# US 11,310,738 B2 · Enhanced machine type communication radio resource management requirements based on machine type communication physical downlink control channel monitoring > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,738 B2 - Document ID: US11310738B2 - Status: Granted - Kind: B2 - Application number: 16/337,752 - Filed: 2016-09-30 - Published: 2021-09-23 - Granted: 2022-04-19 - Earliest claimed: 2016-09-30 - Assignees: Nokia Solutions and Networks Oy - Applicants: Nokia Solutions and Networks Oy - Inventors: Lars Dalsgaard; Li Zhang; Ren Da - Web page: https://patentgrep.com/patent/US11310738B2 ## CPC - H04W 52/0229: {where the received signal is a wanted signal} - H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC] - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - H04W 24/08: Testing, {supervising or monitoring} using real traffic - 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 Various communication systems may benefit from appropriate configuration of when a device is required to be active. For example, enhanced machine type communication radio resource management requirements regarding device activity can be aligned with machine type communication physical downlink control channel monitoring. A method can include determining a discontinuous reception usage state of a user equipment. The method can also include selecting a monitoring performance requirement from a plurality of monitoring performance requirements based on the determined discontinuous reception usage stage. The method can further include power saving in accordance with the selected monitoring performance requirement. ## Claims ### Claim 1 A method, comprising: determining a discontinuous reception usage state of a user equipment, wherein the discontinuous reception usage state comprises a general discontinuous reception state, a machine type communication physical downlink control channel discontinuous reception state, or both a general discontinuous reception state and a machine type communication physical downlink control channel discontinuous reception state; selecting a monitoring performance requirement from a plurality of monitoring performance requirements based on the determined discontinuous reception usage state, wherein when it is determined that the user equipment is in the general discontinuous reception state and is in the machine type communication physical downlink control channel discontinuous reception state, the selecting comprises selecting a requirement for the user equipment to follow standard monitoring performance requirements modified to replace the discontinuous reception cycle with the greater of a discontinuous reception cycle time period and a machine type communication physical downlink control channel monitoring time period, wherein the machine type communication physical downlink control channel monitoring time period is G*R, wherein G is a configured parameter for controlling a machine type communication physical downlink control channel, and R is a maximum reception level of machine type communication physical downlink control channel; and power saving in accordance with the selected monitoring performance requirement. ### Claim 2 (depends on 1) The method of claim 1, wherein the monitoring performance requirements comprise requirements for monitoring for radio resource management or radio link monitoring. ### Claim 3 (depends on 1) The method of claim 1, wherein when it is determined that the user equipment is in the general discontinuous reception state and is not in the machine type communication physical downlink control channel discontinuous reception state, the selecting comprises selecting a requirement for the user equipment to follow standard monitoring performance requirements. ### Claim 4 (depends on 1) The method of claim 1, wherein when it is determined that that the user equipment is not in the general discontinuous reception state and is in the machine type communication physical downlink control channel discontinuous reception state, the selecting comprises selecting a requirement for the user equipment to follow standard monitoring performance requirements modified to replace the discontinuous reception cycle with a machine type communication physical downlink control channel monitoring time period, wherein the machine type communication physical downlink control channel monitoring time period is G*R, wherein G is a configured parameter for controlling a machine type communication physical downlink control channel, and R is a maximum reception level of machine type communication physical downlink control channel. ### Claim 5 (depends on 1) The method of claim 1, further comprising: determining that the user equipment is not in the machine type communication physical downlink control channel discontinuous reception state when G is equal to 1, wherein G is a configured parameter for controlling a machine type communication physical downlink control channel. ### Claim 6 (depends on 1) The method of claim 1, further comprising: determining that the user equipment is not in the machine type communication physical downlink control channel discontinuous reception state when G is greater than 1, and a further predetermined condition is met, wherein G is a configured parameter for controlling a machine type communication physical downlink control channel. ### Claim 7 (depends on 6) The method of claim 6, wherein the further predetermined condition comprises whether a subframe is within a configured window for monitoring machine type communication physical downlink control channel, wherein the length of the window is same as maximum repetition level of the user equipment. ### Claim 8 (depends on 6) The method of claim 6, wherein the further predetermined condition comprises whether a subframe is after a configured window for monitoring machine type communication physical downlink control channel and the user equipment is scheduled in the subframe. ### Claim 9 (depends on 6) The method of claim 6, wherein the further predetermined condition comprises that the user equipment is required to conduct an uplink transmission or downlink reception. ### Claim 10 (depends on 1) The method of claim 1, further comprising: determining that the user equipment is in the machine type communication physical downlink control channel discontinuous reception state if a subframe is outside a maximum machine type communication physical downlink control channel monitoring window and the user equipment is not scheduled in the subframe. ### Claim 11 (depends on 1) The method of claim 1, further comprising: determining that the user equipment is in the machine type communication physical downlink control channel discontinuous reception state when the user equipment detects that the user equipment is not scheduled by machine type communication physical downlink control channel. ### Claim 12 (depends on 1) The method of claim 1, wherein the selecting a monitoring performance requirement is further contingent on whether G*R is greater than a configured measurement gap repetition period, wherein G is a configured parameter for controlling a machine type communication physical downlink control channel, and R is a maximum reception level of machine type communication physical downlink control channel. ### Claim 13 An apparatus comprising: at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: determine a discontinuous reception usage state of a user equipment, wherein the discontinuous reception usage state comprises a general discontinuous reception state, a machine type communication physical downlink control channel discontinuous reception state, or both a general discontinuous reception state and a machine type communication physical downlink control channel discontinuous reception state; select a monitoring performance requirement from a plurality of monitoring performance requirements based on the determined discontinuous reception usage state, wherein when it is determined that the user equipment is in the general discontinuous reception state and is in the machine type communication physical downlink control channel discontinuous reception state, the selecting comprises selecting a requirement for the user equipment to follow standard monitoring performance requirements modified to replace the discontinuous reception cycle with the greater of a discontinuous reception cycle time period and a machine type communication physical downlink control channel monitoring time period, wherein the machine type communication physical downlink control channel monitoring time period is G*R, wherein G is a configured parameter for controlling a machine type communication physical downlink control channel, and R is a maximum reception level of machine type communication physical downlink control channel; and power save in accordance with the selected monitoring performance requirement. ### Claim 14 A computer program embodied on a non-transitory computer readable medium, said computer program comprising a set of instructions, execution of which by a processor configures an apparatus to at least: determine a discontinuous reception usage state of a user equipment, wherein the discontinuous reception usage state comprises a general discontinuous reception state, a machine type communication physical downlink control channel discontinuous reception state, or both a general discontinuous reception state and a machine type communication physical downlink control channel discontinuous reception state; select a monitoring performance requirement from a plurality of monitoring performance requirements based on the determined discontinuous reception usage state, wherein when it is determined that the user equipment is in the general discontinuous reception state and is in the machine type communication physical downlink control channel discontinuous reception state, the selecting comprises selecting a requirement for the user equipment to follow standard monitoring performance requirements modified to replace the discontinuous reception cycle with the greater of a discontinuous reception cycle time period and a machine type communication physical downlink control channel monitoring time period, wherein the machine type communication physical downlink control channel monitoring time period is G*R, wherein G is a configured parameter for controlling a machine type communication physical downlink control channel, and R is a maximum reception level of machine type communication physical downlink control channel; and power save in accordance with the selected monitoring performance requirement.