# US 2020/0288506 A1 · Techniques for supporting co-existence between 2-step random access and 4-step random access > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288506 A1 - Document ID: US20200288506A1 - Status: Published application - Kind: A1 - Application number: 16/790,683 - Filed: 2020-02-13 - Published: 2020-09-10 - Earliest claimed: 2019-02-15 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Jing LEI; Linhai HE; Joseph Binamira SORIAGA; Wanshi CHEN; Peter GAAL; Hung Dinh LY; Tingfang JI; Seyong PARK - Web page: https://patentgrep.com/patent/US20200288506A1 ## CPC - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 74/0836: with 2-step access - H04W 74/0838: using contention-free random access [CFRA] - 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 Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE) in a network supporting co-existence of a first type of random access and a second type of random access, which may be associated with different latency, overhead, quality of service (QoS), energy efficiency, and/or spectral efficiency. ## Claims ### Claim 1 A method for wireless communications by a user equipment (UE) in a network supporting co-existence of a first type of random access and a second type of random access, comprising: receiving configuration information from one or more base stations in the network, the configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access; and performing the first type of random access with at least one base station of the one or more base stations based, at least in part, on the configuration information, wherein the performing the first type of random access comprises: transmitting a first message to the at least one base station to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload; and receiving a second message associated with completion of the first type of random access, the second message transmitted by the at least one base station in response to the first message. ### Claim 2 (depends on 1) The method of claim 1, wherein the second type of random access comprises: transmission of a message 1 (msg 1) to the at least one base station to initiate the second type of random access, the msg1 comprising a preamble; reception of a message 2 (msg 2) associated with a random access response, the msg2 transmitted by the at least one base station in response to the msg1; transmission of a message 3 (msg3), in response to the msg2, to the at least one base station, the msg3 comprising information transmitted on an uplink shared channel; and reception of a message 4 (msg4) associated with completion of the second type of random access, the msg4 transmitted by the at least one base station in response to the msg3. ### Claim 3 (depends on 1) The method of claim 1, further comprising receiving the configuration information in: a system information block (SIB), a master information block (MIB), a radio resource control (RRC) message, or a combination thereof. ### Claim 4 (depends on 3) The method of claim 3, wherein the SIB is scrambled by a group radio network temporary identifier (RNTI) for the first type of random access. ### Claim 5 (depends on 2) The method of claim 2, wherein the one or more RACH occasions comprise at least one of time, frequency, or space resource for initiating the first type or the second type of random access. ### Claim 6 (depends on 2) The method of claim 2, wherein the preamble of the first type of random access comprises: a preamble sequence from a subset of one or more preamble sequences for the second type of random access, a preamble sequence other than the one or more preamble sequences for the second type of random access, or a combination thereof. ### Claim 7 (depends on 6) The method of claim 6, wherein the one or more RACH occasions comprise one or more RACH occasions for the first type of random access and occupy a subset of RACH occasions normally for the second type of random access, and wherein the subset of RACH occasions is for the one or more RACH occasions for the first type of random access only. ### Claim 8 (depends on 7) The method of claim 7, wherein the subset of RACH occasions for the first type of random access comprises a reduced periodicity, a reduced duty cycle, or a reduced density relative to the RACH occasions normally for the second type of random access. ### Claim 9 (depends on 8) The method of claim 8, wherein the one or more RACH occasions comprise: one or more RACH occasions for the first type of random access in a first field of a system information block (SIB), one or more RACH occasions for the second type of random access in a second field of the SIB, or a combination thereof. ### Claim 10 (depends on 9) The method of claim 9, wherein the one or more RACH occasions for the second type of random access are used by a UE initiating the second type of random access, and wherein the initiating the second type of random access comprises a reduced periodicity, a reduced duty cycle, or a reduced density relative to the RACH occasions normally for the second type of random access. ### Claim 11 (depends on 9) The method of claim 9, further comprising: determining the one or more RACH occasions for the first type of random access and the one or more RACH occasions for the second type of random access based on the configuration information; and