Multi-sim operations and dynamic spectrum sharing
A method comprising detecting that a terminal device is associated with a first network subscription and a second network subscription, wherein the first network subscription corresponds to a first radio access technology type and the second network subscription corresponds to a second radio access technology type, and dynamic spectrum sharing is utilized for both network types. The method further comprises determining that the first and second network subscriptions utilize, at least partly, the same connectivity resources of the terminal device, identifying that a reception activity for the first subscription occurs, at least partly, simultaneously with a reception activity for the second subscription, and based at least in part on this identification, transmitting an indication to an access node indicating a need for reduced search space operation.
1 . An apparatus comprising at least one processor, and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to:
detect that a first network subscription and a second network subscription are associated with a terminal device, wherein the first network subscription is to a first radio access technology type and the second network subscription is to a second radio access technology type, and dynamic spectrum sharing is utilized for the first network type and the second network type;
determine that the first network subscription and the second network subscription utilize, at least partly, same connectivity resources comprised in the terminal device;
identify that a first reception activity regarding the first network subscription occurs, at least partly, simultaneously with a second reception activity regarding the second network subscription; and based, at least partly, on the identifying,
transmit a first indication indicating a need for reduced search space operation to an access node,
wherein in the reduced search space operation the terminal device monitors orthogonal frequency-division multiplexing symbols of control resource set for paging monitoring in a limited manner.
2 . An apparatus according to claim 1 , wherein the apparatus is further caused to receive from the access node radio resource signalling that configures the terminal device for the reduced search space operation.
3 . An apparatus according to claim 1 , wherein the apparatus is further caused to determine a need for a switching gap and the need for the switching gap is indicated using a second indication to the access node.
4 . An apparatus according to claim 1 , wherein detecting that dynamic spectrum sharing is utilized is based on internal signalling within the terminal device, and wherein the internal signalling comprises exchanging information regarding network configurations of the first and the second network configurations respectively.
5 . An apparatus according to claim 1 , wherein the first radio access technology type is 5G associated with the access node and the second radio access technology type is a 4G associated with a second access node, and wherein the access node is a gNB and the second access node is an eNB.
6 . An apparatus according to claim 1 , wherein the apparatus is further caused to transmit a third indication to the access node, the third indication indicating a restriction on bandwidth part operation that limits a bandwidth part to a bandwidth and a subcarrier spacing associated with the network supporting the least bandwidth part.
7 . A method comprising:
detecting that a first network subscription and a second network subscription are associated with a terminal device, wherein the first network subscription is to a first radio access technology type and the second network subscription is to a second radio access technology type, and dynamic spectrum sharing is utilized for the first network type and the second network type;
determining that the first network subscription and the second network subscription utilize, at least partly, same connectivity resources comprised in the terminal device;
identifying that a first reception activity regarding the first network subscription occurs, at least partly, simultaneously with a second reception activity regarding the second network subscription; and based, at least partly, on the identifying,
transmitting a first indication indicating a need for reduced search space operation to an access node,
wherein in the reduced search space operation the terminal device monitors orthogonal frequency-division multiplexing symbols of control resource set for paging monitoring in a limited manner.