Random access in a non-terrestrial network
US-11343857-B2 · May 24, 2022 · US
Random access in a satellite communication system
US12028908B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12028908-B2 |
| Application number | US-201917279106-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 15, 2019 |
| Priority date | Oct 15, 2018 |
| Publication date | Jul 2, 2024 |
| Grant date | Jul 2, 2024 |
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- Title
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Abstract
Official abstract text for this publication.
The present invention provides a method of performing by a UE device a random access attempt in a communication system comprising at least one non-terrestrial transmission station, the method comprising receiving reference signals transmitted by the non-terrestrial transmission station; determining from the received reference signals a trip time between the UE device and the non-terrestrial transmission station; and using the trip time to control the random access attempt.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of performing by a user equipment, UE, device a random access attempt in a communication system comprising at least one satellite transmission station, the method comprising: determining a trip time between the UE device and a non-terrestrial satellite transmission station of the communication system using orbit information of the satellite transmission station, the orbit information being known to the UE device; and using the trip time to determine a timing offset for a random access attempt transmission, and transmitting the random access attempt with the determined timing offset. 2. The method of claim 1 , wherein the determined trip time is used to determine the timing offset for the access attempt transmission such that the access attempt transmission by the UE device is received at the satellite transmission station within a pre-determined time frame. 3. The method according to claim 1 , wherein a second trip time between the UE device and the same or a different satellite transmission station is estimated using a pre-determined trip time and information relating to relative movement of one or more satellite transmission stations in the communication system. 4. The method according to claim 1 wherein the UE device makes a decision as to which of more than one random access methods to use for the access attempt transmission dependent of a reliability estimate of the trip time determination. 5. The method according to claim 1 wherein the trip time is used to determine a response time for reception of a response from the satellite transmission station. 6. The method according to claim 1 , wherein the satellite transmission station is a satellite in low earth orbit.
Assignees
Inventors
Classifications
Airborne or Satellite Networks (space-based or airborne stations H04B7/185) · CPC title
Scheduling measurement reports {; Arrangements for measurement reports} · CPC title
- H04B7/01Primary
Reducing phase shift · CPC title
- H04W74/0841Primary
with collision treatment · CPC title
- H04W74/0833Primary
Random access procedures, e.g. with 4-step access · CPC title
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- What does patent US12028908B2 cover?
- The present invention provides a method of performing by a UE device a random access attempt in a communication system comprising at least one non-terrestrial transmission station, the method comprising receiving reference signals transmitted by the non-terrestrial transmission station; determining from the received reference signals a trip time between the UE device and the non-terrestrial tra…
- Who is the assignee on this patent?
- Ipcom Gmbh & Co Kg
- What technology area does this patent fall under?
- Primary CPC classification H04B7/01. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 02 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).