[go: up one dir, main page]

WO2025071816A2 - Réduction du surdébit de formation de faisceaux et amélioration de la couverture dans un système de communications sans fil (wcs) - Google Patents

Réduction du surdébit de formation de faisceaux et amélioration de la couverture dans un système de communications sans fil (wcs) Download PDF

Info

Publication number
WO2025071816A2
WO2025071816A2 PCT/US2024/043147 US2024043147W WO2025071816A2 WO 2025071816 A2 WO2025071816 A2 WO 2025071816A2 US 2024043147 W US2024043147 W US 2024043147W WO 2025071816 A2 WO2025071816 A2 WO 2025071816A2
Authority
WO
WIPO (PCT)
Prior art keywords
primary
coverage
beams
access network
radio access
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/US2024/043147
Other languages
English (en)
Other versions
WO2025071816A3 (fr
Inventor
Anthony Ng'oma
Po-Tsung Shih
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corning Research and Development Corp
Original Assignee
Corning Research and Development Corp
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 Corning Research and Development Corp filed Critical Corning Research and Development Corp
Publication of WO2025071816A2 publication Critical patent/WO2025071816A2/fr
Publication of WO2025071816A3 publication Critical patent/WO2025071816A3/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H04B7/04013—Intelligent reflective surfaces

Definitions

  • This disclosure relates generally to reducing beamforming overhead, such as reducing a number of codewords required for beamforming, in a wireless communications system (WCS), which can include a fifth generation (5G) system, a 5G new-radio (5G-NR) system, and/or a distributed communications system (DCS).
  • WCS wireless communications system
  • 5G fifth generation
  • 5G-NR 5G new-radio
  • DCS distributed communications system
  • Wireless communication is rapidly growing, with ever-increasing demands for high-speed mobile data communication.
  • local area wireless services e.g., so-called “wireless fidelity” or “WiFi” systems
  • WiFi wireless fidelity
  • wide area wireless services are being deployed in many different types of areas (e.g., coffee shops, airports, libraries, etc.).
  • Communications systems have been provided to transmit and/or distribute communications signals to wireless devices called “clients,” “client devices,” or “wireless client devices,” which must reside within the wireless range or “cell coverage area” in order to communicate with an access point device.
  • Example applications where communications systems can be used to provide or enhance coverage for wireless services include public safety, cellular telephony, wireless local access networks (LANs), location tracking, and medical telemetry inside buildings and over campuses.
  • One approach to deploying a communications system involves the use of a radio node/base station that transmits communications signals distributed over physical communications medium remote unit forming radio frequency (RF) antenna coverage areas, also referred to as “antenna coverage areas.”
  • the remote units each contain or are configured to couple to one or more antennas configured to support the desired frequency(ies) of the radio node to provide the antenna coverage areas.
  • Antenna coverage areas can have a radius in the range from a few meters up to twenty meters, as an example.
  • Radio nodes such as base stations, that form cell radio access networks, wherein the radio nodes are configured to transmit communications signals wirelessly directly to client devices without being distributed through intermediate remote units.
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • LTE- Advanced wireless small cell radio access networks
  • Such small cell RANs typically utilize multiple-access technologies capable of supporting communications with multiple users using RF signals and sharing available system resources such as bandwidth and transmit power.
  • Evolved universal terrestrial radio access is the radio interface of 3GPP's LTE upgrade path for UMTS mobile networks.
  • LTE Long Term Evolution
  • E-UTRA Evolved universal terrestrial radio access
  • FIG. 1 is an example of a WCS 100 that includes a radio node 102 configured to support one or more service providers 104(l)-104(N) as signal sources (also known as “carriers” or “service operators” — e.g., mobile network operators (MNOs)) and wireless client devices 106(l)-106(W).
  • the radio node 102 may be a base station that includes modem functionality and is configured to distribute communications signal streams 108(l)-108(S) to the wireless client devices 106(l)-106(W) based on communications signals 110(l)-110(N) received from the service providers 104(l)-104(N).
  • the communications signal streams 108(l)-108(S) of each respective service provider 104(1)- 104(N) in their different spectrums are radiated through an antenna 112 to the wireless client devices 106(l)-106(W) in a communication range of the antenna 112.
  • the antenna 112 may be an antenna array.
  • small cell radio access node
  • small cell that is configured to support the multiple service providers 104(l)-104(N) by distributing the communications signal streams 108(l)-108(S) for the multiple service providers 104(l)-104(N) based on respective communications signals 110(l)-110(N) received from a respective evolved packet core (EPC) network CNI-CNN of the service providers 104(l)-104(N) through interface connections.
  • EPC evolved packet core
  • the radio node 102 includes radio circuits 118(1)-118(N) for each service provider 104(l)-104(N) that are configured to create multiple simultaneous RF beams (“beams”) 120(l)-120(N) for the communications signal streams 108(l)-108(S) to serve multiple wireless client devices 106(1)- 106(W).
  • the multiple RF beams 120(l)-120(N) may support multiple-input, multiple-output (MIMO) communications.
  • the WCS 100 may be configured to operate as a 5G and/or a 5G-NR communications system.
  • the radio node 102 can function as a 5G or 5G-NR base station (a.k.a.
  • the 5G or 5G-NR wireless communications system may be implemented based on a millimeterwave (mmWave) spectrum that can make the communications signals 110(l)-110(N) more susceptible to propagation loss and/or interference. As such, it is desirable to radiate the RF beams 120(l)-120(N) via RF beamforming to help mitigate signal propagation loss and/or interference.
