Data transmission method and apparatus
地域：
Guangdong
摘要
Disclosed are a data transmission method and apparatus, which can improve the performance of a system. The method comprises: a terminal device receiving indication information sent by a network device, the indication information being used to indicate a first downlink scheduling time domain resource in a first time-frequency resource region, wherein frequency domain resources comprised in the first time-frequency resource region are a part of a system bandwidth; and the terminal device receiving, on a first downlink data time domain resource, data sent by the network device according to the indication information.
說明書
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The present application is the U.S. national phase application of PCT Application No. PCT/CN2016/111836 filed on Dec. 23, 2016, the disclosure of which is incorporated herein in its entirety by reference.
Embodiments of the disclosure relate to the field of communication, and more particularly to a data transmission method and device.
In an existing wireless communication system, for example, a Long Term Evolution (LTE) system, a sub-frame is taken as a scheduling unit. As illustrated in
A future wireless communication system (for example, 5th-Generation (5G)) focuses on supporting higher system performance, and is required to support various service types, different deployment scenarios and a wider spectral range. How to improve system performance is a research hot spot in this field.
The embodiments of the disclosure provide a data transmission method and device, which may improve system performance.
權利要求
The invention claimed is:1. A method for data transmission, comprising:receiving, by a terminal device, indication information from a network device, the indication information indicating a first downlink scheduling time-domain resource in a first time-frequency resource region, and a frequency-domain resource in the first time-frequency resource region being a part of a system bandwidth; and receiving, by the terminal device, data from the network device on the first downlink data time-domain resource according to the indication information; wherein the first downlink scheduling time-domain resource is different from a second downlink scheduling time-domain resource in a second time-frequency resource region, and the first time-frequency resource region and the second time-frequency resource region correspond to a same time-domain resource and correspond to different frequency-domain resources respectively; and wherein that the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region in that: a starting symbol of the first downlink scheduling time-domain resource is different from a starting symbol of the second downlink scheduling time-domain resource; and/or a time-domain length of the first downlink scheduling time-domain resource is different from a time-domain length of the second downlink scheduling time-domain resource. 2. The method of claim 1 , wherein a starting symbol of the first downlink data time-domain resource is immediately next to an ending symbol of a control channel resource in the first time-frequency resource region; ora starting symbol of the first downlink data time-domain resource is a spaced from the ending symbol of the control channel resource in the first time-frequency resource region by at least one symbol. 3. The method of claim 1 , wherein receiving, by the terminal device, the indication information from the network device comprises:receiving, by the terminal device, high-layer signaling from the network device, the high-layer signaling carrying the indication information; or receiving, by the terminal device, a physical-layer common signal from the network device, the physical-layer common signal carrying the indication information; or receiving, by the terminal device, a User Equipment (UE)-specific control signal from the network device, the UE-specific control signal carrying the indication information. 4. The method of claim 1 , wherein the indication information is configured to indicate at least one of a starting symbol, time-domain length or ending symbol of the first downlink data time-domain resource. 5. A data transmission method, comprising:determining, by a network device, a first downlink scheduling time-domain resource in a first time-frequency resource region, a frequency-domain resource in the first time-frequency resource region being a part of a system bandwidth; and transmitting, by the network device, indication information to a terminal device, the indication information indicating the first downlink scheduling time-domain resource; wherein the first downlink scheduling time-domain resource is different from a second downlink scheduling time-domain resource in a second time-frequency resource region, and the first time-frequency resource region and the second time-frequency resource region correspond to a same time-domain resource and correspond to different frequency-domain resources respectively; and wherein that the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region in that: a starting symbol of the first downlink scheduling time-domain resource is different from a starting symbol of the second downlink scheduling time-domain resource; and/or a time-domain length of the first downlink scheduling time-domain resource is different from a time-domain length of the second downlink scheduling time-domain resource. 6. The method of claim 5 , wherein a starting symbol of the first downlink data time-domain resource is immediately next to an ending symbol of a control channel resource in the first time-frequency resource region; orthe starting symbol of the first downlink data time-domain resource is a spaced from an ending symbol of a control channel resource in the first time-frequency resource region by at least one symbol. 7. The method of claim 5 , wherein transmitting, by the network device, the indication information to the terminal device comprises:transmitting, by the network device, high-layer signaling, the high-layer signaling carrying the indication information; or transmitting, by the network device, a physical-layer common signal, the physical-layer common signal carrying the indication information; or transmitting, by the network device, a User Equipment (UE)-specific control signal to the terminal device, the UE-specific control signal carrying the indication information. 8. The method of claim 5 , wherein the indication information is configured to indicate at least one of a starting symbol, time-domain length or ending symbol of the first downlink data time-domain resource. 