摘要:
In a method for generating a data unit for transmission via a communication channel, wherein the data unit conforms to a first communication protocol, a preamble of the data unit is generated. The preamble includes a first field having information that indicates a duration of the data unit, the first field being formatted such that the first field is decodable by a receiver device that conforms to a second communication protocol but does not conform to the first communication protocol to determine the duration of the data unit based on the first field. Additionally, the preamble is formatted such that a portion of the preamble is decodable by a receiver device that conforms to a third communication protocol but does not conform to the first communication protocol. Also, the preamble is formatted such that a receiver device that conforms to the first communication protocol can determine that the data unit conforms to the first communication protocol. A data portion of the data unit that conforms to the first communication protocol and does not conform to either (i) the second communication protocol or (ii) the third communication protocol is generated.
摘要:
In an embodiment method, a central controller of a wireless system selects a common reference signal (“CRS”) pattern for muting on a first type of control channel by the central controller, wherein the first type of control channel is formed with resource elements (“REs”). The central controller identifies, for a set of user equipments (“UEs”) in a serving area of the central controller, a set of subframes including the first type of control channel, wherein the set of subframes has REs that overlap the CRS pattern for muting. The central controller mutes the overlapping REs in the first type of control channel, and frequency-division multiplexes the first type of control channel with data channels. The central controller transmits, to the set of UEs, the first type of control channel with the muted REs on the identified set of subframes.
摘要:
The present invention realizes electronic commerce by providing a portable terminal (501). The portable terminal comprises a receiver, a barcode former, a display (590) and a detector (725). The receiver receives data representing product information and service information. The barcode former forms barcode data, based on the data received, the barcode data including a plurality of display barcodes, information defining the display order of the barcodes and information representing an end of the display of the plurality of display barcodes. The display (590) displays the barcode data generated by the barcode former. The detector (725) detects light or a signal from a barcode reader (708). The detection result of the detector influences the switching of the display from the currently displayed barcode to the display barcode next in the display order. The barcode reader is provided at a shop terminal etc. to read one of the plurality of barcodes.
摘要:
Described is a mobile station comprising a processor and a memory. The memory contains a table and stores a set of instructions for execution on the processor. The set of instructions, when executed, causes the mobile station to: i) listen for one of a transmission of a data packet by an access point to a further mobile station and a transmission of an acknowledgment by the further mobile station to the access point; ii) add an address of the further mobile station to the table when the one of the listened for transmissions is detected; and iii) send a further data packet destined for the further mobile station directly to the further mobile station when the address is present in the table.
摘要:
A channel descriptor management message is transmitted on a broadcast connection to a mobile terminal. The channel descriptor management message provides a format for a frame. The frame includes a resource space. The channel descriptor management message defines a plurality of channels within the resource space and allocates at least one of the channels to a plurality of users. Subsequent resource allocation messages may refer to a location within a channel rather than a location within the entire resource space. This is achieved with resource allocation maps and sub-maps (nested MAP's).