  • mmWave millimeterwave
  • Embodiments disclosed herein include reducing beamforming overhead and improving coverage in a wireless communications system (WCS).
  • WCS wireless communications system
  • a radio node in a radio access network is configured to form a reduced number of radio frequency (RF) beams based on a smaller set of beamforming codewords to cover certain coverage areas in a coverage cell.
  • RF radio frequency
  • the reduced number of RF beams may leave a coverage hole(s) in the coverage cell to potentially degrade overall performance of the radio access network.
  • a passive and/or active reflector device(s) is provided at a strategically selected location(s) to receive and redirect any of the RF beams to thereby provide coverage in the coverage hole(s).
  • a passive and/or active reflector device(s) is provided at a strategically selected location(s) to receive and redirect any of the RF beams to thereby provide coverage in the coverage hole(s).
  • the radio access network includes a radio node.
  • the radio node is configured to radiate a plurality of primary RF beams each steered toward a respective one of a plurality of primary beam directions to thereby cover a respective one of a plurality of primary coverage areas in a coverage cell.
  • the radio access network also includes one or more reflector devices. Each of the one or more reflector devices is located at a respective mounting point in the coverage cell. Each of the one or more reflector devices is configured to receive at least one of the plurality of primary RF beams.
  • Each of the one or more reflector devices is also configured to redirect the at least one of the plurality of primary RF beams to thereby cause at least one secondary RF beam steered toward at least one secondary beam direction to thereby cover at least one secondary coverage area in the coverage cell.
  • An additional exemplary embodiment of the disclosure relates to a method for reducing beamforming overhead in a WCS.
  • the method includes radiating a plurality of primary RF beams each steered toward a respective one of a plurality of primary beam directions to thereby cover a respective one of a plurality of primary coverage areas in a coverage cell.
  • the method also includes deploying one or more reflector devices to each receive at least one of the plurality of primary RF beams.
  • the method also includes configuring each of the one or more reflector devices to redirect the at least one of the plurality of primary RF beams to cause at least one secondary RF beam steered toward at least one secondary beam direction to thereby cover at least one secondary coverage area in the coverage cell.
  • the WCS includes a radio access network.
  • the radio access network includes a radio node.
  • the radio node is configured to radiate a plurality of primary RF beams each steered toward a respective one of a plurality of primary beam directions to thereby cover a respective one of a plurality of primary coverage areas in a coverage cell.
  • the radio access network also includes one or more reflector devices. Each of the one or more reflector devices is located at a respective mounting point in the coverage cell. Each of the one or more reflector devices is configured to receive at least one of the plurality of primary RF beams.
  • Each of the one or more reflector devices is also configured to redirect the at least one of the plurality of primary RF beams to thereby cause at least one secondary RF beam steered toward at least one secondary beam direction to thereby cover at least one secondary coverage area in the coverage cell.
  • FIG. i is a schematic diagram of an exemplary wireless communications system (WCS), such as a radio access network (RAN), configured to communicate communications signals with user devices via radio frequency (RF) beamforming;
  • WCS wireless communications system
  • RAN radio access network
  • RF radio frequency
  • FIGS. 2A-2B are schematic diagrams providing exemplary illustrations of some fundamental aspects related to RF beamforming
  • FIG. 3 is a schematic diagram of an exemplary WCS configured according to any of the embodiments disclosed herein to reduce beamforming overhead concurrent to providing sufficient coverage in a radio access network;
  • FIG. 4 is a schematic diagram providing an exemplary top view of a radio access network configured according to an embodiment of the present disclosure to reduce beamforming overhead concurrent to providing sufficient coverage in the radio access network;
  • FIG. 5 is a flowchart of an exemplary process whereby the radio access network of FIG. 4 can reduce beamforming overhead concurrent to providing sufficient coverage;
  • FIG. 6 is a schematic diagram of an exemplary radio node that can be provided in the radio access network of FIG. 4 to radiate a set of RF beams in a coverage cell;
  • FIGS. 7A-7D are schematic diagrams providing exemplary illustrations of various configurations for improving coverage in the radio access network of FIG. 4;
  • FIG. 8 is a partial schematic cut-away diagram of an exemplary building infrastructure that includes the radio access network of FIG. 4 to reduce beamforming overhead concurrent to improving coverage;
  • FIG. 9 is a schematic diagram of an exemplary mobile telecommunications environment that can include the radio access network of FIG. 4 to reduce beamforming overhead concurrent to improving coverage;
  • FIG. 10 is a schematic diagram of a representation of an exemplary computer system that can be included in or interfaced with any of the components in a WCS, including but not limited to the radio access network of FIG. 4, to reduce beamforming overhead concurrent to improving coverage.
  • Embodiments disclosed herein include reducing beamforming overhead and improving coverage in a wireless communications system (WCS).
  • WCS wireless communications system
  • a radio node in a radio access network is configured to form a reduced number of radio frequency (RF) beams based on a smaller set of beamforming codewords to cover certain coverage areas in a coverage cell.
