In order to appropriately estimate the number of radio frames that fail to be acquired, an estimation apparatus 200 includes: a memory storing instructions; and one or more processors configured to execute the instructions to: acquire a plurality of radio frames transmitted and received through a radio channel; specify key frames, based on time information of the plurality of acquired radio frames; calculate a sum of time lengths of at least a part of the plurality of radio frames being located between two adjacent ones of the key frames; and estimate a number of unacquired radio frames, based on the specified key frames and the calculated sum, the unacquired radio frames being radio frames failing to be acquired.

A processing device includes an internal transmitter to receive packets and to forward those packets across a link to an external receiver external to the processing device. The internal transmitter is to receive a portion of a packet and to begin transmitting the portion across the link to the external receiver before the entire overall packet, of which the portion is a part, is received and validated. For a packet determined to have an error, the internal transmitter does not resend the overall packet across the link even if a message is received from the external receiver to resend the overall packet.

The present invention addresses the problem of checking, on the wireless control device side, error occurrence states of CPRI links in detail. In order to solve the problem, this wireless device stores, in wireless link regions that can be freely used by a user, error occurrence states of wireless links, and transmits the error occurrence states to a wireless control device.

A method reducing amount of memory utilized by hybrid automatic repeat request (HARQ) operations is disclosed. When an apparatus employing the method receives an LDPC encoded packet, the apparatus firstly estimates a signal quality value of the received packet, and performs an LDPC decoding algorithm on the received packet. If the received packet is not successfully decoded by the apparatus, the received and decoding-failed packet is compressed in order to reduce bit-width, and the compressed packet is stored in a memory device for later HARQ operations. The apparatus employing the method is also disclosed.

An apparatus for handling an incoming communication data frame containing a plurality of bits is provided. The apparatus may include a plurality of data matchers, each data matcher configured to compare a subset of the plurality of bits of the communication data frame with a predetermined data pattern of a plurality of data patterns and to provide a data matcher output to indicate the result of the data matcher comparison, a plurality of selectors, each selector configured to compare a subset of the data matcher outputs of the plurality of data matchers with a predetermined selection pattern of a plurality of selection patterns and to provide a selector output to indicate the result of the selector comparison, and a frame filter configured to transfer the incoming frame to application logic only if the selector outputs of the plurality of selectors match a predetermined filter pattern, and to also transfer the selector outputs of the plurality of selectors to the application logic.

A method and a system for correcting cyclic redundancy check (CRC) for a frame with last bytes changed are provided. The method includes acquiring a data frame, calculating a CRC of a modified data frame, and determining a corrected CRC for the data frame based on at least the CRC of the modified data frame and a CRC correction field calculated on the bytes to be replaced at the end of the frame. An altered data frame includes the data frame with a number of last bytes of the data frame replaced with new bytes.

Various examples of the present disclosure relate to a wireless communication device and to an apparatus, a device, a method and a computer program for a wireless communication device. The apparatus comprises interface circuitry for obtaining information on a signal received by the wireless communication device. The apparatus comprises processing circuitry configured to determine a presence of a wireless identifier of the wireless communication device within the signal using at least one probabilistic detector.

A method of processing wireless signals, including: receiving a wireless signal carrying a transmission frame having a physical layer header including a data rate index; decoding the physical layer header including the data rate index; filtering out the transmission frame for no further processing if a measured physical layer header energy is below an energy threshold corresponding to the decoded data rate index; decode a sample portion of data codewords of the transmission frame if the transmission frame is not filtered out, wherein the sample portion of data codewords is less than all of the data codewords of the transmission frame; and filtering out the transmission frame for no further processing if the decoding of the sample portion of data codewords fails, and otherwise decode a remainder of the transmission frame.

Techniques for radio frequency uplink performance assessment utilizing downlink erasure frame analysis are provided. An indication of if a received frame has been determined to be an erasure frame is received from a plurality of receiver wireless communications devices. The indications of if the received frame has been determined to be an erasure frame are aggregated. The frame identified by the frame identifier is declared to be an erasure frame when at least one of the plurality of wireless communications devices has indicated the received frame has been determined to be an erasure frame. That an error occurred on an uplink between the sender wireless communication device and the RAN is determined when the frame is declared an erasure frame.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for improving communication throughput despite periodic blockages. In some implementations, a method includes receiving, by a receiver and from a transmitter, code blocks transmitted according to a first set of communication parameters that includes one or more first interleaver parameters used to interleave information in the code blocks prior to transmission. Corrupted portions of at least some of the received code blocks are identified. A blockage duration and a blockage interval of a blockage of communication channel between the transmitter and the receiver are determined based on the corrupted portions of the received code blocks. A second set of communication parameters that includes one or more second interleaver parameters are determined based on the blockage duration and blockage interval. The second set of communication parameters are communicated to the transmitter for subsequent transmissions by the transmitter to the receiver.