Methods and apparatus for improved connected mode discontinuous reception

Abstract

Techniques for wireless communications are described. A base station can indicate, to a UE, whether the base station will transmit a grant to the UE in a pre-wakeup period. The pre-wakeup period can occur at the beginning of a DRX cycle. The base station can transmit an indication of a grant to the UE, and the base station can indicate a period of time during which the UE can wake up to receive the grant. The indication can include scheduling information for the grant. The UE can select a DRX mode based on a configuration received from the base station, a traffic pattern, or a scheduling history. The UE can monitor for the grant and receive the grant. In other examples, the UE or the base station can identify that the grant is not received, and can reset a DRX cycle based on the identification.

Description

[0001] This is a Divisional Application of PCT National Stage Patent Application Serial No. 201780066673.9, entitled "Wake-up Techniques for Improved Connected Mode Discontinuous Reception," having an international filing date of October 13, 2017, which claims priority to U.S. Provisional Patent Application Serial No. 62 / 546, 1 10, filed August 14, 2017, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The following relates generally to wireless communications, and more specifically to wake-up techniques for improved connected mode discontinuous reception. BACKGROUND

[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems can be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple- access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, and orthogonal frequency division multiple access (OFDMA) systems, e.g., a Long Term Evolution (LTE) system, or a New Radio (NR) system. A wireless multiple-access communications system can include a number of base stations or access network nodes, each simultaneously supporting communication for multiple communication devices, which can be otherwise known as user equipment (UE).

[0004] A UE operating in a discontinuous reception (DRX) mode can wake up at the beginning of each DRX cycle to check for grants received from a base station, e.g., in a downlink control region of a downlink transmission. The UE can wake up to check for downlink messages even if the base station does not send a grant to the UE. The UE can remain awake during portions of the DRX cycle even if no grant has been received. UE wake-up and return to sleep, or unnecessarily remaining awake, can result in power waste and poor battery performance. SUMMARY

[0005] A method of wireless communication is described. The method can include identifying that a buffer contains data for transmission to a UE, transmitting, to the UE, an indication that a resource grant will subsequently be transmitted to the UE based at least in part on the identifying, and transmitting, to the UE, the resource grant after the transmission of the indication while the UE is in a discontinuous reception state.

[0006] An apparatus for wireless communication is described. The apparatus can include means for identifying that a buffer contains data for transmission to a UE, means for transmitting, to the UE, an indication that a resource grant will subsequently be transmitted to the UE based at least in part on the identifying, and means for transmitting, to the UE, the resource grant after the transmission of the indication while the UE is in a discontinuous reception state.

[0007] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are operable to cause the processor to: identify a buffer containing data for transmission to a UE; transmit to the UE, at least in part, an indication that resource granting will subsequently be transmitted to the UE, based on the identifier; and, after the transmission of the indication, transmit the resource granting to the UE when the UE is in a discontinuous reception state.

[0008] A non-transient computer-readable medium for wireless communication is described. The non-transient computer-readable medium may include instructions operable to cause a processor to perform the following operations: an identifier buffer containing data for transmission to a UE; transmitting to the UE, at least in part, an indication that resource granting will subsequently be transmitted to the UE, based on the identifier; and transmitting the resource granting to the UE after the transmission of the indication, when the UE is in a discontinuous reception state.

[0009] In some examples of the methods, apparatuses, and non-transient computer-readable media described above, an instruction regarding the subsequent transmission of the resource grant to the UE, and the resource grant itself, can be transmitted during the same discontinuous reception cycle.

[0010] Some examples of the methods, apparatuses, and non-transient computer-readable media described above may further include procedures, features, means, or instructions for determining whether to schedule the UE during a discontinuous reception cycle. Some examples of the methods, apparatuses, and non-transient computer-readable media described above may further include procedures, features, means, or instructions wherein the indication indicates that the UE may be woken up for a duration of time.

[0011] Some examples of the methods, apparatuses, and non-transient computer-readable media described above may further include procedures, features, means, or instructions for determining to schedule the UE during a discontinuous reception cycle. Some examples of the methods, apparatuses, and non-transient computer-readable media described above may further include procedures, features, means, or instructions wherein the instruction instructs the UE to wake up to listen for the time granted by the resource.

[0012] In some examples of the methods, apparatus, and non-transient computer-readable media described above, the indication indicates that the UE may be woken up for a period of time.

[0013] Some examples of the method, apparatuses, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for determining a discontinuous reception pattern for the UE to use for receiving transmissions from the base station. Some examples of the method, apparatuses, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for transmitting, to the UE, a mode indicator indicating the determined discontinuous reception pattern.

[0014] Some examples of the method, apparatuses, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for identifying a group of UEs from among a plurality of UEs. Some examples of the method, apparatuses, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for transmitting a group indication that one or more resource grants will be transmitted for the identified group of UEs.

[0015] Some examples of the method, apparatuses, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for identifying that the group of UEs can be based at least in part on an amount of data for transmission associated with respective buffers associated with each UE in the group of UEs.

[0016] Some examples of the method, apparatuses, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for transmitting, in a starting subframe of a discontinuous reception cycle, an indication that a resource grant will be transmitted to the UE.

[0017] Another method of wireless communication is described. The method can include receiving, from a base station, an indication that a resource grant will be transmitted to the UE by the base station while the UE is in a discontinuous reception state, monitoring for the resource grant based at least in part on receiving the indication that the resource grant will be transmitted, and receiving the resource grant from the base station.

[0018] Another apparatus for wireless communication is described. The apparatus can include means for receiving, from a base station, an indication that a resource grant will be transmitted to the UE by the base station while the UE is in a discontinuous reception state, means for monitoring for the resource grant based at least in part on receiving the indication that the resource grant will be transmitted, and means for receiving the resource grant from the base station.

[0019] Another apparatus for wireless communication is described. The apparatus can include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions can be operable to cause the processor to receive, from a base station, an indication that a resource grant is to be transmitted by the base station to the UE while the UE is in a discontinuous reception state, and monitor for the resource grant based at least in part on receiving the indication that the resource grant is to be transmitted.

[0020] Another non-transitory computer-readable medium for wireless communication is described. The non-transitory computer-readable medium can include instructions operable to cause a processor to receive, from a base station, an indication that a resource grant is to be transmitted by the base station to the UE while the UE is in a discontinuous reception state, and monitor for the resource grant based at least in part on receiving the indication that the resource grant is to be transmitted.

[0021] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the indication that the resource grant is to be transmitted by the base station and the resource grant can be received during a same discontinuous reception cycle.

[0022] Some examples of the method, apparatus, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for entering an on state of the discontinuous reception state based at least in part on the received indication that the resource grant is to be transmitted, or identifying that there is data to be transmitted on a downlink or uplink, or a combination thereof. Some examples of the method, apparatus, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for monitoring for the indicated resource grant during the on state.

[0023] Some examples of the method, apparatus, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for receiving the resource grant. Some examples of the method, apparatus, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for resetting a discontinuous reception inactivity timer based at least in part on receiving the resource grant.

[0024] Some examples of the method, apparatus, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for resetting a discontinuous reception cycle timer based at least in part on receiving the indication that the resource grant is to be transmitted, or identifying that there is data to be transmitted on a downlink or uplink, or a combination thereof.

[0025] Some examples of the method, apparatuses, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for switching between the second discontinuous reception mode and the first discontinuous reception mode associated with the discontinuous reception state.

[0026] Some examples of the method, apparatuses, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for identifying a traffic mode of the UE. Some examples of the method, apparatuses, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for switching between the first discontinuous reception mode and the second discontinuous reception mode based at least in part on the identified traffic mode.

[0027] Another method of wireless communication is described. The method can include identifying that a buffer contains data for transmission to a UE, transmitting, to the UE, an indication that a resource grant will be subsequently transmitted to the UE based at least in part on the identifying, and resetting a discontinuous reception cycle timer based at least in part on identifying that the UE did not receive the resource grant indicated by the transmitted indication.

[0028] Another apparatus for wireless communication is described. The apparatus can include means for identifying that a buffer contains data for transmission to a UE, means for transmitting, to the UE, an indication that a resource grant will be subsequently transmitted to the UE based at least in part on the identifying, and means for resetting a discontinuous reception cycle timer based at least in part on identifying that the UE did not receive the resource grant indicated by the transmitted indication.

[0029] Another apparatus for wireless communication is described. The apparatus can include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions can be operable to cause the processor to identify that a buffer contains data for transmission to a UE, transmit, to the UE, an indication that a resource grant will be subsequently transmitted to the UE based at least in part on the identifying, and reset a discontinuous reception cycle timer based at least in part on identifying that the UE did not receive the resource grant indicated by the transmitted indication.

[0030] Another apparatus for wireless communication is described. The apparatus can include a processor, memory in electronic communication with the processor, and instructions stored in the memory. The instructions can be operable to cause the processor to identify that a buffer contains data for transmission to a UE, transmit, to the UE, an indication that a resource grant will be subsequently transmitted to the UE based at least in part on the identifying, and reset a discontinuous reception cycle timer based at least in part on identifying that the UE did not receive the resource grant indicated by the transmitted indication.

[0031] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, resetting the discontinuous reception cycle timer further includes initiating a short discontinuous reception cycle based at least in part on identifying that the UE did not receive the resource grant indicated by the transmitted indication.

[0032] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, resetting the discontinuous reception cycle timer further includes initiating a long discontinuous reception cycle based at least in part on identifying that the UE did not receive the resource grant indicated by the transmitted indication.

[0033] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, identifying that the UE did not receive the resource grant indicated by the transmitted indication includes identifying at the base station that the base station did not transmit the resource grant indicated by the transmitted indication.

[0034] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, identifying that the UE did not receive the resource grant indicated by the transmitted indication includes receiving an indication from the UE that the UE did not receive the resource grant indicated by the transmitted indication.

[0035] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the indication indicating that the resource grant will be transmitted to the UE can be transmitted during a same discontinuous reception cycle as the indication that the resource grant will be subsequently transmitted to the UE.

[0036] In some examples of the method, apparatus, and non-transitory computer-readable medium described above, the indication indicates that the UE can wake up for a time duration.

[0037] Some examples of the method, apparatus, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for determining a discontinuous reception pattern for a UE to use for receiving transmissions from a base station. Some examples of the method, apparatus, and non-transitory computer-readable medium described above can further include processes, features, means, or instructions for transmitting a mode indicator to the UE indicating the determined discontinuous reception pattern.

