摘要:
Certain aspects of the present disclosure provide techniques and apparatus for signaling the bandwidth to be used for wireless communications using an RTS/CTS (Request to Send/Clear to Send) frame exchange, providing for bandwidths of at least 20 MHz, 40 MHz, 80 MHz, 160 MHz, or higher. This exchange of bandwidth information may be performed implicitly—by determining the channels in which the RTS/CTS frames are actually sent—or explicitly. In addition to this bandwidth information exchange, aspects of the present disclosure may also allow for Network Allocation Vector (NAV) protection in multiple channels. In this manner, the wireless medium may be reserved, and the transmission may be protected from hidden nodes.
摘要:
Certain aspects of the present disclosure relate to techniques for medium reservation in the case of multi-user (MU) communications. Multiple mechanisms are supported for protecting MU transmissions, wherein appropriate control messages can be exchanged between an access point and served user stations before transmitting downlink data packets.
摘要:
Systems and methods for communicating in a wireless communication system are described. One implementation is provided for effectively resetting stations within a wireless communication system. For example, a signal indicating the end of a contention free period may be transmitted from a device requesting the contention free period to another peer device or an access point. The peer device or access point may be configured to then transmit the occurrence of the end of the contention free period to other devices of the wireless communication system.
摘要:
Systems, methods, and devices for communicating packets having a plurality of types are described herein. In some aspects, the packets include a compressed MAC header. In some aspects the packets include an acknowledgment (ACK) frame. The fields included in a particular packet type may be based on the type of information to be communicated to the receiving device.
摘要:
A method includes sending a sequence number acknowledgement (SN-ACK) from a first device to a second device. The SN-ACK identifies a last consecutively correctly received data unit and includes a retry bit indicating whether at least one data unit of the plurality of data units was received by the first device subsequent to the last consecutively correctly received data unit. The method also includes, when the retry bit has a first value, sending a block acknowledgement (BA) after sending the SN-ACK. The BA includes a bitmap, where each particular bit of the bitmap indicates whether a corresponding data unit was correctly received. When the retry bit has a second value and one or more of the plurality of data units were incorrectly received by the first device, the first device receives a retransmission of one or more data units without sending the BA to the second device.
摘要:
Systems and methods for communicating in a wireless communication system are described. One implementation is provided for effectively resetting stations within a wireless communication system. For example, a signal indicating the end of a contention free period may be transmitted from a device requesting the contention free period to another peer device or an access point. The peer device or access point may be configured to then transmit the occurrence of the end of the contention free period to other devices of the wireless communication system.
摘要:
Systems, methods, and devices for communicating a compressed beacon are described herein. In some aspects, a method of communicating in a wireless network. includes generating a compressed beacon. The compressed beacon includes a next full beacon time indication (NFBTI). The method further includes transmitting, at an access point, the compressed beacon.
摘要:
Certain aspects of the present disclosure provide techniques and apparatus for transmitting, receiving, and acknowledging MAC protocol data units (MPDUs), allowing single bits in a Block Acknowledgment (BA) bitmap to acknowledge receipt of multiple MPDUs. As a result, a greater number of MPDUs may be acknowledged than if each bit acknowledged only a single MPDU. By reducing the overhead associated with a re-transmission bitmap, a greater number of MPDUs may be aggregated, thereby increasing overall throughput.
摘要:
A method for wireless communications is disclosed that includes receiving a plurality of requests to transmit data from a plurality of apparatuses; determining resource allocation for a set of apparatuses in the plurality of apparatuses, wherein the determination is based on the plurality of requests; and transmitting a message comprising the resource allocation to the set of apparatuses to permit data transmission. Another method for wireless communications is disclosed that includes contending for access to a medium based on a request, by an apparatus, with a plurality of other apparatuses; receiving a message, the message comprising a resource allocation based on requests from the apparatus and the other apparatuses, wherein the resource allocation permits data transmission from the apparatus and some of the other apparatuses; and transmitting data by the apparatus based on the message. Apparatuses for performing the methods are also disclosed.