CN-122002614-A - Communication method and communication device

Abstract

The application provides a communication method and a communication device, in the method, after a terminal device starts a first timer, second messages sent subsequently carry information for determining a first RNTI, and the running duration of the first timer is prolonged, so that competition resolving messages corresponding to the second subsequent messages can be monitored through the first timer, and the efficiency of receiving the competition resolving messages is improved.

Inventors

• WANG FANFAN
• HU XINGXING

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20241108

Claims (20)

1. 1. A communication method, applied to a terminal device, comprising: transmitting a first message, the first message including first data and first information for contention resolution; Starting a first timer, wherein the first timer is used for monitoring a contention resolution message scrambled by a first Radio Network Temporary Identifier (RNTI), the first RNTI is determined according to a Physical Uplink Shared Channel (PUSCH) time used for sending the first message, and the running time of the first timer reaches a first time and exceeds a first time; transmitting N times of second messages, wherein the second messages comprise the first data and second information for contention resolution, and the second information is determined according to the PUSCH (physical uplink shared channel) time used for transmitting the first messages; and when the second message is sent for the ith time, determining that the running time length of the first timer exceeds a second time length, wherein the second time length is longer than the first time length, the difference value between the second time length and the first time length is equal to the time length of a time interval between the sending of the second message for the ith time and the sending of the first message, i is an integer, and i is E [1, N ].
2. 2. The method according to claim 1, wherein the method further comprises: And when the second message is sent for the (n+1) th time, determining that the operation time length of the first timer exceeds a third time length, wherein the third time length is longer than the second time length, and the difference value between the third time length and the second time length is equal to the time length of the time interval between the (i) th time of sending the second message and the (n+1) th time of sending the second message.
3. 3. The method according to claim 1 or 2, characterized in that the first information comprises an identity of the terminal device, or comprises a parameter of a PUSCH occasion used for transmitting the first message, or comprises the first RNTI.
4. 4. A method according to any of claims 1 to 3, characterized in that the second information comprises parameters of PUSCH occasions for transmitting the first message or comprises the first RNTI.
5. 5. The method according to any one of claims 1 to 4, wherein prior to sending the first message, the method further comprises: Transmitting a third message M times, the third message including the first data and third information for contention resolution; when the third message is sent for the j th time, starting a j th timer, wherein the j th timer is used for monitoring a contention resolution message scrambled by a j th RNTI, and the j th RNTI is determined according to a PUSCH (physical uplink shared channel) time used for sending the third message for the j th time; And when the third message is sent for the j+1th time, starting a j+1th timer, wherein the j+1th time is used for monitoring a contention resolution message scrambled by the j+1th RNTI, the j+1th RNTI is determined according to the PUSCH time used for sending the third message for the j+1th time, j is an integer, and j E [1, M-1].
6. 6. The method of claim 5, wherein when a contention resolution message is received, if the j-th timer and the j+1-th timer are both running The method further comprises the steps of: Monitoring the contention resolution message through the jth RNTI, or And if the monitoring of the contention resolution message is unsuccessful through the j-th RNTI, monitoring the contention resolution message through the j+1th RNTI.
7. 7. The method according to any one of claims 1 to 4, wherein prior to sending the first message, the method further comprises: Transmitting a third message including the first data and third information for contention resolution; and starting a second timer, wherein the second timer is used for monitoring a contention resolution message scrambled by a second RNTI, and the second RNTI is determined according to a PUSCH (physical uplink shared channel) occasion used for sending the third message.
8. 8. The method of claim 7, wherein when a contention resolution message is received, if both the first timer and the second timer are running The method further comprises the steps of: Monitoring the contention resolution message through the second RNTI, or And if the monitoring of the contention resolution message is unsuccessful through the second RNTI, the monitoring of the contention resolution message is performed through the first RNTI.
9. 9. The method according to any of claims 5 to 8, wherein the third information comprises an identity of the terminal device, or comprises a parameter of a PUSCH occasion used for transmitting the third message, or comprises the RNTI determined from the parameter of the PUSCH occasion used for transmitting the third message.
10. 10. The method according to any one of claims 1 to 9, wherein prior to the ith transmission of the second message, the method further comprises: And determining the second message according to the number of the currently running timers.
11. 11. The method of claim 10, wherein the determining the second message based on the number of currently running timers comprises: and if the number of the currently running timers is equal to the maximum number supported by the terminal equipment, determining that the second message comprises the second information.
12. 12. The method according to any one of claims 1 to 11, further comprising: Receiving first indication information, where the first indication information is used to indicate a maximum number of time slots, and a time slot in the maximum number of time slots may be randomly selected by the terminal device to send a message including the first data, or a random number of time slots in the maximum number of time slots may be selected by the terminal device as a time interval between two consecutive messages including the first data, where the message including the first data includes the first message and the second message.
13. 13. A method of communication, for use with a network device, comprising: Receiving at least one of a first message and N second messages from a terminal device, wherein the first message comprises first data and first information for contention resolution, the second message comprises first data and second information for contention resolution, and the second information is determined according to a Physical Uplink Shared Channel (PUSCH) occasion used for sending the first message; And sending a contention resolution message scrambled by a first Radio Network Temporary Identity (RNTI), wherein the first RNTI is determined according to a Physical Uplink Shared Channel (PUSCH) occasion used for sending the first message.
14. 14. The method of claim 13, wherein the first information comprises an identity of the terminal device, or comprises a parameter of a PUSCH occasion used for transmitting the first message, or comprises the first RNTI.
15. 15. The method according to claim 13 or 14, wherein the second information comprises parameters of PUSCH occasions for transmitting the first message or comprises the first RNTI.
16. 16. The method according to any one of claims 13 to 15, further comprising: And sending first indication information, wherein the first indication information is used for indicating the maximum time slot number, a time slot in the maximum time slot number can be randomly selected by the terminal equipment to send a message comprising the first data, or the random time slot number in the maximum time slot number can be selected by the terminal equipment as a time interval between two messages comprising the first data, wherein the message comprising the first data comprises the first message and the second message.
17. 17. A communication device comprising one or more processors configured to execute a computer program or instructions stored in a memory, causing the device to perform the method of any one of claims 1 to 12 or to perform the method of any one of claims 13 to 16.
18. 18. A chip or chip system comprising a processor coupled to a memory for storing a computer program, the processor for executing the computer program stored in the memory to implement the method of any one of claims 1 to 16.
19. 19. A computer readable storage medium, characterized in that the storage medium has stored therein a computer program or instructions which, when executed by a communication device, implement the method of any of claims 1 to 16.
20. 20. A computer program product comprising a computer program which, when run, implements the method of any one of claims 1 to 16.

