Method and apparatus for instructing to transmit data, communication device, and storage medium
AssigneeBeijing Xiaomi Mobile Software Co., Ltd.
InventorYajun Zhu
Life of this patent
Estimating the term…
Abstract
A method for instructing data transmission on an unlicensed spectrum channel, which is applied to a first communication node, includes: performing channel detection on an unlicensed channel; and in response to detecting that the unlicensed channel is idle, broadcasting first slot format indicator (SFI) information, where the first SFI information is at least used for indicating the transmission direction where the first communication node occupies the unlicensed channel to perform data transmission.
Claims19
A method for indicating data transmission on an unlicensed spectrum channel, performed by a first communication node, the method comprising:
- receiving second slot format indicator (SFI) information broadcast by a second communication node, wherein the second SFI information is at least used for indicating a transmission direction in which the second communication node occupies an unlicensed channel to perform data transmission;
- performing channel assessment on the unlicensed channel;
- assessing that the unlicensed channel is clear;
- and
- broadcasting first SFI information, wherein the first SFI information is at least used for indicating a transmission direction in which the first communication node occupies the unlicensed channel to perform data transmission;
- wherein broadcasting the first SFI information comprises:
- broadcasting the first SFI information at a time domain position determined according to a time domain position at which the second communication node broadcasts the second SFI information and an offset;
- wherein broadcasting the first SFI information at the time domain position determined according to the time domain position at which the second communication node broadcasts the second SFI information and the offset comprises:
- broadcasting the first SFI information in a time window obtained by offsetting the time domain position at which the second communication node broadcasts the second SFI information by the offset, wherein the time window comprises at least one candidate time domain position at which the first SFI information is broadcast.
A method for indicating data transmission on an unlicensed spectrum channel, performed by a second communication node, the method comprising:
- occupying the unlicensed spectrum channel;
- broadcasting second slot format indicator (SFI) information, wherein the second SFI information is at least used for indicating a transmission direction in which the second communication node occupies an unlicensed channel to perform data transmission;
- receiving first SFI information broadcast by a first communication node;
- and
- sending, according to the first SFI information, scheduling information for scheduling the first communication node to perform data transmission;
- wherein receiving the first SFI information broadcast by the first communication node comprises:
- receiving the first SFI information at a time domain position determined according to a time domain position at which the second SFI information is broadcast and an offset;
- wherein receiving the first SFI information at the time domain position determined according to the time domain position at which the second SFI information is broadcast and the offset comprises:
- receiving the first SFI information in a time window obtained by offsetting the time domain position at which the second SFI information is broadcast by the offset, wherein the time window comprises at least one candidate time domain position at which the first SFI information is broadcast.
A method for indicating data transmission on an unlicensed spectrum channel, performed by a third communication node, the method comprising:
- receiving first slot format indicator (SFI) information broadcast by a first communication node, wherein the first SFI information is at least used for indicating a transmission direction in which the first communication node occupies an unlicensed channel to perform data transmission, and the first communication node and the third communication node belong to different cells;
- and
- performing, based on the first SFI information, a backoff operation;
- wherein the first SFI information is broadcast, at a time domain position determined according to a time domain position at which a second communication node broadcasts second SFI information and an offset, by the first communication node, and the second SFI information is at least used for indicating a transmission direction in which the second communication node occupies the unlicensed channel to perform data transmission;
- and
- wherein the first SFI information is broadcast in a time window obtained by offsetting the time domain position at which the second communication node broadcasts the second SFI information by the offset, wherein the time window comprises at least one candidate time domain position at which the first SFI information is broadcast.
Dependencies are inferred from the claim text.