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US 8,274,992 B2Granted
Communication method for wireless lans
AssigneeKabushiki Kaisha Toshiba
InventorsYasuyuki Nishibayashi, Masahiro Takagi, Tomoko Adachi, Tetsu Nakajima, Tomoya Tandai, Yoriko Utsunomiya
Life of this patent
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Abstract
A physical frame is generated and transmitted to a destination terminal. In this physical frame, one of a data frame, an acknowledgement frame, and an acknowledgement request frame, and a transmission permission frame which is used in place of a normal Ack frame associated with a delayed Block Ack, and permits the destination terminal to perform piggyback transmission, are aggregated.
Claims19
A communication apparatus capable of performing frame transmissions in a channel use period, comprising:
- an acquisition device configured to acquire a channel use period for transmitting frames to a destination terminal;
- a generation device configured to generate a first physical frame,
- the first physical frame including a plurality of transmission data frames,
- each of the transmission data frames including header information and information for error detection;
- a transmission device configured to transmit the first physical frame to the destination terminal;
- and
- a reception device configured to receive, after the transmitting the first physical frame, a second physical frame from the destination terminal,
- the second physical frame including both an acknowledgement frame for the transmission data frames and reception data frames;
- wherein the first physical frame includes both permission information for the destination terminal to transmit the acknowledgement frame and also the reception data frames,
- wherein in the first physical frame, a permission period during which the destination terminal is allowed to transmit the acknowledgement frame and the reception data frames is described, and the permission period is set within the channel use period,
- and wherein the transmission device performs a recovery operation if the acknowledgement frame in the second physical frame is not received, although the second physical frame is received within the channel use period.
8 more elements
A communication apparatus, comprising:
- a reception device configured to receive a first physical frame including a plurality of reception data frames from a transmission source terminal,
- each of the reception data frames including header information and information for error detection;
- and
- a transmission device configured to transmit a second physical frame including both an acknowledgement frame for the reception data frames and a transmission data frame to the transmission source terminal, during a channel use period which is acquired by the transmission source terminal;
- wherein the reception device receives, after transmitting the second physical frame, a third physical frame that includes an acknowledgement frame for the transmission data frame from the transmission source terminal,
- wherein the first physical frame includes permission information for the transmission source terminal to transmit both the acknowledgement frame and the transmission data frame,
- wherein in the first physical frame, a permission period for permitting transmission of the transmission data frames is described, and the permission period is set within the channel use period, and
- wherein the transmission device performs a recovery operation for requesting the acknowledgement frame, if the acknowledgement frame in the third physical frame is not received.
5 more elements
A communication method for performing frame transmissions in a channel use period, comprising:
- acquiring a channel use period for transmitting frames to a destination terminal;
- generating a first physical frame,
- the first physical frame including a plurality of transmission data frames,
- each of the transmission data frames including header information and information for error detection;
- transmitting the first physical frame to the destination terminal;
- receiving, after transmitting the first physical frame, a second physical frame from the destination terminal,
- the second physical frame including both an acknowledgement frame for the transmission data frames and a reception data frame;
- and
- performing a recovery operation when the acknowledgement frame in the second physical frame is not received, although the second physical frame is received within the channel use period,
- wherein the first physical frame includes permission information for the destination terminal to transmit both the acknowledgement frame and the reception data frame, and
- wherein in the first physical frame, a permission period during which the destination terminal is allowed to transmit the acknowledgement frame and the reception data frame is described, and the permission period is set within the channel use period.
8 more elements
A communication method, comprising:
- receiving a first physical frame including a plurality of reception data frames from a transmission source terminal,
- each of the reception data frames including header information and information for error detection;
- transmitting a second physical frame including both an acknowledgement frame for the reception data frames and a transmission data frame to the transmission source terminal, during a channel use period that is acquired by the transmission source terminal;
- and
- performing a recovery operation for requesting the acknowledgement frame, if the acknowledgement frame in the third physical frame is not received,
- wherein in the receiving, after transmitting the second physical frame, a third physical frame that includes an acknowledgement frame for the transmission data frames from the transmission source terminal is received,
- wherein the first physical frame includes permission information for the transmission source terminal to transmit both the acknowledgement frame and the transmission data frame,
- wherein in the first physical frame, a permission period for permitting transmission of the transmission data frame is described, and the permission period is set within the channel use period.
5 more elements
Dependencies are inferred from the claim text.