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US 10,383,137 B2Granted
Mechanisms for signaling out-of-coverage sidelink devices in wireless communication
AssigneeQUALCOMM Incorporated
InventorsPiyush Gupta, Junyi Li, Chong Li, Peter Gaal
Life of this patent
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Abstract
Aspects of the present disclosure provide methods and apparatuses that can provide sidelink grant information to out-of-coverage (OoC) sidelink devices. When one or more sidelink devices are out of a coverage area of a base station, an in-coverage device receiving sidelink grant information from the base station can retransmit, relay, or rebroadcast sidelink grant information to the OoC sidelink devices to enable sidelink communication with the OoC device or facilitate sidelink communication between OoC devices.
Claims22
A method of wireless communication by an apparatus, the method comprising:
- receiving sidelink grant information from a scheduling entity;
- and
- transmitting a direction selection signal (DSS) in a first transmission time interval (TTI) included in a subframe to one or more first scheduled entities located outside a coverage area of the scheduling entity, wherein the DSS comprises sidelink scheduling information based on the sidelink grant information;
- receiving after transmitting the DSS, a source transmit signal (STS) in the first TTI from an out-of-coverage (OoC) scheduled entity of the first scheduled entities, wherein the STS is configured to request a duration of time to keep a sidelink channel available;
- and
- transmitting, in the first TTI, a destination receive signal (DRS) to the OoC scheduled entity to indicate availability of the sidelink channel such that the sidelink channel is established between the apparatus and the OoC scheduled entity based on the sidelink grant information.
3 more elements
A method of wireless communication by an apparatus, the method comprising:
- receiving at a location outside a coverage area of a scheduling entity, from a first scheduled entity, a direction selection signal (DSS) comprising sidelink scheduling information in a transmission time interval (TTI) included in a subframe, wherein the first scheduled entity is located inside the coverage area, wherein the sidelink scheduling information is based on sidelink grant information originated from the scheduling entity;
- transmitting, in the TTI, a source transmit signal (STS) based on the sidelink scheduling information to a second scheduled entity, wherein the STS is configured to indicate a requested duration of time to utilize a sidelink channel;
- and
- receiving, in the TTI, a destination receive signal (DRS) from the second scheduled entity configured to indicate availability of the sidelink channel;
- and
- transmitting, in the TTI, sidelink data utilizing the sidelink channel established according to the sidelink scheduling information.
3 more elements
An apparatus for wireless communication, comprising:
- a communication interface;
- a memory stored with executable code;
- and
- a processor operatively coupled with the communication interface and memory,
- wherein the processor is configured by the executable code to:
- receive sidelink grant information from a scheduling entity;
- and
- transmit a direction selection signal (DSS) in a first transmission time interval (TTI) included in a subframe to one or more first scheduled entities located outside a coverage area of the scheduling entity, wherein the DSS comprises sidelink scheduling information based on the sidelink grant information;
- receive after transmitting the DSS, a source transmit signal (STS) in the first TTI from an out-of-coverage (OoC) scheduled entity of the first scheduled entities, wherein the STS is configured to request a duration of time to keep a sidelink channel available;
- and
- transmit, in the first TTI, a destination receive signal (DRS) to the OoC scheduled entity such that the sidelink channel is established between the apparatus and the OoC scheduled entity based on the sidelink grant information.
8 more elements
An apparatus for wireless communication, comprising:
- a communication interface;
- a memory stored with executable code;
- and
- a processor operatively coupled with the communication interface and memory,
- wherein the processor is configured by the executable code to:
- receive at a location outside a coverage area of a scheduling entity, from a first scheduled entity, a direction selection signal (DSS) comprising sidelink scheduling information in a transmission time interval (TTI) included in a subframe, wherein the first scheduled entity is located inside the coverage area, wherein the sidelink scheduling information is based on sidelink grant information originated from the scheduling entity;
- transmit, in the TTI, a source transmit signal (STS) based on the sidelink scheduling information to a second scheduled entity, wherein the STS is configured to indicate a requested duration of time to utilize a sidelink channel;
- receive, in the TTI, a destination receive signal (DRS) from the second scheduled entity configured to indicate availability of the sidelink channel;
- and
- transmit, in the TTI, sidelink data utilizing the sidelink channel established according to the sidelink scheduling information.
7 more elements
Dependencies are inferred from the claim text.