[0038] Another wireless communication method is described. The method may include: receiving from a base station an indication that a resource grant will be transmitted to the UE by the base station when the UE is in a discontinuous reception state; monitoring the resource grant at least in part based on the received indication that the resource grant will be transmitted; identifying that the UE has not received the resource grant indicated by the received indication; and resetting the discontinuous reception cycle timer at least in part based on the identification.

[0039] Another apparatus for wireless communication is described. The apparatus may include: means for receiving from a base station an indication that resource permission will be transmitted from the base station to the UE when the UE is in a discontinuous reception state; means for monitoring the resource permission at least in part based on the received indication that the resource permission will be transmitted; means for identifying that the UE has not received the resource permission indicated by the received indication; and means for resetting a discontinuous reception cyclic timer at least in part based on the identification.

[0040] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are operable to cause the processor to: receive from a base station an indication that resource grants will be transmitted to the UE by the base station when the UE is in a discontinuous reception state; monitor the resource grant at least in part based on the received indication that the resource grants will be transmitted; identify that the UE has not received the resource grant indicated by the received indication; and reset the discontinuous reception cycle timer at least in part based on the identification.

[0041] Another non-transient computer-readable medium for wireless communication is described. This non-transient computer-readable medium may include instructions operable to cause a processor to perform the following operations: receiving from a base station an indication that a resource grant will be transmitted to the UE by the base station when the UE is in a discontinuous reception state; monitoring the resource grant at least in part based on the received indication that the resource grant will be transmitted; identifying that the UE has not received the resource grant indicated by the received indication; and resetting the discontinuous reception cycle timer at least in part based on the identification.

[0042] In some examples of the methods, apparatus, and non-transient computer-readable media described above, resetting the discontinuous reception cycle timer further includes initiating a short discontinuous reception cycle based at least in part on the identifier.

[0043] In some examples of the methods, apparatus, and non-transient computer-readable media described above, resetting the discontinuous reception cycle timer further includes initiating a long discontinuous reception cycle based at least in part on the identifier.

[0044] Some examples of the methods, apparatuses, and non-transient computer-readable media described above may further include processes, features, means, or instructions for identifying the traffic mode of the UE. Some examples of the methods, apparatuses, and non-transient computer-readable media described above may further include processes, features, means, or instructions for switching between a second discontinuous reception mode and a first discontinuous reception mode associated with the discontinuous reception state, at least in part based on the identified traffic mode.

[0045] Some examples of the methods, apparatuses, and non-transient computer-readable media described above may further include processes, features, means, or instructions for determining that a base station transmitted data to the UE according to a first discontinuous reception mode during a previous discontinuous reception cycle. Some examples of the methods, apparatuses, and non-transient computer-readable media described above may further include processes, features, means, or instructions for operating in the first discontinuous reception mode in the current discontinuous reception cycle, at least in part based on that determination. Attached Figure Description

[0046] Figure 1 Examples of wireless communication systems supporting improved connected-mode discontinuous reception wake-up techniques according to one or more aspects of this disclosure are described.

[0047] Figure 2 Examples of wireless communication systems supporting improved connected-mode discontinuous reception wake-up techniques according to one or more aspects of this disclosure are described.

[0048] Figures 3 to 6 An example of a pre-wake-up permission indication communication flow according to one or more aspects of this disclosure is explained.

[0049] Figure 7 , 8 Figures 9 and 1 show process flow diagrams supporting wake-up techniques for improved connected-mode discontinuous reception according to one or more aspects of this disclosure.

[0050] Figures 10 to 12 A block diagram of a device supporting an improved connected-mode discontinuous reception wake-up technique is shown, according to one or more aspects of this disclosure.

[0051] Figure 13 A block diagram of a system including a base station supporting wake-up techniques for improved connectivity-mode discontinuous reception, according to one or more aspects of this disclosure, is described.

[0052] Figures 14 to 16A block diagram of a device supporting an improved connected-mode discontinuous reception wake-up technique is shown, according to one or more aspects of this disclosure.

[0053] Figure 17 A block diagram of a system including a UE supporting wake-up technology for improved connectivity-mode discontinuous reception, according to one or more aspects of this disclosure, is described.

[0054] Figures 18 to 25 A method for an improved connected-mode discontinuous reception wake-up technique according to one or more aspects of this disclosure is explained. Detailed Implementation

[0055] A UE operating in DRX mode can wake up at the beginning of each DRX cycle to check for permission from the base station. If the base station has already buffered data for the UE, it can indicate to the UE the resources already allocated by the base station for data transmission to the UE by transmitting permission to the UE at the beginning of the DRX cycle. Specifically, permission can be transmitted within the control area of ​​a subframe (such as in the UE's Physical Downlink Control Channel (PDCCH)) at the beginning of the DRX cycle. However, even if the base station does not transmit permission for the UE, the UE can still wake up at the beginning of each DRX cycle to check for such permission or remain in a wake-up state listening for such permission. In some situations, repeated wake-ups and sleep states or remaining awake during a DRX cycle without receiving permission can lead to inefficiencies, such as wasting the UE's power and energy.

[0056] Therefore, the base station can indicate to the UE during the pre-wake-up period whether it will transmit permission. The instruction to grant permission and the permission itself can occur within the same DRX cycle or in different DRX cycles. In some examples, the pre-wake-up period can occur at the beginning of a DRX cycle, which may begin during a portion of the first subframe of the DRX cycle. The base station can transmit the permission instruction to the UE, and the base station can indicate the time period during which the UE can receive the permission. In some examples, the instruction may include scheduling information about the permission (e.g., an explicit indication of exactly when the permission will be transmitted and / or in which resources), or the instruction may include the time period during which the UE can wake up to receive the permission.

[0057] In some examples, the base station may indicate permission to the UE during the wake-up period of a DRX cycle, but the base station may be unable to transmit the permission (e.g., due to excessive base station load). Therefore, in some examples, if the base station can transmit permission during a DRX cycle, then the base station may transmit the indication of permission. The UE may have a wake-up period at the beginning of a short DRX cycle and / or a long DRX cycle. In some cases, UE 115 may be configured to switch between short DRX cycles and long DRX cycles. In yet other examples, the UE and / or base station may switch between operation in a DRX mode (which uses the wake-up period as described above) and operation in one or more other DRX modes (e.g., one or more legacy DRX modes).

[0058] In some scenarios, the UE may receive an indication of grant during the wake-up period. The UE can then monitor the indicated resource grant and subsequently receive that grant during a DRX cycle. In other scenarios, however, the UE may receive an indication of grant during the wake-up period but may not receive the indicated grant. In such cases, the UE or base station may reset the DRX cycle timer based on an indication that the UE has not received the resource grant indicated by the transmitted indication. The UE or base station may initiate a short DRX cycle or a long DRX cycle after an indication that no grant has been received, for example, by moving into a short DRX cycle or returning to a long DRX cycle.

[0059] The aspects of this disclosure are initially described in the context of wireless communication systems. Further examples of different wake-up techniques for a UE operating in DRX mode using permission indication during a wake-up period are provided. The aspects of this disclosure are further illustrated and described by way of apparatus diagrams, system diagrams, and flowcharts relating to wake-up techniques for improved connectivity-mode discontinuous reception.

[0060] Figure 1 An example of a wireless communication system 100 supporting wake-up techniques for improved connected-mode discontinuous reception, according to various aspects of this disclosure, is described. The wireless communication system 100 includes a base station 105 (e.g., a gB node (gNB) and / or a radio headend (RH)), a UE 115, and a core network 130. The wireless communication system 100 may support pre-wake-up indications in DRX mode to allow for reduced power consumption.

[0061] Base station 105 can wirelessly communicate with UE 115 via one or more base station antennas. Each base station 105 can provide communication coverage for a corresponding geographic coverage area 110. The communication link 125 shown in the wireless communication system 100 can include uplink (UL) transmission from UE 115 to base station 105 or downlink (DL) transmission from base station 105 to UE 115. Control information and data can be multiplexed on the uplink channel or downlink according to various technologies. UE 115 can communicate with core network 130 via communication link 125. Each UE 115 can be distributed throughout the wireless communication system 100, and each UE 115 can be stationary or mobile.

[0062] Control information and data can be multiplexed on the downlink channel, for example using time division multiplexing (TDM), frequency division multiplexing (FDM), or a hybrid TDM-FDM technique. In some examples, control information transmitted during the transmission time interval (TTI) of the downlink channel can be distributed in a cascaded manner between different control regions (e.g., between a shared control region and one or more control regions that vary depending on the UE).

[0063] Each UE 115 can be distributed throughout the wireless communication system 100, and each UE 115 can be stationary or mobile. UE 115 may also be referred to as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. UE 115 can also be a cellular phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, tablet computer, laptop computer, cordless phone, personal electronic device, handheld device, personal computer, wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, machine-type communication (MTC) device, appliance, automobile, etc.

[0064] Each base station 105 can communicate with the core network 130 and with each other. For example, base station 105 can interface with the core network 130 via backhaul link 132 (e.g., S1, etc.). Base stations 105 can communicate with each other directly or indirectly (e.g., via the core network 130) on backhaul link 134 (e.g., X2, etc.). Base station 105 can perform radio configuration and scheduling for communication with UE 115, or can operate under the control of a base station controller (not shown). In some examples, base station 105 can be a macrocell, a small cell, a hotspot, etc. Base station 105 may also be referred to as an evolved B-node (eNB) 105.

[0065] Base station 105 can connect to core network 130 via the S1 interface. The core network can be an evolved packet core (EPC), which may include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one packet data network (PDN) gateway (P-GW). The MME can be the control node handling signaling between UE 115 and the EPC. All user Internet Protocol (IP) packets can be transmitted via the S-GW, which itself can connect to the P-GW. The P-GW provides IP address allocation and other functions. The P-GW can connect to network operator IP services. Operator IP services may include the Internet, intranets, IP Multimedia Subsystem (IMS), and Packet Switched (PS) Streaming Service (PSS).