  • RF radio frequency
  • the reduced number of RF beams may leave a coverage hole(s) in the coverage cell to potentially degrade overall performance of the radio access network.
  • a passive and/or active reflector device(s) is provided at a strategically selected location(s) to receive and redirect any of the RF beams to thereby provide coverage in the coverage hole(s).
  • a passive and/or active reflector device(s) is provided at a strategically selected location(s) to receive and redirect any of the RF beams to thereby provide coverage in the coverage hole(s).
  • FIG. 3 Before discussing a radio access network in a WCS that is configured to reduce beamforming overhead, starting at FIG. 3, a brief overview of a conventional beamforming system is first provided with reference to FIGS. 2A-2B to help explain some fundamental aspects related to RF beamforming.
  • FIG. 2A is a schematic diagram of an RF beamforming system 200 wherein an antenna array 202 emits an RF beam(s) 204 toward one or more user devices 206.
  • the antenna array 202 includes multiple antenna elements 208 that are typically separated from each other by a distance (a.k.a. “antenna spacing”).
  • the RF beam(s) 204 emitted from the antenna elements 208 includes multiple beamforming signals (not shown).
  • the beamforming signals are preprocessed based on a set of complex- valued coefficients, which is commonly known as a beamforming codeword, and/or further processed to provide phase and/or amplitude changes as needed.
  • multiplication of the beamforming codeword is realized by a combination of digital processing and through phase and/or amplitude control applied at an input of the antenna elements 208 to thereby maximize an array gain in a desired beam direction(s) 210.
  • the multiple simultaneously emitted beamforming signals can form the RF beam(s) 204, which may be multiple RF beams each described by gain, intensity, power, and/or electric/magnetic field values versus elevation and azimuth directions.
  • the RF beam(s) 204 is associated with, or defined by, a respective beamforming codeword.
  • a set of different beamforming codewords often referred to as a beamforming codebook, can define multiple different RF beams in multiple beam directions.
  • the RF beam(s) 204 often includes a main lobe 212, where radiated power is concentrated and close to a maximum radiated power, and one or more sidelobes 214 with lesser amounts of radiated power.
  • a radiation direction of the main lobe 212 determines the desired beam direction(s) 210 of the RF beam(s) 204, and a beamwidth of the RF beam(s) 204 is defined by a collection of radiation directions wherein the radiated power is not lower than 3 dB from the maximum radiated power.
  • the narrower the beamwidth the more concentrated the radiated power will be in the main lob 212 and, thus, the farther distance the main lob 212 will be able to propagate.
  • the wider the beamwidth the more spread the radiated power will be in the main lob 212 and, thus, the shorter distance the main lob 212 will be able to propagate.
  • the beamwidth of the RF beam(s) 204 is inversely related to propagation distance of the RF beam(s) 204.
  • the antenna array 202 can be provided in a radio node (e.g., eNB, gNB) to provide wireless communication services in a radio access network.
  • FIG. 2B is a schematic diagram of an exemplary coverage cell 216 wherein the antenna array 202 in FIG. 2A can be configured to radiate multiple RF beams 204 to provide blanket coverage in the coverage cell 216. Common elements between FIGS. 2A and 2B are shown therein with common element numbers and will not be re-described herein.
  • the propagation distance of the RF beams 204 is inversely related to the beamwidth.
  • the antenna array 202 needs to increase the number of the RF beams 204 to provide blanket coverage in the coverage cell 216.
  • the number of beamforming codewords must increase accordingly. Such an increased number of beamforming codewords can create several problems.
  • the antenna array 202 needs to have sufficient storage (e.g., memory, register, etc.) to store an adequate processing resource to process the larger number of beamforming codewords, which can lead to an increased footprint and cost of the antenna array 202.
  • sufficient storage e.g., memory, register, etc.
  • frequent switching between different RF beams 204 can also lead to an increase in computational and switching overhead. It is thus desirable to reduce the cost, complexity, and overhead associated with forming the RF beams 204, while concurrently maintaining sufficient coverage range in the coverage cell 216.
  • a radio node e.g., base station, access point, etc.
  • a radio access network e.g., small cell, picocell, femtocell, etc.
  • a radio node e.g., base station, access point, etc.
  • a radio access network e.g., small cell, picocell, femtocell, etc.
  • the smaller set of narrow-beamwidth RF beams may leave some coverage holes in the coverage cell that can potentially degrade user experiences in the radio access network.
  • a set of reflector devices are provided at strategically selected locations to receive and redirect the RF beams toward the coverage holes. As a result, it is possible to improve coverage concurrent to reducing beamforming overheads in the radio access network.
  • FIG. 3 is a schematic diagram of an exemplary WCS 300 configured according to any of the embodiments disclosed herein to reduce beamforming overhead concurrent to providing sufficient coverage in a radio access network 301.
  • the WCS 300 supports both legacy 4G LTE, 4G/5G non- standalone (NSA), and 5G standalone communications systems.
  • a centralized services node 302 (a.k.a. CU) is provided and is configured to interface with a core network to exchange communications data and distribute the communications data as radio signals to various wireless nodes.
  • the centralized services node 302 is configured to support distributed communications services to a radio node 304 (e.g., 5G or 5G-NR gNB).
  • a radio node 304 e.g., 5G or 5G-NR gNB
  • the WCS 300 can be configured to include additional numbers of the radio node 304, as needed.
