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NZ762336B2 - User terminal and radio communication method - Google Patents

User terminal and radio communication method Download PDF

Info

Publication number
NZ762336B2
NZ762336B2 NZ762336A NZ76233617A NZ762336B2 NZ 762336 B2 NZ762336 B2 NZ 762336B2 NZ 762336 A NZ762336 A NZ 762336A NZ 76233617 A NZ76233617 A NZ 76233617A NZ 762336 B2 NZ762336 B2 NZ 762336B2
Authority
NZ
New Zealand
Prior art keywords
received power
synchronization signal
resource
terminal according
block index
Prior art date
Application number
NZ762336A
Other versions
NZ762336A (en
Inventor
Hiroki Harada
Liu Liu
Satoshi Nagata
Jing Wang
Original Assignee
Ntt Docomo Inc
Filing date
Publication date
Application filed by Ntt Docomo Inc filed Critical Ntt Docomo Inc
Priority claimed from PCT/JP2017/029221 external-priority patent/WO2019030927A1/en
Publication of NZ762336A publication Critical patent/NZ762336A/en
Publication of NZ762336B2 publication Critical patent/NZ762336B2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2666—Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Abstract

order to suitably measure reception quality, this user terminal is characterized by being provided with a receiving unit which receives a prescribed signal in one or more synchronization signal blocks, and a measurement unit which measures a first received power of the prescribed signal, and a second received power in radio resources associated with the aforementioned one or more synchronization signal blocks, wherein the measurement unit derives reception quality of a cell on the basis of the first received power and the second received power.

Claims (11)

1. A terminal comprising: a receiving section configured to measure a first received power in a first resource of a synchronization signal per synchronization signal block index in a cell, and measure a second received power in a second resource; and a control section configured to derive a measurement result based on a ratio of the first received power to the second received power per the synchronization signal block index, wherein the control section is configured, by Radio Resource Control (RRC) signaling, with a periodicity, an offset and a time duration of the second resource.
2. The terminal according to claim 1, wherein the synchronization signal block index is associated with a measured beam.
3. The terminal according to claim 1 or 2, wherein the control section is configured to derive a plurality of measurement results by deriving the measurement result per the synchronization signal block index, and is configured to derive a result of measurement for the cell as an average of upper values exceeding a threshold value out of the plurality of the measurement results, wherein a number of values used in the average does not exceed a specified number.
4. The terminal according to any one of claims 1 through 3, wherein the control section is configured to report at least one of the first received power and the measurement result.
5. The terminal according to any one of claims 1 through 4, wherein the measurement of the first received power and the measurement of the second received power are based on a received beam..
6. The terminal according to any one of claims 1 through 4, wherein the receiving section is configured to measure the second received power per the synchronization signal block index.
7. The terminal according to any one of claims 1 through 4, wherein the control section is configured to derive the measurement result by dividing N times the first received power by the second received power, wherein N is a number of resource blocks in a measurement bandwidth of the second received power.
8. The terminal according to any one of claims 1 through 4, wherein a bandwidth of the second resource is equal to a bandwidth of the first resource, the control section is configured to derive the measurement result by dividing the first received power by the second received power, and the measurement result is a signal-to-noise and interference ratio.
9. A radio communication method for a terminal comprising: measuring a first received power in a first resource of a synchronization signal per synchronization signal block index in a cell, and measuring a second received power in a second resource; and deriving a measurement result based on a ratio of the first received power to the second received power per the synchronization signal block index, wherein the terminal is configured, by Radio Resource Control (RRC) signaling, with a periodicity, an offset and a time duration of the second resource.
10. A system comprising the terminal according to any one of claims 1 through 8 and a base station configured to transmit the synchronization signal per synchronization signal block index in the ce
11. ll.
NZ762336A 2017-08-10 User terminal and radio communication method NZ762336B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/029221 WO2019030927A1 (en) 2017-08-10 2017-08-10 User terminal and radio communication method

Publications (2)

Publication Number Publication Date
NZ762336A NZ762336A (en) 2024-05-31
NZ762336B2 true NZ762336B2 (en) 2024-09-03

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