摘要:
A wireless base station apparatus to establish a wireless connection with a terminal equipment detects an intensity of a signal transmitted from another terminal equipment; calculates, as transmission power for the terminal equipment, a sum of a first parameter adjusted at an interval of predetermined time and a second parameter taking a value between a predetermined first minimum value and a predetermined first maximum value; sets, as the second parameter, the smaller value of a difference between first target power and the first parameter and the first minimum value when detecting that reception power of the signal transmitted from another terminal equipment is equal to or larger than a predetermined value, and further sets a difference between the first target power and the first minimum value as the first parameter and the first minimum value as the second parameter when the first parameter is adjusted.
摘要:
The present invention is a control data communication method for multiplexing and transmitting plural mutually independent types of control data by using a control channel and for separating each of the control data received from the control channel, in that changes and transmits patterns of reference signals included in the control channel according to a format for multiplexing control data, detects a format for multiplexing the transmitted control data according to the pattern of the reference signals included in the control channel, and separates each control data in correspondence with the detected format.
摘要:
In a radio communication system, each of user terminals together with transmitting a data signal to a base station using different data transmission band frequencies that are assigned by a base station, performs time-division multiplexing of a pilot signal with the data signal and transmit the resulting signal to the base station. A resource management unit of the base station decides pilot transmission bands for each user terminal so that the pilot transmission band covers the data transmission band for each user terminal by frequency offset, and instructs the user terminal to transmit pilot signals using the decided pilot transmission band frequencies. Thereby the base station can estimate channel for each frequency of the data transmission band using the pilot signal.
摘要:
A wireless communication system constructed by a MIMO antenna system and transmitting information from a transmitter having Nt number of transmitting antennas to a receiver 3 having Nr number of receiving antennas. The receiver 3 of this wireless communication system 1 linking the inputs and outputs between a demodulating unit 32 demodulating the input signals from receiving antennas 31 and a decoding unit 35 receiving as input that demodulation output and decoding the non-binary LDPC code of the GF(q) one-to-one under predetermined conditions to enable the inputs and outputs of this demodulating unit 32 and decoding unit 35 to be directly connected and thereby improve the decoding characteristic. That predetermined condition is preferably q=2 Nt.m.
摘要:
A base station apparatus (110) includes an obtaining unit (111), a configuring unit (112), and a communications unit (113). The obtaining unit (111) obtains distance information that indicates the distance (d) to another base station apparatus (120). The configuring unit (112) configures based on the distance (d) indicated by the distance information obtained by the obtaining unit (111), an upper limit count for the control channels to be transmitted simultaneously to terminal devices (101, 102) connected to the base station apparatus (110). The communications unit (113) transmits the control channels to the terminal devices (101, 102), based on the upper limit count configured by the configuring unit (112).
摘要:
In a radio communication system, each of user terminals together with transmitting a data signal to a base station using different data transmission band frequencies that are assigned by a base station, performs time-division multiplexing of a pilot signal with the data signal and transmit the resulting signal to the base station. A resource management unit of the base station decides pilot transmission bands for each user terminal so that the pilot transmission band covers the data transmission band for each user terminal by frequency offset, and instructs the user terminal to transmit pilot signals using the decided pilot transmission band frequencies. Thereby the base station can estimate channel for each frequency of the data transmission band using the pilot signal.
摘要:
A base station apparatus performs radio communications with multiple mobile stations using a multi-input multi-output (MIMO) technique. The base station apparatus includes a scheduler configured to assign a mobile station to a first stream over a first frequency band or a second stream over a second frequency band included in the first frequency band, in accordance with the level of interference of the mobile station with a neighbor cell.
摘要:
A base station apparatus (110) includes an obtaining unit (111), a configuring unit (112), and a communications unit (113). The obtaining unit (111) obtains distance information that indicates the distance (d) to another base station apparatus (120). The configuring unit (112) configures based on the distance (d) indicated by the distance information obtained by the obtaining unit (111), an upper limit count for the control channels to be transmitted simultaneously to terminal devices (101, 102) connected to the base station apparatus (110). The communications unit (113) transmits the control channels to the terminal devices (101, 102), based on the upper limit count configured by the configuring unit (112).