| 主权项 |
1. A method comprising:
providing, by a user device, a query to a first network device,
the query including a request for timeslot information and a request for a first timing advance value,
the timeslot information identifying a time during which the user device is to send data blocks; receiving, by the user device and from the first network device, a response associated with the query,
the response including the timeslot information and the first timing advance value,
the first timing advance value being used, by the user device, to send a first data block to the first network device during the time identified by the timeslot information; determining, by the user device, a first distance based on receiving the response,
the first distance corresponding to a distance between a first position of the user device and a position of the first network device,the first position being within a querying range of the first network device; detecting, by the user device, a change in position of the user device to a second position that is different than the first position; determining, by the user device, a second distance between the second position and the position of the first network device based on determining the change in position of the user device,
the second position being outside the querying range of the first network device; and determining, by the user device and after determining the change in position of the user device, a second timing advance value without the user device receiving the second timing advance value from the first network device,
the second timing advance value being determined based on the first timing advance value, the first distance, or the second distance,the second timing advance value being used, by the user device, to send a second data block to the first network device during the time identified by the timeslot information. |
