Data throughput for cell-edge users in a LTE network using down-link repeaters and up link HARQ relays
First Claim
1. A wireless communication system, comprising:
- a base station configured for communication within a cell;
an up-link relay;
a down-link repeater co-located with the up-link relay;
a donor antenna coupled to the output of the up-link relay and further coupled to the input of the down-link repeater; and
,a service antenna coupled to the input of the up-link relay and further coupled to the output of the down-link repeater,wherein the up-link relay only receives up-link signals, decodes the received up-link signals, recodes the decoded up-link signals, and transmits the recoded up-link signals, andwherein the down-link repeater only receives down-link signals, amplifies the received down-link signals, and re-transmits the amplified down-link signals.
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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
19 Claims
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1. A wireless communication system, comprising:
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a base station configured for communication within a cell; an up-link relay; a down-link repeater co-located with the up-link relay; a donor antenna coupled to the output of the up-link relay and further coupled to the input of the down-link repeater; and
,a service antenna coupled to the input of the up-link relay and further coupled to the output of the down-link repeater, wherein the up-link relay only receives up-link signals, decodes the received up-link signals, recodes the decoded up-link signals, and transmits the recoded up-link signals, and wherein the down-link repeater only receives down-link signals, amplifies the received down-link signals, and re-transmits the amplified down-link signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for wireless communication in a network, the network having a base station, user equipment, and a co-located up-link relay and down-link repeater, comprising:
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transmitting down-link signals from a base station; receiving the down-link signals transmitted from the base station by a down-link repeater via a donor antenna; transmitting the down-link signals from the repeater via a service antenna; receiving the down-link signals by the user equipment; transmitting up-link signals by the user equipment; receiving the up-link signals transmitted from the user equipment by an up-link relay via the service antenna; transmitting the up-link signals from the up-link relay via the donor antenna; and
,receiving the up-link signals by the base station, wherein the up-link relay only receives up-link signals, decodes the received up-link signals, recodes the decoded up-link signals, and transmits the recoded up-link signals, and wherein the down-link repeater only receives down-link signals, amplifies the received down-link signals, and re-transmits the amplified down-link signals. - View Dependent Claims (12, 13, 14, 15)
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16. A method for wireless communication in a network, the network having a base station, user equipment, and a co-located up-link relay and down-link repeater, comprising:
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transmitting down-link signals from a base station; receiving the down-link signals by a down-link repeater via a donor antenna;
amplifying the down-link signals by a down-link repeater;transmitting the amplified down-linked signals to a user equipment via a service antenna; receiving the amplified down-link signals by the user equipment; transmitting up-link signals from the user equipment; receiving the up-link signals transmitted by the user equipment by an up-link relay via the service antenna; decoding the up-link signals; re-encoding the decoded up-link signals; transmitting the re-encoded up-link, signals to a base station via the donor antenna; and
,receiving the up-link signals by the base station, wherein the up-link relay only receives up-link signals, decodes the received up-link signals, recodes the decoded up-link signals, and transmits the recoded up-link signals, and wherein the down-link repeater only receives down-link signals, amplifies the received down-link signals, and re-transmits the amplified down-link signals. - View Dependent Claims (17, 18, 19)
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Specification