CN-122028192-A - Communication method and device

Abstract

A communication method and device can be applied to satellite communication, such as NTN. The terminal receives first information indicating a plurality of resources for transmitting a first message, and indicates whether to allow use of a DSA transmission scheme. And repeatedly sending a first message by the terminal through M resources or N groups of resources in the plurality of resources under the condition that the first information indicates that the DSA transmission mode is allowed to be used, wherein M and N are integers which are more than or equal to 2. The embodiment of the application can indicate whether the DSA is allowed to be used or not through the first information, so that the DSA is used in a more consistent manner with the current network environment, and the control of the network on the DSA is enhanced. In the DSA transmission mode, the terminal may repeatedly send the first message, thereby improving coverage of the first message.

Inventors

• YAO CHUTING
• XU BIN
• FAN LIANGLIANG
• XU HAIBO
• WANG FANFAN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260512

Application Date

20241108

Claims (20)

1. 1. A method of communication, the method comprising: Receiving first information, wherein the first information is used for indicating a plurality of resources, the plurality of resources are used for sending a first message, the first information is also used for indicating whether to allow a diversity slot hello DSA transmission mode to be used, and the first message is a Radio Resource Control (RRC) connection request message or an RRC establishment request message or an RRC connection recovery request message or an RRC data early transmission request message; And repeatedly sending the first message through M resources or N groups of resources in the plurality of resources under the condition that the first information indicates that the DSA transmission mode is allowed to be used, wherein M and N are integers which are greater than or equal to 2.
2. 2. The method of claim 1, wherein the step of determining the position of the substrate comprises, The first information is also used for indicating the maximum repeated transmission times or repeated transmission times of the first message, or The first information is further used for indicating the maximum repeated transmission times or the repeated transmission times corresponding to the DSA transmission mode.
3. 3. The method of claim 1, wherein the first information for indicating whether to allow the DSA transmission manner to be used comprises: The first information is used for indicating the maximum repeated sending times of the first message, wherein the maximum repeated sending times is 1, which indicates that the DSA transmission mode is not allowed to be used, or the maximum repeated sending times is more than 1, which indicates that the DSA transmission mode is allowed to be used, or The first information is used for indicating the repeated sending times of the first message, wherein the repeated sending times are 1, which indicates that the DSA transmission mode is not allowed to be used, or the repeated sending times are greater than 1, which indicates that the DSA transmission mode is allowed to be used.
4. 4. A method according to any one of claims 1 to 3, wherein the first information is further used to indicate a maximum number of consecutive transmissions or a number of consecutive transmissions of the first message.
5. 5. The method according to any one of claims 1 to 4, wherein the first information is system information.
6. 6. The method according to any one of claims 1-5, further comprising: receiving a contention resolution message scrambled by a first radio network temporary identity, RNTI, wherein, The first RNTI is determined according to a terminal identity included in the first message or, The first RNTI is an RNTI corresponding to the DSA transmission scheme or, The first RNTI is determined from the first parameter and a terminal identity comprised by the first message or, The first RNTI is determined from the M resources or the N groups of resources.
7. 7. The method of claim 6, wherein the first RNTI is determined from the M resources or the N groups of resources, comprising: The time domain positions and/or the frequency domain positions of the M resources or the different resources included in the N groups of resources are the same, the first RNTI is determined according to the time domain positions and/or the frequency domain positions, or, And the RNTI associated with different resources contained in the M resources or the N groups of resources is the first RNTI.
8. 8. The method according to claim 6 or 7, characterized in that the method further comprises: And sending second information, wherein the second information is used for indicating whether the capability of detecting a plurality of RNTI simultaneously exists or not, or the second information is used for indicating that the DSA transmission mode is used by the first message.
9. 9. The method of claim 8, wherein the second information is further used to indicate a number of repetitions of the first message or the second information is further used to indicate a maximum number of repetitions of the first message.
10. 10. The method of any one of claims 1-9, wherein the first message is repeatedly sent through M resources of the plurality of resources, the method further comprising: Starting a first timer after initially transmitting the first message and restarting the first timer after each retransmission of the first message, the first timer being used to listen for contention resolution messages, or, And respectively starting a first timer after each time of sending the first message, wherein the first timer is used for monitoring the contention resolution message.
11. 11. The method of any one of claims 1-9, wherein the first message is repeatedly sent through N groups of resources of the plurality of resources, the method further comprising: starting a first timer after the first message is sent on a first one of the N sets of resources and restarting the first timer after the first message is sent on each of the remaining N-1 sets of resources, the first timer being used to listen for contention resolution messages, or, And respectively starting a first timer after the first message is sent on each of the N groups of resources, wherein the first timer is used for monitoring the competition solving message.
12. 12. The method according to any one of claims 1-7, further comprising: and if the first information indicates that the DSA transmission mode is not allowed to be used, sending a first message through one resource or repeatedly sending the first message through a group of resources in the plurality of resources.
13. 13. A method of communication, the method comprising: Transmitting first information, wherein the first information is used for indicating a plurality of resources, the plurality of resources are used for transmitting first information, the first information is also used for indicating whether a DSA transmission mode is allowed to be used, and the first information is an RRC connection request message or an RRC establishment request message or an RRC connection recovery request message or an RRC data early transmission request message; the first message is detected on the plurality of resources.