  • the functions of the centralized services node 302 can be virtualized through, for example, an x2 interface 306 to another services node 308.
  • the centralized services node 302 can also include one or more internal radio nodes that are configured to be interfaced with a distribution unit (DU) 310 to distribute communications signals to one or more open radio access network (0-RAN) remote units (RUs) 312 that are configured to be communicatively coupled through an 0-RAN interface 314.
  • the 0-RAN RUs 312 are each configured to communicate downlink and uplink communications signals in a respective coverage cell.
  • the centralized services node 302 can also be interfaced with a distributed communications system (DCS) 315 through an x2 interface 316.
  • DCS distributed communications system
  • the centralized services node 302 can be interfaced with a digital baseband unit (BBU) 318 that can provide a digital signal source to the centralized services node 302.
  • BBU digital baseband unit
  • the digital BBU 318 may be configured to provide a signal source to the centralized services node 302 to provide downlink communications signals 320D to a digital routing unit (DRU) 322 as part of a digital distributed antenna system (DAS).
  • DAS digital distributed antenna system
  • the DRU 322 is configured to split and distribute the downlink communications signals 320D to different types of remote units, including a low-power remote unit (LPR) 324, a radio antenna unit (dRAU) 326, a mid-power remote unit (dMRU) 328, and a high-power remote unit (dHRU) 330.
  • the DRU 322 is also configured to combine uplink communications signals 320U received from the LPR 324, the dRAU 326, the dMRU 328, and the dHRU 330 and provide the combined uplink communications signals to the digital BBU 318.
  • the digital BBU 318 is also configured to interface with a third-party central unit 332 and/or an analog source 334 through a radio frequency (RF)/digital converter 336.
  • the DRU 322 may be coupled to the LPR 324, the dRAU 326, the dMRU 328, and the dHRU 330 via an optical fiber-based communications medium 338.
  • the DRU 322 can include a respective electrical-to-optical (E/O) converter 340 and a respective optical-to-electrical (OZE) converter 342.
  • each of the LPR 324, the dRAU 326, the dMRU 328, and the dHRU 330 can include a respective E/O converter 344 and a respective OZE converter 346.
  • the E/O converter 340 at the DRU 322 is configured to convert the downlink communications signals 320D into downlink optical communications signals 348D for distribution to the LPR 324, the dRAU 326, the dMRU 328, and the dHRU 330 via the optical fiber-based communications medium 338.
  • the OZE converter 346 at each of the LPR 324, the dRAU 326, the dMRU 328, and the dHRU 330 is configured to convert the downlink optical communications signals 348D back to the downlink communications signals 320D.
  • the E/O converter 344 at each of the LPR 324, the dRAU 326, the dMRU 328, and the dHRU 330 is configured to convert the uplink communications signals 320U into uplink optical communications signals 348U.
  • the OZE converter 342 at the DRU 322 is configured to convert the uplink optical communications signals 348U back to the uplink communications signals 320U
  • the DU 310 can be coupled to the O-RAN RUs 312 via a fronthaul multiplexer (FHM) 350.
  • FHM fronthaul multiplexer
  • the CU 302, the DU 310, the FHM 350, and the O-RAN RUs 312 collectively form an O-RAN subsystem 352 in the WCS 300.
  • the O-RAN subsystem 352 can be configured to operate based on the O-RAN shared-cell topology to support multiple RU clusters.
  • the RN 304 may be configured to radiate a smaller set of narrowbeamwidth RF beams 354 in the radio access network 301.
  • at least one user equipment (UE) 356 in the radio access network 301 may be in an area(s) not covered by any of the narrow-beamwidth RF beams 354.
  • at least one reflector device 358 may be provided in the radio access network 301 (e.g., mounted on a wall 360) to receive and redirect the narrow-beamwidth RF beams 354 toward the UE 356.
  • FIG. 4 is a schematic diagram providing an exemplary top view of a radio access network 400, which can be identical or functionally equivalent to the radio access network 301 in FIG. 3, configured according to an embodiment of the present disclosure to reduce beamforming overhead concurrent to providing sufficient coverage.
  • the radio access network 400 includes a radio node 402, which can be a base station (e.g., eNB, gNB), a remote unit, or a wireless access point, as an example.
  • the radio node 402 is configured to form a plurality of primary RF beams 404 and steer each of the primary RF beams 404 toward a respective one of a plurality of primary beam directions 406 to thereby cover a respective one of a plurality of primary coverage areas 408 in a coverage cell 410.
  • the radio access network 400 also includes one or more reflector devices 412. Each of the reflector devices 412 are located at strategically selected locations in the coverage cell 410 to receive at least one of the primary RF beams 404.
  • the strategically selected locations are so determined such that each of the reflector devices 412 can effectively redirect a respective one or more of the primary RF beams 404 to cause at least one secondary RF beam 414 steered toward at least one secondary beam direction 416 to thereby cover at least one secondary coverage area 418 in the coverage cell 410.
  • the secondary coverage area 418 is nonoverlapping, at least partially, with the primary coverage areas 408 to thereby fill the coverage holes of the primary coverage areas 408.
  • the radio node 402 may form a lesser number of the primary RF beams 404 with narrower beamwidths to help extend coverage range and reduce beamforming overhead.
  • the strategically placed reflector devices 412 can steer the secondary RF beams 414 toward the secondary coverage areas 418 to thereby cover the coverage holes in the coverage cell 410.
  • the radio access network 400 can effectively reduce beamforming overhead and improve coverage in the coverage cell 410 concurrently.
  • the radio access network 400 can be configured to reduce beamforming overhead and improve coverage in the coverage cell 410 based on a process.
