User Equipment for Obtaining a Band Width Part for a Random Access, a Network Node, and Corresponding Methods in a Wireless Communication Network

A method performed by a User Equipment (UE) for obtaining a Band Width Part (BWP) for a respective Downlink (DL), first Uplink (UL1), and second Uplink (UL2), for a Random Access of the UE to a wireless communication network, the method comprising:

• when it is assumed that for every UL1 BWP with Physical Random Access Channel (PRACH) occasions, there is a corresponding UL2 BWP with PRACH occasions that has the same band width part identity (bwp id):
• obtaining an UL1 BWP with PRACH occasions comprising a first bwp id and a DL BWP with the same first bwp id;
• and
• after the UL1 BWP and DL BWP have been obtained, obtaining an UL2 BWP with PRACH occasions comprising the same first bwp id;
• else, performing any one out of:
• when there is a UL1 BWP and UL2 BWP with PRACH occasions with a common first bwp id, selecting these UL1 BWP and UL2 BWP, and selecting a DL BWP comprising the same first bwp id;
• and
• when there is no UL1 BWP and UL2 BWP with PRACH occasions with a common first bwp id, selecting an initial BWP for each of the respective UL1, UL2, and DL, which UL1 BWP, UL2 BWP and DL BWP thereby comprises the same first bwp id.

A method performed by a network node for configuring a User Equipment (UE) to obtain a Band Width Part (BWP) for a respective Downlink (DL), first Uplink (UL1), and second Uplink (UL2), for a Random Access of the UE to a wireless communication network, the method comprising configuring the UE to:

• when it is assumed that for every UL1 BWP with Physical Random Access Channel (PRACH) occasions, there is a corresponding UL2 BWP with PRACH occasions that has the same band width part identity (bwp id):
• obtain an UL1 BWP with PRACH occasions comprising a first bwp id and a DL BWP with the same first bwp id;
• and
• after the UL1 BWP and DL BWP have been obtained, obtain an UL2 BWP with PRACH occasions comprising the same first bwp id;
• else, perform any one out of:
• when there is a UL1 BWP and UL2 BWP with PRACH occasions with a common first bwp id:
• selecting these UL1 BWP and UL2 BWP, and selecting a DL BWP comprising the same first bwp id;
• when there is no UL1 BWP and UL2 BWP with PRACH occasions with a common first bwp id:
• selecting an initial BWP for each of the respective UL1, UL2 and DL;
• which UL1 BWP, UL2 BWP, and DL BWP thereby comprises the same first bwp id.

A User Equipment (UE) configured for obtaining a Band Width Part (BWP) for a respective Downlink (DL), first Uplink (UL1), and second Uplink (UL2), for a Random Access of the UE to a wireless communication network, the UE comprising:

• processing circuitry;
• memory containing instructions executable by the processing circuitry whereby the UE is operative to:
• when it is assumed that for every UL1 BWP with Physical Random Access Channel (PRACH) occasions, there is a corresponding UL2 BWP with PRACH occasions that has the same band width part identity (bwp id):
• obtain an UL1 BWP with PRACH occasions comprising a first bwp id and a DL BWP with the same first bwp id;
• and
• after the UL1 BWP and DL BWP have been obtained, obtain an UL2 BWP with PRACH occasions comprising the same first bwp id;
• else, performing any one out of:
• when there is a UL1 BWP and UL2 BWP with PRACH occasions with a common first bwp id, select these UL1 BWP and UL2 BWP, and selecting a DL BWP comprising the same first bwp id;
• and
• when there is no UL1 BWP and UL2 BWP with PRACH occasions with a common first bwp id, select an initial BWP for each of the respective UL1, UL2, and DL, which UL1 BWP, UL2 BWP and DL BWP thereby comprises the same first bwp id.

A network node for configuring a User Equipment (UE) to obtain a Band Width Part (BWP) for a respective Downlink (DL), first Uplink (UL1), and second Uplink (UL2), for a Random Access of the UE to a wireless communication network, the network node comprising:

• processing circuitry;
• memory containing instructions executable by the processing circuitry whereby the network node is operative to configure the UE to:
• when it is assumed that for every UL1 BWP with Physical Random Access Channel (PRACH) occasions, there is a corresponding UL2 BWP with PRACH occasions that has the same band width part identity (bwp id):
• obtain an UL1 BWP with PRACH occasions comprising a first bwp id and a DL BWP with the same first bwp id;
• and
• after the UL1 BWP and DL BWP have been obtained, obtain an UL2 BWP with PRACH occasions comprising the same first bwp id;
• else, perform any one out of:
• when there is a UL1 BWP and UL2 BWP with PRACH occasions with a common first bwp id:
• selecting these UL1 BWP and UL2 BWP, and selecting a DL BWP comprising the same first bwp id;
• when there is no UL1 BWP and UL2 BWP with PRACH occasions with a common first bwp id:
• selecting an initial BWP for each of the respective UL1, UL2 and DL;
• which UL1 BWP, UL2 BWP, and DL BWP thereby comprises the same first bwp id.