Subscriber station, time division multiplexing system and transmission timing control method suitable for wireless communication in synchronous PtoMP scheme
AssigneeNEC Corporation
InventorTakatoshi Ogawa
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Abstract
A transmitter transmits a ranging request message to a BS. A receiver receives response information in response to the ranging request message transmitted by the transmitter. A controller transmits the ranging request message from the transmitter at a transmission timing which has been previously set. Subsequently, if the receiver has not received the response information in response to the ranging request message within a predetermined period, the controller retransmits the ranging request message earlier than the transmission timing which has been previously set.
Claims8
A time division multiplexing system comprising a base station and a subscriber station communicable with said base station, wherein
- said subscriber station comprises:
- a transmitter that transmits a ranging request message;
- a receiver that receives response information in response to the ranging request message transmitted by said transmitter;
- and
- a controller that transmits said ranging request message from said transmitter at a transmission timing which has been previously set, and subsequently, if said receiver has not received the response information in response to said ranging request message within a predetermined period, retransmits said ranging request message from said transmitter earlier than a next transmission timing which has been previously set, and
- said base station comprises:
- a base station transmitter;
- a base station receiver that receives said ranging request message;
- and
- a base station controller that, if said base station receiver has received said ranging request message, transmits said response information from said base station transmitter,
- wherein said base station controller sets a data area with respect to said subscriber station within a data frame to be transmitted to said subscriber station, and said base station controller adjusts a position of said data area if a reception time of receiving data from said base station and a transmission time of transmitting the data to said base station have overlapped in said subscriber station.
A transmission timing control method by a time division multiplexing system comprising a base station and a subscriber station communicable with said base station, wherein
- said subscriber station transmits a ranging request message;
- if said base station has received said ranging request message, said base station transmits response information in response to said ranging request;
- and
- after said subscriber station has transmitted said ranging request, if said subscriber station has not received said response information within a predetermined period, said subscriber station retransmits said ranging request message earlier than a next transmission timing which has been previously set,
- wherein said base station sets a data area with respect to said subscriber station within a data frame to be transmitted to said subscriber station;
- and
- said base station adjusts a position of said data area if a reception time of receiving data from said base station and a transmission time of transmitting the data to said base station have overlapped in said subscriber station.
Dependencies are inferred from the claim text.