329 results about "Store and forward" patented technology

Presented are systems and methods for timing enhancement in store and forward mode. A wireless communication node may configure a waiting duration indicative of a duration to a next service period of a satellite, and a serving duration indicative of a duration of a service period of the satellite. The wireless communication node may send the waiting duration and the serving duration, to be used by a wireless communication device during a random access procedure.

A wireless device sends, to a mobility management node via a base station of a satellite network, an indication of support for a store and forward (S&F) mode of operation. The wireless device receives, from the mobility management node, a de-registration timer parameter for the S&F mode.

A mobility management node receives, from a wireless device, a first message requesting registration of a store and forward (SF) mode, and sends, to an authentication management node, an authentication request message indicating the SF mode. The mobility management node receives, from the authentication management node, an authentication response message, and sends, to the wireless device, a second message requesting authentication.

Methods, systems, and apparatuses are provided for time information of Non-Terrestrial Network (NTN) store and forward operations in a wireless communication system such that User Equipment (UE) can apply Store and Forward (S&F) operations more efficiently, wherein a method of a UE comprises receiving a time information for an S&F operation for an NTN cell, and determining when to enter or leave an S&F mode for the NTN cell based on the time information.

Embodiments herein disclose methods and systems for managing satellite communication using a store and forward (S&F) service with at least one network node onboarding a satellite (400). The method includes determining, by a User Equipment (UE) (500), that a network supports the S&F service. Further, the method includes determining, by the UE (500), at least one new value of a timer and provide the estimated delivery time to upper layers of the UE (500), to use the at least one new value of the timer by an application layer based on at least one estimated delivery time received from a core network node (600). The method includes initiating, by the UE (500), at least one Non-Access Stratum (NAS) procedure with the network based on the determined at least one new value of the timer.

A wireless device receives one or more parameters for a store and forward (SF) mode for an application, and determines whether to send a packet of the application based on at least one of the one or more parameters or that the network operates in the SF mode. The wireless device sends, to a base station, a message comprising at least one of a non-access stratum (NAS) message comprising the packet, or a value of at least one of the one or more parameters.

A wireless terminal that communicates with an access node on a satellite via a service link comprises receiver circuitry and processor circuitry. The receiver circuitry is configured to receive, from the access node, store and forward (S&F) information comprising (1) S&F operation mode status indicating that the access node provides S&F service, and (2) access control information, the access control information for the S&F service. The processor circuitry is configured, based on the S&F information, to make a decision whether an access attempt is allowed. The S&F service comprises storing and forwarding of user data.

According to one embodiment of this specification, there is provided an operation method of user equipment (UE). The method may comprise: receiving a Store and Forward (S&F) satellite operation parameter; starting a timer T3451 with a S&F wait timer duration value provided in the S&F satellite operation parameter; and while the timer T3451 is running, not initiating a non-access stratum (NAS) procedure over a S&F satellite cell in a tracking area identifier (TAI) list assigned to the UE, unless the S&F satellite cell broadcasts a same satellite identifier (ID) broadcasted by the S&F satellite cell from which an accept message was received.

Methods, systems, and apparatuses are provided for wait timers of Non-Terrestrial Network (NTN) Store and Forward (S&F) in a wireless communication system, wherein a method for a UE comprises initiating a first procedure to a first network, wherein the first procedure is an attach, tracking area update (TAU) procedure, or a service request procedure, receiving a configuration of a wait time for an S&F operation, starting a first timer based on the wait time, wherein the UE is prohibited to initiate the first procedure to the first network for the S&F operation when the first timer is running, and stopping the first timer if the UE initiates or successfully completes a second procedure in a cell of a second network, wherein the second procedure is an attach, TAU procedure, or a service request procedure.

Systems and methods for operating a satellite equipped with a base station include: indicating, to a user equipment "UE" attempting to connect to the satellite, that the satellite supports both: (i) direct transfer; and (ii) store and forward "S&F" modes of operation; receiving, from the UE, a set of data comprising an indication of which mode of operation the satellite should use to transmit the set of data; and based on the mode of operation indicated by the UE, either: (a) transmitting the set of data to one of: a second satellite; or a ground station; or (b) storing the set of data in a data storage and transmitting the set of data to the ground station at a later point in time.

