CN-121986530-A - Information transmission method and device

Abstract

The embodiment of the disclosure discloses a method and a device for transmitting information. The method executed by the terminal comprises the steps of sending first uplink transmission time information, wherein the time information is used for indicating the sending time of second uplink transmission, and the first uplink transmission and the second uplink transmission carry the same data. Thus, the problem of how the network device determines the respective transmission times of multiple identical uplink transmissions is solved to a certain extent.

Inventors

• JIANG XIAOWEI

Assignees

• 北京小米移动软件有限公司

Dates

Publication Date

20260505

Application Date

20240628

Claims (20)

1. A method for transmitting information, the method comprising: And sending first uplink transmission time information, wherein the time information is used for indicating the sending time of second uplink transmission, and the first uplink transmission and the second uplink transmission bear the same data.
2. The method of claim 1, wherein the time information is carried by a medium access control element, MAC CE.
3. The method of claim 2, wherein the priority of the MAC CE is the same as the priority of the data from the uplink common control channel.
4. The method of claim 2, wherein the sending the uplink transmission and time information comprises: and sending a Media Access Control (MAC) Protocol Data Unit (PDU) containing the first uplink transmission, wherein the MAC PDU comprises the MAC CE.
5. The method of claim 1, wherein the time information is carried by a radio resource control, RRC, message.
6. The method of claim 5, wherein the RRC message is any of: RRC early data request message, connection recovery request message.
7. The method of any of claims 1-6, wherein the time information is one or more of: Sending time information of other uplink transmissions except the first uplink transmission in a plurality of uplink transmissions; And sending time information of each uplink transmission in the plurality of uplink transmissions.
8. The method of claim 7, wherein the time information comprises one or more of: The second uplink transmission corresponds to the subframe index; A subframe index difference value between the subframe index corresponding to the second uplink transmission and the subframe index corresponding to the first uplink transmission; The second uplink transmission corresponds to the time slot index; a time slot index corresponding to the second uplink transmission and a time slot index difference value between the time slot indexes corresponding to the first uplink transmission; the second uplink transmission corresponds to the OFDM symbol index; An OFDM symbol index corresponding to the second uplink transmission, and an OFDM symbol index difference value between the OFDM symbol indexes corresponding to the first uplink transmission; And the second uplink transmission corresponds to the least significant bit index of the system frame number.
9. The method of claim 7, wherein the transmission time information of the other uplink transmission is relative time information of the other uplink transmission with respect to a first uplink transmission transmitted by a first one of the plurality of uplink transmissions, or And the sending time information of the other uplink transmission is the relative time information of the other uplink transmission relative to the first uplink transmission.
10. A method for transmitting information, the method comprising: Receiving first uplink transmission and time information; determining the sending time of a second uplink transmission according to the time information, wherein the second uplink transmission and the first uplink transmission bear the same data; And performing interference cancellation on a third uplink transmission based on the first uplink transmission, wherein the third uplink transmission is received by the network equipment in the sending time of the second uplink transmission.
11. The method of claim 10, wherein the time information is carried by a medium access control element, MAC CE.
12. The method of claim 11, wherein the priority of the MAC CE is the same as the priority of the data from the uplink common control channel.
13. The method of claim 11, wherein the receiving the first uplink transmission and time information comprises: and receiving a Media Access Control (MAC) Protocol Data Unit (PDU) containing the first uplink transmission, wherein the MAC PDU comprises the MAC CE.
14. The method of claim 10, wherein the time information is carried by a radio resource control, RRC, message.
15. The method of claim 14, wherein the RRC message is any one of: RRC early data request message, connection recovery request message.
16. The method of any of claims 10-15, wherein the time information is one or more of: Sending time information of other uplink transmissions except the first uplink transmission in the plurality of uplink transmissions; and transmitting time information of each uplink transmission in the plurality of uplink transmissions.
17. The method of claim 16, wherein the time information comprises one or more of: The second uplink transmission corresponds to the subframe index; A subframe index difference value between the subframe index corresponding to the second uplink transmission and the subframe index corresponding to the first uplink transmission; The second uplink transmission corresponds to the time slot index; a time slot index corresponding to the second uplink transmission and a time slot index difference value between the time slot indexes corresponding to the first uplink transmission; the second uplink transmission corresponds to the OFDM symbol index; An OFDM symbol index corresponding to the second uplink transmission, and an OFDM symbol index difference value between the OFDM symbol indexes corresponding to the first uplink transmission; And the second uplink transmission corresponds to the least significant bit index of the system frame number.
18. The method of claim 17, wherein the transmission time information of the other uplink transmission is relative time information of the other uplink transmission with respect to a first uplink transmission transmitted by a first one of the plurality of uplink transmissions, or And the sending time information of the other uplink transmission is the relative time information of the other uplink transmission relative to the first uplink transmission.
19. A terminal, the terminal comprising: And the receiving and transmitting module is used for transmitting first uplink transmission time information, wherein the time information is used for indicating the transmission time of second uplink transmission, and the first uplink transmission and the second uplink transmission bear the same data.
20. A network device, the network device comprising: The receiving and transmitting module is used for receiving the first uplink transmission and time information; And the processing module is used for determining the sending time of the second uplink transmission according to the time information, wherein the second uplink transmission and the first uplink transmission bear the same data, and performing interference elimination on the third uplink transmission based on the first uplink transmission, wherein the third uplink transmission is received by the network equipment in the sending time of the second uplink transmission.

