Patent Description:
<CIT> discloses a method in a UE, comprising: receiving, from a network node, a request to configure a first component carrier at the UE for dual connectivity operation; determining whether a total number of currently configured component carriers including the first component carrier associated with the request exceeds a threshold number of component carriers that the UE can use for dual connectivity operation; and performing one or more component carrier related radio operations based at least in part on the determination of whether the total number of currently configured component carriers including the first component carrier associated with the request exceeds the threshold number of component carriers that the UE can use for dual connectivity operation.

In some aspects, a method of wireless communication performed by a first base station, BS, is comprising: receiving, from a user equipment, UE, information that indicates one or more overheating assistance parameters and a maximum quantity of component carriers, combined between the first BS and a second BS, for the UE;
transmitting, to the second BS and based at least in part on receiving the information, a request to reduce a quantity of component carriers of the second BS configured for the UE such that a total quantity of component carriers, combined between the first BS and the second BS, configurable for the UE satisfies the maximum quantity of component carriers; and transmitting to the second BS, an indication of one or more of the one or more overheating assistance parameters, wherein the one or more overheating assistance parameters include at least one of:a maximum New Radio, NR, frequency range <NUM>, FR1, bandwidth for the UE,a maximum NR frequency range <NUM>, FR2, bandwidth for the UE,a maximum quantity of FR1 multiple input multiple output, MIMO, layers for the UE, ora maximum quantity of FR2 MIMO layers for the UE.

In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a first BS, may cause the one or more processors to receive, from a UE, information that indicates one or more overheating assistance parameters and a maximum quantity of component carriers, combined between the first BS and a second BS, for the UE; transmit , to the second BS and based at least in part on receiving the information, a request to reduce a quantity of component carriers of the second BS configured for the UE such that a total quantity of component carriers, combined between the first BS and the second BS, configurable for the UE satisfies the maximum quantity of component carriers; and transmit, to the second BS, an indication of one or more of the one or more overheating assistance parameters,wherein the one or more overheating assistance parameters include at least one of:a maximum New Radio, NR, frequency range <NUM>, FR1, bandwidth for the UE,a maximum NR frequency range <NUM>, FR2, bandwidth for the UE,a maximum quantity of FR1 multiple input multiple output, MIMO, layers for the UE, ora maximum quantity of FR2 MIMO layers for the UE.

In some aspects, a first apparatus for wireless communication may include means for receiving, from a user equipment, UE, information that indicates one or more overheating assistance parameters and a maximum quantity of component carriers, combined between the first apparatus and a second apparatus, for the UE; means for transmitting, to the second apparatus and based at least in part on receiving the information, a request to reduce a quantity of component carriers of the second apparatus configured for the UE such that a total quantity of component carriers, combined between the first apparatus and the second apparatus, configurable for the UE satisfies the maximum quantity of component carriers; and means for transmitting, to the second BS, an indication of one or more of the one or more overheating assistance parameters, wherein the one or more overheating assistance parameters include at least one of:a maximum New Radio, NR, frequency range <NUM>, FR1, bandwidth for the UE,a maximum NR frequency range <NUM>, FR2, bandwidth for the UE,a maximum quantity of FR1 multiple input multiple output, MIMO, layers for the UE, ora maximum quantity of FR2 MIMO layers for the UE.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the accompanying drawings and specification.

It should be noted that while aspects may be described herein using terminology commonly associated with <NUM> and/or <NUM> wireless technologies, aspects of the present disclosure can be applied in other generation-based communication systems, such as fifth generation (<NUM>) and later, including New Radio (NR) technologies.

Controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform one or more techniques associated with coordinating overheating assistance information in a dual connectivity configuration, as described in more detail elsewhere herein. For example, controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform or direct operations of, for example, process <NUM> of <FIG> and/or other processes as described herein. Memories <NUM> and <NUM> may store data and program codes for base station <NUM> and UE <NUM>, respectively. In some aspects, memory <NUM> and/or memory <NUM> may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of the base station <NUM> and/or the UE <NUM>, may perform or direct operations of, for example, process <NUM> of <FIG> and/or other processes as described herein.

In some aspects, a first BS <NUM> may include means for receiving, from a UE <NUM>, an overheating assistance information communication that indicates a maximum quantity of component carriers, combined between the first BS <NUM> and a second BS <NUM>, for the UE <NUM>, means for transmitting, to the second BS <NUM> and based at least in part on receiving the overheating assistance information communication, a request to reduce a quantity of component carriers of the second BS <NUM> configured for the UE <NUM> such that a total quantity of component carriers, between the first BS <NUM> and the second BS <NUM>, configured for the UE <NUM> satisfies the maximum quantity of component carriers, and/or the like. In some aspects, such means may include one or more components of base station <NUM> described in connection with <FIG>, such as antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, and/or the like.

A UE may experience overheating due to high rates of data transfer to the UE, due to the bandwidth of the frequency spectrum used by the UE, due to the quantity of layers activated for the UE, and/or due to other factors. The UE may include a processor that executes an overheating manager application, which may monitor the operating temperature of various components of the UE. The overheating manager application may detect overheating conditions, such as when a monitored operating temperature exceeds a temperature threshold. In some cases, <NUM> NR networks operate at higher throughput, an increased quantity of layers, an increased frequency spectrum range, and/or the like relative to LTE networks. As a result, <NUM> NR capable UEs may be more prone to experiencing overheating conditions, which can degrade user experience of the UE, physically damage the UE, and/or the like.