A wireless communication method and a terminal device are provided. The method includes: a terminal device receiving first indication information, which is used for determining that a first satellite successfully receives mobile-originated (MO) data sent by the terminal device, wherein the MO data is transmitted by using a storage and forwarding mode of the first satellite; and the terminal device caching the MO data, wherein the cached MO data is cleared away in the following cases: the terminal device determining that the MO data is successfully submitted to a core network and / or the cached MO data is invalid.

Example embodiments of the present disclosure relate to store-and-forward operations in non-terrestrial networks (NTN). In an aspect, a first non-terrestrial network (NTN) device based on receiving a first registration request from a terminal device and not having a connectivity with a terrestrial network (TN) device, store the first registration request. The first NTN device transmit an identifier assigned to the terminal device to the terminal device. In this way, the registration procedure, authentication procedure, security, and UE subscription data is during store-and-forward scenarios.

The present invention is related to a method of exchanging data in a wireless communication system, the method being implemented by a wireless device of the wireless communication system, wherein the wireless device comprises a communication unit configured to exchange data with a radio access network (RAN) of the wireless communication system. The method comprises being provided with an indication of store and forward (S&F) operations from a base station of the wireless communication system, and when / if the store and forward (S&F) operation is enabled, then the wireless device does not send low priority service data to base station and stores them in the wireless device buffer, until the store and forward (S&F) operation ends or another network node not operating in store and forward mode is accessed.

The present disclosure relates to the technical field of communications, and disclosed are an information processing method, an apparatus, and a readable storage medium, so as to perfect the processing mechanism in on-satellite storage and forwarding. The method comprises: determining a transmission state of transmission of data to a first satellite; and on the basis of the transmission state, executing a deregistration process or a registration update process, or establishing an association between untransmitted data and the first satellite.

The embodiment of the invention provides a non-ground network communication method and device which are applied to an NTN scene, in the communication method, based on an NTN storage and forwarding mechanism, a network device can send a first message to a terminal, the first message is used for indicating that the network device located on a high-altitude platform such as a satellite does not cache downlink data of the terminal in a coverage area of the network device, and the network device can send the downlink data to the terminal. According to the embodiment of the invention, the terminals do not monitor paging messages or do not establish RRC connection, so that the terminals can save power consumption in a store-and-forward scene of NTN communication.

Provided in the embodiments of the present application are a store-and-forward-based satellite communication method, and a device, which are applied to the technical field of communications. The method is applied to a first satellite base station, wherein a satellite base station network comprises at least one satellite base station, the satellite base station network comprises the first satellite base station and a second satellite base station, the first satellite base station respectively establishes communication connections with the second satellite base station and a user equipment, the second satellite base station respectively establishes communication connections with the first satellite base station and a ground station, and the user equipment is in a non-store-and-forward mode. The method comprises: when the communication between a second satellite base station and a ground station is disconnected or the communication between a first satellite base station and the second satellite base station is disconnected, the first satellite base station generating a first mode switching instruction; and the first satellite base station sending the first mode switching instruction to a user equipment, wherein the first mode switching instruction is used for instructing the user equipment to switch the communication mode thereof from the current non-store-and-forward mode to a store-and-forward mode.

Provided are: a means for executing, in satellite-routed communication between a network and UE, with a store-and-forward function taken into account, management of a timer for transmitting / receiving appropriate control information between the network and the UE so as to retransmit an appropriate control message based on the control information between the network and the UE, management of the number of times a message is retransmitted, and retransmission of appropriate messages; and a method for executing appropriate processing based on the control information.

Provided is a method for transmission control. The method includes that a terminal device receives first information from a network device, where the first information is used for indicating whether data of a first service or of a first Radio Bearer (RB) is allowed to be transmitted using a store and forward mode of a satellite. There is also provided a corresponding terminal device and a corresponding network device.

