# US 2014/0153467 A1 · Paging over a high-speed downlink shared channel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153467 A1 - Document ID: US20140153467A1 - Status: Published application - Kind: A1 - Application number: 14/172,318 - Filed: 2014-02-04 - Published: 2014-06-05 - Earliest claimed: 2007-02-05 - Assignees: InterDigital Technology Corporation - Applicants: InterDigital Technology Corporation - Inventors: Rocco Di Girolamo; Diana Pani; Christopher Cave; Alexander Reznik - Web page: https://patentgrep.com/patent/US20140153467A1 ## CPC - H04W 68/025: {Indirect paging} - H04W 52/0209: {in terminal devices} - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract An apparatus and methods are provided for paging in a HSDPA connected mode CELL_PCH or URA_PCH state. Preferably, a WTRU is configured to select various PICH information that is broadcast by a base station. The WTRU is preferably configured to receive paging messages, based on the selected PICH information. In one embodiment, a preferred WTRU is configured to receive paging messages, based on a PICH, a HS-SCCH, and a HS-PDSCH. In another embodiment, a preferred WTRU is configured to receive paging messages, based on a PICH and a HS-PDSCH. In both embodiments, a time delay parameter is preferably used so that the WTRU may listen for either the HS-SCCH or HS-PDSCH for a period of time and return to a sleep mode if no paging message is received. ## Claims ### Claim 1 A method for a wireless transmit/receive unit, WTRU, to facilitate paging in high speed downlink packet access (HSDPA) wireless communications, the method comprising: when the WTRU is operating in CELL PCH or URA PCH state: receiving, from a base station, HSDPA associated paging indicator channel (PICH) information elements comprising PICH information, compiling a list of candidate PICHs for HSDPA after receiving the information elements, determining a value k corresponding to a number of candidates, calculating a selection index equal to: U_RNTI mod k, where U RNTI is a universal mobile telecommunications system (UMTS) terrestrial radio access network (UTRAN) radio network transaction identity (U-RNTI) of the WTRU, and selecting a PICH information from the list of candidate PICHs based on the selection index; awakening from a sleep mode during paging occasions derived from the PICH information; monitoring for a paging indicator over a PICH using the selected PICH information; monitoring for a message on a high speed physical downlink shared channel (HS-PDSCH) using a common high speed downlink shared channel (HS-DSCH) radio network transaction identity (H-RNTI); and returning to the sleep mode, if no message is detected over the HS-PDSCH. ### Claim 2 (depends on 1) The method of claim 1, wherein the monitoring for the message comprises: monitoring, after waiting a delay period, for reception of the message. ### Claim 3 (depends on 2) The method of claim 2, wherein the delay period is based on a predetermined minimum time and a maximum time based on the received PICH information. ### Claim 4 A wireless transmit/receive unit, WTRU, configured for high speed downlink packet access (HSDPA) wireless communications, the WTRU configured at least in part to: when the WTRU is operating in CELL PCH or URA PCH state: receive, from the base station, HSDPA associated paging indicator channel (PICH) information elements comprising PICH information, compile a list of candidate PICHs for HSDPA using the information elements, determine a value k corresponding to a number of candidates, calculate a selection index equal to: U_RNTI mod k, where U RNTI is a universal mobile telecommunications system (UMTS) terrestrial radio access network (UTRAN) radio network transaction identity (U-RNTI) of the WTRU; and select a PICH information from the list of candidate PICHs based on the selection index; awaken from a sleep mode during paging occasions derived from the PICH information; monitor for a paging indicator over a PICH using the selected PICH information; monitor for a message on a high speed physical downlink shared channel (HS-PDSCH) using a common high speed downlink shared channel (HS-DSCH) radio network transaction identity (H-RNTI); and return to the sleep mode, if no message is detected over the HS-PDSCH. ### Claim 5 (depends on 4) The WTRU of claim 4, wherein the WTRU is configured to: receive the common H-RNTI; and receive the message on the HS-PDSCH using the received common H-RNTI. ### Claim 6 (depends on 5) The WTRU of claim 5, wherein the WTRU is configured to: monitor, after waiting a delay period, for reception of the message. ### Claim 7 (depends on 6) The WTRU of claim 6, wherein the delay period is based on a predetermined minimum time and a maximum time based on the received PICH information. ### Claim 8 A method for a wireless transmit/receive unit, WTRU, to facilitate paging in high speed downlink packet access (HSDPA) wireless communications, the method comprising: when the WTRU is in one of a CELL PCH and URA PCH state: receiving, from a base station, HSDPA associated paging indicator channel (PICH) information elements comprising PICH information, compiling a list of candidate PICHs for HSDPA after receiving the information elements, determining a value k corresponding to a number of candidates; calculating a selection index equal to: U_RNTI mod k, where U RNTI is a universal mobile telecommunications system (UMTS) terrestrial radio access network (UTRAN) radio network transaction identity (U-RNTI) of the WTRU, and selecting a PICH information from the list of candidate PICHs based on the selection index; awakening from a sleep mode during paging occasions derived from the PICH information; monitoring for a paging indicator over a PICH using the selected PICH information; monitoring for a high speed downlink shared channel (HS-DSCH) radio network transaction identity (H-RNTI); monitoring a high speed shared channel using the received H-RNTI; and returning to the sleep mode, if no H-RNTI is received. ### Claim 9 (depends on 8) The method of claim 8, further comprising: receiving the H-RNTI; and receiving a high speed physical downlink shared channel (HS-PDSCH) based on the received H-RNTI. ### Claim 10 (depends on 8) The method of claim 8, wherein the monitoring for the H-RNTI comprises: monitoring a high speed shared channel, after waiting a delay period, for reception of the H-RNTI. ### Claim 11 (depends on 10) The method of claim 10, wherein the delay period is based on a predetermined minimum time and a maximum time based on the received PICH information. ### Claim 12 A wireless transmit/receive unit, WTRU, configured for high speed downlink packet access (HSDPA) wireless communications, the WTRU configured at least in part to: when the WTRU is in one of a CELL PCH and URA PCH state: receive, from the base station, HSDPA associated paging indicator channel (PICH) information elements comprising PICH information, compile a list of candidate PICHs for HSDPA after receiving the information elements, determine a value k corresponding to a number of candidates, calculate a selection index equal to: U_RNTI mod k, where U RNTI is a universal mobile telecommunications system (UMTS) terrestrial radio access network (UTRAN) radio network transaction identity (U-RNTI) of the WTRU, and select a PICH information from the list of candidate PICHs based on the selection index; awaken from a sleep mode during paging occasions derived from the PICH information; monitor for a paging indicator over a PICH using the selected PICH information; monitor for a high speed downlink shared channel (HS-DSCH) radio network transaction identity (H-RNTI); monitor a high speed shared channel using the received H-RNTI; and return to the sleep mode, if no H-RNTI is received. ### Claim 13 (depends on 12) The WTRU of claim 12, wherein the WTRU is configured to: receive the H-RNTI; and receive a high speed physical downlink shared channel (HS-PDSCH) based on the received H-RNTI. ### Claim 14 (depends on 12) The WTRU of claim 12, wherein the WTRU is configured to: monitor, after waiting a delay period, for reception of the H-RNTI. ### Claim 15 (depends on 14) The WTRU of claim 14, wherein the delay period is based on a predetermined minimum time and a maximum time based on the received PICH information.