CN-122002348-A - Non-land network communication method, user equipment and network equipment

Abstract

The disclosure provides a non-terrestrial network communication method, user equipment and network equipment, and relates to the field of wireless communication. The user equipment receives the indication of supporting coverage enhancement sent by the network equipment, sends the position information to the network equipment, and receives SSB measurement time configuration corresponding to the neighbor cell sent by the network equipment according to the position information. Therefore, the SSB measurement time configuration of the neighbor cell is configured or adjusted according to the position information of each user equipment under the non-terrestrial network beam of the neighbor cell, and the accuracy of neighbor cell measurement is improved.

Inventors

• LIU JIAXIANG
• PENG SHUO
• TONG XIN

Assignees

• 中国电信股份有限公司技术创新中心
• 中国电信股份有限公司

Dates

Publication Date

20260508

Application Date

20241108

Claims (20)

1. 1. A non-terrestrial network communication method, applied to a target user equipment, comprising: Receiving an indication of supporting coverage enhancement sent by the network equipment; transmitting the location information of the target user equipment to the network equipment; and receiving a synchronous signal and a physical broadcast channel block SSB measurement time configuration corresponding to the neighbor cell of the target user equipment, which are sent by the network equipment.
2. 2. The method of claim 1, wherein the coverage enhancement comprises different types of non-terrestrial network beam scanning characteristics.
3. 3. The method of claim 1, further comprising performing SSB measurements based on a corresponding SSB measurement time configuration of the target user equipment's neighbor cells and a difference in actual propagation delays of the serving cell and the neighbor cells.
4. 4. The method of claim 3, wherein performing SSB measurements based on the corresponding SSB measurement time configuration of the target user equipment's neighbor cell and the difference in actual propagation delays of the serving cell and the neighbor cell comprises: Determining the difference of the actual propagation delay between the serving cell and the neighbor cell according to the position information of the target user equipment and the ephemeris information of the serving cell and the neighbor cell; and determining SSB measurement window starting time of the neighbor cell according to the difference of the actual propagation delays of the serving cell and the neighbor cell and the offset in SSB measurement time configuration of the neighbor cell so as to start performing SSB measurement on the neighbor cell.
5. 5. The method of claim 4, wherein determining the gap in actual propagation delay of the serving cell from the neighbor cell comprises: determining propagation delay of a serving cell according to the position information of the target user equipment and the ephemeris information of the serving cell; Determining the propagation delay of the neighbor cell according to the position information of the target user equipment and the ephemeris information of the neighbor cell; And determining the difference of the actual propagation delay of the serving cell and the neighbor cell according to the propagation delay of the serving cell and the propagation delay of the neighbor cell.
6. 6. The method of claim 1, further comprising: And activating measurement of an SSB measurement window of the neighbor cell under the condition that the distance between the target user equipment and the non-terrestrial network beam of the neighbor cell is smaller than a threshold value.
7. 7. The method of claim 1, further comprising: in the case of limited measurement capability of the target user equipment, the active type of non-terrestrial network beam is preferentially measured from the SSB measurement time configuration of the network equipment configuration.
8. 8. The method of claim 1, further comprising: receiving SSB measurement time configuration update corresponding to a neighbor cell of the target user equipment, wherein the SSB measurement time configuration update is sent by network equipment; and in response to the deletion of the non-terrestrial network beam in the SSB measurement time configuration update, sending a closing instruction of the deleted non-terrestrial network beam to the network equipment, so that the network equipment configures the deleted non-terrestrial network beam into a closing type after receiving closing instructions returned by all target user equipment in response to the SSB measurement time configuration update.
9. 9. The method of claim 1, wherein the SSB measurement time configuration is determined from location information of individual user equipment in a non-terrestrial network beam of a neighbor cell of the target user equipment.
10. 10. The method of claim 9, wherein the SSB measurement time configuration is determined from location information of individual user equipment in a non-terrestrial network beam of a neighbor cell of the target user equipment comprises: And transmitting SSB to the non-land network beam with the user equipment in the coverage area, and determining SSB measurement time configuration corresponding to the neighbor cell of the target user equipment according to the SSB transmission time corresponding to the neighbor cell of the target user equipment.
11. 11. A non-terrestrial network communication method, applied to a network device, comprising: Broadcasting an indication of support coverage enhancement; receiving the position information of target user equipment sent by the target user equipment; And sending the corresponding synchronous signals of the adjacent cells and the SSB measurement time configuration of the physical broadcast channel block to the target user equipment.
12. 12. The method of claim 11, wherein the coverage enhancement comprises different types of non-terrestrial network beam scanning characteristics.
13. 13. The method of claim 11, further comprising: And determining corresponding SSB measurement time configuration of the neighbor cell of the target user equipment according to the position information of each user equipment under the non-terrestrial network beam of the neighbor cell of the target user equipment.
14. 14. The method of claim 13, wherein determining the corresponding SSB measurement time configuration for the neighbor cell of the target user equipment comprises: And transmitting SSB to the non-land network beam with the user equipment in the coverage area, and determining SSB measurement time configuration corresponding to the neighbor cell of the target user equipment according to the SSB transmission time corresponding to the neighbor cell of the target user equipment.
15. 15. The method of claim 14, wherein transmitting SSBs to non-terrestrial network beams having user equipment within coverage comprises: setting the non-terrestrial network beam to a closed type in the absence of user equipment under the non-terrestrial network beam; Setting the non-terrestrial network beam to be of a common signal transmission type only in the case that there are user equipments under the non-terrestrial network beam and all the user equipments are in an idle state; Setting the non-terrestrial network beam as an active type in the case that there is a user equipment under the non-terrestrial network beam and the user equipment is in a connected state; SSBs are transmitted for non-terrestrial network beams that are of an active type and/or of a common signaling only type.
16. 16. The method of claim 11, further comprising: And in the case that no user equipment exists under the non-land network beam, sending an SSB measurement time configuration update to the target user equipment with the distance from the non-land network beam being smaller than a threshold value, wherein the measurement on the non-land network beam is deleted in the SSB measurement time configuration update.
17. 17. The method of claim 16, further comprising: After receiving the turn-off indication returned by all target user equipment in response to the SSB measurement time configuration update, configuring the non-terrestrial network beam to be of a turn-off type.
18. 18. A user equipment comprising a memory and a processor coupled to the memory, characterized in that the processor is configured to perform the non-terrestrial network communication method of any of claims 1-10 based on instructions stored in the memory.
19. 19. A network device comprising a memory and a processor coupled to the memory, wherein the processor is configured to perform the non-terrestrial network communication method of any of claims 11-17 based on instructions stored in the memory.
20. 20. A computer readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the steps of the non-terrestrial network communication method of any of claims 1-17.