transmitting the first message in the determined one or more RACH occasions for the first type of random access and not in the determined one or more RACH occasions for the second type of random access. ### Claim 12 (depends on 7) The method of claim 7, wherein the configuration information further comprises at least one parameter indicating at least one of: the number of synchronization signal/physical broadcast channel (PBCH) blocks (SSBs), the number of contention-based preambles for each SSB, or a combination thereof. ### Claim 13 (depends on 7) The method of claim 7, wherein a first preamble format for the first type of random access is different from a second preamble format for the second type of random access. ### Claim 14 (depends on 7) The method of claim 7, wherein the configuration information further comprises at least one parameter specifically for the first type of random access. ### Claim 15 (depends on 6) The method of claim 6, wherein the one or more RACH occasions comprise one or more RACH occasions for the first type of random access and occupy a subset of RACH occasions for the second type of random access, and wherein the subset of RACH occasions is for both the one or more RACH occasions for the first type of random access and the one or more RACH occasions for the second type of random access. ### Claim 16 (depends on 15) The method of claim 15, wherein the one or more RACH occasions for the first type of random access are sent in: system information, radio resource control (RRC) messaging, or a combination thereof, for a UE performing the first type of random access only. ### Claim 17 (depends on 15) The method of claim 15, wherein the preamble of the first type of random access comprises a preamble sequence other than the one or more preamble sequences for the second type of random access, and wherein the preamble of the first type of random access is selected from non-contention based random access (non-CBRA) preambles associated with each of one or more synchronization signal/physical broadcast channel (PBCH) blocks (SSBs). ### Claim 18 (depends on 15) The method of claim 15, wherein the number of the non-CBRA preambles associated with each SSB is configured by at least one parameter. ### Claim 19 (depends on 15) The method of claim 15, wherein the subset of RACH occasions for both the one or more RACH occasions for the first type of random access and the one or more RACH occasions for the second type of random access is configured by at least one parameter, and wherein the subset of RACH occasions is associated with a same synchronization signal/physical broadcast channel (PBCH) block (SSB) index. ### Claim 20 (depends on 6) The method of claim 6, wherein the one or more RACH occasions comprise one or more RACH occasions that are only for the first type of random access and that are different from RACH occasions configured by the at least one base station for the second type of random access. ### Claim 21 (depends on 20) The method of claim 20, wherein the one or more RACH occasions only for the first type of random access are sent in: system information, radio resource control (RRC) messaging, or a combination thereof, for a UE performing the first type of random access only. ### Claim 22 (depends on 20) The method of claim 20, wherein the configuration information further comprises at least one parameter indicating at least one of: the number of synchronization signal/physical broadcast channel (PBCH) blocks (SSBs), the number of contention-based preambles for each SSB, or a combination thereof. ### Claim 23 (depends on 20) The method of claim 20, wherein a first preamble format for the first type of random access is different from a second preamble format for the second type of random access. ### Claim 24 (depends on 20) The method of claim 20, wherein the configuration information further comprises at least one parameter specifically for the first type of random access. ### Claim 25 (depends on 2) The method of claim 2, wherein transmission of the payload of the first message is based, at least in part, on a modulation and coding scheme (MCS) for the payload, the MCS being: different from a MCS for the msg3 of the second type of random access, a subset of the MCS for the msg3, or a combination thereof. ### Claim 26 (depends on 25) The method of claim 25, wherein the MCS for the payload is based, at least in part, on a size of the payload, a resource allocation of the payload, a waveform of the payload, a coverage condition of the UE, or a combination thereof. ### Claim 27 (depends on 26) The method of claim 26, further comprising receiving the configuration information in: a system information block (SIB), a radio resource control (RRC) message, or a combination thereof, wherein the configuration information further comprises configuration for the MCS for the payload. ### Claim 28 (depends on 2) The method of claim 2, wherein the configuration information further comprises slot format information only for the first type of random access. ### Claim 29 (depends on 28) The method of claim 28, further comprising receiving the configuration information in; a system information block (SIB), a radio resource control (RRC) message, or a combination thereof. ### Claim 30 (depends on 28) The method of claim 28, wherein the slot format information indicates