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
  • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
  • H04L5/0055—Physical resource allocation for ACK/NACK
• • 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
  • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
  • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
  • H04L1/1607—Details of the supervisory signal
  • H04L1/1614—Details of the supervisory signal using bitmaps
• • 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
  • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
  • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
  • H04L1/1607—Details of the supervisory signal
  • H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
• • 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
  • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
  • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
  • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
  • H04L1/1829—Arrangements specially adapted for the receiver end
  • H04L1/1854—Scheduling and prioritising arrangements
• • 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
  • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
  • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
  • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
  • H04L1/1867—Arrangements specially adapted for the transmitter end
  • H04L1/188—Time-out mechanisms
• • 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
  • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
  • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
  • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
  • H04L1/1867—Arrangements specially adapted for the transmitter end
  • H04L1/1896—ARQ related signaling
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W74/00—Wireless channel access
  • H04W74/08—Non-scheduled access, e.g. ALOHA
  • H04W74/0833—Random access procedures, e.g. with 4-step access
  • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
  • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W84/00—Network topologies
  • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
  • H04W84/10—Small scale networks; Flat hierarchical networks
  • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

• the apparatus generally includes means for receiving a PPDU and means for determining a type of response to send for the PPDU based on at least one bit in a PLCP header of the PPDU.
• the computer program product generally includes a computer-readable medium having instructions executable to receive a MAC header FCF of an MPDU and to determine a type of ACK to send for the MPDU based on at least one bit in the FCF.
• K may be greater than N ap if the data symbol streams can be multiplexed using TDMA technique, different code channels with CDMA, disjoint sets of subbands with OFDM, and so on.
• Each selected user terminal transmits user-specific data to and/or receives user-specific data from the access point.
• each selected user terminal may be equipped with one or multiple antennas (i.e., N ut ⁇ 1).
• the K selected user terminals can have the same or different number of antennas.
• N ut m antennas 252 receive the N ap downlink signals from access point 110.
• Each receiver unit 254 processes a received signal from an associated antenna 252 and provides a received symbol stream.
• An RX spatial processor 260 performs receiver spatial processing on N ut m received symbol streams from N ut m receiver units 254 and provides a recovered downlink data symbol stream for the user terminal. The receiver spatial processing is performed in accordance with the CCMI, MMSE or some other technique.
• An RX data processor 270 processes (e.g., demodulates, deinterleaves and decodes) the recovered downlink data symbol stream to obtain decoded data for the user terminal.
• the wireless device 302 may also include a signal detector 318 that may be used in an effort to detect and quantify the level of signals received by the transceiver 314.
• the signal detector 318 may detect such signals as total energy, energy per subcarrier per symbol, power spectral density and other signals.
• the wireless device 302 may also include a digital signal processor (DSP) 320 for use in processing signals.
• DSP digital signal processor
• Including the ACK Indication field in the SIG field as described above provides an indication of the duration of null data packet (NDP) control response frames and normal control response frames, as well as Speed Frame exchange and asymmetric BA. It allows third party STAs to correctly predict the duration of the response, enabling dynamic EIFS calculation based only on PLCP header information.
• the intended receiver may then determine its ACK policy based on rules described herein for short MAC header or with the existing ACK policy field in the QoS Control field of a normal MAC header.
• the operations 700 further include the originating apparatus setting a bit in a Signal (SIG) field or a media access control (MAC) protocol data unit (MPDU) delimiter of the PPDU to a value that indicates the PPDU comprises a single MPDU.
• SIG Signal
• MAC media access control
• MPDU protocol data unit
• the operations 700 may further include the originating apparatus encoding or otherwise providing, in the PLCP header, a modulation and coding scheme (MCS) for the second apparatus to use for transmitting the response.
• MCS modulation and coding scheme
• FIG. 8 is a flow diagram of example operations 800 for wireless communications by a receiving apparatus, in accordance with certain aspects of the present disclosure.
• the operations 800 may begin, at 802, with the receiving apparatus receiving a PPDU.
• the receiving apparatus determines a type of response to send for the PPDU based on at least one bit in a PLCP header of the PPDU.
• the determining at 804 may further include determining the type of response to send based on a parameter in a set of parameters sent to a MAC layer (or more particularly, a MAC sublayer).
• the set of parameters may be based on the at least one bit in the PLCP header.
• the set of parameters may be an RXVECTOR, and the parameter may be a response indication (e.g., RESPONSE INDICATION).
• the operations 800 may further include setting an RID counter based on the parameter.
• the Response BW Indicator may be located in the Service field of the PPDU.
• the one reserved bit in the Service field of the PPDU may be used to indicate to the intended receiver that the received frame is a relayed frame (i.e., one bit of the Service field of the received PPDU may be a Relayed Frame bit).
• This Relayed Frame bit may be used by a STA to indicate that, during a TXOP sharing procedure in a relay mode, the relay may either respond to the received frame with an ACK or whether the relay may directly forward the received PPDU to the next hop (e.g., the AP).
• the type of response is determined based on the Ack policy field in the QoS Control field and/or Frame Control field of the eliciting PPDU while the frame format of the response may be determined based on the RESPONSE INDICATION (also referred to as the ACK INDICATION) TXVECTOR parameter.
• the Ack Policy field determines the Ack Policy indicated by the transmitter
• the RESPONSE INDICATION determines the type of response (normal ACK frame rather than NDP ACK frame, etc.).
• the processor may be responsible for managing the bus and general processing, including the execution of software stored on the machine-readable media.
• the processor may be implemented with one or more general-purpose and/or special- purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuitry that can execute software.
• Software shall be construed broadly to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

Landscapes

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

Priority Applications (3)

Applications Claiming Priority (20)

Publications (1)

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ID=51351102

Family Applications (1)

Country Status (5)

Cited By (8)

Families Citing this family (42)

Citations (1)

Family Cites Families (21)

• 2014
  • 2014-02-19 US US14/184,698 patent/US9853794B2/en active Active
  • 2014-02-20 EP EP14710109.1A patent/EP2959624A1/en not_active Withdrawn
  • 2014-02-20 JP JP2015558227A patent/JP6363109B2/ja active Active
  • 2014-02-20 CN CN201480004883.1A patent/CN104937872B/zh not_active Expired - Fee Related
  • 2014-02-20 WO PCT/US2014/017446 patent/WO2014130702A1/en not_active Ceased

Patent Citations (1)

Non-Patent Citations (2)

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