Techniques for dynamic resource allocation.

Abstract

A method and device for wireless communications are described. A user equipment (UE) receives system information indicating a first set of resources allocated for transmitting a random access message and a second set of resources for requesting on-demand signaling. The UE transmits the random access message over the first set and transmits a request for the on-demand signaling over the second set. Upon receiving the random access message, a network entity transmits a random access response indicating a third set of resources allocated for receiving the random access message. Upon receiving the request, the network entity transmits an indication of a fourth set of resources allocated for transmitting the on-demand signaling. The UE retransmits the random access message over the third set and receives the on-demand signaling over the fourth set.

Description

[Technical field]

[0001] The following relates to wireless communications, including techniques for dynamic resource allocation. [Background technology]

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasts, etc. These systems may be capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems, such as Long Term Evolution (LTE), LTE-Advanced (LTE-A), or LTE-A Pro systems, and fifth generation (5G) systems, sometimes referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communication system may include one or more base stations, each supporting wireless communication for communication devices, sometimes known as user equipment (UE). Components within a wireless communication system may be coupled (e.g., operatively, communicatively, functionally, electronically, and / or electrically) with one another.

[0003] In some wireless communication systems, a UE may initiate a random access procedure by transmitting a random access preamble to a network entity on resources configured via system information. However, in some cases, multiple UEs may transmit random access preambles on the same resources, which may result in collisions, latency, and reduced communication reliability. Summary of the Invention

[0004] The described techniques relate to improved methods, systems, devices, and apparatuses that support techniques for dynamic resource allocation. For example, the described techniques provide for improving initial access procedures between a user equipment (UE) and a network entity. According to aspects of the present disclosure, a UE may receive system information indicating a first set of resources allocated for transmission of a random access message, a second set of resources for requesting on-demand signaling, or both. Thus, the UE may transmit a random access message via the first set of resources and may transmit a request for on-demand signaling via the second set of resources. Upon receiving the random access message, the network entity may transmit a random access response (RAR) indicating a third set of resources (e.g., different from the first set of resources) allocated for reception of the random access message. Upon receiving the request, the network entity may transmit an indication of a fourth set of resources allocated for transmission of on-demand signaling. Thus, the UE may retransmit a random access message via the third set of resources and may receive on-demand signaling via the fourth set of resources.

[0005] A method for wireless communications in a UE is described. The method may include receiving, in a first downlink bandwidth portion (BWP), system information indicating a first set of resources allocated for transmission of a random access message in a first uplink BWP, transmitting the random access message over the first set of resources in accordance with the system information, receiving a RAR indicating a second set of resources different from the first set of resources, and transmitting a retransmission of the random access message over the second set of resources in accordance with the RAR.

[0006] An apparatus for wireless communication in a UE is described. The apparatus may include at least one processor, a memory (e.g., operatively, communicatively, functionally, electronically, or electrically) coupled to the at least one processor, and instructions stored in the memory. The instructions may be executable by the at least one processor to cause the apparatus to receive, in a first downlink BWP, system information indicating a first set of resources allocated for transmission of a random access message in a first uplink BWP, transmit the random access message via the first set of resources in accordance with the system information, receive a RAR indicating a second set of resources different from the first set of resources, and transmit a retransmission of the random access message via the second set of resources in accordance with the RAR.

[0007] Another apparatus is described for wireless communications in a UE. The apparatus may include means for receiving, in a first downlink BWP, system information indicating a first set of resources allocated for transmission of a random access message in a first uplink BWP, means for transmitting the random access message over the first set of resources in accordance with the system information, means for receiving a RAR indicating a second set of resources different from the first set of resources, and means for transmitting a retransmission of the random access message over the second set of resources in accordance with the RAR.

[0008] A non-transitory computer-readable medium storing code for wireless communications in a UE is described, which may include instructions executable by at least one processor to: receive, in a first downlink BWP, system information indicating a first set of resources assigned for transmission of a random access message in a first uplink BWP, transmit the random access message over the first set of resources in accordance with the system information, receive a RAR indicating a second set of resources different from the first set of resources, and transmit a retransmission of the random access message over the second set of resources in accordance with the RAR.

[0009] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an RAR may include acts, features, means, or instructions for receiving an RAR indicating a second set of resources and a duration during which the second set of resources may be available for retransmission of the random access message.

[0010] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an RAR may include operations, features, means, or instructions for receiving an RAR indicating a second set of resources that may be multiplexed with the first set of resources in a time domain, a frequency domain, a spatial domain, or a combination thereof.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an RAR may include an operation, feature, means, or instruction for receiving an RAR indicating a second set of resources in a first uplink BWP or in a second uplink BWP, which may be different from the first uplink BWP.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the RAR may include operations, features, means, or instructions for receiving an RAR indicating a second set of resources and a random access signature including one or more of a random access preamble identifier (RAPID), a UE identifier, or a temporary identifier associated with the random access resources, and sending a retransmission of the random access message may be based on comparing the random access signature from the RAR to a random access signature associated with the random access message.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the RAR may include operations, features, means, or instructions for receiving the RAR indicating a random access resource pool including a second set of resources, and sending a retransmission of the random access message over the second set of resources may be based on selecting the second set of resources from the random access resource pool.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described in this specification may further include operations, features, means, or instructions for receiving a multicast or broadcast downlink control channel transmission indicating one or more resources assigned for reception of an RAR, where the multicast or broadcast downlink control channel transmission comprises group common downlink control information, and monitoring one or more resources for an RAR in accordance with the multicast or broadcast downlink control channel transmission, where the RAR may be scrambled using a group identifier.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting a retransmission of the random access message may include operations, features, means, or instructions for transmitting the retransmission of the random access message over a second set of resources according to a power ramping scheme, a beam switching scheme, an antenna switching scheme, a BWP switching scheme, a carrier switching scheme, a random backoff scheme, a frequency hopping scheme, a coverage extension scheme, or combinations thereof.

[0016] A method for wireless communication in a network entity is described, which may include transmitting, in a first downlink BWP, system information indicating a first set of resources allocated for reception of a random access message in a first uplink BWP, monitoring the first set of resources for the random access message in accordance with the system information, transmitting an RAR based on monitoring the first set of resources, where the RAR indicates a second set of resources different from the first set of resources, and monitoring the second set of resources for retransmission of the random access message in accordance with the RAR.

[0017] An apparatus for wireless communication in a network entity is described. The apparatus may include at least one processor, a memory (e.g., operatively, communicatively, functionally, electronically, or electrically) coupled to the at least one processor, and instructions stored in the memory. The instructions may be executable by the at least one processor to cause the apparatus to transmit, in a first downlink BWP, system information indicating a first set of resources assigned for reception of a random access message in a first uplink BWP, monitor the first set of resources for the random access message according to the system information, and transmit an RAR based on monitoring the first set of resources, the RAR indicating a second set of resources different from the first set of resources, and monitor the second set of resources for retransmission of the random access message according to the RAR.

[0018] Another apparatus for wireless communication in a network entity is described, which may include means for transmitting, in a first downlink BWP, system information indicating a first set of resources assigned for reception of a random access message in a first uplink BWP, means for monitoring the first set of resources for the random access message according to the system information, means for transmitting an RAR based on monitoring the first set of resources, the RAR indicating a second set of resources different from the first set of resources, and means for monitoring the second set of resources for retransmission of the random access message according to the RAR.

[0019] A non-transitory computer-readable medium storing code for wireless communications in a network entity is described, the code may include instructions executable by at least one processor to: transmit, in a first downlink BWP, system information indicating a first set of resources assigned for reception of a random access message in a first uplink BWP, monitor the first set of resources for the random access message in accordance with the system information, transmit an RAR based on monitoring the first set of resources, the RAR indicating a second set of resources different from the first set of resources, and monitor the second set of resources for retransmission of the random access message in accordance with the RAR.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting the RAR may include acts, features, means, or instructions for transmitting an RAR indicating a second set of resources and a duration during which the second set of resources may be available for retransmission of the random access message.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting the RAR may include operations, features, means, or instructions for transmitting the RAR indicating a second set of resources that may be multiplexed with the first set of resources in a time domain, a frequency domain, a spatial domain, or a combination thereof.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting the RAR may include an operation, feature, means, or instruction for transmitting an RAR indicating a second set of resources in a first uplink BWP or in a second uplink BWP, which may be different from the first uplink BWP.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting the RAR may include an operation, feature, means, or instruction for transmitting an RAR indicating a second set of resources and a random access signature including one or more of a RAPID, a UE identifier, or a temporary identifier associated with the random access resource.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting the RAR may include an operation, feature, means, or instruction for transmitting an RAR indicating a random access resource pool including the second set of resources.

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting a multicast or broadcast downlink control channel transmission indicating one or more resources assigned for transmission of the RAR, where the multicast or broadcast downlink control channel transmission comprises group common downlink control information; and transmitting the RAR via the one or more resources in accordance with the multicast or broadcast downlink control channel transmission, where the RAR is scrambled using a group identifier, where the RAR may be scrambled using the group identifier.

[0026] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a retransmission of the random access message over the second set of resources according to a power ramping scheme, a beam switching scheme, an antenna switching scheme, a BWP switching scheme, a carrier switching scheme, a random backoff scheme, a frequency hopping scheme, a coverage extension scheme, or combinations thereof.

[0027] A method for wireless communications in a UE is described that may include receiving, in a first downlink BWP, system information indicating a first set of resources for requesting on-demand signaling, transmitting, in a first uplink BWP, a request for the on-demand signaling over the first set of resources, receiving an indication of a second set of resources allocated for reception of the on-demand signaling, and monitoring the second set of resources for the on-demand signaling in accordance with the indication.

[0028] An apparatus for wireless communication in a UE is described. The apparatus may include at least one processor, a memory (e.g., operatively, communicatively, functionally, electronically, or electrically) coupled to the at least one processor, and instructions stored in the memory. The instructions may be executable by the at least one processor to cause the apparatus to receive system information in a first downlink BWP indicating a first set of resources for requesting on-demand signaling, transmit a request for on-demand signaling over the first set of resources in a first uplink BWP, receive an indication of a second set of resources assigned for reception of the on-demand signaling, and monitor the second set of resources for on-demand signaling in accordance with the instructions.

[0029] Another apparatus is described for wireless communication in a UE. The apparatus may include means for receiving system information in a first downlink BWP indicating a first set of resources for requesting on-demand signaling, means for transmitting a request for the on-demand signaling over the first set of resources in a first uplink BWP, means for receiving an indication of a second set of resources assigned for reception of the on-demand signaling, and means for monitoring the second set of resources for the on-demand signaling in accordance with the indication.

[0030] A non-transitory computer-readable medium storing code for wireless communication in a UE is described, which may include instructions executable by at least one processor to: receive, in a first downlink BWP, system information indicating a first set of resources for requesting on-demand signaling, transmit, in a first uplink BWP, a request for on-demand signaling over the first set of resources, receive an indication of a second set of resources assigned for receiving the on-demand signaling, and monitor the second set of resources for the on-demand signaling in accordance with the indication.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving system information may include operations, features, means, or instructions for receiving system information indicating one or both of the first set of resources or the second set of resources in a first downlink BWP.

[0032] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication of the second set of resources may include an act, feature, means, or instruction for receiving a RAR indicating an activation status of the second set of resources, availability of the second set of resources, or both.

[0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the request may include acts, features, means, or instructions for transmitting a random access message including a request for on-demand signaling over the first set of resources.

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving, via the second set of resources, on-demand signaling including a system information block (SIB), a synchronization signal block (SSB), a set of reference signals, a broadcast channel transmission, timing information associated with the on-demand signaling (e.g., a timer controlling the presence of the on-demand signaling), or a combination thereof.

[0035] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include an operation, feature, means, or instruction for receiving, via the second set of resources, on-demand signaling indicating a set of uplink resources, a set of downlink resources, a set of measurement objects, a set of random access resources assigned for retransmission of the random access message, or a combination thereof.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the on-demand signaling indicates a set of random access resources, and the methods, apparatus, and non-transitory computer-readable media may include further operations, features, means, or instructions for sending retransmissions of the random access message over the set of random access resources indicated by the on-demand signaling.

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a set of multiple iterations of the on-demand signaling over a second set of resources.

[0038] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving on-demand signaling in the first downlink BWP or in a second downlink BWP, which may be different from the first downlink BWP.

[0039] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication of the second set of resources may include acts, features, means, or instructions for receiving an indication of a radio resource mapping between the second set of resources and on-demand signaling, the radio resource mapping being associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof.

[0040] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the radio resource mapping indicates one or more of a synchronization raster, a channel raster, or a repetition pattern associated with a UE capability, a UE service type, a UE link quality, or a combination thereof.

[0041] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for performing one or more of a BWP switching procedure, a carrier switching procedure, a beam switching procedure, an antenna switching procedure, a random backoff procedure, a frequency hopping procedure, or a coverage extension procedure based on receiving on-demand signaling over the second set of resources.

[0042] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include an operation, feature, means, or instruction for receiving an indication that the on-demand signaling, the second set of resources, or both, may be specific to a capability of the UE, a service type of the UE, a coverage level of the UE, a link quality of the UE, a contention resolution status of the UE, or a combination thereof.

[0043] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving system information may include acts, features, means, or instructions for receiving system information indicating a first set of resources for requesting on-demand signaling, the first set of resources including dedicated resources associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof.

[0044] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication of the second set of resources may include operations, features, means, or instructions for receiving a paging message at a paging occasion (PO) associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof, wherein the paging message includes an indication of the second set of resources.

[0045] A method for wireless communication in a network entity is described that may include transmitting, in a first downlink BWP, system information indicating a first set of resources for requesting transmission of on-demand signaling, receiving, in a first uplink BWP, a request for the on-demand signaling over the first set of resources, transmitting an indication of a second set of resources allocated for transmission of the on-demand signaling, and transmitting the on-demand signaling over the second set of resources in accordance with the indication.

[0046] An apparatus for wireless communication in a network entity is described. The apparatus may include at least one processor, a memory (e.g., operatively, communicatively, functionally, electronically, or electrically) coupled to the at least one processor, and instructions stored in the memory. The instructions may be executable by the at least one processor to cause the apparatus to transmit, in a first downlink BWP, system information indicating a first set of resources for requesting transmission of on-demand signaling, receive, in a first uplink BWP, a request for on-demand signaling via the first set of resources, transmit an indication of a second set of resources allocated for transmission of the on-demand signaling, and transmit the on-demand signaling via the second set of resources in accordance with the instructions.

[0047] Another apparatus for wireless communication in a network entity is described, which may include means for transmitting, in a first downlink BWP, system information indicating a first set of resources for requesting transmission of on-demand signaling, means for receiving, in a first uplink BWP, a request for the on-demand signaling over the first set of resources, means for transmitting an indication of a second set of resources allocated for transmission of the on-demand signaling, and means for transmitting the on-demand signaling over the second set of resources in accordance with the indication.

[0048] A non-transitory computer-readable medium storing code for wireless communication in a network entity is described, which may include instructions executable by at least one processor to: transmit, in a first downlink BWP, system information indicating a first set of resources for requesting transmission of on-demand signaling, receive, in a first uplink BWP, a request for on-demand signaling over the first set of resources, transmit an indication of a second set of resources allocated for transmission of the on-demand signaling, and transmit the on-demand signaling over the second set of resources in accordance with the indication.

[0049] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting system information may include acts, features, means, or instructions for transmitting system information indicating one or both of the first set of resources or the second set of resources in the first downlink BWP.

[0050] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending an indication of the second set of resources may include an act, feature, means, or instruction for sending a RAR indicating an activation status of the second set of resources, availability of the second set of resources, or both.

[0051] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the request may include acts, features, means, or instructions for receiving, over the first set of resources, a random access message including a request for on-demand signaling.

[0052] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting on-demand signaling may include operations, features, means, or instructions for transmitting on-demand signaling including a SIB, an SSB, a set of reference signals, a broadcast channel transmission, timing information associated with the on-demand signaling, or a combination thereof, over the second set of resources.

[0053] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting the on-demand signaling may include operations, features, means, or instructions for transmitting, over the second set of resources, on-demand signaling indicating a set of uplink resources, a set of downlink resources, a set of measurement objects, a set of random access resources assigned for receiving the random access message, or a combination thereof.

[0054] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the on-demand signaling indicates a set of random access resources, and the methods, apparatus, and non-transitory computer-readable media may include further operations, features, means, or instructions for receiving retransmissions of the random access message via the set of random access resources indicated by the on-demand signaling.

[0055] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting the on-demand signaling may include acts, features, means, or instructions for transmitting a set of multiple iterations of the on-demand signaling over a second set of resources.

[0056] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting on-demand signaling may include acts, features, means, or instructions for transmitting the on-demand signaling in a second downlink BWP, which may be different from the first downlink BWP associated with transmitting the system information.

[0057] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting on-demand signaling may include acts, features, means, or instructions for transmitting the on-demand signaling in a first downlink BWP associated with transmitting system information.

[0058] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending an indication of the second set of resources may include operations, features, means, or instructions for sending an indication of a radio resource mapping between the second set of resources and on-demand signaling, the radio resource mapping being associated with a UE capability, a service type, a link quality, or a combination thereof.

[0059] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the radio resource mapping indicates one or more of a synchronization raster, a channel raster, or a repetition pattern associated with a UE capability, a service type, a link quality, or a combination thereof.

[0060] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting on-demand signaling may include acts, features, means, or instructions for transmitting on-demand signaling including instructions to perform a BWP switching procedure, a carrier switching procedure, a beam switching procedure, an antenna switching procedure, a random backoff procedure, a frequency hopping procedure, or a coverage extension procedure.

[0061] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for transmitting an indication that the on-demand signaling, the second set of resources, or both, may be specific to UE capabilities, service type, coverage level, link quality, contention resolution status, or combinations thereof.

[0062] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, transmitting system information may include operations, features, means, or instructions for transmitting system information indicating a first set of resources for requesting on-demand signaling, the first set of resources including dedicated resources associated with a UE capability, a service type, a link quality, or a combination thereof.

