Methods for channel transmission and terminal device

1 . A method for channel transmission, comprising:

receiving, by a terminal device, first configuration information,

wherein the first configuration information is used for determining a target Search Space (SS) where the terminal device receives a downlink channel, the downlink channel being transmitted after a contention conflict is successfully resolved in a Random Access-Small Data Transmission (RA-SDT), and the target SS being used for scheduling a subsequent transmission of the RA-SDT, and

wherein the first configuration information comprises an SS configuration list, the SS configuration list comprising configuration information of at least one Common Search Space (CSS); and

wherein the method further comprises:

receiving, by the terminal device, first indication information, the first indication information being carried in a Radio Resource Control (RRC) Release message transmitted by a last serving cell of the terminal device,

wherein the first indication information is used for determining a first index value, and

wherein the first indication information comprises an Identity-Radio Network Temporary Identifier (I-RNTI), and wherein the first index value is obtained by the I-RNTI performing a modulus operation on a first numerical value, and the first numerical value is a number of configuration information of CSSs in the SS configuration list in the first configuration information;

wherein the method further comprises:

searching, by the terminal device, the SS configuration list in the first configuration information for configuration information of a CSS corresponding to the first index value, and determining that the CSS indicated by the configuration information of the CSS corresponding to the first index value is the target SS.

2 . The method of claim 1 , further comprising:

receiving, by the terminal device, the downlink channel based on the target SS, in response to successfully resolving the contention conflict in the RA-SDT.

3 . The method of claim 2 , further comprising:

terminating, by the terminal device, at least one of reception of the downlink channel or the RA-SDT, in response to receiving a first RRC message.

4 . The method of claim 3 , wherein the first RRC message comprises at least one of:

a RRC Resume message;

a RRC Release message; or

a RRC Setup message.

5 . The method of claim 1 , wherein at least one of the following applies:

the downlink channel is scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI); or

the first configuration information is carried in at least one of a system broadcast message or dedicated signaling.

6 . A network device, comprising:

a processor; and

a memory configured to store a computer program executable by the processor,

wherein the processor is configured to run the computer program, to cause the network device to:

send first configuration information to a terminal device,

wherein the first configuration information is used by the terminal device to determine a target Search Space (SS) where a downlink channel is received, the downlink channel being transmitted after a contention conflict is successfully resolved in a Random Access-Small Data Transmission (RA-SDT), and the target SS being used for scheduling a subsequent transmission of the RA-SDT, and

wherein the first configuration information comprises an SS configuration list, the SS configuration list comprising configuration information of at least one Common Search Space (CSS); and

wherein the processor is further configured to run the computer program, to cause the network device to send first indication information to the terminal device, the first indication information being carried in a Radio Resource Control (RRC) Release message transmitted by a last serving cell of the terminal device,

wherein the first indication information is used for determining a first index value, and

wherein the first indication information comprises an Identity-Radio Network Temporary Identifier (I-RNTI), and wherein the first index value is obtained by the I-RNTI performing a modulus operation on a first numerical value, and the first numerical value is a number of configuration information of CSSs in the SS configuration list in the first configuration information, and

wherein the SS configuration list in the first configuration information is searched for configuration information of a CSS corresponding to the first index value, and the CSS indicated by the configuration information of the CSS corresponding to the first index value is determined to be the target SS.

7 . The network device of claim 6 , wherein at least one of the following applies:

the downlink channel is scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI); or

the first configuration information is carried in at least one of a system broadcast message or dedicated signaling.

8 . A terminal device, comprising:

a processor; and

a memory configured to store a computer program executable by the processor,

wherein the processor is configured to run the computer program, to cause the terminal device to receive first configuration information,

wherein the first configuration information is used for determining a target Search Space (SS) where the terminal device receives a downlink channel, the downlink channel being transmitted after a contention conflict is successfully resolved in a Random Access-Small Data Transmission (RA-SDT), and the target SS being used for scheduling a subsequent transmission of the RA-SDT, and

wherein the first configuration information comprises an SS configuration list, the SS configuration list comprising configuration information of at least one Common Search Space (CSS); and

wherein the processor is further configured to run the computer program, to cause the terminal device to receive first indication information, the first indication information being carried in a Radio Resource Control (RRC) Release message transmitted by a last serving cell of the terminal device,

wherein the first indication information is used for determining a first index value, and

wherein the first indication information comprises an Identity-Radio Network Temporary Identifier (I-RNTI), and wherein the first index value is obtained by the I-RNTI performing a modulus operation on a first numerical value, and the first numerical value is a number of configuration information of CSSs in the SS configuration list in the first configuration information;

wherein the processor is further configured to run the computer program, to cause the terminal device to:

search the SS configuration list in the first configuration information for configuration information of a CSS corresponding to the first index value, and determine that the CSS indicated by the configuration information of the CSS corresponding to the first index value is the target SS.

9 . The terminal device of claim 8 , wherein the processor is further configured to run the computer program, to cause the terminal device to perform operations comprising:

receiving the downlink channel based on the target SS, in response to successfully resolving the contention conflict in the RA-SDT.

10 . The terminal device of claim 9 , wherein the processor is further configured to run the computer program, to cause the terminal device to perform operations comprising:

terminating at least one of reception of the downlink channel or the RA-SDT, in response to receiving a first RRC message.

11 . The terminal device of claim 10 , wherein the first RRC message comprises at least one of:

a RRC Resume message;

a RRC Release message; or

a RRC Setup message.

12 . The terminal device of claim 8 , wherein at least one of the following applies:

the downlink channel is scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI); or

the first configuration information is carried in at least one of a system broadcast message or dedicated signaling.