System and method indicating delays added to packets due to retransmission events. The method includes the steps of receiving multiple packet streams and multiplexing them into a first multiplexed packet stream; storing in memory the first multiplexed packet stream together with time indications; receiving a retransmission request and selecting data for retransmission; multiplexing the first multiplexed packet stream and the data for retransmission into a second multiplexed packet stream; utilizing the time indications for calculating delays that were added to packets of the second multiplexed packet stream as a result of fulfilling the retransmission request; adding the calculated delays to at least some of the packets of the second multiplexed packet stream; and transmitting the second multiplexed packet stream.

Provided are a method and an apparatus for control channel decoding of a terminal in a multi-node system. The method sets a search space for searching a control channel and can perform the decoding by using different demodulation methods according to aggregation levels capable of constituting the control channel within the search space. In addition, the method determines the DCI format to be searched according to a transmission mode and can use different demodulation methods according to the determined DCI format. Furthermore, the method modulates DCI format to a first modulation degree when demodulating the DCI format, and can demodulate the DCI format to a second modulation degree when the DCI format is not detected.

A system and method including multi-dimensional coded modulation wherein symbols within successive blocks of symbols are mapped using at least two different constellations to differentiate the symbols from each other. At least one data bit is encoded by an order of the symbols within each block of symbols. The receiver decodes the data by decoding at least one bit from the order of the symbols mapped with the first and second constellations.

Symbol replica precision is improved when symbol-level cancellation is performed in a receiver in downlink non-orthogonal access. Transmission is performed by multiplexing a transmission scheme by which excellent performance is obtained during demodulation and a transmission scheme by which excellent performance is obtained during decoding. Provided is a base station device including an addition unit that adds a number of signals the number exceeding a number of transmit antenna ports at the same time and the same frequency, and performing transmission from one or more transmit antenna ports. The addition unit adds signals generated by mutually different transmission schemes. Provided is a terminal device that receives a signal in which a number of signals generated by mutually different transmission schemes are added, the number exceeding a number of transmit antenna ports, at the same time and the same frequency. The terminal device includes a demodulation unit that performs demodulation processing for at least one of the mutually different transmission schemes, a replica generation unit that generates a symbol replica by using an output from the demodulation unit, and a cancellation unit that subtracts the symbol replica from the received signal.

Aspects of the disclosure provide a terminal adapted to transmit audio data via Bluetooth to a device. The terminal includes a controller adapted to detect configuration parameters of the device and optimally determine configuration parameters of the terminal, and a transmission module capable of transmitting a packet of a first packet type based on a first mode of the terminal and a packet of a second packet type based on a second mode of the terminal. The audio data is modulated by a first modulation mode in the first mode and the audio data is modulated by a second modulation mode in the second mode that is more efficient than the first modulation mode. When the device cannot operate in the second mode but can operate in the first mode, the controller causes the transmission module to create a packet of the first packet type containing the audio data.

A multi-carrier cellular wireless network (400) employs base stations (404) that transmit two different groups of pilot subcarriers: (1) cell-specific pilot subcarriers, which are used by a receiver to extract information unique to each individual cell (402), and (2) common pilots subcarriers, which are designed to possess a set of characteristics common to all the base stations (404) of the system. The design criteria and transmission formats of the cell-specific and common pilot subcarriers are specified to enable a receiver to perform different system functions. The methods and processes can be extended to other systems, such as those with multiple antennas in an individual sector and those where some subcarriers bear common network/system information.

A method for operating a wireless network in a plurality of radio operating environments is disclosed. A first parameter value set is selected from a library of two or more parameter value sets. Each of the parameter value sets includes a value for each of one or more communication-related parameters. The first parameter value set is appropriate for a first target radio operating environment. The action of selecting the first parameter value set is performed for a first set of one or more infrastructure radios that are to be operated in the first target radio operating environment. The first parameter value set is applied to the first set of one or more infrastructure radios so that the first set of one or more infrastructure radios will start using the first parameter value set to wirelessly communicate with user devices.

The present invention discloses data receiving and sending methods and apparatuses and a system, and relates to the field of communications technologies. The data receiving method includes: receiving a data carrier; deciding polar radius values of multiple labeled constellation points carried at a pre-determined location in the data carrier, to determine a numerical value indicated by a polar radius value of each labeled constellation point in the multiple labeled constellation points; determining, according to a sequence including numerical values indicated by polar radius values of all the labeled constellation points in the multiple labeled constellation points, a demodulation scheme of a constellation point, other than the multiple labeled constellation points, carried in the data carrier; and demodulating, according to the determined demodulation scheme, the constellation point, other than the multiple labeled constellation points, carried in the data carrier.

A wireless access point (WAP) efficiently adjusts one or more operational parameters, such as transmission power, a data rate, a modulation scheme, and/or an encoding scheme to provide some examples, to provide efficient communication with one or more communication devices. This efficient allocation of the one or more operational parameters can represent a per-station allocation of the one or more operational parameters, a dynamic allocation of the one or more operational parameters, and/or a combination of the per-station allocation and the dynamic allocation. In the per-station allocation, the WAP determines and uses one or more values for the operational parameters for each of the one or more communication devices. In the dynamic allocation, the WAP monitors one or more distances between the WAP and one or more of the one or more communication devices. The WAP can continuously monitor, periodically monitor, or monitor over a discrete period of time the one or more distances. Thereafter, the WAP determines and uses one or more values for the operational parameters for each of the one or more communication devices based upon the one or more distances.

Disclosed is a .[.UGMII.]. system to interface multirate devices including 10 gigabit per second data exchange rates. Mode selection is enabled to provide for automatic detection and adaptation to any transmit rate including 10M, 100M, 1G, and 10G. Mode selection comprises the negotiation between the UGMII extension sublayers located at the MAC and PHY to select between one of several operational modes including: XGMII communication, GMII encapsulation, Clause 22 MDIO register management and Clause 45 MDIO register management. Selection of UGMII and XGMII operating modes are negotiated between the MAC and PHY using ordered sets to announce and acknowledgement a mode change. In one embodiment 802.3 Clause 46 defined ordered sets are utilized.