[0063] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending an indication of the second set of resources may include operations, features, means, or instructions for sending a paging message in a PO associated with the UE capability, service type, link quality, or combinations thereof, where the paging message includes an indication of the second set of resources.

[0064] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for identifying a request for on-demand signaling based on monitoring an energy level associated with the first set of resources and determining that the request corresponds to a UE capability, a service type, a link quality, a contention resolution status, a coverage level, or a combination thereof. [Brief description of the drawings]

[0065] [Figure 1] FIG. 1 illustrates an example of a wireless communication system that supports techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Diagram 2] FIG. 1 illustrates an example of a wireless communication system that supports techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Diagram 3] FIG. 2 illustrates an example of a resource diagram supporting techniques for dynamic resource allocation, in accordance with one or more aspects of the present disclosure. [Figure 4A] FIG. 1 illustrates an example process flow supporting a technique for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 4B] FIG. 1 illustrates an example process flow supporting a technique for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Diagram 5] FIG. 1 illustrates an example process flow supporting a technique for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 6] FIG. 1 illustrates an example process flow supporting a technique for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 7] FIG. 1 illustrates a block diagram of a device that supports techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 8] FIG. 1 illustrates a block diagram of a device that supports techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 9] 1 is a block diagram of a communications manager that supports techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 10] FIG. 1 is a diagram of a system including devices that support techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 11] FIG. 1 illustrates a block diagram of a device that supports techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 12] FIG. 1 illustrates a block diagram of a device that supports techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 13] 1 is a block diagram of a communications manager that supports techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 14] FIG. 1 is a diagram of a system including devices that support techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. [Figure 15] 1 is a flowchart illustrating a method for supporting techniques for dynamic resource allocation, according to one or more aspects of the present disclosure. [Figure 16] 1 is a flowchart illustrating a method for supporting techniques for dynamic resource allocation, according to one or more aspects of the present disclosure. [Figure 17] 1 is a flowchart illustrating a method for supporting techniques for dynamic resource allocation, according to one or more aspects of the present disclosure. [Figure 18] 1 is a flowchart illustrating a method for supporting techniques for dynamic resource allocation, according to one or more aspects of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0066] In some wireless communication systems, an idle or inactive user equipment (UE) may initiate a RACH procedure by transmitting a random access preamble to a network entity via one or more random access channel (RACH) resources. These RACH resources may be indicated via a system information block (SIB) and may be applicable to UEs within the coverage area of ​​the network entity. SIB-configured RACH resources may be relatively inflexible (e.g., fixed) and may not be suitable for networks with varying traffic loads. For example, if multiple UEs transmit random access preambles simultaneously on the same RACH resource, collisions may occur between the random access preambles. These collisions may reduce the likelihood that the network entity can successfully receive and decode the random access preamble. Moreover, the UE may be configured to retransmit the random access preamble on the same RACH resource (e.g., if a previous transmission fails), which may result in more collisions, higher latency, and higher power consumption.

[0067] Aspects of the present disclosure provide for dynamically configuring additional RACH resources that may be used to retransmit random access preambles and other uplink messages. These dynamically configured RACH resources may be indicated via a random access response (RAR), which may include message 2 (msg2), message 4 (msg4), or message B (msgB). For example, if a UE transmits message 1 (msg1) via a SIB-configured RACH resource, the UE may receive msg2 indicating a set of dynamically configured RACH resources that the UE can use to retransmit msg1 (e.g., if an initial attempt fails). The dynamically configured RACH resources may be available for a particular duration and may be multiplexed (e.g., in time, frequency, or space) with the SIB-configured RACH resources. In some examples,

[0068] Techniques described herein may also provide for requesting (e.g., activating) on-demand signaling during an initial access procedure. For example, a UE may receive a SIB indicating a first set of resources for requesting on-demand signaling and may transmit a request for on-demand signaling over the first set of resources. In response to the request, the UE may receive an indication of a second set of resources assigned for reception of the on-demand signaling. Thus, the UE may monitor the second set of resources for on-demand signaling, which may include a synchronization signal block (SSB), a SIB, a set of reference signals, a broadcast transmission, timing information, or a combination thereof. In some examples, the on-demand signaling may indicate one or more uplink resources, downlink resources, RACH resources, or measurement objects configured for the UE.

[0069] Aspects of the present disclosure may be implemented to achieve one or more of the following advantages: The described techniques may increase the likelihood of a successful RACH procedure between a UE and a network entity by providing the UE with a dynamically configured set of RACH resources that may be used to retransmit random access messages. Dynamically allocating RACH resources to the UE may enable the UE to perform an initial access procedure with fewer collisions, reduced latency, and improved communication reliability, among other benefits. Moreover, the techniques described herein may enable the UE to activate (e.g., trigger) and receive on-demand signaling (e.g., SSBs, SIBs, reference signals) from a network entity during initial access, which may improve the likelihood of successful communication between the UE and the network entity.

[0070] Aspects of the disclosure are first described in the context of a wireless communication system, resource diagrams, and process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow charts relating to techniques for dynamic resource allocation.

[0071] 1 illustrates an example of a wireless communication system 100 supporting techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a network operating according to a Long Term Evolution (LTE) network, a LTE-Advanced (LTE-A) network, a LTE-A Pro network, a New Radio (NR) network, or other systems and radio technologies, including future systems and radio technologies not expressly mentioned herein.

[0072] The network entities 105 may be distributed throughout a geographic area to form the wireless communication system 100 and may include devices of different forms or with different capabilities. In various examples, the network entities 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, among other nomenclature. In some examples, the network entities 105 and the UEs 115 may communicate wirelessly over one or more communication links 125 (e.g., radio frequency (RF) access links). For example, each network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entities 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area in which the network entities 105 and the UEs 115 may support communication of signals over one or more radio access technologies (RATs).

[0073] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile or both at different times. The UEs 115 may be devices of different forms or with different capabilities. Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.

[0074] As described herein, a node of the wireless communication system 100, which may be referred to as a network node or a wireless node, may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a network entity 105, the second node may be a network entity 105, and the third node may be a UE 115. In yet other aspects of this example, the first node, the second node, and the third node may vary relative to these examples. Similarly, references to a UE 115, a network entity 105, an apparatus, a device, a computing system, etc. may include disclosure of the UE 115, the network entity 105, the apparatus, the device, the computing system, etc. being nodes. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.

[0075] In some examples, the network entities 105 may communicate with the core network 130, with each other, or with both. For example, the network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., according to an S1, N2, N3, or other interface protocol). In some examples, the network entities 105 may communicate with each other either through the backhaul communication links 120 (e.g., according to an X2, Xn, or other interface protocol), directly (e.g., directly between the network entities 105), or indirectly (e.g., via the core network 130). In some examples, the network entities 105 may communicate with each other via midhaul communication links 162 (e.g., according to a midhaul interface protocol) or fronthaul communication links 168 (e.g., according to a fronthaul interface protocol), or any combination thereof. The backhaul communication link 120, the midhaul communication link 162, or the fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links), among other examples or various combinations thereof. The UE 115 may communicate with the core network 130 through the communication link 155.

[0076] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a Next Generation NodeB or a Giga NodeB (any of which may be referred to as a gNB), a 5G NB, a Next Generation eNB (ng-eNB), a Home NodeB, a Home eNodeB, or other suitable terminology). In some examples, the network entities 105 (e.g., the base stations 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture that may be configured to utilize protocol stacks that are physically or logically integrated within a single network entity 105 (e.g., a single RAN node such as the base station 140).

[0077] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., disaggregated base station architecture, disaggregated RAN architecture) that may be configured to utilize a protocol stack that is physically or logically distributed between two or more network entities 105, such as an Integrated Access Backhaul (IAB) network, an Open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a Virtualized RAN (vRAN) (e.g., Cloud RAN (C-RAN)). For example, the network entity 105 may include one or more of a Central Unit (CU) 160, a Distributed Unit (DU) 165, a Radio Unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., Near-Real Time RIC, Non-Real Time RIC), a Service Management and Orchestration (SMO) 180 system, or any combination thereof. The RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmit / receive point (TRP). One or more components of the network entity 105 in a disaggregated RAN architecture may be collocated, or one or more components of the network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more of the network entities 105 in a disaggregated RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0078] The division of functions among the CU 160, the DU 165, and the RU 170 is flexible and may support different functions depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are executed in the CU 160, the DU 165, or the RU 170. For example, a functional division of a protocol stack may be adopted between the CU 160 and the DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host higher protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functions and signaling (e.g., Radio Resource Control (RRC), Service Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). The CU 160 may be connected to one or more DUs 165 or RUs 170, which may host lower protocol layers such as Layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functions and signaling, each of which may be at least partially controlled by the CU 160. Additionally or alternatively, a functional division of the protocol stack may be adopted between the DU 165 and the RU 170, such that the DU 165 may support one or more layers of the protocol stack, and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or more different cells (e.g., via one or more RUs 170). In some cases, the functional division between the CU 160 and the DU 165, or between the DU 165 and the RU 170, may be within a protocol layer (e.g., some functions for the protocol layer may be performed by one of the CU 160, the DU 165, or the RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170). The CU 160 may be further functionally divided into a CU control plane (CU-CP) function and a CU user plane (CU-UP) function.The CU 160 may be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), which may be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., open fronthaul (FH) interfaces). In some examples, the midhaul communication links 162 or the fronthaul communication links 168 may be implemented according to interfaces (e.g., channels) between layers of protocol stacks supported by the respective network entities 105 communicating via such communication links.

[0079] In a wireless communication system (e.g., the wireless communication system 100), infrastructure and spectrum resources for radio access can supplement wired backhaul connections to support wireless backhaul link capabilities and provide an IAB network architecture (e.g., to the core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with the donor network entity 105 (e.g., the donor base station 140). One or more donor network entities 105 (e.g., the IAB donors) can communicate with one or more additional network entities 105 (e.g., the IAB nodes 104) via supported access links and backhaul links (e.g., the backhaul communication links 120). The IAB node 104 may include an IAB mobile terminal (IAB-MT) that is controlled (e.g., scheduled) by the DU 165 of the associated IAB donor. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115 or may share the same antenna (e.g., of the RU 170) of the IAB node 104 that is used for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (VIaB-MT)). In some examples, the IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., the IAB node 104, the UE 115) in a relay chain or configuration of the access network (e.g., downstream). In such cases, one or more components of the disaggregated RAN architecture (e.g., one or more IAB nodes 104 or components of the IAB node 104) may be configured to operate in accordance with the techniques described herein.

[0080] For the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support the techniques for dynamic resource allocation described herein. For example, some operations described as being performed by the UE 115 or a network entity 105 (e.g., a base station 140) may additionally or alternatively be performed by one or more components of the disaggregated RAN architecture (e.g., the IAB node 104, the DU 165, the CU 160, the RU 170, the RIC 175, the SMO 180).

[0081] The UE 115 may include or be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or any other suitable terminology, and a "device" may also be referred to as a unit, a station, a terminal, or a client, among other examples. The UE 115 may be a cellular phone, a smart phone, a personal digital assistant (PDAs), The wireless device may be a device such as a wireless assistant, PDA, a multimedia / entertainment device (e.g., a radio, MP3 player, video device), a camera, a game console, a navigation / positioning device (e.g., a GNSS (Global Navigation Satellite System) device, e.g., based on GPS (Global Positioning System), Beidou, GLONASS, or Galileo, ground-based devices), a tablet computer, a laptop computer, a netbook, a smartbook, a personal computer, a smart device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, virtual reality goggles, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), a drone, a robot / robotic device, a vehicle, a vehicular device, a meter (e.g., parking meter, electric meter, gas meter, water meter), a monitor, a gas pump, a home appliance (e.g., kitchen appliance, washer, dryer), a location tag, a medical / healthcare device, an implant, a sensor / actuator, a display, or any other suitable device configured to communicate over a wireless or wired medium. In some examples, the UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various items such as an appliance, or a vehicle, a meter, among other examples.

[0082] The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may act as relays, as shown in FIG. 1, as well as network entities 105 and network equipment, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among various examples.

[0083] The UE 115 and the network entity 105 may wirelessly communicate with each other via one or more communication links 125 (e.g., access links) on one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication links 125. For example, a carrier used for the communication links 125 may include a portion (e.g., a bandwidth part (BWP)) of an RF spectrum band that operates according to one or more physical layer channels for a given RAT technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling to coordinate operation on the carrier, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communications between the network entity 105 and other devices may refer to communications between a device and any portion (e.g., entity, sub-entity) of the network entity 105. For example, when referring to the network entity 105, the terms "transmitting," "receiving," or "communicating" may refer to any portion of the network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of the RAN that communicates with another device (e.g., directly or via one or more other network entities 105).

[0084] In some examples, such as carrier aggregation configurations, carriers may also have acquisition or control signaling to coordinate operation with respect to other carriers. Carriers may be associated with frequency channels (e.g., evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel numbers (EARFCNs)) and may be arranged according to a channel raster for discovery by the UE 115. Carriers may operate in a standalone mode, where initial acquisition and connection may be made by the UE 115 over the carrier, or carriers may operate in a non-standalone mode, where connections are anchored using different carriers (e.g., of the same or different RATs).

[0085] The communication links 125 shown in the wireless communication system 100 may include, among other transmission configurations, downlink transmissions (e.g., forward link transmissions) from the network entity 105 to the UE 115, uplink transmissions (e.g., return link transmissions) from the UE 115 to the network entity 105, or both. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry downlink and uplink communications (e.g., in TDD mode).

[0086] A carrier may be associated with a particular bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of a set of bandwidths for a carrier of a particular RAT (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). A device of the wireless communication system 100 (e.g., the network entity 105, the UE 115, or both) may have a hardware configuration that supports communication on a particular carrier bandwidth or may be configurable to support communication on one of the set of carrier bandwidths. In some examples, the wireless communication system 100 may include a network entity 105 or a UE 115 that supports simultaneous communication via a carrier associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate over a portion (e.g., a sub-band, BWP) or all of the carrier bandwidth.

[0087] A signal waveform transmitted on a carrier may be composed of multiple subcarriers (e.g., using a multi-carrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and the subcarrier spacing may have an inverse proportional relationship. The amount of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both), such that the more resource elements a device receives and the higher the order of the modulation scheme, the higher the data rate for the device may be. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), where the use of multiple spatial resources may further increase data rates or data integrity for communications with UE 115.

[0088] One or more numerologies for a carrier may be supported, and the numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communication for the UE 115 may be limited to one or more active BWPs.

[0089] The time interval for the network entity 105 or the UE 115 may be, for example, T s =1 / ((Δf max N f)) seconds, where Δf max may represent the maximum supported subcarrier spacing, and N f may represent the maximum discrete Fourier transform (DFT) size supported. The communication resource time intervals may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0090] Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into an amount of slots. Alternatively, each frame may include a variable amount of slots, and the amount of slots may depend on the subcarrier spacing. Each slot may include an amount of symbol periods (e.g., depending on the length of a cyclic prefix prepended to each symbol period). In some wireless communication systems, a slot may be further divided into multiple minislots that include one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the frequency band of operation.

[0091] A subframe, slot, minislot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI length (e.g., the amount of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., among a burst of shortened TTIs (sTTIs)).

[0092] The physical channels may be multiplexed on the carriers according to various techniques. The physical control channels and the physical data channels may be multiplexed on the downlink carriers using, for example, one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for the physical control channels may be defined by a set of symbol periods and may span the system bandwidth of the carrier or a subset of the system bandwidth. One or more control regions (e.g., CORESET) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates at one or more aggregation levels configured in a cascaded manner. ) The aggregation level for a control channel candidate may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set may include a common search space set configured for sending control information to multiple UEs 115 and a UE-specific search space set for sending control information to a specific UE 115.

[0093] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and thus may provide communication coverage for moving coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include heterogeneous networks, for example, where different types of network entities 105 provide coverage for various coverage areas 110 using the same or different RATs.

[0094] The wireless communication system 100 may be configured to support ultra-reliable or low-latency communications, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communications (URLLC). The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private or group communications and may be supported by one or more services, such as push-to-talk, video, data, etc. Support for ultra-reliable, low-latency functionality may include service prioritization, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low latency, and ultra-reliable low latency may be used interchangeably herein.

[0095] In some examples, the UEs 115 may be able to communicate directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D or sidelink protocol). In some examples, one or more UEs 115 of a group performing D2D communication may be within a coverage area 110 of a network entity 105 (e.g., a base station 140, a RU 170), which may support aspects of such D2D communication configured or scheduled by the network entity 105. In some examples, one or more UEs 115 in such a group may be outside the coverage area 110 of the network entity 105, or in some cases may not be able to receive or may not be configured to receive transmissions from the network entity 105. In some examples, a group of UEs 115 communicating via D2D communication may support a one-to-many (1:M) system in which each UE 115 transmits to every other UE 115 in the group. In some examples, the network entity 105 may facilitate scheduling of resources for D2D communication. In some other examples, D2D communication may be performed between UEs 115 without the involvement of the network entity 105.

[0096] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) that manages access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a Packet Data Network (PDN) gateway (P-GW), or a user plane function (UPF)) that routes packets or interconnects to external networks. The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for UEs 115 served by network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be forwarded through a user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, an intranet(s), an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0097] The wireless communication system 100 may operate using one or more frequency bands, which may range from 300 megahertz (MHz) to 300 gigahertz (GHz). The 300 MHz to 3 GHz region is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range in length from approximately 1 decimeter to 1 meter. Although UHF waves may be blocked or redirected by buildings and environmental features, sometimes referred to as clusters, the waves may penetrate structures sufficiently for a macrocell to serve UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using lower frequencies and longer waves in the shortwave (high frequency (HF)) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0098] The wireless communication system 100 may also operate in the super high frequency (SHF) region, also known as the centimeter band, using a frequency band from 3 GHz to 30 GHz, or in the extremely high frequency (EHF) region of the spectrum, also known as the millimeter band (e.g., from 30 GHz to 300 GHz). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the network entity 105 (e.g., base station 140, RU 170), where the EHF antennas of the respective devices may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate the use of antenna arrays within the devices. However, propagation of EHF transmissions may experience more atmospheric attenuation and may be shorter distances than SHF or UHF transmissions. The techniques disclosed herein may be employed over transmissions using one or more different frequency regions, and the designated use of the bands over these frequency regions may vary by country or regulatory body.

