Improving data throughput for cell-edge users in an LTE network#
First Claim
1. An apparatus of a relay node (RN), comprising:
- processing circuitry configured to;
decode a control channel to obtain control information, the control information providing an indication as to what subframes can be used by the RN for purposes of reception and transmission of downlink or uplink data, and re-transmission to a user equipment (UE);
decode a downlink transmission from an evolved Node B (eNB), the downlink transmission received during a first plurality of subframes; and
encode the downlink transmissions from the eNB for retransmission to the UE during a second plurality of subframes,wherein the first and second plurality of subframes are configured based on the indication provided in the control information, and wherein the first plurality of subframes are time multiplexed with the second plurality of subframes; and
memory coupled to the processing circuitry and configured to store the control information.
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Accused Products
Abstract
A combination of repeaters and relays is used to improve the data throughput for user equipment (“UE”) near the cell edge in a LTE network. Amplify-and-forward repeaters and decode-and-forward relays enhance the down-link and up-link, respectively. Relay assistance on the up-link occurs when the evolved Node B (“eNB”) requests a retransmission (HARQ) from the UE at which point the UE and relay transmit simultaneously in a cooperative fashion. The quality of the up-link signal received by the eNB is improved due to a favorable channel through the relay. An analysis shows that relay assistance improves the throughput for a cell-edge user when the average delay per data transport block is allowed to increase.
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Citations
24 Claims
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1. An apparatus of a relay node (RN), comprising:
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processing circuitry configured to; decode a control channel to obtain control information, the control information providing an indication as to what subframes can be used by the RN for purposes of reception and transmission of downlink or uplink data, and re-transmission to a user equipment (UE); decode a downlink transmission from an evolved Node B (eNB), the downlink transmission received during a first plurality of subframes; and encode the downlink transmissions from the eNB for retransmission to the UE during a second plurality of subframes, wherein the first and second plurality of subframes are configured based on the indication provided in the control information, and wherein the first plurality of subframes are time multiplexed with the second plurality of subframes; and memory coupled to the processing circuitry and configured to store the control information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A non-transitory computer-readable medium comprising instructions that, when executed on processing circuitry of a relay node (RN), cause the RN to:
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decode a control channel to obtain control information, the control information providing an indication as to what subframes can be used by the RN for purposes of reception and transmission of downlink or uplink data, and re-transmission to a user equipment (LIE); receive downlink transmissions from an evolved Node B (eNB) during a first plurality of subframes; and retransmit the downlink transmissions from the eNB to the UE during a second plurality of subframes, wherein the first and second plurality of subframes are configured based on the indication provided in the control information; and
wherein the first plurality of subframes are time multiplexed with the second plurality of subframes. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for relay node (RN) operation, comprising:
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demodulating a control channel to obtain control information, the control information providing an indication of at least a first plurality of subframes and a second plurality of subframes that can be used by the RN for purposes of reception and transmission of downlink or uplink data, and re-transmission to a user equipment (UE); receiving downlink transmissions from the eNB during the first plurality of subframes; configuring the second plurality of subframes as multimedia broadcast single frequency network (MBSFN) subframes; and retransmitting the downlink transmission from the eNB to the UE during the MBSFN subframes. - View Dependent Claims (22, 23, 24)
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Specification