# US 10,772,152 B2 · Simultaneous camping and paging coordination in two different radio access technologies > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,772,152 B2 - Document ID: US10772152B2 - Status: Granted - Kind: B2 - Application number: 16/301,639 - Filed: 2016-05-17 - Published: 2019-09-12 - Granted: 2020-09-08 - Earliest claimed: 2016-05-17 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Johan Rune; Icaro L. J. Da Silva; Gunnar Mildh; Jose Luis Pradas; Jari Vikberg; Pontus Wallentin - Web page: https://patentgrep.com/patent/US10772152B2 ## CPC - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - H04L 27/2605: {Symbol extensions, e.g. Zero Tail, Unique Word [UW]} - H04W 68/005: {Transmission of information for alerting of incoming communication} - H04W 68/02: Arrangements for increasing efficiency of notification or paging channel - H04W 68/12: Inter-network notification - H04W 72/1215: {for collaboration of different radio technologies} - H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer - 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 The present invention relates to paging coordination in a wireless communication network that provides radio access for a terminal device via at least a first and second wireless radio access operating with different radio access technologies. The improved paging coordination is achieved by setting a common paging occasion configuration for the at least first and second radio access technologies, and paging (S130) the terminal device (10) via the first and/or the second radio access technologies according to the common paging occasion configuration. ## Claims ### Claim 1 A method in a wireless communication network, the wireless communication network providing radio access for a terminal device via at least a first and second type of wireless radio accesses operating with different radio access technologies, wherein the method comprises: setting a common paging occasion configuration for the at least first and second radio access technologies, wherein setting the common paging occasion configuration is based on a difference in radio frame length between the first and second radio access technologies; and paging the terminal device via the first and/or the second radio access technologies according to the common paging occasion configuration. ### Claim 2 (depends on 1) The method of claim 1, wherein the common paging occasion configuration defines a repetitively occurring common wake period of the terminal device for the at least first and second radio access technologies. ### Claim 3 (depends on 1) The method of claim 1, wherein the common paging occasion configuration defines a repetitively occurring common sleep period of the terminal device for the at least first and second radio access technologies. ### Claim 4 (depends on 1) The method of claim 1, wherein the common paging occasion configuration defines a first paging time unit for the first radio access technology and a second paging time unit for the first radio access technology. ### Claim 5 (depends on 4) The method of claim 4, wherein the first paging time unit and the second paging time unit are arranged such that the common wake period of the terminal device has a minimum duration. ### Claim 6 (depends on 5) The method of claim 5, wherein the first paging time unit and the second paging time unit occur simultaneously. ### Claim 7 (depends on 2) The method of claim 2, wherein the first paging time unit and the second paging time unit are separated by a guard time. ### Claim 8 (depends on 1) The method of claim 1, further comprising negotiating, between a network node of the wireless communication network and the terminal device, the common paging occasion configuration. ### Claim 9 (depends on 1) The method of claim 1, wherein the setting of the common paging occasion configuration is further based on a stability of an internal clock of the terminal device. ### Claim 10 (depends on 1) The method of claim 1, further comprising instructing a radio access network node to page the terminal device according to the common paging occasion configuration at an exact time or within a specific time window. ### Claim 11 (depends on 1) The method of claim 1, wherein the common paging occasion configuration is set according to capabilities of the terminal device. ### Claim 12 (depends on 1) The method of claim 1, further comprising synchronizing of radio frame numbers across the first and second radio access technologies. ### Claim 13 (depends on 12) The method of claim 12, wherein the synchronizing of the radio frame numbers is based on an association of a first time unit in the first radio access technology with a second time unit in the second radio access technology divided by an integer number. ### Claim 14 (depends on 13) The method of claim 13, wherein the synchronizing of the radio frame numbers is further based on equal radio frame cycles in both the first and second radio access technology, or is further based on a same number of radio frames in both radio frame cycles of the first and second radio access technology. ### Claim 15 (depends on 1) The method of claim 1, further comprising reporting, to the terminal device, radio frame number differences between the first and second radio access technologies. ### Claim 16 A method in a terminal device accessible via at least a first and second type of wireless radio accesses operating with different radio access technologies, wherein the method comprises: obtaining a common paging occasion configuration setting for the at least the first and second radio access technologies, wherein the common paging occasion configuration setting is based on a difference in radio frame length between the first and second radio access technologies; and operating the terminal device to receive a paging via the first and/or the second radio access technologies according to the common paging occasion configuration. ### Claim 17 (depends on 16) The method of claim 16, further comprising transferring a stored common paging occasion configuration to a network node. ### Claim 18 (depends on 16) The method of claim 16, further comprising selecting whether to monitor only one or both of paging occasions defined by the first and second paging time units defined according to the common paging occasion configuration. ### Claim 19 (depends on 16) The method of claim 16, further comprising maintaining a clock to keep track of repetitively occurring common sleep periods of the common paging occasion configuration by associating a first time unit of the first radio access technology with a second time unit of the second radio access technology divided by an integer number.