Systems and methods for compression and decompression between elements of a wireless communications system (WCS) such as a distributed antenna system (DAS) contemplate performing a fast Fourier transform (FFT) operation before compression and transmission across a transport medium in a DAS. Further, a size of an FFT block may be varied based on latency requirements. For example, the FFT block size may be based on a sampling rate extracted from channel information. By selecting the FFT block size to meet latency requirements, overall throughput across the transport medium may be increased.

Embodiments of the disclosure provide systems and methods for providing random access to segmented and encrypted or compressed data stored in a repository. Retrieving at least a portion of a file stored in a repository can comprise storing a plurality of files in the repository. A request to retrieve at least a portion of one of the plurality of files can be received and object metadata for the requested one of the plurality of files can be obtained. A determination can be made based on the obtained metadata as to whether the requested one of the plurality of files is a multipart file. In response to determining the requested one of the plurality of files is not a multipart file, a single file retrieval process performing and in response to determining the requested one or the plurality of files is a multipart file, a multipart retrieval process can be performed.

Compression techniques can reduce the fronthaul throughput in split radio access network (RAN) architectures for next generation designs. Adaptive fixed-point mapping can reduce the throughput requirements between a baseband unit (DU) and a remote radio unit (RU). Thus, a bit or plurality of bits can indicate the type of data being passed over the fronthaul. Consequently, adaptive mapping between precoded downlink data and non-precoded downlink data suited to the type of data passed over the fronthaul can achieve high compression ratios.

Compression techniques can reduce the fronthaul throughput in split radio access network (RAN) architectures for next generation designs. Adaptive fixed-point mapping can reduce the throughput requirements between a baseband unit (DU) and a remote radio unit (RU). Thus, a bit or plurality of bits can indicate the type of data being passed over the fronthaul. Consequently, adaptive mapping between precoded downlink data and non-precoded downlink data suited to the type of data passed over the fronthaul can achieve high compression ratios.

The embodiments of the present disclosure provide a method and apparatus for distinguishing between data formats, and a communication device. The method includes a terminal receives a downlink data packet, and determines whether the data format of the downlink data packet is a first data format or a second data format, wherein the first data format indicates that the downlink data packet is encrypted using a first key of a source base station and/or compressed using a first header compression format of the source base station, and the second data format indicates that the downlink data packet is encrypted using a second key of a target base station and/or compressed using a second header compression format of the target base station.

The present disclosure provides a Bluetooth speaker base, a method and a system for controlling a Bluetooth speaker base. The method includes: acquiring voice data, and determining whether the voice data includes a wake-up word, when positions of the Bluetooth speaker base and a Bluetooth speaker satisfy a preset condition; controlling the Bluetooth speaker base to enter a wake-up recognition state, and compressing the voice data based on a compression ratio, when the voice data includes the wake word; and sending the voice data compressed to a mobile terminal through a first profile, to cause the mobile terminal to decompress the voice data received, send the voice data decompressed to a server for voice recognition to obtain audio data, and send the audio data to the Bluetooth speaker for playback through a second profile.

Partition information associated with one or more partitions that divide a range of values into at least a higher and lower set of values is received. An uncompressed value that falls within the range of values is received and a compressed value that includes a set indicator and intra-set information is generated using the uncompressed value. This includes generating the set indicator based at least in part on whether the uncompressed value falls in the higher or lower set of values, determining whether the uncompressed value includes an extraneous bit where it is necessary but not sufficient that the uncompressed value fall in the higher set of values for the uncompressed value to include the extraneous bit, and generating the intra-set information, including by: excluding the extraneous bit in the uncompressed value from the intra-set information if it is determined to be included. The compressed value is output.

An apparatus and method for downlink data transmission and decoding are disclosed. In the method, a physical layer code block or a physical layer code block group is decoded. A medium access control (MAC) sub-packet corresponding to the decoded physical layer code block or the physical code block group is decoded without waiting for any subsequent physical layer code blocks to be decoded. The decoded MAC sub-packet is passed up a protocol stack.

Disclosed are a broadcast signal transmitting apparatus, a broadcast signal receiving apparatus, and a broadcast signal transceiving method in the broadcast signal transmitting and receiving apparatuses. The broadcast signal transmitting method comprises the steps of: compressing headers of data packets which are included in an Internet protocol (IP) stream identified by access information, wherein the compressed data packets include a first packet containing both static information and dynamic information in the header thereof, and a second packet containing dynamic information in the header thereof; splitting the static information from the header of the first packet and diverting the remaining part thereof into the second packet; outputting an IP stream, which includes the second packet, via a data physical layer pipe (PLP); outputting, via a common PLP, a common stream, which includes the static information of the header of the first packet split in the previous step, compression information and IP-PLP mapping information for linking the IP stream and the data PLP; generating a signal frame on the basis of the data from the data PLP and the data of the common PLP; and transmitting a broadcast signal which includes the signal frame.

A method for transmitting broadcast signals, includes encapsulating input packets including Internet Protocol (IP) packets or Transport Stream (TS) packets into link layer packets in a link layer, each header of the link layer packets including packet type information representing a type of the input packets in a payload of each link layer packet and payload configuration information representing a configuration of the payload of each link layer packet, wherein for a first link layer packet including a single packet, the payload configuration information of the header in the first link layer packet has a value representing that the first link layer packet carries the single packet, the header further includes header mode information representing a length related to the first link layer packet.