# US 11,310,725 B2 · Resolving system information between EPS and 5GS > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,725 B2 - Document ID: US11310725B2 - Status: Granted - Kind: B2 - Application number: 16/483,434 - Filed: 2018-01-31 - Published: 2019-11-21 - Granted: 2022-04-19 - Earliest claimed: 2017-02-03 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget Lm Ericsson (Publ) - Inventors: Gunnar Mildh; Matteo Fiorani; Paul Schliwa-Bertling; Kai-Erik Sunell - Web page: https://patentgrep.com/patent/US11310725B2 ## CPC - H04W 48/16: Discovering, processing access restriction or access information - H04W 48/12: using downlink control channel - H04W 48/18: Selecting a network or a communication service - H04W 48/06: based on traffic conditions - H04W 48/10: using broadcasted information - H04W 48/20: Selecting an access point - 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 88/10: adapted for operation in multiple networks, e.g. multi-mode access points - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract According to some embodiments, a method for use in a wireless device of acquiring system information associated with a core network comprises receiving system information from a network node. The network node is connected to one or more core networks. The system information includes an indication of a network type (e.g., enhanced packet system (EPS), fifth generation system (5GS), etc.) for each core network. The method further comprises determining a capability of the wireless device for connecting to the plurality of network types, and determining whether to connect to a core network based on the network type and the capability of the wireless device. In particular embodiments, the indication of the network type comprises a list of public land mobile networks (PLMNs) connected to the network node and an indication of network types supported by each PLMN. ## Claims ### Claim 1 A method for use in a wireless device of acquiring system information associated with a core network, the method comprising: receiving system information from a network node, the network node connected to one or more core networks, the system information including an indication of a network type for each core network of the one or more core networks, wherein the network type comprises a particular type of a plurality of network types, wherein the indication of the network type for each core network of the one or more core networks comprises a list of identifiers of one or more public land mobile networks (PLMNs) connected to the network node and an indication of one or more network types supported by each PLMN of the one or more PLMNs; determining a capability of the wireless device for connecting to the plurality of network types; and determining whether to connect to a core network of the one or more core networks based on the network type of the core network and the capability of the wireless device for connecting to the plurality of network types. ### Claim 2 (depends on 1) The method of claim 1, wherein the indication of the network type for each core network of the one or more core networks is received in system information block one (SIB1) or system information block two (SIB2). ### Claim 3 (depends on 1) The method of claim 1, wherein determining whether to connect to a core network of the one or more core networks comprises determining not to connect to any of the one or more core networks; and the method further comprises connecting to a different network node. ### Claim 4 (depends on 1) The method of claim 1, wherein the plurality of network types comprises an enhanced packet system (EPS) core network type and a fifth generation system (5GS) core network type. ### Claim 5 (depends on 4) The method of claim 4, wherein determining the capability of the wireless device for connecting to the plurality of network types comprises determining the wireless device is capable of connecting to a 5GS core network type; and the method further comprises interpreting one or more parameters of the received system information differently for 5GS than for EPS. ### Claim 6 (depends on 5) The method of claim 5, wherein interpreting one or more parameters of the received system information differently for 5GS than for EPS comprises ignoring an EPS barring parameter and determining whether to connect to a core network of the one or more core networks comprises evaluating a 5GS barring parameter. ### Claim 7 (depends on 5) The method of claim 5, wherein interpreting one or more parameters of the received system information differently for 5GS comprises obtaining an indication that one or more information elements of the system information are to be interpreted according to 5GS. ### Claim 8 (depends on 7) The method of claim 7, wherein obtaining the indication that one or more information elements are to be interpreted according to 5GS comprises at least one of receiving dedicated signaling or broadcast signaling from the network node. ### Claim 9 (depends on 7) The method of claim 7, wherein obtaining the indication that one or more information elements are to be interpreted according to 5GS comprises determining that the wireless device is connected to a 5GS core network. ### Claim 10 (depends on 4) The method of claim 4, wherein determining the capability of the wireless device for connecting to the plurality of network types comprises determining the wireless device is capable of connecting to a 5GS core network type; and the method further comprises acquiring 5GS specific system information blocks. ### Claim 11 A wireless device capable of acquiring system information associated with a core network, the wireless device comprising processing circuitry operable to: receive system information from a network node, the network node connected to one or more core networks, the system information including an indication of a network type for each core network of the one or more core networks, wherein the network type comprises a particular type of a plurality of network types, wherein the indication of the network type for each core network of the one or more core networks comprises a list of identifiers of one or more public land mobile networks (PLMNs) connected to the network node and an indication of one or more network types supported by each PLMN of the one or more PLMNs; determine a capability of the wireless device for connecting to the plurality of network types; and determine whether to connect to a core network of the one or more core networks based on the network type of the core network and the capability of the wireless device for connecting to the plurality of network types. ### Claim 12 (depends on 11) The wireless device of claim 11, the processing circuitry is operable to receive the indication of the network type for