Method for Relays within Wireless Communication Systems
First Claim
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1. A wireless communication entity, comprising:
- a transceiver;
a controller coupled to the transceiver, the controller configured to cause the transceiver to transmit in an UL control resource in a group of sub-frames configured according to a predetermined schedule,the controller configured to detect a indicator message in a downlink control transmission, allocated to the wireless communication entity;
the controller configured to temporarily modify the transmission in the UL control resource based on the indicator message contrary to the predetermined schedule.
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Abstract
A relay design backward compatible with existing wireless communication networks. The invention provides details of apparatus and methods to enable operation of inband relays. Using a grant-based inhibit mechanism, a Relay and an eNB can efficiently cooperate to improve the performance by allowing one of either UE or the Relay to transmit on the uplink. Similarly, the UE overrides any pre-determined schedule (i.e., absence of Reference Signals) by searching for a scheduling grant and if the UE find the scheduling grant, the UE can assume that the Relay has overridden the pre-determined schedule temporarily.
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Citations
15 Claims
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1. A wireless communication entity, comprising:
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a transceiver; a controller coupled to the transceiver, the controller configured to cause the transceiver to transmit in an UL control resource in a group of sub-frames configured according to a predetermined schedule, the controller configured to detect a indicator message in a downlink control transmission, allocated to the wireless communication entity; the controller configured to temporarily modify the transmission in the UL control resource based on the indicator message contrary to the predetermined schedule. - View Dependent Claims (2, 3, 4, 5)
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6. A method in a wireless communication entity that communicates in a wireless communication network, comprising:
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transmitting in an UL control resource in a group of sub-frames configured according to a predetermined schedule; receiving a DL control transmission; detecting a indicator message allocated to the wireless communication entity, the indicator message is in the DL control transmission; temporarily modifying the transmission on the UL control resource based on the indicator message contrary to the predetermined schedule. - View Dependent Claims (7, 8)
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9. A wireless communication entity comprising:
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a transceiver; a controller coupled to the transceiver, the controller configured to decode a control resource of a blank sub-frame in a group of sub-frames for control information after receiving a DL control transmission indicating that the sub-frame is blank, the controller configured to detect a scheduling message in the control resource of the blank sub-frame. - View Dependent Claims (10, 11, 13, 14, 15)
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12. A method in a wireless communication entity that communicates in a wireless communication network, comprising:
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transmitting in an UL subframe in a group of sub-frames configured according to a predetermined schedule; receiving a DL control transmission; detecting a scheduling grant allocated to all wireless communication entities, the scheduling message is in the DL control transmission; disabling all transmissions on the UL subframe based on the scheduling message contrary to the predetermined schedule.
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Specification