The embodiment of the invention provides a convergence gateway of a TSN network and an AUTBUS network and a terminal node of the AUTBUS network. The convergence gateway comprises a TSN module and at least one CN node module of the AUTBUS network, the fusion gateway is connected with the TSN node through a TSN module in the fusion gateway; the CN node module of the fusion gateway is connected with a plurality of terminal TN nodes through an AUTBUS bus; the CN node module of the fusion gateway performs phase alignment according to the time mark provided by the TSN module at fixed time intervals, so that the phases of the AUTBUS network and the TSN network are kept synchronous; and a CN node module of the AUTBUS network is provided with a storage and forwarding model and a flow scheduling mechanism which are the same as those of the TSN network, and is used for scheduling passing messages. According to the embodiment of the invention, the time synchronization of the TSN module of the convergence gateway and the CN node module of the AUTBUS network is realized, the CN node and the TSN node of the AUTBUS adopt the same store-and-forward model and flow scheduling mechanism, and the time certainty of the data flow between the TSN node and the TN node in the end-to-end communication is realized.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a satellite network entity, signaling that includes a first indicator of a cell-barred operation status indicative of whether a set of UEs is barred from communications and a second indicator of whether a store and forward operation mode is available for communications. A UE that receives such signaling may evaluate a combination of a first value for the first indicator and a second value of the second indicator and determine an availability of the satellite network entity for communication. The combination of values may be used by the UE to determine whether to initiate connections or communications, refrain from communicating, or communicate in accordance with a store and forward mode. Additionally, the satellite network entity may update the indications in response to a condition associated with a feeder link connection changing.

The invention discloses a remote sensing satellite spread spectrum data transmission broadcast uplink and downlink closed-loop test method and system. The method comprises the following steps: generating an instruction sequence for operating on-board equipment; generating content data required by the uplink data; according to a satellite uplink data protocol, jointly packaging an instruction sequence for operating on-board equipment and content data required by uplink data into an uplink baseband data block; processing the uplink baseband data block into a radio frequency signal, and sending the radio frequency signal to a satellite data transmission broadcast uplink receiving device; the satellite data transmission broadcast uplink receiving equipment re-analyzes the radio frequency signal into baseband data, executes the baseband data according to an instruction in the baseband data, stores and forwards or directly forwards required content data, and processes the required content data into the radio frequency signal; the satellite data transmission broadcast downlink sending device sends the radio frequency signal to the ground; re-analyzing the radio frequency signal into baseband data, performing analysis and extraction, and re-extracting content data; and comparing the required content data in the uplink data with the content data extracted and analyzed in the downlink to obtain a content correctness test report.

Techniques for authenticating user equipment (UE) to a network are provided. For example, a method performed by a non-terrestrial node in a network includes: receiving a registration request from the UE for authenticating to the network; in response to the unavailability of a link between the non-terrestrial node and a terrestrial node of the network for forwarding the registration request; storing the registration request and assigning binding information associated with the non-terrestrial node to the UE; and sending a message to the UE including the binding information to be used by the UE.

The invention provides an information transmission method and device and a storage medium, and the method comprises the steps: responding to a received first message sent by a terminal, and sending the first message to a core network; wherein the first message is used for requesting attachment to a network; receiving a second message sent by the core network; wherein the second message is at least used for indicating whether the terminal and the core network have a first capability, and the first capability is a capability supporting a store-and-forward service; based on the second message, it is determined whether the terminal can use the store-and-forward service through the satellite. According to the method and the device, whether the terminal can use the store-and-forward service through the satellite or not can be determined in the process that the terminal is attached to the network, so that satellite resources are prevented from being occupied by the terminal which is not authorized by the store-and-forward service, the satellite access service is effectively prevented from being interrupted, and the reliability of NTN communication is improved.