[0066] Core network 130 can provide user authentication, access authorization, tracking, IP connectivity, and other access, routing, or mobility functions. At least some network devices (such as base station 105-a) may include sub-components, such as access network entity 105-b, which may be an example of an access node controller (ANC). Each access network entity 105-b can communicate with several UEs 115 through several other access network entities 105-c, each of which may be an example of a smart radio headend or a transmit / receive point (TRP). In some configurations, the various functions of each access network entity or base station 105 may be distributed across various network devices (e.g., radio headends and access network controllers) or combined into a single network device (e.g., base station 105).

[0067] In some scenarios, UE 115 may continuously monitor wireless communication link 125 for indications of data that UE 115 can receive. In other scenarios (e.g., to conserve power and extend battery life), UE 115 may be configured to operate using one or more DRX cycles. A DRX cycle includes an "on duration" when UE 115 can monitor (e.g., on the PDCCH) for control information and a "DRX period" when UE 115 can power down radio components. In some scenarios, UE 115 may be configured with both short and long DRX cycles. In some scenarios, UE 115 may enter a long DRX cycle if it is inactive for one or more short DRX cycles. The transition between short DRX cycles, long DRX cycles, and continuous reception may be controlled by an internal timer (e.g., internal to UE 115) or by message transmission and reception received from base station 105. UE 115 may receive scheduling messages on the PDCCH during the on duration. While monitoring the PDCCH for scheduling messages, UE 115 may initiate a DRX inactivity timer. If a scheduling message is successfully received, UE 115 can prepare to receive data and the DRX inactivity timer can be reset. When the DRX inactivity timer expires without receiving a scheduling message, UE 115 can move to a short DRX cycle and start a short DRX cycle timer. When the short DRX cycle timer expires, UE 115 can resume a long DRX cycle.

[0068] One or more of the base stations 105 may include a base station DRX manager 101, which may identify that the buffer of the base station 105 contains data for transmission to the UE 115. The base station DRX manager 101 may then transmit an indication regarding the subsequent transmission of resource grants to the UE based on the data in the identified buffer. After the indication regarding the transmission of grants, the base station DRX manager 101 may transmit the indicated resource grants while the UE is in DRX state. The resource grants may be transmitted in the same or a different DRX cycle as the indication of such grants.

[0069] UE 115 may include UE DRX manager 102, which may receive an indication that UE 115 will receive resource grant from base station 105 when UE 115 is in DRX state. UE DRX manager 102 may then monitor the resource grant based on the received indication of transmission. UE DRX manager 102 may receive the resource grant indication in the same or a different DRX cycle than the resource grant itself.

[0070] The wireless communication system 100 can operate in the ultra-high frequency (UHF) frequency band from 700 MHz to 2600 MHz (2.6 GHz), but in some cases, a wireless local area network (WLAN) can use frequencies up to 4 GHz. Because the wavelengths range from approximately 1 decimeter to 1 meter, this area is also referred to as the decimeter band. UHF waves can propagate primarily through the line of sight and can be blocked by buildings and environmental features. However, these waves can penetrate walls sufficiently to provide service to the UE 115 located indoors. Compared to transmissions using smaller frequencies (and longer waves) in the high frequency (HF) or very high frequency (VHF) portions of the spectrum, UHF wave transmission is characterized by smaller antennas and shorter ranges (e.g., less than 100 km). In some cases, the wireless communication system 100 can also utilize the extremely high frequency (EHF) portion of the spectrum (e.g., from 30 GHz to 300 GHz). Because the wavelengths range from approximately 1 millimeter to 1 centimeter, this area is also referred to as the millimeter band. Therefore, EHF antennas can be even smaller and more closely spaced than UHF antennas. In some cases, this can facilitate the use of antenna arrays within the UE 115 (e.g., for directional beamforming). However, EHF transmissions may suffer from even greater atmospheric attenuation and shorter range than UHF transmissions.

[0071] Therefore, the wireless communication system 100 can support millimeter-wave (mmW) communication between the UE 115 and the base station 105. Devices operating in the mmW or EHF bands can have multiple antennas to allow beamforming. That is, the base station 105 can use multiple antennas or antenna arrays to perform beamforming operations for directional communication with the UE 115. Beamforming (which can also be referred to as spatial filtering or directional transmission) is a signal processing technique that can be used at a transmitter (e.g., base station 105) to shape and / or manipulate the overall antenna beam in the direction of a target receiver (e.g., UE 115). This is achieved by combining elements in an antenna array such that signals transmitted at a specific angle undergo constructive interference while other signals undergo destructive interference.

[0072] Multiple-input multiple-output (MIMO) wireless systems use a transmission scheme between a transmitter (e.g., a base station) and a receiver (e.g., a UE), where both the transmitter and receiver are equipped with multiple antennas. Some portions of the wireless communication system 100 may use beamforming. For example, base station 105 may have an antenna array with several rows and columns of antenna ports that base station 105 can use for beamforming in its communication with UE 115. Signals may be transmitted multiple times in different directions (e.g., each transmission may be beamformed differently). The receiver (e.g., UE 115) may attempt multiple beams (e.g., antenna subarrays) when receiving synchronization signals.

[0073] In some scenarios, the antennas of base station 105 or UE 115 may be located within one or more antenna arrays that support beamforming or MIMO operation. One or more base station antennas or antenna arrays may coexist on an antenna assembly (such as an antenna tower). In some scenarios, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may use multiple antennas or antenna arrays to perform beamforming operations for directional communication with UE 115.

[0074] In some scenarios, the wireless communication system 100 may be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. In some scenarios, the Radio Link Control (RLC) layer may perform packet segmentation and reassembly for communication on logical channels. The Media Access Control (MAC) layer may perform prioritization and multiplex logical channels into transport channels. The MAC layer may also use Hybrid ARQ (HARQ) to provide MAC layer retransmission, thereby improving link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer may provide the establishment, configuration, and maintenance of RRC connections between the UE 115 and base station 105-c, access network entity 105-b, or core network 130 that supports radio bearers for user plane data. At the physical (PHY) layer, transport channels may be mapped to physical channels.

[0075] The time interval in LTE or NR can be a basic time unit (which can be the sampling period T). s = 1 / 30,720,000 seconds) in multiples. Time resources can be expressed in terms of length 10 ms (T). f =307200T s Radio frames are organized into units, identified by System Frame Numbers (SFNs) ranging from 0 to 1023. Each frame may comprise 10 1ms subframes numbered from 0 to 9. Subframes may be further divided into two 0.5ms slots, each containing 6 or 7 modulation symbol periods (depending on the length of the cyclic prefix added before each symbol). Excluding the cyclic prefix, each symbol contains 2048 sampling periods. In some cases, a subframe may be the minimum scheduling unit, also known as the Time Interval (TTI). In other cases, the TTI may be shorter than a subframe or may be dynamically selected (e.g., in short TTI bursts or in selected component carriers using short TTIs).

[0076] A resource element may include one symbol period and one subcarrier (e.g., a 15 kHz frequency range). A resource block may contain 12 coherent subcarriers in the frequency domain and, for a normal cyclic prefix in each frequency division multiple access (OFDM) symbol, 7 coherent OFDM symbols in the time domain (one timeslot), or 84 resource elements. The number of bits carried by each resource element may depend on the modulation scheme (the symbol configuration that can be selected during each symbol period). Therefore, the more resource blocks the UE receives and the higher the modulation scheme, the higher the data rate can be.

[0077] The wireless communication system 100 can support operation on multiple cells or carriers, a feature that may be referred to as carrier aggregation (CA) or multi-carrier operation. A carrier may also be referred to as a component carrier (CC), layer, channel, etc. The terms “carrier,” “component carrier,” “cell,” and “channel” are used interchangeably herein. The UE 115 may be configured with multiple downlink CCs for carrier aggregation and one or more uplink CCs. Carrier aggregation can be used in conjunction with frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0078] In some scenarios, the wireless communication system 100 may utilize enhanced component carriers (eCC). eCC can be characterized by one or more features, including wider bandwidth, shorter symbol duration, shorter TTI, and a modified control channel configuration. In some scenarios, eCC may be associated with carrier aggregation configurations or dual connectivity configurations (e.g., when multiple serving cells have suboptimal or non-ideal backhaul links). eCC can also be configured for use in unlicensed spectrum or shared spectrum (where more than one operator is permitted to use the spectrum). eCC characterized by wide bandwidth may include one or more segments that can be utilized by a UE 115 that cannot monitor the entire bandwidth or prefers to use limited bandwidth (e.g., to save power).

[0079] In some cases, eCC may utilize symbol durations different from other CCs, which may include using a reduced symbol duration compared to other CCs. Shorter symbol durations may be associated with increased subcarrier spacing. The TTI in eCC may include one or more symbols. In some cases, the TTI duration (i.e., the number of symbols in the TTI) may be variable. In some cases, eCC may utilize symbol durations different from other CCs, which may include using a reduced symbol duration compared to other CCs. Shorter symbol durations are associated with increased subcarrier spacing. Devices utilizing eCC (such as UE 115 or base station 105) may transmit wideband signals (e.g., 20, 40, 60, 80 MHz, etc.) with reduced symbol durations (e.g., 16.67 microseconds). The TTI in eCC may include one or more symbols. In some cases, the TTI duration (i.e., the number of symbols in the TTI) may be variable.

[0080] In some scenarios, wireless communication system 100 may utilize both licensed and unlicensed radio spectrum bands. For example, wireless communication system 100 may employ LTE License-Assisted Access (LTE-LAA) or LTE Unlicensed (LTE U) radio access technology or NR technology in unlicensed bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in unlicensed radio spectrum bands, wireless devices (such as base station 105 and UE 115) may employ a Listen-Before-Talk (LBT) protocol to ensure the channel is open before transmitting data. In some scenarios, operation in unlicensed bands may be configured based on carrier aggregation (CA) in coordination with CC operation in licensed bands. Operation in unlicensed spectrum may include downlink transmission, uplink transmission, or both. Duplexing in unlicensed spectrum may be based on FDD, TDD, or a combination of both.

[0081] Figure 2 A wireless communication system 200 supporting wake-up techniques for improved connectivity-mode discontinuous reception is illustrated according to various aspects of this disclosure. As an example, base station 105-a may identify buffered data for UE 115-a and transmit an authorization indication 215 to UE 115-a. UE 115-a may wake up based on the authorization indication 215 to receive authorization 220. UE 115-a and base station 105-a may be as described herein. Figure 1 The corresponding examples of the UE 115 and base station 105 are described.