[0099] The wireless communication system 100 may use both licensed and unlicensed RF spectrum bands. For example, the wireless communication system 100 may utilize License Assisted Access (LAA), LTE-Unlicensed (LTE-U) RAT, or NR technology in an unlicensed band, such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating in the unlicensed RF spectrum band, devices such as the network entity 105 and the UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation in the unlicensed band may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA). Operation in the unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0100] A network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the network entity 105 or UE 115 may be located in one or more antenna arrays or antenna panels that may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be collocated in an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with the network entity 105 may be located at various geographic locations. The network entity 105 may have an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals transmitted through the antenna ports.

[0101] Beamforming, sometimes referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting or receiving device (e.g., network entity 105, UE 115) to shape or steer an antenna beam (e.g., transmit beam, receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals communicated through antenna elements of an antenna array such that some signals propagating in a particular orientation relative to the antenna array are subject to constructive interference, while other signals are subject to destructive interference. Adjustment of signals communicated through antenna elements may include a transmitting or receiving device applying an amplitude offset, a phase offset, or both to signals carried through an antenna element associated with the device. The adjustment associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., relative to the antenna array of the transmitting or receiving device, or to some other orientation).

[0102] The UE 115 and the network entity 105 may support retransmission of data to increase the likelihood that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is correctly received on a communication link (e.g., communication link 125, D2D communication link 135). HARQ may include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions). In some examples, a device may support same-slot HARQ feedback, in which the device may provide HARQ feedback in a particular slot for data received in a previous symbol in that slot. In some other examples, the device may provide HARQ feedback in a subsequent slot or according to some other time interval.

[0103] In some wireless communication systems supporting NR, RACH resources for initial access and other contention-based random access (CBRA) procedures may be provided to the UE 115 via system information. For cells supporting different UE types or RACH procedure types, the network may not be able to change the amount of available RACH resources in response to varying system loads, duplex modes, or UE capabilities. In CBRA, collisions may occur when different UEs select the same RACH resources for RACH transmissions and RACH retransmissions. The techniques and operations described herein may enable the UE 115 to perform initial access, RACH, and system information acquisition procedures with fewer collisions, reduced latency, and higher efficiency. Aspects of the present disclosure may be applicable to wireless communication systems supporting different RATs (e.g., 5G Advanced or sixth generation (6G) RATs), different UE capabilities (e.g., reduced capability (RedCap) UEs), different service types, or a combination thereof.

[0104] The wireless communication system 100 may support more efficient utilization of communication resources during an initial access procedure between the UE 115 and the network entity 105. More specifically, the techniques and operations described with reference to FIG. 1 may enable the network entity 105 to provide the UE 115 with a dynamically configured set of RACH resources that the UE 115 may use for transmission (or retransmission) of a random access message. Dynamically allocating RACH resources to the UE 115 may enable the UE 115 to perform an initial access procedure with fewer collisions, reduced latency, and improved communication reliability, among other benefits. Moreover, the techniques described herein may enable the UE 115 to activate (e.g., trigger) and receive on-demand signaling from the network entity 105 during initial access, which may improve the likelihood of successful communication between the UE 115 and the network entity 105.

[0105] 2 illustrates an example of a wireless communication system 200 supporting techniques for dynamic resource allocation according to one or more aspects of the present disclosure. The wireless communication system 200 may implement or be implemented by aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a UE 115-a and a network entity 105-a, which may be examples of corresponding devices described with reference to FIG. 1. The UE 115-a and the network entity 105-a may communicate within a coverage area 110-a, which may be an example of the coverage area 110 described with reference to FIG. 1. In the wireless communication system 200, the UE 115-a may retransmit a random access message 210-b using a RACH resource from a dynamically configured resource pool.

[0106] As described with reference to FIG. 1, the network entity 105-a may include a RIC 175-a, a SMO 180-a, a CU 160-a, a DU 165-a, a RU 170-a, a base station 140-a, or a combination thereof. Communication between the network entity 105-a and the UE 115-a may refer to communication between the UE 115-a and any part (e.g., entity, sub-entity) of the network entity 105-a. In the following description of the wireless communication system 200, the terms "transmit," "receive," or "communicate," when referring to the network entity 105-a, may refer to any part of the network entity 105-a (e.g., base station 140-a, CU 160-a, DU 165-a, RU 170-a) that communicates with the UE 115-a (e.g., directly or via one or more other network entities 105).

[0107] When the UE 115-a is in an idle or inactive mode, the UE 115-a may establish an RRC connection with the network entity 105-a (e.g., a serving cell) by selecting a RACH resource indicated by the system information 205 and transmitting a random access message 210-a on the selected RACH resource. Additional RACH resources (not indicated in the system information) may be assigned to the UE 115-a via the RAR 215, which may be an example of a multicast or broadcast message, such as a msg2 RAR, a msg4, a msgB RAR, or any other channel scrambled by a group radio network temporary identifier (RNTI) and scheduled by a group common downlink control information (DCI). The RAR 215 may be scheduled by a multicast or broadcast physical downlink control channel (PDCCH) transmission and may include a response to the random access message 210-a (e.g., an initial uplink transmission on a physical RACH (PRACH) resource).

[0108] If the UE 115-a decodes the RAR 215 and is unable to find an identifier or signature (e.g., a Random Access Preamble Identifier (RAPID) field in the MAC header of the RAR 215, a PRACH preamble, a UE identifier, an RNTI associated with a particular RACH resource) that matches the identifier or signature of the random access message 210-a, the UE 115-a may retry transmission using additional RACH resources (e.g., RACH resources indicated by the RAR 215) dynamically allocated by the network entity 105-a. For example, the UE 115-a may transmit the random access message 210-b (e.g., a retransmission of the random access message 210-a) on the dynamically allocated RACH resources.

[0109] If the UE 115-a is unable to decode the RAR 215, the UE 115-a may retry the PRACH transmission using a power ramping scheme. Additionally or alternatively, the UE 115-a may select a different RACH resource indicated by the system information 205. The additional RACH resource indicated by the RAR 215 (e.g., a multicast or broadcast message) may be multiplexed (e.g., in time, frequency, space, or code) with the RACH resource indicated by the SIB (e.g., the RACH resource indicated by the system information 205). The dynamic RACH resource and the SIB configured RACH resource may be located in the same uplink BWP or in different uplink BWPs. The dynamic RACH resource may be available for a certain duration controlled by a timer. An indication of the duration or timer may be signaled to the UE 115-a in the RAR 215 or via downlink signaling (e.g., DCI, reference signal).

[0110] For cells supporting different UE types, different UE capabilities, or different service types using pre-configured uplink resources (e.g., PRACH resources, physical uplink shared channel (PUSCH) resources, msgA resources, physical uplink control channel (PUCCH) resources), the amount of uplink resources may be configured via system information 205 (e.g., fixed SIB) for a particular UE or service type (e.g., reduced capability, coverage extension, mitigated latency). Upon detecting a request 220 from the UE 115-a on these uplink resources (e.g., using energy detection), the network entity 105-a may transmit on-demand signaling 225 to the UE 115-a. The on-demand signaling 225 may include additional SSBs, SIBs, or reference signals to assist the UE 115-a in a random access procedure or other initial access procedure. The on-demand signaling 225 may be applicable to a particular UE type, service type, or connection state (e.g., idle, inactive, or connected state). Multiple UEs or service types can share (e.g., access) the same uplink resources indicated by system information 205 to trigger (e.g., request) the transmission or activation of on-demand signaling 225 in the same downlink BWP or in separately configured downlink BWPs.

[0111] After transmitting the request 220 on uplink resources indicated by the system information 205 (e.g., fixed SIB), the UE 115-a may receive a short message in a paging occasion (PO) dedicated to the particular UE or service type. Additionally or alternatively, the UE 115-a may receive a different multicast or broadcast message including the configuration or activation status of the on-demand signaling 225. Additional downlink and uplink resources may also be assigned to the particular UE or service type via the on-demand signaling 225. The transmission and configuration of the on-demand signaling 225 may be consistent with the capabilities, coverage levels, and other constraints associated with the particular UE or service type. In some examples, the radio resource mapping for the on-demand signaling 225 may be based on a synchronization raster, a channel raster, or a recurrence pattern configured for the UE or service type. Receipt of the on-demand signaling 225 may trigger a BWP switch or carrier switch in the UE 115-a. In some examples, the capabilities of the UE 115-a or signaling from the network entity 105-a may determine whether other UEs or service types can receive on-demand signaling 225 (or additional on-demand downlink or uplink resources).

[0112] The wireless communication system 200 may support more efficient utilization of communication resources during an initial access procedure between the UE 115-a and the network entity 105-a. More specifically, the techniques and operations described with reference to FIG. 2 may enable the network entity 105-a to provide the UE 115-a with a dynamically configured set of RACH resources that the UE 115-a may use for transmission (or retransmission) of a random access message 210. Dynamically allocating RACH resources to the UE 115-a may enable the UE 115-a to perform an initial access procedure with fewer collisions, reduced latency, and improved communication reliability, among other benefits. Furthermore, the techniques described herein may enable the UE 115-a to activate (e.g., trigger) and receive on-demand signaling 225 from the network entity 105-a during initial access, which may improve the likelihood of successful communication between the UE 115-a and the network entity 105-a.

[0113] 3 illustrates an example resource diagram 300 supporting techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. The resource diagram 300 may implement or be implemented by aspects of the wireless communication system 100 or the wireless communication system 200. For example, the resource diagram 300 may include a carrier bandwidth 305, an initial uplink BWP 310, and an initial downlink BWP 315, which may be configured by the network entity 105 described with reference to FIGs. 1 and 2. Similarly, the resource diagram 300 may include an initial downlink BWP 330 and an initial uplink BWP 335, which may be configured for the UE 115 described with reference to FIGs. 1 and 2. In the resource diagram 300, a UE with reduced capabilities (e.g., RedCap UE) may be configured with the initial downlink BWP 330 and the initial uplink BWP 335, while other UEs may be configured with the initial uplink BWP 310 and the initial downlink BWP 315.

[0114] A UE (e.g., a non-RedCap UE) may be configured with a carrier bandwidth 305 and an initial uplink BWP 310 within a particular frequency range, such as Frequency Range 1 (FR1). The carrier bandwidth 305 and the initial uplink BWP 310 may occupy a bandwidth greater than 100 MHz in some examples. The initial uplink BWP 310 may include PUCCH resources 340-a and 340-b, which may be located at opposite ends of the initial uplink BWP 310. The UE may use the PUCCH resources 340 for transmission of HARQ acknowledgement (ACK) information during an initial access procedure. The PUCCH resources 340 may be associated with a relatively high reliability (e.g., compared to other portions of the initial uplink BWP 310), which may improve the likelihood that a network entity will successfully receive the HARQ-ACK information.

[0115] The UE may also be configured with an initial downlink BWP 315, which may be indicated via SIB1. The UE may receive a random access message (e.g., RAR) from a network entity in the initial downlink BWP 315, which may enable the UE to establish an RRC connection with the network entity. Compared to the initial uplink BWP 310, the initial downlink BWP 315 may occupy a relatively smaller frequency range, which may reduce power consumption associated with downlink monitoring operations at the UE. Before initiating an RRC connection with the network entity (e.g., while in an idle or inactive state), the UE may scan a preconfigured synchronization raster and monitor a cell-defined SSB (CD-SSB) 325. The CD-SSB 325 may include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH) transmission, which may enable the UE to acquire synchronization with the network entity. The CD-SSB 325 may also include a Master Information Block (MIB) that indicates the configuration (eg, resource mapping) for CORESET#0 320.

[0116] Thus, the UE may monitor CORESET#0 320 for PDCCH transmissions that may schedule transmission of SIB1. After receiving SIB1 and remaining minimum system information (RMSI), the UE may decode SIB1 and determine a configuration (e.g., resource mapping) for the initial uplink BWP 310, the initial downlink BWP 315, or both. The initial downlink BWP 315 may be configured to encompass both CORESET#0 320 and the CD-SSB 325. The UE may use the initial uplink BWP 310 and the initial downlink BWP 315 after establishing an RRC connection with the network entity. However, in some cases, the initial uplink BWP 310 may not be suitable for RedCap UEs. Instead, these UEs may be configured with the initial downlink BWP 330 and the initial uplink BWP 335, which may occupy a bandwidth 345 of less than 20 MHz in FR1. The initial uplink BWP 335 may include a PUCCH resource 340-c, which may overlap (eg, in frequency) with the PUCCH resource 340-a.

[0117] The resource diagram 300 may support more efficient utilization of communication resources during an initial access procedure between a UE and a network entity. More specifically, the techniques and operations described with reference to FIG. 3 may enable a network entity to provide a UE with a dynamically configured set of RACH resources that the UE may use for transmission (or retransmission) of a random access message. Dynamically allocating RACH resources to a UE may enable the UE to perform an initial access procedure with fewer collisions, reduced latency, and improved communication reliability, among other benefits. Moreover, the techniques described herein may enable the UE to activate (e.g., trigger) and receive on-demand signaling from a network entity during initial access, which may improve the likelihood of successful communication between the UE and the network entity.

[0118] 4A and 4B are diagrams illustrating examples of process flows 400 and 401 supporting techniques for dynamic resource allocation according to one or more aspects of the present disclosure. Process flows 400 and 401 may implement or be implemented by aspects of wireless communication system 100 or wireless communication system 200. For example, process flow 400 may include UE 115-b and network entity 105-b, which may be examples of corresponding devices described with reference to FIGS. 1 and 2. Similarly, process flow 401 may include UE 115-c and network entity 105-c, which may be examples of corresponding devices described herein. In the following description of process flows 400 and 401, operations between UE 115 and network entity 105 may be performed in a different order or at different times than shown. Additionally or alternatively, some operations may also be omitted from process flow 400 or process flow 401, and other operations may be added to process flow 400 or process flow 401.

[0119] For RACH-based small data transmission (SDT) in an inactive state (e.g., RRC_INACTIVE), both the two-step RACH procedure and the four-step RACH procedure may be used. To perform RACH-based SDT, the UE 115 may re-establish at least an SDT PDCP connection and use the resource blocks (RBs) configured for SDT. In subsequent data transmissions (e.g., after successful contention resolution), the UE 115 may monitor a separate common search space (CSS), if configured, for one or more dynamic grants (DGs) using a Cell Radio Network Temporary Identifier (C-RNTI) according to the RACH-based SDT scheme. The RRCRelease message may be used to terminate the SDT procedure (e.g., with respect to RRC). The MAC subheader of msg2 (in a four-step RACH procedure) or msgB (in a two-step RACH procedure) may include a PRACH preamble index, such as RAPID, that may be detected by the network entity 105. The RAR grant in msg2 or msgB may indicate one or more timing advance (TA) commands, one or more uplink grants, one or more C-RNTIs, or a combination thereof.

[0120] The process flow 400 may illustrate a four-step RACH procedure between the UE 115-b and the network entity 105-b. In some examples, the UE 115-b may perform the four-step RACH procedure after receiving an RRCRelease message from the network entity 105-b. Prior to performing the four-step RACH procedure, the UE 115-b may receive SSBs and RACH configuration information from the network entity 105-b. The SSBs may include a PBCH transmission, a PSS, and an SSS that the UE 115-b may use to acquire synchronization with the network entity 105-b. The RACH configuration information may indicate one or more RACH resources that the UE 115-b may use for transmitting msg1. To initiate the four-step RACH procedure, the UE 115-b may transmit msg1 on the RACH resources indicated by the RACH configuration information. The msg1 may include a random access preamble associated with RAPID. Thus, network entity 105-b may send msg2 (eg, RAR) in response to msg1.

[0121] Upon receiving msg2, the UE 115-b may transmit msg3, which may include an RRCResumeRequest, uplink data, a buffer status report (BSR) MAC control element (CE), or a combination thereof. The network entity 105-b may respond to msg3 with msg4 (e.g., a network response), which may include a contention resolution message. After successfully receiving msg4, the UE 115-b may transmit HARQ-ACK information to confirm that the contention resolution was successful. In some examples, the UE 115-b and the network entity 105-b may perform one or more subsequent data transmissions following the contention resolution. For example, the UE 115-b may transmit uplink data to the network entity 105-b, and the network entity 105-b may transmit downlink data in response to the uplink data. The network entity 105-b may transmit an RRCRelease message to the UE 115-b when these subsequent data transmissions are completed, in some examples.

[0122] The process flow 401 may illustrate a two-step RACH procedure between the UE 115-c and the network entity 105-c. In some examples, the UE 115-c may perform the two-step RACH procedure after receiving an RRCRelease message from the network entity 105-c. Prior to performing the two-step RACH procedure, the UE 115-c may receive SSBs and RACH configuration information from the network entity 105-c. The SSBs may include a PBCH transmission, a PSS, and an SSS that the UE 115-c may use to acquire synchronization with the network entity 105-c. The RACH configuration information may indicate one or more RACH resources that the UE 115-c may use for transmitting msgA. To initiate the two-step RACH procedure, the UE 115-c may transmit msgA on the RACH resources indicated by the RACH configuration information. The msgA may include a random access preamble and a PUSCH payload including an RRCResumeRequest, uplink data, a BSR MAC-CE, or a combination thereof.

[0123] Upon receiving msgA, the network entity 105-c may transmit msgB (e.g., a network response) that includes a contention resolution message. In some examples, msgB may not include an RRC message. In response to msgB, the UE 115-c may transmit HARQ-ACK information to the network entity 105-c to confirm that the contention resolution was successful. In some examples, the UE 115-c and the network entity 105-c may perform one or more subsequent data transmissions following the contention resolution. For example, the UE 115-c may transmit uplink data to the network entity 105-c, and the network entity 105-c may transmit downlink data in response to the uplink data. The network entity 105-c may transmit an RRCRelease message to the UE 115-c when these subsequent data transmissions are completed, in some examples.

