Patent ID: 11917572
Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A transmission delay indication method, comprising:
receiving, by a terminal, a common transmission delay sent by a network device, wherein the common transmission delay is configured to determine a transmission timing between the network device and the terminal in at least one cell; and
determining, by the terminal, the transmission timing between the terminal and the network device according to the common transmission delay;
wherein the determining, by the terminal, the transmission timing between the terminal and the network device according to the common transmission delay, comprises one of the following schemes:
scheme 1:
determining, by the terminal, a starting time and a duration of a random access response (RAR) window of the terminal according to the common transmission delay, wherein the starting time of the RAR window is a moment after delaying a sending moment of a random access preamble sent by the terminal by at least a reference RTT time length;
wherein the common transmission delay comprises at least two of the reference RTT, the maximum RTT, or the difference value between the maximum RTT and the reference RTT of data transmission, and the reference RTT, the maximum RTT, and the difference value between the maximum RTT and the reference RTT configured to determine the starting time and the duration of the RAR window by the terminal are determined by the terminal from delay information contained in the common transmission delay; or at least one of the reference RTT and the maximum RTT configured to determine the starting time and the duration of the RAR window by the terminal is determined by the terminal according to delay information contained in the common transmission delay;
scheme 2:
determining, by the terminal, a starting time and a duration of a ra-ContentionResolutionTimer of the terminal according to the common transmission delay, wherein the starting time of the ra-ContentionResolutionTimer is a moment after delaying a sending moment of a Msg3 sent by the terminal by at least a reference RTT time length;
wherein the common transmission delay comprises at least two of the reference RTT, the maximum RTT, or the difference value between the maximum RTT and the reference RTT of data transmission, and the reference RTT, the maximum RTT, and the difference value between the maximum RTT and the reference RTT configured to determine a starting time and a duration of the ra-ContentionResolutionTimer by the terminal are determined by the terminal from delay information contained in the common transmission delay; or at least one of the reference RTT and the maximum RTT configured to determine the starting time and the duration of the ra-ContentionResolutionTimer by the terminal is determined by the terminal according to delay information contained in the common transmission delay;
scheme 3:
updating, by the terminal, at least one of a first time interval and a second time interval configured to perform hybrid automatic retransmission reQuest (HARQ) transmission scheduling according to the common transmission delay,
wherein an updated first time interval is a sum of the first time interval configured to the terminal and a third offset, an updated second time interval is a sum of the second time interval configured to the terminal and the third offset, and the third offset is equal to a difference value obtained by subtracting a reference RTT from a maximum RTT of data transmission or equal to the maximum RTT;
the first time interval is a transmission time interval between a physical downlink shared channel (PDSCH) and a physical uplink control channel (PUCCH), and the second time interval is a transmission time interval between a physical downlink control channel (PDCCH) and a physical uplink shared channel (PUSCH); and
the common transmission delay comprises at least two of the reference RTT, the maximum RTT, or the difference value between the maximum RTT and the reference RTT of data transmission, and the reference RTT, the maximum RTT, and the difference value between the maximum RTT and the reference RTT configured to update the first time interval and the second time interval by the terminal are determined by the terminal from delay information contained in the common transmission delay; or at least one of the reference RTT and the maximum RTT configured to update the first time interval and the second time interval by the terminal is determined by the terminal according to delay information contained in the common transmission delay.