Method and apparatus for detecting user data of activated user using pilot and data in a grant-free wireless communication system
AssigneeKorea University Research and Business Foundation
InventorsChung Gu Kang, Min-Sig Han
Life of this patent
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Abstract
A method performed by a base station of a wireless communication system including: a step to transmit a codebook allocated to individual user terminals for data transmission; a step to receive a pilot and data from the user terminals; a step to generate an active user information based on the data; a step to detect an active user terminal among the user terminals based on the pilot and the active user information; a step to generate a channel estimation information related to the active user terminal; and a step to detect the data of the active user terminal based on the channel estimation information.
Claims16
A method performed by a base station in a wireless communication system, comprising:
- transmitting a codebook allocated for data transmission to each of multiple user terminals;
- receiving a pilot and data from one or more user terminals among the multiple user terminals;
- generating active user information based on the data received from the one or more user terminals;
- detecting an active user terminal among the multiple user terminals based on the pilot and the active user information;
- generating channel estimation information related to the active user terminal;
- and
- detecting the data of the active user terminal based on the channel estimation information,
- wherein the method further comprises transmitting information indicating a length of the data to the one or more user terminals, and
- wherein transmitting the information indicating the length of the data comprises either transmitting the information indicating the length of the data in response to a data length change request received from the one or more user terminals or transmitting the information indicating the length of the data when a pre-set condition is satisfied.
A method performed by a user terminal in a wireless communication system, comprising:
- receiving a codebook allocated for data transmission from a base station;
- generating data based on the codebook;
- selecting or generating a pilot;
- and
- transmitting the pilot and the data to the base station,
- wherein the user terminal is detected as an active user terminal among multiple user terminals based on the pilot and active user information generated based on the data,
- wherein the method further comprises receiving information indicating a length of the data from the base station, and
- wherein receiving the information indicating the length of the data comprises either receiving the information indicating the length of the data from the base station in response to a data length change request sent from the user terminal or receiving the information indicating the length of the data when a pre-set condition is satisfied.
A wireless communication system, comprising:
- a base station including a transceiver and one or more processors operatively connected to the transceiver;
- and
- a user terminal including a transceiver and one or more processors operatively connected to the transceiver;
- wherein the one or more processors of the base station are configured to:
- transmit a codebook allocated for data transmission to each of a plurality of user terminals,
- receive a pilot and data from one or more user terminals among the plurality of user terminals,
- generate active user information based on the data,
- detect an active user terminal among the plurality of user terminals based on the pilot and the active user information,
- generate channel estimation information related to the active user terminal, and
- detect the data of the active user terminal based on the channel estimation information,
- wherein the one or more processors of the base station are further configured to transmit information indicating a length of the data to the one or more user terminals, and
- wherein transmitting the information indicating the length of the data comprises either transmitting the information indicating the length of the data based on a data length change request received from the one or more user terminals or transmitting the information indicating the length of the data when a pre-set condition is satisfied.
Dependencies are inferred from the claim text.