[0124] Process flows 400 and 401 may support more efficient utilization of communication resources during an initial access procedure between UE 115 and network entity 105. More specifically, the techniques and operations described with reference to FIG. 4A and FIG. 4B may enable network entity 105 to provide UE 115 with a dynamically configured set of RACH resources that UE 115 may use for transmission (or retransmission) of a random access message. Dynamically allocating RACH resources to UE 115 may enable UE 115 to perform an initial access procedure with fewer collisions, reduced latency, and improved communication reliability, among other benefits. Moreover, techniques described herein may enable UE 115 to activate (e.g., trigger) and receive on-demand signaling from network entity 105 during initial access, which may improve the likelihood of successful communication between UE 115 and network entity 105.

[0125] 5 illustrates an example of a process flow 500 supporting a technique for dynamic resource allocation according to one or more aspects of the present disclosure. The process flow 500 may implement or be implemented by aspects of the wireless communication system 100 or the wireless communication system 200, the process flow 400, the process flow 401. For example, the process flow 500 may include a UE 115-d and a network entity 105-d, which may be examples of corresponding devices described herein. In the following description of the process flow 500, operations between the UE 115-d and the network entity 105-d may be performed in a different order or at different times than shown. Additionally or alternatively, some operations may also be omitted from the process flow 500 and other operations may be added to the process flow 500.

[0126] In some cases, the UE 115-d may receive system information (e.g., SIB) from the network entity 105-d and may transmit an initial uplink transmission using a RACH resource indicated by the system information. Upon receiving this initial uplink transmission, the network entity 105-d may transmit a response to the UE 115-d. For example, if the UE 115-d is unable to decode the response before expiration of a preconfigured timer (e.g., due to fading or link budget constraints), the UE 115-d may retry the uplink transmission after expiration of the preconfigured timer by selecting the same or a different RACH resource indicated by the system information. The UE 115-d may retry the uplink transmission with or without power ramping (e.g., using the same transmit power or a different transmit power). However, in some cases, retrying the uplink transmission on the same RACH resource may result in additional collisions and latency. The techniques and operations described with reference to FIG. 5 may enable the UE 115-d to retry an uplink transmission using a different (e.g., dynamically allocated) RACH resource, which may increase the likelihood that the network entity 105-d will successfully receive the uplink transmission.

[0127] At 505, the UE 115-d may receive system information (e.g., SIB) indicating a first set of RACH resources allocated for transmission of a random access message. At 510, the UE 115-d may transmit a random access message (e.g., msg1, msgA) using the first set of RACH resources indicated by the system information. At 515, the network entity 105-d may transmit an RAR indicating a set of dynamically configured RACH resources from a RACH resource pool. For example, if the UE 115-d cannot decode the RAR and identify a matching signature (e.g., RAPID, PRACH preamble, UE identifier, RNTI associated with the RACH resource) corresponding to a previous random access message, the UE 115-d may obtain additional resources from the dynamically configured RACH resource pool. In some examples, the RACH resource pool may be indicated by the RAR, a subsequent multicast or broadcast message scheduled by the RAR, or another channel scrambled using the group RNTI and scheduled by the group common DCI.

[0128] At 520, the UE 115-d may transmit a retransmission of the random access message using a RACH resource from a dynamically configured RACH resource pool. More specifically, the UE 115-d may select one or more RACH resources from the RACH resource pool and retransmit the random access message on the selected RACH resource. In some examples, the dynamically configured RACH resource pool may be different from the RACH resources configured by the system information (e.g., different from those indicated in SIB1). In other examples, the dynamically configured RACH resources may be multiplexed (e.g., in time, frequency, or space) with the SIB-configured RACH resources. As described herein, these SIB-configured resources (also referred to as fixed RACH resources) may have periodic availability and fixed mapping with respect to the time domain, frequency domain, code domain, spatial domain, or combinations thereof. The SIB-configured RACH resources may also be incompatible with some UE types and procedures involving RACH resources. Moreover, the SIB-configured RACH resources may have fixed resource allocations and partitions. In some cases, the network entity 105-d may not signal which SIB-configured RACH resources are available, which may result in congestion and signal collisions.

[0129] In contrast, dynamic RACH resources from a RACH resource pool may be available for a specific duration and may be assigned via a multicast or broadcast channel (including RAR). These dynamic RACH resources may have aperiodic availability or periodic availability within a specific time duration (which may be given to the UE 115-d and the network entity 105-d). The network entity 105-d may, in some examples, send an indication of which dynamic RACH resources are available, which may enable the UE 115-d to more effectively utilize the dynamic RACH resources. Dynamic RACH resources may support adaptive resource allocation and partitioning. In contrast to SIB-configured RACH resources, these dynamic RACH resources may be flexible and time-varying.

[0130] The dynamic RACH resources may or may not overlap with the SIB configured RACH resources. The dynamic RACH resources may also be forward compatible with different UE types and procedures involving RACH resources. In some examples, the size of the RACH resource pool may vary with respect to the time domain. The RACH resource pool may include, in some examples, SIB configured RACH resources and dynamic RACH resources (e.g., RACH resources dynamically configured by multicast or broadcast messages, which may include responses to PRACH transmissions from UE 115-d during initial access or RACH-based procedures).

[0131] The process flow 500 may support more efficient utilization of communication resources during an initial access procedure between the UE 115-d and the network entity 105-d. More specifically, the techniques and operations described with reference to FIG. 5 may enable the network entity 105-d to provide the UE 115-d with a dynamically configured set of RACH resources that the UE 115-d may use for transmission (or retransmission) of a random access message. Dynamically allocating RACH resources to the UE 115-d may enable the UE 115-d to perform an initial access procedure with fewer collisions, reduced latency, and improved communication reliability, among other benefits. Furthermore, the techniques described herein may enable the UE 115-d to activate (e.g., trigger) and receive on-demand signaling from the network entity 105-d during initial access, which may improve the likelihood of successful communication between the UE 115-d and the network entity 105-d.

[0132] 6 illustrates an example of a process flow 600 supporting a technique for dynamic resource allocation according to one or more aspects of the present disclosure. The process flow 600 may implement or be implemented by aspects of the wireless communication system 100 or the wireless communication system 200, the process flow 400, the process flow 401, or the process flow 500. For example, the process flow 600 may include a UE 115-e and a network entity 105-e, which may be examples of corresponding devices described with reference to FIGS. 1-5. In the following description of the process flow 600, operations between the UE 115-e and the network entity 105-e may be performed in a different order or at different times than shown. Additionally or alternatively, some operations may also be omitted from the process flow 600 and other operations may be added to the process flow 600.

[0133] At 605, the network entity 105-e may transmit system information (e.g., fixed SIB) indicating a first set of resources for requesting on-demand signaling (also referred to herein as activated signaling), a second set of resources allocated for transmission of the on-demand signaling, or both. The system information may also include SSBs (e.g., PSS, SSS, and PBCH transmissions) and RACH configuration information that may enable the UE 115-e to initiate a RACH procedure with the network entity 105-e. The network entity 105-e may transmit the system information in a first downlink BWP. The first set of resources may include pre-configured or dedicated uplink resources related to the capabilities of the UE 115-e, the link quality of the UE 115-e, the service type, the contention resolution status of the UE 115-e, or the coverage level, in some examples. The pre-configured uplink resources may be located within the first uplink BWP.

[0134] At 610, the UE 115-e may trigger (e.g., activate) transmission of on-demand signaling in a first downlink BWP or in a second downlink BWP different from the first downlink BWP. The UE 115-e may activate transmission of on-demand signaling using preconfigured uplink resources (e.g., resources indicated by system information) in the first uplink BWP. For example, the UE 115-e may transmit a random access message (e.g., msg1, msgA) indicating a request for on-demand signaling. The UE 115-e may also use the preconfigured resources to request on-demand downlink or uplink resource allocation, which may be specific to the capabilities or service type of the UE 115-e. In some examples, the UE 115-e may request uplink or downlink resources in a particular BWP or carrier.

[0135] At 615, the network entity 105-e may respond to the request from the UE 115-e. For example, the network entity 105-e may transmit a paging message or RAR indicating the second set of resources allocated for transmission of the on-demand resources, the activation status of the second set of resources, the availability of the second set of resources, or a combination thereof. The RAR may also indicate a radio resource mapping between the second set of resources and the on-demand signaling. This radio resource mapping may include a synchronization raster, a channel raster, or a repetition pattern configured for the on-demand signaling. The second set of resources may be located in the first downlink BWP or the second downlink BWP. Thus, the network entity 105-e may transmit the on-demand signaling via the second set of resources. The on-demand signaling may include a SIB, an SSB, a set of reference signals, a PBCH transmission, timing information associated with the on-demand signaling, or a combination thereof.

[0136] At 620, the UE 115-e may receive on-demand signaling in the first downlink BWP or in the second downlink BWP. In some examples, the UE 115-e may monitor and receive the on-demand signaling according to the indicated radio resource mapping. The on-demand signaling may be specific to the capabilities of the UE 115-e, the service type of the UE 115-e, the coverage level of the UE 115-e, the link quality of the UE 115-e, the contention resolution status of the UE 115-e, or a combination thereof. In some examples, the on-demand signaling may configure additional uplink resources, downlink resources, or measurement objects for the UE 115-e. These downlink resources, uplink resources, or measurement objects may be located in the first downlink BWP, the second downlink BWP, the first uplink BWP, or the second uplink BWP. In some examples, the on-demand signaling may configure the UE 115-e to perform one or more of a BWP switching procedure, a carrier switching procedure, a beam switching procedure, an antenna switching procedure, a random backoff procedure, a frequency hopping procedure, or a coverage extension procedure.

[0137] The process flow 600 may support more efficient utilization of communication resources during an initial access procedure between the UE 115-e and the network entity 105-e. More specifically, the techniques and operations described with reference to FIG. 6 may enable the network entity 105-e to provide the UE 115-e with a dynamically configured set of RACH resources that the UE 115-e may use for transmission (or retransmission) of a random access message. Dynamically allocating RACH resources to the UE 115-e may enable the UE 115-e to perform an initial access procedure with fewer collisions, reduced latency, and improved communication reliability, among other benefits. Furthermore, the techniques described herein may enable the UE 115-e to activate (e.g., trigger) and receive on-demand signaling from the network entity 105-e during initial access, which may improve the likelihood of successful communication between the UE 115-e and the network entity 105-e.

[0138] 7 illustrates a block diagram 700 of a device 705 supporting techniques for dynamic resource allocation in accordance with one or more aspects of the disclosure. The device 705 may be an example of an aspect of a UE 115 described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705 may also include at least one processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0139] The receiver 710 may provide a means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various traffic channels (e.g., control channels, data channels, traffic channels related to techniques for dynamic resource allocation). The information may be passed to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.

[0140] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information such as packets associated with various traffic channels (e.g., control channels, data channels, traffic channels related to techniques for dynamic resource allocation), user data, control information, or any combination thereof. In some examples, the transmitter 715 may be collocated with the receiver 710 within a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.

[0141] The communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be examples of means for performing various aspects of the techniques for dynamic resource allocation described herein. For example, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0142] In some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (e.g., in a communications management circuit). The hardware may include at least one processor, digital signal processor (DSP), central processing unit (CPU), graphic processing unit (GPU), application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing functions described in this disclosure. In some examples, the at least one processor and memory coupled (e.g., operatively, communicatively, functionally, electronically, or electrically) to the at least one processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the at least one processor).

[0143] Additionally or alternatively, in some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communications management software). When implemented in code executed by at least one processor, the functions of the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be performed by a general purpose processor, a DSP, a CPU, a GPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in this disclosure).

[0144] In some examples, the communications manager 720 may be configured to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting) using or otherwise cooperating with the receiver 710, the transmitter 715, or both. For example, the communications manager 720 may receive information from the receiver 710, transmit information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both, or may acquire information, output information, or perform various other operations described herein.

[0145] The communications manager 720 may support wireless communications in a UE (e.g., device 705) according to examples disclosed herein. For example, the communications manager 720 may be configured as, or may possibly support, a means for receiving in a first downlink BWP system information indicating a first set of resources assigned for transmission of a random access message in a first uplink BWP. The communications manager 720 may be configured as, or may possibly support, a means for transmitting a random access message over the first set of resources according to the system information. The communications manager 720 may be configured as, or may possibly support, a means for receiving an RAR indicating a second set of resources different from the first set of resources. The communications manager 720 may be configured as, or may possibly support, a means for transmitting a retransmission of the random access message over the second set of resources according to the RAR.

[0146] Additionally or alternatively, the communications manager 720 may support wireless communications in a UE (e.g., device 705) according to examples disclosed herein. For example, the communications manager 720 may be configured as or may support as a means for receiving, in a first downlink BWP, system information indicating a first set of resources for requesting on-demand signaling. The communications manager 720 may be configured as or may support as a means for transmitting, in a first uplink BWP, a request for on-demand signaling over the first set of resources. The communications manager 720 may be configured as or may support as a means for receiving, in a first uplink BWP, an indication of a second set of resources allocated for receiving on-demand signaling. The communications manager 720 may be configured as or may support as a means for monitoring, in accordance with the indication, the second set of resources for on-demand signaling.

[0147] By including or configuring the communications manager 720 according to the examples described herein, the device 705 (e.g., at least one processor controlling, or possibly coupled (e.g., operatively, communicatively, functionally, electronically, and / or electrically) to, the receiver 710, the transmitter 715, the communications manager 720, or a combination thereof) can support techniques for reducing power consumption and more efficiently utilizing communications resources during an initial access procedure between the device 705 and other network entities. More specifically, the techniques and operations described herein can enable a network entity to provide the device 705 with a dynamically configured set of RACH resources that the device 705 can use for transmission (or retransmission) of a random access message. Dynamically allocating RACH resources to the device 705 can enable the device 705 to perform an initial access procedure with fewer collisions, reduced latency, and improved communications reliability, among other benefits. Moreover, the techniques described herein may enable the device 705 to activate (e.g., trigger) and receive on-demand signaling from a network entity during initial access, which may improve the likelihood of successful communication between the device 705 and the network entity.

[0148] 8 is a block diagram 800 of a device 805 supporting techniques for dynamic resource allocation in accordance with one or more aspects of the disclosure. The device 805 may be an example of an aspect of a device 705 or a UE 115 described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805 may also include at least one processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0149] The receiver 810 may provide a means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various traffic channels (e.g., control channels, data channels, traffic channels related to techniques for dynamic resource allocation). The information may be passed to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.

[0150] The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information such as packets associated with various traffic channels (e.g., control channels, data channels, traffic channels related to techniques for dynamic resource allocation), user data, control information, or any combination thereof. In some examples, the transmitter 815 may be collocated with the receiver 810 within a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.

[0151] The device 805, or various components thereof, may be an example of a means for performing various aspects of the techniques for dynamic resource allocation described herein. For example, the communications manager 820 may include a system information receiver 825, a random access message transmitter 830, a RAR receiver 835, a retransmission component 840, a request transmitter 845, an indication receiver 850, a monitoring component 855, or any combination thereof. The communications manager 820 may be an example of an aspect of the communications manager 720 described herein. In some examples, the communications manager 820, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise cooperating with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, transmit information to the transmitter 815, or may be integrated in combination with the receiver 810, the transmitter 815, or both, or may receive information, transmit information, or perform various other operations described herein.

[0152] The communications manager 820 may support wireless communications in a UE (e.g., device 805) according to examples disclosed herein. The system information receiver 825 may be configured as, or may possibly support, a means for receiving in a first downlink BWP system information indicating a first set of resources allocated for transmission of a random access message in a first uplink BWP. The random access message transmitter 830 may be configured as, or may possibly support, a means for transmitting a random access message over the first set of resources according to the system information. The RAR receiver 835 may be configured as, or may possibly support, a means for receiving an RAR indicating a second set of resources different from the first set of resources. The retransmission component 840 may be configured as, or may possibly support, a means for transmitting a retransmission of a random access message over the second set of resources according to the RAR.

[0153] Additionally or alternatively, the communications manager 820 can support wireless communications in a UE (e.g., device 805) according to examples disclosed herein. The system information receiver 825 may be configured as, or may possibly support, a means for receiving system information indicating a first set of resources for requesting on-demand signaling in a first downlink BWP. The request transmitter 845 may be configured as, or may possibly support, a means for transmitting a request for on-demand signaling over the first set of resources in a first uplink BWP. The indication receiver 850 may be configured as, or may possibly support, a means for receiving an indication of a second set of resources allocated for reception of on-demand signaling. The monitoring component 855 may be configured as, or may possibly support, a means for monitoring the second set of resources for on-demand signaling according to the indication.

[0154] 9 is a block diagram 900 of a communications manager 920 supporting techniques for dynamic resource allocation according to one or more aspects of the disclosure. Communications manager 920 may be an example of aspects of communications manager 720, communications manager 820, or both described herein. Communications manager 920, or various components thereof, may be an example of a means for performing various aspects of techniques for dynamic resource allocation described herein. For example, communications manager 920 may include a system information receiver 925, a random access message transmitter 930, a RAR receiver 935, a retransmission component 940, a request transmitter 945, an indication receiver 950, a monitoring component 955, a PDCCH receiver 960, an on-demand signaling receiver 965, a procedure execution component 970, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0155] The communications manager 920 can support wireless communications in the UE according to embodiments disclosed herein. The system information receiver 925 can be configured as, or in some cases can support, a means for receiving in a first downlink BWP system information indicating a first set of resources allocated for transmission of a random access message in a first uplink BWP. The random access message transmitter 930 can be configured as, or in some cases can support, a means for transmitting a random access message over the first set of resources in accordance with the system information. The RAR receiver 935 can be configured as, or in some cases can support, a means for receiving an RAR indicating a second set of resources different from the first set of resources. The retransmission component 940 can be configured as, or in some cases can support, a means for transmitting a retransmission of the random access message over the second set of resources in accordance with the RAR.

