# US 2019/0357260 A1 · Random Access Procedures Using Multiple Active Bandwidth Parts > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0357260 A1 - Document ID: US20190357260A1 - Status: Published application - Kind: A1 - Application number: 16/418,078 - Filed: 2019-05-21 - Published: 2019-11-21 - Earliest claimed: 2018-05-21 - Assignees: Comcast Cable Communications, LLC - Applicants: Comcast Cable Communications, LLC - Inventors: Ali Cirik; Esmael Hejazi Dinan; Hua Zhou; Hyoungsuk Jeon; Alireza Babaei - Web page: https://patentgrep.com/patent/US20190357260A1 ## CPC - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 72/04: Wireless resource allocation - H04L 5/0092: {Indication of how the channel is divided} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 74/02: Hybrid access - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 76/11: Allocation or use of connection identifiers - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 80/02: Data link layer protocols - H04W 74/0836: with 2-step access - H04W 74/0838: using contention-free random access [CFRA] - Y02D 30/70: in wireless communication networks - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - 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 Wireless communications using multiple active resources (e.g., bandwidth parts (BWP)) are described. A predetermined rule may be used to determine on which downlink (DL) BWP of multiple active DL BWPs, and/or on which uplink (UL) BWP of multiple active UL BWPs, a message is to be sent. A wireless device and/or a base station may reduce the quantity of active DL BWPs and/or active UL BWPs to monitor for a response. ## Claims ### Claim 1 A method comprising: receiving, by a wireless device, one or more configuration parameters of a primary cell and a secondary cell, wherein the primary cell comprises a plurality of downlink bandwidth parts (BWPs); activating at least two downlink BWPs of the plurality of downlink BWPs; sending a random access preamble for a random access procedure; determining a downlink BWP, of the at least two downlink BWPs, for monitoring for a random access response to the random access preamble; monitoring the determined BWP for the random access response; and receiving, via the determined downlink BWP, the random access response. ### Claim 2 (depends on 1) The method of claim 1, further comprising: receiving one or more configuration parameters for a plurality of uplink BWPs; and activating at least two uplink BWPs of the plurality of uplink BWPs. ### Claim 3 (depends on 1) The method of claim 1, further comprising: determining an uplink BWP, of at least two activated uplink BWPs, for the random access procedure, wherein the sending the random access preamble comprises sending the random access preamble via the determined uplink BWP. ### Claim 4 (depends on 1) The method of claim 1, wherein the determining the downlink BWP for the monitoring comprises determining a downlink BWP associated with at least one of: a lowest or highest downlink BWP-specific index relative to each downlink BWP-specific index associated with the at least two downlink BWPs; or a lowest or highest BWP-specific numerology relative to each BWP-specific numerology associated with the at least two downlink BWPs. ### Claim 5 (depends on 1) The method of claim 1, wherein the determining the downlink BWP for the monitoring comprises determining a downlink BWP of the at least two downlink BWPs that is a primary BWP of the primary cell. ### Claim 6 (depends on 1) The method of claim 1, further comprising receiving a physical downlink control channel (PDCCH) order, for initiating the random access procedure, that indicates information on which to base the determining the downlink BWP for the monitoring. ### Claim 7 (depends on 1) The method of claim 1, wherein the random access procedure is for the secondary cell. ### Claim 8 A method comprising: receiving, by a wireless device, one or more configuration parameters of a cell, wherein the cell comprises a plurality of uplink bandwidth parts (BWPs); activating at least two uplink BWPs of the plurality of uplink BWPs; determining an uplink BWP, of the at least two uplink BWPs, for a random access procedure; and sending, via the uplink BWP, a random access preamble. ### Claim 9 (depends on 8) The method of claim 8, further comprising: determining, based on the determined uplink BWP, a downlink BWP for monitoring for a random access response; and receiving, via the determined downlink BWP, the random access response. ### Claim 10 (depends on 8) The method of claim 8, wherein the determining the uplink BWP for the random access procedure comprises at least one of: determining an uplink BWP with an earliest random access occasion relative random access occasions associated with the at least two uplink BWPs; or determining an uplink BWP with a lowest path loss relative to path losses associated with the at least two uplink BWPs. ### Claim 11 (depends on 8) The method of claim 8, wherein the determining the uplink BWP for the random access procedure comprises determining an uplink BWP associated with at least one of: a lowest or highest downlink BWP-specific index relative to each downlink BWP-specific index associated with the at least two uplink BWPs; or a lowest or highest BWP-specific numerology relative to each BWP-specific numerology associated with the at least two uplink BWPs. ### Claim 12 (depends on 8) The method of claim 8, wherein the determining the uplink BWP for the random access procedure comprises determining an uplink BWP of the at least two uplink BWPs that is a primary BWP of a primary cell. ### Claim 13 (depends on 8) The method of claim 8, further comprising: receiving a physical downlink control channel (PDCCH) order, wherein the PDCCH order indicates information for the determining the uplink BWP for the random access procedure. ### Claim 14 (depends on 8) The method of claim 8, wherein the random access procedure is for a secondary cell. ### Claim 15 A method comprising: receiving, by a wireless device, one or more configuration parameters of a primary cell and a secondary cell, wherein the primary cell comprises a plurality of bandwidth parts (BWPs); activating at least two BWPs of the plurality of BWPs; determining, based on one or more criteria and from the at least two BWPs, a first activated BWP for a random access procedure and a second activated BWP for the random access procedure; sending, via the first activated BWP, a random access preamble for the random access procedure; monitoring the second activated BWP for a random access response; and receiving, via the second activated BWP, the random access response. ### Claim 16 (depends on 15) The method of claim 15, wherein the first activated BWP is an uplink BWP and the second activated BWP is a downlink BWP. ### Claim 17 (depends on 15) The method of claim 15, wherein the determining the second active BWP comprises determining a downlink BWP associated with at least one of: a lowest or highest downlink BWP-specific index relative to each downlink BWP-specific index associated with the at least two BWPs; or a lowest or highest BWP-specific numerology relative to each BWP-specific numerology associated with the at least two BWPs. ### Claim 18 (depends on 15) The method of claim 15, wherein the determining the first activated BWP and the second activate BWP comprises at least one of: determining a downlink BWP of the at least two BWPs that is a primary downlink BWP of the primary cell; or determining an uplink BWP of the at least two BWPs that is a primary uplink BWP of the primary cell. ### Claim 19 (depends on 15) The method of claim 15, further comprising receiving a physical downlink control channel (PDCCH) order, for initiating the random access procedure, that indicates indicating information on which to base the determining the first activated BWP and the second activated BWP. ### Claim 20 (depends on 15) The method of claim 15, wherein the random access procedure is for the secondary cell.