each core network of the one or more core networks in system information block one (SIB1) or system information block two (SIB2). ### Claim 13 (depends on 11) The wireless device of claim 11, wherein when the processing circuitry determines not to connect to any of the one or more core networks, the processing circuitry is further operable to connect to a different network node. ### Claim 14 (depends on 11) The wireless device of claim 11, wherein the plurality of network types comprises an enhanced packet system (EPS) core network type and a fifth generation system (5GS) core network type. ### Claim 15 (depends on 14) The wireless device of claim 14, wherein when the processing circuitry determines the wireless device is capable of connecting to a 5GS core network type, the processing circuitry is further operable to interpret one or more parameters of the received system information differently for 5GS than for EPS. ### Claim 16 (depends on 15) The wireless device of claim 15, wherein the processing circuitry is operable to interpret one or more parameters of the received system information differently for 5GS than for EPS by ignoring an EPS barring parameter and is operable to determine whether to connect to a core network of the one or more core networks by evaluating a 5GS barring parameter. ### Claim 17 (depends on 15) The wireless device of claim 15, wherein the processing circuitry is operable to interpret one or more parameters of the received system information differently for 5GS by obtaining an indication that one or more information elements of the system information are to be interpreted according to 5GS. ### Claim 18 (depends on 15) The wireless device of claim 15, wherein the processing circuitry is operable to obtain the indication that one or more information elements are to be interpreted according to 5GS by at least one of receiving dedicated signaling or broadcast signaling from the network node. ### Claim 19 (depends on 15) The wireless device of claim 15, wherein the processing circuitry is operable to obtain the indication that one or more information elements are to be interpreted according to 5GS by determining that the wireless device is connected to a 5GS core network. ### Claim 20 (depends on 14) The wireless device of claim 14, wherein when the processing circuitry determines the wireless device is capable of connecting to a 5GS core network type, the processing circuitry is further operable to acquire 5GS specific system information blocks. ### Claim 21 A method for use in a network node of providing system information associated with a core network, the method comprising: determining the network node is connected to one or more core networks; and transmitting system information, the system information including an indication of a network type for each core network of the one or more core networks, wherein the indication of the network type for each core network of the one or more core networks comprises a list of identifiers of one or more public land mobile networks (PLMNs) connected to the network node and an indication of one or more network types supported by each PLMN of the one or more PLMNs. ### Claim 22 (depends on 21) The method of claim 21, wherein the indication of the network type for each core network of the one or more core networks is in system information block one (SIB1) or system information block two (SIB2). ### Claim 23 (depends on 21) The method of claim 21, wherein the network type for each core network of the one or more core networks comprises one of an enhanced packet system (EPS) core network type and a fifth generation system (5GS) core network type. ### Claim 24 (depends on 21) The method of claim 21, wherein a core network of the one or more core networks is a 5GS core network and the system information for the core network includes parameters that have a different meaning with respect to 5GS than with respect to EPS. ### Claim 25 (depends on 21) The method of claim 21, wherein a core network of the one or more core networks is a 5GS core network and the system information for the core network includes 5GS specific system information blocks. ### Claim 26 (depends on 24) The method of claim 24, further comprising transmitting an indication that one or more information elements of the system information are to be interpreted according to 5GS. ### Claim 27 (depends on 26) The method of claim 26, wherein transmitting the indication that one or more information elements are to be interpreted according to 5GS comprises transmitting dedicated signaling or transmitting broadcast signaling. ### Claim 28 A network node capable of providing system information associated with a core network, the network node comprising processing circuitry operable to: determine the network node is connected to one or more core networks; and transmit system information, the system information including an indication of a network type for each core network of the one or more core networks, wherein the indication of the network type for each core network of the one or more core networks comprises a list of identifiers of one or more public land mobile networks (PLMNs) connected to the network node and an indication of one or more network types supported by each PLMN of the one or more PLMNs. ### Claim 29 (depends on 28) The network node of claim 28, wherein the indication of the network type for each core network of the one or more core networks is in system information block one (SIB1) or system information block two (SIB2). ### Claim 30 (depends on 28) The network node of claim 28, wherein the network type for each core network of the one or more core networks comprises one of an enhanced packet system (EPS) core network type and a fifth generation system (5GS) core network type. ### Claim 31 (depends on 28) The network node of claim 28, wherein a core network of the one or more core networks is a 5GS core network and the system information for the core network includes parameters that have a different meaning with respect to 5GS than with respect to EPS. ### Claim 32 (depends on 28) The network node of claim 28, wherein a core network of the one or more core networks is a 5GS core network and the system information for the core network includes 5GS specific system information blocks. ### Claim 33 (depends on 31) The network node of claim 31, the processing circuitry further operable to transmit an indication that one or more information elements of the system information are to be interpreted according to 5GS. ### Claim 34 (depends on 33) The network node of claim 33, wherein the processing circuitry is operable to transmit the indication that one or more information elements are to be interpreted according to 5GS by transmitting dedicated signaling or transmitting broadcast signaling.