Apparatus and method for selecting frame structure in multihop relay broadband wireless access communication system
First Claim
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1. A method for transmitting frame information at a Base Station (BS) in a multihop relay wireless communication system, the method comprising:
- generating a control signal including the frame information;
transmitting the control signal including the frame information to a Relay Station (RS);
when a frame structure used to communicate with the RS is changed, confirming the changed frame structure and information of a time when accessing RSs change the frame structure; and
transmitting a control signal containing the changed frame structure and the change time information to the RS,wherein the frame information includes structure information of a frame for relay service, such that the structure information distinguishes between subframes corresponding to a relay service and subframes corresponding to direct communications between the BS and at least one Mobile Station (MS), andwherein the structure information includes information indicating whether the frame for relay service is a single frame or a super frame which unites at least two single frames.
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Abstract
Apparatus and method for selectively using a frame structure adequate for a system environment in a multihop relay wireless communication system are provided. The method includes generating a control signal including the frame information; and transmitting the control signal to a child Relay Station (RS). Accordingly, the frame structure adequate for the system environment can be used, and the transmission delay and the tradeoff between the overheads in each frame structure can be freely selected.
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Citations
21 Claims
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1. A method for transmitting frame information at a Base Station (BS) in a multihop relay wireless communication system, the method comprising:
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generating a control signal including the frame information; transmitting the control signal including the frame information to a Relay Station (RS); when a frame structure used to communicate with the RS is changed, confirming the changed frame structure and information of a time when accessing RSs change the frame structure; and transmitting a control signal containing the changed frame structure and the change time information to the RS, wherein the frame information includes structure information of a frame for relay service, such that the structure information distinguishes between subframes corresponding to a relay service and subframes corresponding to direct communications between the BS and at least one Mobile Station (MS), and wherein the structure information includes information indicating whether the frame for relay service is a single frame or a super frame which unites at least two single frames. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 20)
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9. A method for confirming a frame structure at a Relay Station (RS) in a multihop relay wireless communication system, the method comprising:
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when a control signal containing frame information is received from a Base Station (BS), confirming from the frame information a frame structure of a frame for relay service, such that the structure information distinguishes between subframes corresponding to a relay service and subframes corresponding to direct communications between the BS and at least one Mobile Station (MS); communicating using the frame structure at the time for commencing the relay service; when a control signal containing frame structure change information is received from the BS while communicating using the frame structure, confirming, from the control signal containing the frame structure change information, a changed frame structure and change time information of the frame structure; and communicating using the changed frame structure at the frame structure change time, wherein the serving node is a Base Station (BS) or a parent RS, wherein the frame structure indicates whether the frame for relay service is a single frame or a super frame which unites at least two single frames. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A Base Station (BS) in a multihop relay wireless communication system, the serving node comprising:
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a frame structure confirmer for confirming a frame structure used to relay service; a message generator for generating a control message that includes information of the frame structure; and a transmitter for sending the control message that includes the information of the frame structure to the RS, wherein the control message that includes the information of the frame structure further includes structure information of a frame for relay service, such that the structure information distinguishes between subframes corresponding to a relay service and subframes corresponding to direct communications between the BS and at least one Mobile Station (MS), wherein the structure information includes information indicating whether the frame for relay service is a single frame or a super frame which unites at least two single frames, and wherein, when a frame structure used to communicate with the RS is changed, the frame structure confirmer confirms the changed frame structure and information of a time when accessing RSs change the frame structure, and the transmitter sends a control message containing the changed frame structure and the change time information to the RS. - View Dependent Claims (17, 18, 19, 21)
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Specification