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EP-3416343-B1 - SYSTEMS, METHODS, AND DEVICES FOR EXTENDING RANGE OF WIRELESS NETWORKS

EP3416343B1EP 3416343 B1EP3416343 B1EP 3416343B1EP-3416343-B1

Inventors

  • LI, QINGHUA
  • Chen, Xiaogang
  • JEON, JEONGHO
  • NIU, HUANING
  • TANG, YANG
  • ZHU, YUAN
  • KWON, HWAN-JOON

Dates

Publication Date
20260506
Application Date
20150925

Claims (12)

  1. A device (800) for encoding one or more high-efficiency, HE, signal fields associated with multiple users the device (800) comprising: at least one memory (808) that stores computer-executable instructions; and at least one processor (806) configured to access the at least one memory (808), characterized in that the at least one processor is configured to execute the computer-executable instructions to: determine a first HE signal field of one or more HE signal fields of a frame associated with one or more first station devices, STAs (104); segment the first HE signal field into a common part and at least two user specific parts; encode a first user specific part (504) of the one or more user specific parts individually; encode a second user specific part (506) of the one or more user specific parts individually, wherein the first user specific part (504) is associated with a first group of STAs (104) and the second user specific part (506) is associated with a second group of STAs (104); and cause to send the first HE signal field to the one or more first STAs (104), the first HE signal field including the common part, the encoded first user specific part (512) and the encoded second user specific part (514), using a first subcarrier of one or more subcarriers.
  2. The device (800) of claim 1, wherein the first group of STAs is comprised of two STAs (104).
  3. The device (800) of any one of claims 1-2, wherein the encoded first user specific part (504) comprises first tail bits (508), and wherein the encoded second user specific part (506) comprises second tail bits.
  4. The device (800) of any one of claims 1-3, wherein the one or more subcarriers are associated with at least one of a 20 MHz frequency channel, a 40 MHz frequency channel, an 80 MHz frequency channel, or 160 MHz frequency channel.
  5. The device (800) of any one of claims 1-4, wherein the first subcarrier is associated with a 20 MHz frequency channel.
  6. The device (800) of any one of claims 1-5, further comprising a transceiver (810) configured to transmit and receive wireless signals.
  7. The device (800) of any one of claims 1-6, further comprising an antenna (801) coupled to the transceiver (810).
  8. A method comprising: determining, by one or more processors (806), a first HE signal field of one or more HE signal fields of a frame associated with one or more first station devices, STAs (104); segment the first HE signal field into a common part and at least two user specific parts; encoding a first user specific part (504) of the one or more user specific parts individually; encoding a second user specific part (506) of the one or more user specific parts individually, wherein the first user specific part (504) is associated with a first group of STAs (104) and the second user specific part (506) is associated with a second group of STAs (104); and causing to send the first HE signal field to the one or more first STAs (104), the first HE signal field including the common part, the encoded first user specific part (512) and the encoded second user specific part (514), using a first subcarrier of one or more subcarriers.
  9. The method of claim 8, wherein the first group of STAs is comprised of two STAs (104).
  10. The method of any one of claims 8-9, wherein the encoded first user specific part (512) comprises first tail bits, and wherein the encoded second user specific part (514) comprises second tail bits.
  11. The method of any one of claims 8-10, wherein the one or more subcarriers are associated with at least one of a 20 MHz frequency channel, a 40 MHz frequency channel, an 80 MHz frequency channel, or 160 MHz frequency channel.
  12. A computer program product comprising computer program code that when executed implements the method of any of claims 8 to 11.

