Abstract: Methods, systems, and devices are described for wireless communication. An access point (AP) may group stations (STAs) into multi-user (MU) groups with group identifiers (IDs). Within each MU group, the AP may dynamically configure several STAs into a transmission set. Each transmission set may include a different combination of STAs. In some cases, the AP may assign a STA to multiple transmission sets within a group ID. In certain scenarios, the AP may assign a STA to more than one group ID. The AP may restrict the number of group IDs to which a STA is assigned. Each MU group may include a number of user positions that may be occupied by one or more STAs. In some cases, the AP may restrict the number of STAs that may be assigned to (i.e., occupy) each user position.

Abstract: Methods, systems, and devices are described for wireless communication. An access point (AP) may group stations (STAs) into multi-user (MU) groups with group identifiers (IDs). Within each MU group, the AP may dynamically configure several STAs into a transmission set. Each transmission set may include a different combination of STAs. In some cases, the AP may assign a STA to multiple transmission sets within a group ID. In certain scenarios, the AP may assign a STA to more than one group ID. The AP may restrict the number of group IDs to which a STA is assigned. Each MU group may include a number of user positions that may be occupied by one or more STAs. In some cases, the AP may restrict the number of STAs that may be assigned to (i.e., occupy) each user position.

Abstract: Methods, systems, and devices are described for wireless communication. A wireless device may detect a delay in reverse link throughput. The wireless device may reduce the delay by modifying channel access parameters. In one aspect, the wireless device may adjust enhanced distributed channel access (EDCA) parameters. For example, the wireless device may modify contention window size (CW) and arbitration interframe spacing (AIFS). In some cases, the wireless device may instigate EDCA parameter adjustments in another wireless device in the wireless system (e.g., by sending an EDCA adjustment request message). The channel access adjustments may be triggered by detection of various conditions that are indicative of the reverse link delay. For example, the wireless device may monitor the communication of acknowledgments (ACKs) and adjust EDCA parameters if the ACKs are delayed. In other cases, the wireless device may adjust EDCA parameters based at least in part on multi-user (MU) communications.

Abstract: Methods, systems, and devices are described for wireless communications. An access point (AP) communicates to a multi-user (MU) group of stations (STAs) that are assigned disparate modulation and coding schemes (MCSs). The AP sends an MU transmission to the MU group using an MCS and transmit power combination that is associated with the highest estimated throughput. The AP selects the MCS and transmit power combination from two configurations. In the first configuration, a single MCS and corresponding transmit power is used for the MU transmission. In the second configuration, a single transmit power and two different MCSs are used for the MU transmission. Both configurations may use the MCSs associated with the STAs in the MU group. The transmit power may correspond to one of the selected MCSs.

Abstract: Methods, systems, and devices are described for wireless communication. In one aspect, a method of wireless communication includes determining a transmit time metric associated with each transmission group of a number of transmission groups based at least in part on an amount of data in a transmit queue and a modulation and coding scheme (MCS) data rate for at least one wireless communication device in the transmission group. The method also includes scheduling a transmission to a first transmission group of the number of transmission groups based at least in part on the transmit time metric for the first transmission group.

Abstract: Methods, systems, and devices are described for wireless communication at a wireless device. A wireless device (e.g., station or access point) may adapt short inter-frame space (SIFS) burst parameters to improve the performance of the overall network while providing enriched user experience. A wireless device may monitor traffic conditions on the network and dynamically adapt the SIFS burst parameters associated with one or more stations based at least in part on detected variations on the traffic channel. In other examples, the wireless device may allocate a common SIFS burst parameter to be used by a plurality of wireless devices in the basic service set (BSS).

Abstract: A method includes determining, at a first transmitter, whether to permit reuse of a first transmit opportunity (TXOP) associated with a message. The method further includes sending a portion of the message from the first transmitter to a first receiver. The portion of the message indicates whether reuse, by a reuse transmitter, of the first TXOP is permitted. When reuse of the first TXOP is permitted, the reuse transmitter is permitted to send a second message while the first transmitter sends a second portion of the message to the first receiver during the first TXOP.

Abstract: The present invention discloses a method for codec rate adjustment. A media gateway (MGW) determines whether an initial codec rate of a first interface is consistent with an initial codec rate of a second interface or an initial codec rate of a third interface, where the first interface is an A interface, the second interface is an Nb interface, and the third interface is an Iu interface; when determining that the initial codec rate of the first interface is inconsistent with the initial codec rate of the second interface or the initial codec rate of the third interface, the MGW adjusts the initial codec rate of the second interface or the initial codec rate of the third interface to the initial codec rate of the first interface. Therefore, quick and convenient codec rate adjustment can be implemented and voice service quality can be improved.

Abstract: The present invention relates to the wireless transmission technology. Disclosed is a one-to-many 2.4G wireless computer peripheral communication device, which includes a 2.4G wireless USB transmit-receive adapter connected with a USB interface of an intelligent appliance and more than one 2.4G wireless computer peripheral cooperated with the USB transmit-receive adapter. Also disclosed is a transmission method of one-to-many 2.4G wireless computer peripheral communication device, which includes the following steps: (1) presetting an occupied time period of each 2.4G wireless computer peripheral; (2) selecting a channel; (3) establishing a channel; and (4) transmitting data. The present invention enables a USB transmit-receive adapter to communicate with more than one peripheral, and has the advantages that the wireless signal is steady, all the peripherals work at the same time without interfering with each other and it is convenient to add computer peripherals.

Abstract: The present application relates generally to wireless communications, and more specifically to systems, methods, and devices for deferral based on transmission opportunity (TXOP) information. One aspect of the present disclosure provides An apparatus configured to wirelessly communicate. The apparatus includes a processing system configured to obtain a deferral-related parameter from a packet transmitted on a shared wireless access medium and decide whether to defer transmission on the shared wireless access medium based, at least in part, on the at least one deferral-related parameter.

Abstract: Aspects of the present disclosure provide techniques and apparatus for deferral based on basic service set identification (BSSID) information. According to certain aspects, a method for wireless communications is provided. The method generally includes receiving, on a shared access medium, a packet having at least one deferral-related parameter and deciding whether to defer transmission on the shared access medium based, at least in part, on the deferral-related parameter. Another method may generally include generating a packet comprising at least one deferral-related parameter to be used by another apparatus for deciding whether or not the other apparatus should defer transmitting on a shared access medium and providing the packet to the other apparatus.

Abstract: A method includes sending, from a first transmitter to a first receiver, a request to send (RTS) message associated with a first transmit opportunity (TXOP). The RTS message requests the first receiver to indicate whether reuse of the first TXOP is permitted. The method further includes receiving, at the first transmitter from the first receiver, a clear to send (CTS) message responsive to the RTS message.

Abstract: A method includes determining, at a first transmitter, whether to permit reuse of a first transmit opportunity (TXOP) associated with a message. The method further includes sending a portion of the message from the first transmitter to a first receiver. The portion of the message indicates whether reuse, by a reuse transmitter, of the first TXOP is permitted. When reuse of the first TXOP is permitted, the reuse transmitter is permitted to send a second message while the first transmitter sends a second portion of the message to the first receiver during the first TXOP.

Abstract: A method includes determining, at a first transmitter, a clear channel access (CCA) threshold associated with reuse of a first transmit opportunity (TXOP) of a message. The method further includes sending, from the first transmitter to a first receiver, at least a portion of the message, wherein the portion of the message indicates the CCA threshold.

Abstract: The present invention relates to the wireless transmission technology. Disclosed is a one-to-many 2.4G wireless computer peripheral communication device, which includes a 2.4G wireless USB transmit-receive adapter connected with a USB interface of an intelligent appliance and more than one 2.4G wireless computer peripheral cooperated with the USB transmit-receive adapter. Also disclosed is a transmission method of one-to-many 2.4G wireless computer peripheral communication device, which includes the following steps: (1) presetting an occupied time period of each 2.4G wireless computer peripheral; (2) selecting a channel; (3) establishing a channel; and (4) transmitting data. The present invention enables a USB transmit-receive adapter to communicate with more than one peripheral, and has the advantages that the wireless signal is steady, all the peripherals work at the same time without interfering with each other and it is convenient to add computer peripherals.

Abstract: The present invention discloses a method for codec rate adjustment. A media gateway (MGW) determines whether an initial codec rate of a first interface is consistent with an initial codec rate of a second interface or an initial codec rate of a third interface, where the first interface is an A interface, the second interface is an Nb interface, and the third interface is an lu interface; when determining that the initial codec rate of the first interface is inconsistent with the initial codec rate of the second interface or the initial codec rate of the third interface, the MGW adjusts the initial codec rate of the second interface or the initial codec rate of the third interface to the initial codec rate of the first interface. Therefore, quick and convenient codec rate adjustment can be implemented and voice service quality can be improved.

Abstract: A mounting apparatus for securing a motherboard (30) defining several locking holes (32) includes a chassis (10), a lever (20) and a tray (40). The chassis includes a bottom panel (11) and a mounting member (14). Several standoffs (17, 18) are arranged at the bottom panel. A locating portion (144) is formed on the mounting member. The lever pivotally mounted on the bottom panel includes a securing end (242). A fixing post (224) protrudes from the lever. The tray supporting the motherboard defines an opening (442) for receiving the fixing post therein. The lever is rotated from an unlocked position to a locked position. The fixing post pushes the tray. The motherboard slides on the bottom panel until the securing end is disposed on the locating portion. The motherboard is thus mounted in the chassis.

Abstract: A mounting apparatus for mounting a motherboard (10) includes a base (80), an operating member (40) and a supporting tray (20). The base has a plurality of first standoffs (82) formed thereon. The operating member is pivotably attached to the base. The operating member includes a driver (44). The supporting tray is adapted to be attached to the motherboard. The supporting tray defines an opening (291) for receiving the driver therein. The driver is pivoted to engage with the edge of the opening, so that the motherboard moves horizontally to be secured to the first standoffs of the base.

Abstract: A mounting apparatus for securing a motherboard (30) defining several locking holes (32) includes a chassis (10), a lever (20) and a tray (40). The chassis includes a bottom panel (11) and a mounting member (14). Several standoffs (17, 18) are arranged at the bottom panel. A locating portion (144) is formed on the mounting member. The lever pivotally mounted on the bottom panel includes a securing end (242). A fixing post (224) protrudes from the lever. The tray supporting the motherboard defines an opening (442) for receiving the fixing post therein. The lever is rotated from an unlocked position to a locked position. The fixing post pushes the tray. The motherboard slides on the bottom panel until the securing end is disposed on the locating portion. The motherboard is thus mounted in the chassis.