Methods and nodes for efficient MAC CE design for indicating mapping between pathloss reference and multiple SRI
There is provided a method in a wireless device. The method comprises: receiving a Media Access Control (MAC) Control Element (CE) from a network node, the MAC CE comprising a plurality of octets and a plurality of fields, wherein a first field of the plurality of fields is used to indicate a number of sets of power control parameters in a last octet of the received MAC CE, the sets of power control parameters being associated with a reference signal used for path loss estimation; and sending a transmission to a network node, based at least on a set of power control parameters associated with the reference signal.
1. A method performed by a wireless device comprising:
receiving a Media Access Control (MAC) Control Element (CE) from a network node, the MAC CE comprising a plurality of octets and a plurality of fields, wherein a first field of the plurality of fields is used to indicate a number of sets of power control parameters in a last octet of the received MAC CE, the sets of power control parameters being associated with a reference signal used for path loss estimation; and
sending a transmission to the network node, based at least on a set of power control parameters associated with the reference signal.
2. The method of claim 1 , further comprising determining a total number of sets of power control parameters associated with the reference signal, based on a length of the MAC CE and the first field.
3. The method of claim 2 , wherein the length of the MAC CE is given by a L field in the MAC CE or is determined by Logical Channel ID (LCID).
4. The method of claim 1 , wherein the MAC CE further comprises a second field for indicating the reference signal.
5. The method of claim 1 , wherein the first field indicates a number of one set or two sets of power control parameters in the last octet of the MAC CE.
6. The method of claim 1 , wherein the received MAC CE further comprises a third field.
7. The method of claim 6 , wherein the third field indicates to the wireless device if a mapping between a set of power control parameters and the reference signal is updated or added or removed.
8. The method of claim 6 , wherein the third field indicates to the wireless device to remove all previous mappings between a set of power control parameters and the reference signal.
9. The method of claim 6 , wherein the third field indicates to the wireless device to inactivate or activate path loss estimation for uplink transmissions based on the reference signal.
10. The method of claim 6 , wherein the third field indicates to the wireless device how to interpret the received MAC CE.
11. A wireless device comprising a communication interface and processing circuitry connected thereto and configured to:
receive a Media Access Control (MAC) Control Element (CE) from a network node, the MAC CE comprising a plurality of octets and a plurality of fields, wherein a first field of the plurality of fields is used to indicate a number of sets of power control parameters in a last octet of the received MAC CE, the sets of power control parameters being associated with a reference signal used for path loss estimation; and
send a transmission to the network node, based at least on a set of power control parameters associated with the reference signal.
12. A method performed by a network node for power control, the method comprising:
sending to a wireless device a Media Access Control (MAC) Control Element (CE), the MAC CE comprising a plurality of octets, each of which comprising a plurality of fields, wherein a first field of the plurality of fields is used to indicate a number of sets of power control parameters in a last octet of the MAC CE, the sets of power control parameters being associated with a reference signal used for path loss estimation; and
receiving, from the wireless device, a transmission based on at least a set of power control parameters associated with the reference signal.
13. The method of claim 12 , wherein a total number of sets of power control parameters associated with the reference signal is given by a length of the MAC CE and the first field.
14. The method of claim 13 , wherein the length of the MAC CE is given by a L field in the MAC CE or is determined by Logical Channel ID (LCD).
15. The method of claim 12 , wherein the MAC CE further comprises a second field for indicating the reference signal.
16. The method of claim 12 , wherein the first field indicates a number of one set or two sets of power control parameters in the last octet of the MAC CE.
17. The method of claim 12 , wherein the MAC CE further comprises a third field.
18. The method of claim 17 , wherein the third field indicates to the wireless device if a mapping between a set of power control parameters and the reference signal is updated or added or removed.
19. The method of claim 17 , wherein the third field indicates to the wireless device to remove all previous mappings between a set of power control parameters and the reference signal.
20. The method of claim 17 , wherein the third field indicates to the wireless device to inactivate or activate a path loss estimation for uplink transmissions based on the reference signal.