  • FIG. 5 is a flowchart of an exemplary process 500 for configuring the radio access network 400 of FIG. 4 to reduce beamforming overhead and improve coverage in the coverage cell 410.
  • the radio node 402 is configured to radiate the primary RF beams 404 and steer each of the primary RF beams 404 toward a respective one of the primary beam directions 406 to thereby cover a respective one of the primary coverage areas 408 in the coverage cell 410 (block 502).
  • the reflector devices 412 can be deployed (e.g., at strategically selected locations in the radio access network 400) and each configured to receive at least one of the primary RF beams 404 (block 504).
  • Each of the reflector devices 412 can be further configured to redirect the at least one received primary RF beams 404 to cause the secondary RF beam 414 and steer the secondary RF beam 414 toward the second beam direction 416 to thereby cover the secondary coverage area 418 in the coverage cell 410 (block 506).
  • FIG. 6 is a schematic diagram of the radio node 402 in the radio access network 400 of FIG. 4 that is configured to radiate the primary RF beams 404 in the coverage cell 410. Common elements between FIGS. 4 and 6 are shown therein with common element numbers and will not be re-described herein.
  • the radio node 402 includes an antenna array 600, a memory circuit 602, and a beamformer circuit 604.
  • the antenna array 600 includes a plurality of antenna elements 606.
  • the memory circuit 602 which may be solid-state disc (SSD), flash memory, as an example, is configured to store a plurality of beamforming codebooks CBi- CBM.
  • Each of beamforming codebooks CBI-CBM includes a predetermined number of codewords CWI-CWN each determined to form a respective one of the primary RF beams 404.
  • the beamformer circuit 604 is configured to dynamically select a beamforming codebook CBx among the beamforming codebooks CBI-CBM.
  • the beamformer circuit 604 is also configured to process an RF signal 608 based on the codewords CWI-CWN in the selected beamforming codebook CBx to generate a plurality of beamforming RF signals 610(l)-610(N). The beamformer circuit 604 then provides the beamforming RF signals 610(l)-610(N) to all the antenna elements 606 in the antenna array 600 to thereby form a respective one of the primary RF beams 404.
  • FIGS. 7A-7D are schematic diagrams providing exemplary illustrations of various reflector device configurations in the radio access network of FIG. 4. Common elements between FIGS. 4 and 7A-7D are shown therein with common element numbers and will not be re-described herein.
  • FIG. 7A illustrates a configuration wherein the radio node 402 is mounted on a ceiling 700 and the reflector device 412 is mounted on a wall 702.
  • the radio node 402 has a respective height hi relative to a ground 704 and the reflector device 412 has a respective height hi relative to the ground 704 (hi ⁇ hi).
  • the radio node 402 is mounted at a higher location than the reflector device 412.
  • the reflector device 412 may be mounted at a same height as an assumed UE (not shown).
  • FIG. 7B illustrates a configuration wherein the radio node 402 is mounted on a second wall 706.
  • the radio node 402 is also mounted at a higher location than the reflector device 412.
  • the reflector device 412 which can be a passive diffraction reflector or an active RIS, is configured to steer the secondary RF beam 414 toward the secondary beam direction 416 that is horizontal to the ground 704.
  • FIG. 7C illustrates a similar configuration as in FIG. 7A.
  • the reflector device 412 is a diffraction reflector and is configured to steer the secondary RF beam 414 toward the ground 704.
  • FIG. 7D illustrates a similar configuration as in FIG. 7C.
  • the reflector device 412 is a specular reflector and is configured to steer the secondary RF beam 414 toward the ground 704.
  • the secondary RF beam 414 redirected by the specular reflector typically has a narrower beamwidth than the primary RF beam 404.
  • a reflection angle of the secondary RF beam 414 is typically identical to an incident angle of the primary RF beam 404.
  • FIG. 8 is a partial schematic cut-away diagram of an exemplary building infrastructure 800 that includes an exemplary RAN system 802, including but not limited to the radio access network 400 of FIG. 4, wherein the RAN system 802 includes multiple RANs 804 implemented according to a RAN standard (e.g., 0-RAN standard) and each configured to transparently interface with shared RUs through an intermediary neutral host agent device.
  • the building infrastructure 800 in this embodiment includes a first (ground) floor 802(1), a second floor 802(2), and a third floor 802(3).
  • the floors 802(l)-802(3) are serviced by one or more RANs 804 to provide antenna coverage areas 806 in the building infrastructure 800.
  • the downlink communications signals 810D and the uplink communications signals 810U communicated between the RANs 804 and the RUs 812 are carried over a riser cable 814.
  • the riser cable 814 may be routed through interconnect units (ICUs) 816(1)-816(3) dedicated to each of the floors 802(l)-802(3) that route the downlink communications signals 810D and the uplink communications signals 810U to the RUs 812 and also provide power to the RUs 812 via array cables 818.
  • ICUs interconnect units
  • FIG. 9 is a schematic diagram of an exemplary mobile telecommunications RAN system 900 (also referred to as “RAN system 900”) that can include, but is not limited to, the radio access network 400 of FIG. 4, wherein the RAN system 900 includes multiple RANs implemented according to a RAN standard (e.g., O-RAN standard) and each configured to transparently interface with shared RUs through an intermediary neutral host agent device.
  • a RAN standard e.g., O-RAN standard
  • RAN system 900 includes exemplary macrocell RANs 902(1)- 902(M) (“macrocells 902(l)-902(M)”) and an exemplary small cell RAN 904 located within an enterprise environment 906 and configured to service mobile communications between a user mobile communications device 908(l)-908(N) to a mobile network operator (MNO) 910.
