Patent ID: 11889438
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. A network node for enabling Proximity Services (ProSe) operation for a wireless device on a non-serving carrier, the network node being configured to serve the wireless device on a cell on a serving carrier, the network node comprising:
a communication interface circuit configured to communicate with the wireless device;
a processor circuit operatively coupled to the communication interface circuit; and
a memory operatively coupled to the processor circuit and storing program instructions for execution by the processor circuit, such that the processor circuit is configured to:
receive a gap request from the wireless device for performing ProSe operation on a target cell of the non-serving carrier;
upon receiving the gap request, determine whether the target cell on the non-serving carrier, on which the wireless device is to perform the ProSe operation, is known or unknown to the wireless device based on the wireless device being synchronized to the target cell on the non-serving carrier by knowing a timing of the target cell and being able to receive radio signals from the target cell;
configure the wireless device, using the communication interface circuit:
with a first gap configuration for a case that the target cell on the non-serving carrier is known to the wireless device, wherein the first gap configuration comprises a first gap of a first duration before a start of a ProSe operation duration, wherein the ProSe operation duration includes transmission durations that correspond to subframes expected to be used for ProSe; and
with a second gap configuration for a case that the target cell on the non-serving carrier is unknown to the wireless device, wherein the second gap configuration comprises a second gap of a second duration before the start of the ProSe operation duration, and wherein the duration of the gap of the first gap configuration and the second gap configuration is lesser than a ProSe transmission period;

adapt scheduling for the wireless device based on the first gap configuration and the second gap configuration, wherein the adapting the scheduling of the wireless device comprises not scheduling the wireless device on the cell on the serving carrier during one of:
the duration of the gap of the first gap configuration for the case that the target cell on the non-serving carrier is known to the wireless device, and
the duration of the gap of the second gap configuration for the case that the target cell on the non-serving carrier is unknown to the wireless device; and

signal the gap configuration configured for the wireless device to one or more network nodes.