# US 12,225,600 B2 · Slicing of network resources for dual connectivity using NR > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,600 B2 - Document ID: US12225600B2 - Status: Granted - Kind: B2 - Application number: 18/335,501 - Filed: 2023-06-15 - Published: 2023-10-12 - Granted: 2025-02-11 - Earliest claimed: 2018-03-29 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Per Willars; Angelo Centonza - Web page: https://patentgrep.com/patent/US12225600B2 ## CPC - H04W 76/10: Connection setup - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/27: between access points - H04W 76/15: Setup of multiple wireless link connections - H04L 5/0092: {Indication of how the channel is divided} - H04W 76/11: Allocation or use of connection identifiers - H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer - H04W 84/042: {Public Land Mobile systems, e.g. cellular systems} - H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Embodiments include methods performed by a first network node configured to operate in a radio access network (RAN). Such methods include determining a radio access technology (RAT)/Frequency Selection Priority (RFSP) index associated with a user equipment (UE) served by the first network node. Such methods include sending, to a second network node, a request for the second network node to establish dual connectivity with the UE as a secondary node (SN). The request includes the RFSP index. Other embodiments include complementary methods performed by the second network node, as well as network nodes configured to perform such methods. ## Claims ### Claim 1 A method performed by a first network node configured to operate in a radio access network (RAN), the method comprising: determining a radio access technology (RAT)/Frequency Selection Priority (RFSP) index associated with a user equipment (UE) served by the first network node; managing the UE's access to resources of the RAN based on one or more radio resource management (RRM) policies associated with the RFSP index; and sending, to a second network node, a request for the second network node to establish dual connectivity with the UE as a secondary node (SN), wherein: the request includes the RFSP index, and the RFSP index is also associated with one or more further RRM policies, at the second network node, for managing the UE's access to resources of a RAN that includes the second network node. ### Claim 2 (depends on 1) The method of claim 1, wherein determining the RFSP index comprises receiving the RFSP index from a core network coupled to the RAN. ### Claim 3 (depends on 1) The method of claim 1, wherein the second network node is configured with a different RAT than the first network node. ### Claim 4 (depends on 1) The method of claim 1, wherein: the first network node is configured with Long-Term Evolution (LTE) RAT and the one or more RRM policies are for the LTE RAT; and the second network node is a next-generation Node B (gNB) configured with New Radio (NR) radio access technology (RAT) and the one or more further RRM policies are for the NR RAT. ### Claim 5 (depends on 4) The method of claim 4, wherein the one or more further RRM policies for the NR RAT are the same as the one or more RRM policies for the LTE RAT. ### Claim 6 (depends on 4) The method of claim 4, wherein managing the UE's access to resources of the RAN comprises: mapping the RFSP index to a particular network slice associated with the LTE RAT; and scheduling resources of the LTE RAT for UE transmission or reception of data, based on the following associated with the particular network slice: one or more scheduling parameters, and a predefined share of the resources of the LTE RAT. ### Claim 7 A method performed by a second network node configured to operate in a radio access network (RAN), the method comprising: receiving, from a first network node, a request for the second network node to establish dual connectivity with the UE as a secondary node (SN), wherein the request includes a radio access technology (RAT)/Frequency Selection Priority (RFSP) index associated with the UE, wherein the RFSP index is also associated with one or more further RRM policies, at the first network node, for managing the UE's access to resources of a RAN that includes the first network node; mapping the RFSP index to one or more further radio resource management (RRM) policies for a RAT that the second network node is configured with; and managing the UE's access to resources of the RAN based on the one or more further RRM policies. ### Claim 8 (depends on 7) The method of claim 7, wherein the second network node is configured with a different RAT than the first network node. ### Claim 9 (depends on 7) The method of claim 7, wherein: the second network node is a next-generation Node B (gNB) configured with New Radio (NR) RAT and the one or more further RRM policies are for the NR RAT; and the first network node is configured with Long-Term Evolution (LTE) RAT and the one or more RRM policies are for the LTE RAT. ### Claim 10 (depends on 9) The method of claim 9, wherein the one or more RRM policies for the NR RAT are the same as one or more further RRM policies for the LTE RAT. ### Claim 11 (depends on 9) The method of claim 9, wherein managing the UE's access to resources of the RAN comprises: mapping the RFSP index to a particular network slice associated with the NR RAT; and scheduling resources of the NR RAT for UE transmission or reception of data, based on the following associated with the particular network slice: one or more scheduling parameters, and a predefined share of the resources of the NR RAT. ### Claim 12 (depends on 7) The method of claim 7, wherein: the second network node comprises a central unit (CU) and a distributed unit (DU); the request is received by the CU and forwarded to the DU; and mapping the RFSP index and managing the UE's access to resources of the RAN are performed by the DU. ### Claim 13 A first network node configured to operate in a radio access network (RAN), the first network node comprising: communication interface circuitry configured to communicate with at least a second network node; and processing circuitry operably coupled to the communication circuitry, whereby the processing circuitry and the communication interface circuitry are configured to: determine a radio access technology (RAT)/Frequency Selection Priority (RFSP) index associated with a user equipment (UE) served by the first network node; manage the UE's access to resources of the RAN based on one or more radio resource management (RRM) policies associated with the RFSP index; and send, to the second network node, a request for the second network node to establish dual connectivity with the UE as a secondary node (SN), wherein: the request includes the RFSP index, and the RFSP index is also associated with one or more further RRM policies, at the second network node, for managing the UE's access to resources of a RAN that includes the second network node. ### Claim 14 (depends on 13) The first network node of claim 13, wherein the processing circuitry and the communication interface circuitry are configured to determine the RFSP index based on receiving the RFSP index from a core network coupled to the RAN. ### Claim 15 (depends on 13) The first network node of claim 13, wherein: the first network node is configured with Long-Term Evolution (LTE) RAT and the one or more RRM policies are for the LTE RAT; and the second network node is a next-generation Node B (gNB) configured with New Radio (NR) radio access technology (RAT) and the one or more further RRM policies are for the NR RAT. ### Claim 16 (depends on 13) The first network node of claim 13, wherein the processing circuitry and the communication interface circuitry are configured to manage the UE's access to resources of the RAN based on: mapping the RFSP index to a particular network slice associated with the LTE RAT; and scheduling resources of the LTE RAT for UE transmission or reception of data, based on the following associated with the particular network slice: one or more scheduling parameters, and a predefined share of the resources of the LTE RAT. ### Claim 17 (depends on 7) A second network node configured to operate in a radio access network (RAN), the second network node comprising: communication interface circuitry configured to communicate with at least a first network node; and processing circuitry operably coupled to the communication circuitry, whereby the processing circuitry and the communication interface circuitry are configured to perform operations corresponding to the method of claim 7. ### Claim 18 (depends on 17) The second network node of claim 17, wherein: the second network node is a next-generation Node B (gNB) configured with New Radio (NR) radio access technology (RAT) and the one or more further RRM policies are for the NR RAT; and the first network node is configured with Long-Term Evolution (LTE) RAT and the one or more RRM policies are for the LTE RAT.