14. 14. The method of claim 13, wherein the step of determining the position of the probe is performed, The first information is also used for indicating the maximum repeated transmission times or repeated transmission times of the first message, or The first information is further used for indicating the maximum repeated transmission times or the repeated transmission times corresponding to the DSA transmission mode.
15. 15. The method of claim 13, wherein the first information for indicating whether to allow the DSA transmission manner to be used comprises: The first information is used for indicating the maximum repeated sending times of the first message, wherein the maximum repeated sending times is 1, which indicates that the DSA transmission mode is not allowed to be used, or the maximum repeated sending times is more than 1, which indicates that the DSA transmission mode is allowed to be used, or The first information is used for indicating the repeated sending times of the first message, wherein the repeated sending times are 1, and the repeated sending times indicate that the DSA transmission mode is not allowed to be used, otherwise, the repeated sending times indicate that the DSA transmission mode is allowed to be used.
16. 16. The method according to any one of claims 13 to 15, wherein the first information is further used to indicate a maximum number of consecutive transmissions or a number of consecutive transmissions of the first message.
17. 17. The method according to any one of claims 13 to 16, wherein the first information is system information.
18. 18. The method according to any one of claims 13-17, further comprising: Detecting the first message on M resources or N groups of resources of the plurality of resources, wherein M and N are integers greater than or equal to 2; and sending the competition resolving message.
19. 19. The method of claim 18, wherein the number of contention resolution messages is 1.
20. 20. The method of claim 18 or 19, wherein the contention resolution message is scrambled by a first RNTI, wherein, The first RNTI is determined according to an identity of a terminal included in the first message or, The first RNTI is an RNTI corresponding to the DSA transmission scheme or, The first RNTI is determined according to the first parameter and an identity of a terminal included in the first message or, The first RNTI is determined from the M resources or the N groups of resources.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. Background Satellite communication has the advantages of wide coverage, long communication distance, high reliability, high flexibility, high throughput and the like, is not influenced by geographic environment, climate conditions and natural disasters, and has been widely applied to the fields of aviation communication, maritime communication, military communication and the like. In the satellite communication scenario, the distance between the User Equipment (UE) and the satellite is far, resulting in poor signal quality, and a further solution is still needed. Disclosure of Invention The embodiment of the application provides a communication method and a communication device, which are used for saving transmission resources. In a first aspect, a first communication method is provided, which can be applied to a terminal-side device, which is also referred to as a terminal device or as a terminal, for example. The terminal device is, for example, a terminal device, or a component (component) of the terminal device, for example, a communication module (communication module) capable of being applied to the terminal device, a circuit or a chip (for example, a modem (modem) chip, also called a baseband (baseband) chip, or a system on chip (SoC) chip or a system-in-a-chip (SYSTEMIN PACKAGE) chip including a modem core, a chip system or a processor, or other functional modules capable of implementing the functions of the terminal device, for example, a logic module or software capable of implementing all or part of the functions of the terminal device, which are provided in the terminal device. The method comprises the steps of receiving first information, wherein the first information is used for indicating a plurality of resources, the plurality of resources are used for sending a first message, the first information is also used for indicating whether a diversity slot hello (DIVERSITY SLOTTED ALOHA, DSA) transmission mode is allowed to be used, the first message is an RRC connection request message, an RRC establishment request message, an RRC connection recovery request message or an RRC data early transmission request message, and the first message is repeatedly sent through M resources or N groups of resources in the plurality of resources under the condition that the first information indicates that the DSA transmission mode is allowed to be used. The embodiment of the application provides a DSA mechanism, under which a terminal can repeatedly send an RRC connection request message or an RRC connection recovery request message. If DSA is used, the success rate of the network device for receiving RRC connection request message or RRC connection restoration request message can be improved, but if DSA is used too much, system performance backoff may be caused, and in consideration of this, DSA may be limited. The embodiment of the application can indicate whether the DSA is allowed to be used or not through the first information, so that the DSA is used in a more consistent manner with the current network environment, and the control of the network on the DSA is enhanced. In addition, the terminal can send the first message through a DSA transmission mode, and in the DSA transmission mode, the terminal can repeatedly send the first message, so that the coverage of the first message is improved. Even if the signal quality is poor, the success rate of the network device for receiving the first message can be improved through repeated transmission. In an optional implementation manner, the first information is further used for indicating a maximum number of repeated transmissions or a number of repeated transmissions of the first message, or the first information is further used for indicating a maximum number of repeated transmissions or a number of repeated transmissions corresponding to the DSA transmission mode. The maximum number of repeated transmissions or the number of repeated transmissions may correspond to a DSA transmission scheme, and if the terminal uses the DSA transmission scheme, the terminal uses the maximum number of repeated transmissions or the number of repeated transmissions. Or the maximum number of repeated transmissions or the number of repeated transmissions may not correspond to the DSA transmission mode, for example, configured by the network device, so that the method is more flexible. In an alternative embodiment, the maximum number of repeated transmissions corresponds to a first coverage enhancement level, or the number of repeated transmissions corresponds to a first coverage enhancement level. For example, different coverage enhancement levels may correspond to the same or different maximum number of repeated transmissions, or different coverage enhancement levels may correspond to the same or