A UE and a BS may mitigate the effects of an overheating condition by reducing various communication parameters of the UE, such as reducing the peak or maximum permitted throughput for the UE, reducing the maximum number of component carriers that are permitted to be configured for the UE, and/or the like. Reducing these and other parameters may reduce the processing burden of the UE, which can reduce operating temperatures of the UE to mitigate the overheating condition.

In some cases, a UE may operate in a dual connectivity configuration in a wireless network. In these cases, the UE may be communicatively connected with, and may receive communications from, two or more BSs. The BSs may support the same RAT or different RATs. In cases where the BSs support different RATs (e.g., a first BS may support an LTE RAT and a second BS may support a <NUM> NR RAT), different sets of operating assistance parameters may be used for the different RATs. However, the BSs in the dual connectivity deployment may be unable to coordinate the different sets of operating assistance parameters between the BSs for the UE, which may result in inefficient or degraded overheating mitigation for the UE.

Some aspects described herein provide techniques and apparatuses for coordinating overheating assistance information in a dual connectivity configuration. In some aspects described herein, BSs in a dual connectivity configuration may share operating assistance parameters for different types of RATs. For example, an LTE BS may receive a set of LTE operating assistance parameters and a set of <NUM> NR operating assistance parameters from a UE, and may transmit an indication of the set of LTE operating assistance parameters and the set of <NUM> NR operating assistance parameters to a <NUM> NR BS in a dual connectivity configuration with the LTE BS and the UE. This permits the BSs in the dual connectivity configuration to jointly coordinate operating assistance parameters for the UE, which increases the efficiency and performance of overheating mitigation for the UE.

Moreover, in some aspects described herein, some operating assistance parameters may be jointly configured across BSs (e.g., a first BS and a second BS) in a dual connectivity configuration, regardless of whether the BSs are the same RAT or are different RATs. For example, a reducedMaxCCs parameter may be jointly configured for the BSs in a dual connectivity configuration. In these cases, the reducedMaxCCs parameter may indicate a maximum quantity of component carriers, combined between the BSs, that is permitted to be configured or active for a UE. In this way, the BSs may jointly reduce the total quantity of component carriers configured for the UE by deactivating component carriers of the first BS and/or the second BS, by releasing secondary cells (SCells) of the first BS and/or the second BS, and/or the like.

The aspects described herein may be adapted for use in various types of dual connectivity configurations, including an Evolved-Universal Mobile Telecommunications System Terrestrial Radio Access Network (E-UTRAN) NR Dual Connectivity (EN-DC) configuration (where a UE is communicatively connected to an LTE master node (MN) BS and a <NUM> NR secondary node (SN) BS, and the core network is an LTE evolved packet core), a next generation RAN (NG-RAN) E-UTRA Dual Connectivity (NGEN-DC) configuration (where a UE is communicatively connected to an LTE MN BS and a <NUM> NR SN BS, and the core network is a <NUM> core), an NR E-UTRA Dual Connectivity (NE-DC) configuration (where a UE is communicatively connected to a <NUM> NR MN BS and an LTE SN BS, and the core network is a <NUM> core), an NR Dual Connectivity (NR-DC) configuration (where a UE is communicatively connected to a <NUM> NR MN BS and a <NUM> NR SN BS, and the core network is a <NUM> core), and/or the like. The aspects described herein may also be adapted for use in multi-connectivity configurations, in which a UE is communicatively connected with more than two BSs.

<FIG> is a diagram illustrating an example <NUM> of coordinating overheating assistance information in a dual connectivity configuration, in accordance with various aspects of the present disclosure. As shown in <FIG>, example <NUM> may include communication between a UE (e.g., UE <NUM>) and a plurality of BSs (e.g., BSs <NUM>). In some aspects, the UE and the BSs (e.g., BS1 and BS2) may be included in a wireless network, such as wireless network <NUM>. In some aspects, the UE and the plurality of BSs may operate in a dual connectivity configuration, such as a dual connectivity configuration described above. In some aspects, example <NUM> may include a greater quantity of BSs, in which case the UE and the plurality of BSs may operate in a multi-connectivity configuration.

In some aspects, a processor of the UE (e.g., receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, and/or the like) may execute an overheating manager application, which may monitor the operating temperatures of various components of the UE. The overheating manager application may detect overheating conditions, such as when a monitored operating temperature exceeds a temperature threshold.

As shown in <FIG>, and by reference number <NUM>, the UE transmits an overheating assistance information communication to BS1. In some aspects, the UE may transmit the overheating assistance information communication to BS1 based at least in part on detecting an overheating condition of the UE (e.g., based at least in part on the overheating manager application detecting a monitored operating temperature exceeded a temperature threshold). In some aspects, BS1 may be an MN in the dual connectivity configuration.