[0156] In some examples, to support receiving the RAR, the RAR receiver 935 may be configured as or may possibly support receiving an RAR indicating a second set of resources and a duration during which the second set of resources are available for retransmission of the random access message. In some examples, to support receiving the RAR, the RAR receiver 935 may be configured as or may possibly support receiving an RAR indicating a second set of resources multiplexed with the first set of resources in the time domain, the frequency domain, the spatial domain, or a combination thereof. In some examples, to support receiving the RAR, the RAR receiver 935 may be configured as or may possibly support receiving an RAR indicating a second set of resources in a first uplink BWP or in a second uplink BWP different from the first uplink BWP.

[0157] In some examples, to support receiving the RAR, the RAR receiver 935 may be configured as or possibly support receiving an RAR indicating a second set of resources and a random access signature including one or more of a RAPID, a UE identifier, or a temporary identifier associated with the random access resource, and sending a retransmission of the random access message is based on comparing the random access signature from the RAR with a random access signature associated with the random access message.

[0158] In some examples, to support receiving the RAR, the RAR receiver 935 may be configured as or possibly support a means for receiving an RAR indicating a random access resource pool including a second set of resources, and sending a retransmission of the random access message via the second set of resources is based on selecting the second set of resources from the random access resource pool.

[0159] In some examples, the PDCCH receiver 960 may be configured as or may possibly support a means for receiving a multicast or broadcast downlink control channel transmission indicating one or more resources assigned for reception of the RAR, the multicast or broadcast downlink control channel transmission including group-common downlink control information. In some examples, the monitoring component 955 may be configured as or may possibly support a means for monitoring one or more resources for the RAR according to the multicast or broadcast downlink control channel transmission, the RAR being scrambled using a group identifier.

[0160] In some examples, to support sending retransmissions of the random access message, the retransmission component 940 may be configured as or may possibly support a means for sending retransmissions of the random access message over a second set of resources according to a power ramping scheme, a beam switching scheme, an antenna switching scheme, a BWP switching scheme, a carrier switching scheme, a random backoff scheme, a frequency hopping scheme, a coverage extension scheme, or a combination thereof.

[0161] Additionally or alternatively, the communications manager 920 can support wireless communications in the UE according to embodiments disclosed herein. In some examples, the system information receiver 925 can be configured as or may support a means for receiving, in a first downlink BWP, system information indicating a first set of resources for requesting on-demand signaling. The request transmitter 945 can be configured as or may support a means for transmitting, in a first uplink BWP, a request for on-demand signaling over the first set of resources. The indication receiver 950 can be configured as or may support a means for receiving an indication of a second set of resources allocated for reception of on-demand signaling. The monitoring component 955 can be configured as or may support a means for monitoring the second set of resources for on-demand signaling according to the indication.

[0162] In some examples, to support receiving system information, the system information receiver 925 may be configured as, or may possibly support, a means for receiving system information indicating one or both of a first set of resources or a second set of resources in a first downlink BWP.

[0163] In some examples, to support receiving an indication of the second set of resources, the indication receiver 950 may be configured as, or possibly support, a means for receiving an RAR indicating an activation status of the second set of resources, availability of the second set of resources, or both.

[0164] In some examples, to support transmitting the request, the random access message transmitter 930 may be configured as, or may possibly support, a means for transmitting a random access message including a request for on-demand signaling over the first set of resources.

[0165] In some examples, the on-demand signaling receiver 965 may be configured as or may possibly support a means for receiving, via the second set of resources, on-demand signaling including a SIB, an SSB, a set of reference signals, a broadcast channel transmission, timing information associated with the on-demand signaling, or a combination thereof.

[0166] In some examples, the on-demand signaling receiver 965 may be configured as or possibly support a means for receiving, via the second set of resources, on-demand signaling indicating a set of uplink resources, a set of downlink resources, a set of measurement objects, a set of random access resources allocated for retransmission of the random access message, or a combination thereof.

[0167] In some examples, the on-demand signaling indicates a set of random access resources, and the retransmission component 940 may be configured as or may possibly support a means for sending a retransmission of the random access message via the set of random access resources indicated by the on-demand signaling.

[0168] In some examples, the on-demand signaling receiver 965 may be configured as or may possibly support a means for receiving a set of multiple repetitions of the on-demand signaling via the second set of resources.

[0169] In some examples, the on-demand signaling receiver 965 may be configured as or may possibly support a means for receiving on-demand signaling in a first downlink BWP or in a second downlink BWP different from the first downlink BWP.

[0170] In some examples, to support receiving an indication of the second set of resources, the indication receiver 950 may be configured as or possibly support a means for receiving an indication of a radio resource mapping between the second set of resources and the on-demand signaling, the radio resource mapping being associated with the UE's capabilities, the UE's service type, the UE's link quality, or a combination thereof. In some examples, the radio resource mapping indicates one or more of a synchronization raster, a channel raster, or a repetition pattern associated with the UE's capabilities, the UE's service type, the UE's link quality, or a combination thereof.

[0171] In some examples, the procedure execution component 970 may be configured as or may possibly support one or more of a BWP switching procedure, a carrier switching procedure, a beam switching procedure, an antenna switching procedure, a random backoff procedure, a frequency hopping procedure, or a coverage extension procedure based on receiving on-demand signaling over the second set of resources.

[0172] In some examples, the indication receiver 950 may be configured as, or in some cases may support, a means for receiving an indication that the on-demand signaling, the second set of resources, or both, is specific to the capabilities of the UE, the service type of the UE, the coverage level of the UE, the link quality of the UE, the contention resolution status of the UE, or a combination thereof.

[0173] In some examples, to support receiving system information, the system information receiver 925 may be configured as or may possibly support a means for receiving system information indicating a first set of resources for requesting on-demand signaling, the first set of resources including dedicated resources associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof.

[0174] In some examples, to support receiving an indication of the second set of resources, the indication receiver 950 may be configured as or possibly support a means for receiving a paging message during a paging occasion associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof, where the paging message includes an indication of the second set of resources.

[0175] 10 is a diagram of a system 1000 including a device 1005 supporting techniques for dynamic resource allocation according to one or more aspects of the disclosure. The device 1005 may be an example of or may include a component of a device 705, a device 805, or a UE 115 described herein. The device 1005 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1005 may include components for two-way voice and data communication, including components for transmitting and receiving communications, such as a communications manager 1020, an input / output (I / O) controller 1010, a transceiver 1015, an antenna 1025, a memory 1030, code 1035, and a processor 1040. These components may electronically communicate or otherwise be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1045).

[0176] The I / O controller 1010 may manage input and output signals for the device 1005. The I / O controller 1010 may also manage peripheral devices that are not integrated with the device 1005. In some cases, the I / O controller 1010 may represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 1010 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. Additionally or alternatively, the I / O controller 1010 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I / O controller 1010 may be implemented as part of at least one processor, such as the processor 1040. In some cases, a user may interact with the device 1005 through the I / O controller 1010 or through a hardware component controlled by the I / O controller 1010.

[0177] In some cases, the device 1005 may be equipped with a single antenna 1025. However, in some other cases, the device 1005 may have two or more antennas 1025 that may be capable of simultaneously transmitting or receiving multiple wireless transmissions. The transceiver 1015 may communicate bidirectionally via one or more antennas 1025, wired links, or wireless links described herein. For example, the transceiver 1015 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1015 may also include a modem for modulating packets and providing the modulated packets to the one or more antennas 1025 for transmission, and for demodulating packets received from the one or more antennas 1025. The transceiver 1015, or the transceiver 1015 and one or more antennas 1025, may be an example of a transmitter 715, a transmitter 815, a receiver 710, a receiver 810, or any combination or components thereof described herein.

[0178] The memory 1030 may include random access memory (RAM) and read-only memory (ROM). The memory 1030 may store computer-readable computer-executable code 1035 including instructions that, when executed by the processor 1040, cause the device 1005 to perform various functions described herein. The code 1035 may be stored in a non-transitory computer-readable medium, such as a system memory or another type of memory. In some cases, the code 1035 may not be directly executable by the processor 1040, but may (e.g., when compiled and executed) cause a computer to perform functions described herein. In some cases, the memory 1030 may include a basic I / O system (BIOS), which may control basic hardware or software operations, such as interactions with peripheral components or devices, among others.

[0179] The processor 1040 may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a GPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 1040 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated with the processor 1040. The processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1030) to cause the device 1005 to perform various functions (e.g., functions or tasks supporting techniques for dynamic resource allocation). For example, the device 1005, or a component of the device 1005, may include a processor 1040 and a memory 1030 coupled (e.g., operatively, communicatively, functionally, electronically, or electrically) to the processor 1040, where the processor 1040 and the memory 1030 are configured to perform various functions described herein.

[0180] The communications manager 1020 may support wireless communications in a UE (e.g., device 1005) according to examples disclosed herein. For example, the communications manager 1020 may be configured as, or may possibly support, a means for receiving in a first downlink BWP system information indicating a first set of resources assigned for transmission of a random access message in a first uplink BWP. The communications manager 1020 may be configured as, or may possibly support, a means for transmitting a random access message over the first set of resources according to the system information. The communications manager 1020 may be configured as, or may possibly support, a means for receiving an RAR indicating a second set of resources different from the first set of resources. The communications manager 1020 may be configured as, or may possibly support, a means for transmitting a retransmission of the random access message over the second set of resources according to the RAR.

[0181] Additionally or alternatively, the communications manager 1020 can support wireless communications in a UE (e.g., device 1005) according to examples disclosed herein. For example, the communications manager 1020 may be configured as or may support as a means for receiving, in a first downlink BWP, system information indicating a first set of resources for requesting on-demand signaling. The communications manager 1020 may be configured as or may support as a means for transmitting, in a first uplink BWP, a request for on-demand signaling over the first set of resources. The communications manager 1020 may be configured as or may support as a means for receiving, in a first uplink BWP, an indication of a second set of resources allocated for receiving on-demand signaling. The communications manager 1020 may be configured as or may support as a means for monitoring, in accordance with the indication, the second set of resources for on-demand signaling.

[0182] By including or configuring the communications manager 1020 according to the examples described herein, the device 1005 can support techniques for improved communication reliability, reduced latency, and improved user experience by retransmitting random access messages on dynamically configured RACH resources from a RACH resource pool. More specifically, the techniques and operations described herein can enable a network entity to provide the device 1005 with a dynamically configured set of RACH resources that the device 1005 can use for transmitting (or retransmitting) random access messages. Dynamically allocating RACH resources to the device 1005 can enable the device 1005 to perform initial access procedures with fewer collisions, reduced latency, and improved communication reliability, among other benefits. Moreover, the techniques described herein can enable the device 1005 to activate (e.g., trigger) and receive on-demand signaling from a network entity during initial access, which can improve the likelihood of successful communication between the device 1005 and the network entity.

[0183] In some examples, the communications manager 1020 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with the transceiver 1015, one or more antennas 1025, or any combination thereof. Although the communications manager 1020 is shown as a separate component, in some examples, one or more functions described with reference to the communications manager 1020 may be supported or performed by the processor 1040, the memory 1030, the code 1035, or any combination thereof. For example, the code 1035 may include instructions executable by the processor 1040 to cause the device 1005 to perform various aspects of the techniques for dynamic resource allocation described herein, or the processor 1040 and the memory 1030 may be otherwise configured to perform or support such operations.

[0184] 11 illustrates a block diagram 1100 of a device 1105 supporting techniques for dynamic resource allocation in accordance with one or more aspects of the disclosure. The device 1105 may be an example of an aspect of a network entity 105 described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communications manager 1120. The device 1105 may also include at least one processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0185] The receiver 1110 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with protocol stacks). The information may be passed to other components of the device 1105. In some examples, the receiver 1110 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 1110 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof.

[0186] The transmitter 1115 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1105. For example, the transmitter 1115 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with protocol stacks). In some examples, the transmitter 1115 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, the transmitter 1115 may support outputting information by transmitting signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1115 and the receiver 1110 may be collocated in a transceiver that may include a modem or be coupled (e.g., operatively, communicatively, functionally, electronically, or electrically) with a modem.

[0187] The communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be examples of means for performing various aspects of the techniques for dynamic resource allocation described herein. For example, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may support a method for performing one or more of the functions described herein.

[0188] In some examples, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in hardware (e.g., in a communications management circuit). The hardware may include at least one processor, DSP, CPU, GPU, ASIC, FPGA or other programmable logic device, microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing functions described in this disclosure. In some examples, the at least one processor and a memory coupled (e.g., operatively, communicatively, functionally, electronically, or electrically) to the at least one processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the at least one processor).

[0189] Additionally or alternatively, in some examples, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communications management software). When implemented in code executed by at least one processor, the functions of the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be performed by a general purpose processor, a DSP, a CPU, a GPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in this disclosure).

[0190] In some examples, the communications manager 1120 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with the receiver 1110, the transmitter 1115, or both. For example, the communications manager 1120 may receive information from the receiver 1110, transmit information to the transmitter 1115, or may be integrated in combination with the receiver 1110, the transmitter 1115, or both, or may receive information, transmit information, or perform various other operations described herein.

[0191] The communications manager 1120 may support wireless communications in a network entity (e.g., device 1105) according to examples disclosed herein. For example, the communications manager 1120 may be configured as, or may possibly support, a means for transmitting, in a first downlink BWP, system information indicating a first set of resources allocated for reception of a random access message in a first uplink BWP. The communications manager 1120 may be configured as, or may possibly support, a means for monitoring the first set of resources for a random access message according to the system information. The communications manager 1120 may be configured as, or may possibly support, a means for transmitting an RAR based on monitoring the first set of resources, the RAR indicating a second set of resources different from the first set of resources. The communications manager 1120 may be configured as, or may possibly support, a means for monitoring the second set of resources for retransmission of the random access message according to the RAR.

[0192] Additionally or alternatively, the communications manager 1120 may support wireless communications in a network entity (e.g., device 1105) according to examples disclosed herein. For example, the communications manager 1120 may be configured as or may support as a means for transmitting, in a first downlink BWP, system information indicating a first set of resources for requesting transmission of on-demand signaling. The communications manager 1120 may be configured as or may support as a means for receiving, in a first uplink BWP, a request for on-demand signaling over the first set of resources. The communications manager 1120 may be configured as or may support as a means for transmitting an indication of a second set of resources allocated for transmission of on-demand signaling. The communications manager 1120 may be configured as or may support as a means for transmitting, in accordance with the indication, the on-demand signaling over the second set of resources.

[0193] By including or configuring the communications manager 1120 according to examples described herein, the device 1105 (e.g., at least one processor controlling or possibly coupled (e.g., operatively, communicatively, functionally, electronically, or electrically) to the receiver 1110, the transmitter 1115, the communications manager 1120, or a combination thereof) may support techniques for reduced processing, reduced power consumption, and more efficient utilization of communications resources by configuring the UE to perform RACH retransmissions on dynamically allocated RACH resources from a RACH resource pool. More specifically, the techniques and operations described herein may enable the device 1105 to provide the UE with a dynamically configured set of RACH resources that the UE may use for transmission (or retransmission) of a random access message. Dynamically allocating RACH resources to the UE may enable the UE to perform an initial access procedure with fewer collisions, reduced latency, and improved communications reliability, among other benefits. Additionally, the techniques described herein may enable the UE to activate (e.g., trigger) and receive on-demand signaling from the device 1105 during initial access, which may improve the likelihood of successful communication between the UE and the device 1105.

[0194] 12 illustrates a block diagram 1200 of a device 1205 supporting techniques for dynamic resource allocation in accordance with one or more aspects of the present disclosure. The device 1205 may be an example of an aspect of a device 1105 or a network entity 105 as described herein. The device 1205 may include a receiver 1210, a transmitter 1215, and a communications manager 1220. The device 1205 may also include at least one processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0195] The receiver 1210 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with protocol stacks). The information may be passed to other components of the device 1205. In some examples, the receiver 1210 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 1210 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof.

[0196] The transmitter 1215 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1205. For example, the transmitter 1215 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with protocol stacks). In some examples, the transmitter 1215 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, the transmitter 1215 may support outputting information by transmitting signals via one or more wired (e.g., electrical, optical fiber) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1215 and the receiver 1210 may be collocated in a transceiver that may include a modem or be coupled (e.g., operatively, communicatively, functionally, electronically, or electrically) with a modem.

[0197] The device 1205, or various components thereof, may be an example of a means for performing various aspects of the techniques for dynamic resource allocation described herein. For example, the communications manager 1220 may include a system information transmitter 1225, a resource monitoring component 1230, a RAR transmitter 1235, a retransmission monitoring component 1240, a request receiver 1245, an indication transmitter 1250, an on-demand signaling transmitter 1255, or any combination thereof. The communications manager 1220 may be an example of an aspect of the communications manager 1120 described herein. In some examples, the communications manager 1220, or various components thereof, may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with the receiver 1210, the transmitter 1215, or both. For example, the communications manager 1220 may receive information from the receiver 1210 and transmit information to the transmitter 1215, or may be integrated in combination with the receiver 1210, the transmitter 1215, or both, or may receive information, transmit information, or perform various other operations described herein.

[0198] The communications manager 1220 may support wireless communications in a network entity (e.g., device 1205) according to examples disclosed herein. The system information transmitter 1225 may be configured as, or may possibly support, a means for transmitting system information in a first downlink BWP indicating a first set of resources allocated for reception of a random access message in a first uplink BWP. The resource monitoring component 1230 may be configured as, or may possibly support, a means for monitoring the first set of resources for a random access message according to the system information. The RAR transmitter 1235 may be configured as, or may possibly support, a means for transmitting an RAR based on monitoring the first set of resources, the RAR indicating a second set of resources different from the first set of resources. The retransmission monitoring component 1240 may be configured as, or may possibly support, a means for monitoring the second set of resources for retransmission of a random access message according to the RAR.

[0199] Additionally or alternatively, the communications manager 1220 may support wireless communications in a network entity (e.g., device 1205) according to examples disclosed herein. The system information transmitter 1225 may be configured as, or may possibly support, a means for transmitting, in a first downlink BWP, system information indicating a first set of resources for requesting transmission of on-demand signaling. The request receiver 1245 may be configured as, or may possibly support, a means for receiving, in a first uplink BWP, a request for on-demand signaling via the first set of resources. The indication transmitter 1250 may be configured as, or may possibly support, a means for transmitting an indication of a second set of resources allocated for transmission of on-demand signaling. The on-demand signaling transmitter 1255 may be configured as, or may possibly support, a means for transmitting on-demand signaling via the second set of resources according to the indication.

