Abstract: Provided is a bird countermeasure system. The bird countermeasure system includes a bird countermeasure robot configured to be operated through a remote command while patrolling or moving in an area adjacent to a runway or taxiway along which airplanes take off, land or taxi so as to approach the runway or taxiway or to detect or repel birds located close to the runway or taxiway.

Abstract: A system of physical layer packet format and signaling methods is disclosed, wherein signaling overhead is minimized in applications where multiple users share air interface resources; improving efficiency in orthogonal frequency division multiplexing (OFDM) and orthogonal frequency division multiple access (OFDMA) communication systems.

Abstract: A system and method for channel interleaver and layer mapping in a communications system with spatial multiplexing are provided. A method for transmitting information over M layers, where M is a positive integer value representing a number of spatial layers, and M?2, includes receiving at least one codeword to transmit, grouping a plurality of symbols in the at least one codeword into M groups, mapping the M groups to the M layers, and transmitting the M layers. The at least one codeword includes the plurality of symbols, and each symbol includes two or more code bits.

Abstract: A system and method for rate matching to enhance system throughput based on packet size is provided. A method for transmitting information includes encoding a block of N bits, where N is an integer, demultiplexing the encoded block of N bits into at least one subblock of systematic bits and at least one subblock of parity bits, and permuting the at least one subblock of systematic bits and the at least one subblock of parity bits to generate at least one permuted subblock. The method also includes forming at least one output block from the at least one permuted subblock, computing a starting position of a redundancy version for a hybrid automatic repeat request (HARQ) transmission based on a relationship between N and a threshold, and transmitting the redundancy version. The redundancy version begins at the computed starting position and ends when a specified number of bits has been transmitted.

Abstract: In a communication method, a sequence of information bits is encoded into systematic bits and parity bits. The systematic bits and the parity bits are grouped in output blocks, each output block to be assigned to an address of a constellation scheme. The addresses include addresses that are more prone to error and address that are less prone to error so that the symbols are grouped such that bits in groups of consecutive bits of the sequence of information bits are not all assigned to addresses that are more prone to error.

Abstract: A method and apparatus of signaling radio resource allocation in a wireless communication system includes the time-frequency resources into multiple regions; defining a channel tree within at least one region, wherein the channel tree has base nodes which are determined using the area of the region and the area of a base node; determining a channel identifier assignment for a mobile station, wherein the channel identifier corresponds to a collection of base nodes from a channel tree; transmitting an indication of the determined channel identifier to the mobile station; and transmitting a packet to a mobile station or receiving a packet from the mobile station using the physical time-frequency resources, which correspond to the channel identifier.

Abstract: A system of physical layer packet format and signaling methods is disclosed, wherein signaling overhead is minimized in applications where multiple users share air interface resources; improving efficiency in orthogonal frequency division multiplexing (OFDM) and orthogonal frequency division multiple access (OFDMA) communication systems.