  • a serving RAN for the user mobile communications devices 908(l)-908(N) is a RAN or cell in the RAN in which the user mobile communications devices 908(l)-908(N) have an established communications session with the exchange of mobile communications signals for mobile communications.
  • a serving RAN may also be referred to herein as a serving cell.
  • the multi-operator radio node component(s) may be connected (e.g., networked) to other machines in a LAN, an intranet, an extranet, or the Internet.
  • the multi-operator radio node component(s) may operate in a client-server network environment, or as a peer machine in a peer-to-peer (or distributed) network environment. While only a single device is illustrated, the term “device” shall also be taken to include any collection of devices that individually or jointly execute a set (or multiple sets) of instructions to perform any one or more of the methodologies discussed herein.
  • the processing circuit 1002 represents one or more general-purpose processing circuits such as a microprocessor, central processing unit, or the like. More particularly, the processing circuit 1002 may be a complex instruction set computing (CISC) microprocessor, a reduced instruction set computing (RISC) microprocessor, a very long instruction word (VLIW) microprocessor, a processor implementing other instruction sets, or processors implementing a combination of instruction sets.
  • the processing circuit 1002 is configured to execute processing logic in instructions 1016 for performing the operations and steps discussed herein.
  • the computer system 1000 may further include a network interface device 1010.
  • the computer system 1000 also may or may not include an input 1012 to receive input and selections to be communicated to the computer system 1000 when executing instructions.
  • the computer system 1000 also may or may not include an output 1014, including but not limited to a display, a video display unit (e.g., a liquid crystal display (LCD) or a cathode ray tube (CRT)), an alphanumeric input device (e.g., a keyboard), and/or a cursor control device (e.g., a mouse).
  • a display e.g., a liquid crystal display (LCD) or a cathode ray tube (CRT)
  • an alphanumeric input device e.g., a keyboard
  • a cursor control device e.g., a mouse
  • the computer system 1000 may or may not include a data storage device that includes instructions 1016 stored in a computer-readable medium 1018.
  • the instructions 1016 may also reside, completely or at least partially, within the main memory 1004 and/or within the processing circuit 1002 during execution thereof by the computer system 1000, the main memory 1004 and the processing circuit 1002 also constituting the computer-readable medium 1018.
  • the instructions 1016 may further be transmitted or received over a network 1020 via the network interface device 1010.
  • the term “computer-readable medium” should be taken to include a single medium or multiple media (e.g., a centralized or distributed database, and/or associated caches and servers) that store the one or more sets of instructions.
  • the embodiments disclosed herein may be provided as a computer program product, or software, that may include a machine-readable medium (or computer-readable medium) having stored thereon instructions, which may be used to program a computer system (or other electronic devices) to perform a process according to the embodiments disclosed herein.
  • a computer-readable medium or a machine-readable medium includes a machine-readable storage medium (e.g., read only memory (“ROM”), random access memory (“RAM”), magnetic disk storage medium, optical storage medium, flash memory devices, etc.), solid-state memories, optical media, magnetic media, and the like.
  • ROM read only memory
  • RAM random access memory
  • magnetic disk storage medium e.g., magnetic disks, magnetic disks, etc.
  • solid-state memories e.g., compact flash devices, etc.
  • the embodiments disclosed herein include various steps.
  • the steps of the embodiments disclosed herein may be performed by hardware components or may be embodied in machine-executable instructions, which may be used to cause a general-purpose or special-purpose processor programmed with the instructions to perform the steps.
  • the steps may be performed by a combination of hardware and software.
  • the various illustrative logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented as electronic hardware, instructions stored in memory or in another computer-readable medium and executed by a processor or other processing device, or combinations of both.
  • the various illustrative logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented with a processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein, as examples.
  • a controller may be a processor.
  • a processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • RAM Random Access Memory
  • ROM Read Only Memory
  • EPROM Electrically Programmable ROM
  • EEPROM Electrically Erasable Programmable ROM
  • registers a hard disk, a removable disk, a CD-ROM, or any other form of computer-readable medium known in the art.
  • An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium.
  • the storage medium may be integral to the processor.
  • the processor and the storage medium may reside in an ASIC.
  • the ASIC may reside in a remote station.
  • processor and the storage medium may reside as discrete components in a remote station, base station, or server.
  • operational steps described in any of the exemplary embodiments herein are described to provide examples and discussion. The operations described may be performed in numerous different sequences other than the illustrated sequences. Furthermore, operations described in a single operational step may actually be performed in a number of different steps. Additionally, one or more operational steps discussed in the exemplary embodiments may be combined.
  • information and signals may be represented using any of a variety of technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips, that may be references throughout the above description, may be represented by voltages, currents, electromagnetic waves, magnetic fields, or particles, optical fields or particles, or any combination thereof.