[0200] 13 is a block diagram 1300 of a communications manager 1320 supporting techniques for dynamic resource allocation according to one or more aspects of the disclosure. The communications manager 1320 may be an example of aspects of the communications manager 1120, the communications manager 1220, or both described herein. The communications manager 1320, or various components thereof, may be an example of a means for performing various aspects of the techniques for dynamic resource allocation described herein. For example, the communications manager 1320 may include a system information transmitter 1325, a resource monitoring component 1330, a RAR transmitter 1335, a retransmission monitoring component 1340, a request receiver 1345, an indication transmitter 1350, an on-demand signaling transmitter 1355, a PDCCH transmitter 1360, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses), which may include communications within a protocol layer of a protocol stack, communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualization component associated with network entity 105, between devices, components, or virtualization components associated with network entity 105), or any combination thereof.

[0201] The communications manager 1320 may support wireless communications in a network entity according to examples disclosed herein. The system information transmitter 1325 may be configured as, or may possibly support, a means for transmitting system information in a first downlink BWP indicating a first set of resources allocated for reception of a random access message in a first uplink BWP. The resource monitoring component 1330 may be configured as, or may possibly support, a means for monitoring the first set of resources for a random access message according to the system information. The RAR transmitter 1335 may be configured as, or may possibly support, a means for transmitting an RAR based on monitoring the first set of resources, the RAR indicating a second set of resources different from the first set of resources. The retransmission monitoring component 1340 may be configured as, or may possibly support, a means for monitoring the second set of resources for retransmission of a random access message according to the RAR.

[0202] In some examples, to support transmitting an RAR, the RAR transmitter 1335 may be configured as or possibly support a means for transmitting an RAR indicating a second set of resources and a duration for which the second set of resources are available for retransmission of the random access message.

[0203] In some examples, to support transmitting the RAR, the RAR transmitter 1335 may be configured as, or may possibly support, a means for transmitting an RAR indicating a second set of resources that are multiplexed with the first set of resources in the time domain, the frequency domain, the spatial domain, or a combination thereof. In some examples, to support transmitting the RAR, the RAR transmitter 1335 may be configured as, or may possibly support, a means for transmitting an RAR indicating the second set of resources in a first uplink BWP or in a second uplink BWP different from the first uplink BWP. In some examples, to support transmitting the RAR, the RAR transmitter 1335 may be configured as, or may possibly support, a means for transmitting an RAR indicating the second set of resources and a random access signature including one or more of a RAPID, a UE identifier, or a temporary identifier associated with the random access resource. In some examples, to support transmitting the RAR, the RAR transmitter 1335 may be configured as, or may possibly support, a means for transmitting an RAR indicating a random access resource pool including the second set of resources.

[0204] In some examples, the PDCCH transmitter 1360 may be configured as or may possibly support a means for transmitting a multicast or broadcast downlink control channel transmission indicating one or more resources allocated for transmission of the RAR, the multicast or broadcast downlink control channel transmission including group-common downlink control information. In some examples, the RAR transmitter 1335 may be configured as or may possibly support a means for transmitting the RAR via one or more resources in accordance with the multicast or broadcast downlink control channel transmission, the RAR being scrambled using the group identifier.

[0205] In some examples, the retransmission monitoring component 1340 may be configured as or may possibly support a means for receiving retransmissions of the random access message over the second set of resources according to a power ramping scheme, a beam switching scheme, an antenna switching scheme, a BWP switching scheme, a carrier switching scheme, a random backoff scheme, a frequency hopping scheme, a coverage extension scheme, or a combination thereof.

[0206] Additionally or alternatively, the communications manager 1320 may support wireless communications in the network entity according to embodiments disclosed herein. In some examples, the system information transmitter 1325 may be configured as, or may possibly support, a means for transmitting, in a first downlink BWP, system information indicating a first set of resources for requesting transmission of on-demand signaling. The request receiver 1345 may be configured as, or may possibly support, a means for receiving, in a first uplink BWP, a request for on-demand signaling via the first set of resources. The indication transmitter 1350 may be configured as, or may possibly support, a means for transmitting an indication of a second set of resources allocated for transmission of on-demand signaling. The on-demand signaling transmitter 1355 may be configured as, or may possibly support, a means for transmitting on-demand signaling via the second set of resources according to the indication.

[0207] In some examples, to support transmitting system information, the system information transmitter 1325 may be configured as or may possibly support a means for transmitting system information indicating one or both of the first set of resources or the second set of resources in the first downlink BWP. In some examples, to support transmitting an indication of the second set of resources, the indication transmitter 1350 may be configured as or may possibly support a means for transmitting an RAR indicating an activation status of the second set of resources, an availability of the second set of resources, or both. In some examples, to support receiving a request, the request receiver 1345 may be configured as or may possibly support a means for receiving a random access message including a request for on-demand signaling over the first set of resources.

[0208] In some examples, to support transmitting on-demand signaling, the on-demand signaling transmitter 1355 may be configured as or may possibly support transmitting on-demand signaling including a SIB, an SSB, a set of reference signals, a broadcast channel transmission, timing information associated with the on-demand signaling, or a combination thereof, via the second set of resources. In some examples, to support transmitting on-demand signaling, the on-demand signaling transmitter 1355 may be configured as or may possibly support transmitting on-demand signaling indicating a set of uplink resources, a set of downlink resources, a set of measurement objects, a set of random access resources assigned for receiving the random access message, or a combination thereof, via the second set of resources. In some examples, the on-demand signaling indicates a set of random access resources, and the retransmission monitoring component 1340 may be configured as or may possibly support receiving retransmissions of the random access message via the set of random access resources indicated by the on-demand signaling.

[0209] In some examples, to support transmitting on-demand signaling, the on-demand signaling transmitter 1355 may be configured as, or may possibly support, a means for transmitting a set of multiple iterations of on-demand signaling over a second set of resources. In some examples, to support transmitting on-demand signaling, the on-demand signaling transmitter 1355 may be configured as, or may possibly support, a means for transmitting on-demand signaling in a second downlink BWP that is different from a first downlink BWP associated with the transmission of system information. In some examples, to support transmitting on-demand signaling, the on-demand signaling transmitter 1355 may be configured as, or may possibly support, a means for transmitting on-demand signaling in a first downlink BWP associated with the transmission of system information.

[0210] In some examples, to support transmitting an indication of the second set of resources, the indication transmitter 1350 may be configured as or possibly support a means for transmitting an indication of a radio resource mapping between the second set of resources and on-demand signaling, the radio resource mapping being associated with a UE capability, a service type, a link quality, or a combination thereof. In some examples, the radio resource mapping indicates one or more of a synchronization raster, a channel raster, or a repetition pattern associated with the UE capability, the service type, the link quality, or a combination thereof.

[0211] In some examples, to support transmitting on-demand signaling, the on-demand signaling transmitter 1355 may be configured as or may possibly support as a means for transmitting on-demand signaling including instructions to perform a BWP switching procedure, a carrier switching procedure, a beam switching procedure, an antenna switching procedure, a random backoff procedure, a frequency hopping procedure, or a coverage extension procedure.

[0212] In some examples, the indication transmitter 1350 may be configured as, or in some cases may support, a means for transmitting an indication that the on-demand signaling, the second set of resources, or both, is specific to a UE capability, a service type, a coverage level, a link quality, a contention resolution status, or a combination thereof.

[0213] In some examples, to support transmitting system information, the system information transmitter 1325 may be configured as or possibly support a means for transmitting system information indicating a first set of resources for requesting on-demand signaling, the first set of resources including dedicated resources associated with UE capabilities, service type, link quality, or a combination thereof.

[0214] In some examples, to support sending an indication of the second set of resources, the indication transmitter 1350 may be configured as, or may possibly support, a means for transmitting a paging message during a paging occasion associated with the UE capability, service type, link quality, or a combination thereof, where the paging message includes an indication of the second set of resources.

[0215] In some examples, the request receiver 1345 may be configured as or may otherwise support a means for identifying a request for on-demand signaling based on monitoring an energy level associated with the first set of resources. In some examples, the request receiver 1345 may be configured as or may otherwise support a means for determining that the request corresponds to a UE capability, a service type, a link quality, a contention resolution status, a coverage level, or a combination thereof.

[0216] FIG. 14 is a diagram of a system 1400 including a device 1405 supporting techniques for dynamic resource allocation according to one or more aspects of the disclosure. The device 1405 may be an example of or may include a component of a device 1105, a device 1205, or a network entity 105 as described herein. The device 1405 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which may include communication via one or more wired interfaces, via one or more wireless interfaces, or via any combination thereof. The device 1405 may include components that support outputting and obtaining communications, such as a communications manager 1420, a transceiver 1410, an antenna 1415, a memory 1425, code 1430, and a processor 1435. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1440).

[0217] The transceiver 1410 may support bidirectional communication over a wired link, a wireless link, or both, as described herein. In some examples, the transceiver 1410 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1410 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1405 may include one or more antennas 1415 that may be capable of transmitting or receiving (e.g., simultaneously) wireless transmissions. The transceiver 1410 may also include a modem for modulating a signal, providing the modulated signal for transmission (e.g., by a wired transmitter, by one or more antennas 1415), receiving the modulated signal (e.g., from a wired receiver, from one or more antennas 1415), and demodulating the signal. The transceiver 1410, or the transceiver 1410 and one or more antennas 1415 or wired interface, may be an example of the transmitter 1115, the transmitter 1215, the receiver 1110, the receiver 1210, or any combination or component thereof described herein, if applicable. In some examples, the transceiver may be operable to support communication over one or more communication links (e.g., the communication link 125, the backhaul communication link 120, the midhaul communication link 162, the fronthaul communication link 168).

[0218] The memory 1425 may include RAM and ROM. The memory 1425 may store computer readable computer executable code 1430 including instructions that, when executed by the processor 1435, cause the device 1405 to perform various functions described herein. The code 1430 may be stored in a non-transitory computer readable medium, such as a system memory or another type of memory. In some cases, the code 1430 may not be directly executable by the processor 1435, but may (e.g., when compiled and executed) cause the computer to perform functions described herein. In some cases, the memory 1425 may include a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0219] The processor 1435 may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, a GPU, an FPGA, a microcontroller, a programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof). In some cases, the processor 1435 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated with the processor 1435. The processor 1435 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1425) to cause the device 1405 to perform various functions (e.g., functions or tasks supporting techniques for dynamic resource allocation). For example, the device 1405, or a component of the device 1405, may include a processor 1435 and a memory 1425 coupled (e.g., operatively, communicatively, functionally, electronically, and / or electrically) to the processor 1435, where the processor 1435 and the memory 1425 are configured to perform various functions described herein. The processor 1435 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that may host functions (e.g., by executing the code 1430) to perform the functions of the device 1405.

[0220] In some examples, the bus 1440 may support communications of (e.g., within) a protocol layer of a protocol stack. In some examples, the bus 1440 may support communications associated with logical channels of a protocol stack (e.g., between protocol layers of a protocol stack), which may include communications performed within a component of the device 1405 or between different components of the device 1405 that may be collocated or located in different locations (e.g., the device 1405 may refer to a system in which one or more of the communications manager 1420, the transceiver 1410, the memory 1425, the code 1430, and the processor 1435 may be located in one of the different components or may be divided among the different components).

[0221] In some examples, the communications manager 1420 may manage aspects of communications with the core network 130 (e.g., via one or more wired or wireless backhaul links). For example, the communications manager 1420 may manage forwarding of data communications to client devices, such as one or more UEs 115. In some examples, the communications manager 1420 may manage communications with other network entities 105 and may include a controller or scheduler for cooperating with the other network entities 105 to control communications with the UEs 115. In some examples, the communications manager 1420 may support an X2 interface in LTE / LTE-A wireless communications network technologies to communicate between the network entities 105.

[0222] The communications manager 1420 may support wireless communications in a network entity according to examples disclosed herein. For example, the communications manager 1420 may be configured as or may support a means for transmitting system information in a first downlink BWP indicating a first set of resources allocated for reception of a random access message in a first uplink BWP. The communications manager 1420 may be configured as or may support a means for monitoring the first set of resources for a random access message according to the system information. The communications manager 1420 may be configured as or may support a means for transmitting an RAR based on monitoring the first set of resources, the RAR indicating a second set of resources different from the first set of resources. The communications manager 1420 may be configured as or may support a means for monitoring the second set of resources for retransmission of the random access message according to the RAR.

[0223] Additionally or alternatively, the communications manager 1420 may support wireless communications in the network entity according to embodiments disclosed herein. For example, the communications manager 1420 may be configured as or may support a means for transmitting, in a first downlink BWP, system information indicating a first set of resources for requesting transmission of on-demand signaling. The communications manager 1420 may be configured as or may support a means for receiving, in a first uplink BWP, a request for on-demand signaling over the first set of resources. The communications manager 1420 may be configured as or may support a means for transmitting an indication of a second set of resources allocated for transmission of on-demand signaling. The communications manager 1420 may be configured as or may support a means for transmitting, in accordance with the indication, the on-demand signaling over the second set of resources.

[0224] By including or configuring the communications manager 1420 according to examples as described herein, the device 1405 can support more efficient utilization of communications resources during an initial access procedure between the UE and the device 1405. More specifically, the techniques and operations described herein can enable the device 1405 to provide the UE with a dynamically configured set of RACH resources that the UE can use for transmission (or retransmission) of a random access message. Dynamically allocating RACH resources to the UE can enable the UE to perform an initial access procedure with fewer collisions, reduced latency, and improved communication reliability, among other benefits. Furthermore, the techniques described herein can enable the UE to activate (e.g., trigger) and receive on-demand signaling from the device 1405 during initial access, which can improve the likelihood of successful communication between the UE and the device 1405.

[0225] In some examples, the communications manager 1420 may be configured to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting) using or otherwise cooperating with the transceiver 1410, one or more antennas 1415 (e.g., if applicable), or any combination thereof. Although the communications manager 1420 is shown as a separate component, in some examples, one or more functions described with reference to the communications manager 1420 may be supported or performed by the processor 1435, the memory 1425, the code 1430, the transceiver 1410, or any combination thereof. For example, the code 1430 may include instructions executable by the processor 1435 to cause the device 1405 to perform various aspects of the techniques for dynamic resource allocation described herein, or the processor 1435 and the memory 1425 may be otherwise configured to perform or support such operations.

[0226] FIG. 15 illustrates a flowchart illustrating a method 1500 supporting techniques for dynamic resource allocation according to one or more aspects of the present disclosure. The operations of method 1500 may be performed by a UE or components thereof as described herein. For example, the operations of method 1500 may be performed by the UE 115 described with reference to FIGS. 1-10. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0227] At 1505, the method may include receiving, in a first downlink bandwidth portion, system information indicating a first set of resources assigned for transmission of a random access message in a first uplink bandwidth portion. The operations of 1505 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a system information receiver 925 as described with reference to FIG.

[0228] At 1510, the method may include transmitting a random access message over a first set of resources in accordance with the system information. The operations of 1510 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1510 may be performed by a random access message transmitter 930 as described with reference to FIG.

[0229] At 1515, the method may include receiving a random access response indicating a second set of resources different from the first set of resources. The operations of 1515 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1515 may be performed by a RAR receiver 935 as described with reference to FIG.

[0230] At 1520, the method may include transmitting a retransmission of the random access message over the second set of resources in accordance with the random access response. The operations of 1520 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1520 may be performed by a retransmission component 940 as described with reference to FIG.

[0231] FIG. 16 illustrates a flowchart illustrating a method 1600 supporting techniques for dynamic resource allocation according to one or more aspects of the present disclosure. The operations of method 1600 may be implemented by a network entity or components thereof as described herein. For example, the operations of method 1600 may be performed by a network entity as described with reference to FIGS. 1-6 and 11-14. In some examples, the network entity may execute a set of instructions to control functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may perform aspects of the described functions using dedicated hardware.

[0232] At 1605, the method may include transmitting, in a first downlink bandwidth portion, system information indicating a first set of resources assigned for reception of a random access message in a first uplink bandwidth portion. The operations of 1605 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1605 may be performed by a system information transmitter 1325 as described with reference to FIG.

[0233] At 1610, the method may include monitoring a first set of resources for a random access message according to the system information. The operations of 1610 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1610 may be implemented by a resource monitoring component 1330 as described with reference to FIG.

[0234] At 1615, the method may include transmitting a random access response based at least in part on monitoring the first set of resources, the random access response indicating a second set of resources different from the first set of resources. The operations of 1615 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1615 may be performed by a RAR transmitter 1335 as described with reference to FIG.

[0235] At 1620, the method may include monitoring a second set of resources for retransmission of the random access message according to the random access response. The operations of 1620 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1620 may be implemented by a retransmission monitoring component 1340, as described with reference to FIG.

[0236] FIG. 17 illustrates a flowchart illustrating a method 1700 supporting techniques for dynamic resource allocation according to one or more aspects of the present disclosure. The operations of method 1700 may be performed by a UE or components thereof as described herein. For example, the operations of method 1700 may be performed by the UE 115 described with reference to FIGS. 1-10. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may perform aspects of the described functions using dedicated hardware.

[0237] At 1705, the method may include receiving system information indicating a first set of resources for requesting on-demand signaling in a first downlink bandwidth portion. The operations of 1705 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1705 may be performed by a system information receiver 925 described with reference to FIG.

[0238] At 1710, the method may include transmitting a request for on-demand signaling over a first set of resources in a first uplink bandwidth portion. The operations of 1710 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1710 may be performed by a request transmitter 945 as described with reference to FIG.

[0239] At 1715, the method may include receiving an indication of a second set of resources allocated for reception of the on-demand signaling. The operations of 1715 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1715 may be performed by an indication receiver 950 as described with reference to FIG.

[0240] At 1720, the method may include monitoring the second set of resources for on-demand signaling in accordance with the instructions. The operations of 1720 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1720 may be performed by a monitoring component 955 as described with reference to FIG.

