A new storage and routing method for non-terrestrial networks

Abstract

The present invention relates to a method (100) which enables to use regenerative satellites with MME (mobility management entity) characteristic instead of bent-pipe and / or transparent satellites and to download the data, that is received by the satellite establishing connection with the non-terrestrial networks (NTN) loT device, to the ground station without breaking the connection established with the said device.

Description

[0001] A NEW STORAGE AND ROUTING METHOD FOR NONTERRESTRIAL NETWORKS

[0002] Technical Field

[0003] The present invention relates to a method which enables to use regenerative satellites with MME (mobility management entity) characteristic instead of bentpipe and / or transparent satellites and to download the data, that is received by the satellite establishing connection with the non-terrestrial networks (NTN) loT device, to the ground station without breaking the connection established with the said device.

[0004] Background of the Invention

[0005] In the state of the art, nnetworks must provide full coverage for users of NTN loT supporting Rel-16, Rel-17 and Rel-18 and must ensure that a continuous connection (feeder link) is established between satellites and ground stations. Providing coverage all over the world at the same time and always having a ground station on the horizon are very costly solutions. This solution can cover the cost incurred for NTN NR devices. However, since loT services are low-cost and less profitable compared to other services, a separate solution is needed. In addition, a potential solution is not recommended in 3GGP Rel-16, Rel-17 and Rel-18.

[0006] The main problems required for NTN loT devices to establish communication with satellites can be listed as follows:

[0007] 1- The base station, which is fixed in terrestrial networks, is mobile in nonterrestrial networks. 2- Even if the NTN loT device is fixed in the network where non-Geostationary Orbit (NGSO) satellites are located in non-terrestrial networks, since the satellites are mobile, the data aimed to be transmitted from the NTN loT device must be transmitted by a plurality of satellites.

[0008] 3- While downloading the data -that is received by the NGSO satellite- to the ground station on the horizon, it ensures that the said NGSO satellite does not lose its connection with the NTN loT device.

[0009] However, in the current technique, there is no solution which enables to use an algorithm, that enables to apply the data given in 3GPP standards, to transmission protocols with minimum change; to avoid significant protocol changes on both the network and NTN loT devices part and to both boost the signal, that is received from the NTN loT device, by using a regenerative satellite with mobility management asset (MME) feature; and to carry out transactions such as first layer (Layer 1) and second layer (Layer 2), at the base station on the satellite.

[0010] The United States patent document no. US2022131657, an application included in the state of the art, discloses a system for wireless communication. The methods, systems, and devices for wireless communications -which are subject to the said United States patent document- are described for a relay UE and a source UE to provide transmissions of uplink communications in a decode and forward procedure in which redundancy version (RV) identifications of each instance of a transmission or retransmission are associated with a particular link of the source UE or relay UE. A set of RV sequences may be configured, with the source UE using a first subset of the RV sequences, and the relay UE using a second subset of RV sequences that is non-overlapping with the first subset. A base station or destination UE that receives the transmissions from the source UE and relay UE may thus receive RVs in accordance with the set of RV sequences. Summary of the Invention

[0011] An objective of the present invention is to realize a new storage and routing method for non-terrestrial networks which enables to use an algorithm, that enables to apply the data given in 3GPP standards, to transmission protocols with minimum change; to avoid significant protocol changes on both the network and NTN loT devices part and to both boost the signal, that is received from the NTN loT device, by using a regenerative satellite with mobility management asset (MME) feature; and to carry out transactions such as first layer (Layer 1) and second layer (Layer 2), at the base station on the satellite.

[0012] Detailed Description of the Invention

[0013] “A New Storage and Routing Method for Non-Terrestrial Networks” realized to fulfil the objective of the present invention is shown in the figure attached, in which:

[0014] Figure 1 is a flowchart of the inventive method.

[0015] The components illustrated in the figure are individually numbered, where the numbers refer to the following:

[0016] 100. Method

[0017] The inventive method (100) which enables to use regenerative satellites with MME (mobility management entity) characteristic instead of bent-pipe and / or transparent satellites and to download the data, that is received by the satellite establishing connection with the non-terrestrial networks (NTN) loT device, to the ground station without breaking the connection established with the said device; comprises steps of - the user terminal scanning the satellites or the non-terrestrial networks (NTN) at the coverage area in the process of transmitting the generated data (101),

[0018] - the user terminal sending the generated data to the NTN cell wherefrom it gets service at the coverage area, after the scanning process (102),

[0019] - the said service cell not finding the satellite station on the horizon, when data is received from NTN loT terminal (103),

[0020] - the said service cell finding the satellite station on the horizon, when data is received from NTN loT terminal (104), storing the data -that is received upon the said service cell does not find the satellite station on the horizon, when data is received from NTN loT terminal- on the user data proxy server (105), downloading the data -that is received from the said NTN loT terminal upon the said service cell finds the satellite station on the horizon, when data is received from NTN loT terminal- to the satellite ground station without making no change in the 3 GPP protocols (106), selecting the ground station of the satellite within the shortest distance and having the least delay by knowing the address of the target server where the ephemeris and the data of the related satellite will be sent, upon the mobility management entity (MME) feature and the user data proxy are on the satellite (107).

[0021] Industrial Applicability of the Invention

[0022] With the inventive method (100), it is ensured to use an algorithm -that enables to apply the data given in 3GPP standards- to transmission protocols with minimum change; to avoid significant protocol changes on both the network and NTN loT devices part and to both boost the signal, that is received from the NTN loT device, by using a regenerative satellite with mobility management asset (MME) feature; and to carry out transactions such as first layer (Layer 1) and second layer (Layer 2), at the base station on the satellite.

[0023] The inventive method (100) operates within the scope of the Personal Data Protection Law (KVKK).

[0024] It is possible to develop various embodiments of the inventive “New Storage and Routing Method (100) for Non-Terrestrial Networks”; the invention cannot be limited to examples disclosed herein and it is essentially according to claims.

Claims

CLAIMS1. A method (100) which enables to use regenerative satellites with MME (mobility management entity) characteristic instead of bent-pipe and / or transparent satellites and to download the data, that is received by the satellite establishing connection with the non-terrestrial networks (NTN) loT device, to the ground station without breaking the connection established with the said device; characterized by steps of- the user terminal scanning the satellites or the non-terrestrial networks (NTN) at the coverage area in the process of transmitting the generated data (101),- the user terminal sending the generated data to the NTN cell wherefrom it gets service at the coverage area, after the scanning process (102),- the said service cell not finding the satellite station on the horizon, when data is received from NTN loT terminal (103),- the said service cell finding the satellite station on the horizon, when data is received from NTN loT terminal (104), storing the data -that is received upon the said service cell does not find the satellite station on the horizon, when data is received from NTN loT terminal- on the user data proxy server (105), downloading the data -that is received from the said NTN loT terminal upon the said service cell finds the satellite station on the horizon, when data is received from NTN loT terminal- to the satellite ground station without making no change in the 3 GPP protocols (106), selecting the ground station of the satellite within the shortest distance and having the least delay by knowing the address of the target server where the ephemeris and the data of the related satellite will be sent, upon the mobility management entity (MME) feature and the user data proxy are on the satellite (107).

2. A method according to Claim 1; characterized in that at the step of the user terminal scanning the satellites or the non-terrestrial networks (NTN) at the coverage area in the process of transmitting the generated data (101); when it finds the NTN cell wherefrom the user terminal gets the best service, it connects to the said cell and completes the security procedures.

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