摘要:
Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource.
摘要:
Provided is a wireless relay system including multiple terminal station apparatuses and a base station apparatus. The base station apparatus includes: a base station reception unit that respectively receives pieces of upstream data traffic from the multiple terminal station apparatuses; an encoding unit that, if pieces of upstream data traffic that require mutual forwarding in opposite directions are present in the respective pieces of upstream data traffic, performs network encoding on the respective pieces of upstream data traffic such that the pieces of upstream data traffic are pieces of data traffic of mutually identical content; and a base station transmission unit that simultaneously transmits encoded data traffic as downstream data traffic to the multiple terminal station apparatuses. The terminal station apparatuses each include: a terminal station transmission unit that transmits the upstream data traffic to the base station apparatus; a terminal station reception unit that receives the encoded data traffic; and a decoding unit that decodes the encoded data traffic using the upstream data traffic.
摘要:
An apparatus may include a hierarchical arrangement of a plurality of resource slices of a mobile network. Each of a plurality of logical networks is allocated a resource slice within the mobile network for each of a plurality of layers, wherein each logical network provides network services for one of a plurality of service categories; wherein each logical network includes at least one dedicated resource slice that is dedicated to the logical network, and at least one shared resource slice that is shared among a plurality of the logical networks; the plurality of resource slices including a plurality of resource slices of a first layer and a plurality of resource slices of a second layer, wherein the first layer is lower than the second layer, wherein data from a set of the resource slices of the second layer are aggregated into a single resource slice of the first layer (downlink direction) and data from the single resource slice of the first layer is demultiplexed and forwarded to a selected resource slice of the set of resource slices of the second layer (uplink direction).
摘要:
A hub apparatus and a method for controlling the same are provided for efficiently managing a frequency slot or a time slot in communication between at least one hub apparatus and at least one device. The hub apparatus includes a communicator configured to receive a communication signal from at least one device; a controller configured to allocate time slots for the at least one device on the basis of the communication signal received from the at least one device, and when the communicator receives a communication signal from a new device other than the at least one device, transmit a control signal for reallocating time slots for at least one device having the new device; and a memory configured to store data that is associated with a communication frequency, a use amount of time slots, and a communication signal strength of the at least one device.
摘要:
According to one embodiment, a wireless communication device includes a receiver and a transmitter. The receiver is configured to receive a first packet including a first information and, after reception of the first packet, receive a second packet in a predetermined frequency band. The transmitter is configured to transmit a third packet in the predetermined frequency band simultaneously with reception of the second packet with a transmission power equal to or less than a maximum transmission power based on the first information.
摘要:
The invention concerns a method for precoding in an open loop transmission communications system. The method includes precoding data at each of M REs with a precoding matrix, precoding each of DM-RSs with one column of a precoding matrix which is same as that used for precoding M data REs. The method is distinguished by using at least L≥2 different precoding matrices from a set of precoding matrices W to precode the M REs and the E allocated REs such that REs precoded with a first precoding matrix are interleaved with REs precoded with at least one additional, different precoding matrix and the number of used precoding matrices L is adapted to the transmission rank r and number N of available DM-RS.
摘要:
Even when the lengths of data items to be transmitted to users are not the same, the frames multiplexed at the same time finally have the same frame length and are transmitted.Even when the lengths of frames for the users are not the same at the time when a transmission request is received from a higher layer, a communication apparatus reconfigures at least two of the frames having short lengths into a frame having a long length through Aggregation so that the frames finally have the same frame length and transmits the frames at the same time in a multiplexed manner. On the transmitter side, the transmission power used per destination communication station can be increased due to a decrease in the total number of multiplexed frames. On the receiver side, an unstable AGC operation can be prevented.
摘要:
Technology for adapting uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet) is disclosed. One method can include a reference enhanced Node B (eNB) determining a preferred adaptive UL-DL configuration. The eNB can receive node configuration information for at least one neighboring node. The eNB can reconfigure an adaptive UL-DL configuration for at least one of the reference eNB and the at least one neighboring node based on the node configuration information and sounding reference signal (SRS) subframe scheduling of the reference eNB and the at least one neighboring eNB.
摘要:
Systems and methods for correcting frequency error in a received signal include: receiving a satellite signal, the satellite signal having a bandwidth and a center frequency; determining the profile of the satellite signal; computing the center frequency of the satellite signal based on the profile of the received signal; and generating a reference signal at the computed center frequency. The systems and methods may further include computing a center frequency of each of a plurality of satellite signals based on the computed center frequency. Determining the profile may include sweeping a tuner above and below a given reference frequency; measuring the received signal strength during the sweeping operation; and determining the profile based on the received signal strength.
摘要:
A method and system for transmitting data is provided. The method includes receiving by a first interface device, data. The data is divided into a plurality of data packets and stored within an internal buffer. A first group of data packets are transmitted to a network node communicatively coupled to the first interface device. The first group of data packets are transmitted from the first communication device to a second interface device via a first communication network. A second group of data packets are transmitted to a first communication device communicatively coupled to the first interface device. The second group of data packets are transmitted from the first communication device to the second interface device via a second communication network associated with the first communication device.