摘要:
Frames in a variable length frame format which are addressed to a plurality of users are multiplexed and preferably transmitted.Data frames having different lengths are multiplexed on a same time through space division multiple access, but since the multiplexed frames are transmitted while eventually having a same length, when the multiplexed data frames from the access point STA0 are received in the respective communication stations STA1 to STA3 in FIG. 4 or when data simultaneously transmitted from the respective communication stations STA1 to STA3 are received in the access point STA0 in FIG. 5, it is possible to eliminate an operation instability of AGC.
摘要:
Suitable beam pattern control is performed while performing access control based on physical carrier sense.A communication device transmits frames having a long preamble under a state where signals will not reach unless a beam pattern is formed, thereby enabling access control based on physical carrier sense, and under a state where signals will sufficiently reach without a beam pattern being formed transmits frames having a shorter preamble, thereby suppressing transmission overhead. Also, a beam pattern and preamble type are decided based on transmission/reception history of access control following CSMA/CA procedures.
摘要:
A terminal intermittently operates while receiving paging information and other necessary information from a base station. In the terminal cycles of DRX with different lengths are combined in a hierarchy manner to determine an intermittent operation period. Upper DRX in the hierarchy has a longer cycle than lower DRX. A period using a cycle of the immediately lower DRX is determined based on information on the cycle of the upper DRX. An intermittent operation of a communication processing unit is controlled based on information on the cycle of DRX in a period using information on a cycle of the lowermost DRX.
摘要:
Suitable beam pattern control is performed while performing access control based on physical carrier sense.A communication device transmits frames having a long preamble under a state where signals will not reach unless a beam pattern is formed, thereby enabling access control based on physical carrier sense, and under a state where signals will sufficiently reach without a beam pattern being formed transmits frames having a shorter preamble, thereby suppressing transmission overhead. Also, a beam pattern and preamble type are decided based on transmission/reception history of access control following CSMA/CA procedures.
摘要:
A terminal intermittently operates while receiving paging information and other necessary information from a base station. In the terminal cycles of DRX with different lengths are combined in a hierarchy manner to determine an intermittent operation period. Upper DRX in the hierarchy has a longer cycle than lower DRX. A period using a cycle of the immediately lower DRX is determined based on information on the cycle of the upper DRX. An intermittent operation of a communication processing unit is controlled based on information on the cycle of DRX in a period using information on a cycle of the lowermost DRX.
摘要:
Frames in a variable length frame format which are addressed to a plurality of users are multiplexed and preferably transmitted.Data frames having different lengths are multiplexed on a same time through space division multiple access, but since the multiplexed frames are transmitted while eventually having a same length, when the multiplexed data frames from the access point STA0 are received in the respective communication stations STA1 to STA3 in FIG. 4 or when data simultaneously transmitted from the respective communication stations STA1 to STA3 are received in the access point STA0 in FIG. 5, it is possible to eliminate an operation instability of AGC.
摘要:
To dynamically change an amount of communication resources to be used for relay communication. A relay station for relaying a radio signal between a base station and a mobile station is provided. The relay station includes a wireless communication unit for transmitting or receiving a radio signal in blocks individually divided in at least one of a time domain, a frequency domain, a code domain, and a space domain, and a communication control unit for causing the wireless communication unit to transmit, in one block, data contained in two or more radio signals received in different blocks by the wireless communication unit.
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:
There is provided a communication control method comprising the steps of: providing an instruction for determining availability of usage of a second communication service using a part or whole of a spectrum assigned to a first communication service from a first communication device to a second communication device; providing an instruction for sensing a communication environment from the second communication device to a communication device located nearby; transmitting sensed data obtained by sensing a communication environment from a third communication device located near the second communication device to the second communication device; determining availability of usage of the second communication service based on the sensed data by the second communication device; transmitting a determination result on availability of usage of the second communication service from the second communication device to the first communication device; and permitting usage of the second communication service in accordance with the determination result received from the second communication device by the first communication device.
摘要:
There is provided a communication control apparatus including a communication controller that controls communication with other communication control apparatuses, the communication exchanging information about terminal grouping to distinguish operations to a specific wireless terminal and to other wireless terminals.