The overheating assistance information communication indicates one or more overheating assistance parameters for the UE. Each of the one or more overheating assistance parameters may be associated with BS1 and/or BS2 (which may be an SN in the dual connectivity configuration). In some aspects, the one or more overheating assistance parameters may include RAT-specific parameters, such as <NUM> NR specific parameters, LTE specific parameters, and/or the like. RAT-specific parameters may include overheating assistance parameters that are configured and processed separately for BSs of a particular RAT type. For example, if BS1 is an LTE BS, and BS2 is a <NUM> NR BS, the RAT-specific parameters may include a set of LTE overheating assistance parameters for BS1 and a set of <NUM> NR overheating assistance parameters for BS2.

Examples of RAT-specific parameters may include an LTE reducedUE-Category parameter (which may indicate a reduced maximum throughput for the UE relative to the maximum throughput permitted for the UE at the time the overheating assistance communication is transmitted), a <NUM> NR reducedUE-Category parameter, a <NUM> NR reducedMaxBW-FR1 parameter (which may indicate a reduced maximum NR frequency range <NUM> (FR1) bandwidth for the UE relative to the maximum NR FR1 bandwidth permitted for the UE at the time the overheating assistance communication is transmitted), a <NUM> NR reducedMaxBW-FR2 parameter (which may indicate a reduced maximum NR frequency range <NUM> (FR2) bandwidth for the UE relative to the maximum NR FR2 bandwidth permitted for the UE at the time the overheating assistance communication is transmitted), a <NUM> NR reducedMaxMIMO-LayersFR1 (which may indicate a reduced maximum quantity of FR1 MIMO layers for the UE relative to the maximum quantity of FR1 MIMO layers permitted for the UE at the time the overheating assistance communication is transmitted), a <NUM> NR reducedMaxMIMO-LayersFR2 (which may indicate a reduced maximum quantity of FR2 MIMO layers for the UE relative to the maximum quantity of FR2 MIMO layers permitted for the UE at the time the overheating assistance communication is transmitted), and/or the like.

In some aspects, the RAT-specific parameters may further be specific to an uplink or to a downlink. For example, the RAT-specific parameters may include an uplink LTE reducedUE-Category (reducedUE-CategoryUL) and a downlink LTE reducedUE-Category (reducedUE-CategoryDL), an uplink <NUM> NR reducedUE-Category (reducedUE-CategoryUL) and a downlink <NUM> NR reducedUE-Category (reducedUE-CategoryDL), an uplink <NUM> NR reducedBW-FR1 (reducedBW-FR1-UL) and a downlink <NUM> NR reducedBW-FR1 (reducedBW-FR1-DL), an uplink <NUM> NR reducedBW-FR2 (reducedBW-FR2-UL) and a downlink <NUM> NR reducedBW-FR2 (reducedBW-FR2-DL), an uplink <NUM> NR reducedMIMO-LayersFR1 (reducedMIMO-LayersFR1-UL) and a downlink <NUM> NR reducedMIMO-LayersFR1 (reducedMIMO-LayersFR1-DL), an uplink <NUM> NR reducedMIMO-LayersFR2 (reducedMIMO-LayersFR2-UL) and a downlink <NUM> NR reducedMIMO-LayersFR2 (reducedMIMO-LayersFR2-DL), and/or the like.

In some aspects, the one or more overheating assistance parameters may include one or more shared, combined, and/or jointly coordinated parameters. For example, the one or more overheating assistance parameters may include a reducedMaxCCs parameter, which may indicate a reduced maximum quantity of component carriers, combined between BS1 and BS2, that is permitted to be configured or active for the UE (e.g., relative to the maximum quantity of component carriers permitted for the UE at the time that the overheating assistance information communication is transmitted). The combination of the quantity of component carriers of BS1 configured or active for the UE, and the quantity of component carriers of BS2 configured or active for the UE, is to satisfy the reduced maximum quantity of component carriers indicated by the reducedMaxCCs parameter.

In some aspects, the reducedMaxCCs parameter may include an uplink component (e.g., reducedMaxCCs-UL) and a downlink component (e.g., reducedMaxCCs-DL). The uplink component may indicate a reduced maximum quantity of uplink component carriers, combined between BS1 and BS2, that is permitted to be configured or active for the UE, and the downlink component may indicate a reduced maximum quantity of downlink component carriers, combined between BS1 and BS2, that is permitted to be configured or active for the UE.

As further shown in <FIG>, and by reference number <NUM>, BS1 may transmit a request to reduce the quantity of component carriers of BS2 configured or active for the UE. In some aspects, the request may indicate that BS2 is to reduce the overall quantity of component carriers configured or active for the UE. In some aspects, the request may specify that BS2 is to reduce the quantity of downlink component carriers and/or the quantity of uplink component carriers configured or active for the UE.

In some aspects, BS1 may further transmit an indication of the one or more overheating assistance parameters to BS2. In some aspects, the indication may include all of the overheating assistance parameters included in the overheating assistance information communication. In some aspects, the indication may include a subset of the overheating assistance parameters included in the overheating assistance information communication. For example, BS1 may transmit an indication of the reducedMaxCCs parameter (or the reducedMaxCCs-UL and the reducedMaxCCs-DL parameters) as well as any overheating assistance information parameters specific to BS2 (e.g., which may include one or more RAT-specific parameters).