[0241] FIG. 18 illustrates a flowchart illustrating a method 1800 supporting techniques for dynamic resource allocation according to one or more aspects of the present disclosure. The operations of method 1800 may be implemented by a network entity or components thereof as described herein. For example, the operations of method 1800 may be performed by a network entity as described with reference to FIGS. 1-6 and 11-14. In some examples, the network entity may execute a set of instructions to control functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may perform aspects of the described functions using dedicated hardware.

[0242] At 1805, the method may include transmitting system information indicating a first set of resources for requesting transmission of the on-demand signaling in the first downlink bandwidth portion. The operations of 1805 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1805 may be performed by the system information transmitter 1325 as described with reference to FIG.

[0243] At 1810, the method may include receiving a request for on-demand signaling over a first set of resources in a first uplink bandwidth portion. The operations of 1810 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1810 may be implemented by the request receiver 1345 described with reference to FIG.

[0244] At 1815, the method may include transmitting an indication of the second set of resources allocated for transmission of the on-demand signaling. The operations of 1815 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1815 may be performed by an indication transmitter 1350 as described with reference to FIG.

[0245] At 1820, the method may include transmitting on-demand signaling over the second set of resources in accordance with the instructions. The operations of 1820 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operations of 1820 may be performed by an on-demand signaling transmitter 1355 as described with reference to FIG.

[0246] The following provides a summary of aspects of the disclosure.

[0247] Aspect 1: A method for wireless communication in a UE, the method including: receiving, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for transmission of a random access message in a first uplink bandwidth portion; transmitting the random access message over the first set of resources in accordance with the system information; receiving a random access response indicating a second set of resources different from the first set of resources; and transmitting a retransmission of the random access message over the second set of resources in accordance with the random access response.

[0248] Aspect 2: The method of aspect 1, wherein receiving the random access response includes receiving a random access response indicating a second set of resources and a duration during which the second set of resources are available for retransmission of the random access message.

[0249] Aspect 3: A method as described in any of aspects 1 to 2, wherein receiving a random access response includes receiving a random access response indicating a second set of resources to be multiplexed with the first set of resources in a time domain, a frequency domain, a spatial domain, or a combination thereof.

[0250] Aspect 4: A method as described in any of aspects 1 to 3, wherein receiving the random access response includes receiving a random access response indicating a second set of resources in the first uplink bandwidth portion or in a second uplink bandwidth portion different from the first uplink bandwidth portion.

[0251] Aspect 5: The method of any of aspects 1 to 4, wherein receiving the random access response includes receiving a random access response indicating a second set of resources and a random access signature comprising one or more of a random access preamble identifier, a UE identifier, or a temporary identifier associated with the random access resources, and sending a retransmission of the random access message is based at least in part on comparing the random access signature from the random access response with a random access signature associated with the random access message.

[0252] Aspect 6: The method of any of aspects 1 to 5, wherein receiving the random access response includes receiving the random access response indicating a random access resource pool comprising a second set of resources, and sending a retransmission of the random access message via the second set of resources is based at least in part on selecting the second set of resources from the random access resource pool.

[0253] Aspect 7: The method of any one of aspects 1 to 6, further comprising: receiving a multicast or broadcast downlink control channel transmission indicating one or more resources assigned for receiving a random access response, where the multicast or broadcast downlink control channel transmission comprises group common downlink control information; and monitoring, in accordance with the multicast or broadcast downlink control channel transmission, one or more resources for the random access response, where the random access response is scrambled using a group identifier.

[0254] Aspect 8: A method as described in any one of aspects 1 to 7, wherein transmitting a retransmission of the random access message includes transmitting the retransmission of the random access message over a second set of resources according to a power ramping scheme, a beam switching scheme, an antenna switching scheme, a bandwidth portion switching scheme, a carrier switching scheme, a random backoff scheme, a frequency hopping scheme, a coverage extension scheme, or a combination thereof.

[0255] Aspect 9: A method for wireless communication in a network entity, the method including: transmitting, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for reception of a random access message in a first uplink bandwidth portion; monitoring the first set of resources for the random access message in accordance with the system information; transmitting a random access response based at least in part on the monitoring of the first set of resources, the random access response indicating a second set of resources different from the first set of resources; and monitoring the second set of resources for retransmission of the random access message in accordance with the random access response.

[0256] Aspect 10: The method of aspect 9, wherein transmitting the random access response includes transmitting a random access response indicating a second set of resources and a duration during which the second set of resources are available for retransmission of the random access message.

[0257] Aspect 11: The method of any of aspects 9 to 10, wherein transmitting the random access response includes transmitting a random access response indicating a second set of resources multiplexed with the first set of resources in a time domain, a frequency domain, a spatial domain, or a combination thereof.

[0258] Aspect 12: A method as described in any of aspects 9 to 11, wherein transmitting the random access response includes transmitting a random access response indicating a second set of resources in the first uplink bandwidth portion or in a second uplink bandwidth portion different from the first uplink bandwidth portion.

[0259] Aspect 13: The method of any of aspects 9 to 12, wherein transmitting the random access response includes transmitting a random access response indicating a second set of resources and a random access signature comprising one or more of a random access preamble identifier, a UE identifier, or a temporary identifier associated with the random access resource.

[0260] Aspect 14: The method of any of aspects 9 to 13, wherein transmitting the random access response includes transmitting a random access response indicating a random access resource pool comprising the second set of resources.

[0261] Aspect 15: The method of any of aspects 9 to 14, further comprising: transmitting a multicast or broadcast downlink control channel transmission indicating one or more resources assigned for transmitting a random access response, where the multicast or broadcast downlink control channel transmission comprises group common downlink control information; and transmitting the random access response via the one or more resources in accordance with the multicast or broadcast downlink control channel transmission, where the random access response is scrambled using the group identifier.

[0262] Aspect 16: The method of any of aspects 9 to 15, further comprising receiving a retransmission of the random access message over a second set of resources according to a power ramping scheme, a beam switching scheme, an antenna switching scheme, a bandwidth portion switching scheme, a carrier switching scheme, a random backoff scheme, a frequency hopping scheme, a coverage extension scheme, or a combination thereof.

[0263] Aspect 17: A method for wireless communication in a UE, the method including: receiving system information indicating a first set of resources for requesting on-demand signaling in a first downlink bandwidth portion; transmitting a request for on-demand signaling via the first set of resources in a first uplink bandwidth portion; receiving an indication of a second set of resources assigned for reception of the on-demand signaling; and monitoring the second set of resources for the on-demand signaling in accordance with the indication.

[0264] Aspect 18: The method of aspect 17, wherein receiving system information includes receiving system information indicating one or both of a first set of resources or a second set of resources in a first downlink bandwidth portion.

[0265] Aspect 19: The method of any of aspects 17 to 18, wherein receiving an indication of the second set of resources includes receiving a random access response indicating an activation status of the second set of resources, availability of the second set of resources, or both.

[0266]

[0041] Aspect 20: The method of any of aspects 17 to 19, wherein transmitting the request includes transmitting a random access message comprising a request for on-demand signaling over the first set of resources.

[0267] Aspect 21: The method of any of aspects 17 to 20, further comprising receiving, via a second set of resources, on-demand signaling comprising a system information block, a synchronization signal block, a set of reference signals, a broadcast channel transmission, timing information associated with the on-demand signaling, or a combination thereof.

[0268] Aspect 22: A method as described in any of aspects 17 to 21, further comprising receiving on-demand signaling over a second set of resources indicating a set of uplink resources, a set of downlink resources, a set of measurement objects, a set of random access resources allocated for retransmission of the random access message, or a combination thereof.

[0269] Aspect 23: The method of aspect 22, wherein the on-demand signaling indicates a set of random access resources, the method further including sending a retransmission of the random access message via the set of random access resources indicated by the on-demand signaling.

[0270]

[0041] Aspect 24: The method of any of aspects 17 to 23, further comprising receiving multiple repetitions of the on-demand signaling over a second set of resources.

[0271] Aspect 25: The method of any of aspects 17 to 24, further comprising receiving on-demand signaling in a first downlink bandwidth portion or in a second downlink bandwidth portion different from the first downlink bandwidth portion.

[0272] Aspect 26: The method of any of aspects 17 to 25, wherein receiving an indication of the second set of resources includes receiving an indication of radio resource mapping between the second set of resources and on-demand signaling, where the radio resource mapping is associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof.

[0273] Aspect 27: The method of aspect 26, wherein the radio resource mapping indicates one or more of a synchronization raster, a channel raster, or a repetition pattern associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof.

[0274] Aspect 28: The method of any of aspects 17 to 27, further comprising performing one or more of a bandwidth portion switching procedure, a carrier switching procedure, a beam switching procedure, an antenna switching procedure, a random backoff procedure, a frequency hopping procedure, or a coverage extension procedure based at least in part on receiving on-demand signaling over the second set of resources.

[0275] Aspect 29: The method of any of aspects 17 to 28, further comprising receiving an indication that the on-demand signaling, the second set of resources, or both, are specific to a capability of the UE, a service type of the UE, a coverage level of the UE, a link quality of the UE, a contention resolution status of the UE, or a combination thereof.

[0276] Aspect 30: The method of any of aspects 17 to 29, wherein receiving system information includes receiving system information indicating a first set of resources for requesting on-demand signaling, the first set of resources comprising dedicated resources associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof.

[0277] Aspect 31: A method as described in any of aspects 17 to 30, wherein receiving an indication of the second set of resources includes receiving a paging message on a paging occasion associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof, wherein the paging message comprises an indication of the second set of resources.

[0278] Aspect 32: A method for wireless communication in a network entity, the method including: transmitting, in a first downlink bandwidth portion, system information indicating a first set of resources for requesting transmission of on-demand signaling; receiving, in a first uplink bandwidth portion, a request for on-demand signaling via the first set of resources; transmitting an indication of a second set of resources allocated for transmission of the on-demand signaling; and transmitting the on-demand signaling via the second set of resources in accordance with the indication.

[0279] Aspect 33: The method of aspect 32, wherein transmitting system information includes transmitting system information indicating one or both of a first set of resources or a second set of resources in a first downlink bandwidth portion.

[0280] Aspect 34: A method as described in any of aspects 32 to 33, wherein sending an indication of the second set of resources includes sending a random access response indicating an activation status of the second set of resources, availability of the second set of resources, or both.

[0281]

[0041] Aspect 35: The method of any of aspects 32 to 34, wherein receiving the request includes receiving a random access message over the first set of resources comprising a request for on-demand signaling.

[0282] Aspect 36: The method of any of aspects 32 to 35, wherein transmitting the on-demand signaling further includes transmitting, via a second set of resources, on-demand signaling comprising a system information block, a synchronization signal block, a set of reference signals, a broadcast channel transmission, timing information associated with the on-demand signaling, or a combination thereof.

[0283] Aspect 37: A method as described in any of aspects 32 to 36, wherein transmitting the on-demand signaling further includes transmitting, via a second set of resources, on-demand signaling indicating a set of uplink resources, a set of downlink resources, a set of measurement objects, a set of random access resources allocated for receiving the random access message, or a combination thereof.

[0284] Aspect 38: The method of aspect 37, wherein the on-demand signaling indicates a set of random access resources, the method further including receiving a retransmission of the random access message via the set of random access resources indicated by the on-demand signaling.

[0285] Aspect 39: The method of any of aspects 32 to 38, wherein transmitting the on-demand signaling further includes transmitting multiple repetitions of the on-demand signaling over a second set of resources.

[0286] Aspect 40: The method of any of aspects 32 to 39, wherein transmitting the on-demand signaling includes transmitting the on-demand signaling in a second downlink bandwidth portion different from a first downlink bandwidth portion associated with transmitting the system information.

[0287] Aspect 41: The method of any of aspects 32 to 39, wherein transmitting the on-demand signaling includes transmitting the on-demand signaling in a first downlink bandwidth portion associated with transmitting the system information.

[0288] Aspect 42: The method of any of aspects 32 to 41, wherein transmitting an indication of the second set of resources includes transmitting an indication of radio resource mapping between the second set of resources and on-demand signaling, where the radio resource mapping is associated with UE capability, service type, link quality, or a combination thereof.

[0289] Aspect 43: The method of aspect 42, wherein the radio resource mapping indicates one or more of a synchronization raster, a channel raster, or a repetition pattern associated with a UE capability, a service type, a link quality, or a combination thereof.

[0290] Aspect 44: A method as described in any of aspects 32 to 43, wherein transmitting on-demand signaling includes transmitting on-demand signaling including instructions to perform a bandwidth portion switching procedure, a carrier switching procedure, a beam switching procedure, an antenna switching procedure, a random backoff procedure, a frequency hopping procedure, or a coverage extension procedure.

[0291] Aspect 45: The method of any of aspects 32 to 44, further comprising sending an indication that the on-demand signaling, the second set of resources, or both, are specific to a UE capability, a service type, a coverage level, a link quality, a contention resolution status, or a combination thereof.

[0292] Aspect 46: The method of any of aspects 32 to 45, wherein transmitting system information includes transmitting system information indicating a first set of resources for requesting on-demand signaling, the first set of resources comprising dedicated resources associated with a UE capability, a service type, a link quality, or a combination thereof.

[0293] Aspect 47: The method of any of aspects 32 to 46, wherein sending an indication of the second set of resources includes sending a paging message in a paging occasion associated with the UE capability, service type, link quality, or a combination thereof, wherein the paging message comprises an indication of the second set of resources.

[0294] Aspect 48: The method of any of aspects 32 to 47, further comprising: identifying a request for on-demand signaling based at least in part on monitoring an energy level associated with the first set of resources; and determining that the request corresponds to a UE capability, a service type, a link quality, a contention resolution status, a coverage level, or a combination thereof.

[0295] Aspect 49: An apparatus for wireless communication in a UE, comprising: at least one processor; a memory coupled to the at least one processor; and instructions stored in the memory and executable by the at least one processor to cause the apparatus to perform a method as described in any of aspects 1 to 8.

[0296] Aspect 50: An apparatus for wireless communication in a UE, comprising at least one means for performing a method as described in any of aspects 1 to 8.

[0297] Aspect 51: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code including instructions executable by at least one processor to perform a method as described in any of aspects 1 to 8.

[0298] Aspect 52: An apparatus for wireless communication in a network entity, comprising: at least one processor; a memory coupled to the at least one processor; and instructions stored in the memory and executable by the at least one processor to cause the apparatus to perform a method as described in any of aspects 9 to 16.

[0299] Aspect 53: An apparatus for wireless communication in a network entity, comprising at least one means for performing the method recited in any of aspects 9 to 16.

[0300] Aspect 54: A non-transitory computer-readable medium storing code for wireless communication in a network entity, the code including instructions executable by at least one processor to perform a method as described in any of aspects 9 to 16.

[0301] Aspect 55: An apparatus for wireless communication in a UE, comprising: at least one processor; a memory coupled to the at least one processor; and instructions stored in the memory and executable by the at least one processor to cause the apparatus to perform a method as described in any of aspects 17 to 31.

[0302] Aspect 56: An apparatus for wireless communication in a UE, comprising at least one means for performing the method described in any of aspects 17 to 31.

[0303] Aspect 57: A non-transitory computer-readable medium storing code for wireless communication in a UE, the code including instructions executable by at least one processor to perform a method as described in any of aspects 17 to 31.

[0304] Aspect 58: An apparatus for wireless communication in a network entity, comprising: at least one processor; a memory coupled to the at least one processor; and instructions stored in the memory and executable by the at least one processor to cause the apparatus to perform a method as described in any of aspects 32 to 48.

[0305] Aspect 59: An apparatus for wireless communication in a network entity, comprising at least one means for performing the method recited in any of aspects 32 to 48.

[0306] Aspect 60: A non-transitory computer-readable medium storing code for wireless communication in a network entity, the code including instructions executable by at least one processor to perform a method as described in any of aspects 32 to 48.

[0307] It should be noted that the methods described herein are descriptions of possible implementations, that the acts and steps may be rearranged or otherwise modified, and that other implementations are possible. Additionally, aspects from two or more of these methods may be combined.

[0308] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described as examples and LTE, LTE-A, LTE-A Pro, or NR terminology may be used throughout much of the description, the techniques described herein may be applicable to other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies, including future systems and radio technologies not expressly mentioned herein.

[0309] The information and signals described herein may be represented using any of a wide variety of technologies and techniques. For example, the data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0310] The various example blocks and components described with respect to the present disclosure herein may be implemented or performed using a general purpose processor, a DSP, an ASIC, a CPU, a GPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but alternatively, the processor may be any processor, controller, microcontroller, or state machine. At least one processor may be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0311] The functions described herein may be implemented in hardware, software executed by at least one processor, or any combination thereof. Software should be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, and the like, whether termed software, firmware, middleware, microcode, hardware description language, or otherwise. When implemented in software executed by at least one processor, the functions may be stored on or transmitted over a computer-readable medium as one or more instructions or code. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by at least one processor, hardware, hardwiring, or any combination thereof. Features that perform functions may also be physically located in various locations, including being distributed such that parts of the functions are executed at different physical locations.

[0312] Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates transfer of a computer program from one place to another. Non-transitory storage media may be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, Electrically Erasable Programmable ROM (EEPROM), Flash memory, phase-change memory, Compact Disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general purpose or special purpose computer or a general purpose or special purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer readable media. As used herein, disk and disc include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically and discs reproduce data optically using lasers. Combinations of the above are also included within the scope of computer readable media.

[0313] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such as, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (e.g., A and B and C). Also, the phrase "based on" as used herein should not be construed as a reference to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" is to be interpreted in the same way as the phrase "based at least in part on". As used herein, the term "and / or", when used in a list of two or more items, means that any one of the listed items may be employed alone, or any combination of two or more of the listed items may be employed. For example, if a composition is described as containing components A, B, and / or C, the composition may contain only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, or a combination of A, B, and C.

