Abstract: Disclosed in present invention is a wireless communication system, comprising: a CAP, for determining a structure of a current physical frame according to scheduled transmission resources, and sending information for indicating the structure of the current physical frame in the current physical frame; and at least one STA communicating with the CAP, for determining the structure of the current physical frame according to the information for indicating the structure of the current physical frame, the length of each physical frame depending on the structure of the current physical frame and being not fixed. Also disclosed are two devices for wireless communication.

Abstract: Disclosed in the present invention is a method for data transmission. The method comprises the following steps: receiving coded bit streams; mapping said coded bit streams to every spatial stream. A device for implementing stream mapping, a device for implementing rate matching and a transmitter are also disclosed in the present invention. With the method and device in the present invention, compared with the current stream mapping method, the mapping is more uniform with higher gain in high order modulation and multi-streams circumstance in a closed-loop model. And the system performance of a radio communication system could be further improved.

Abstract: A method for frame acknowledgement, comprising bearing a delayed acknowledgement instruction into a data frame; the delayed acknowledgement instruction configured to instruct a return acknowledge response when it has free physical resources; and transmitting the data frame having the delayed acknowledgement instruction attached thereto.

Abstract: A method for frame acknowledgement, comprising caching the unacknowledged frame; determining whether a caching capacity threshold is reached; bearing an immediate acknowledgement instruction into a data frame, and sending the data frame the caching capacity threshold is reached; wherein, the immediate acknowledgement instruction is for use in instructing a return acknowledge response of all unacknowledged frames in a specified physical frame period.

Abstract: In the present invention, before data transmission, a “connection”, between a requesting end and a destination end, identified by a traffic flow identifier (FID) is established or modified through traffic flow management. Therefore, when the requesting end and the destination end perform data transmission on the traffic flow, the FID alone can sufficiently serve as the identifier, so as to save the need of carrying the destination end identifier in each exchanged data packet, thereby simplifying the operation.

Abstract: Provided in the present invention are a method and device for use in frame acknowledgement. The method comprises: bearing an immediate acknowledgement instruction into a data frame, the immediate acknowledgement instruction is for use in instructing an immediate return frame acknowledgement response; and transmitting the data frame having the immediate acknowledgement instruction attached thereto.

Abstract: A method for open loop uplink access power control comprises: estimating the uplink transmission path loss according to received signal power of a station (STA) and the transmit power of a central access point (CAP); determining the transmission bandwidth allocated by the CAP for uplink transmission and deviation adjustment of the CAP; determining a modulation-coding mode and determining requirements of the carrier-to-noise ratio corresponding to the modulation-coding mode; and calculating a target value for adjusting the transmit power of the STA. Also disclosed is a device for open loop uplink access power control.

Abstract: A method and apparatus for transmitting and receiving via a high speed downlink shared channel (HS-DSCH) is disclosed. A wireless transmit/receive unit (WTRU) receives the HS-DSCH while operating in a cell forward access channel (Cell-FACH) state, a cell paging channel (Cell-PCH) state, or URA paging channel (URA-PCH) state.

Abstract: Methods of selecting an enhanced uplink (EU) transport format combination (E-TFC) are disclosed. A maximum number of bits of scheduled data for an upcoming transmission may be determined, wherein the highest value is lower or equal to: K e , ref · S ? ? G L e , ref · A ed , ref 2 · 10 ? ? ? harq / 10 , where SG is a serving grant, Le,ref is the number of EU dedicated physical data channels (E-DPDCHs) used for a selected reference E-TFC, Ke,ref is the number of data bits of the reference E-TFC, ?harq is a hybrid automatic repeat request (HARM) offset for a specific data flow to be transmitted as signaled by higher layers, and Aed,ref is a ratio derived from a parameter ?E-DPDCH signaled by higher layers for the selected reference E-TFC.

Abstract: Methods of selecting an enhanced uplink (EU) transport format combination (E-TFC) are disclosed. A maximum number of bits of scheduled data for an upcoming transmission may be determined, wherein the highest value is lower or equal to: K e , ref · S ? ? G L e , ref · A ed , ref 2 · 10 ? ? ? harq / 10 , where SG is a serving grant, Le,ref is the number of EU dedicated physical data channels (E-DPDCHs) used for a selected reference E-TFC, Ke,ref is the number of data bits of the reference E-TFC, ?harq is a hybrid automatic repeat request (HARQ) offset for a specific data flow to be transmitted as signaled by higher layers, and Aed,ref is a ratio derived from a parameter ?E-DPDCH signaled by higher layers for the selected reference E-TFC.