Method for allocating transmission period in a wireless communication system
First Claim
1. A method for allocating a transmission period in a transmission frame period in a wireless network system, said transmission frame period having a preset duration, the method comprising the steps of:
- transmitting a power save multi-poll (PSMP) frame providing a downlink period and an initial uplink period to a station (STA);
transmitting data to the STA in the downlink period provided by the PSMP frame and receiving data from the STA in the initial uplink period provided by the PSMP frame;
upon detecting a resource request message from at least one STA requesting allocation of additional resources required for the transmission of remaining queued uplink data, and after the downlink period and the initial uplink period provided by the PSMP frame, transmitting in the transmission frame period a sub PSMP frame providing an additional uplink period sufficient to transmit at least part of the remaining queued uplink data; and
receiving in the additional uplink period provided by the sub PSMP frame the at least part of the remaining queued uplink data from the at least one STA that transmitted the resource request message.
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Accused Products
Abstract
A method is provided for efficiently allocating a transmission period in a wireless network system. An access point (AP) transmits a PSMP frame indicating a downlink period provided to each station (STA) and a minimum amount of an uplink period allocated to each STA, and at least one sub PSMP frame indicating an uplink period additionally provided for an STA that transmitted a resource request message for remaining queued data in the uplink period indicated by the PSMP frame. If the uplink period indicated by the PSMP frame is insufficient to transmit the queued data, the STA transmits a data unit including a part of the queued data and a resource request message for the remaining queued data in the uplink period. After transmitting the resource request message, the STA receives the sub PSMP frame after the full period indicated by the sub PSMP frame, and transmits the remaining queued data to the AP in the uplink period indicted by the sub PSMP frame.
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Citations
6 Claims
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1. A method for allocating a transmission period in a transmission frame period in a wireless network system, said transmission frame period having a preset duration, the method comprising the steps of:
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transmitting a power save multi-poll (PSMP) frame providing a downlink period and an initial uplink period to a station (STA);
transmitting data to the STA in the downlink period provided by the PSMP frame and receiving data from the STA in the initial uplink period provided by the PSMP frame;
upon detecting a resource request message from at least one STA requesting allocation of additional resources required for the transmission of remaining queued uplink data, and after the downlink period and the initial uplink period provided by the PSMP frame, transmitting in the transmission frame period a sub PSMP frame providing an additional uplink period sufficient to transmit at least part of the remaining queued uplink data; and
receiving in the additional uplink period provided by the sub PSMP frame the at least part of the remaining queued uplink data from the at least one STA that transmitted the resource request message. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification