Semi-independent non-continuous reception group

Abstract

Methods, systems, and devices for wireless communications are described. A semi-independent discontinuous reception (DRX) group configuration for a user equipment (UE) configured to communicate on at least a primary DRX group (PDG) and a secondary DRX group (SDG). The UE and the base station may implement DRX coupling rules to ensure that the PDG is in active mode when the SDG is in active mode. In some examples, the PDG, the SDG, or both may be configured for a DRX long cycle, a DRX short cycle, or both. The UE may determine an active or inactive mode timer for each semi-independent DRX group. In some cases, when the SDG active mode is triggered, the UE may trigger or extend the active mode of the PDG. Additionally, when the active mode of the PDG expires, the UE may end the active mode of the SDG.

Description

[0001] Cross Reference

[0002] This patent application claims the benefit of U.S. provisional patent application serial number 62 / 992,885, filed by NAM et al. on March 20, 2020, entitled “SEMI-INDEPENDENT DISCONTINUOUS RECEPTION GROUPS”; and U.S. patent application serial number 17 / 203,575, filed by NAM et al. on March 16, 2021, entitled “SEMI-INDEPENDENT DISCONTINUOUS RECEPTION GROUPS”; each of which is assigned to the assignee of this application. Technical Field

[0003] The following relates generally to wireless communications, and more particularly, to discontinuous reception (DRX) communications. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems can support 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) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be 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 frequency division multiple access (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 or one or more network access nodes, each base station or network access node simultaneously supporting communication with multiple communication devices, which may be further referred to as user equipment (UE).

[0005] In some wireless communication systems, a UE may enter a discontinuous reception (DRX) mode to save power usage at the UE. When the UE operates in DRX mode, the UE may switch between an active mode and an inactive mode during a DRX cycle. When the UE is in an active DRX duration, the UE may be configured to send and receive information, and when the UE is in an inactive DRX duration, the UE may avoid monitoring signals from a base station and may also avoid sending or receiving some types of information. In some examples, the base station may also enter a DRX mode to save power usage at the base station. Additionally, the DRX mode may include multiple DRX groups configured in different frequency ranges. Therefore, efficient techniques are desired to accommodate multiple DRX groups (e.g., multiple DRX configurations) in a wireless communication system. Summary of the Invention

[0006] The described technology relates to improved methods, systems, devices and apparatus for supporting semi-independent discontinuous reception (DRX) groups. Generally, the described technology provides a semi-independent DRX group configuration for a user equipment (UE), which is configured to communicate on at least a primary DRX group (PDG) and a secondary DRX group (SDG) (e.g., a semi-independent DRX group). The UE and the base station can implement DRX coupling rules to ensure that the PDG is in active mode when the SDG is in active mode. In some examples, the PDG, SDG, or both can be configured for a DRX long cycle, a DRX short cycle, or both. The UE can determine an active or inactive mode timer for each semi-independent DRX group. In some cases, when the SDG active mode is triggered, the UE can trigger or extend the active mode of the PDG. Additionally, when the active mode of the PDG expires, the UE can end the active mode of the SDG.

[0007] A method for wireless communication at a UE is described. The method may include receiving a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for carrier aggregation (CA) communications with a base station over a primary set of component carriers (CCs); receiving a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for CA communications with the base station over a secondary set of CCs; and operating the UE in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0008] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to: receive a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for performing CA communications with a base station via a primary group of CCs; receive a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the base station via a secondary group of CCs; and operate the UE in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0009] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for receiving a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for performing CA communications with a base station via a primary group of CCs; means for receiving a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the base station via a secondary group of CCs; and means for operating the UE in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0010] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: receive a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for performing CA communications with a base station via a primary group of CCs; receive a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the base station via a secondary group of CCs; and operate the UE in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: receiving a downlink signal from a base station on one or more CCs of a secondary group during a second activation state of a second DRX operation; and determining, based on receiving the downlink signal on one or more CCs of the secondary group according to a DRX coupling rule, to start or restart a first inactivity timer of the primary group and a second inactivity timer of the secondary group.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the downlink signal may include a physical downlink control channel (PDCCH) indicating a new data transmission on a downlink or uplink shared channel.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: receiving a downlink signal from a base station on one or more CCs of a primary group during a first activation state of a first DRX operation; and determining to start or restart a first inactivity timer of the primary group based on receiving the downlink signal on one or more CCs of the primary group, wherein a second inactivity timer of the secondary group is not started or restarted after the downlink signal is received on the one or more CCs of the primary group.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the downlink signal may include a PDCCH indicating a new data transmission on a downlink or uplink shared channel.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the DRX coupling rules may include operations, features, components, or instructions for determining that a timer associated with a first activation state, a second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained based on the timer being running for each of the primary group and the secondary group.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: determining that the first activation state is maintained based on that a timer for the second activation state is running, wherein the timer for the first activation state is not running under the same circumstances as the timer for the second activation state is running; avoiding monitoring downlink signals on the primary group based on determining that the first activation state is maintained based on that the timer for the second activation state is running and the timer for the first activation state is not running; and sending an uplink signal on the primary group based on determining that the first activation state is maintained based on that the timer for the second activation state is running and the timer for the first activation state is not running.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a timer associated with the first activation state, the second activation state, or both may include an on-duration timer, an inactivity timer, a downlink retransmission timer, an uplink retransmission timer, a contention resolution timer, or a combination thereof.

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: sending a scheduling request to a base station in an uplink control channel; and determining to maintain the first activation state during a pending duration of the scheduling request, the pending duration including a duration for the UE to wait for a downlink control channel from the base station in response to the scheduling request.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the scheduling request may be sent on one or more CCs of the primary group, one or more CCs of the secondary group, or a combination thereof.

[0020] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a downlink control channel indicating that a transmission of a cell radio network temporary identifier addressed to a medium access control (MAC) entity of the UE has not been received on a CC of the primary group or the secondary group, wherein the first activation state is maintained based on the downlink control channel not being received.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a downlink control channel may be expected to be received after receiving a random access response message as part of a random access procedure.

[0022] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining that a first activation state for a first DRX operation has expired and discontinuing a second activation state for a second DRX operation based on the expiration of the first activation state.

[0023] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a DRX short cycle for the first DRX configuration, the second DRX configuration, or both, including the first DRX operation, the second DRX operation, or both.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first activation state of a first DRX operation associated with a DRX short cycle may be independent of a second activation state of a second DRX operation associated with the DRX short cycle.

[0025] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, configuration of a DRX short cycle of the second DRX operation may be ignored or disabled.

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first DRX configuration, the second DRX configuration, or both may be received via higher layer signaling.

[0027] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving, via higher layer signaling, an indication of a CC to be included in a primary group, a CC to be included in a secondary group, or a combination thereof.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the primary group may include a PDG and the secondary group may include an SDG.

[0029] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first DRX configuration, the second DRX configuration, or both include a connected mode DRX configuration for CA communication defined by a sub-MAC entity across a primary group of CCs and a secondary group of CCs.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the primary group of CCs and the secondary group of CCs may be in the same or different frequency ranges, may have the same or different parameter sets, or a combination thereof.

[0031] A method for wireless communication at a base station is described. The method may include: transmitting a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for performing CA communications with a UE via a primary group of CCs; transmitting a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the UE via a secondary group of CCs; and operating the base station in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0032] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: send a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for performing CA communications with a UE via a primary group of CCs; send a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the UE via a secondary group of CCs; and operate the base station in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0033] Another apparatus for wireless communication at a base station is described. The apparatus may include: means for transmitting a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for performing CA communications with a UE via a primary group of CCs; means for transmitting a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the UE via a secondary group of CCs; and means for operating the base station in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0034] A non-transitory computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor to: transmit a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for performing CA communications with a UE via a primary group of CCs; transmit a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the UE via a secondary group of CCs; and operate the base station in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0035] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: sending a downlink signal to the UE on one or more CCs of the secondary group during a second activation state of the second DRX operation; and determining to start or restart a first inactivity timer of the primary group and a second inactivity timer of the secondary group based on sending a downlink signal on one or more CCs of the secondary group according to a DRX coupling rule.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the downlink signal may include a PDCCH indicating a new data transmission on a downlink or uplink shared channel.

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: sending a downlink signal to the UE on one or more CCs of the primary group during a first activation state of the first DRX operation; and determining to start or restart a first inactivity timer of the primary group based on sending the downlink signal on the one or more CCs of the primary group, wherein a second inactivity timer of the secondary group is not started or restarted after the downlink signal is received on the one or more CCs of the primary group.

[0038] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the downlink signal may include a PDCCH indicating a new data transmission on a downlink or uplink shared channel.

[0039] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the DRX coupling rules may include operations, features, components, or instructions for determining that a timer associated with a first activation state, a second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained based on the timer being running for each of the primary group and the secondary group.

[0040] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a timer associated with the first activation state, the second activation state, or both may include an on-duration timer, an inactivity timer, a downlink retransmission timer, an uplink retransmission timer, a contention resolution timer, or a combination thereof.

[0041] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following operations: receiving a scheduling request from a UE in an uplink control channel; and determining to maintain the first activation state during a pending duration of the scheduling request, the pending duration comprising a duration for the UE to wait for a downlink control channel from the base station in response to the scheduling request.

[0042] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the scheduling request may be received on one or more CCs of the primary group, one or more CCs of the secondary group, or a combination thereof.

[0043] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for avoiding sending a downlink control channel, the downlink control channel indicating transmission of a C-RNTI addressed to a MAC entity of the UE, wherein, based on the downlink control channel not being sent, the first activation state is maintained.

[0044] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a downlink control channel may be expected to be sent after receiving a random access response message as part of a random access procedure.

[0045] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining that a first activation state of a first DRX operation has expired and discontinuing a second activation state of a second DRX operation based on the expiration of the first activation state.

[0046] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining a DRX short cycle for the first DRX configuration, the second DRX configuration, or both, including the first DRX operation, the second DRX operation, or both.

[0047] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first activation state of a first DRX operation associated with a DRX short cycle may be independent of a second activation state of a second DRX operation associated with the DRX short cycle.

[0048] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, configuration of a DRX short cycle of the second DRX operation may be ignored or disabled.

[0049] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first DRX configuration, the second DRX configuration, or both may be sent via higher layer signaling.

[0050] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending, via higher layer signaling, an indication of CCs to be included in a primary group, CCs to be included in a secondary group, or a combination thereof.

[0051] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the primary group may include a PDG and the secondary group may include an SDG.

[0052] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first DRX configuration, the second DRX configuration, or both include a connected mode DRX configuration for CA communication defined by a MAC entity across a primary group of CCs and a secondary group of CCs.

[0053] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the primary group of CCs and the secondary group of CCs may be in the same or different frequency ranges, may have the same or different parameter sets, or a combination thereof.

[0054] The features and technical advantages of the examples according to the present disclosure have been outlined in a rather broad manner so that the detailed description that follows may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily used as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, their organization and method of operation, and associated advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description and not as a definition of limitations to the claims.

[0055] Although various aspects and embodiments are described in this application by way of illustration of some examples, it will be understood by those skilled in the art that additional implementations and use cases may occur in many different arrangements and scenarios. The innovations described herein may be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, embodiments and / or uses may be implemented via integrated chip embodiments and other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchase equipment, medical devices, devices supporting artificial intelligence (AI), etc.). Although some examples may or may not be specifically targeted at use cases or applications, the wide applicability of the described innovations may occur. The scope of implementations may range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some actual settings, the devices incorporating the described aspects and features may also necessarily include additional components and features for implementing and practicing the claimed and described embodiments. For example, the transmission and reception of wireless signals necessarily include multiple components for analog and digital purposes (e.g., hardware components include antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The innovations described herein are intended to be practiced in devices of various sizes, shapes, and configurations, chip-level components, systems, distributed arrangements, end-user devices, and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 An example of a wireless communication system supporting semi-independent discontinuous reception (DRX) groups according to aspects of the present disclosure is shown.

[0057] Figure 2 An example of a wireless communication system supporting semi-independent DRX groups according to aspects of the present disclosure is shown.

[0058] Figure 3 Examples of DRX configurations according to aspects of the present disclosure are shown.

[0059] Figure 4 Examples of DRX short cycle configurations according to aspects of the present disclosure are shown.

[0060] Figure 5 An example of a process flow for supporting semi-independent DRX groups according to aspects of the present disclosure is shown.

[0061] Figure 6 and Figure 7 A block diagram of a device supporting semi-independent DRX groups according to aspects of the present disclosure is shown.

[0062] Figure 8 A block diagram of a user equipment (UE) communication manager supporting semi-independent DRX groups according to aspects of the present disclosure is shown.

[0063] Figure 9 A diagram of a system including devices supporting semi-independent DRX groups is shown in accordance with aspects of the present disclosure.

[0064] Figure 10 and Figure 11 A block diagram of a device supporting semi-independent DRX groups according to aspects of the present disclosure is shown.

[0065] Figure 12 A block diagram of a base station communication manager supporting semi-independent DRX groups according to aspects of the present disclosure is shown.

[0066] Figure 13 A diagram of a system including devices supporting semi-independent DRX groups is shown in accordance with aspects of the present disclosure.

[0067] Figures 14 to 20 A flow chart illustrating a method of supporting semi-independent DRX groups according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0068] In some wireless communication systems, a discontinuous reception (DRX) mode may be configured for different component carriers (CCs) of a carrier aggregation (CA) communication configuration between a user equipment (UE) and a base station. Each CC of the CA may be in a different frequency range and have a different parameter set (numerology). Therefore, based on the frequency range / parameter set used by the CC, the CC may be grouped into a primary DRX group (PDG) and a secondary DRX group (SDG). However, the activation time duration of the SDG may be a different length duration (e.g., shorter) than the activation time duration of the PDG (e.g., to save power). Additionally, the PDG may be used for important signaling such as paging, system information, time slot format indication, wake-up / secondary cell (SCell) sleep indication, uplink control information, confirmation feedback, etc. (e.g., the SDG may not be configured for uplink transmission). Therefore, it may be desirable to ensure that the PDG is in an activated state regardless of the activation time duration, as long as the SDG is in an activated state, to enable communication of important signaling on both the PDG and the SDG.

[0069] As described herein, in order to ensure that the PDG is in the activation time when the SDG is also in the activation time, some dependencies in the DRX process may be taken into account. For example, when a downlink control channel (e.g., a physical downlink control channel (PDCCH)) indicating a new data transmission in the SDG is received, a timer for the activation time of the PDG and the SDG may be started or restarted. Additionally or alternatively, when the DRX cycle is configured, the activation time of the PDG may include the time when the on-duration timer, inactivity timer, downlink retransmission timer, uplink retransmission timer or contention resolution timer for the PDG or SDG is activated. In some cases, the PDG activation time may also be maintained when a scheduling request is sent in the PDG or SDG, and when the scheduling request is pending. Additionally, the PDG activation time may be maintained when, after receiving a random access response message, a downlink control channel indicating a new transmission of a cell radio network temporary identifier (C-RNTI) addressed to the medium access control (MAC) entity of the UE is not received in the PDG or SDG. In some cases, if the PDG's inactivity timer expires (e.g., causing the PDG to enter a sleep or inactivity period), the SDG's inactivity timer may also be stopped. The techniques described above may also be used for DRX short cycle durations. In some cases, for DRX short cycles, the timers for the PDG and SDG's activation periods may be independent of each other. Additionally or alternatively, the SDG's DRX short cycle may be ignored or disabled.

[0070] Various aspects of the present disclosure are initially described in the context of a wireless communication system. Additionally, various aspects of the present disclosure are illustrated using additional wireless communication systems, DRX configurations, DRX short cycle configurations, and process flows. Various aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow charts related to semi-independent DRX groups.

[0071] Figure 1 An example of a wireless communication system 100 supporting semi-independent DRX groups according to aspects of the present disclosure is shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0072] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100 and may be devices of varying forms or capabilities. Base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which a UE 115 and base station 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographic area over which base stations 105 and UEs 115 may support communication of signals according to one or more radio access technologies.

[0073] UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, mobile, or both at different times. UEs 115 may be devices of different forms or capabilities. Figure 1 Some example UEs 115 are shown in FIG. The UEs 115 described herein may be capable of communicating with various types of devices, such as with other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relays, integrated access and backhaul (IAB) nodes, or other network equipment), such as Figure 1 shown.

[0074] The base stations 105 can communicate with each other, with the core network 130, or both. For example, the base stations 105 can interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 can communicate with each other directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130), or both, via the backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, the backhaul links 120 can be or include one or more wireless links.

[0075] The one or more base stations 105 described herein may include or may be referred to by one of ordinary skill in the art as a base transceiver station, a radio 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 Home NodeB, a Home eNodeB, or other suitable terminology.

[0076] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where a "device" may also be referred to as a unit, a station, a terminal, or a client, etc. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Things (IoE) device, a machine type communication (MTC) device, etc., which may be implemented in various objects such as appliances, vehicles, meters, etc.

[0077] like Figure 1 As shown, the UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115 that may sometimes act as relays as well as base stations 105 and network devices (including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc.).

[0078] UE 115 and base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio spectrum resources with a defined physical layer structure for supporting communication link 125. For example, a carrier used for communication link 125 can include a portion of a radio spectrum band (e.g., a bandwidth part (BWP)) operating according to one or more physical layer channels of a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel can carry acquisition signaling (e.g., synchronization signals, system information), control signaling to coordinate carrier operation, user data, or other signaling. The wireless communication system 100 can use carrier aggregation (CA) or multi-carrier operation to support communication with UE 115. Depending on the CA configuration, UE 115 can be configured with multiple downlink CCs and one or more uplink CCs. CA can be used with both frequency division duplex (FDD) and time division duplex (TDD) CCs.

[0079] In some examples (e.g., in a CA configuration), a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be positioned according to a channel grid for ease of discovery by a UE 115. A carrier may operate in a standalone mode, where initial acquisition and connection may be performed by a UE 115 via the carrier, or a carrier may operate in a non-standalone mode, where connections are anchored using a different carrier (e.g., a carrier of the same or a different radio access technology).

[0080] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0081] A carrier may be associated with a particular bandwidth of a radio spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of determined bandwidths of a carrier of a particular radio access technology (e.g., 1.4 megahertz (MHz), 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). A device of the wireless communication system 100 (e.g., a base station 105 or a UE 115 or both) may have a hardware configuration that supports communication on a particular carrier bandwidth, or may be configured to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a subband, a BWP) or all of the carrier bandwidth.

[0082] The signal waveform transmitted via the carrier may be composed of multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM technology, a resource element may be composed of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and the subcarrier spacing are anti-correlated. The number 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). Therefore, the more resource elements received by the UE 115 and the higher the order of the modulation scheme, the higher the data rate of the UE 115 may be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity of communications with the UE 115.

[0083] One or more parameter sets for a carrier may be supported, where the parameter set may include subcarrier spacing (Δf) and cyclic prefix. A carrier may be divided into one or more BWPs with the same or different parameter sets. 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 communications by the UE 115 may be limited to the one or more active BWPs.

[0084] The time interval of the base station 105 or the UE 115 can be expressed as a multiple of the basic time unit. For example, the basic time unit can be referred to as T s =1 / (Δf max ·N f) seconds sampling period, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. Time intervals for communication resources may be organized according to radio frames, each radio frame 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).

[0085] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time 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 multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple code element periods (e.g., depending on the length of the cyclic prefix preceding each code element period). In some wireless communication systems 100, a time slot may be further divided into multiple mini-time slots containing one or more code elements. Excluding the cyclic prefix, each code element period may contain one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0086] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0087] Physical channels may be multiplexed on a carrier according to various techniques. For example, a physical control channel and a physical data channel may be multiplexed on a downlink carrier using 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 a physical control channel may be defined by multiple symbol periods and may extend across the system bandwidth of a carrier or a subset of the system bandwidth. One or more control regions (e.g., CORESETs) may be configured for a group 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 in one or more aggregation levels arranged in a cascaded manner. An aggregation level of a control channel candidate may refer to a plurality of control channel resources (e.g., control channel elements (CCEs)) associated with encoded information of a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0088] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with a base station 105 (e.g., via a carrier) and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), etc.) used to distinguish between adjacent cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. Such a cell may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area, depending on various factors, such as the capabilities of the base station 105. For example, a cell may be or include a building, a subset of a building, an external space between or overlapping geographic coverage areas 110, etc.

[0089] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 115 that has a service subscription with a network provider that supports the macro cell. Compared to a macro cell, a small cell may be associated with a low-power base station 105, and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to a UE 115 that has a service subscription with a network provider, or may provide restricted access to a UE 115 associated with a small cell (e.g., a UE 115 in a closed subscriber group (CSG), a UE 115 associated with a user in a home or office). A base station 105 may support one or more cells and may also support communication on one or more cells using one or more CCs.

[0090] In some examples, a carrier can support multiple cells, and different cells can be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that can provide access to different types of devices.

[0091] In some examples, base stations 105 can be mobile and, therefore, can provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies can overlap, but the different geographic coverage areas 110 can be supported by the same base station 105. In other examples, different base stations 105 can support overlapping geographic coverage areas 110 associated with different technologies. For example, wireless communication system 100 can include a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0092] The wireless communication system 100 may support synchronous operation or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and in some examples, transmissions from different base stations 105 may not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operation.

[0093] Some UEs 115, such as MTC devices or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines, such as via machine-to-machine (M2M) communication. M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that integrate sensors or meters to measure or capture information and relay that information to a central server or application that utilizes the information or presents it to a person interacting with the application. Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based billing for services.

[0094] Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communication (e.g., a mode that supports one-way communication via transmission or reception, but not simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power conservation techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communications, operating over a limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0095] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication and can be supported by one or more mission-critical services, such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably herein.

[0096] In some examples, UE 115 can also communicate directly with other UEs 115 via device-to-device (D2D) communication links 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 using D2D communication can be within the geographic coverage area 110 of base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of base station 105 or otherwise unable to receive transmissions from base station 105. In some examples, a group of UEs 115 communicating via D2D communication can use a one-to-many (1:M) system, in which each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates resource scheduling for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of base station 105.

[0097] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. The vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, vehicles in the V2X system can communicate with roadside infrastructure (such as roadside units), or communicate with the network via one or more network nodes (e.g., base station 105) using vehicle-to-network (V2N) communication, or both.

[0098] 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 interconnections to external networks. The control plane entities may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for UEs 115 served by base stations 105 associated with the core network 130. User IP packets may be transmitted through the user plane entities, which may provide IP address allocation and other functions. The user plane entities may connect to the network operator's IP services 150. The operator IP services 150 may include access to the Internet, an intranet, an IP multimedia subsystem (IMS), or packet-switched streaming services.

[0099] Some network devices, such as base stations 105, may include subcomponents, such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with a UE 115 through one or more other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs), or consolidated into a single network device (e.g., base station 105).

[0100] The wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). The region from 300 MHz to 3 GHz is often referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter long. UHF waves may be blocked or redirected by buildings and environmental features, but the waves can penetrate structures sufficiently for a macrocell to provide service to a UE 115 located indoors. Transmissions using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmissions using the lower frequencies and longer wavelengths of the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0101] The wireless communication system 100 can use licensed and unlicensed radio spectrum bands. For example, the wireless communication system 100 can adopt license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in an unlicensed radio spectrum band, devices such as the base station 105 and the UE 115 can use carrier sensing for conflict detection and avoidance. In some examples, operations in the unlicensed band can be based on a CA configuration and a CC operating in a licensed band (e.g., LAA). Operations in the unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0102] A base station 105 or a 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 a base station 105 or a UE 115 may be located within 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 co-located at an antenna assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with a base station 105 may be located at different geographic locations. A base station 105 may have an antenna array with multiple rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with a UE 115. Similarly, a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panels may support radio frequency beamforming for signals transmitted via the antenna ports.

[0103] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam or a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating in a particular direction relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements can include the transmitting device or the receiving device applying an amplitude shift, a phase shift, or both to signals carried via antenna elements associated with the device. The adjustments associated with each antenna element can be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other direction).

[0104] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, the communication of the bearer or packet data convergence protocol (PDCP) layer can be IP-based. The radio link control (RLC) layer can perform packet segmentation and reassembly to communicate on the logical channel. The MAC layer can perform priority processing and multiplex the logical channel into the transport channel. The MAC layer can also use error detection technology, error correction technology, or both to support retransmission of the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration and maintenance of the RRC connection between the UE 115 and the base station 105 or the core network 130, which supports the radio bearer of the user plane data. At the physical layer, the transport channel can be mapped to the physical channel.

[0105] UE 115 and base station 105 can support retransmission of data to increase the likelihood that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood that data is correctly received over communication link 125. HARQ can include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). Under poor radio conditions (e.g., low signal-to-noise ratio conditions), HARQ can improve the throughput of the MAC layer. In some examples, a device can support same-slot HARQ feedback, wherein the device can provide HARQ feedback in a particular time slot for data received in the previous symbol in the time slot. In other cases, the device can provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0106] In some wireless communication systems, UE 115 may enter DRX mode to save power usage at UE 115. When UE 115 operates in DRX mode, UE 115 may switch between active mode and inactive mode during a DRX cycle. When UE 115 is in an active DRX duration, UE 115 may be configured to send and receive information, and when UE 115 is in an inactive DRX duration, UE 115 may avoid monitoring signals from a base station and may also avoid sending or receiving certain types of information. In some examples, base station 105 may also enter DRX mode to save power usage at base station 105.

[0107] Additionally, the UE 115 may use a connected DRX (CDRX) mode as part of the DRX mode. In some cases, CDRX may be defined for each MAC entity across CCs configured for CA. In this way, CDRX may include different DRX configurations for each MAC entity of the UE 115. For example, different DRX configurations may include specific DRX cycles, on-duration timers (e.g., drx-onDurationTimer), inactivity timers (e.g., drx-InactivityTimer), etc., which are defined as values that are independent of the subcarrier spacing (SCS) (e.g., in "ms"). In some cases, each CC of the CA configuration may be in a different frequency range, have a different parameter set, or both. Therefore, each CC may have different power consumption and delay / throughput characteristics. With a single DRX configuration or a single DRX mode, the trade-off between power savings and scheduling flexibility (e.g., delay / throughput) across CCs may be limited.

[0108] To address the issue of attempting to configure all CCs into a single DRX configuration / mode (e.g., where CCs may be located in different frequency ranges with different parameter sets), SDGs (e.g., additional DRX groups) may be defined and used for CA communication with DRX. For example, the base station 105 may configure an SDG, where the SDG includes separate on-duration timers, inactivity timers, etc. specific to the SDG. Thus, when using a CA configuration, the base station 105 may configure one or more CCs configured with CA into a PDG (e.g., a first DRX group, a primary group, etc.), and may configure one or more different CCs configured with CA into an SDG (e.g., a second DRX group, a secondary group, etc.). In some cases, SDGs may not be usable in conjunction with cross-carrier scheduling. Additionally, in some cases, the timers used for different DRX groups (e.g., with corresponding DRX configurations) may depend on the frequency range used for the DRX group (e.g., the timers used for a DRX configuration in frequency range two (FR2) may be different from the timers used for a DRX configuration in frequency range one (FR1)). In some examples, the PDG may be configured for FR1 (eg, for CCs operating in FR1), and the SDG may be configured for FR2 (eg, for CCs operating in FR2).

[0109] Thus, in some cases, the DRX pattern may include multiple DRX groups (e.g., PDG and SDG) configured in different frequency ranges (e.g., for a CA configuration with a CC in the PDG and a CC in the SDG). For example, the PDG may be configured in a first frequency range (e.g., FR1) and the SDG may be configured in a second frequency range (e.g., FR2). Characteristics of the first frequency range may include high power efficiency and large coverage. Thus, the PDG may send or receive important control data or low-rate and / or delay-tolerant (e.g., low-power) information. Further, the PDG may manage the sending and receiving of some types of information (e.g., uplink control information, paging information, time slot format information, etc.). Characteristics of the second frequency range may include large bandwidth and low latency. Thus, the SDG may send or receive information requiring high rates and / or emergency services, at the expense of high power consumption of the UE 115.

[0110] In some cases, the DRX process of each group can operate independently. That is, the timing of the activation or inactivity duration of the first DRX group will not affect the timing of the activation or inactivity duration of another DRX group. For example, the activation state of the SDG (e.g., the activation time duration) can be different from (e.g., shorter) than the activation state of the PDG (e.g., to save power). Additionally, for power-efficient operation, when there is a demand (e.g., a greater need to send information to the UE 115), the SDG can be used (e.g., staying in the DRX activation time), otherwise it can be kept in the dormant duration of the DRX mode (e.g., outside the activation time). To achieve these power-efficient operations, the base station 105 can configure the timer for the SDG (e.g., drx-onDurationTimer, drx-InactivityTimer, etc.) to be shorter than the timer for the PDG. However, making the timer for the SDG shorter may not be enough. Additionally, the independent DRX group may reduce the throughput and power efficiency of the UE 115. For example, since the PDG controls certain signaling (eg, uplink control information), the UE 115 may not be able to send information of the SDG during the inactivity duration of the PDG.

[0111] The wireless communication system 100 can support efficient techniques for configuring a semi-independent DRX group for a UE 115 that is configured to communicate on at least a PDG and a SDG. As described herein, the UE 115 and the base station 105 can implement DRX coupling rules to ensure that the PDG is in active mode when the SDG is in active mode. In some examples, the semi-independent DRX group can include a DRX long cycle and a DRX short cycle. The UE 115 can manipulate the activation or inactive mode timer for each semi-independent DRX group. In some cases, when the SDG activation mode is triggered, the UE can trigger or extend the activation mode of the PDG. Additionally, when the activation mode of the PDG expires, the UE can end the activation mode of the SDG.

[0112] Figure 2 An example of a wireless communication system 200 supporting semi-independent DRX groups according to aspects of the present disclosure is shown. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100, or can be implemented by aspects of the wireless communication system 100. For example, the wireless communication system 200 can include a base station 105-a and a UE 115-a, which can be examples of corresponding base stations 105 and UE 115, respectively, as described with reference to FIG. Figure 1 described.

[0113] As described herein, to conserve battery power, the UE 115-a may utilize a DRX cycle when communicating with the base station 105-a, the DRX cycle comprising periodic switching of a receiver (e.g., on and off). The DRX cycle may be configured in the downlink direction such that the UE 115-a does not have to decode the PDCCH or receive physical downlink shared channel (PDSCH) transmissions in certain subframes. In some cases, the UE 115-a may continuously monitor the wireless link for indications that the UE 115-a is to receive data. Additionally or alternatively (e.g., to conserve power and extend battery life), the UE 115-a may be configured with a DRX cycle (e.g., configured by the base station 105-a). The DRX cycle may include an on-duration (e.g., an activation time, an activation period, etc.) when the UE 115-a may monitor control information (e.g., on the PDCCH) and a DRX period (e.g., a sleep period, an inactive time, etc.) when the UE 115-a may shut down its radio components. In some cases, UE 115-a may be configured with a DRX short cycle and a DRX long cycle. For example, if UE 115-a is inactive during one or more DRX short cycles, UE 115-a may enter a DRX long cycle. The transition between DRX short cycle, DRX long cycle, and continuous reception may be controlled by an internal timer or by a message from base station 105-a.

[0114] In some cases, UE 115-a may monitor and receive scheduling messages on the PDCCH during the on-duration period. While monitoring the PDCCH for the scheduling message, UE 115-a may initiate a DRX inactivity timer (e.g., drx-InactivityTimer). If the scheduling message is successfully received, UE 115-a may be ready to receive the data indicated by the scheduling message, and the DRX inactivity timer may be reset. When the DRX inactivity timer expires without receiving a scheduling message, UE 115-a may transition to a DRX cycle (e.g., become inactive). Additionally or alternatively, UE 115-a may enter a DRX short cycle and may start a DRX short cycle timer. When the DRX short cycle timer expires, UE 115-a may resume the DRX long cycle.

[0115] Additionally, the DRX cycle may include a CDRX mode, in which the UE 115-a remains connected to the base station 105-a during an on-duration (e.g., a wake-up duration) and a DRX cycle (e.g., a sleep cycle). The CDRX mode may allow the UE 115-a to transition between a sleep state and a wake-up state (e.g., a DRX cycle and an on-duration, or a sleep mode and a wake-up mode, respectively) without signaling. The base station 105-a may schedule PDCCH / PDSCH transmissions during the activation time (e.g., the wake-up state, the on-duration, etc.). Additionally, the UE 115-a may monitor the PDCCH (i.e., wake up or be awakened) during the activation time. In some cases, the activation time may include a time when the on-duration timer is running, the inactivity timer is running, a scheduling request is pending, or a combination thereof. In addition to the activation time, the UE 115-a may sleep while in CDRX (or DRX) mode to save battery power.

[0116] In some cases, when UE 115-a detects uplink data to be sent to base station 105-a, UE 115-a may enter an activation time. During the activation time, UE 115-a may perform a scheduling request operation to request resources and configuration information for subsequent transmission of uplink data. For example, the scheduling request operation may include: a first step in which UE 115-a sends a scheduling request to base station 105-a via an uplink channel (e.g., a physical uplink control channel (PUCCH)); a second step in which base station 105-a sends an uplink grant to UE 115-a via a downlink channel (e.g., a PDCCH) based on receiving the scheduling request; and a third step in which UE 115-a sends uplink data via a separate uplink channel (e.g., a physical uplink shared channel (PUSCH)) on resources as indicated in the uplink grant. In some examples, UE 115-a can additionally save power based on performing scheduling request operations during a single activation time (e.g., a single on-duration) of the CDRX mode.

[0117] In addition to using a DRX cycle (e.g., a DRX / CDRX configuration, a DRX / CDRX mode, etc.), the UE 115-a may also communicate with the base station 105-a using a CA configuration. For example, according to the CA configuration, the UE 115-a may be configured (e.g., by the base station 105-a) with multiple downlink CCs and one or more uplink CCs. Thus, the UE 115-a may receive multiple downlink messages from the base station 105-a on multiple downlink CCs simultaneously, and / or may send multiple uplink messages to the base station 105-a on one or more uplink CCs. Additionally or alternatively, the base station 105-a may send the same downlink message on each of the multiple downlink CCs to increase the chance that the downlink message is successfully received and decoded by the UE 115-a (e.g., to increase reliability), and the UE 115-a may send the same uplink message on each of the one or more uplink CCs to also increase the chance that the uplink message is successfully received and decoded by the base station 105-a (e.g., to increase reliability). However, different CCs may be configured in different frequency ranges (e.g., FR1, FR2, etc.) and / or have different parameter sets (e.g., SCS, slot duration, etc.), such that using a single DRX configuration may not be sufficient for all CCs of a CA configuration.

[0118] Thus, as described herein, in order to use a DRX cycle with a CA configuration, the base station 105-a may configure a semi-independent DRX group 205 for communication with the UE 115-a. For example, the base station 105-a may send a first DRX configuration for the PDG 205-a to the UE 115-a, wherein the PDG 205-a includes one or more CCs configured for CA, and may send a second DRX configuration for the SDG 205-b, wherein the SDG 205-b includes one or more CCs configured for CA that are different from the CCs configured for the PDG 205-a. Additionally, the PDG 205-a may be used for important signaling (e.g., paging, system information, time slot format indication, wake-up / SCell sleep activation, uplink control information, etc.), while the SDG 205-b may be used for on-demand signaling (e.g., emergency services, high-rate services, etc.). In some cases, SDG 205-b may not include uplink CCs or uplink control channel resources, or may not be used for uplink communications. Thus, if UE 115-a has uplink information to send for communications associated with SDG 205-b when SDG 205-a is inactive, UE 115-a may not be able to send the uplink information.

[0119] The techniques described herein may enable UE 115-a and base station 105-a to use rules to ensure that PDG 205-a is in an active state when SDG 205-b is in an active state (e.g., based on a dependency of DRX processes between PDG 205-a and SDG 205-b). For example, the rule may be a DRX coupling rule, wherein a first activation state of PDG 205-a (e.g., via a first DRX configuration) is determined based on a second activation state of SDG 205-b (e.g., via a second DRX configuration), or vice versa (e.g., the second activation state of SDG 205-b is determined based on the first activation state of PDG 205-a). Additionally, base station 105-a may configure (e.g., via higher layer signaling such as an RRC message) which CCs are in PDG 205-a and which CCs are in SDG 205-b (e.g., to enable DRX coupling rules).

[0120] In some cases, the PDG 205-a and the SDG 205-b may include separate parameters for the respective DRX configurations, such as a DRX cycle 210, an activation cycle 215 (e.g., on-duration, activation time, etc.), a sleep cycle 220 (e.g., inactive time, DRX cycle, etc.), etc. For example, the PDG 205-a may have a first DRX cycle 210-a including a first activation cycle 215-a and a first sleep cycle 220-a, and the second DRX cycle 210-a may have a second DRX cycle 210-b including a second activation cycle 215-b and a second sleep cycle 220-b. Additionally, the activation cycle 215 of each DRX group 205 may be referred to as the activation time of the corresponding DRX group 205 of the UE 115-a. Thus, during the activation cycle 215, the UE 115-a may monitor messages and / or communicate with the base station 105-a, and during the sleep cycle 220, the UE 115-a may enter an inactive or sleep mode. Although the second DRX cycle 210-b includes a cycle duration, an activation cycle duration, and a sleep duration that are different from the corresponding durations in the first DRX cycle 210-a (e.g., a shorter duration, a longer duration), the duration of one DRX cycle 210 of a DRX group 205 can be longer or shorter relative to the duration of another DRX cycle 210 of another DRX group 205.

[0121] To support DRX coupling rules for ensuring that PDG 205-a is active when SDG 205-b is active (e.g., or vice versa), the base station 105-a and the UE 115-a may use one or more different options, in part, individually, or in combination. For example, by using the following options, each of the DRX groups 205 may be simultaneously active (e.g., activation time, activation period 215) within a DRX long cycle (e.g., regardless of whether a DRX short cycle is configured for any DRX group 205). In some cases, if the SDG 205-b receives a PDCCH (e.g., downlink control channel) from the base station 105-a indicating a new data transmission (e.g., downlink, uplink, etc.), the UE 115-a and the base station 105-a may trigger the start or restart of inactivity timers (e.g., drx-InactivityTimers) for both the PDG 205-a and the SDG 205-b. That is, if a PDCCH is received on one or more CCs of SDG 205-b, a timer (e.g., an inactivity timer, a drx-InactivityTimer, etc.) used to measure how long UE 115-a has been in a data inactive state may be reset for both PDG 205-a and SDG 205-b (e.g., even if no downlink message is received on PDG 205-a). Thus, PDG 205-a may be prevented from entering sleep earlier than SDG 205-b (e.g., at UE 115-a and known to base station 105-a). Alternatively, if PDG 205-a receives a PDCCH indicating a new data transmission (e.g., downlink, uplink, etc.) from base station 105-a, UE 115-a and base station 105-a can trigger the start or restart of an inactivity timer (e.g., drx-InactivityTimers) for PDG 205-a instead of the start or restart of the inactivity timer for SDG 205-b.

[0122] In some cases, the DRX activation time (e.g., activation cycle 215) in the PDG 205-a can be redefined to support DRX coupling rules. For example, when the DRX cycle 210 is configured, the activation time (e.g., activation state) of the PDG 205-a can be defined as (e.g., including) the time when at least one or all timers associated with the DRX activation time (e.g., DRX activation state) are running on any DRX group 205 (e.g., PDG 205-a and / or SDG 205-b). That is, if an on-duration timer (e.g., drx-onDurationTimer), an inactivity timer (e.g., drx-InactivityTimer), a downlink retransmission timer (e.g., drx-RetransmissionTimerDL), an uplink retransmission timer (e.g., drx-RetransmissionTimerUL), or a contention resolution timer (e.g., for a random access procedure, such as ra-ContentionResolutionTimer) is running on the PDG 205-a and / or SDG 205-b (e.g., or an additional timer for indicating the activation state of the DRX group 205), the activation state of the PDG 205-a can be maintained. In some cases, if the activation state of PDG 205-a is maintained based on that the activation timer of SDG 205-b is running and the activation timer of PDG 205-a is not running under the same circumstances as the activation timer of SDG 205-b is running, UE 115-a can avoid monitoring downlink signals on PDG 205-a and can send uplink signals on PDG 205-a.

[0123] Other events on any DRX group 205 (such as pending scheduling requests) may also be used to define DRX activation times (e.g., activation states) in the PDG 205-a. For example, the activation state of the PDG 205-a may include a time when a scheduling request is sent on a PUCCH in the PDG 205-a and / or SDG 205-b, wherein the PDG 205-a remains in the activation state while the scheduling request is pending. Additionally or alternatively, the activation state of the PDG 205-a may include a time when a newly transmitted PDCCH indicating the C-RNTI of the MAC entity addressed to the UE 115-a is not received on the PDG 205-a or SDG 205-b (e.g., during a random access procedure, such as after successful reception of a random access response by the MAC entity for a random access preamble that was not selected among the random access preambles configured for the contention-based random access procedure).

[0124] In some cases, the DRX activation time definition for the SDG 205-b may include the time during which at least one or all timers (e.g., drx-onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimerDL, drx-RetransmissionTimerUL, ra-ContentionResolutionTimer, etc.) associated with the DRX activation time (e.g., activation state) of the SDG 205-b are running. Additionally or alternatively, if the PDG 205-a transitions (e.g., transitions to an inactive state, a sleep cycle 220, a sleep state, etc.) outside the activation time (e.g., activation state, activation cycle 215, etc.), the SDG 205-b may also transition (e.g., transitions to an inactive state, a sleep cycle 220, a sleep state, etc.) outside the activation time (e.g., activation state, activation cycle 215, etc.). For example, if the first inactivity timer of PDG 205-a expires (e.g., causing PDG 205-a to transition to or enter an inactive or dormant state), then if the second inactivity timer of SDG 205-b is running at this time, the second inactivity timer may be stopped and SDG 205-b may also transition to or enter an inactive or dormant state.

[0125] In some cases, when receiving a PDCCH on any DRX group 205 based on the wake-up signal behavior configured for UE 115-a with any DRX group 205 (e.g., via the corresponding DRX configuration), UE 115-a may start or avoid starting an on-duration timer (e.g., drx-onDurationTimer) on either or both DRX groups 205. That is, the UE behavior related to the start of the on-duration timer (e.g., UE 115-a waking up, receiving a wake-up signal, etc.) may depend on whether UE 115-a is configured to monitor a PDCCH carrying a wake-up signal. For example, when the value of the "PDCCH monitoring" bit is "0" and a PDCCH (e.g., carrying a wake-up signal) is sent to UE 115-a (e.g., and identified / received by UE 115-a), UE 115-a may not start the on-duration timer for all configured DRX groups 205 (e.g., PDG 205-a, SDG 205-b, etc.) in the next DRX long cycle. Alternatively, when the value of the “PDCCH monitoring” bit is “1” and a PDCCH (e.g., carrying a wake-up signal) is sent to and received by UE 115-a, UE 115-a may start the on-duration timers of all configured DRX groups 205 at the next DRX long cycle.

[0126] Additionally, in some cases, during the activation time (e.g., activation state) of the PDG 205-a and / or SDG 205-b (e.g., on a primary cell (PCell), a primary secondary cell (PSCell), etc.), the UE 115-a may not monitor the PDCCH to detect different downlink control information (DCI) formats (e.g., DCI formats 2_6). For example, if the UE 115-a is provided with a wakeup-or-not indication (e.g., ps-WakeupOrNot) in the DRX configuration of the corresponding DRX group 205, the UE 115-a may be indicated by the wakeup-or-not indication regarding whether the UE 115-a may not start or whether the UE 115-a may start the on-duration timer (e.g., drx-OnDurationTimer) for all configured DRX groups 205 for the next DRX cycle. Alternatively, if the UE 115 - a is not provided with a wake-up or do not wake-up indication, the UE 115 - a may not start the activation time indicated by the on-duration timer for all configured DRX groups 205 for the next DRX cycle.

[0127] Additionally, the techniques described above for supporting DRX coupling rules can be extended to the activation time of the DRX short cycle (e.g., if configured). Alternatively, the activation times associated with the DRX short cycle (e.g., DRX short cycle, DRX short cycle, etc.) can be independent for PDG 205-a and SDG 205-b. Additionally or alternatively, the DRX short cycle can be configured on PDG 205-b, while the DRX short cycle can be ignored or disabled for SDG 205-b. Figure 4 The technique of using the DRX short cycle for the PDG 205 - a and the SDG 205 - b is described in more detail.

[0128] Figure 3 An example of a DRX configuration 300 according to aspects of the present disclosure is shown. In some examples, the DRX configuration 300 can implement aspects of the wireless communication system 100, the wireless communication system 200, or both, or can be implemented by aspects of the wireless communication system 100, the wireless communication system 200, or both. For example, the DRX configuration 300 can be used and supported by the UE 115 and the base station 105, which can be examples of corresponding UEs 115 and base stations 105, respectively, as described with reference to FIG. Figure 1 and Figure 2As described herein, the UE 115 and the base station 105 may operate according to a CA configuration having a plurality of DRX groups 305, the plurality of DRX groups 305 having corresponding DRX configurations, wherein the DRX groups 305 include at least a PDG 305-a (e.g., having one or more CCs) and a SDG 305-b (e.g., having one or more different CCs), as described with reference to FIG. Figure 2 For example, each DRX group 305 may include a DRX cycle consisting of at least an active cycle 315 and a sleep cycle 320, such as a first active cycle 315-a and a first sleep cycle 320-a of a PDG 305-a and a second active cycle 315-b and a second sleep cycle 320-b of a SDG 305-b.

[0129] In some cases, if the DRX processes of the DRX groups 305 are completely independent (e.g., the first active cycle 315-a is independent of the second active cycle 315-b, the first sleep cycle 320-a is independent of the sleep cycle 320-b, etc.), the active time of the SDG 305-b (e.g., active state, second active cycle 315-b, etc.) will not be shorter than the active time of the PDG 305-a (e.g., active state, first active cycle 315-a, etc.). For example, even if the timer configured for the SDG 305-b is shorter, the active time of the SDG 305-b can be extended by starting / restarting the inactivity timer (e.g., drx-InactivityTimer) of the SDG 305-b according to the traffic in the SDG 305-b (e.g., or another corresponding DRX group 305). Since the PDG 305-a can be used for important signals such as paging, system information, slot format indication, wake-up / SCell sleep indication, uplink control information (e.g., for a single PUCCH group), etc., it may be desirable to ensure that the activation time of the PDG 305-a includes the activation time of the SDG 305-b (e.g., based on DRX coupling rules). The DRX configuration 300 can include two examples of scenarios 325, in which the DRX groups 305 and the processes of each DRX group 305 are configured and operated independently. In some cases, both scenarios 325 can include the PDG 305-a and the SDG 305-b in the same PUCCH group.

[0130] For the first scenario 325-a, the PDG 305-a may be in an active time while the SDG 305-b is not in an active time (e.g., the first activation period 315-a may include a time when the second activation period 315-b does not occur). Additionally, the UE 115 may be configured (e.g., by the base station 105, another network device, pre-configured, etc.) to perform measurements in one or more measurement occasions 330. For example, the UE 115 may perform measurements on signals received on one or more CCs of the SDG 305-b at the first measurement occasion 330-a and the second measurement occasion 330-b to determine the channel quality of the channel used with the SDG 305-b. In some cases, the measurements may include channel state information (CSI) measurements, where the UE 115 is expected to send a CSI feedback report for the CSI measurements (e.g., to enable the base station 105 to adjust transmission parameters based on the CSI measurements reported in the CSI feedback report). As shown, although the second measurement opportunity 330-b may not be used (e.g., based on the SDG 305-b being in the second sleep period 320-b when the second measurement opportunity 330-b occurs), the UE 115 may send the measured channel quality (e.g., CSI) from the first measurement opportunity 330-a on the PUCCH in the PDG 305-a in a feedback report 335. The feedback report 335 may include a periodic or semi-persistent CSI report for the SDG 305-b sent on the PUCCH in the PDG 305-a.

[0131] For the second scenario 325-b, the PDG 305-a may not be in the activation time, while the SDG 305-b is in the activation time (e.g., the first activation period 315-a does not completely include the second activation period 315-b). In this way, even if the UE 115 is configured for the first measurement opportunity 330-a and the second measurement opportunity 330-b during the second activation period 315-b of the SDG 305-b, and performs channel measurements (e.g., CSI measurements) on the SDG 305-b during the activation time (e.g., activation state, second activation period 315-b), the UE 115 cannot send feedback reports 335 (e.g., periodic / semi-persistent CSI reports) on the PDG 305-a because the PDG 305-a is outside the activation time (e.g., in the first sleep period 320-a). Therefore, resources used to perform measurements during the measurement opportunities 330 in the second scenario 325-b may be wasted by the UE 115. Based on the reference Figure 2With the described techniques, the UE 115 may support DRX coupling rules to ensure that when the SDG 305-b is active, the PDG 305-a is active, and vice versa, so that scenario 325 or other scenarios in which a process or operation cannot be performed due to the inactivation of the PDG 305-a and / or SDG 305-b do not occur.

[0132] For example, when UE 115 is configured to perform CSI measurements using one or more DRX configurations, the following rules may be followed. If UE 115 is configured with DRX, the most recent CSI measurement opportunity on the serving cell (e.g., a different CC for PDG 305-a or SDG 305-b than base station 105) may occur during the DRX activation time of the serving cell for reporting CSI. Additionally or alternatively, if UE 115 is configured with DRX, the UE may not perform CSI reference signal (CSI-RS) resource measurements except during the activation time of the serving cell for measurements based on the CSI configuration configured for the serving cell (e.g., CSI-RS-resource-mobility). In some cases, if the UE 115 is configured to monitor specific DCI (e.g., DCI formats 2_6), the UE 115 may not perform measurements except during the activation time and during the timer duration indicated by the on-duration timer (e.g., drx-onDurationTimer) of the serving cell based on the CSI configuration (e.g., CSI-RS-resource-mobility).

[0133] Additionally or alternatively, if UE 115 is configured with DRX and the DRX cycle in use is greater than a threshold value (e.g., 80 ms), UE 115 may not expect CSI-RS resources to be available for measurement based on the CSI configuration configured for the serving cell (e.g., CSI-RS-resource-mobility) except during the activation time of the serving cell. If UE 115 is configured with DRX and is configured to monitor a DCI format (e.g., DCI format 2_6) and the DRX cycle in use is greater than a threshold value, UE 115 may not expect CSI-RS resources to be available for measurement based on the CSI configuration except during the activation time and during the duration of the serving cell indicated by the on-duration timer (e.g., drx-onDurationTimer). Otherwise, UE 115 may assume that CSI-RS is available for measurement based on the CSI configuration (e.g., CSI-RS-resource-mobility).

[0134] When DRX is configured, the UE 115 may report a CSI report only if at least one CSI-RS transmission opportunity for channel measurement and a CSI-RS and / or CSI interference measurement (CSI-IM) opportunity for interference measurement are received on the serving cell no later than the DRX activation time of the cell of the CSI reference resource, and otherwise discard the report. When the UE 115 is configured to monitor a DCI format (e.g., DCI format 2_6), and if the UE 115 is configured by a higher layer parameter (e.g., an indication for sending periodic CSI reports, such as the PS-Periodic_CSI_TransmitOrNot indication) to report CSI with a higher layer parameter (e.g., reportConfigType) set to "periodic" when the on-duration timer (e.g., drx-onDurationTimer) is not started, the UE 115 may report CSI during the time duration of the serving cell indicated by the on-duration timer (e.g., drx-onDurationTimer) (also outside the activation time). When the UE 115 is configured to monitor a DCI format (e.g., DCI format 2_6), and if the UE 115 is configured by a higher layer parameter (e.g., an indication for sending periodic CSI reports, such as the PS_Periodic_L1-RSRP_TransmitOrNot indication) to report power measurements (e.g., such as reference signal received power (RSRP) for layer 1 (L1-RSRP) measurements) with a higher layer parameter (reportConfigType) set to "periodic" when the on-duration timer (e.g., drx-onDurationTimer) is not started, the UE 115 can report power measurements (e.g., L1-RSRP measurements) during the time duration of the serving cell indicated by the on-duration timer (e.g., drx-onDurationTimer) (also outside the activation time). In some cases, these techniques can be used for CSI reporting of two DRX groups 305.

[0135] Figure 4 An example of a DRX short cycle configuration 400 according to aspects of the present disclosure is shown. In some examples, the DRX short cycle configuration 400 can implement aspects of the wireless communication system 100, the wireless communication system 200, or both, or can be implemented by aspects of the wireless communication system 100, the wireless communication system 200, or both. For example, the DRX short cycle configuration 400 can be used and supported by the UE 115 and the base station 105, which can be examples of the corresponding UE 115 and base station 105, respectively, as shown in FIG. Figures 1 to 3As described herein, the UE 115 and the base station 105 may operate according to a CA configuration having a plurality of DRX groups 405, the plurality of DRX groups 405 having corresponding DRX configurations, wherein the DRX groups 405 include at least a PDG 405-a (e.g., having one or more CCs) and a SDG 405-b (e.g., having one or more different CCs), as described with reference to FIG. Figure 2 and Figure 3 For example, each DRX group 405 may include a DRX cycle 410, which includes at least an activation cycle 415 and a sleep cycle 420, such as a first activation cycle 415-a and a first sleep cycle 420-a of the PDG 305-a and a second activation cycle 415-b and a second sleep cycle 320-b of the SDG 305-b as part of the DRX cycle 410.

[0136] In some cases, the base station 105 may also configure one or more DRX short cycles 425 (e.g., DRX short cycles) for each DRX group 405. For example, the base station 105 may configure a first DRX short cycle 425-a for the PDG 405-a and a second DRX short cycle 425-b for the SDG 405-b, wherein each DRX short cycle 425 includes a configured activation period 430 and a sleep period 435. The first DRX short cycle 425-a may include a first activation period 430-a and a first sleep period 435-a, and the second DRX short cycle 425-b may include a second activation period 430-b and a second sleep period 435-b. For each DRX group 405, the activation period 430 and the sleep period 435 of the DRX short cycle 425 may have the same or different durations as the activation period 415 and the sleep period 420 of the DRX cycle 410. In some cases, the DRX short cycle 425 may be used for signaling and communication (eg, emergency services) as needed, or based on a different timer for each DRX configuration of the corresponding DRX group 405 .

[0137] Subsequently, when the DRX short cycle 425 is configured, the UE 115 may perform different actions. For example, the activation time associated with the DRX short cycle 425 (e.g., activation period 415, activation state, etc.) may be independent for the PDG 405-a and the SDG 405-b. That is, each DRX group 405 may include a separate and independent on-duration timer (e.g., drx-onDurationTimer), an inactivity timer (e.g., drx-InactivityTimer), etc. associated with the DRX short cycle 425 (e.g., DRX short cycle). Based on the reference Figure 2With the described techniques, the on-duration timer, inactivity timer, etc. of the DRX cycle 410 (e.g., DRX long cycle) of each DRX group 405 may be dependent on each other. Additionally or alternatively, a DRX short cycle 425 (e.g., DRX short cycle) may be allowed to be configured on the PDG 405-a, and any DRX short cycle 425 configured on the SDG 405-b may be ignored or prohibited (e.g., by the base station 105 and / or the UE 115).

[0138] In some cases, reference Figure 2 The techniques described for DRX coupling rules to ensure that PDG 405-a is activated when SDG 405-b is activated (and vice versa) can be applied to DRX short cycles 425 (eg, DRX short cycles). For example, when applying reference Figure 2 When the described techniques are used to configure PDG 405-a to be active when SDG 405-b is active, the DRX short cycle and the DRX long cycle may not be distinguishable. In some cases, if only an on-duration timer (e.g., drx-onDurationTimer) is running on SDG 405-b, the activation time of PDG 405-a may not mask (e.g., include) the activation time of SDG 405-b.

[0139] Figure 5 An example of a process flow 500 for supporting semi-independent DRX groups according to aspects of the present disclosure is shown. In some examples, the process flow 500 can implement aspects of the wireless communication system 100, the wireless communication system 200, or both, or can be implemented by aspects of the wireless communication system 100, the wireless communication system 200, or both. For example, the process flow 500 can include a base station 105-b and a UE 115-b, which can be examples of corresponding base stations 105 and UE 115, respectively, as shown in FIG. Figures 1 to 4 As described herein, process flow 500 may illustrate an implementation of semi-independent DRX groups.

[0140] In the following description of process flow 500, operations between UE 115-b and base station 105-b may be performed in a different order or at different times. Certain operations may also be omitted from process flow 500, or other operations may be added to process flow 500. It should be understood that although UE 115-b and base station 105-b are shown as performing several operations of process flow 500, any wireless device may perform the illustrated operations.

[0141] At 505, UE 115-b may receive a first DRX configuration from base station 105-b. The first DRX configuration may be associated with a first DRX operation for performing CA communications with base station 105-b via a primary group of CCs. In some cases, the primary group of CCs may be a PDG.

[0142] At 510, UE 115-b may receive a second DRX configuration from base station 105-b. The second DRX configuration may be associated with a second DRX operation, wherein the second DRX operation is used to perform CA communications with base station 105-b via a secondary group of CCs. In some cases, the first DRX configuration, the second DRX configuration, or both may be received via higher layer signaling (e.g., RRC signaling). Additionally, the secondary group of CCs may be an SDG. In some cases, the first DRX configuration, the second DRX configuration, or both may include a CDRX configuration for CA communications defined by a MAC entity across CCs of the primary group and CCs of the secondary group. Additionally, the CCs of the primary group and the CCs of the secondary group may be in the same or different frequency ranges (e.g., FR1, FR2, etc.), have the same or different parameter sets, or a combination thereof.

[0143] At 515, UE 115-b may begin operating in the first DRX operation and the second DRX operation. UE 115-b may operate according to a DRX coupling rule, which may include determining that a first activation state for the first DRX operation is determined based on a second activation state for the second DRX operation, determining the second activation state based on the first activation state, or both. Further, in some cases, the coupling rule may include determining that a timer associated with the first activation state, the second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained based on the timer being run for each of the primary group and the secondary group. For example, the timer associated with the first activation state, the second activation state, or both may include an on-duration timer, an inactivity timer, a downlink retransmission timer, an uplink retransmission timer, a contention resolution timer, or a combination thereof. Additionally, in some cases, UE 115-b may receive an indication from base station 105-b of a CC to be included in the primary group, a CC to be included in the secondary group, or a combination thereof (e.g., to enable the DRX coupling rule).

[0144] In some cases, upon determining that a timer associated with a first activation state, a second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained based on the timer being running for each of the primary group and the secondary group, UE 115-b and / or base station 105-b may determine that the first activation state is maintained based on the timer for the second activation state being running, wherein the timer for the first activation state is not running under the same circumstances as the timer for the second activation state is running. Subsequently, UE 115-b may refrain from monitoring downlink signals on the primary group and may transmit uplink signals on the primary group, both based on determining that the first activation state is maintained based at least in part on the timer for the second activation state being running and the timer for the first activation state not being running.

[0145] At 520, base station 105-b may transmit a downlink signal to UE 115-b. In some examples, the downlink signal may include a PDCCH indicating a new data transmission on a downlink or uplink shared channel. In some cases, during the second activation state of the second DRX group, the downlink signal may be transmitted on one or more CCs of the secondary group of CCs. Additionally or alternatively, during the primary activation state of the first DRX group, the downlink signal may be transmitted on one or more CCs of the primary group of CCs.

[0146] At 525, UE 115-b and / or base station 105-b may determine to adjust the activation time of the primary group or the secondary group. For example, in some cases, UE 115-b (e.g., and / or base station 105-b) may determine to start or restart a first inactivity timer for the primary group and a second inactivity timer for the secondary group based on receiving a downlink signal on one or more CCs of the secondary group according to a DRX coupling rule. Additionally or alternatively, UE 115-b may determine to start or restart the first inactivity timer for the primary group based on receiving a downlink signal on one or more CCs of the primary group, wherein the second inactivity timer for the secondary group is not started or restarted after the downlink signal is received on the one or more CCs of the primary group. Additionally, UE 115-b and / or base station 105-b may determine that a first activation state of the first discontinuous reception operation has expired, and may stop the second activation state of the second discontinuous reception operation based on the expiration of the first activation state.

[0147] In some cases, UE 115-b may send a scheduling request in an uplink control channel to base station 105-b. Thus, UE 115-b and / or base station 105-b may determine to maintain a first activation state during a pending duration of the scheduling request, the pending duration comprising a duration that UE 115-b waits for a downlink control channel from base station 105-b in response to the scheduling request. In some cases, the scheduling request may be sent on one or more CCs of the primary group, one or more CCs of the secondary group, or a combination thereof. Additionally or alternatively, UE 115-b may determine that a downlink control channel indicating a transmission of a C-RNTI addressed to a MAC entity of UE 115-b has not been received on a CC of the primary group or the secondary group, wherein the first activation state is maintained based on the downlink control channel not being received (e.g., base station 105-b refraining from sending the downlink control channel). In some cases, the downlink control channel is expected to be received / sent after receiving a random access response message as part of a random access procedure.

[0148] Additionally, in some cases, UE 115-b and / or base station 105-b may determine that the first DRX configuration, the second DRX configuration, or both include a DRX short cycle (e.g., a DRX short cycle) for the first DRX operation, the second DRX operation, or both. Thus, the techniques described above may be used for the DRX short cycle. Additionally or alternatively, the first activation state of the first DRX operation associated with the DRX short cycle is independent of the second activation state of the second DRX operation associated with the DRX short cycle (e.g., there is no coupling of the activation states associated with the DRX short cycle). In some cases, the configuration of the DRX short cycle for the second DRX operation may be ignored or disabled.

[0149] Figure 6 A block diagram 600 of a device 605 supporting semi-independent DRX groups according to aspects of the present disclosure is shown. The device 605 can be an example of aspects of the UE 115 as described herein. The device 605 can include a receiver 610, a UE communication manager 615, and a transmitter 620. The device 605 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0150] The receiver 610 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to semi-independent DRX groups, etc.). The information may be passed to other components of the device 605. The receiver 610 may be a reference Figure 9 Examples of various aspects of the transceiver 920 are described. The receiver 610 may use a single antenna or a group of antennas.

[0151] The UE communication manager 615 may receive a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for performing CA communications with a base station via a primary group of CCs. Additionally, the UE communication manager 615 may receive a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the base station via a secondary group of CCs. In some cases, the UE communication manager 615 may then operate in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. The UE communication manager 615 may be an example of aspects of the UE communication manager 910 described herein.

[0152] In some examples, the UE communication manager 615 as described herein can be implemented to achieve one or more potential advantages for the UE 115. For example, based on the DRX coupling rules, the UE communication manager 615 can enable the UE 115 to improve the reliability of successful transmission / reception of communications configured for CA by coupling the activation states of different DRX operations together. For example, based on the activation states of the two different DRX operations being turned on (e.g., according to the DRX coupling rules), any communication identified for one of the DRX operations can still be performed (e.g., the identified communication can be sent or received). As a result, the UE communication manager 615 can send or receive messages that would otherwise be ignored if the activation times for the different DRX operations were not coupled together, thereby improving or increasing the communication reliability of the different DRX operations.

[0153] The UE communication manager 615 or its subcomponents may be implemented in hardware, in code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the UE communication manager 615 or its subcomponents may be performed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0154] The UE communication manager 615 or its subcomponents can be physically located in various locations, including being distributed so that some functions are performed by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the UE communication manager 615 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the UE communication manager 615 or its subcomponents can be combined with one or more other hardware components, including but not limited to input / output (I / O) components, transceivers, network servers, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0155] Transmitter 620 can transmit signals generated by other components of device 605. In some examples, transmitter 620 can be co-located with receiver 610 in a transceiver module. For example, transmitter 620 can be a reference Figure 9 Examples of various aspects of the transceiver 920 are described. The transmitter 620 may use a single antenna or a group of antennas.

[0156] Figure 7 A block diagram 700 of a device 705 supporting semi-independent DRX groups according to aspects of the present disclosure is shown. The device 705 can be an example of aspects of the device 605 or UE 115 as described herein. The device 705 can include a receiver 710, a UE communication manager 715, and a transmitter 735. The device 705 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0157] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to semi-independent DRX groups, etc.). The information may be passed to other components of the device 705. The receiver 710 may be a reference Figure 9 Examples of various aspects of the transceiver 920 are described. The receiver 710 may use a single antenna or a group of antennas.

[0158] UE communication manager 715 may be an example of aspects of UE communication manager 615 as described herein. UE communication manager 715 may include PDG configuration component 720, SDG configuration component 725, and DRX coupling rules component 730. UE communication manager 715 may be an example of aspects of UE communication manager 910 as described herein.

[0159] PDG configuring component 720 can receive a first DRX configuration associated with a first DRX operation for CA communications with a base station over a primary group of CCs.

[0160] The SDG configuring component 725 can receive a second DRX configuration associated with a second DRX operation for CA communications with a base station over a secondary group of CCs.

[0161] The DRX coupling rule component 730 can operate the UE in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0162] Based on the technology for operating in the first DRX operation and the second DRX operation according to the DRX coupling rule, the processor of the UE 115 (e.g., controlling the receiver 710, the transmitter 735 or the like) Figure 9 The transceiver 920 described herein can efficiently communicate using both the first DRX operation and the second DRX operation. For example, communications that were previously not received or transmitted due to one of the DRX operations being inactive can now be successfully transmitted or received based on the DRX coupling rule, due to both DRX operations being active. Thus, the processor can increase reliability and reduce latency for communications that would previously have been discarded or not transmitted without the DRX coupling rule.

[0163] The transmitter 735 can transmit signals generated by other components of the device 705. In some examples, the transmitter 735 can be co-located with the receiver 710 in a transceiver module. For example, the transmitter 735 can be a reference Figure 9 Examples of various aspects of the transceiver 920 are described. The transmitter 735 can use a single antenna or a group of antennas.

[0164] Figure 8 A block diagram 800 of a UE communication manager 805 supporting semi-independent DRX groups in accordance with aspects of the present disclosure is shown. The UE communication manager 805 can be an example of aspects of the UE communication manager 615, the UE communication manager 715, or the UE communication manager 910 described herein. The UE communication manager 805 can include a PDG configuration component 810, an SDG configuration component 815, a DRX coupling rule component 820, a downlink signal inactivity timer component 825, a timer component 830, a scheduling request component 835, a random access component 840, a DRX short cycle component 845, and a CC indication component 850. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0165] The PDG configuration component 810 can receive a first DRX configuration associated with a first DRX operation for performing CA communications with a base station via a primary group of CCs. The SDG configuration component 815 can receive a second DRX configuration associated with a second DRX operation for performing CA communications with a base station via a secondary group of CCs.

[0166] In some cases, the first DRX configuration, the second DRX configuration, or both may be received via higher layer signaling. Additionally, the primary group may be a PDG, and the secondary group may be an SDG. In some cases, the first DRX configuration, the second DRX configuration, or both include a CDRX configuration for Carrier Access (CA) communication defined by a MAC entity across CCs of the primary group and CCs of the secondary group. Additionally, CCs of the primary group and CCs of the secondary group may be in the same or different frequency ranges, have the same or different parameter sets, or a combination thereof.

[0167] The DRX coupling rule component 820 can operate the UE in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. In some examples, the DRX coupling rule component 820 can determine that the first activation state of the first DRX operation has expired, and can discontinue the second activation state of the second DRX operation based on the expiration of the first activation state.

[0168] The downlink signal inactivity timer component 825 may receive a downlink signal from the base station on one or more CCs of the secondary group during a second activation state of the second DRX operation, and may determine, based on the reception of the downlink signal on the one or more CCs of the secondary group, to start or restart a first inactivity timer for the primary group and a second inactivity timer for the secondary group according to a DRX overlap rule. Additionally or alternatively, the downlink signal inactivity timer component 825 may receive a downlink signal from the base station on one or more CCs of the primary group during a first activation state of the first DRX operation, and may determine, based on the reception of the downlink signal on the one or more CCs of the primary group, to start or restart the first inactivity timer for the primary group, wherein the second inactivity timer for the secondary group is not started or restarted after the downlink signal is received on the one or more CCs of the primary group. In some cases, the downlink signal may include a PDCCH indicating new data transmission on a downlink or uplink shared channel.

[0169] The timer component 830 can determine that a timer associated with a first activation state, a second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained based on the timer being running for each of the primary group and the secondary group. In some examples, the timer component 830 can determine that the first activation state is maintained based on a timer for the second activation state being running, wherein the timer for the first activation state is not running under the same circumstances as the timer for the second activation state is running. Subsequently, the timer component 830 can refrain from monitoring downlink signals on the primary group and can transmit uplink signals on the primary group based on determining that the first activation state is maintained based at least in part on the timer for the second activation state being running and the timer for the first activation state not being running. In some cases, the timer associated with the first activation state, the second activation state, or both can include an on-duration timer, an inactivity timer, a downlink retransmission timer, an uplink retransmission timer, a contention resolution timer, or a combination thereof.

[0170] The scheduling request component 835 can send a scheduling request to the base station in an uplink control channel and can determine to maintain the first activation state during a pending duration of the scheduling request, the pending duration comprising a duration for the UE to wait for a downlink control channel from the base station in response to the scheduling request. In some cases, the scheduling request is sent on one or more CCs of the primary group, one or more CCs of the secondary group, or a combination thereof.

[0171] The random access component 840 can determine that a downlink control channel indicating that a transmission of an identifier (RNTI) of a MAC entity addressed to the UE has not been received on a CC of the primary group or the secondary group, wherein the first activation state is maintained based on the downlink control channel not being received. In some cases, the downlink control channel can be expected to be received after receiving a random access response message as part of a random access procedure.

[0172] The DRX short cycle component 845 can determine the first DRX configuration, the second DRX configuration, or both, including a DRX short cycle for the first DRX operation, the second DRX operation, or both. In some cases, the first activation state of the first DRX operation associated with the DRX short cycle can be independent of the second activation state of the second DRX operation associated with the DRX short cycle. Additionally or alternatively, the configuration of the DRX short cycle for the second DRX operation can be ignored or disabled.

[0173] CC indicating component 850 can receive, via higher layer signaling, an indication of CCs to be included in a primary group, CCs to be included in a secondary group, or a combination thereof.

[0174] Figure 9 A diagram of a system 900 including a device 905 supporting semi-independent DRX groups according to aspects of the present disclosure is shown. The device 905 can be an example of, or include components of, the device 605, device 705, or UE 115 as described herein. The device 905 can include components for two-way voice and data communication, including components for sending and receiving communications, including a UE communication manager 910, an I / O controller 915, a transceiver 920, an antenna 925, a memory 930, and a processor 940. These components can communicate electronically via one or more buses (e.g., bus 945).

[0175] The UE communication manager 910 may receive a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for performing CA communications with a base station via a primary group of CCs. Additionally, the UE communication manager 910 may receive a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the base station via a secondary group of CCs. In some cases, the UE communication manager 910 may then operate in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0176] I / O controller 915 can manage input and output signals for device 905. I / O controller 915 can also manage peripheral devices that are not integrated into device 905. In some cases, I / O controller 915 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 915 can use an operating system, such as or another known operating system. In other cases, I / O controller 915 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 915 may be implemented as part of a processor. In some cases, a user may interact with device 905 via I / O controller 915 or via hardware components controlled by I / O controller 915.

[0177] As described above, the transceiver 920 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, the transceiver 920 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 920 can also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and demodulate packets received from the antenna.

[0178] In some cases, a wireless device may include a single antenna 925. However, in some cases, a device may have more than one antenna 925, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0179] The memory 930 may include random access memory (RAM) and read-only memory (ROM). The memory 930 may store computer-readable, computer-executable code 935, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 930 may contain a basic I / O system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0180] The processor 940 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 940 may be configured to operate the memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting semi-independent DRX groups).

[0181] The code 935 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 935 may be stored in a non-transitory computer-readable medium (such as system memory or other types of memory). In some cases, the code 935 may not be directly executable by the processor 940, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein.

[0182] Figure 10 A block diagram 1000 is shown of a device 1005 supporting semi-independent DRX groups according to aspects of the present disclosure. The device 1005 can be an example of aspects of a base station 105 as described herein. The device 1005 can include a receiver 1010, a base station communication manager 1015, and a transmitter 1020. The device 1005 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0183] The receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to semi-independent DRX groups, etc.). The information may be passed to other components of the device 1005. The receiver 1010 may be a reference Figure 13 Examples of various aspects of the transceiver 1320 are described. The receiver 1010 may use a single antenna or a group of antennas.

[0184] The base station communication manager 1015 may send a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is used to perform CA communications with the UE via a primary group of CCs. Additionally, the base station communication manager 1015 may send a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is used to perform CA communications with the UE via a secondary group of CCs. In some cases, the base station communication manager 1015 may then operate in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. The base station communication manager 1015 may be an example of aspects of the base station communication manager 1310 described herein.

[0185] The base station communication manager 1015 or its subcomponents may be implemented in hardware, in code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the base station communication manager 1015 or its subcomponents may be performed by a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0186] The base station communications manager 1015 or its subcomponents can be physically located in various locations, including being distributed such that portions of functionality are performed by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the base station communications manager 1015 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the base station communications manager 1015 or its subcomponents can be combined with one or more other hardware components, including but not limited to I / O components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0187] Transmitter 1020 can transmit signals generated by other components of device 1005. In some examples, transmitter 1020 can be co-located with receiver 1010 in a transceiver module. For example, transmitter 1020 can be a reference Figure 13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1020 can use a single antenna or a group of antennas.

[0188] Figure 11A block diagram 1100 is shown of a device 1105 supporting semi-independent DRX groups according to aspects of the present disclosure. The device 1105 can be an example of aspects of the device 1005 or base station 105 as described herein. The device 1105 can include a receiver 1110, a base station communication manager 1115, and a transmitter 1135. The device 1105 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0189] The receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to semi-independent DRX groups, etc.). The information may be passed to other components of the device 1105. The receiver 1110 may be a reference Figure 13 Examples of various aspects of the transceiver 1320 are described. The receiver 1110 may use a single antenna or a group of antennas.

[0190] The base station communication manager 1115 can be an example of aspects of the base station communication manager 1015 as described herein. The base station communication manager 1115 can include a first DRX configuration component 1120, a second DRX configuration component 1125, and a multi-DRX operation component 1130. The base station communication manager 1115 can be an example of aspects of the base station communication manager 1310 as described herein.

[0191] The first DRX configuration component 1120 can transmit a first DRX configuration associated with a first DRX operation for CA communications with the UE over a primary group of CCs.

[0192] The second DRX configuration component 1125 can transmit a second DRX configuration associated with a second DRX operation for CA communications with the UE over a secondary group of CCs.

[0193] The multi-DRX operation component 1130 can operate the base station in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, the first activation state of the first DRX operation is determined based on the second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0194] The transmitter 1135 can transmit signals generated by other components of the device 1105. In some examples, the transmitter 1135 can be co-located with the receiver 1110 in a transceiver module. For example, the transmitter 1135 can be a reference Figure 13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1135 can use a single antenna or a group of antennas.

[0195] Figure 12 A block diagram 1200 of a base station communication manager 1205 supporting semi-independent DRX groups according to aspects of the present disclosure is shown. The base station communication manager 1205 can be an example of aspects of the base station communication manager 1015, the base station communication manager 1115, or the base station communication manager 1310 described herein. The base station communication manager 1205 can include a first DRX configuration component 1210, a second DRX configuration component 1215, a multi-DRX operation component 1220, a downlink signal transmission component 1225, an activation timer determination component 1230, a scheduling request reception component 1235, a random access procedure component 1240, a DRX short cycle operation component 1245, and a CC configuration indicator 1250. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0196] The first DRX configuration component 1210 can transmit a first DRX configuration associated with a first DRX operation for performing CA communications with a UE via a primary group of CCs. The second DRX configuration component 1215 can transmit a second DRX configuration associated with a second DRX operation for performing CA communications with a UE via a secondary group of CCs.

[0197] In some cases, the first DRX configuration, the second DRX configuration, or both may be sent via higher layer signaling. Additionally, the primary group may be a PDG and the secondary group may be an SDG. In some cases, the first DRX configuration, the second DRX configuration, or both include a CDRX configuration for Carrier Access Control (CA) communication defined by a MAC entity across CCs of the primary group and CCs of the secondary group. Additionally, CCs of the primary group and CCs of the secondary group may be in the same or different frequency ranges, may have the same or different parameter sets, or a combination thereof.

[0198] The multi-DRX operation component 1220 can operate the base station in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. In some examples, the multi-DRX operation component 1220 can determine that the first activation state of the first DRX operation has expired, and can discontinue the second activation state of the second DRX operation based on the expiration of the first activation state.

[0199] The downlink signal transmission component 1225 may transmit a downlink signal to the UE on one or more CCs of the secondary group during a second activation state of the second DRX operation, and may determine, based on the transmission of the downlink signal on the one or more CCs of the secondary group, to start or restart a first inactivity timer for the primary group and a second inactivity timer for the secondary group according to a DRX overlap rule. Additionally or alternatively, the downlink signal transmission component 1225 may transmit a downlink signal to the UE on one or more CCs of the primary group during a first activation state of the first DRX operation, and may determine, based on the transmission of the downlink signal on the one or more CCs of the primary group, to start or restart the first inactivity timer for the primary group, wherein the second inactivity timer for the secondary group is not started or restarted after the downlink signal is received on the one or more CCs of the primary group. In some cases, the downlink signal may include a PDCCH indicating new data transmission on a downlink or uplink shared channel.

[0200] The activation timer determining component 1230 can determine that a timer associated with a first activation state, a second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained based on the timer being running for each of the primary group and the secondary group. In some cases, the timer associated with the first activation state, the second activation state, or both can include an on-duration timer, an inactivity timer, a downlink retransmission timer, an uplink retransmission timer, a contention resolution timer, or a combination thereof.

[0201] The scheduling request receiving component 1235 can receive a scheduling request from the UE in an uplink control channel and can determine to maintain the first activation state during a pending duration of the scheduling request, the pending duration comprising a duration for the UE to wait for a downlink control channel from the base station in response to the scheduling request. In some cases, the scheduling request can be received on one or more CCs of the primary group, one or more CCs of the secondary group, or a combination thereof.

[0202] The random access procedure component 1240 can avoid sending a downlink control channel indicating transmission of a C-RNTI addressed to a MAC entity of the UE, wherein the first activation state is maintained based on the downlink control channel not being sent. In some cases, the downlink control channel can be expected to be sent after receiving a random access response message as part of the random access procedure.

[0203] The DRX short cycle operation component 1245 can determine the first DRX configuration, the second DRX configuration, or both, including a DRX short cycle for the first DRX operation, the second DRX operation, or both. In some cases, a first activation state of the first DRX operation associated with the DRX short cycle can be independent of a second activation state of the second DRX operation associated with the DRX short cycle. Additionally or alternatively, the configuration of the DRX short cycle for the second DRX operation can be ignored or disabled.

[0204] The CC configuration indicator 1250 may transmit an indication of a CC to be included in a primary group, a CC to be included in a secondary group, or a combination thereof via higher layer signaling.

[0205] Figure 13 A diagram of a system 1300 including a device 1305 supporting semi-independent DRX groups according to aspects of the present disclosure is shown. The device 1305 can be an example of or include components of the device 1005, device 1105, or base station 105 as described herein. The device 1305 may include components for two-way voice and data communications, including components for sending and receiving communications, including a base station communication manager 1310, a network communication manager 1315, a transceiver 1320, an antenna 1325, a memory 1330, a processor 1340, and an inter-station communication manager 1345. These components can communicate electronically via one or more buses (e.g., bus 1350).

[0206] The base station communication manager 1310 may send a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is used to perform CA communications with the UE via a primary group of CCs. Additionally, the base station communication manager 1310 may send a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is used to perform CA communications with the UE via a secondary group of CCs. In some cases, the base station communication manager 1310 may operate the base station in the first DRX operation and the second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both.

[0207] The network communications manager 1315 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1315 may manage the transmission of data communications for client devices such as one or more UEs 115 .

[0208] As described above, transceiver 1320 can communicate bidirectionally via one or more antennas, wired or wireless links. For example, transceiver 1320 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1320 can also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and demodulate packets received from the antenna.

[0209] In some cases, a wireless device may include a single antenna 1325. However, in some cases, a device may have more than one 1325 capable of sending or receiving multiple wireless transmissions simultaneously.

[0210] Memory 1330 may include RAM, ROM, or a combination thereof. Memory 1330 may store computer-readable code 1335 including instructions that, when executed by a processor (e.g., processor 1340), cause the device to perform various functions described herein. In some cases, memory 1330 may contain BIOS, which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0211] The processor 1340 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 1340 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into the processor 1340. The processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) to cause the device 1305 to perform various functions (e.g., functions or tasks supporting semi-independent DRX groups).

[0212] The inter-site communication manager 1345 can manage communications with other base stations 105 and can include a controller or scheduler for controlling communications with the UE 115 in cooperation with the other base stations 105. For example, the inter-site communication manager 1345 can coordinate the scheduling of transmissions to the UE 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 1345 can provide an X2 interface within the LTE / LTE-A wireless communication network technology to provide communications between the base stations 105.

[0213] The code 1335 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1335 may be stored in a non-transitory computer-readable medium (such as system memory or other types of memory). In some cases, the code 1335 may not be directly executable by the processor 1340, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein.

[0214] Figure 14 FIG2 shows a flow chart illustrating a method 1400 for supporting semi-independent DRX groups according to aspects of the present disclosure. As described herein, the operations of the method 1400 may be implemented by the UE 115 or its components. For example, the operations of the method 1400 may be implemented by the UE 115 or its components as described in reference to FIG2 . Figures 6 to 9 In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0215] At 1405, the UE may receive a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for CA communication with a base station via a primary group of CCs. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be as described in reference to Figures 6 to 9 Describes the PDG configuration components to execute.

[0216] At 1410, the UE may receive a second DRX configuration associated with a second DRX operation for CA communications with a base station via a secondary group of CCs. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be as described in reference to Figures 6 to 9 Describes the SDG configuration components to execute.

[0217] At 1415, the UE may operate in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be as described with reference to Figures 6 to 9 The DRX coupling rule component described is executed.

[0218] Figure 15FIG2 shows a flow chart illustrating a method 1500 for supporting semi-independent DRX groups according to aspects of the present disclosure. As described herein, the operations of the method 1500 may be implemented by the UE 115 or its components. For example, the operations of the method 1500 may be implemented by the UE 115 or its components as described in reference to FIG2 . Figures 6 to 9 In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0219] At 1505, the UE may receive a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for CA communication with a base station via a primary group of CCs. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be as described in reference to Figures 6 to 9 Describes the PDG configuration components to execute.

[0220] At 1510, the UE may receive a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for CA communication with a base station via a secondary group of CCs. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be as described in reference to Figures 6 to 9 Describes the SDG configuration components to execute.

[0221] At 1515, the UE may operate in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be as described with reference to Figures 6 to 9 The DRX coupling rule component described is executed.

[0222] At 1520, the UE may receive downlink signals from the base station on one or more CCs of the secondary group during a second activation state of the second DRX operation. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be as described with reference to Figures 6 to 9 The downlink signal inactivity timer component is described to perform.

[0223] At 1525, the UE may determine to start or restart a first inactivity timer for the primary group and a second inactivity timer for the secondary group based on receiving downlink signals on one or more CCs of the secondary group according to the DRX overlap rule. The operations of 1525 may be performed according to the methods described herein. In some examples, aspects of the operations of 1525 may be as described in reference to Figures 6 to 9 The downlink signal inactivity timer component is described to perform.

[0224] Figure 16 A flow chart illustrating a method 1600 for supporting semi-independent DRX groups according to aspects of the present disclosure is shown. As described herein, the operations of the method 1600 may be implemented by the UE 115 or a component thereof. For example, the operations of the method 1600 may be implemented by the UE 115 or a component thereof as described in reference to FIG. Figures 6 to 9 In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0225] At 1605, the UE may receive a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for CA communication with a base station via a primary group of CCs. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be as described in reference to Figures 6 to 9 Describes the PDG configuration components to execute.

[0226] At 1610, the UE may receive a second DRX configuration associated with a second DRX operation for CA communications with a base station via a secondary group of CCs. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be as described in reference to Figures 6 to 9 Describes the SDG configuration components to execute.

[0227] At 1615, the UE may operate in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be as described with reference to Figures 6 to 9 The DRX coupling rule component described is executed.

[0228] At 1620, the UE may determine that a timer associated with the first activation state, the second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained based on the timer being running for each of the primary group and the secondary group. The operations of 1620 may be performed according to the methods described herein. In some examples, aspects of the operations of 1620 may be performed as described with reference to Figures 6 to 9 The timer component described here is used for execution.

[0229] Figure 17 FIG2 shows a flow chart illustrating a method 1700 for supporting semi-independent DRX groups according to aspects of the present disclosure. As described herein, the operations of the method 1700 may be implemented by the UE 115 or a component thereof. For example, the operations of the method 1700 may be implemented by the UE 115 or a component thereof as described in reference to FIG2 . Figures 6 to 9 In some examples, the UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0230] At 1705, the UE may receive a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for CA communication with a base station via a primary group of CCs. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be as described in reference to Figures 6 to 9 Describes the PDG configuration components to execute.

[0231] At 1710, the UE may receive a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for CA communication with a base station via a secondary group of CCs. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be as described in reference to Figures 6 to 9 Describes the SDG configuration components to execute.

[0232] At 1715, the UE may operate in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be as described with reference to Figures 6 to 9 The DRX coupling rule component described is executed.

[0233] At 1720, the UE may determine that the first activation state of the first DRX operation has expired. The operations of 1720 may be performed according to the methods described herein. In some examples, aspects of the operations of 1720 may be as described in reference to Figures 6 to 9 The DRX coupling rule component described is executed.

[0234] At 1725, the UE may stop the second activation state of the second DRX operation based on the expiration of the first activation state. The operations of 1725 may be performed according to the methods described herein. In some examples, aspects of the operations of 1725 may be as described in reference to Figures 6 to 9 The DRX coupling rule component described is executed.

[0235] Figure 18 A flow chart illustrating a method 1800 for supporting semi-independent DRX groups according to aspects of the present disclosure is shown. As described herein, the operations of the method 1800 may be implemented by the base station 105 or a component thereof. For example, the operations of the method 1800 may be implemented by a base station 105 or a component thereof as described in reference to FIG. Figures 10 to 13 In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0236] At 1805, the base station may send a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for CA communication with the UE via a primary group of CCs. The operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be as described in reference to Figures 10 to 13 The first DRX configuration component is described to perform.

[0237] At 1810, the base station may send a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for CA communication with the UE via a secondary group of CCs. The operations of 1810 may be performed according to the methods described herein. In some examples, aspects of the operations of 1810 may be as described in reference to Figures 10 to 13 The second DRX configuration component described is performed.

[0238] At 1815, the base station may operate in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. The operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be performed as described with reference to Figures 10 to 13The multiple DRX operation components described are performed.

[0239] Figure 19 A flow chart illustrating a method 1900 for supporting semi-independent DRX groups according to aspects of the present disclosure is shown. As described herein, the operations of the method 1900 may be implemented by the base station 105 or a component thereof. For example, the operations of the method 1900 may be implemented by a base station 105 or a component thereof as described in reference to FIG. Figures 10 to 13 In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0240] At 1905, the base station may send a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for CA communication with the UE via a primary group of CCs. The operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be as described in reference to Figures 10 to 13 The first DRX configuration component is described to perform.

[0241] At 1910, the base station may send a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for CA communication with the UE via a secondary group of CCs. The operations of 1910 may be performed according to the methods described herein. In some examples, aspects of the operations of 1910 may be as described in reference to Figures 10 to 13 The second DRX configuration component described is performed.

[0242] At 1915, the base station may operate in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. The operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be performed as described with reference to Figures 10 to 13 The multiple DRX operation components described are performed.

[0243] At 1920, the base station may determine a first DRX configuration, a second DRX configuration, or both including a DRX short cycle for the first DRX operation, the second DRX operation, or both. The operations of 1920 may be performed according to the methods described herein. In some examples, aspects of the operations of 1920 may be as described in reference to Figures 10 to 13 The DRX short cycle operation components are described to perform.

[0244] Figure 20FIG2 shows a flow chart illustrating a method 2000 for supporting semi-independent DRX groups according to aspects of the present disclosure. As described herein, the operations of the method 2000 may be implemented by the base station 105 or a component thereof. For example, the operations of the method 2000 may be implemented by the base station 105 or a component thereof as described in reference to FIG2 . Figures 10 to 13 In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0245] At 2005, the base station may send a first DRX configuration associated with a first DRX operation, wherein the first DRX operation is for CA communication with the UE via a primary group of CCs. The operations of 2005 may be performed according to the methods described herein. In some examples, aspects of the operations of 2005 may be as described in reference to Figures 10 to 13 The first DRX configuration component is described to perform.

[0246] At 2010, the base station may send a second DRX configuration associated with a second DRX operation, wherein the second DRX operation is for performing CA communications with the UE via a secondary group of CCs. The operations of 2010 may be performed according to the methods described herein. In some examples, aspects of the operations of 2010 may be as described in reference to Figures 10 to 13 The second DRX configuration component described is performed.

[0247] At 2015, the base station may send an indication of the CC to be included in the primary group, the CC to be included in the secondary group, or a combination thereof via high layer signaling. The operations of 2015 may be performed according to the methods described herein. In some examples, aspects of the operations of 2015 may be performed as described in reference to Figures 10 to 13 This is done using the CC configuration indicators described in

[15] .

[0248] At 2020, the base station may operate in a first DRX operation and a second DRX operation according to a DRX coupling rule, wherein, according to the DRX coupling rule, a first activation state of the first DRX operation is determined based on a second activation state of the second DRX operation, the second activation state is determined based on the first activation state, or both. The operations of 2020 may be performed according to the methods described herein. In some examples, aspects of the operations of 2020 may be performed as described in reference to Figures 10 to 13 The multiple DRX operation components described are performed.

[0249] It should be noted that the methods described herein describe possible implementations, and that operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Further, aspects of two or more methods may be combined.

[0250] The following provides an overview of various aspects of the disclosure:

[0251] Aspect 1: A method for wireless communication at a UE, comprising: receiving a first discontinuous reception configuration associated with a first discontinuous reception operation, wherein the first discontinuous reception operation is used to perform carrier aggregation communication with a base station through a primary group of component carriers; receiving a second discontinuous reception configuration associated with a second discontinuous reception operation, wherein the second discontinuous reception operation is used to perform carrier aggregation communication with the base station through a secondary group of component carriers; and operating the UE in the first discontinuous reception operation and the second discontinuous reception operation according to a discontinuous reception coupling rule, wherein, according to the discontinuous reception coupling rule, a first activation state of the first discontinuous reception operation is determined at least in part based on a second activation state of the second discontinuous reception operation, the second activation state is determined at least in part based on the first activation state, or both.

[0252] Aspect 2: The method according to Aspect 1 further includes: receiving a downlink signal from a base station on one or more component carriers of a secondary group during a second activation state of a second discontinuous reception operation; and determining to start or restart a first inactivity timer of the primary group and a second inactivity timer of the secondary group based at least in part on receiving a downlink signal on one or more component carriers of the secondary group according to a discontinuous reception coupling rule.

[0253] Aspect 3: The method according to aspect 2, wherein the downlink signal comprises a physical downlink control channel, the physical downlink control channel indicating new data transmission on a downlink shared channel or an uplink shared channel.

[0254] Aspect 4: The method according to any one of Aspects 1 to 3 further includes: receiving a downlink signal from a base station on one or more component carriers of a primary group during a first activation state of a first discontinuous reception operation; and determining to start or restart a first inactivity timer of the primary group based at least in part on receiving the downlink signal on one or more component carriers of the primary group, wherein a second inactivity timer of the secondary group is not started or restarted after the downlink signal is received on one or more component carriers of the primary group.

[0255] Aspect 5: The method according to aspect 4, wherein the downlink signal comprises a physical downlink control channel, the physical downlink control channel indicating new data transmission on a downlink shared channel or an uplink shared channel.

[0256] Aspect 6: A method according to any one of aspects 1 to 5, wherein the discontinuous reception coupling rule includes: determining that a timer associated with the first activation state, the second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained at least in part based on the timer being running for each of the primary group and the secondary group.

[0257] Aspect 7: The method according to Aspect 6 further includes: determining that the first activation state is maintained based at least in part on the fact that the timer for the second activation state is running, wherein the timer for the first activation state is not running under the same circumstances as the timer for the second activation state is running; avoiding monitoring downlink signals on the main group based at least in part on: determining that the first activation state is maintained based at least in part on the fact that the timer for the second activation state is running and the timer for the first activation state is not running; and sending an uplink signal on the main group based at least in part on: determining that the first activation state is maintained based at least in part on the fact that the timer for the second activation state is running and the timer for the first activation state is not running.

[0258] Aspect 8: A method according to any one of Aspects 6 to 7, wherein the timer associated with the first activation state, the second activation state, or both includes an on-duration timer, an inactivity timer, a downlink retransmission timer, an uplink retransmission timer, a contention resolution timer, or a combination thereof.

[0259] Aspect 9: The method according to any one of Aspects 1 to 8 further includes: sending a scheduling request to the base station in an uplink control channel; and determining to maintain the first activation state during the pending duration of the scheduling request, the pending duration including the duration for the UE to wait for a downlink control channel from the base station in response to the scheduling request.

[0260] Aspect 10: The method of aspect 9, wherein the scheduling request is sent on one or more component carriers of the primary group, one or more component carriers of the secondary group, or a combination thereof.

[0261] Aspect 11: The method according to any one of Aspects 1 to 10 further includes: determining that a downlink control channel indicating that a transmission of a cell radio network temporary identifier of a medium access control entity addressed to the UE has not been received on a component carrier of the primary group or the secondary group, wherein the first activation state is maintained at least in part based on the downlink control channel not being received.

[0262] Aspect 12: The method according to aspect 11, wherein the downlink control channel is expected to be received when a random access response message is received as part of a random access procedure.

[0263] Aspect 13: The method according to any one of aspects 1 to 12 further includes: determining that the first activation state of the first discontinuous reception operation has expired; and stopping the second activation state of the second discontinuous reception operation based at least in part on the expiration of the first activation state.

[0264] Aspect 14: The method according to any one of aspects 1 to 13 further includes: determining a discontinuous reception short cycle in which the first discontinuous reception configuration, the second discontinuous reception configuration, or both include the first discontinuous reception operation, the second discontinuous reception operation, or both.

[0265] Aspect 15: The method according to aspect 14, wherein a first activation state of a first discontinuous reception operation associated with a discontinuous reception short cycle is independent of a second activation state of a second discontinuous reception operation associated with a discontinuous reception short cycle.

[0266] Aspect 16: The method according to any one of aspects 14 to 15, wherein configuration of a discontinuous reception short cycle of the second discontinuous reception operation is ignored or prohibited.

[0267] Aspect 17: The method according to any one of aspects 1 to 16, wherein the first discontinuous reception configuration, the second discontinuous reception configuration, or both are received via higher layer signaling.

[0268] Aspect 18: The method according to any one of aspects 1 to 17, further comprising: receiving an indication of component carriers to be included in the primary group, component carriers to be included in the secondary group, or a combination thereof via higher layer signaling.

[0269] Aspect 19: The method according to any one of aspects 1 to 18, wherein the primary group comprises a primary discontinuous reception group, and the secondary group comprises a secondary discontinuous reception group.

[0270] Aspect 20: A method according to any one of Aspects 1 to 19, wherein the first discontinuous reception configuration, the second discontinuous reception configuration, or both include a connection mode discontinuous reception configuration for carrier aggregation communication across the component carriers of the primary group and the component carriers of the secondary group as defined by the media access control entity.

[0271] Aspect 21: The method according to any one of aspects 1 to 20, wherein the component carriers of the primary group and the component carriers of the secondary group are in the same or different frequency ranges, have the same or different parameter sets, or a combination thereof.

[0272] Aspect 22: A method for performing wireless communications at a base station, comprising: sending a first discontinuous reception configuration associated with a first discontinuous reception operation, wherein the first discontinuous reception operation is used to perform carrier aggregation communications with a UE via a primary group of component carriers; sending a second discontinuous reception configuration associated with a second discontinuous reception operation, wherein the second discontinuous reception operation is used to perform carrier aggregation communications with the UE via a secondary group of component carriers; and operating the base station in the first discontinuous reception operation and the second discontinuous reception operation according to a discontinuous reception coupling rule, wherein, according to the discontinuous reception coupling rule, a first activation state of the first discontinuous reception operation is determined at least in part based on a second activation state of the second discontinuous reception operation, the second activation state is determined at least in part based on the first activation state, or both.

[0273] Aspect 23: The method according to Aspect 22 further includes: sending a downlink signal to the UE on one or more component carriers of the secondary group during a second activation state of the second discontinuous reception operation; and determining to start or restart the first inactivity timer of the primary group and the second inactivity timer of the secondary group based at least in part on sending the downlink signal on one or more component carriers of the secondary group according to the discontinuous reception coupling rule.

[0274] Aspect 24: The method according to aspect 23, wherein the downlink signal comprises a physical downlink control channel, the physical downlink control channel indicating a new data transmission on a downlink shared channel or an uplink shared channel.

[0275] Aspect 25: The method according to any one of Aspects 22 to 24 further includes: sending a downlink signal to the UE on one or more component carriers of the primary group during a first activation state of the first discontinuous reception operation; and determining to start or restart a first inactivity timer of the primary group based at least in part on sending a downlink signal on one or more component carriers of the primary group, wherein a second inactivity timer of the secondary group is not started or restarted after the downlink signal is received on one or more component carriers of the primary group.

[0276] Aspect 26: The method according to aspect 25, wherein the downlink signal comprises a physical downlink control channel, the physical downlink control channel indicating a new data transmission on a downlink shared channel or an uplink shared channel.

[0277] Aspect 27: A method according to any one of Aspects 22 to 26, wherein the discontinuous reception coupling rule includes: determining that a timer associated with the first activation state, the second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained at least in part based on the timer being running for each of the primary group and the secondary group.

[0278] Aspect 28: A method according to Aspect 27, wherein the timer associated with the first activation state, the second activation state, or both includes an on-duration timer, an inactivity timer, a downlink retransmission timer, an uplink retransmission timer, a contention resolution timer, or a combination thereof.

[0279] Aspect 29: The method according to any one of Aspects 22 to 28 further includes: receiving a scheduling request from the UE in an uplink control channel; and determining to maintain the first activation state during the pending duration of the scheduling request, the pending duration including the duration for the UE to wait for a downlink control channel from the base station in response to the scheduling request.

[0280] Aspect 30: The method of aspect 29, wherein the scheduling request is received on one or more component carriers of a primary set, one or more component carriers of a secondary set, or a combination thereof.

[0281] Aspect 31: The method according to any one of aspects 22 to 30 further includes: avoiding sending a downlink control channel, the downlink control channel indicating the transmission of a cell radio network temporary identifier of a medium access control entity addressed to the UE, wherein the first activation state is maintained at least in part based on the downlink control channel not being sent.

[0282] Aspect 32: The method according to aspect 31, wherein the downlink control channel is expected to be sent after receiving a random access response message as part of a random access procedure.

[0283] Aspect 33: The method according to any one of aspects 22 to 32 further includes: determining that a first activation state of the first discontinuous reception operation has expired; and stopping the second activation state of the second discontinuous reception operation based at least in part on the expiration of the first activation state.

[0284] Aspect 34: The method according to any one of aspects 22 to 33 further comprises: determining a discontinuous reception short cycle in which the first discontinuous reception configuration, the second discontinuous reception configuration, or both include the first discontinuous reception operation, the second discontinuous reception operation, or both.

[0285] Aspect 35: The method according to aspect 34, wherein a first activation state of a first discontinuous reception operation associated with a discontinuous reception short cycle is independent of a second activation state of a second discontinuous reception operation associated with a discontinuous reception short cycle.

[0286] Aspect 36: The method according to any one of aspects 34 to 35, wherein configuration of a discontinuous reception short cycle of the second discontinuous reception operation is ignored or prohibited.

[0287] Aspect 37: The method according to any one of aspects 22 to 36, wherein the first discontinuous reception configuration, the second discontinuous reception configuration, or both are sent via higher layer signaling.

[0288] Aspect 38: The method according to any one of aspects 22 to 37, further comprising: sending an indication of the component carriers to be included in the primary group, the component carriers to be included in the secondary group, or a combination thereof via higher layer signaling.

[0289] Aspect 39: The method according to any one of aspects 22 to 38, wherein the primary group comprises a primary discontinuous reception group, and the secondary group comprises a secondary discontinuous reception group.

[0290] Aspect 40: A method according to any one of aspects 22 to 39, wherein the first discontinuous reception configuration, the second discontinuous reception configuration, or both include a connection mode discontinuous reception configuration for carrier aggregation communication across the component carriers of the primary group and the component carriers of the secondary group as defined by the media access control entity.

[0291] Aspect 41: The method according to any one of aspects 22 to 40, wherein the component carriers of the primary group and the component carriers of the secondary group are in the same or different frequency ranges, have the same or different parameter sets, or a combination thereof.

[0292] Aspect 42: An apparatus for wireless communication at a UE, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to any one of aspects 1 to 21.

[0293] Aspect 43: An apparatus for wireless communication at a UE, comprising at least one component for performing the method according to any one of aspects 1 to 21.

[0294] Aspect 44: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 1 to 21.

[0295] Aspect 45: An apparatus for wireless communication at a base station, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to any one of aspects 22 to 41.

[0296] Aspect 46: An apparatus for wireless communication at a base station, comprising at least one means for performing the method according to any one of aspects 22 to 41.

[0297] Aspect 47: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform the method of any one of aspects 22 to 41.

[0298] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and the terminology of LTE, LTE-A, LTE-A Pro, or NR may be used throughout much of the description, the techniques described herein can be applied beyond 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 not explicitly mentioned herein.

[0299] The information and signals described herein may be represented using any of a variety of technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0300] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed with a general purpose processor, a DSP, an ASIC, a CPU, 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. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0301] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored in 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 a processor, hardware, firmware, hardwiring, or any combination thereof. Features that implement the functions may also be physically located in different locations, including being distributed so that portions of the functions are implemented in different physical locations.

[0302] Computer-readable media include non-transitory computer storage media and communication media, and communication media include any medium that is convenient for transmitting a computer program from one place to another. Non-transitory storage media can be any available medium that a general or special-purpose computer can access. As an example and not limitation, non-transitory computer-readable media can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage device, or can be used to carry or store desired program code components in the form of instructions or data structures and any other non-transitory medium that can be accessed by a general or special-purpose computer or a general or special-purpose processor. In addition, any connection is properly referred to as a computer-readable medium. For example, if the software is sent from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology (such as infrared, radio and microwave), then the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology (such as infrared, radio and microwave) are all included in the definition of computer-readable media. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0303] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items beginning with a phrase such as "at least one of" or "one or more of") means an inclusive list so that, for example, a list of at least one of A, B, or C refers to A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could be based on condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0304] In the drawings, similar components or features may have the same reference number. Furthermore, various components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes between the similar components. If only the first reference number is used in the specification, the description applies to any similar component having the same first reference number, regardless of the second or subsequent reference numbers.

[0305] The description set forth herein, in conjunction with the accompanying drawings, describes example configurations and does not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," rather than "preferred" or "superior to other examples." The detailed description includes specific details to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0306] The description herein is provided to enable one of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present 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. A method for wireless communication at a user equipment (UE), comprising: receiving a first discontinuous reception configuration associated with a first discontinuous reception operation for carrier aggregation communication with a base station over a primary set of component carriers; receiving a second discontinuous reception configuration associated with a second discontinuous reception operation for performing the carrier aggregation communication with the base station over a secondary group of component carriers; and operating the UE in the first discontinuous reception operation and the second discontinuous reception operation according to a discontinuous reception coupling rule, wherein, according to the discontinuous reception coupling rule, a first activation state of the first discontinuous reception operation is determined at least in part based on a second activation state of the second discontinuous reception operation, the second activation state is determined at least in part based on the first activation state, or both; The discontinuous reception coupling rule includes: unless the first activation state and the second activation state are maintained at the same time, the second activation state is not maintained.

2. The method according to claim 1, further comprising: receiving, during the second activation state of the second discontinuous reception operation, downlink signals from the base station on one or more component carriers of the secondary group; as well as Determining to start or restart a first inactivity timer for the primary group and a second inactivity timer for the secondary group is based at least in part on receiving the downlink signal on the one or more component carriers of the secondary group according to the discontinuous reception coupling rule.

3. The method according to claim 2, wherein: The downlink signal comprises a physical downlink control channel indicating a new data transmission on a downlink shared channel or an uplink shared channel.

4. The method according to claim 1, further comprising: receiving, during the first activation state of the first discontinuous reception operation, downlink signals from the base station on one or more component carriers of the primary set; as well as Determining to start or restart a first inactivity timer for the primary group is based at least in part on receiving the downlink signal on the one or more component carriers of the primary group, wherein a second inactivity timer for the secondary group is not started or restarted after the downlink signal is received on the one or more component carriers of the primary group.

5. The method according to claim 4, wherein The downlink signal comprises a physical downlink control channel indicating a new data transmission on a downlink shared channel or an uplink shared channel.

6. The method according to claim 1, wherein The discontinuous reception coupling rule includes: Determining that a timer associated with the first activation state, the second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained based at least in part on the timer being running for each of the primary group and the secondary group.

7. The method according to claim 6, further comprising: determining that the first activation state is maintained based at least in part on the timer for the second activation state being running, wherein the timer for the first activation state is not running under the same circumstances as the timer for the second activation state is running; refraining from monitoring downlink signals on the primary group based at least in part on determining that the first activation state is maintained based at least in part on the timer for the second activation state being running and the timer for the first activation state not being running; and An uplink signal is sent on the primary group based at least in part on determining that the first activation state is maintained based at least in part on the timer for the second activation state being running and the timer for the first activation state not being running.

8. The method according to claim 6, wherein: The timers associated with the first activation state, the second activation state, or both include an on-duration timer, an inactivity timer, a downlink retransmission timer, an uplink retransmission timer, a contention resolution timer, or a combination thereof.

9. The method according to claim 1, further comprising: sending a scheduling request to the base station in an uplink control channel; as well as Determining to maintain the first activation state during a pending duration of the scheduling request, the pending duration comprising a duration for the UE to wait for a downlink control channel from the base station in response to the scheduling request.

10. The method according to claim 9, wherein: The scheduling request is sent on one or more component carriers of the primary group, one or more component carriers of the secondary group, or a combination thereof.

11. The method according to claim 1 , further comprising: determining a downlink control channel indicating that a transmission of a cell radio network temporary identifier addressed to a medium access control entity of the UE has not been received on one or more component carriers of the primary group or the secondary group, wherein the first activation state is maintained based at least in part on the downlink control channel not being received.

12. The method according to claim 11, wherein The downlink control channel is expected to be received after receiving a random access response message as part of a random access procedure.

13. The method according to claim 1, further comprising: determining that the first activation state of the first discontinuous reception operation has expired; as well as The second activation state of the second discontinuous reception operation is discontinued based at least in part on expiration of the first activation state.

14. The method according to claim 1, further comprising: Determining the first discontinuous reception configuration, the second discontinuous reception configuration, or both includes a discontinuous reception short cycle of the first discontinuous reception operation, the second discontinuous reception operation, or both.

15. The method according to claim 14, wherein The first activation state of the first DRX operation associated with the DRX short cycle is independent of the second activation state of the second DRX operation associated with the DRX short cycle.

16. The method according to claim 14, wherein The configuration of the DRX short cycle of the second DRX operation is ignored or prohibited.

17. The method according to claim 1, wherein The first discontinuous reception configuration, the second discontinuous reception configuration, or both are received via higher layer signaling.

18. The method of claim 1, further comprising: An indication of one or more component carriers to be included in the primary group, one or more component carriers to be included in the secondary group, or a combination thereof is received via higher layer signaling.

19. The method according to claim 1, wherein The primary group comprises a primary discontinuous reception group, and the secondary group comprises a secondary discontinuous reception group.

20. The method according to claim 1, wherein The first discontinuous reception configuration, the second discontinuous reception configuration, or both include a connected mode discontinuous reception configuration for the carrier aggregation communication as defined by a media access control entity across one or more component carriers of the primary group and one or more component carriers of the secondary group.

21. The method according to claim 1, wherein The one or more component carriers of the primary group and the one or more component carriers of the secondary group are in the same or different frequency ranges, have the same or different parameter sets, or a combination thereof.

22. An apparatus for performing wireless communication at a user equipment (UE), comprising: means for receiving a first discontinuous reception configuration associated with a first discontinuous reception operation for carrier aggregation communications with a base station over a primary set of component carriers; means for receiving a second discontinuous reception configuration associated with a second discontinuous reception operation for conducting the carrier aggregation communication with the base station over a secondary set of component carriers; and means for operating the UE in the first discontinuous reception operation and the second discontinuous reception operation according to a discontinuous reception coupling rule, wherein, according to the discontinuous reception coupling rule, a first activation state of the first discontinuous reception operation is determined at least in part based on a second activation state of the second discontinuous reception operation, the second activation state is determined at least in part based on the first activation state, or both, The discontinuous reception coupling rule includes: unless the first activation state and the second activation state are maintained at the same time, the second activation state is not maintained.

23. The apparatus according to claim 22, further comprising: means for receiving downlink signals from the base station on one or more component carriers of the secondary set during the second activation state of the second discontinuous reception operation; as well as means for determining to start or restart a first inactivity timer for the primary group and a second inactivity timer for the secondary group based at least in part on the downlink signal being received on the one or more component carriers of the secondary group in accordance with the discontinuous reception coupling rule.

24. The device according to claim 23, wherein The downlink signal comprises a physical downlink control channel indicating a new data transmission on a downlink shared channel or an uplink shared channel.

25. The apparatus of claim 22, further comprising: means for receiving downlink signals from the base station on one or more component carriers of the primary set during the first activation state of the first discontinuous reception operation; as well as and means for determining to start or restart a first inactivity timer for the primary group based at least in part on the downlink signal being received on the one or more component carriers of the primary group, wherein a second inactivity timer for the secondary group is configured not to be started or restarted after the downlink signal is received on the one or more component carriers of the primary group.

26. The device according to claim 25, wherein The downlink signal comprises a physical downlink control channel indicating a new data transmission on a downlink shared channel or an uplink shared channel.

27. The apparatus according to claim 22, wherein The discontinuous reception coupling rule includes: Determining that a timer associated with the first activation state, the second activation state, or both is running for each of the primary group and the secondary group, wherein the first activation state is maintained based at least in part on the timer being running for each of the primary group and the secondary group.

28. The apparatus according to claim 27, further comprising: means for determining that the first activation state is maintained based at least in part on the timer for the second activation state being running, wherein the timer for the first activation state is not running under the same circumstances as the timer for the second activation state being running; means for refraining from monitoring downlink signals on the primary group based at least in part on: determining that the first activation state is maintained based at least in part on the timer for the second activation state being running and the timer for the first activation state not being running; and Means for sending an uplink signal on the primary group based at least in part on determining that the first activation state is maintained based at least in part on the timer for the second activation state being running and the timer for the first activation state not being running.

29. An apparatus for performing wireless communication at a user equipment (UE), comprising: processor, a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: receiving a first discontinuous reception configuration associated with a first discontinuous reception operation for carrier aggregation communication with a base station over a primary set of component carriers; receiving a second discontinuous reception configuration associated with a second discontinuous reception operation for performing the carrier aggregation communication with the base station over a secondary group of component carriers; and operating the UE in the first discontinuous reception operation and the second discontinuous reception operation according to a discontinuous reception coupling rule, wherein, according to the discontinuous reception coupling rule, a first activation state of the first discontinuous reception operation is determined at least in part based on a second activation state of the second discontinuous reception operation, the second activation state is determined at least in part based on the first activation state, or both; The discontinuous reception coupling rule includes: unless the first activation state and the second activation state are maintained at the same time, the second activation state is not maintained.

30. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to: receiving a first discontinuous reception configuration associated with a first discontinuous reception operation, wherein: The first discontinuous reception operation is used to perform carrier aggregation communication with a base station via a primary group of component carriers; receiving a second discontinuous reception configuration associated with a second discontinuous reception operation for performing the carrier aggregation communication with the base station over a secondary group of component carriers; and operating the UE in the first discontinuous reception operation and the second discontinuous reception operation according to a discontinuous reception coupling rule, wherein, according to the discontinuous reception coupling rule, a first activation state of the first discontinuous reception operation is determined at least in part based on a second activation state of the second discontinuous reception operation, the second activation state is determined at least in part based on the first activation state, or both; The discontinuous reception coupling rule includes: unless the first activation state and the second activation state are maintained at the same time, the second activation state is not maintained.

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