[0314] The terms "determine" or "determining" encompass various actions, and thus "determining" can include calculating, computing, processing, deriving, investigating, looking up (such as via a lookup in a table, database, or another data structure), or ascertaining. "Determining" can also include receiving (such as receiving information) or accessing (such as accessing data in a memory). "Determining" can also include resolving, obtaining, selecting, choosing, establishing, and other similar acts.

[0315] In the accompanying figures, similar components or features may have the same reference label. Furthermore, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes between the similar components. If only a first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of the second reference label, or other subsequent reference labels.

[0316] The description set forth herein with respect to the accompanying drawings describes exemplary configurations and does not necessarily represent all examples that may be implemented or fall within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration" and does not mean "preferred" or "advantageous over other examples." The detailed description includes specific details for the purposes of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0317] The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications of the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. 1. A method for wireless communication in a user equipment (UE), comprising: receiving, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for transmission of a random access message in a first uplink bandwidth portion; transmitting a random access message over the first set of resources according to the system information; receiving a random access response indicating a second set of resources different from the first set of resources; sending a retransmission of the random access message over the second set of resources according to the random access response; and A method comprising:

2. Receiving the random access response comprises:

2. The method of claim 1, further comprising receiving the random access response indicating a second set of resources and a duration during which the second set of resources are available for retransmission of a random access message.

3. Receiving the random access response comprises:

2. The method of claim 1, comprising receiving the random access response indicating a second set of resources that are multiplexed with the first set of resources in a time domain, a frequency domain, a spatial domain, or a combination thereof.

4. Receiving the random access response comprises:

2. The method of claim 1, comprising receiving the random access response indicating the second set of resources in the first uplink bandwidth portion or in a second uplink bandwidth portion different from the first uplink bandwidth portion.

5. Receiving the random access response comprises:

2. The method of claim 1, further comprising receiving the random access response indicating the second set of resources and a random access signature comprising one or more of a random access preamble identifier, a UE identifier, or a temporary identifier associated with a random access resource, and wherein sending the retransmission of the random access message is based at least in part on comparing the random access signature from the random access response to a random access signature associated with the random access message.

6. Receiving the random access response comprises:

2. The method of claim 1, further comprising receiving the random access response indicating a random access resource pool comprising the second set of resources, wherein sending the retransmission of the random access message over the second set of resources is based at least in part on selecting the second set of resources from the random access resource pool.

7. receiving a multicast or broadcast downlink control channel transmission indicating one or more resources assigned for reception of the random access response, the multicast or broadcast downlink control channel transmission comprising group common downlink control information; monitoring the one or more resources for the random access response in accordance with the multicast or broadcast downlink control channel transmission, wherein the random access response is scrambled using a group identifier; and The method of claim 1 further comprising:

8. Transmitting the retransmission of the random access message comprises:

2. The method of claim 1, comprising transmitting the retransmission of the random access message over the second set of resources according to a power ramping scheme, a beam switching scheme, an antenna switching scheme, a bandwidth portion switching scheme, a carrier switching scheme, a random backoff scheme, a frequency hopping scheme, a coverage extension scheme, or a combination thereof.

9. 1. A method for wireless communication in a network entity, comprising: transmitting, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for reception of a random access message in a first uplink bandwidth portion; monitoring the first set of resources for a random access message according to the system information; transmitting a random access response based at least in part on monitoring the first set of resources, the random access response indicating a second set of resources different from the first set of resources; monitoring the second set of resources for retransmission of the random access message according to the random access response; A method comprising:

10. Transmitting the random access response comprises:

10. The method of claim 9, further comprising transmitting the random access response indicating a second set of resources and a duration during which the second set of resources are available for retransmission of a random access message.

11. Transmitting the random access response comprises:

10. The method of claim 9, comprising transmitting the random access response indicating a second set of resources that are multiplexed with the first set of resources in a time domain, a frequency domain, a spatial domain, or a combination thereof.

12. Transmitting the random access response comprises:

10. The method of claim 9, comprising transmitting the random access response indicating the second set of resources in the first uplink bandwidth portion or in a second uplink bandwidth portion different from the first uplink bandwidth portion.

13. Transmitting the random access response comprises:

10. The method of claim 9, comprising transmitting the random access response indicating the second set of resources and a random access signature comprising one or more of a random access preamble identifier, a user equipment (UE) identifier, or a temporary identifier associated with the random access resources.

14. Transmitting the random access response comprises:

10. The method of claim 9, further comprising transmitting the random access response indicating a random access resource pool comprising the second set of resources.

15. transmitting a multicast or broadcast downlink control channel transmission indicating one or more resources assigned for transmission of the random access response, the multicast or broadcast downlink control channel transmission comprising group common downlink control information; transmitting the random access response over the one or more resources in accordance with the multicast or broadcast downlink control channel transmission, the random access response being scrambled using a group identifier; and The method of claim 9 further comprising:

16. 10. The method of claim 9, further comprising receiving the retransmission of the random access message over the second set of resources according to a power ramping scheme, a beam switching scheme, an antenna switching scheme, a bandwidth portion switching scheme, a carrier switching scheme, a random backoff scheme, a frequency hopping scheme, a coverage extension scheme, or a combination thereof.

17. 1. A method for wireless communication in a user equipment (UE), comprising: receiving system information indicating a first set of resources for requesting on-demand signaling in a first downlink bandwidth portion; transmitting a request for the on-demand signaling over the first set of resources in a first uplink bandwidth portion; receiving an indication of a second set of resources allocated for reception of the on-demand signaling; and monitoring the second set of resources for the on-demand signaling in accordance with the instructions; and A method comprising:

18. Receiving the system information includes:

20. The method of claim 17, comprising receiving the system information indicating one or both of the first set of resources or the second set of resources in the first downlink bandwidth portion.

19. Receiving the indication of the second set of resources includes:

20. The method of claim 17, comprising receiving a random access response indicating an activation status of the second set of resources, or an availability of the second set of resources, or both.

20. Sending the request comprises:

20. The method of claim 17, comprising transmitting a random access message comprising the request for the on-demand signaling over the first set of resources.

21. 20. The method of claim 17, further comprising receiving, over the second set of resources, the on-demand signaling comprising a system information block, a synchronization signal block, a set of reference signals, a broadcast channel transmission, timing information associated with the on-demand signaling, or a combination thereof.

22. 18. The method of claim 17, further comprising receiving the on-demand signaling over the second set of resources indicating a set of uplink resources, a set of downlink resources, a set of measurement objects, a set of random access resources allocated for retransmission of a random access message, or a combination thereof.

23. The on-demand signaling indicates the set of random access resources, and the method further comprises:

23. The method of claim 22, further comprising: transmitting a retransmission of a random access message over the set of random access resources indicated by the on-demand signaling.

24. 20. The method of claim 17, further comprising receiving multiple repetitions of the on-demand signaling over the second set of resources.

25. 20. The method of claim 17, further comprising receiving the on-demand signaling in the first downlink bandwidth portion or in a second downlink bandwidth portion different from the first downlink bandwidth portion.

26. Receiving the indication of the second set of resources includes:

18. The method of claim 17, comprising receiving the indication of radio resource mapping between the second set of resources and the on-demand signaling, the radio resource mapping being associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof.

27. 27. The method of claim 26, wherein the radio resource mapping indicates one or more of a synchronization raster, a channel raster, or a repetition pattern associated with the capability of the UE, the service type of the UE, the link quality of the UE, or a combination thereof.

28. 20. The method of claim 17, further comprising performing one or more of a bandwidth portion switching procedure, a carrier switching procedure, a beam switching procedure, an antenna switching procedure, a random backoff procedure, a frequency hopping procedure, or a coverage extension procedure based at least in part on receiving the on-demand signaling over the second set of resources.

29. 20. The method of claim 17, further comprising receiving an indication that the on-demand signaling, the second set of resources, or both, are specific to a capability of the UE, a service type of the UE, a coverage level of the UE, a link quality of the UE, a contention resolution status of the UE, or a combination thereof.

30. Receiving the system information includes:

18. The method of claim 17, comprising receiving the system information indicating a first set of resources for requesting the on-demand signaling, the first set of resources comprising dedicated resources associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof.

31. Receiving the indication of the second set of resources includes:

20. The method of claim 17, comprising receiving a paging message on a paging occasion associated with a capability of the UE, a service type of the UE, a link quality of the UE, or a combination thereof, the paging message comprising the indication of the second set of resources.

32. 1. A method for wireless communication in a network entity, comprising: transmitting system information indicating a first set of resources for requesting transmission of on-demand signaling in a first downlink bandwidth portion; receiving a request for the on-demand signaling over the first set of resources in a first uplink bandwidth portion; transmitting an indication of a second set of resources allocated for transmission of the on-demand signaling; and transmitting the on-demand signaling over the second set of resources in accordance with the instructions; and A method comprising:

33. Transmitting the system information 33. The method of claim 32, comprising transmitting the system information indicating one or both of the first set of resources or the second set of resources in the first downlink bandwidth portion.

34. Transmitting the indication of the second set of resources comprises:

33. The method of claim 32, comprising transmitting a random access response indicating an activation status of the second set of resources, an availability of the second set of resources, or both.

35. Receiving the request comprises:

33. The method of claim 32, comprising receiving a random access message comprising the request for the on-demand signaling over the first set of resources.

36. Transmitting the on-demand signaling comprises:

33. The method of claim 32, further comprising transmitting the on-demand signaling comprising a system information block, a synchronization signal block, a set of reference signals, a broadcast channel transmission, timing information associated with the on-demand signaling, or a combination thereof over the second set of resources.

37. Transmitting the on-demand signaling comprises:

33. The method of claim 32, further comprising transmitting the on-demand signaling over the second set of resources indicating a set of uplink resources, a set of downlink resources, a set of measurement objects, a set of random access resources allocated for receiving a random access message, or a combination thereof.

38. The on-demand signaling indicates the set of random access resources, and the method further comprises:

38. The method of claim 37, further comprising receiving a retransmission of a random access message over the set of random access resources indicated by the on-demand signaling.

39. Transmitting the on-demand signaling comprises:

33. The method of claim 32, further comprising transmitting multiple repetitions of the on-demand signaling over the second set of resources.

40. Transmitting the on-demand signaling comprises:

33. The method of claim 32, comprising transmitting the on-demand signaling in a second downlink bandwidth portion different from the first downlink bandwidth portion associated with transmitting the system information.

41. Transmitting the on-demand signaling comprises:

33. The method of claim 32, comprising transmitting the on-demand signaling in the first downlink bandwidth portion associated with transmission of the system information.

42. Transmitting the indication of the second set of resources comprises:

33. The method of claim 32, comprising transmitting the indication of radio resource mapping between the second set of resources and the on-demand signaling, the radio resource mapping being associated with a user equipment (UE) capability, a service type, a link quality, or a combination thereof.

43. 43. The method of claim 42, wherein the radio resource mapping indicates one or more of a synchronization raster, a channel raster, or a repetition pattern associated with UE capability, the service type, the link quality, or a combination thereof.

44. Transmitting the on-demand signaling comprises:

33. The method of claim 32, comprising transmitting the on-demand signaling comprising instructions to perform a bandwidth portion switching procedure, a carrier switching procedure, a beam switching procedure, an antenna switching procedure, a random backoff procedure, a frequency hopping procedure, or a coverage extension procedure.

45. 33. The method of claim 32, further comprising sending an indication that the on-demand signaling, the second set of resources, or both, are specific to a UE capability, a service type, a coverage level, a link quality, a contention resolution status, or a combination thereof.

46. Transmitting the system information 33. The method of claim 32, comprising transmitting the system information indicating a first set of resources for requesting the on-demand signaling, the first set of resources comprising dedicated resources associated with a user equipment (UE) capability, a service type, a link quality, or a combination thereof.

47. Transmitting the indication of the second set of resources comprises:

33. The method of claim 32, comprising transmitting a paging message on a paging occasion associated with a UE capability, a service type, a link quality, or a combination thereof, the paging message comprising the indication of the second set of resources.

48. identifying the request for the on-demand signaling based at least in part on monitoring an energy level associated with the first set of resources; determining that the request corresponds to a user equipment (UE) capability, a service type, a link quality, a contention resolution status, a coverage level, or a combination thereof; 33. The method of claim 32, further comprising:

49. An apparatus for wireless communication in a user equipment (UE), comprising: At least one processor; a memory coupled to the at least one processor; and instructions stored in the memory, the instructions causing the device to: receiving, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for transmission of a random access message in a first uplink bandwidth portion; transmitting a random access message over the first set of resources according to the system information; receiving a random access response indicating a second set of resources different from the first set of resources; sending a retransmission of the random access message over the second set of resources according to the random access response; and 23. The apparatus of claim 22, wherein the at least one processor is operable to cause the at least one processor to perform the steps of:

50. An apparatus for wireless communication in a network entity, comprising: At least one processor; a memory coupled to the at least one processor; and instructions stored in the memory, the instructions causing the device to: transmitting, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for reception of a random access message in a first uplink bandwidth portion; monitoring the first set of resources for a random access message according to the system information; transmitting a random access response based at least in part on monitoring the first set of resources, the random access response indicating a second set of resources different from the first set of resources; monitoring the second set of resources for retransmission of the random access message according to the random access response; 23. The apparatus of claim 22, wherein the at least one processor is operable to cause the at least one processor to perform the steps of:

51. An apparatus for wireless communication in a user equipment (UE), comprising: At least one processor; a memory coupled to the at least one processor; and instructions stored in the memory, the instructions causing the device to: receiving system information indicating a first set of resources for requesting on-demand signaling in a first downlink bandwidth portion; transmitting a request for the on-demand signaling over the first set of resources in a first uplink bandwidth portion; receiving an indication of a second set of resources allocated for reception of the on-demand signaling; and monitoring the second set of resources for the on-demand signaling in accordance with the instructions; and 23. The apparatus of claim 22, wherein the at least one processor is operable to cause the at least one processor to perform the steps of:

52. An apparatus for wireless communication in a network entity, comprising: At least one processor; a memory coupled to the at least one processor; and instructions stored in the memory, the instructions causing the device to: transmitting system information indicating a first set of resources for requesting transmission of on-demand signaling in a first downlink bandwidth portion; receiving a request for the on-demand signaling over the first set of resources in a first uplink bandwidth portion; transmitting an indication of a second set of resources allocated for transmission of the on-demand signaling; and transmitting the on-demand signaling over the second set of resources in accordance with the instructions; and 23. The apparatus of claim 22, wherein the at least one processor is operable to cause the at least one processor to perform the steps of:

53. An apparatus for wireless communication in a user equipment (UE), comprising: means for receiving, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for transmission of a random access message in a first uplink bandwidth portion; means for transmitting a random access message over the first set of resources in accordance with the system information; means for receiving a random access response indicating a second set of resources different from the first set of resources; means for transmitting a retransmission of the random access message over the second set of resources according to the random access response; 13. An apparatus comprising:

54. An apparatus for wireless communication in a network entity, comprising: means for transmitting, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for reception of a random access message in a first uplink bandwidth portion; means for monitoring the first set of resources for a random access message according to the system information; means for transmitting a random access response based at least in part on monitoring the first set of resources, the random access response indicating a second set of resources different from the first set of resources; means for monitoring the second set of resources for retransmission of the random access message according to the random access response; 13. An apparatus comprising:

55. An apparatus for wireless communication in a user equipment (UE), comprising: means for receiving system information indicating a first set of resources for requesting on-demand signaling in a first downlink bandwidth portion; means for transmitting a request for the on-demand signaling over the first set of resources in a first uplink bandwidth portion; means for receiving an indication of a second set of resources allocated for reception of the on-demand signaling; means for monitoring the second set of resources for the on-demand signaling in accordance with the instructions; 13. An apparatus comprising:

56. An apparatus for wireless communication in a network entity, comprising: means for transmitting system information indicating a first set of resources for requesting transmission of on-demand signaling in a first downlink bandwidth portion; means for receiving a request for the on-demand signaling over the first set of resources in a first uplink bandwidth portion; means for transmitting an indication of a second set of resources allocated for transmission of the on-demand signaling; means for transmitting the on-demand signaling over the second set of resources in accordance with the instructions; 13. An apparatus comprising:

57. 1. A non-transitory computer readable medium storing code for wireless communication in a user equipment (UE), the code comprising: receiving, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for transmission of a random access message in a first uplink bandwidth portion; transmitting a random access message over the first set of resources according to the system information; receiving a random access response indicating a second set of resources different from the first set of resources; sending a retransmission of the random access message over the second set of resources according to the random access response; and 16. A non-transitory computer-readable medium comprising instructions executable by at least one processor to perform the steps of:

58. 1. A non-transitory computer readable medium storing code for wireless communication in a network entity, the code comprising: transmitting, in a first downlink bandwidth portion, system information indicating a first set of resources allocated for reception of a random access message in a first uplink bandwidth portion; monitoring the first set of resources for a random access message according to the system information; transmitting a random access response based at least in part on monitoring the first set of resources, the random access response indicating a second set of resources different from the first set of resources; monitoring the second set of resources for retransmission of the random access message according to the random access response; 16. A non-transitory computer-readable medium comprising instructions executable by at least one processor to perform the steps of:

59. 1. A non-transitory computer readable medium storing code for wireless communication in a user equipment (UE), the code comprising: receiving system information indicating a first set of resources for requesting on-demand signaling in a first downlink bandwidth portion; transmitting a request for the on-demand signaling over the first set of resources in a first uplink bandwidth portion; receiving an indication of a second set of resources allocated for reception of the on-demand signaling; and monitoring the second set of resources for the on-demand signaling in accordance with the instructions; and 16. A non-transitory computer-readable medium comprising instructions executable by at least one processor to perform the steps of:

60. 1. A non-transitory computer readable medium storing code for wireless communication in a network entity, the code comprising: transmitting system information indicating a first set of resources for requesting transmission of on-demand signaling in a first downlink bandwidth portion; receiving a request for the on-demand signaling over the first set of resources in a first uplink bandwidth portion; transmitting an indication of a second set of resources allocated for transmission of the on-demand signaling; and transmitting the on-demand signaling over the second set of resources in accordance with the instructions; and 16. A non-transitory computer-readable medium comprising instructions executable by at least one processor to perform the steps of:

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