US2015103701A1PendingUtilityA1
Method for relaying data performed by a relay station in wireless communication system based on tdd
Est. expiryJan 5, 2029(~2.4 yrs left)· nominal 20-yr term from priority
H04J 3/08H04B 7/2606H04B 7/2656H04L 5/14H04L 5/0055H04B 7/15542H04B 7/212H04L 1/18H04B 7/14
56
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Claims
Abstract
A method of relaying data performed by a relay station in a wireless communication system based on time division duplex (TDD) is provided. The relay station receives downlink data from a base station and relays the downlink data to at least one mobile station in an uplink subframe which belongs to an unlinked subframe. Accordingly, uplink acknowledgement (ACK) collision can be avoided, and efficiency of resource allocation can be increased.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A method for receiving a downlink signal in a time division duplex (TDD) system, the method performed by a wireless device and comprising:
receiving, from a base station, a first uplink-downlink configuration which indicates an assignment of downlink subframes and at least one uplink subframe regarding 10 subframes of a TDD frame; receiving, from the base station, a second uplink-downlink configuration which informs at least one uplink subframe transmitting an acknowledgement/non-acknowledgement (ACK/NACK) in the TDD frame; and receiving, from the base station, a downlink signal in the TDD frame, wherein when a subframe, in the TDD frame, is indicated as an uplink subframe according to the second uplink-downlink configuration, the uplink subframe is not used for receiving the downlink signal.
2 . The method of claim 1 , wherein the first uplink-downlink configuration and the second uplink-downlink configuration is received through a higher layer signal.
3 . The method of claim 1 , wherein the first uplink-downlink configuration is any one uplink-downlink configuration of the below table.
Uplink-downlink
Subframe number
configuration
0
1
2
3
4
5
6
7
8
9
0
D
S
U
U
U
D
S
U
U
U
1
D
S
U
U
D
D
S
U
U
D
2
D
S
U
D
D
D
S
U
D
D
3
D
S
U
U
U
D
D
D
D
D
4
D
S
U
U
D
D
D
D
D
D
5
D
S
U
D
D
D
D
D
D
D
6
D
S
U
U
U
D
S
U
U
D
4 . The method of claim 3 , wherein the second uplink-downlink configuration is uplink-downlink configuration 2 or uplink-downlink configuration 5.
5 . A wireless device, comprising:
a radio frequency (RF) unit for transmitting and receiving a radio signal; and a processor coupled with the RF unit, wherein the processor is configured to: receive, from a base station, a first uplink-downlink configuration which indicates an assignment of downlink subframes and at least one uplink subframe regarding 10 subframes of a TDD frame; receive, from the base station, a second uplink-downlink configuration which informs at least one uplink subframe transmitting an acknowledgement/non-acknowledgement (ACK/NACK) in the TDD frame; and receive, from the base station, a downlink signal in the TDD frame, wherein when a subframe, in the TDD frame, is indicated as an uplink subframe according to the second uplink-downlink configuration, the uplink subframe is not used for receiving the downlink signal.
6 . The wireless device of claim 5 , wherein the first uplink-downlink configuration and the second uplink-downlink configuration is received through a higher layer signal.
7 . The wireless device of claim 5 , wherein the first uplink-downlink configuration is any one uplink-downlink configuration of the below table.
Uplink-downlink
Subframe number
configuration
0
1
2
3
4
5
6
7
8
9
0
D
S
U
U
U
D
S
U
U
U
1
D
S
U
U
D
D
S
U
U
D
2
D
S
U
D
D
D
S
U
D
D
3
D
S
U
U
U
D
D
D
D
D
4
D
S
U
U
D
D
D
D
D
D
5
D
S
U
D
D
D
D
D
D
D
6
D
S
U
U
U
D
S
U
U
D
8 . The wireless device of claim 7 , wherein the second uplink-downlink configuration is uplink-downlink configuration 2 or uplink-downlink configuration 5.Join the waitlist — get patent alerts
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