a slot-based structure for the first message, a symbol-based structure for the first message, or a combination thereof. ### Claim 31 (depends on 28) The method of claim 28, wherein the configuration information further comprises one or more indications of: the number of slots containing one or more physical uplink shared channel (PUSCH) occasions and the number of time domain PUSCH occasions in each slot of the number of slots, and wherein each slot of the number of slots has a same time domain resource allocation. ### Claim 32 (depends on 28) The method of claim 28, wherein physical uplink shared channel (PUSCH) occasions that include a guard period are contiguous in time domain within a slot. ### Claim 33 (depends on 1) The method of claim 1, wherein the configuration information further comprises at least one of guard band configuration or guard time configuration for the preamble and for the payload of the first message of the first type of random access. ### Claim 34 (depends on 33) The method of claim 33, wherein the at least one of the guard band configuration or the guard time configuration for the preamble of the first message is same as guard band configuration or guard time configuration for the preamble of the msg 1 of the second type of random access, respectively. ### Claim 35 (depends on 33) The method of claim 33, wherein the at least one of the guard band configuration or the guard time configuration for the payload is same as the at least one of the guard band configuration or guard time configuration for the preamble of the first message, respectively. ### Claim 36 (depends on 33) The method of claim 33, wherein the at least one of the guard band configuration or the guard time configuration for the payload is different from the at least one guard band configuration or guard time configuration for the preamble of the first message, respectively. ### Claim 37 (depends on 33) The method of claim 33, wherein the guard band configuration for the payload comprises a physical resource block (PRB). ### Claim 38 (depends on 33) The method of claim 33, wherein the at least one of guard band configuration or guard time configuration for the preamble and for the payload of the first message is: received in a system information block (SIB), received in a master information block (MIB), received in a radio resource control (RRC) message, specified in a standard, or a combination thereof. ### Claim 39 (depends on 33) The method of claim 33, wherein intra-slot frequency hopping for each physical uplink shared channel (PUSCH) occasion of the first message is configured, and wherein a guard time between hops of the intra-slot frequency hopping is configurable. ### Claim 40 (depends on 1) The method of claim 1, wherein the UE comprises an Internet-of-Things (IoT) UE. ### Claim 41 A method for wireless communications by a base station (BS) in a network supporting co-existence of a first type of random access and a second type of random access, comprising: determining configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access; transmitting the configuration information to one or more user equipments (UEs) in the network; and performing the first type of random access with at least one UE of the one or more UEs based, at least in part, on the configuration information, wherein performing the first type of random access comprises: receiving a first message from the at least one UE to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload; and transmitting to the at least one UE, in response to the first message, a second message associated with completion of the first type of random access. ### Claim 42 (depends on 41) The method of claim 41, wherein the second type of random access comprises: reception of a message 1 (msg 1) from the at least one UE to initiate the second type of random access, the msg1 comprising a preamble; transmission of a message 2 (msg 2) associated with a random access response to the at least one UE, the msg2 transmitted by the base station in response to the msg1; reception of a message 3 (msg3) from the at least one UE in response to the msg2, the msg3 comprising information transmitted on an uplink shared channel; and transmission of a message 4 (msg4) associated with completion of the second type of random access to the at least one UE, in response to the msg3. ### Claim 43 (depends on 41) The method of claim 41, further comprising transmitting the configuration information in: a system information block (SIB), a master information block (MIB), a radio resource control (RRC) message, or a combination thereof. ### Claim 44 (depends on 43) The method of claim 43, further comprising scrambling the SIB by a group radio network temporary identifier (RNTI) for the first type of random access. ### Claim 45 (depends on 42) The method of claim 42, wherein the one or more RACH occasions comprise at least one of time, frequency, or space resource for initiating the first type or the second type of random access. ### Claim 46 (depends on 42) The method of claim 42, wherein the preamble of the first type of random access comprises: a preamble sequence from a subset of one or more preamble sequences for the second type of random access, a preamble sequence other than the one or more preamble sequences for the second type of random access, or a combination