[0082] Base station 105-a and UE 115-a may each include a base station DRX manager 205 and a UE DRX manager 210. Base station DRX manager 205 may be used to indicate permission 220 to UE 115-a. UE DRX manager 210 may be used to receive the permission indication 215 and wake up UE 115-a to receive permission 220. UE DRX manager 210 may be a reference... Figure 13 The description includes an example of a UE DRX manager 1415. A base station DRX manager 205 can be used as a reference. Figure 12 An example of a base station DRX manager 1215 is described.

[0083] Base station 105-a can identify buffered data for UE 115-a, which can operate in DRX mode. Base station 105-a can transmit an indication 220 for granting permission for buffered data to UE 115-a during a pre-wake-up period. UE 115-a can periodically check the indication for granting permission 220 during the pre-wake-up period. The pre-wake-up period can occur at the start of a DRX cycle (such as a short DRX cycle or a long DRX cycle). The indication 215 for granting permission can include scheduling information about granting permission 220 or an indication of an "open period" during which the UE can wake up and prepare to receive permission. UE 115-a can return to sleep after receiving permission 220 until another pre-wake-up period or another DRX cycle begins.

[0084] In some examples, base station 105-a may transmit an indication of grant 220 and scheduling information regarding grant 220 to UE 115-a. Base station 105-a may transmit the grant indication 215 to UE 115-a during a pre-wake-up period. Base station 105-a may include scheduling information regarding grant 220, or other information identifying resources used to transmit grant 220 to UE 115-a, in the grant indication 215. UE 115-a may wake up based on the scheduling information to receive grant 220. UE 115-a may reset the DRX inactive timer after receiving grant 220, thereby causing UE 115-a to return to sleep. In some examples, base station 105-a may not have pending data for UE 115-a at the start of the DRX cycle, allowing UE 115-a to enter sleep mode. If base station 105-a does not have pending data for UE 115-a at the start of a DRX cycle, base station 105-a may not schedule grant 220 for UE 115-a until the next DRX cycle. Indicating scheduling information to UE 115-a using grant indication 215 can reduce UE power usage because UE 115-a can simply wake up to receive the indication.

[0085] In some examples, UE 115-a can wake up to receive permission 220 based on this indication or scheduling information. However, the UE may not receive permission 220. For example, base station 105-a may be unable to transmit permission 220, or interference, fading, or poor signal quality may affect permission 220 to the point that UE 115-a cannot receive the signal, or UE 115-a may be unable to decode permission correctly. In such cases, UE 115-a may determine that it has not received the indicated permission 220 and may reset the DRX inactive timer, thereby causing UE 115-a to return to sleep. UE 115-a may initiate or revert to a long DRX inactive timer, or it may initiate a short DRX inactive timer. Alternatively, base station 105-a may determine that UE 115-a has not received the indicated grant, for example, because base station 105-a did not transmit the grant, or because UE 115-a provided base station 105-a with an indication that UE 115-a has not received the grant. Subsequently, base station 105-a may reset its DRX inactive timer after receiving grant 220. Base station 105-a may initiate or revert to a long DRX inactive timer, or it may initiate a short DRX inactive timer.

[0086] In some examples, base station 105-a may indicate an on-time duration to UE 115-a during a pre-wake-up period. Base station 105-a may identify pending data for UE 115-a and transmit an indication of permission 220 for that data to UE 115-a during the pre-wake-up period. UE 115-a may identify the on-time duration indication and wake up for that on-time duration. If UE 115-a receives permission 220, UE 115-a may reset the DRX inactive timer, which may allow UE 115-a to return to sleep after receiving permission 220 instead of remaining active for the remaining on-time duration. In some examples, if UE 115-a resets the DRX short cycle timer, UE 115-a may remain in a short DRX cycle (e.g., it may not enter a long DRX cycle) if base station 105-a has pending data. In some examples, base station 105-a may not have pending data for UE 115-a, and base station 105-a may not transmit an indication of grant 220 to UE 115-a. If so, UE 115-a may enter sleep mode. In some examples, base station 105-a may identify pending data for UE 115-a and transmit an indication of grant 220 for that data to UE 115-a during the pre-wake-up period, and may transmit or attempt to transmit grant 220. However, in some examples, UE 115-a may not successfully receive grant 220. In such examples, UE 115-a may reset the DRX inactive timer, which may allow UE 115-a to return to sleep mode instead of remaining in wake-up mode for the entire power-on period. In some examples, UE 115-a may initiate a long DRX inactive timer, or it may initiate a short DRX inactive timer. Alternatively, base station 105-a may determine that UE 115-a has not received the indicated grant. Subsequently, base station 105-a may reset its DRX inactive timer after receiving grant 220. Base station 105-a may initiate or revert to a long DRX inactive timer, or it may initiate a short DRX inactive timer.

[0087] In other examples, base station 105-a may indicate grant 220 and the on duration to UE 115-a, but if UE 115-a does not receive grant 220, UE 115-a may not reset the DRX short cycle timer. Base station 105-a may identify pending data for UE 115-a and transmit an indication of grant 220 for that data to UE 115-a during the pre-wake-up period. UE 115-a may wake up for the on duration and prepare to receive grant 220. If UE 115-a receives grant 220, UE 115-a may reset the DRX inactive timer, which may allow UE 115-a to return to sleep instead of being active for the remainder of the on duration after receiving grant 220. If UE 115-a receives grant during the on duration, UE 115-a may reset the DRX short cycle timer to remain in a short DRX cycle. However, in some examples, base station 105-a may transmit an authorization instruction 215, but base station 105-a may not transmit authorization 220 during the activation period. If UE 115-a does not receive authorization during the activation period, UE 115-a may not reset the DRX short cycle timer, and UE 115-a may be able to enter a long DRX cycle.

[0088] In some examples, if base station 105-a can schedule UE 115-a in the current DRX cycle, base station 105-a can include the activation duration in the indication 220 to UE 115-a. If base station 105-a has pending data for UE 115-a and can schedule UE 115-a during the current DRX cycle, base station 105-a can notify UE 115-a to wake up to receive the authorization 220 after the activation duration has elapsed. If UE 115-a receives the authorization 220, UE 115-a can reset the DRX inactive timer, which allows UE 115-a to return to sleep after receiving the authorization 220 instead of waiting for the remaining activation duration. If base station 105-a does not have pending data or cannot schedule UE 115-a in the current DRX cycle, base station 105-a may not transmit the authorization indication 215, and UE 115-a may enter sleep mode. Subsequently, base station 105-a may not schedule 220 until the next DRX cycle.

[0089] UE 115-a can dynamically switch between DRX operating modes or configurations. For example, UE 115-a can switch between a pre-wake-up configuration and a periodically enabled duration configuration. For instance, if UE 115-a was served during the previous DRX cycle, UE 115-a can operate with the periodically enabled duration configuration in the subsequent DRX cycle. Otherwise, UE 115-a can operate using the pre-wake-up configuration. If UE 115-a is served with a specific traffic mode having known burst periodicity, UE 115-a can switch from the pre-wake-up configuration to the periodically enabled duration configuration. In some examples, base station 105-a can transmit a configuration indication to UE 115-a, which indicates to UE 115 which configuration to use (e.g., in which DRX mode to operate). This configuration indication can be based on network performance metrics.

[0090] Figure 3 A pre-wake-up grant indication communication flow 300 supporting a wake-up technique for improved connectivity-mode discontinuous reception is illustrated according to various aspects of this disclosure. As an example, base station 105 may identify pending data for UE 115, and base station 105 may transmit an indication to UE 115 for granting of buffered data. The indication for grant may include scheduling information regarding granting. This document may refer to... Figure 1 and 2 Describe UE 115 and base station 105.

[0091] Base station 105 can identify pending data for UE 115. UE 115 can be in a DRX cycle, such as a long DRX cycle 305 or a short DRX cycle 330. Base station 105 can transmit an indication of grant and scheduling information about that grant to UE 115 during a pre-wake-up period 310. The pre-wake-up cycle 310 can be a periodic time during which UE 115 checks downlink information (e.g., an indication of downlink grant) from base station 105. If UE 115 does not receive an indication during the pre-wake-up period, UE 115 can return to sleep. In some examples, UE 115 can switch from long DRX cycle 305 to short DRX cycle 330 based on an indication of grant identified in pre-wake-up period 310-a.

[0092] Base station 105 may transmit an authorization indication to UE 115 during a pre-wake-up period 310-a. Base station 105 may include scheduling information regarding the authorization in this indication. UE 115 may wake up based on the scheduling information to receive the authorization included in data 315. UE 115 may wake up for an on-duration of 325, which includes the duration of data 315 and an inactive period 320. UE 115 may reset the DRX inactive timer after receiving authorization, thereby returning UE 115 to sleep. For example, UE 115 may remain on during the inactive period 320, but UE 115 may be inactive to receive additional downlink information. Alternatively, UE 115 may sleep once it has finished receiving authorization. UE 115 may continue to check for downlink information during the pre-wake-up period 310 (such as pre-wake-up period 310-b) in the next short DRX cycle 330.

[0093] Alternatively, UE 115 can wake up for an on-time duration of 325, which includes the duration of data 315 and an inactive period 320. However, UE 115 may not successfully receive permission, and upon indicating that permission has not been received, UE 115 can reset the DRX inactive timer, thereby causing UE 115 to return to sleep.

[0094] During the pre-wake-up period 310-c, UE 115 can determine that it has not received an indication of downlink permission for several short DRX cycles 330. Therefore, UE 115 can switch to a long DRX cycle 305, and UE 115 can sleep until the pre-wake-up period 310-d. The pre-wake-up period 310-d can be the start of a new long DRX cycle 305.

[0095] In some examples, base station 105 may not have pending data for UE 115 at the start of a long DRX cycle 305, so UE 115 can enter sleep mode. If base station 105 does not have pending data for UE 115 at the start of a long DRX cycle 305, base station 105 may not schedule permission for UE 115 until the next DRX cycle (e.g., a DRX cycle including pre-wake-up period 310-d). Using permission indications to indicate scheduling information to UE 115 can reduce UE power usage because UE 115 can simply wake up to receive the indication.

