Data transmission method and base station
First Claim
1. A base station, wherein the base station comprises:
- a processor, configured to determine, according to channel state information (CSI), a transmission path for forwarding first data to a first terminal such that when the processor determines that the first data needs to be forwarded by at least one small cell to the first terminal, the transmission path comprises a path from the base station to a small cell and a path from the small cell to the first terminal; and
a transmitter, configured to send, according to the transmission path determined by the processor, a first data frame to the first terminal via the at least one small cell, wherein the first data frame comprises resource assignment information and the first data, the resource assignment information comprises resource assignment information indicating resource assignment from the base station to the small cell and resource assignment from the small cell to the first terminal.
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Accused Products
Abstract
The present invention relates to a data transmission method and a base station, the method includes: determining, by a base station according to channel state information CSI, a transmission path for forwarding first data to a first terminal, where if the base station determines that the first data needs to be forwarded by at least one small cell to the first terminal, the transmission path includes a path from the base station to a small cell and a path from the small cell to the first terminal; and sending, by the base station according to the transmission path, a first data frame to the first terminal via the at least one small cell. In the present invention, a macro base station performs centralized scheduling, and performs unified encapsulation according to a scheduled transmission path, thereby effectively simplifying processing by a forwarding node and reducing a delay.
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Citations
20 Claims
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1. A base station, wherein the base station comprises:
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a processor, configured to determine, according to channel state information (CSI), a transmission path for forwarding first data to a first terminal such that when the processor determines that the first data needs to be forwarded by at least one small cell to the first terminal, the transmission path comprises a path from the base station to a small cell and a path from the small cell to the first terminal; and a transmitter, configured to send, according to the transmission path determined by the processor, a first data frame to the first terminal via the at least one small cell, wherein the first data frame comprises resource assignment information and the first data, the resource assignment information comprises resource assignment information indicating resource assignment from the base station to the small cell and resource assignment from the small cell to the first terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A small cell, wherein the small cell comprises:
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a receiver, configured to receive a first data frame sent by a previous-hop node, wherein the first data frame comprises resource assignment information and data, the data comprising at least backhaul link data, the backhaul link data comprising first data to be sent to a first terminal, the resource assignment information comprising at least backhaul data resource assignment information, and the backhaul data resource assignment information comprising resource assignment information from the small cell to the first terminal; a processor, configured to assemble a second data frame by using the backhaul link data in the first data frame received by the receiver, wherein the second data frame comprises resource assignment information and data, the data in the second data frame comprises at least one of the following;
access link data and backhaul link data, the resource assignment information in the second data frame comprises at least one of the following;access data resource assignment information and backhaul data resource assignment information, the access link data in the second data frame is data of a terminal served by the small cell in the backhaul link data in the first data frame, and the backhaul link data in the second data frame is data that needs to be forwarded by a next-hop node in the backhaul link data in the first data frame, wherein when the first terminal is a terminal served by the small cell, the first data is the access link data in the second data frame;
orwhen the first terminal is a terminal served by another small cell, the first data is the backhaul link data in the second data frame; and a transmitter, configured to send the second data frame assembled by the processor to the next-hop node or the terminal served by the small cell. - View Dependent Claims (9, 10)
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11. A data transmission method, wherein the method comprises:
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determining, by a base station according to channel state information (CSI), a transmission path for forwarding first data to a first terminal, such that when the base station determines that the first data needs to be forwarded by at least one small cell to the first terminal, the transmission path comprises a path from the base station to a small cell and a path from the small cell to the first terminal; and sending, by the base station according to the transmission path, a first data frame to the first terminal via the at least one small cell, wherein the first data frame comprises resource assignment information and the first data, the resource assignment information indicating assignment from the base station to the small cell and resource assignment from the small cell to the first terminal. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A data transmission method, wherein the method comprises:
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receiving, by a current node, a first data frame sent by a previous-hop node, wherein the first data frame comprises resource assignment information and data, the data comprising at least backhaul link data, the backhaul link data comprising first data to be sent to a first terminal, the resource assignment information comprising at least backhaul data resource assignment information, and the backhaul data resource assignment information comprising resource assignment information from the current node to the first terminal; assembling, by the current node, a second data frame by using the backhaul link data in the first data frame, wherein the second data frame comprises resource assignment information and data, the data in the second data frame comprises at least one of the following;
the access link data and the backhaul link data,the resource assignment information in the second data frame comprises at least one of the following;
access data resource assignment information and backhaul data resource assignment information, the access link data in the second data frame is data of a terminal served by the current node in the backhaul link data in the first data frame, and the backhaul link data in the second data frame is data that needs to be forwarded by a next-hop node in the backhaul link data in the first data frame, wherein if the first terminal is a terminal served by the current node, the first data is the access link data in the second data frame;
or if the first terminal is a terminal served by another node, the first data is the backhaul link data in the second data frame; andsending, by the current node, the second data frame to the next-hop node or the terminal served by the current node. - View Dependent Claims (18, 19, 20)
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Specification