BS2 may receive the request from BS1 and may accept the request or reject the request. If BS2 rejects the request, BS2 may transmit a response to the request that may indicate the rejection and a proposed configuration for reducing the quantity of component carriers of BS2 (e.g., a proposed reduced quantity of (uplink and/or downlink) component carriers for BS2, a proposed specific set of component carriers to be deactivated, a proposed specific set of (uplink and/or downlink) SCells to be released for BS2, and/or the like). If BS1 agrees with the proposed configuration, BS1 may modify the request to include the proposed configuration and may retransmit the request to BS2. This negotiation may continue until BS1 and BS2 agree on a configuration for reducing the quantity of component carriers of BS2 configured for the UE.

As further shown in <FIG>, and by reference number <NUM>, BS2 may transmit an indication of acceptance of the request to BS1, and BS1 may receive the indication of the acceptance of the request. As shown by reference number <NUM>, BS1 may transmit a radio resource control (RRC) connection reconfiguration communication to the UE to cause the quantity of component carriers of BS2, configured for the UE, to be reduced to satisfy the reducedMaxCCs parameter of the UE. For example, BS2 and the UE may deactivate one or more uplink and/or downlink component carriers of BS2 for the UE, which may reduce the throughput and/or frequency bandwidth to be monitored and processed by the UE, which may reduce the operating temperatures of the UE.

In this way, BSs in a dual connectivity configuration may share operating assistance parameters for different types of RATs. This permits the BSs in the dual connectivity configuration to jointly coordinate operating assistance parameters, which increases the efficiency and performance of overheating mitigation for the UE.

<FIG> is a diagram illustrating an example <NUM> of coordinating overheating assistance information in a dual connectivity configuration, in accordance with various aspects of the present disclosure. As shown in <FIG>, example <NUM> may include communication between a UE (e.g., UE <NUM>) and a plurality of BSs (e.g., BSs <NUM>). In some aspects, the UE and the BSs (e.g., BS1 and BS2) may be included in a wireless network, such as wireless network <NUM>. In some aspects, the UE and the plurality of BSs may operate in a dual connectivity configuration, such as a dual connectivity configuration described above. BS1 may be an MN in the dual connectivity configuration, and BS2 may be an SN in the dual connectivity configuration. In some aspects, example <NUM> may include a greater quantity of BSs, in which case the UE and the plurality of BSs may operate in a multi-connectivity configuration.

In some aspects, a processor of the UE (e.g., receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, and/or the like) may execute an overheating manager application, which may monitor the operating temperature of various components of the UE. The overheating manager application may detect overheating conditions, such as when a monitored operating temperature exceeds a temperature threshold.

As shown in <FIG>, and by reference number <NUM>, the UE may transmit an overheating assistance information communication to BS1. In some aspects, the UE may transmit the overheating assistance information communication to BS1 based at least in part on detecting an overheating condition of the UE (e.g., based at least in part on the overheating manager application detecting a monitored operating temperature exceeded a temperature threshold). In some aspects, the overheating assistance information communication may include an indication of one or more overheating assistance parameters, such as one or more of the RAT-specific parameters and shared parameters described above in connection with <FIG>. In some aspects, the overheating assistance information communication may be an RRC UEAssistanceInformation communication.

As further shown in <FIG>, and by reference number <NUM>, BS1 may transmit an SN modification/addition request to BS2. The SN modification/addition request may function as a request to reduce the quantity of component carriers of BS2 configured or active for the UE. In some aspects, BS1 may transmit the SN modification/addition request via a backhaul between BS1 and BS2, such as an Xn interface backhaul, an X2 interface backhaul, and/or the like.

In some aspects, the SN modification/addition request may include one or more information elements (IEs), such as a CG-ConfigInfo IE. The CG-ConfigInfo IE may indicate which SCells that BS2 is to release to reduce the quantity of component carriers of BS2 configured or active for the UE. In this case, the indicated SCell(s) may be uplink SCell(s) and/or downlink SCell(s). In some aspects, each of the downlink SCell(s) may be indicated in an sCellToReleaseList IE included in the CG-ConfigInfo IE, and may be indicated by an associated SCell index. In some aspects, each of the uplink SCell(s) may be indicated in an sCellToReleaseList-UL IE included in the CG-ConfigInfo IE, and may be indicated by an associated SCell index.

As further shown in <FIG>, and by reference number <NUM>, BS2 may transmit an SN modification/addition response to BS1 based at least in part on receiving the SN modification/addition request. In some aspects, BS2 may transmit the SN modification/addition response to BS1 via the backhaul. In some aspects, the SN modification/addition response may include a CG-ConfigInfo IE indicating acceptance or rejection of the request.

As further shown in <FIG>, and by reference number <NUM>, if BS2 rejects the request, BS1 and BS2 may negotiate which SCells that BS2 is to release. For example, BS2 may include a proposed set of SCells to release in the CG-ConfigInfo IE of the SN modification/addition response. BS1 may receive the SN modification/addition response and may modify the request based at least in part on the proposed set of SCells. BS1 may retransmit the request to BS2 after modifying the request. In some aspects, BS1 may modify the request to include the proposed set of SCells or a different set of SCells. BS2 may receive the retransmitted request and may accept or reject the retransmitted request. BS1 and BS2 may continue to negotiate which SCells that BS2 is to release until BS1 and BS2 agree on which SCells that BS2 is to release.