thereof. ### Claim 47 (depends on 46) The method of claim 46, wherein the one or more RACH occasions comprise one or more RACH occasions for the first type of random access and occupy a subset of RACH occasions normally for the second type of random access, and wherein the subset of RACH occasions is for the one or more RACH occasions for the first type of random access only. ### Claim 48 (depends on 47) The method of claim 47, wherein the subset of RACH occasions for the first type of random access comprises a reduced periodicity, a reduced duty cycle, or a reduced density relative to the RACH occasions normally for the second type of random access. ### Claim 49 (depends on 48) The method of claim 48, wherein the one or more RACH occasions comprise: one or more RACH occasions for the first type of random access in a first field of a system information block (SIB), one or more RACH occasions for the second type of random access in a second field of the SIB, or a combination thereof. ### Claim 50 (depends on 49) The method of claim 49, wherein the one or more RACH occasions for the second type of random access are used by a UE initiating the second type of random access, and wherein the initiating the second type of random access comprises a reduced periodicity, a reduced duty cycle, or a reduced density relative to the RACH occasions normally for the second type of random access. ### Claim 51 (depends on 49) The method of claim 49, wherein the at least one UE determines the one or more RACH occasions for the first type of random access and the one or more RACH occasions for the second type of random access based on the configuration information, and further comprising: receiving the first message from the at least one UE in the determined one or more RACH occasions for the first type of random access and not in the determined one or more RACH occasions for the second type of random access. ### Claim 52 (depends on 47) The method of claim 47, wherein the configuration information further comprises at least one parameter indicating at least one of: the number of synchronization signal/physical broadcast channel (PBCH) blocks (SSBs), the number of contention-based preambles for each SSB, or a combination thereof. ### Claim 53 (depends on 47) The method of claim 47, wherein a first preamble format for the first type of random access is different from a second preamble format for the second type of random access. ### Claim 54 (depends on 47) The method of claim 47, wherein the configuration information further comprises at least one parameter specifically for the first type of random access. ### Claim 55 (depends on 49) The method of claim 49, wherein the one or more RACH occasions comprise one or more RACH occasions for the first type of random access and occupy a subset of RACH occasions for the second type of random access, and wherein the subset of RACH occasions is for both the one or more RACH occasions for the first type of random access and the one or more RACH occasions for the second type of random access. ### Claim 56 (depends on 55) The method of claim 55, wherein the one or more RACH occasions for the first type of random access are sent in: system information, radio resource control (RRC) messaging, or a combination thereof, for a UE performing the first type of random access only. ### Claim 57 (depends on 55) The method of claim 55, wherein the preamble of the first type of random access comprises a preamble sequence other than the one or more preamble sequences for the second type of random access, and wherein the preamble of the first type of random access is selected from non-contention based random access (non-CBRA) preambles associated with each of one or more synchronization signal/physical broadcast channel (PBCH) blocks (SSBs). ### Claim 58 (depends on 55) The method of claim 55, wherein the number of the non-CBRA preambles associated with each SSB is configured by at least one parameter. ### Claim 59 (depends on 55) The method of claim 55, wherein the subset of RACH occasions for both the one or more RACH occasions for the first type of random access and the one or more RACH occasions for the second type of random access is configured by at least one parameter, and wherein the subset of RACH occasions is associated with a same synchronization signal/physical broadcast channel (PBCH) block (SSB) index. ### Claim 60 (depends on 52) The method of claim 52, wherein the one or more RACH occasions comprise one or more RACH occasions that are only for the first type of random access and that are different from RACH occasions configured by the at least one base station for the second type of random access. ### Claim 61 (depends on 60) The method of claim 60, wherein the one or more RACH occasions only for the first type of random access are sent in: system information, radio resource control (RRC) messaging, or a combination thereof, for a UE performing the first type of random access only. ### Claim 62 (depends on 60) The method of claim 60, wherein the configuration information further comprises at least one parameter indicating at least one of: the number of synchronization signal/physical broadcast channel (PBCH) blocks (SSBs), the number of contention-based preambles for each SSB, or a combination thereof. ### Claim 63 (depends on 60) The method of claim 