[0096] Figure 4A pre-wake-up grant indication communication flow 400 supporting wake-up techniques for improved connectivity-mode discontinuous reception is illustrated according to various aspects of this disclosure. As an example, base station 105 may transmit an indication to UE 115 for granting access to buffered data. The indication for granting access may include an on duration during which UE 115 may receive the grant. If UE 115 detects the indication, UE 115 may reset the DRX short cycle timer and begin another short DRX cycle 420. This document may refer to... Figure 1 and 2 Describe UE 115 and base station 105.

[0097] Base station 105 can identify pending data for UE 115. UE 115 can be in a short DRX cycle 420 or a long DRX cycle. Base station 105 can transmit an indication of grant and an on-time 425 for that grant to UE 115 during a pre-wake-up period 405. The pre-wake-up cycle 405 can be a periodic time during which UE 115 checks downlink information (e.g., an indication of downlink grant) from base station 105. If UE 115 does not receive an indication during the pre-wake-up period, UE 115 can return to sleep. In some examples, UE 115 can switch from a long DRX cycle to a short DRX cycle 420 based on an indication of grant identified in pre-wake-up period 405-a.

[0098] Base station 105 may transmit an authorization instruction and an activation duration 425-a to UE 115 during a pre-wake-up period 405-a. Activation duration 425-a may be a period during which base station 105 may transmit authorization. For example, UE 115 may receive downlink authorization in data 410, but activation duration 425-a may include the duration of data 410 and an inactive period 415. UE 115 may reset the DRX inactive timer after receiving authorization, thereby returning UE 115 to sleep. For example, UE 115 may remain active during inactive period 415, but UE 115 may be inactive to receive additional downlink information. Alternatively, UE 115 may sleep once it has finished receiving authorization. UE 115 may continue checking for downlink information during the pre-wake-up period 405 (such as pre-wake-up period 405-b) in the next short DRX cycle 420.

[0099] Base station 105 may identify additional pending data and transmit an indication of another grant during pre-wake-up period 405-c. Base station 105 may also indicate to UE 115 an enable duration 425-b during pre-wake-up period 405-c. UE 115 may enable for duration 425-b, but base station 105 may not transmit the grant (e.g., due to load on base station 105). UE 115 may not receive the grant, but UE 115 may still reset the DRX short cycle timer so that UE 115 does not enter a long DRX cycle while base station 105 has pending data. Therefore, pre-wake-up period 405-d may be included in short DRX cycle 420. In some examples, UE 115 may continue operating in short DRX cycle 420 until UE 115 receives pending downlink data and further does not receive an indication of downlink grant for several pre-wake-up periods 405.

[0100] In some examples, base station 105 may not have pending data for UE 115 at the start of the first DRX cycle, so UE 115 may enter sleep mode. If base station 105 does not have pending data for UE 115 at the start of the first DRX cycle, base station 105 may not schedule permission for UE 115 until the next DRX cycle.

[0101] Figure 5 A pre-wake-up grant indication communication flow 500 supporting wake-up techniques for improved connectivity-mode discontinuous reception is illustrated according to various aspects of this disclosure. As an example, base station 105 may transmit an indication to UE 115 for granting access to buffered data. The indication for granting access may include an on duration during which UE 115 may receive the grant. If UE 115 does not receive the grant, UE 115 may not reset the DRX short cycle timer and may allow UE 115 to enter a long DRX cycle 505. Reference may be made herein to... Figure 1 and 2 Describe UE 115 and base station 105.

[0102] Base station 105 can identify pending data for UE 115. UE 115 can be in either a short DRX cycle 525 or a long DRX cycle 505. Base station 105 can transmit an indication of grant and the duration of that grant to UE 115 during a pre-wake-up period 510. The pre-wake-up cycle 510 can be a periodic time during which UE 115 checks downlink information (e.g., an indication of downlink grant) from base station 105. If UE 115 does not receive an indication during the pre-wake-up period, UE 115 can return to sleep. In some examples, UE 115 can switch from long DRX cycle 505 to short DRX cycle 525 based on an indication of grant identified in pre-wake-up period 510-a.

[0103] Base station 105 may transmit an authorization instruction and an activation duration 530-a to UE 115 during a pre-wake-up period 510-a. Activation duration 530-a may be a period during which base station 105 may transmit authorization. For example, UE 115 may receive downlink authorization in data 515, but activation duration 530-a may include the duration of data 515 and an inactive period 520. UE 115 may reset the DRX inactive timer after receiving authorization, thereby returning UE 115 to sleep. For example, UE 115 may remain active during the inactive period 520, but UE 115 may be inactive to receive additional downlink information. Alternatively, UE 115 may sleep once it has finished receiving authorization. UE 115 may continue checking for downlink information during the pre-wake-up period 510 (such as pre-wake-up period 510-b) in the next short DRX cycle 525.

[0104] In some examples, UE 115 may receive an indication of permission and an on-time for that permission during the pre-wake-up period 510, but may not receive that permission in data 515. For example, base station 105 may not transmit data 515 (e.g., due to load on base station 105), or UE 115 may not have successfully decoded part or all of data 515. In such cases, UE 115 may identify that permission has not been received and may reset the DRX inactive timer, causing UE 115 to return to sleep. For example, UE 115 may remain on during the inactive period 520, but UE 115 may not be active to receive additional downlink information. Alternatively, once UE 115 identifies that permission has not been received, UE 115 may sleep. Resetting the DRX inactive timer may include initiating a short DRX cycle or a long DRX cycle.

[0105] Base station 105 can also identify that UE 115 has not received permission and reset the DRX inactive timer at base station 105. The DRX inactive timer at base station 105 can be used for short DRX cycles or long DRX cycles and can be consistent with the DRX inactive timer of UE 115.

[0106] Alternatively, base station 105 may identify additional pending data and transmit an indication of another grant during the pre-wake-up period 510-c. Base station 105 may also indicate an on-time duration 530-b to UE 115 during the pre-wake-up period 510-c. UE 115 may enable for the on-time duration 530-b, but base station 105 may not transmit the grant (e.g., due to load on base station 105). UE 115 may not receive the grant, so UE 115 may not reset the DRX short cycle timer, allowing UE 115 to enter a long DRX cycle 505 even though base station 105 may still have pending data. Therefore, the pre-wake-up period 510-d may be included in the long DRX cycle 505. In some examples, UE 115 may continue to operate in short DRX cycle 525 until UE 115 can switch to long DRX cycle 505 if UE 115 does not receive downlink permission for several short DRX cycles 525.

[0107] In some examples, base station 105 may not have pending data for UE 115 at the start of long DRX cycle 505, so UE 115 may enter sleep mode. If base station 105 does not have pending data for UE 115 at the start of long DRX cycle 505, base station 105 may not schedule permission for UE 115 until the next DRX cycle (e.g., long DRX cycle 505 including pre-wake-up period 510-d).

[0108] Figure 6 A pre-wake-up grant indication communication flow 600 supporting wake-up techniques for improved connectivity-mode discontinuous reception is illustrated according to various aspects of this disclosure. As an example, base station 105 may identify pending data for UE 115. Base station 105 may transmit an indication for granting buffered data to UE 115 during the pre-wake-up period of a DRX cycle. Base station 105 may transmit this indication if it can schedule UE 115 for granting in the same DRX cycle. This document may refer to... Figure 1 and 2 Describe UE 115 and base station 105.

[0109] Base station 105 can identify pending data for UE 115. UE 115 can be in a DRX cycle, such as a long DRX cycle 605 or a short DRX cycle 630. Base station 105 can transmit an indication of grant for that grant to UE 115 during a pre-wake-up period 610, but if base station 105 can schedule UE 115 in the same DRX cycle, base station 105 can only transmit the indication of grant. Pre-wake-up cycle 610 can be a periodic time during which UE 115 checks downlink information (e.g., an indication of downlink grant) from base station 105. If UE 115 does not receive an indication during the pre-wake-up period, UE 115 can return to sleep. In some examples, UE 115 can switch from long DRX cycle 605 to short DRX cycle 630 based on an indication of grant identified in pre-wake-up period 610-a.

[0110] Base station 105 can identify pending data for UE 115 and determine whether base station 105 can schedule UE 115 for grant. If base station 105 can schedule grant, it can transmit an indication of grant to UE 115 during a pre-wake-up period 610-a. Base station 105 can include an on-duration 625 in this indication, during which UE 115 can receive grant. UE 115 can wake up for the on-duration 625 to receive the grant included in data 615. UE 115 can reset the DRX inactive timer after receiving grant, thereby returning UE 115 to sleep. For example, UE 115 can remain on during the inactive period 620, but UE 115 may be inactive to receive additional downlink information. Alternatively, UE 115 can sleep once it has finished receiving grant. UE 115 can continue to check downlink information during the pre-wake-up period 610 (such as pre-wake-up period 610-b) in the next short DRX cycle 630.

[0111] In some examples, base station 105 may identify pending data for UE 115 and may transmit an authorization indication to UE 115 during a pre-wake-up period 610-a. Base station 105 may include an on-duration 625 in the indication, during which UE 115 may receive authorization. UE 115 may wake up for the on-duration 625 to receive the authorization included in data 615. However, in some cases, UE 115 may not receive the indicated authorization. Base station 105 may identify that UE 115 has not received the resource authorization indicated by the transmitted indication. UE 115 may reset the DRX inactive timer after receiving authorization, thereby causing UE 115 to return to sleep. For example, UE 115 may remain on during inactive period 620, but UE 115 may be inactive to receive additional downlink information. UE 115 can continue to check downlink information during the pre-wake-up period 610 (such as pre-wake-up period 610-b) in the next short DRX cycle 630.

[0112] During the pre-wake-up period 610-c, UE 115 can determine that it has not received an indication of downlink permission for several short DRX cycles 630. Therefore, UE 115 can switch to a long DRX cycle 605, and UE 115 can sleep until the pre-wake-up period 610-d. The pre-wake-up period 610-d can be the start of a new long DRX cycle 605.

[0113] In some examples, base station 105 may not have pending data for UE 115 at the start of long DRX cycle 605, so UE 115 may enter sleep mode. If base station 105 does not have pending data for UE 115 at the start of long DRX cycle 605, base station 105 may not schedule permission for UE 115 until the next DRX cycle (e.g., the DRX cycle including pre-wake-up period 610-d).

