Relay station, base station, and radio communication method
First Claim
1. A relay station for transferring data transmitted or received between a plurality of mobile stations and a base station, the data being transferred during respective intervals of radio frames, the relay station comprising:
- a storage section configured to store a table including a plurality of records each corresponding to one of the mobile stations, each record having a group identifier indicating to which group the corresponding mobile station belongs, the group identifier being associated with a) a value indicating during what frame intervals data is to be transferred, and b) an offset, from a reference subframe, that specifies which subframe within a frame is utilized to transfer the data; and
a transmission processing section configured to perform data transmission toward the base station, based on the records in the table that correspond to the one or more mobile stations and that are selected according to a current frame to be transferred, when data has to be relayed from the mobile stations to the base station as well as when no data has to be relayed from the mobile stations to the base station,wherein the transmission processing section is further configured in such a way that when there is no data to be transferred for a mobile station indicated in the selected corresponding record, the transmission processing section transmits to the base station, with timing corresponding to the mobile station, header information indicating that data size is zero.
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Accused Products
Abstract
In a radio communication system including a relay station and a base station, the relay station transfers data from each mobile station to the base station based on a correspondence selected according to a frame from among different correspondences between identification information for a mobile station and timing in a frame at which data from the mobile station is transmitted. The base station identifies the data from each mobile station included in the frame received from the relay station based on the correspondence selected according to the frame. This radio communication method can be applied to data transmission from the base station to the relay station.
24 Citations
12 Claims
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1. A relay station for transferring data transmitted or received between a plurality of mobile stations and a base station, the data being transferred during respective intervals of radio frames, the relay station comprising:
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a storage section configured to store a table including a plurality of records each corresponding to one of the mobile stations, each record having a group identifier indicating to which group the corresponding mobile station belongs, the group identifier being associated with a) a value indicating during what frame intervals data is to be transferred, and b) an offset, from a reference subframe, that specifies which subframe within a frame is utilized to transfer the data; and a transmission processing section configured to perform data transmission toward the base station, based on the records in the table that correspond to the one or more mobile stations and that are selected according to a current frame to be transferred, when data has to be relayed from the mobile stations to the base station as well as when no data has to be relayed from the mobile stations to the base station, wherein the transmission processing section is further configured in such a way that when there is no data to be transferred for a mobile station indicated in the selected corresponding record, the transmission processing section transmits to the base station, with timing corresponding to the mobile station, header information indicating that data size is zero. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A relay station for transferring data transmitted or received between a plurality of mobile stations and a base station, the data being transferred during respective intervals of radio frames, the relay station comprising:
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a storage section configured to store a table including a plurality of records each corresponding to one of the mobile stations, each record having a group identifier indicating to which group the corresponding mobile station belongs, the group identifier being associated with a) a value indicating during what frame intervals data is to be transferred, and b) an offset, from a reference subframe, that specifies which subframe within a frame is utilized to transfer the data; and a transmission processing section configured to perform data transmission in a current frame received from the base station to one or more of the mobile stations based on records in the table that are selected according to the current frame, when data has to be relayed from the base station to the mobile stations as well as when no data has to be relayed from the base station to the mobile stations, wherein the transmission processing section is further configured in such a way that when there is no data to be transferred for a mobile station indicated in the selected corresponding record, the transmission processing section transmits to the base station, with timing corresponding to the mobile station, header information indicating that data size is zero.
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11. A base station for transmitting data to or receiving data from a plurality of mobile stations via a relay station, the data being transferred during respective intervals of radio frames, the base station comprising:
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a storage section configured to store a table including a plurality of records each corresponding to one of the mobile stations, each record having a group identifier indicating to which group the corresponding mobile station belongs, the group identifier being associated with a) a value indicating during what frame intervals data is to be transferred, and b) an offset, from a reference subframe, that specifies which subframe within a frame is utilized to transfer the data; and an identification section configured to identify data transmission from each mobile station included in a current frame received from the relay station based on records in the table that are selected according to the current frame, the data transmission is performed when data has to be relayed from the mobile stations to the base station as well as when no data has to be relayed from the mobile stations to the base station, wherein when there is no data to be transferred for a mobile station indicated in the selected corresponding record, the relay station transmits to the base station, with timing corresponding to the mobile station, header information indicating that data size is zero.
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12. A base station for transmitting data to or receiving data from a plurality of mobile stations via a relay station, the data being transferred during respective intervals of radio frames, the base station comprising:
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a storage section configured to store a table including a plurality of records each corresponding to one of the mobile stations, each record having a group identifier indicating to which group the corresponding mobile station belongs, the group identifier being associated with a) a value indicating during what frame intervals data is to be transferred, and b) an offset, from a reference subframe, that specifies which subframe within a frame is utilized to transfer the data; and a transmission processing section configured to perform data transmission for one or more of the mobile stations to the relay station based on records in the table that are selected according to a current frame that is to be transmitted, when data has to be relayed from the base station to the mobile stations as well as when no data has to be relayed from the base station to the mobile stations, wherein the transmission processing section is further configured in such a way that when there is no data to be transferred for a mobile station indicated in the selected corresponding record, the transmission processing section transmits to the base station, with timing corresponding to the mobile station, header information indicating that data size is zero.
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Specification