Method for transmitting a signal using a relay station in a wireless communication system
First Claim
1. A method for transmitting a signal at a relay station using a Time Division Duplex (TDD) frame structure comprising a plurality of TDD frames, in a wireless communication system, the method comprising:
- communicating, at the relay station, with at least one child station and a parent station during a downlink interval and an uplink interval,wherein the downlink interval comprises a downlink access zone located at a beginning of the downlink interval for transmitting a first signal to the at least one child station, a downlink common zone located at an end of the downlink interval for receiving a second signal from the parent station and a first gap zone located between the downlink access zone and the downlink common zone such that the downlink access zone is immediately followed by the first gap and the first gap is immediately followed by the downlink common zone,wherein the uplink interval comprises a uplink access zone located at a beginning of the uplink interval for receiving a third signal from the at least one child station, an uplink common zone located at an end of the uplink interval for transmitting a fourth signal to the parent station and a second gap within the uplink interval is located between the uplink access zone and the uplink common zone such that the uplink access zone is immediately followed by the second gap and the second gap is immediately followed by the uplink common zone,wherein the parent station comprises a base station and the at least one child station comprises a mobile station,wherein the relay station transmits the first signal to the mobile station via the downlink access zone in the downlink interval and receives the second signal from the base station via the downlink common zone in the downlink interval, andwherein the relay station receives the third signal from the mobile station via the uplink access zone in the uplink interval and transmits the fourth signal to the base station via the uplink common zone in the uplink interval.
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Abstract
A method of transmitting a signal using a relay station is disclosed. In a wireless communication system, the present invention includes the steps of enabling the relay station to receive the signal via a relay interval in a downlink interval using a first wireless communication scheme and a second wireless communication scheme in common from a base station and enabling the relay station to transmit the received signal to a first terminal using the first wireless communications scheme via a first downlink interval in the downlink interval or to a second terminal using the second wireless communication scheme via a second downlink interval.
15 Citations
15 Claims
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1. A method for transmitting a signal at a relay station using a Time Division Duplex (TDD) frame structure comprising a plurality of TDD frames, in a wireless communication system, the method comprising:
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communicating, at the relay station, with at least one child station and a parent station during a downlink interval and an uplink interval, wherein the downlink interval comprises a downlink access zone located at a beginning of the downlink interval for transmitting a first signal to the at least one child station, a downlink common zone located at an end of the downlink interval for receiving a second signal from the parent station and a first gap zone located between the downlink access zone and the downlink common zone such that the downlink access zone is immediately followed by the first gap and the first gap is immediately followed by the downlink common zone, wherein the uplink interval comprises a uplink access zone located at a beginning of the uplink interval for receiving a third signal from the at least one child station, an uplink common zone located at an end of the uplink interval for transmitting a fourth signal to the parent station and a second gap within the uplink interval is located between the uplink access zone and the uplink common zone such that the uplink access zone is immediately followed by the second gap and the second gap is immediately followed by the uplink common zone, wherein the parent station comprises a base station and the at least one child station comprises a mobile station, wherein the relay station transmits the first signal to the mobile station via the downlink access zone in the downlink interval and receives the second signal from the base station via the downlink common zone in the downlink interval, and wherein the relay station receives the third signal from the mobile station via the uplink access zone in the uplink interval and transmits the fourth signal to the base station via the uplink common zone in the uplink interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13, 14, 15)
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8. A method for transmitting a signal at a multi-hop relay station using Time Division Duplex (TDD) frame structure comprising a plurality of TDD frames, in a wireless communication system, the method comprising:
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transmitting, at the relay station, a signal to a child node via a downlink access zone in a downlink interval; either receiving, via a downlink bi-directional zone in the downlink interval, signals from both a parent node and the child node or transmitting, via the downlink bi-directional zone in the downlink interval, signals to both the parent node and the child node; receiving, at the relay station, a signal from the child node via an uplink access zone in an uplink interval; and either transmitting via an uplink bi-directional zone in the uplink interval, signals to both the parent node and the child node or receiving, via the uplink bi-directional zone in the uplink interval, signals from both the parent node and the child node, wherein the downlink bi-directional zone and the uplink bi-directional zone apply frequency division multiplexing (FDM) within the TDD frame structure for bi-directionally communicating with both the parent node and the child node, wherein the parent node comprises a base station, wherein the child node comprises a subordinate mobile station, wherein the relay station transmits signals to the mobile station via the downlink access zone in the downlink interval and then either receives, via the downlink bi-directional zone in the downlink interval, signals from both the base station and the subordinate mobile station or transmits, via the downlink bi-directional zone in the downlink interval, signals to both the base station and the subordinate mobile station, and wherein the relay station receives signals from the mobile station via the uplink access zone in the uplink interval and then either transmits, via the uplink bi-directional zone in the uplink interval, signals to both the base station and the subordinate mobile station or receives, via the uplink bi-directional zone in the uplink interval, signals from both the base station and the subordinate mobile station. - View Dependent Claims (9, 10, 11, 12)
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Specification