Interference control in dual connectivity
The invention relates to a wireless device, network nodes and methods therein for handling interference. A method in a wireless device comprises receiving an Instant Uplink Access, IUA, grant from the first network node, which indicates at least a periodicity of a semi-persistent scheduling. The method further comprises, when having information to be transmitted in the UL to the first network node: determining whether being scheduled for UL transmission by the second network node in a resource associated with the IUA grant or not. The method further comprises: when not being scheduled: transmitting UL information to the first network node in the resource associated with IUA; and, when being scheduled: refraining from transmitting the UL information to the first network node in the resource associated with IUA.
1. A method performed by a wireless device in a communication network supporting dual connectivity, the method comprising:
when being connected to a first and a second network node:
receiving an Instant Uplink Access, IUA, grant from the first network node, indicating at least a periodicity of a semi-persistent scheduling; and
when having information to be transmitted in the UL to the first network node:
determining whether being scheduled for UL transmission by the second network node in a resource associated with the IUA grant, and:
when not being scheduled:
transmitting UL information to the first network node in the resource associated with IUA,
and, when being scheduled:
refraining from transmitting the UL information to the first network node in the resource associated with IUA.
2. Method according to claim 1 , wherein the refraining from transmission is performed until the wireless device is not scheduled by the second network node in an upcoming resource associated with IUA, or, until a predefined period of time has expired.
3. Method according to claim 2 , wherein, when the predefined period has expired without any resources associated with IUA not scheduled by the second network node:
transmitting UL information to the first network node in a resource associated with IUA irrespective of whether the wireless device is scheduled in the resource by the second network node.
4. Method according to claim 1 wherein the dual connectivity is related to DL/UL separation.
5. Method according to claim 1 , wherein the information to be transmitted in the UL to the first network node is control information.
6. Method according to claim 1 , wherein the dual connectivity is intra-frequency dual connectivity.
7. A computer program, comprising a non-transitory computer readable storage medium including instructions which, when executed on at least one processor, cause the at least one processor to carry out the method according to claim 1 .
8. A wireless device operable in a communication network supporting dual connectivity, the wireless device being configured to:
when being connected to a first and a second network node:
receive an Instant Uplink Access, IUA, grant from the first network node, indicating at least a periodicity of a semi-persistent scheduling; and to:
when having information to be transmitted in the UL to the first network node:
determine whether being scheduled for UL transmission by the second network node in a resource associated with the IUA grant, and to:
when not being scheduled:
transmit UL information to the first network node in the resource associated with IUA,
and, when being scheduled:
refrain from transmitting the UL information to the first network node in the resource associated with IUA.
9. Wireless device according to claim 8 , being configured to perform the refraining from transmission until the wireless device is not scheduled by the second network node in an upcoming resource associated with IUA, or, until a predefined period of time has expired.
10. Wireless device according to claim 9 , being configured to,
when the predefined period has expired without any resources associated with IUA being not scheduled by the second network node:
transmit UL information to the first network node in a resource associated with IUA irrespective of whether the wireless device is scheduled in the resource by the second network node.
11. Wireless device according to claim 8 , wherein the dual connectivity is related to DL/UL separation.
12. Wireless device according to claim 8 , wherein the information to be transmitted in the UL to the first network node is control information.
13. Wireless device according to claim 8 , wherein the dual connectivity is intra-frequency dual connectivity.