60, wherein a first preamble format for the first type of random access is different from a second preamble format for the second type of random access. ### Claim 64 (depends on 60) The method of claim 60, wherein the configuration information further comprises at least one parameter specifically for the first type of random access. ### Claim 65 (depends on 42) The method of claim 42, wherein transmission of the payload of the first message is based, at least in part, on a modulation and coding scheme (MCS) for the payload, the MCS being: different from a MCS for the msg3 of the second type of random access, a subset of the MCS for the msg3, or a combination thereof. ### Claim 66 (depends on 65) The method of claim 65, wherein the MCS for the payload is based, at least in part, on a size of the payload, a resource allocation of the payload, a waveform of the payload, a coverage condition of the UE, or a combination thereof. ### Claim 67 (depends on 66) The method of claim 66, further comprising transmitting the configuration information in: a system information block (SIB), a radio resource control (RRC) message, or a combination thereof, wherein the configuration information further comprises configuration for the MCS for the payload. ### Claim 68 (depends on 42) The method of claim 42, wherein the configuration information further comprises slot format information only for the first type of random access. ### Claim 69 (depends on 68) The method of claim 68, further comprising transmitting the configuration information in: a system information block (SIB), a radio resource control (RRC) message, or a combination thereof. ### Claim 70 (depends on 68) The method of claim 68, wherein the slot format information indicates a slot-based structure for the first message, a symbol-based structure for the first message, or a combination thereof. ### Claim 71 (depends on 68) The method of claim 68, wherein the configuration information further comprises one or more indications of: the number of slots containing one or more physical uplink shared channel (PUSCH) occasions and the number of time domain PUSCH occasions in each slot of the number of slots, and wherein each slot of the number of slots has a same time domain resource allocation. ### Claim 72 (depends on 68) The method of claim 68, wherein physical uplink shared channel (PUSCH) occasions that include a guard period are contiguous in time domain within a slot. ### Claim 73 (depends on 41) The method of claim 41, wherein the configuration information further comprises at least one of guard band configuration or guard time configuration for the preamble and for the payload of the first message of the first type of random access. ### Claim 74 (depends on 73) The method of claim 73, wherein the at least one of the guard band configuration or the guard time configuration for the preamble of the first message is same as guard band configuration or guard time configuration for the preamble of the msg 1 of the second type of random access, respectively. ### Claim 75 (depends on 73) The method of claim 73, wherein the at least one of the guard band configuration or the guard time configuration for the payload is same as the at least one of the guard band configuration or guard time configuration for the preamble of the first message, respectively. ### Claim 76 (depends on 73) The method of claim 73, wherein the at least one of the guard band configuration or the guard time configuration for the payload is different from the at least one guard band configuration or guard time configuration for the preamble of the first message, respectively. ### Claim 77 (depends on 73) The method of claim 73, wherein the guard band configuration for the payload comprises a physical resource block (PRB). ### Claim 78 (depends on 73) The method of claim 73, wherein the at least one of guard band configuration or guard time configuration for the preamble and for the payload of the first message is: transmitted in a system information block (SIB), transmitted in a master information block (MIB), transmitted in a radio resource control (RRC) message, specified in a standard, or a combination thereof. ### Claim 79 (depends on 73) The method of claim 73, wherein intra-slot frequency hopping for each physical uplink shared channel (PUSCH) occasion of the first message is configured, and wherein a guard time between hops of the intra-slot frequency hopping is configurable. ### Claim 80 (depends on 41) The method of claim 41, wherein the at least one UE comprises an Internet-of-Things (IoT) UE. ### Claim 81 An apparatus for wireless communication in a network supporting co-existence of a first type of random access and a second type of random access, the apparatus comprising: at least one processor; and memory coupled to the at least one processor, the memory comprising instructions executable by the at least one processor to cause the apparatus to: receive configuration information from one or more base stations in the network, the configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access; and perform the first type of random access with at least one base station of the one or more base stations based, at least in part, on the configuration information, wherein the performing the first type of random access comprises: transmitting a first message to the