Description

Non-land network communication method, user equipment and network equipment Technical Field The present disclosure relates to the field of wireless communications, and in particular, to a non-terrestrial network communication method, a user equipment, and a network device. Background NTN (Non-TERRESTRIAL NETWORK ) provides network coverage due to the introduction of satellite nodes, and the propagation distance between UE (User Equipment) and BS (Base Station) is much longer than TN (TERRESTRIAL NETWORK ). Thus, the coverage performance of non-terrestrial networks is more limited relative to terrestrial networks. Limited by the maximum power limit of the satellite load, a non-terrestrial network cannot guarantee that all the wave positions corresponding to the satellite beams are activated at the same time. In the NR (New Radio) technology, SSB (Synchronization SIGNAL AND PBCH (Physical Broadcast Channel) block, synchronization signal and physical broadcast channel block) measurement is mainly implemented according to SMTC (SSB Measurement Timing Configuration, SSB measurement time configuration), so as to ensure that a user equipment can perform neighbor cell measurement at an accurate slot position, and further complete operations such as cell reselection, handover, and the like. Disclosure of Invention According to the embodiment of the disclosure, the user equipment receives the indication of supporting coverage enhancement sent by the network equipment, sends the own position information to the network equipment, and receives the SSB measurement time configuration sent by the network equipment, so that the SSB measurement time configuration of the neighboring cell is configured or adjusted according to the position information of each user equipment under the non-terrestrial network beam of the neighboring cell, the accuracy of neighboring cell measurement is improved, and the measurement power consumption of the user equipment is reduced. Some embodiments of the present disclosure provide a non-terrestrial network communication method applied to a target user equipment, which includes receiving an indication of supporting coverage enhancement sent by a network device, sending location information of the target user equipment to the network device, and receiving a synchronization signal and a physical broadcast channel block SSB measurement time configuration corresponding to a neighbor cell of the target user equipment sent by the network device. In some embodiments, the coverage enhancements include different types of non-terrestrial network beam scanning characteristics. In some embodiments, the method further comprises performing SSB measurement according to a corresponding SSB measurement time configuration of the neighbor cell of the target user equipment and a difference between actual propagation delays of the serving cell and the neighbor cell. In some embodiments, performing SSB measurement according to the corresponding SSB measurement time configuration of the neighbor cell of the target user equipment and the difference of the actual propagation delays of the serving cell and the neighbor cell comprises determining the difference of the actual propagation delays of the serving cell and the neighbor cell according to the position information of the target user equipment and the ephemeris information of the serving cell and the neighbor cell, and determining the SSB measurement window starting time of the neighbor cell according to the difference of the actual propagation delays of the serving cell and the neighbor cell and the offset in the SSB measurement time configuration of the neighbor cell so as to start performing SSB measurement on the neighbor cell. In some embodiments, determining the difference between the actual propagation delays of the serving cell and the neighbor cell comprises determining the propagation delay of the serving cell according to the position information of the target user equipment and the ephemeris information of the serving cell, determining the propagation delay of the neighbor cell according to the position information of the target user equipment and the ephemeris information of the neighbor cell, and determining the difference between the actual propagation delays of the serving cell and the neighbor cell according to the propagation delay of the serving cell and the propagation delay of the neighbor cell. In some embodiments, further comprising activating measurement of an SSB measurement window of the neighbor cell if a distance of the target user equipment from a non-terrestrial network beam of the neighbor cell is less than a threshold value. In some embodiments, it further comprises preferentially measuring active types of non-terrestrial network beams from SSB measurement time configurations configured by the network device in the case of limited measurement capabilities of the target user device. In some embodiments, the method further comprises t