9. A device for data transmission, comprising:a transceiver, configured to receive indication information from a network device, the indication information indicating a first downlink scheduling time-domain resource in a first time-frequency resource region and a frequency-domain resource in the first time-frequency resource region being a part of a system bandwidth; and a processor, configured to determine the first downlink scheduling time-domain resource according to the indication information received by the transceiver, wherein the transceiver is further configured to receive data from the network device on the first downlink data time-domain resource determined by the processor; wherein the first downlink scheduling time-domain resource is different from a second downlink scheduling time-domain resource in a second time-frequency resource region, and the first time-frequency resource region and the second time-frequency resource region correspond to a same time-domain resource and correspond to different frequency-domain resources respectively; and wherein that the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region in that: a starting symbol of the first downlink scheduling time-domain resource is different from a starting symbol of the second downlink scheduling time-domain resource; and/or a time-domain length of the first downlink scheduling time-domain resource is different from a time-domain length of the second downlink scheduling time-domain resource. 10. The device of claim 9 , wherein a starting symbol of the first downlink data time-domain resource is immediately next to an ending symbol of a control channel resource in the first time-frequency resource region; ora starting symbol of the first downlink data time-domain resource is a spaced from an ending symbol of the control channel resource in the first time-frequency resource region by at least one symbol. 11. The device of claim 9 , wherein the transceiver is specifically configured to receive high-layer signaling from the network device, the high-layer signaling or a physical-layer common signal carrying the indication information; orthe transceiver is specifically configured to receive the physical-layer signal from the network device, the physical-layer common signal carrying the indication information; or the transceiver is specifically configured to receive a User Equipment (UE)-specific control signal from the network device, the UE-specific control signal carrying the indication information. 12. The device of claim 9 , wherein the first time-frequency resource region corresponds to a scheduling unit in time-domain. 13. The device of claim 12 , wherein the scheduling unit corresponds to one or more subframes, time slots or mini-slots. 14. The device of claim 9 , wherein the terminal device is configured by the network device to comprise a plurality of time-frequency resource regions comprising the first time-frequency resource region. 15. The device of claim 14 , wherein each of the plurality of time-frequency resource regions has a different subcarrier spacing. 16. The device of claim 14 , wherein each of the plurality of time-frequency resource regions corresponds to a different frequency band within a same time-domain resource. 17. The device of claim 9 , wherein the indication information is configured to indicate at least one of a starting symbol, time-domain length or ending symbol of the first downlink data time-domain resource. 18. A device for data transmission, comprising:a processor, configured to determine a first downlink scheduling time-domain resource in a first time-frequency resource region, a frequency-domain resource in the first time-frequency resource region being a part of a system bandwidth; and a transceiver, configured to transmit indication information to a terminal device, the indication information indicating the first uplink scheduling time-domain resource determined by the processor; wherein the first downlink scheduling time-domain resource is different from a second downlink scheduling time-domain resource in a second time-frequency resource region, and the first time-frequency resource region and the second time-frequency resource region correspond to a same time-domain resource and correspond to different frequency-domain resources respectively; and wherein that the first downlink scheduling time-domain resource is different from the second downlink scheduling time-domain resource in the second time-frequency resource region in that: a starting symbol of the first downlink scheduling time-domain resource is different from a starting symbol of the second downlink scheduling time-domain resource; and/or a time-domain length of the first downlink scheduling time-domain resource is different from a time-domain length of the second downlink scheduling time-domain resource. 19. The device of claim 18 , wherein a starting symbol of the first downlink data time-domain resource is immediately next to an ending symbol of a control channel resource in the first time-frequency resource region; orthe starting symbol of the first downlink data time-domain resource is a spaced from the ending symbol of the control channel resource in the first time-frequency resource region by at least one symbol. 20. The device of claim 18 , wherein the transceiver is specifically configured to transmit high-layer signaling, the high-layer signaling carrying the indication information; orthe transceiver is specifically configured to transmit a physical-layer signal, the physical-layer common signal carrying the indication information; or the transceiver is specifically configured to transmit a User Equipment (UE)-specific control signal to the terminal device, the UE-specific control signal carrying the indication information. 21. The device of claim 18 , wherein the first downlink data time-domain resource comprises a plurality of mini-slots, and the indication information is configured to indicate a total length of the plurality of mini-slots. 22. The device of claim 18 , wherein the indication information is configured to indicate at least one of a starting symbol, time-domain length or ending symbol of the first downlink data time-domain resource. 23. A device for data transmission, comprising:a processor, configured to determine a first downlink scheduling time-domain resource in a first time-frequency resource region, a frequency-domain resource in the first time-frequency resource region being a part of a system bandwidth; and a transceiver, configured to transmit indication information to a terminal device, the indication information indicating the first uplink scheduling time-domain resource determined by the processor; wherein the processor is specifically configured to, responsive to that a network device configures a plurality of time-frequency resource regions comprising the first time-frequency resource region for the terminal device and the plurality of time-frequency resource regions having different subcarrier spacings, determine an ending moment of a third downlink time-domain resource in a third time-frequency resource region as an ending moment of the first downlink scheduling time-domain resource, the third time-frequency resource region being the time-frequency resource region with a minimum subcarrier spacing in the plurality of time-frequency resource regions; and the indication information comprises information about the third downlink scheduling time-domain resource.
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