As further shown in <FIG>, and by reference number <NUM>, BS1 may transmit an RRC connection reconfiguration communication to the UE. In some aspects, BS1 may transmit the RRC connection reconfiguration communication to the UE based at least in part on receiving, from BS2, an indication of an acceptance of the request. In some aspects, the RRC connection reconfiguration communication may indicate which SCells that BS2 is to release for the UE. In some aspects, the UE and the BS2 may release the agreed upon SCells of BS2 based at least in part on the RRC connection reconfiguration.

In some aspects, the SN modification/addition request may include one or more IEs, such as a CG-ConfigInfo IE. The CG-ConfigInfo IE may indicate an assigned quantity of component carriers of BS2 for the UE. BS2 may release component carriers of BS2 for the UE to satisfy the assigned quantity of component carriers. In some aspects, the assigned quantity of component carriers may be indicated in a reducedMaxCCs_SN IE in the CG-ConfigInfo IE.

As further shown in <FIG>, and by reference number <NUM>, BS2 may transmit an SN modification/addition response to BS1 based at least in part on receiving the SN modification/addition request. In some aspects, BS2 may transmit the SN modification/addition acknowledge to BS1 via the backhaul. In some aspects, the SN modification/addition acknowledge may include a CG-ConfigInfo IE indicating acceptance or rejection of the request.

As further shown in <FIG>, and by reference number <NUM>, if BS2 rejects the request, BS1 and BS2 may negotiate the assigned quantity of component carriers. For example, BS2 may include a proposed assigned quantity of component carriers in the CG-ConfigInfo IE of the SN modification/addition acknowledgement. BS1 may receive the SN modification/addition acknowledgement and may modify the request based at least in part on the proposed assigned quantity of component carriers. BS1 may retransmit the request to BS2 after modifying the request. In some aspects, BS1 may modify the request to include the proposed assigned quantity of component carriers or a different assigned quantity of component carriers. BS2 may receive the retransmitted request and may accept or reject the retransmitted request. BS1 and BS2 may continue to negotiate the assigned quantity of component carriers of BS2 for the UE until BS1 and BS2 agree on the assigned quantity of component carriers.

As further shown in <FIG>, and by reference number <NUM>, BS1 may transmit an RRC connection reconfiguration communication to the UE. In some aspects, BS1 may transmit the RRC connection reconfiguration communication to the UE based at least in part on receiving, from BS2, an indication of an acceptance of the request. In some aspects, the RRC connection reconfiguration communication may indicate the assigned quantity of component carriers of BS2 for the UE. In some aspects, the UE and the BS2 may deactivate component carriers of BS2, based at least in part on the RRC connection reconfiguration, to satisfy the assigned quantity of component carriers of BS2 for the UE.

In some aspects, the UE may transmit an overheating assistance information communication to BS1. In some aspects, the UE may transmit the overheating assistance information communication to BS1 based at least in part on detecting an overheating condition of the UE (e.g., based at least in part on the overheating manager application detecting a monitored operating temperature exceeded a temperature threshold). In some aspects, the overheating assistance information communication may include an indication of one or more overheating assistance parameters, such as one or more of the RAT-specific parameters and shared parameters described above in connection with <FIG>. In some aspects, the overheating assistance information communication may be an RRC UEAssistanceInformation communication.

In some aspects, BS1 may cause BS2 to reduce the quantity of component carriers of BS2 for the UE to satisfy a maximum quantity of component carriers, combined between BS1 and BS2, that is permitted to be configured for the UE. In some aspects, BS1 may cause BS2 to reduce the quantity of component carriers of BS2 for the UE by transmitting an indication of an assigned quantity of component carriers of BS2 for the UE, as described above in connection with <FIG>. In some aspects, BS1 may cause BS2 to reduce the quantity of component carriers of BS2 for the UE by transmitting an indication to release one or more SCells of BS2 configured for the UE, as described above in connection with <FIG>.

As shown in <FIG>, and by reference number <NUM>, BS2 may initiate negotiation of an assigned quantity of component carriers of BS2 for the UE. In some aspects, BS2 may initiate the negotiation after accepting the assigned quantity of component carriers of BS2 for the UE or after accepting the one or more SCells to be released. In some aspects, BS2 may initiate the negotiation after identifying or determining a different quantity of component carriers (e.g., due to changing wireless network conditions, due to a change in configuration of BS2, and/or due to other factors) than the agreed upon assigned quantity of component carriers. In some aspects, BS2 may initiate the negotiation after identifying or determining a different quantity of component carriers than the component carriers associated with the agreed upon SCells to be released.

In some aspects, BS2 may initiate the negotiation by transmitting an SN modification/addition required to BS1. In some aspects, BS2 may transmit the SN modification/addition required via a backhaul between BS1 and BS2, such as an Xn interface backhaul, an X2 interface backhaul, and/or the like. In some aspects, the SN modification/addition required may include one or more IEs, such as a CG-Config IE. The CG-Config IE may indicate a proposed assigned quantity of component carriers of BS2 for the UE. In some aspects, the proposed assigned quantity of component carriers may be indicated in a reducedMaxCCs_SN IE in the CG-Config IE.

As further shown in <FIG>, and by reference number <NUM>, BS1 may receive the SN modification/addition required and may transmit an SN modification/addition request to BS2. In some aspects, BS1 may transmit the SN modification/addition request via a backhaul between BS1 and BS2.