Landscapes

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

Abstract

L'invention concerne la réduction du surdébit de formation de faisceaux et l'amélioration de la couverture dans un système de communications sans fil (WCS). Selon l'invention, un nœud radio dans un réseau d'accès radio est configuré pour former un nombre réduit de faisceaux radiofréquence (RF) sur la base d'un plus petit ensemble de mots de code de formation de faisceaux pour couvrir certaines zones de couverture dans une cellule de couverture. Bien que l'utilisation du plus petit ensemble de mots de code de formation de faisceaux puisse aider à réduire la complexité et le surdébit de formation de faisceaux, le nombre réduit de faisceaux RF peut laisser un ou plusieurs trous de couverture dans la cellule de couverture et potentiellement dégrader les performances globales du réseau d'accès radio. À cet égard, dans des modes de réalisation de la présente invention, un ou plusieurs dispositifs réflecteurs passifs et/ou actifs sont disposés à un ou plusieurs emplacements choisis stratégiquement pour recevoir et rediriger l'un quelconque des faisceaux RF afin de fournir une couverture dans le ou les trous de couverture. Par conséquent, il est possible d'améliorer la couverture et de réduire les surdébits de formation de faisceaux dans le réseau d'accès radio.
PCT/US2024/043147 2023-09-28 2024-08-21 Réduction du surdébit de formation de faisceaux et amélioration de la couverture dans un système de communications sans fil (wcs) Pending WO2025071816A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363541006P 2023-09-28 2023-09-28
US63/541,006 2023-09-28