at least one base station to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload; and receiving a second message associated with completion of the first type of random access, the second message transmitted by the at least one base station in response to the first message. ### Claim 82 An apparatus for wireless communication in a network supporting co-existence of a first type of random access and a second type of random access, the apparatus comprising: at least one processor; and memory coupled to the at least one processor, the memory comprising instructions executable by the at least one processor to cause the apparatus to: determine configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access; transmit the configuration information to one or more user equipments (UEs) in the network; and perform the first type of random access with at least one UE of the one or more UEs based, at least in part, on the configuration information, wherein performing the first type of random access comprises: receiving a first message from the at least one UE to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload; and transmitting to the at least one UE, in response to the first message, a second message associated with completion of the first type of random access. ### Claim 83 An apparatus for wireless communication in a network supporting co-existence of a first type of random access and a second type of random access, the apparatus comprising: means for receiving configuration information from one or more base stations in the network, the configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access; and means for performing the first type of random access with at least one base station of the one or more base stations based, at least in part, on the configuration information, wherein the means for performing the first type of random access comprises: means for transmitting a first message to the at least one base station to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload; and means for receiving a second message associated with completion of the first type of random access, the second message transmitted by the at least one base station in response to the first message. ### Claim 84 An apparatus for wireless communication in a network supporting co-existence of a first type of random access and a second type of random access, the apparatus comprising: means for determining configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access; means for transmitting the configuration information to one or more user equipments (UEs) in the network; and means for performing the first type of random access with at least one UE of the one or more UEs based, at least in part, on the configuration information, wherein the means for performing the first type of random access comprises: means for receiving a first message from the at least one UE to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload; and means for transmitting to the at least one UE, in response to the first message, a second message associated with completion of the first type of random access. ### Claim 85 A computer-readable medium for wireless communication by a user equipment (UE) in a network supporting co-existence of a first type of random access and a second type of random access, the computer-readable medium comprising code, which when executed by at least one processor, causes the UE to: receive configuration information from one or more base stations in the network, the configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access; and perform the first type of random access with at least one base station of the one or more base stations based, at least in part, on the configuration information, wherein the performing the first type of random access comprises: transmitting a first message to the at least one base station to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload; and receiving a second message associated with completion of the first type of random access, the second message transmitted by the at least one base station in response to the first message. ### Claim 86 A computer-readable medium for wireless communication by a base station (BS) in a network supporting co-existence of a first type of random access and a second type of random access, the computer-readable medium comprising code, which when executed by at least one processor, causes the BS to: determine configuration information comprising one or more random access channel (RACH) occasions, the one or more RACH occasions for only the first type of random access or both the first type of random access and the second type of random access; transmit the configuration information to one or more user equipments (UEs) in the network; and perform the first type of random access with at least one UE of the one or more UEs based, at least in part, on the configuration information, wherein performing the first type of random access comprises: receiving a first message from the at least one UE to initiate the first type of random access based, at least in part, on at least one of the one or more RACH occasions, the first message comprising a preamble and a payload; and transmitting to the at least one UE, in response to the first message, a second message associated with completion of the first type of random access.