In some aspects, the SN modification/addition request may include one or more IEs, such as a CG-ConfigInfo IE. The CG-ConfigInfo IE may indicate an assigned quantity of component carriers of BS2 for the UE. In some aspects, the assigned quantity of component carriers of the BS2 for the UE may be based at least in part on the proposed assigned quantity of component carriers indicated in the SN modification required. In some aspects, the assigned quantity of component carriers may be indicated in a reducedMaxCCs_SN IE in the CG-ConfigInfo IE.

As further shown in <FIG>, and by reference number <NUM>, BS2 may receive the SN modification/addition request and may accept the assigned quantity of component carriers by transmitting an SN modification/addition response to BS2. In some aspects, BS1 may transmit the SN modification/addition request via the backhaul between BS1 and BS2. In some aspects, the SN modification/addition request may include a CG-Config IE that indicates acceptance of the assigned quantity of component carriers.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a first BS, in accordance with various aspects of the present disclosure. Example process <NUM> is an example where the first BS (e.g., BS <NUM> illustrated and described above in connection with <FIG> and <FIG>, a BS illustrated and described above in one or more of <FIG>, and/or the like) performs operations associated with coordinating overheating assistance information in a dual connectivity configuration.

As shown in <FIG>, in some aspects, process <NUM> may include receiving, from a UE, an overheating assistance information communication that indicates a maximum quantity of component carriers, combined between the first BS and a second BS, for the UE (block <NUM>). For example, the first BS (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive, from a UE, an overheating assistance information communication that indicates a maximum quantity of component carriers, combined between the first BS and a second BS, for the UE, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include transmitting, to the second BS and based at least in part on receiving the overheating assistance information communication, a request to reduce a quantity of component carriers of the second BS configured for the UE such that a total quantity of component carriers, between the first BS and the second BS, configured for the UE satisfies the maximum quantity of component carriers (block <NUM>). For example, the first BS (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit, to the second BS and based at least in part on receiving the overheating assistance information communication, a request to reduce a quantity of component carriers of the second BS configured for the UE such that a total quantity of component carriers, between the first BS and the second BS, configured for the UE satisfies the maximum quantity of component carriers, as described above.

In a first aspect, transmitting the request comprises transmitting the request via an Xn backhaul interface or an X2 backhaul interface. In a second aspect, alone or in combination with the first aspect, process <NUM> includes transmitting, to the second BS, an indication of one or more overheating assistance parameters indicated in the overheating assistance information communication, wherein the one or more overheating assistance parameters include at least one of the maximum quantity of component carriers, a maximum throughput for the UE, a maximum NR FR1 bandwidth for the UE, a maximum NR FR2 bandwidth for the UE, a maximum quantity of FR1 MIMO layers for the UE, or a maximum quantity of FR2 MIMO layers for the UE.

In a third aspect, alone or in combination with one or more of the first and second aspects, the maximum quantity of component carriers includes at least one of a maximum quantity of downlink component carriers, combined between the first BS and the second BS, for the UE, or a maximum quantity of uplink component carriers, combined between the first BS and the second BS, for the UE, and the request to reduce the quantity of component carriers of the second BS configured for the UE comprises: a request to release one or more downlink SCells of the second BS for the UE, or a request to release one or more uplink SCells of the second BS for the UE. In a fourth aspect, alone or in combination with one or more of the first through third aspects, the one or more downlink SCells are indicated in an sCellToReleaseList information element, and the one or more uplink SCells are indicated in an sCellToReleaseList-UL information element.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, process <NUM> includes receiving, from the second BS, an indication of a rejection of the request to reduce the quantity of component carriers of the second BS configured for the UE; modifying the request to reduce the quantity of component carriers of the second BS configured for the UE based at least in part on receiving the indication of the rejection; retransmitting, to the second BS, the request to reduce the quantity of component carriers of the second BS configured for the UE after modifying the request to reduce the quantity of component carriers of the second BS configured for the UE; and receiving, from the second BS, the indication of the acceptance of the request to reduce the quantity of component carriers of the second BS configured for the UE based at least in part on retransmitting the request to reduce the quantity of component carriers of the second BS configured for the UE.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the rejection of the request indicates at least one of: one or more different downlink SCells in an sCellToReleaseList information element, or one or more different uplink SCells in an sCellToReleaseList-UL information element. In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the request to reduce the quantity of component carriers of the second BS configured for the UE comprises an indication of a reduced quantity of component carriers of the second BS for the UE, where the reduced quantity of component carriers is indicated in a reducedMaxCCs_SN information element.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, process <NUM> includes receiving, from the second BS, an indication of a different reduced quantity of component carriers of the second BS for the UE; modifying the request to reduce the quantity of component carriers of the second BS configured for the UE based at least in part on the different reduced quantity of component carriers of the second BS for the UE; retransmitting, to the second BS, the request to reduce the quantity of component carriers of the second BS configured for the UE after modifying the request to reduce the quantity of component carriers of the second BS configured for the UE; and receiving, from the second BS, the indication of the acceptance of the request to reduce the quantity of component carriers of the second BS configured for the UE based at least in part on retransmitting the request to reduce the quantity of component carriers of the second BS configured for the UE.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the different reduced quantity of component carriers is indicated in a reducedMaxCCs_SN information element of an SN modification/addition request acknowledgement communication, and the SN modification/addition request acknowledgement communication indicates rejection of the request to reduce the quantity of component carriers of the second BS configured for the UE. In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the different reduced quantity of component carriers is indicated in a reducedMaxCCs_SN information element of a secondary node modification required communication.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the UE, the first BS, and the second BS are deployed in a dual connectivity configuration; the first BS is a <NUM> NR BS or an LTE BS, and the second BS is a <NUM> NR BS or an LTE BS. In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the first BS is a <NUM> NR BS, the overheating assistance information communication includes a reducedUE-Category parameter, associated with the first BS, indicating a maximum throughput for the UE, and the method further comprises transmitting, to the second BS, an indication of the reducedUE-Category parameter.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, process <NUM> includes transmitting, to the UE and based at least in part on receiving an indication of an acceptance from the second BS of the request, a radio resource control connection reconfiguration communication to cause the quantity of component carriers of the second BS configured for the UE to be reduced.

