Communication system
AssigneeNEC Corporation
InventorsYassin Aden Awad, Ayesha Ijaz, Robert Arnott
Life of this patent
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Abstract
A communication system is disclosed in which a communication device transmits, to a base station and using communication resources that may be used for grant-free uplink communications, uplink data and information from which the communication device can be identified, wherein the information from which the communication device can be identified comprises a Cyclic Redundancy Check (CRC) value that is encoded with identity information identifying the communication device (for example, a C-RNTI of the communication device).
Claims6
A user equipment (UE) comprising:
- at least one memory storing instructions;
- and
- at least one processor configured lo process the instructions to:
- receive, from a base station, a Radio Resource Control (RRC) message including at least one parameter for transmitting uplink data without a dynamic grant;
- configure:
- i) a first radio network temporary identifier (RNTI) for uplink data transmitted without the scheduling grant;
- and
- ii) a second RNTI for uplink data transmitted with the scheduling grant;
- determine a Hybrid Automatic Repeat Request (HARQ) process identifier corresponding to a transmission without a dynamic grant based on a resource in a predetermined radio frame and the at least one parameter, in a case where the transmission without a dynamic grant is available based on a timing of the transmission without a dynamic grant and a timing of a transmission with a dynamic grant;
- transmit the uplink data to the base station, via the transmissions without a dynamic grant;
- retransmit, to the base station, the uplink data using a resource scheduled by an uplink grant in downlink control information corresponding to the first RNTI;
- and
- transmit and retransmit, to the base station, another uplink data using a resource scheduled by an uplink grant in downlink control information corresponding to the second RNTI.
A method for a user equipment (UE), the method comprising:
- receiving, from a base station, a Radio Resource Control (RRC) message including at least one parameter for transmitting uplink data without a dynamic grant;
- configuring:
- i) a first radio network temporary identifier (RNTI) for transmitting uplink data without a dynamic grant;
- and
- ii) a second RNTI for transmitting uplink data with a dynamic grant;
- determining a Hybrid Automatic Repeat Request (HARQ) process identifier corresponding to a transmission without a dynamic grant based on a resource in a predetermined radio frame and at least one parameter, in a case where the transmission without a dynamic grant is available based on a timing of the transmission without a dynamic grant and a timing of a transmission with a dynamic grant;
- transmitting the uplink data to the base station, via the transmission without a dynamic grant;
- retransmitting, to the base station, the uplink data using a resource scheduled by an uplink grant in downlink control information corresponding to the first RNTI;
- and
- transmitting and retransmitting, to the base station, another uplink data using a resource scheduled by an uplink grant in downlink control information corresponding to the second RNTI.
Dependencies are inferred from the claim text.