Backup procedure for ambient IoT device connectivity through a smartphone
A user equipment apparatus includes at least one processor and at least one memory. The at least one memory stores instructions which, when executed by the at least one processor, cause the user equipment apparatus at least to: receive, from a network device, an instruction to provide backscattering service to at least one ambient IoT device for a service period of time T, the instruction including a configuration for sidelink communication with one or more backup user equipment apparatuses (backup UEs) capable of providing backscattering service to at least one ambient IoT device; and provide, based on the instruction, the backscattering service by transmitting at least one request for tag identification.
1 . A user equipment apparatus comprising:
at least one processor; and
at least one memory storing instructions which, when executed by the at least one processor, cause the user equipment apparatus at least to:
receive, from a network device, an instruction to provide backscattering service to at least one ambient IoT device for a network-configured service period of time T in a best-effort mode without a guaranteed quality of service, the instruction comprising an identification of at least one backup user equipment apparatus (backup UE) selected by the network device and a configuration for sidelink communication with one or more backup user equipment apparatuses (backup UEs) capable of providing backscattering service to at least one ambient IoT device; and
provide, based on the instruction, the backscattering service at an excitation power parameter P included in the instruction by transmitting at least one request for tag identification and, prior to expiration of the service period of time T, upon deciding to cease providing the backscattering service, transmit via the configured sidelink communication a request for an indication of availability to the identified backup UE to locally determine continuation of the backscattering service without network-initiated reselection.
2 . The user equipment apparatus of claim 1 , wherein the instructions, when executed by the at least one processor, further cause the user equipment apparatus at least to:
transmit, by the sidelink communication to a second UE among the one or more backup UEs, a request for an indication of availability to provide the backscattering service for at least a reminder of the service period of time T,
wherein the request indicates that the backscattering service is to be provided at an excitation power P.
3 . The user equipment apparatus of claim 2 , wherein the instructions, when executed by the at least one processor, further cause the user equipment apparatus at least to:
receive, from the second UE, a response to the request for the indication of availability, the response comprising one of:
an indication of availability to provide the backscattering service; or
an indication of no availability to provide the backscattering service; and
transmit, to the network device, a message corresponding to the response.
4 . A method comprising:
receiving, by a user equipment apparatus from a network device, an instruction to provide backscattering service to at least one ambient IoT device for a network-configured service period of time T in a best-effort mode without a guaranteed quality of service, the instruction comprising an identification of at least one backup user equipment apparatus (backup UE) selected by the network device and a configuration for sidelink communication with one or more backup user equipment apparatuses (backup UEs) capable of providing backscattering service to at least one ambient IoT device; and
providing, based on the instruction, the backscattering service at an excitation power parameter P included in the instruction by transmitting at least one request for tag identification and, prior to expiration of the service period of time T, upon deciding to cease providing the backscattering service, transmit via the configured sidelink communication a request for an indication of availability to the identified backup UE to locally determine continuation of the backscattering service without network-initiated reselection.
5 . The method of claim 4 , further comprising:
transmitting, by the sidelink communication to a second UE among the one or more backup UEs, a request for an indication of availability to provide the backscattering service for at least a reminder of the service period of time T,
wherein the request indicates that the backscattering service is to be provided at an excitation power P.
6 . The method of claim 5 , further comprising:
receiving, from the second UE, a response to the request for the indication of availability, the response comprising one of:
an indication of availability to provide the backscattering service; or
an indication of no availability to provide the backscattering service; and
transmitting, to the network device, a message corresponding to the response.