<FIG> is a conceptual data flow diagram <NUM> illustrating a data flow between different components in an example apparatus <NUM>. The apparatus <NUM> may be a BS (e.g., BS <NUM> illustrated and described above in connection with <FIG> and <FIG>, a BS illustrated and described above in one or more of <FIG>, and/or the like). In some aspects, the apparatus <NUM> includes a reception component <NUM>, a modifying component <NUM>, and/or a transmission component <NUM>.

In some aspects, the reception component <NUM> may receive, from another apparatus <NUM> (e.g., a UE <NUM>), an overheating assistance information communication that indicates a maximum quantity of component carriers, combined between the apparatus <NUM> and another apparatus <NUM> (e.g., another BS), for the apparatus <NUM>. In some aspects, transmission component <NUM> may transmit, to the apparatus <NUM> and based at least in part on reception component <NUM> receiving the overheating assistance information communication, a request to reduce a quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> such that a total quantity of component carriers, between the apparatus <NUM> and the apparatus <NUM>, configured for the apparatus <NUM> satisfies the maximum quantity of component carriers. In some aspects, transmission component <NUM> may transmit, to the apparatus <NUM> and based at least in part on reception component <NUM> receiving an indication of an acceptance from the apparatus <NUM> of the request, a radio resource control connection reconfiguration communication to cause the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> to be reduced.

In some aspects, the transmission component <NUM> may transmit, to the apparatus <NUM>, an indication of one or more overheating assistance parameters indicated in the overheating assistance information communication. In some aspects, the reception component <NUM> may receive, from the apparatus <NUM>, an indication of a rejection of the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>. In some aspects, modifying component <NUM> may modify the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> based at least in part on reception component <NUM> receiving the indication of the rejection. In some aspects, transmission component <NUM> may retransmit, to the apparatus <NUM>, the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> after modifying component <NUM> modifies the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>. In some aspects, the reception component <NUM> may receive, from the apparatus <NUM>, the indication of the acceptance of the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> based at least in part on retransmitting the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>.

In some aspects, reception component <NUM> may receive, from the apparatus <NUM>, an indication of a different reduced quantity of component carriers of the apparatus <NUM> for the apparatus <NUM>. In some aspects, modifying component <NUM> may modify the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> based at least in part on the different reduced quantity of component carriers of the apparatus <NUM> for the apparatus <NUM>. In some aspects, transmission component <NUM> may retransmit, to the apparatus <NUM>, the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> after modifying component <NUM> modifies the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>. In some aspects, reception component <NUM> may receive, from the apparatus <NUM>, the indication of the acceptance of the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> based at least in part on transmission component <NUM> retransmitting the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>.

In some aspects, the reception component <NUM> may include an antenna (e.g., antenna <NUM>), a MIMO detector (e.g., MIMO detector <NUM>), a receive processor (e.g., receive processor <NUM>), a controller/processor (e.g., controller/processor <NUM>), a memory (e.g., memory <NUM>), and/or the like. In some aspects, the modifying component <NUM> may include a receive processor (e.g., receive processor <NUM>), a transmit processor (e.g., transmit processor <NUM>), a controller/processor (e.g., controller/processor <NUM>), a memory (e.g., memory <NUM>), and/or the like. In some aspects, the transmission component <NUM> may include an antenna (e.g., antenna <NUM>), a TX MIMO processor (e.g., TX MIMO processor <NUM>), a transmit processor (e.g., transmit processor <NUM>), a controller/processor (e.g., controller/processor <NUM>), a memory (e.g., a memory <NUM>), and/or the like.

The apparatus may include additional components that perform each of the blocks of the algorithm in the aforementioned process <NUM> of <FIG> and/or the like. Each block in the aforementioned process <NUM> of <FIG> and/or the like may be performed by a component and the apparatus may include one or more of those components.

<FIG> is a diagram <NUM> illustrating an example of a hardware implementation for an apparatus <NUM>' employing a processing system <NUM>. The apparatus <NUM>' may be BS (e.g., BS <NUM> illustrated and described above in connection with <FIG> and <FIG>, a BS illustrated and described above in one or more of <FIG>, and/or the like).