[0114] Figure 7A process flow diagram 700 supporting wake-up techniques for improved connectivity-mode discontinuous reception according to various aspects of this disclosure is shown. As an example, base station 105-b and UE 115-b can be configured for wireless communication, and UE 115-b can be in or enter DRX mode. UE 115-b can operate using a first DRX mode, wherein UE 115-b has a pre-wake-up period at the start of a DRX cycle. In the first DRX mode, UE 115-b can receive an indication of permission, allowing UE 115-b to wake up at a later time to receive permission. Alternatively, UE 115-b can operate using a second DRX mode, wherein UE 115-b wakes up at the start of each DRX cycle. In the case where UE 115-b receives permission, UE 115-b can wake up for the duration of each DRX cycle.

[0115] In 705, base station 105-b can transmit DRX mode configuration to UE 115-b. The DRX mode configuration can include a first DRX mode or a second DRX mode. In some examples, the DRX mode configuration can be based on network performance metrics.

[0116] At 710, UE 115-b can select the DRX mode for the subsequent DRX cycle. UE 115-b can select the DRX mode based on the DRX mode configuration received from base station 105-b. In other examples, UE 115-b may not receive the DRX mode configuration from base station 105-b, for example, because such a DRX mode configuration was not transmitted. In some examples, UE 115-b can select the DRX mode based on whether the UE was served during the previous DRX cycle. For example, if UE 115-b was served during the previous DRX cycle, UE 115-b can select to use the second DRX mode. Otherwise, the UE can select to use the first DRX mode. In some examples, UE 115-b can select the DRX mode based on the traffic pattern or the burst periodicity of the traffic pattern. For example, if UE 115-b is served by Voice over LTE (VoLTE) configuration, UE 115-b can select the first DRX mode.

[0117] At 715, UE 115-b can initiate a DRX cycle based on the DRX mode selected at 710. At 720, UE 115-b can receive an indication of resource grant, and at 725, UE 115-b can receive the indicated grant, each as further described above.

[0118] Figure 8A process flow diagram 800 supporting wake-up techniques for improved connectivity-mode discontinuous reception according to various aspects of this disclosure is shown. As an example, base station 105-c and UE 115-c can be configured for wireless communication, and UE 115-c can be in or enter DRX mode. UE 115-c can operate using a first DRX mode, wherein UE 115-c has a pre-wake-up period at the start of a DRX cycle. In the first DRX mode, UE 115-c can receive an indication of permission, allowing UE 115-c to wake up at a later time to receive permission. Alternatively, UE 115-c can operate using a second DRX mode, wherein UE 115-c wakes up at the start of each DRX cycle. In the case where UE 115-c receives permission, UE 115-c can wake up for the duration of each DRX cycle.

[0119] In 805, base station 105-c can transmit DRX mode configuration to UE 115-c. DRX mode configuration can include a first DRX mode or a second DRX mode. In some examples, DRX mode configuration can be based on network performance metrics.

[0120] In 810, UE 115-c can select the DRX mode for the subsequent DRX cycle. UE 115-c can select the DRX mode based on the DRX mode configuration received from base station 105-c. In other examples, UE 115-c may not receive the DRX mode configuration from base station 105-c, for example, because such a DRX mode configuration was not transmitted. In some examples, UE 115-c can select the DRX mode based on whether the UE was served during the previous DRX cycle. For example, if UE 115-c was served during the previous DRX cycle, UE 115-c can select to use the second DRX mode. Otherwise, the UE can select to use the first DRX mode. In some examples, UE 115-c can select the DRX mode based on the traffic pattern or the burst periodicity of the traffic pattern. For example, if UE 115-c is served by Voice over LTE (VoLTE) configuration, UE 115-c can select the first DRX mode.

[0121] At 815, UE 115-b can start a DRX cycle based on the DRX mode selected at 810.

[0122] At 820, base station 105-c can transmit an authorization indication to UE 115-c. This authorization indication can instruct UE 115-c to wake up for a certain period of time. UE 115-c can wake up in response to the received authorization indication in order to attempt to receive the indicated authorization.

[0123] At 830, UE 115-c can identify that it has not received the resource grant. UE 115-c can identify the lack of resource grant at least in part based on receiving an indication that resource grant will be transmitted, by monitoring the resource grant. In some examples, UE 115-c may not have received the grant, for example because base station 105-a has not yet transmitted the grant. In some examples, base station 105-c may transmit the indicated grant at 825, but UE 115-c may not have successfully received the grant, for example because UE 115-c did not receive the signal containing the grant, or failed to decode the signal. In some examples, the grant indication transmitted at 820 and the grant transmitted at 825 may be transmitted within the same discontinuous reception cycle.

[0124] At 835, UE 115-c can reset the discontinuous reception cycle timer at least in part based on an indication that permission has not been received at 830. In some examples, UE 115-c can initiate a long discontinuous reception cycle at least in part based on this indication. Alternatively, UE 115-c can initiate a short discontinuous reception cycle at least in part based on this indication.

[0125] Additionally or alternatively, in some examples, at 840, base station 105-c may identify that the UE has not received the resource grant indicated by the transmitted indication. In some examples, base station 105-c may identify that base station 105-c has not transmitted the resource grant indicated by the transmitted indication at 825. In other examples, base station 105-c may receive from UE 115-c an indication that UE 115-c has not received the resource grant indicated at 820.

[0126] At 845, base station 105-c may reset the discontinuous reception cycle timer at least in part based on the indication at 840 that UE 115-c has not received the resource permission indicated by the transmitted indication. In some examples, base station 105-c may initiate a long discontinuous reception cycle at least in part based on the indication that UE 115-c has not received the resource permission indicated by the transmitted indication. Alternatively, base station 105-c may initiate a short discontinuous reception cycle at least in part based on the indication that UE 115-c has not received the resource permission indicated by the transmitted indication.

[0127] Figure 9A process flow diagram 900 supporting wake-up techniques for improved connectivity-mode discontinuous reception according to various aspects of this disclosure is shown. As an example, base station 105-c, UE 115-d, and UE 115-e can be configured for wireless communication. UE 115-d and UE 115-e can be in or enter DRX mode. UE 115-d and UE 115-e can each be in separate UE 115 groups. For example, UE 115-d can represent a first UE 115 group, and UE 115-e can represent a second UE 115 group. In some examples, base station 105-d can serve one UE 115 group at a time, such as a UE 115 group with a large amount of buffered data.

[0128] In step 905, base station 105-d can transmit a service indication to UE 115-d. This service indication can indicate to the first group of UEs 115 that base station 105-d can begin serving the first group of UEs 115. UE 115-d can be included in the first group of UEs 115.

[0129] In step 910, UE 115-d can initiate a DRX cycle. UE 115-d can use a DRX mode with a pre-wake-up period at the start of a DRX cycle. UE 115-d can check the indications given during the pre-wake-up period. In some examples, other UE 115s in the first UE 115 group can also initiate a DRX cycle.

[0130] At 915, base station 105-d can transmit an authorization instruction to UE 115-d. The authorization instruction may include scheduling information or a period during which UE 115-d can wake up to prepare to receive authorization. In some examples, base station 105-d may also transmit the authorization instruction to other UEs 115 in the first group of UEs 115.

[0131] At 920, base station 105-d can transmit a service instruction to UE 115-e. After base station 105-d serves UE 115-d and all UEs 115 and UE 115-d are grouped into group 945, base station 105-d can begin serving a second group of UEs 115 950. UE 115-e can be included in the second group of UEs 115 950.

[0132] At 925, UE 115-e and other UE 115s in the second UE 115 group can begin DRX cycling. UE 115-e and the second UE 115 group can use DRX mode with a pre-wake-up period at the start of DRX cycling.

[0133] At 930, base station 105-d may transmit an authorization indication to UE 115-e. The authorization indication may include scheduling information or a period during which UE 115-e may wake up to prepare to receive authorization. In some examples, base station 105-d may also transmit the authorization indication to other UEs 115 in a second group of UEs 115. At 935, UE 115-e may receive the authorization indication, and at 940, UE 115-e may receive the authorized authorization, each as further described above.

[0134] Figure 10 A block diagram 1000 of a wireless device 1005 supporting a wake-up technique for improved connected-mode discontinuous reception is shown according to various aspects of this disclosure. The wireless device 1005 may be as described in reference... Figure 1 Examples of various aspects of the described base station 105. The wireless device 1005 may include a receiver 1010, a base station DRX manager 1015, and a transmitter 1020. The wireless device 1005 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0135] Receiver 1010 can 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 wake-up techniques for improved connectivity mode discontinuous reception). The information can be transmitted to other components of the device. Receiver 1010 can be a reference. Figure 13 Examples of various aspects of the transceiver 1335 are described.

[0136] Base Station DRX Manager 1015 can be used as a reference Figure 13 Examples of various aspects of the described base station DRX manager 1315.

[0137] The base station DRX manager 1015 can identify that the buffer contains data for transmission to the UE, and based on this identification, transmit an indication to the UE regarding subsequent transmission of resource grants to the UE, and, after the transmission of this indication, transmit the resource grant to the UE if the UE is in a discontinuous reception state. In some examples, the base station DRX manager 1015 can reset the discontinuous reception cycle timer at least in part based on the identification that the UE has not received the resource grant indicated by the transmitted indication.

[0138] Transmitter 1020 can transmit signals generated by other components of the device. In some examples, transmitter 1020 may coexist with receiver 1010 in a transceiver module. For example, transmitter 1020 may be a reference... Figure 13 Examples of various aspects of the transceiver 1335 are described. The transmitter 1020 may include a single antenna, or it may include an array of antennas.

[0139] Figure 11 A block diagram 1100 of a wireless device 1105 supporting a wake-up technique for improved connected-mode discontinuous reception is shown according to various aspects of this disclosure. The wireless device 1105 may be as described in reference... Figure 1 and 10 Examples of aspects of the described wireless device 1005 or base station 105. Wireless device 1105 may include a receiver 1110, a base station DRX manager 1115, and a transmitter 1120. Wireless device 1105 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0140] Receiver 1110 can 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 wake-up techniques for improved connectivity mode discontinuous reception). The information can be passed to other components of the device. Receiver 1110 can be a reference... Figure 13 Examples of various aspects of the transceiver 1335 are described.

[0141] Base station DRX Manager 1115 can be used as a reference Figure 13 Examples of various aspects of the described base station DRX manager 1315.

[0142] The base station DRX manager 1115 may also include a buffer content identifier 1125, a permission instruction communication manager 1130, a permission communication manager 1135, and a DRX timer manager 1140.