Description

Communication method and communication device Technical Field The embodiment of the application relates to the field of communication, and more particularly relates to a communication method and a communication device. Background In the process of random access of the terminal equipment, the terminal equipment sends a random access preamble, namely a message 1 (Msg 1), then the network equipment sends a random access response, namely a message 2 (Msg 2), then the terminal equipment transmits a message, namely a message 3 (Msg 3), on a preset Physical Uplink SHARED CHANNEL (PUSCH) based on RAR scheduling, wherein the Msg3 carries an identification (for example, identity (ID) of the terminal equipment or an identification (Contention Resolution) of the contention resolution, and the network equipment sends a contention resolution (Contention Resolution) message, namely a message 4 (Msg 4) to the terminal equipment after receiving the Msg 3. The network device scrambles Msg4 by using a radio network temporary identifier (radio network temporary identifier, RNTI) on a physical downlink control channel (physical downlink control channel, PDCCH), wherein the RNTI is obtained by deriving based on a PUSCH (physical uplink shared channel) occasion used by Msg3 transmission, after the terminal device sends the Msg3, a contention resolution timer is started, the PDCCH is monitored in a time window of the timer, and if the Msg4 scrambled by the RNTI is monitored in the PDCCH, the contention resolution is considered to be successful (namely, the terminal device is successfully accessed). The Msg3 may transmit through a diversity slotted ALOHA (DIVERSITY SLOTTED ALOHA, DSA) mechanism, under which the terminal device may send multiple copies of the data packet, where any one of the multiple copies is located in a slot without interference from other data packets, and the data packet of the terminal device considers that the transmission is successful. However, when multiple copies of Msg3 are transmitted, the terminal device starts multiple contention resolution timers to monitor the Msg4, where each contention resolution timer corresponds to one Msg4 descrambled/scrambled RNTI, and if there is an overlap between 2 or more time windows of the contention resolution timers, the overlapping time windows correspond to 2 or more RNTIs, and the terminal device cannot determine which RNTI corresponds to the Msg4 received in the time when the windows overlap. Disclosure of Invention The application provides a communication method and a communication device, which can determine RNTI used for monitoring a contention resolution message when time windows of a plurality of contention resolution timers overlap. In a first aspect, a communication method is provided, which may be performed by a terminal device, or by a component part of the terminal device (e.g. a chip or a circuit or a chip system). For ease of understanding, the following description is given with a terminal device execution example. The method comprises the steps of sending a first message, wherein the first message comprises first data and first information used for contention resolution, starting a first timer, wherein the first timer is used for monitoring the contention resolution message scrambled by a first wireless network temporary identity (RNTI), the first RNTI is determined according to the PUSCH time used for sending the first message, the running time length of the first timer reaches a first time length and then exceeds a second time length, sending N times of second messages, the second messages comprise the first data and second information used for contention resolution, the second information is determined according to the PUSCH time used for sending the first message, when the second message is sent for the ith time, the running time length of the first timer is determined to reach a second time length and then exceeds a first time length, the difference value between the second time length and the first time length is equal to the time interval of sending the second message and the first message for the ith time, i is an integer, and the time length of i is [ E1, N ]. Optionally, the first message and the second message are msg3 copies sent in different time slots. Optionally, the contention resolution message is msg4. Based on the scheme, after the first timer is started, the second messages which are sent subsequently all carry information for determining the first RNTI, and the running time of the first timer is prolonged, so that the competition resolving messages corresponding to the second messages can be monitored through the first timer, and the efficiency of receiving the competition resolving messages is improved. In some implementations, the method further includes determining that the running duration of the first timer exceeds a third duration when the second message is transmitted for an n+1th time, the third duration being greater th