Industrial Technology Research Institute

Hua-Lung Tsai

Chorng-Ren Sheu

Chun-Yi Wei

Hung-Yu Wei

Mei-Ju Shih

Heng-Li Chin

Ching-Chun Chou

Wei-Chih Ting

Ho-Yuan Chen

Bai-Chuan Chang

Shao-Yu Lien

A satellite communication system and a method for managing radio resource of a non-terrestrial network are provided. The method includes: transmitting, by a first satellite, a first resource scheduling assignment when leaving a service area of the non-terrestrial network; receiving, by a second satellite, a second resource scheduling assignment corresponding to the first scheduling assignment when entering the service area; and accessing, by the second satellite, the radio resource according to the second resource scheduling assignment.

Satellite communication system and method for managing radio resource of non-terrestrial network

Disclosed is a connection management method for mobile device group, where the mobile device group includes a mobile device configured as a leader and a number of mobile devices configured as followers. The connection management method includes: in response to a measurement control from a first base station, the leader acquires signal quality measurement reports of all the mobile devices in the mobile device group corresponding to the first base station and a second base station, and signal quality measurement reports of all the followers in the mobile device group corresponding to the leader; the first base station determines whether to perform a handover according to the signal quality measurement reports received from the leader; and when the first base station determines to perform the handover, the first base station determines to perform a joint handover procedure or a half handover procedure according to the signal quality measurement reports.

Connection management method for mobile device group

A method and a user equipment for resource allocation of vehicle network are provided. The method includes: sensing available resource blocks (RBs) to generate a first resource indicator labeling location information of the available RBs; receiving second resource indicators from neighboring devices in which the second resource indicators label location information of the available RBs sensed by the neighboring devices; combining the first resource indicator and the second resource indicators into a cooperative resource indicator and sending the cooperative resource indicator to a base station providing a centralized network; and receiving location information of a dedicated RB assigned by the base station according to the cooperative resource indicator and sending messages via the dedicated RB.

Method and user equipment for resource allocation of vehicle network

A method for receiving and transmitting synchronization signal is provided. The method is applicable to a wireless communication device. The wireless communication device has a local timing. The method includes the following steps. Receive at least one synchronization signal. If a signal power of at least one of the at least one synchronization signal is greater than or equal to a signal power threshold, select one of the at least one synchronization signal as a reference synchronization signal according to a priority rule, and synchronize the local timing to the reference synchronization signal. If the signal power of each the synchronization signal is less than the signal power threshold, send a local synchronization signal according to the local timing. If the reference synchronization signal meets a forwarding criterion, forward the reference synchronization signal, wherein the forwarding criterion includes a power constraint and a hop count constraint.

Method for receiving and transmitting synchronization signal and wireless communication device

A synchronization source device includes a receiving circuit, a timing adjusting circuit and a transmitting circuit. The receiving circuit receives a first synchronization signal from an Evolved Node B (eNB). The timing adjusting circuit adjusts, according to a timing indicator, a timing of transmission of a second synchronization signal in response to the first synchronization signal, wherein a timing of the second synchronization signal is corresponding to a timing of the first synchronization signal. The transmitting circuit transmits the timing indicator as well as the second synchronization signal based on the adjusted timing of transmission.

Synchronization source device for synchronization coverage extension and method and system using the same

A method of performing a handover procedure for device-to-device (D2D) communications and a control node thereof are proposed. The method is applicable to a first control node serving a D2D communication between a first user equipment (UE) and a second UE. The method includes: determining that one of the first UE and the second UE needs to be handed over or both of the first UE and the second UE need to be handed over; transmitting a handover request to a second control node if the first control node determines that both of the first UE and the second UE need to be handed over to the second control node; receiving a handover request acknowledgement from the second control node; and transmitting a handover command to indicate the first UE and the second UE to detach from the first control node and synchronize to the second control node.

Method of performing handover procedure, making handover decision for device-to-device communications and control node thereof

Embodiments of a communication system, a base station (BS), a user equipment (UE), and a discovery method for device-to-device (D2D) communication are provided. The communication system includes a base station and multiple UEs. Each of the UEs uses one of multiple carrier frequency bands for communication. The BS obtains D2D communication requests of the UEs by the carrier frequency bands, and groups the UEs into multiple groups according to locations of the UEs. The BS allocates a discovery resource pool of a predefined carrier frequency band to the UEs in the same group and enables each of the UEs to transmit a discovery message corresponding to each of the UEs' own in the discovery resource pool.

Communication system, base station, user equipment, and discovery method for device-to-device communication

A method and a system for controlling a flow of a content delivery network (CDN) and a peer to peer (P2P) network are provided. The method includes the following steps. Data is transmitted via the CDN and the P2P network. A sharing rate is obtained from the P2P network by a P2P network tracker module. A first service cost rate is calculated according to the sharing rate by a logical controlling module. The CDN is controlled to accept or reject one or more new requests from the P2P network according to the first service cost rate by the logical controlling module.

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Taipei, Taiwan

Hua-Lung Tsai