Publications (2)

Publication Number Publication Date
WO2025071816A2 true WO2025071816A2 (fr) 2025-04-03
WO2025071816A3 WO2025071816A3 (fr) 2025-05-08

Family

ID=95201336

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2024/043147 Pending WO2025071816A2 (fr) 2023-09-28 2024-08-21 Réduction du surdébit de formation de faisceaux et amélioration de la couverture dans un système de communications sans fil (wcs)

Country Status (1)

Country Link
WO (1) WO2025071816A2 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL262783B (en) * 2016-05-11 2022-08-01 Idac Holdings Inc Systems and methods for transmitting a signal to a beam-shaped satellite
EP4079024A4 (fr) * 2019-12-17 2023-08-23 Telefonaktiebolaget LM Ericsson (publ) Communications sans fil à formation de faisceau
US12003311B2 (en) * 2021-03-29 2024-06-04 Nec Corporation Dynamic control of an unmanned aerial vehicle using a reconfigurable intelligent surface
KR102570153B1 (ko) * 2021-04-02 2023-08-25 한국전자통신연구원 초고주파 기반 배열 안테나 및 이를 이용한 통신 방법
US11894693B2 (en) * 2021-05-21 2024-02-06 Qualcomm Incorporated Power harvesting protocol for configurable metasurfaces in a wireless wide area network (WWAN)
KR20230057219A (ko) * 2021-10-21 2023-04-28 삼성전자주식회사 Ris 자동 설정 방법 및 장치

Also Published As

Publication number Publication date
WO2025071816A3 (fr) 2025-05-08

Similar Documents

Publication Publication Date Title
US8903454B2 (en) Base station and radio unit for creating overlaid sectors with carrier aggregation
US11528063B2 (en) Supporting distributed massive multiple-input multiple-output (DM-MIMO) in a distributed communications system (DCS)
US11757518B2 (en) Multi-level beam scheduling in a wireless communications circuit, particularly for a wireless communications system (WCS)
US11784693B1 (en) Coverage cluster-based beamforming in a wireless node in a wireless communications system (WCS)
US20140313081A1 (en) Multiple Beam Formation for RF Chip-Based Antenna Array
US20220386235A1 (en) Dynamic power saving in a wireless device in a wireless communications system (wcs)
US12166558B2 (en) Selective radio frequency (RF) reference beam radiation in a wireless communications system (WCS) based on user equipment (UE) locations
US11736175B2 (en) Grid of beams (GOB) adaptation in a wireless communications circuit, particularly for a wireless communications system (WCS)
US20220320732A1 (en) High frequency-based array antenna and communication method therefor
US12074676B2 (en) Beamforming codebook synthesis in a wireless communications system (WCS)
US20240372585A1 (en) Multi-data stream and multi-beam beamforming in a wireless communications system (wcs)
US12160267B2 (en) Dynamic radio frequency (RF) beam pattern adaptation in a wireless communications system (WCS)
US20240314685A1 (en) Reducing beamforming power consumption in a wireless communications system (wcs)
US11936451B2 (en) Multi-beamwidth radio frequency (RF) beamforming optimization in a wireless communications apparatus, particularly for a wireless communications system (WCS)
US20250142355A1 (en) Beamforming coverage optimization in a radio access network in a wireless communications system (wcs)
WO2025071816A2 (fr) Réduction du surdébit de formation de faisceaux et amélioration de la couverture dans un système de communications sans fil (wcs)
WO2020109872A1 (fr) Nœud de réseau doté d'un réseau d'antennes configurable
US20250274168A1 (en) Machine learning assisted beamforming heatmap determination of a wireless communications system (wcs)
WO2025042595A2 (fr) Circuit de surface intelligente reconfigurable (ris) dans un système de communication sans fil (wcs)
US20250113371A1 (en) Remote unit cluster optimization in a wireless communications system (wcs)
US12028130B2 (en) Multi-beam uniform coverage in a coverage cell(s) in a wireless communications system (WCS)
US12328669B2 (en) Autonomous power saving in a remote unit in a wireless communications system (WCS)
US20250358733A1 (en) Machine learning assisted energy saving optimization in a wireless communications system (wcs)
US20250211293A1 (en) Flexible cell-layout via back-to-back trp configuration
US20240172256A1 (en) Optimizing power consumption by transmit channel optimization based on temperature in a beamforming wireless communications system (wcs)

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: 24873256

Country of ref document: EP

Kind code of ref document: A2