[0143] The buffer content identifier 1125 can identify that the buffer contains data to be transmitted to the UE, and identify the group of UEs based on the amount of data to be transmitted associated with the corresponding buffer of each UE in the group of UEs.

[0144] The grant instruction communication manager 1130 can transmit an instruction to the UE regarding a subsequent resource grant to the UE based on the identifier. In some cases, the instruction can instruct the UE to wake up for a certain duration. In other cases, the instruction can also instruct the UE to wake up to listen for the resource grant. Furthermore, in some cases, the grant instruction communication manager 1130 can transmit a group instruction regarding the transmission of one or more resource grants to an identified group of UEs. In some cases, the instruction regarding the subsequent transmission of resource grants to the UE and the resource grant are transmitted during the same discontinuous reception cycle. In some cases, the instruction instructs the UE to wake up for a certain duration.

[0145] The permission communication manager 1135 can transmit the resource permission to the UE when the UE is in a discontinuous reception state after the transmission of the instruction, and transmit an instruction about transmitting the resource permission to the UE in the starting subframe of the discontinuous reception cycle.

[0146] The DRX timer manager 1140 can reset the discontinuous reception cycle timer at least in part based on the indication that the UE has not received the resource permission indicated by the transmitted indication. Furthermore, in some cases, the DRX timer manager 1140 can initiate a long discontinuous reception cycle or a short discontinuous reception cycle at least in part based on the indication that the UE has not received the resource permission indicated by the transmitted indication. The DRX timer manager 1140 can also indicate that the base station has not transmitted the resource permission indicated by the transmitted indication, or receive an indication from the UE that the UE has not received the resource permission indicated by the transmitted indication.

[0147] Transmitter 1120 can transmit signals generated by other components of the device. In some examples, transmitter 1120 may coexist with receiver 1110 in a transceiver module. For example, transmitter 1120 may be a reference... Figure 13 Examples of various aspects of the transceiver 1335 are described. The transmitter 1120 may include a single antenna, or it may include an array of antennas.

[0148] Figure 12 A block diagram 1200 is shown of a base station DRX manager 1215 supporting wake-up technology for improved connectivity-mode discontinuous reception according to various aspects of this disclosure. The base station DRX manager 1215 may be a reference... Figure 10 , 11 Examples of aspects of base station DRX managers 1015, 1115, or 1315 described in section 13 are provided. Base station DRX manager 1215 may include a buffer content identifier 1220, a permission indication communication manager 1225, a permission communication manager 1230, a scheduling manager 1235, a DRX mode identifier 1240, a DRX mode indication manager 1245, a UE identifier 1250, and a DRX timer manager 1255. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0149] The buffer content identifier 1220 can identify that the buffer contains data to be transmitted to the UE, and identify the group of UEs based on the amount of data to be transmitted associated with the corresponding buffer of each UE in the group of UEs.

[0150] The grant instruction communication manager 1225 can transmit an instruction to the UE based on the identifier regarding a subsequent resource grant to the UE, wherein the instruction instructs the UE to wake up for a duration, or the instruction instructs the UE to wake up to listen for the resource grant, or a combination thereof. In some other cases, the grant instruction communication manager 1225 can transmit a group instruction regarding the transmission of one or more resource grants to an identified group of UEs. In some cases, the instruction regarding a subsequent resource grant to the UE and the resource grant are transmitted during the same discontinuous reception cycle. In some cases, the instruction instructs the UE to wake up for a duration.

[0151] The permission communication manager 1230 can transmit the resource permission to the UE when the UE is in a discontinuous reception state after the transmission of the instruction, and transmit an instruction about transmitting the resource permission to the UE in the starting subframe of the discontinuous reception cycle.

[0152] The dispatch manager 1235 can determine the scheduling of the UE during discontinuous reception cycles.

[0153] DRX mode identifier 1240 can determine a discontinuous reception mode for the UE to use to receive transmissions from the base station.

[0154] DRX mode identifier manager 1245 can transmit a mode indicator to the UE indicating the determined discontinuous reception mode. UE identifier 1250 can identify a group of UEs from a group of UEs.

[0155] The DRX timer manager 1255 can reset the discontinuous reception cycle timer at least in part based on an indication that the UE has not received the resource permission indicated by the transmitted indication. Furthermore, in some cases, the DRX timer manager 1255 can initiate a long discontinuous reception cycle or a short discontinuous reception cycle at least in part based on an indication that the UE has not received the resource permission indicated by the transmitted indication. The DRX timer manager 1255 can also indicate that the base station has not transmitted the resource permission indicated by the transmitted indication, or receive an indication from the UE that the UE has not received the resource permission indicated by the transmitted indication.

[0156] Figure 13 A diagram is shown of a system 1300 including a device 1305 supporting wake-up technology for improved connectivity-mode discontinuous reception, according to various aspects of this disclosure. Device 1305 may be, for example, as described above. Figure 1 , 10Examples of components of wireless device 1005, wireless device 1105, or base station 105 described in section 11, or including such components. Device 1305 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including base station DRX manager 1315, processor 1320, memory 1325, software 1330, transceiver 1335, antenna 1340, network communication manager 1345, and base station communication manager 1350. These components may be in electronic communication via one or more buses (e.g., bus 1310). Device 1305 may wirelessly communicate with one or more UEs 115.

[0157] Processor 1320 may include intelligent hardware devices (e.g., general-purpose processors, digital signal processors (DSPs), central processing units (CPUs), microcontrollers, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1320 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1320. Processor 1320 may be configured to execute computer-readable instructions stored in memory to perform various functions (e.g., functions or tasks supporting wake-up techniques for improved connected-mode discontinuous reception).

[0158] Memory 1325 may include random access memory (RAM) and read-only memory (ROM). Memory 1325 may store computer-readable, computer-executable software 1330, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 1325 may particularly include a basic input / output system (BIOS) that controls basic hardware and / or software operations, such as interaction with peripheral components or devices.

[0159] Software 1330 may include code for implementing various aspects of this disclosure, including code for supporting wake-up techniques for improved connected-mode discontinuous reception. Software 1330 may be stored in a non-transient computer-readable medium, such as system memory or other memory. In some cases, software 1330 may not be directly executed by a processor, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0160] Transceiver 1335 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 1335 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1335 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna.

[0161] In some cases, the wireless device may include a single antenna 1340. However, in other cases, the device may have more than one antenna 1340, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0162] The network communication manager 1345 can manage communication with the core network (e.g., via one or more wired backhaul links). For example, the network communication manager 1345 can manage the delivery of data communication by client devices (such as one or more UEs 115).

[0163] The base station communication manager 1350 manages communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with the UE 115. For example, the base station communication manager 1350 may coordinate the scheduling of transmissions to the UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, the base station communication manager 1350 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between the base stations 105.

[0164] Figure 14 A block diagram 1400 of a wireless device 1405 supporting a wake-up technique for improved connected-mode discontinuous reception is shown according to various aspects of this disclosure. The wireless device 1405 may be as described in reference... Figure 1 Examples of various aspects of the described UE 115. Wireless device 1405 may include a receiver 1410, a UE DRX manager 1415, and a transmitter 1420. Wireless device 1405 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0165] Receiver 1410 can 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 wake-up techniques for improved connectivity mode discontinuous reception). The information can be passed to other components of the device. Receiver 1410 can be a reference... Figure 17 Examples of various aspects of the transceiver 1735 are described.

[0166] UE DRX Manager 1415 can be used as a reference Figure 17Examples of various aspects of the UE DRX Manager 1715.

[0167] The UE DRX manager 1415 can receive from the base station an indication that a resource grant will be transmitted from the base station to the UE when the UE is in a discontinuous reception state, and monitor the resource grant based on the received indication that the resource grant will be transmitted. In some examples, the UE DRX manager 1415 can also identify that the UE has not received the resource grant indicated by the received indication, and reset the discontinuous reception cycle timer based at least in part on the identification.

[0168] Transmitter 1420 can transmit signals generated by other components of the device. In some examples, transmitter 1420 may coexist with receiver 1410 in a transceiver module. For example, transmitter 1420 may be a reference... Figure 17 Examples of various aspects of the transceiver 1735 are described. The transmitter 1420 may include a single antenna, or it may include an array of antennas.

[0169] Figure 15 A block diagram 1500 of a wireless device 1505 supporting a wake-up technique for improved connected-mode discontinuous reception is shown according to various aspects of this disclosure. The wireless device 1505 may be as described in reference... Figure 1 and 14 Examples of aspects of the described wireless device 1405 or UE 115. Wireless device 1505 may include a receiver 1510, a UE DRX manager 1515, and a transmitter 1520. Wireless device 1505 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0170] Receiver 1510 can 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 wake-up techniques for improved connectivity mode discontinuous reception). The information can be passed to other components of the device. Receiver 1510 can be a reference. Figure 17 Examples of various aspects of the transceiver 1735 are described.

[0171] UE DRX Manager 1515 can be used as a reference Figure 17 Examples of various aspects of the described UE DRX manager 1715. The UE DRX manager 1515 may also include a permission receiver manager 1525, a permission monitor manager 1530, and a DRX timer manager 1535.

[0172] The grant reception manager 1525 can receive, and receive, an indication from the base station that a resource grant will be transmitted to the UE by the base station when the UE is in a discontinuous reception state. In some cases, the indication and the resource grant to be transmitted by the base station are received during the same discontinuous reception cycle.

[0173] The grant monitoring manager 1530 can monitor a resource grant based on receiving an instruction to transmit that resource grant, and monitor the indicated resource grant during an enabled state. In some examples, the grant monitoring manager 1530 can also identify that the UE has not received the resource grant indicated by the received instruction.

[0174] The DRX timer manager 1535 can reset the discontinuous receive cycle timer at least in part based on an indication that the UE has not received resource permission indicated by the received indication. The DRX timer manager 1535 can further initiate a short discontinuous receive cycle or a long discontinuous receive cycle at least in part based on this indication.

[0175] Transmitter 1520 can transmit signals generated by other components of the device. In some examples, transmitter 1520 may coexist with receiver 1510 in a transceiver module. For example, transmitter 1520 may be a reference... Figure 17 Examples of various aspects of the transceiver 1735 are described. The transmitter 1520 may include a single antenna, or it may include an array of antennas.

