Granted Patent B2

US 12,250,692 · App. 17/414,456 · Granted Mar 11, 2025

Inventors: Shohei Yoshioka (Tokyo, JP); Satoshi Nagata (Tokyo, JP); Huan Wang (Beijing, CN)

Assignee: NTT DOCOMO, INC.

H04W72/23H04W40/22H04W72/0446H04W72/1268H04W72/569

Abstract

Claims (27)

1. A terminal comprising:

a control unit that determines a configuration for a transmission of a scheduling request based on whether the scheduling request is for a communication between a base station and the terminal or the scheduling request is for inter-terminal communication;

a transmitting unit that transmits the scheduling request to the base station by using the configuration for the transmission of the determined scheduling request; and

a receiving unit that receives, from the base station, a scheduling grant corresponding to the transmitted scheduling request,

wherein, when the scheduling request for the communication between the base station and the terminal overlaps the scheduling request for the inter-terminal communication at least in a time domain, the transmitting unit transmits one of the scheduling requests by prioritizing the one of the scheduling requests,

wherein the configuration for the transmission of the determined scheduling request includes information indicating a resource to transmit the scheduling request and an ID of the scheduling request, and

wherein the information indicating the resource to transmit the scheduling request and the ID of the scheduling request, the information indicating the resource to transmit the scheduling request and the ID of the scheduling request being included in the configuration for the transmission of the determined scheduling request, are associated with a communication type of the inter-terminal communication, and the communication type of the inter-terminal communication is one of a unicast, a groupcast, or a broadcast.

2. A radio communication system comprising:

a base station; and

a terminal,

wherein the terminal includes:

a control unit that determines a configuration for a transmission of a scheduling request based on whether the scheduling request is for a communication between the base station and the terminal or the scheduling request is for inter-terminal communication;

a transmitting unit that transmits the scheduling request to the base station by using the configuration for the transmission of the determined scheduling request; and

a receiving unit that receives, from the base station, a scheduling grant corresponding to the transmitted scheduling request,

wherein, when the scheduling request for the communication between the base station and the terminal overlaps the scheduling request for the inter-terminal communication at least in a time domain, the transmitting unit transmits one of the scheduling requests by prioritizing the one of the scheduling requests,

wherein the configuration for the transmission of the determined scheduling request includes information indicating a resource to transmit the scheduling request and an ID of the scheduling request, and

wherein the information indicating the resource to transmit the scheduling request and the ID of the scheduling request, the information indicating the resource to transmit the scheduling request and the ID of the scheduling request being included in the configuration for the transmission of the determined scheduling request, are associated with a communication type of the inter-terminal communication, and the communication type of the inter-terminal communication is one of a unicast, a groupcast, or a broadcast,

wherein the base station includes:

a receiving unit that receives the scheduling request from the terminal, and

a transmitting unit that transmits the scheduling grant corresponding to the scheduling request.

3. A communication method executed by a terminal, the method comprising:

determining a configuration for a transmission of a scheduling request based on whether the scheduling request is for a communication between a base station and the terminal or the scheduling request is for inter-terminal communication;

transmitting the scheduling request to the base station by using the configuration for the transmission of the determined scheduling request; and

receiving, from the base station, a scheduling grant corresponding to the transmitted scheduling request,

wherein, when the scheduling request for the communication between the base station and the terminal overlaps the scheduling request for the inter-terminal communication at least in a time domain, transmitting one of the scheduling requests by prioritizing the one of the scheduling requests,

wherein the configuration for the transmission of the determined scheduling request includes information indicating a resource to transmit the scheduling request and an ID of the scheduling request, and

wherein the information indicating the resource to transmit the scheduling request and the ID of the scheduling request, the information indicating the resource to transmit the scheduling request and the ID of the scheduling request being included in the configuration for the transmission of the determined scheduling request, are associated with a communication type of the inter-terminal communication, and the communication type of the inter-terminal communication is one of a unicast, a groupcast, or a broadcast.

Assignments (1)

Continuity (1)

References Cited (21)