de sondage (srs)
USRE49032E1 (en) Methods and apparatuses for physical resource block bundling size configuration
CN110637495B (zh) 无线通信系统中通过波束发送和接收信号的方法及用于该方法的装置
US11082864B2 (en) Method for transmitting and receiving signal by means of beam in wireless communication system, and apparatus for said method
CN108781152B (zh) 用于在通信系统中发射探测参考信号的装置和方法
CN111919398B (zh) 用于测量的参考信号的方法和装置
US11979213B2 (en) Methods and apparatuses for channel state information configuration and reporting for multi-transmission reception point operation
KR102327480B1 (ko) 기지국 장치, 단말 장치 및 통신 방법
CN110754043B (zh) 用于新无线电的频率选择性上行链路预编码
US20200366351A1 (en) Methods and apparatuses for time and frequency tracking reference signal use in new radio
US20240031855A1 (en) Method and apparatus for inter-cell downlink and uplink beam indication, measurement and reporting
US20200304259A1 (en) Methods and apparatuses for phase tracking reference signal design
CN110679189B (zh) 在无线通信系统中接收下行链路信道的方法及其装置
US11252674B2 (en) Methods and apparatuses for multi-panel power control
US11128419B2 (en) Reference signal reception method and user equipment, and reference signal transmission method and base station
KR102507510B1 (ko) 신호 전송 방법 및 기기
US11218891B2 (en) Enhanced radio link monitoring for user equipment
JP2019145867A (ja) 基地局装置、端末装置および通信方法
WO2019071383A1 (fr) Procédés et appareils pour l'omission de domaine de fréquence d'un rapport d'informations d'état de canal de sous-bande
US20230036639A1 (en) Supporting a narrow serving beam in a hierarchical beam configuration
US10581495B2 (en) Physical layer configuration continuity during radio resource control restoration
WO2018083375A1 (fr) Procédés et appareils pour configurer des motifs de signal de référence de démodulation de liaison descendante flexible pour un intervalle de temps de transmission plus court
US11336336B2 (en) Methods and apparatuses for dynamic transmit diversity fallback
WO2023102892A1 (fr) Déduction de coefficients d'éléments inactifs de surfaces intelligentes reconfigurables (ris) à l'aide de fonctions de mise en correspondance
WO2021160331A1 (fr) Table de schéma de modulation et de codage vers des associations d'ensembles de ressources pour une opération de point multi-transmission/réception

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17889864

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17889864

Country of ref document: EP

Kind code of ref document: A1