The processing system <NUM> may be implemented with a bus architecture, represented generally by the bus <NUM>. The bus <NUM> may include any number of interconnecting buses and bridges depending on the specific application of the processing system <NUM> and the overall design constraints. The bus <NUM> links together various circuits including one or more processors and/or hardware components, represented by the processor <NUM>, the components <NUM>, <NUM>, <NUM>, and the computer-readable medium / memory <NUM>. The bus <NUM> may also link various other circuits such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore will not be described any further.

The processing system <NUM> may be coupled to a transceiver <NUM>. The transceiver <NUM> is coupled to one or more antennas <NUM>. The transceiver <NUM> provides a means for communicating with various other apparatuses over a transmission medium. The transceiver <NUM> receives a signal from the one or more antennas <NUM>, extracts information from the received signal, and provides the extracted information to the processing system <NUM>, specifically the reception component <NUM>. In addition, the transceiver <NUM> receives information from the processing system <NUM>, specifically the transmission component <NUM>, and based at least in part on the received information, generates a signal to be applied to the one or more antennas <NUM>. The processing system <NUM> includes a processor <NUM> coupled to a computer-readable medium / memory <NUM>. The processor <NUM> is responsible for general processing, including the execution of software stored on the computer-readable medium / memory <NUM>. The software, when executed by the processor <NUM>, causes the processing system <NUM> to perform the various functions described herein for any particular apparatus. The computer-readable medium / memory <NUM> may also be used for storing data that is manipulated by the processor <NUM> when executing software. The processing system further includes at least one of the components <NUM>, <NUM>, and <NUM>. The components may be software modules running in the processor <NUM>, resident/stored in the computer-readable medium / memory <NUM>, one or more hardware modules coupled to the processor <NUM>, or some combination thereof. The processing system <NUM> may be a component of the BS and may include the memory <NUM> and/or at least one of the transmit processor <NUM>, the TX MIMO processor <NUM>, the receive processor <NUM>, and/or the controller/processor <NUM>.

In some aspects, the apparatus <NUM>/<NUM>' for wireless communication includes means for receiving, from another apparatus <NUM> (e.g., a UE <NUM>), an overheating assistance information communication that indicates a maximum quantity of component carriers, combined between the apparatus <NUM>/<NUM>' and another apparatus <NUM> (e.g., another BS), for the apparatus <NUM>, means for transmitting, to the apparatus <NUM> and based at least in part on receiving the overheating assistance information communication, a request to reduce a quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> such that a total quantity of component carriers, between the apparatus <NUM>/<NUM>' and the apparatus <NUM>, configured for the <NUM> satisfies the maximum quantity of component carriers, means for transmitting, to the apparatus <NUM> and based at least in part on receiving an indication of an acceptance from the apparatus <NUM> of the request, a radio resource control connection reconfiguration communication to cause the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> to be reduced. In some aspects, the apparatus <NUM>/<NUM>' for wireless communication includes means for transmitting, to the apparatus <NUM>, an indication of one or more overheating assistance parameters indicated in the overheating assistance information communication.

In some aspects, the apparatus <NUM>/<NUM>' for wireless communication includes means for receiving, from the apparatus <NUM>, an indication of a rejection of the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>, means for modifying the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> based at least in part on receiving the indication of the rejection, means for retransmitting, to the apparatus <NUM>, the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> after modifying the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>, and means for receiving, from the apparatus <NUM>, the indication of the acceptance of the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> based at least in part on retransmitting the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>.

In some aspects, the apparatus <NUM>/<NUM>' for wireless communication includes means for receiving, from the apparatus <NUM>, an indication of a different reduced quantity of component carriers of the apparatus <NUM> for the apparatus <NUM>, means for modifying the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> based at least in part on the different reduced quantity of component carriers of the apparatus <NUM> for the apparatus <NUM>, means for retransmitting, to the apparatus <NUM>, the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> after modifying the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>, and means for receiving, from the apparatus <NUM>, the indication of the acceptance of the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM> based at least in part on retransmitting the request to reduce the quantity of component carriers of the apparatus <NUM> configured for the apparatus <NUM>.

As described elsewhere herein, the processing system <NUM> may include the transmit processor <NUM>, the TX MIMO processor <NUM>, the receive processor <NUM>, and/or the controller/processor <NUM>. In one configuration, the aforementioned means may be the transmit processor <NUM>, the TX MIMO processor <NUM>, the receive processor <NUM>, and/or the controller/processor <NUM> configured to perform the functions and/or operations recited herein.

Claim 1:
A method of wireless communication performed by a first base station, BS, the method comprising:
receiving (<NUM>), from a user equipment, UE, information that indicates one or more overheating assistance parameters and a maximum quantity of component carriers, combined between the first BS and a second BS, for the UE;
transmitting (<NUM>), to the second BS and based at least in part on receiving the information, a request to reduce a quantity of component carriers of the second BS configured for the UE such that a total quantity of component carriers, combined between the first BS and the second BS, configurable for the UE satisfies the maximum quantity of component carriers; and
transmitting, to the second BS, an indication of one or more of the one or more overheating assistance parameters,
wherein the one or more overheating assistance parameters include at least one of:
a maximum New Radio, NR, frequency range <NUM>, FR1, bandwidth for the UE,
a maximum NR frequency range <NUM>, FR2, bandwidth for the UE,
a maximum quantity of FR1 multiple input multiple output, MIMO, layers for the UE, or
a maximum quantity of FR2 MIMO layers for the UE.