Methods to map cif and serving cells

A method in a wireless device, the method comprising:

• receiving, from a network node on a first carrier of either a first group of configured carriers or a second group of configured carriers, information related to a particular carrier in the same group as the first carrier, wherein the wireless device is configured with a plurality of carriers, each of the plurality of carriers comprising a communication channel between the wireless device and one of the network node or another wireless device, and the particular carrier is associated with one of a plurality of possible carrier indicator field values;
• determining, based on the first carrier on which the information was received, whether the first carrier belongs to the first group of configured carriers or the second group of configured carriers;
• and
• identifying, based on the determined group that the first carrier belongs to and the carrier indicator field value associated with the particular carrier, one of the plurality of configured carriers as the particular carrier.

A network node, comprising:

• one or more processors, the one or more processors configured to:
• configure a wireless device with a plurality of carriers, each of the plurality of carriers comprising a communication channel between the wireless device and one of the network node or another wireless device;
• group the configured carriers into at least a first group and a second group;
• associate each of the configured carriers of the first group with one of a plurality of possible carrier indicator field values such that each of the configured carriers of the first group has a different carrier indicator field value than other configured carriers in the first group;
• associate each of the configured carriers of the second group with one of the plurality of possible carrier indicator field values such that each of the configured carriers of the second group has a different carrier indicator field value than other configured carriers in the second group;
• and
• communicate, to the wireless device on a first carrier of either the first or second groups, information related to a particular carrier in the same group as the first carrier, wherein the particular carrier is identified by its associated carrier indicator field value.

A wireless device, comprising:

• one or more processors, the one or more processors configured to:
• receive, from a network node on a first carrier of either a first group of configured carriers or a second group of configured carriers, information related to a particular carrier in the same group as the first carrier, wherein the wireless device is configured with a plurality of carriers, each of the plurality of carriers comprising a communication channel between the wireless device and one of the network node or another wireless device, and the particular carrier is associated with one of a plurality of possible carrier indicator field values;
• determine, based on the first carrier on which the information was received, whether the first carrier belongs to the first group of configured carriers or the second group of configured carriers;
• and
• identify, based on the determined group that the first carrier belongs to and the carrier indicator field value associated with the particular carrier, one of the plurality of configured carriers as the particular carrier.