Description

Information transmission method and device Technical Field The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting information. Background The contention resolution diversity slotted ALOHA (contention resolution diversity slotted ALOHA, CRDSA) technique is a technique for reducing the uplink collision probability of a contention channel and improving the uplink capacity. The terminal duplicates the uplink transmission to generate a plurality of uplink transmissions, and then sends the plurality of uplink transmissions at different times, respectively. The network successfully receives any one of the uplink transmissions, and then performs interference cancellation on other receiving positions based on the received uplink transmission, so as to analyze other uplink transmissions which collide with the uplink transmission at other receiving positions. In order for the network device to perform interference cancellation, it needs to know the transmission time of each of the plurality of uplink transmissions. Disclosure of Invention The embodiment of the disclosure provides a method and a device for transmitting information. An embodiment of a first aspect of the present disclosure provides a method for transmitting information, where the method includes: And sending first uplink transmission time information, wherein the time information is used for indicating the sending time of second uplink transmission, and the first uplink transmission and the second uplink transmission carry the same data. An embodiment of a second aspect of the present disclosure provides a method for transmitting information, where the method includes: Receiving first uplink transmission and time information; Determining the sending time of a second uplink transmission according to the time information, wherein the second uplink transmission and the first uplink transmission bear the same data; And performing interference cancellation on a third uplink transmission based on the first uplink transmission, wherein the third uplink transmission is received by the network equipment in the sending time of the second uplink transmission. An embodiment of a third aspect of the present disclosure provides a terminal, where the terminal includes: And the receiving and transmitting module is used for transmitting first uplink transmission time information, wherein the time information is used for indicating the transmission time of second uplink transmission, and the first uplink transmission and the second uplink transmission bear the same data. An embodiment of a fourth aspect of the present disclosure provides a network device, including: The receiving and transmitting module is used for receiving the first uplink transmission and time information; a processing module, configured to determine a sending time of a second uplink transmission, where the second uplink transmission and the first uplink transmission carry the same data; the processing module is further configured to perform interference cancellation on a third uplink transmission based on the first uplink transmission, where the third uplink transmission is received by the network device during a sending time of the second uplink transmission. According to the scheme provided by the embodiment of the disclosure, the terminal synchronizes the time information for indicating the sending time of other uplink transmissions to the network equipment while uplink transmission is carried out to the network equipment, so that the network equipment can accurately determine the sending time of each uplink transmission, interference elimination is carried out on the interference packet generating collision, uplink capacity is improved, the situation of failure in sending uplink transmissions caused by collision is effectively avoided, and the performance of a communication system is improved. Drawings In order to more clearly illustrate the technical solutions in the embodiments or the background of the present disclosure, the following description will explain the drawings that are required to be used in the embodiments or the background of the present disclosure. Fig. 1A is a schematic architecture diagram of a communication system provided in an embodiment of the present disclosure; fig. 1B is a schematic diagram of an uplink transmission received by a network device; Fig. 2A is an interaction schematic diagram of a method for transmitting information according to an embodiment of the disclosure; Fig. 3A-3B are schematic flow diagrams of a method for transmitting information according to an embodiment of the present disclosure; Fig. 4A-4B are schematic flow diagrams of a method for transmitting information according to an embodiment of the present disclosure; Fig. 5 is a flow chart of a method for transmitting information according to an embodiment of the disclosure; fig. 6A is a schematic structural diagram