The invention relates to a data storage and forwarding method and device and a computer readable storage medium. The data storage and forwarding method for the UE is characterized by comprising the following steps: receiving a broadcast message from a first satellite, and reading a working mode included in the broadcast message as a storage and forwarding mode; sending a first message to the first satellite; in response to receiving a second message fed back by the first satellite, entering a radio resource control (RRC) connection state; and sending the third message to the first satellite.

Systems and methods are disclosed that relate to a store-and-forward service for downlink data in wireless communications system. In one embodiment, a method performed by a User Equipment (UE) comprises receiving an indication of a store-and-forward service via which downlink data for the UE will be stored at a network node while a network connection between the UE and a radio access network (RAN) of the wireless communications system is unavailable and subsequently forwarded to the UE upon or during connection or resuming the a connection with the network node. The method further comprises, based on the received indication, maintaining a certain status while the network connection is unavailable and, upon or during connection or resuming a connection with the network node, receiving, from the network node, one or more downlink data packets stored by the network node for the store-and-forward service while the network connection was unavailable.

This disclosure provides systems, methods and apparatuses for a Store and Forward (S&F) operation in a non-terrestrial network (NTN). S&F operation is a feature in which an NTN node (101) can provide some service to a user equipment (UE) (102) even though a service link to the UE and a feeder link to the core network (CN 110) are not concurrently available. The NTN node (101) can implement some functionality of a base station (BS) (106) on board a satellite (104). The BS (106) can transmit system information (612) to indicate whether it supports the S&F operation as well as other parameters to manage whether a UE (102) attempts to access BS (106). Aspects of this disclosure enable the BS (106) on a satellite (104) to control timing and coordinate S&F operation with the UE (102) based on current or future availability of a feeder link to the CN (110).

Satellite base stations (201, 201A) according to an embodiment are provided with: a control unit (230) that executes control for switching an operation mode between a store-and-forward (S&F) mode and a normal mode; and a transmission unit (211) that transmits, to a communication device (100), information indicating the current operation mode. The transmission unit transmits, to the communication device, information indicating a time at which the operation mode is switched from the S&F mode to the normal mode when it is indicated that the information indicating the current operation mode is the S&F mode, and transmits, to the communication device, information indicating a time at which the operation mode is switched from the normal mode to the S&F mode when it is indicated that the information indicating the current operation mode is the normal mode.

Provided in the embodiments of the present application are a communication method and a device, which are applied to the technical field of communications. The method is applied to a first satellite device, and comprises: when the store-and-forward capability of the first satellite device is constrained, sending a redirection request to a second satellite device; when the second satellite device can provide a data transmission service for a terminal device, receiving a redirection response message sent by the second satellite device; and, when the second satellite device cannot provide the data transmission service for the terminal device, receiving a denial-of-data-transmission redirection response message sent by the second satellite device, wherein the first satellite device comprises a first core network device, and the second satellite device comprises a second core network device. On the basis of the technical solution, when the store-and-forward capability of the first satellite device is constrained, the first satellite device provides for the terminal device the second satellite device that can provide the service, so as not to affect the normal communication of the terminal device.

The invention relates to a unified control method and device for terminal access, communication equipment, a storage medium and a computer program product. The method comprises the steps that first information issued by a satellite is received, the satellite is in a store-and-forward mode, and the first information comprises an access category and an access identifier; and when access to the satellite is needed, performing access control check and / or access barring check based on the first information, and determining whether to initiate an access attempt. Through adoption of the method, based on the first information which is transmitted between the satellite and the terminal and contains the access category and the access identifier, the satellite can realize access control of accessing the terminal to the non-ground network, the effectiveness of the access control is improved, cell congestion is avoided, the communication stability and reliability of a store-and-forward service are ensured, and the user experience is improved. And the effective degree of on-satellite resource utilization is effectively improved.

A method performed by a mobility management entity (MME) are provided. The method comprises detecting that a monitoring event that a user equipment (UE) is moving from being registered in a store and forward (S&F) mode to not being registered in the S&F mode, and in response to detecting the monitoring event, transmitting, to a service capability server / application server (SCS / AS), a message indicating that the UE is moving from being registered in the S&F mode to not being registered in the S&F mode.