Description

TECHNICAL FIELD Embodiments described herein generally relate to wireless networks. BACKGROUND A next generation WLAN, IEEE 802.11ax or High-Efficiency WLAN (HEW), is under development. Uplink multiuser MIMO (UL MU-MIMO) and Orthogonal Frequency-Division Multiple Access (OFDMA) are two major features included in the new standard. For both features, however, the physical layer header is an overhead and reducing its size and reliability is an important aspect. US 2012/02994294 relates to preamble designs for sub-1GHz frequency bands in IEEE 802.11ah and 802.11af standard compliant networks. JOONSUK KIM (BROADCOM): "Bit-Consideration-for-SIG-fields; 11-10-0382-00-00ac-bit-consideration-for-sig-fields", IEEE DRAFT; 11-10-0382-00-00AC-BIT-CONSIDERATION-FOR-SIG-FIELDS, IEEE-SA MENTOR, PISCATAWAY, NJ USA, vol. 802.11ac, 17 March 2010 (2010-03-17), pages 1-12, XP017677237 is a presentation relating to Bit considerations for SIGNAL fields. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a network diagram illustrating an example network environment, according to one or more example embodiments of the disclosure;FIG. 2 illustrates resource allocation in a physical layer OFDM frame, according to one or more example embodiments of the disclosure;FIG. 3 illustrates preamble structure in a physical layer OFDM frame, according to one or more example embodiments of the disclosure;FIG. 4 illustrates a partial repetition of a codebit stream, according to one or more example embodiments of the disclosure;FIG. 5 illustrates fragmentation of a physical layer header and decoding trail bits, according to one or more example embodiments of the disclosure;FIG. 6 illustrates fragmentation of a physical layer header and decoding trail bits, according to one or more example embodiments of the disclosure;FIG. 7 illustrates example operations in a method for use in systems and devices, according to one or more example embodiments of the disclosure;FIG. 8 illustrates a functional diagram of an example communication station or example access point, according to one or more example embodiments of the disclosure; andFIG. 9 shows a block diagram of an example of a machine upon which any of one or more techniques (e.g., methods) according to one or more embodiments of the disclosure discussed herein may be performed. The embodiments illustrated in figures 5 and 6 are embodiments useful for understanding the invention. DETAILED DESCRIPTION Example embodiments described herein provide certain systems, methods, and devices, for extending range of various Wi-Fi networks, including, but not limited to, IEEE 802.11ax. Outdoor applications are one of four scenarios currently being evaluated in IEEE 802.11ax discussions. Range of a Wi-Fi network may be an important feature in outdoor applications. Simulation results comparing long-term evolution unlicensed spectrum (LTE-U) and WiFi indicate that range of a WiFi signal is shorter than LTE-U operating on the same band. Accordingly, the physical layer header, for example, signal field (SIG) may need to be enhanced such that the header is not a bottleneck for subsequent beamformed data. Various proposals have been presented for the design of physical layer header, e.g., the signal field (SIG). Some proposals in DensiFi use ordinary binary phase-shift keying (BPSK) rate half modulation with a long SIGNAL field, e.g., 200-500 bits over 80 MHz. Their high efficiency (HE) SIGNAL field, however, can be a bottleneck for outdoor applications. The example designs discussed here not only reduce the overhead but also increase the reliability of the SIG. The embodiments of certain systems, methods, and devices described in the present disclosure can provide techniques that extend the range of the header. The following description and the drawings sufficiently illustrate specific embodiments to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. Portions and features of some embodiments may be included in, or substituted for, those of other embodiments. Details of one or more implementations are set forth in the accompanying drawings and in the description below. Further embodiments, features, and aspects will become apparent from the description, the drawings, and the claims. Embodiments set forth in the claims encompass all available equivalents of those claims. The terms "communication station", "station", "handheld device", "mobile device", "wireless device" and "user equipment" (UE), as used herein, refer to a wireless communication device such as a cellular telephone, smartphone, tablet, netbook, wireless terminal, laptop computer, a wearable computer device, a femtocell, High Data Rate (HDR) subscriber station, access point, access terminal, or other personal communication system (PCS) device. The device may be either mobile or stationary. The term "access point" (AP) as used herein may be a fixed station. An access point