[0176] Figure 16 A block diagram 1600 is shown of a UE DRX manager 1615 supporting wake-up technology for improved connectivity-mode discontinuous reception according to various aspects of this disclosure. The UE DRX manager 1615 may be a reference... Figure 14 , 15 Examples of various aspects of the UE DRX manager 1715 described in 17. The UE DRX manager 1615 may include an authorized receive manager 1620, an authorized monitor manager 1625, a DRX mode manager 1630, and a DRX timer manager 1635. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0177] The grant reception manager 1620 can receive, and receive, an indication from the base station that a resource grant will be transmitted to the UE by the base station when the UE is in a discontinuous reception state. In some cases, the indication and the resource grant to be transmitted by the base station are received during the same discontinuous reception cycle.

[0178] The permission monitoring manager 1625 can monitor a resource permission based on receiving an instruction to transmit that resource permission, and can monitor the indicated resource permission during an enabled state. In some cases, the permission monitoring manager 1625 can identify that the UE has not received the resource permission indicated by the received instruction.

[0179] The DRX mode manager 1630 can enter the discontinuous reception state based on received instructions regarding granting transmission resources, or identification of data to be transmitted on the downlink or uplink, or a combination thereof.

[0180] In some other scenarios, the DRX mode manager 1630 may reset the discontinuous receive inactive timer based on receiving resource grant, or reset the discontinuous receive cyclic timer based on receiving an indication of transmitting resource grant, or identify the presence of data to be transmitted on the downlink or uplink, or a combination thereof.

[0181] In some scenarios, the DRX mode manager 1630 may switch between a second discontinuous reception mode and a first discontinuous reception mode associated with a discontinuous reception state, or identify the traffic mode of the UE 115, or switch between the first discontinuous reception mode and the second discontinuous reception mode based on the identified traffic mode, or determine that the base station transmitted data to the UE 115 according to the first discontinuous reception mode during the previous discontinuous reception cycle, or operate in the first discontinuous reception mode in the current discontinuous reception cycle based on the determination, or a combination thereof.

[0182] The DRX timer manager 1635 can reset the discontinuous receive cycle timer at least in part based on an indication that the UE has not received resource permission indicated by the received indication. The DRX timer manager 1635 can further initiate a short discontinuous receive cycle or a long discontinuous receive cycle at least in part based on this indication.

[0183] Figure 17 A diagram is shown of a system 1700 including a device 1705 supporting a pre-WU scheme with respect to C-DRX improvements, according to various aspects of this disclosure. Device 1705 may be, for example, as described above. Figure 1Examples of components of the described UE 115 or including these components. Device 1705 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including UE DRX manager 1715, processor 1720, memory 1725, software 1730, transceiver 1735, antenna 1740, and I / O controller 1745. These components may be in electronic communication via one or more buses (e.g., bus 1710). Device 1705 may wirelessly communicate with one or more base stations 105.

[0184] Processor 1720 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1720 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1720. Processor 1720 may be configured to execute computer-readable instructions stored in memory to perform various functions (e.g., functions or tasks supporting wake-up techniques for improved connected-mode discontinuous reception).

[0185] Memory 1725 may include RAM and ROM. Memory 1725 may store computer-readable, computer-executable software 1730, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 1725 may, in particular, contain a BIOS that controls basic hardware and / or software operations, such as interaction with peripheral components or devices.

[0186] Software 1730 may include code for implementing various aspects of this disclosure, including code for supporting a pre-WU scheme with respect to C-DRX improvements. Software 1730 may be stored in a non-transient computer-readable medium, such as system memory or other memory. In some cases, software 1730 may not be executed directly by a processor, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein.

[0187] Transceiver 1735 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 1735 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1735 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna.

[0188] In some cases, the wireless device may include a single antenna 1740. However, in other cases, the device may have more than one antenna 1740, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0189] I / O controller 1745 manages the input and output signals of device 1705. I / O controller 1745 can also manage peripheral devices not integrated into device 1705. In some cases, I / O controller 1745 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1745 may utilize an operating system, such as... Or another known operating system.

[0190] Figure 18 A flowchart illustrating a method 1800 for improved connectivity-mode discontinuous reception wake-up techniques according to various aspects of this disclosure is shown. Operation of method 1800 may be implemented by a base station 105 or its components as described herein. For example, operation of method 1800 may be implemented by, as referred to... Figures 10 to 13 The described base station DRX manager is used to perform this. In some examples, base station 105 may execute a set of code for controlling the functional elements of the device to perform the following functions. Additionally or alternatively, base station 105 may use dedicated hardware to perform aspects of the following functions.

[0191] In block 1805, base station 105 may identify a buffer containing data for transmission to the UE. Operation of block 1805 can be referenced. Figures 1 to 9 The described method is used to perform this operation. In some examples, aspects of the operation of box 1805 may be performed as described in the reference. Figures 10 to 13 The buffer content identifier described is used for execution.

[0192] In block 1810, base station 105 may, at least in part, transmit an indication to the UE regarding the subsequent transmission of resource grants to the UE based on this identifier. The operation of block 1810 can be described according to reference... Figures 1 to 9 The described method is used to perform this operation. In some examples, aspects of the operation of box 1810 may be performed as described in the reference. Figures 10 to 13 The description grants permission for the communication manager to execute.

[0193] In block 1815, base station 105 may transmit the resource grant to the UE after the indicated transmission, when the UE is in a discontinuous reception state. The operation of block 1815 can be referenced. Figures 1 to 9 The described method is used to perform this operation. In some examples, aspects of the operation of box 1815 may be performed as described in the reference. Figures 10 to 13 The description grants permission for the communication manager to execute.

[0194] Figure 19A flowchart illustrating a method 1900 for improved connectivity-mode discontinuous reception wake-up techniques according to various aspects of this disclosure is shown. Operation of method 1900 may be implemented by a base station 105 or its components as described herein. For example, operation of method 1900 may be implemented by, as referred to... Figures 10 to 13 The described base station DRX manager is used to perform this. In some examples, base station 105 may execute a set of code for controlling the functional elements of the device to perform the following functions. Additionally or alternatively, base station 105 may use dedicated hardware to perform aspects of the following functions.

[0195] In block 1905, base station 105 can determine when to schedule the UE during a discontinuous reception cycle. The operation of block 1905 can be referenced. Figures 1 to 9 The described method is used to perform this operation. In some examples, aspects of the operation of box 1905 can be performed as described in the reference. Figures 10 to 13 The described scheduler is used to execute this.

[0196] In block 1910, base station 105 can identify that the buffer contains data for transmission to the UE. The operation of block 1910 can be referenced. Figures 1 to 9 The described method is used to perform this operation. In some examples, aspects of the operation of box 1910 can be performed as described in the reference. Figures 10 to 13 The buffer content identifier described is used for execution.

[0197] In block 1915, base station 105 may, at least in part, transmit to the UE an indication that resource granting will subsequently be transmitted to the UE based on the identifier, wherein the indication indicates that the UE will be woken up for a certain duration. The operation of block 1915 can be referenced. Figures 1 to 9 The described method is used to perform this operation. In some examples, aspects of the operation of box 1915 can be performed as described in the reference. Figures 10 to 13 The description grants permission for the communication manager to execute.

[0198] In block 1920, base station 105 may transmit the resource grant to the UE after the indicated transmission, when the UE is in a discontinuous reception state. The operation of block 1920 can be referenced. Figure 20 The described method is used to perform this operation. In some examples, aspects of the operation of box 1920 can be performed as described in the reference. Figures 10 to 13 The description grants permission for the communication manager to execute.

[0199] Figures 1 to 9 A flowchart illustrating a method 2000 for improved connectivity-mode discontinuous reception wake-up technology according to various aspects of this disclosure is shown. Operation of method 2000 may be implemented by a base station 105 or its components as described herein. For example, operation of method 2000 may be implemented by, as referred to... Figures 10 to 13The described base station DRX manager is used to perform this function. In some examples, base station 105 may execute a set of code for controlling the functional elements of the device to perform the following functions. Alternatively or additionally, base station 105 may use dedicated hardware to perform aspects of the following functions.

[0200] In block 2005, base station 105 can determine when to schedule the UE during a discontinuous reception cycle. The operation of block 2005 can be referenced. Figures 1 to 9 The described method is used to perform this operation. In some examples, aspects of the operation of box 2005 may be performed as described in the reference. Figures 10 to 13 The described scheduler is used to execute this.

[0201] In block 2010, base station 105 may identify that the buffer contains data for transmission to the UE. The operation of block 2010 can be referenced. Figures 1 to 9 The described method is used to perform this operation. In some examples, aspects of the operation of box 2010 may be performed as described in the reference. Figures 10 to 13 The buffer content identifier described is used for execution.

[0202] In block 2015, base station 105 may, at least in part, transmit to the UE an indication regarding the subsequent transmission of resource grant to the UE based on the identifier, wherein the indication instructs the UE to wake up to listen for the resource grant. The operation of block 2015 can be referenced. Figures 1 to 9 The described method is used to perform this operation. In some examples, aspects of the operation of box 2015 can be performed as described in the reference. Figure 21 The description grants permission for the communication manager to execute.

[0203] In block 2020, base station 105 may transmit the resource grant to the UE after the indicated transmission, when the UE is in a discontinuous reception state. The operation of block 2020 can be referenced. Figures 14 to 17 The described method is used to perform this operation. In some examples, aspects of the operation of box 2020 may be performed as described in the reference. Figures 1 to 9 The description grants permission for the communication manager to execute.

[0204] Figures 14 to 17 A flowchart illustrating a method 2100 for improved connectivity-mode discontinuous reception wake-up technology according to various aspects of this disclosure is shown. Operation of method 2100 may be implemented by a UE 115 or its components as described herein. For example, operation of method 2100 may be implemented by, as referred to... Figures 1 to 9 The UE DRX manager described herein is used for execution. In some examples, the UE 115 may execute a set of code for controlling the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the following functions.

[0205] In block 2105, UE 115 can receive from the base station an indication that resource granting will be transmitted to the UE by the base station when the UE is in a discontinuous reception state. The operation of block 2105 can be described according to reference... Figures 14 to 17 The described method is used to perform this operation. In some examples, aspects of the operation of box 2105 may be performed as described in the reference. Figures 1 to 9 The described permission to receive the manager is used to execute this.

[0206] In block 2110, UE 115 may enter the discontinuous reception state enabled state at least in part based on received instructions regarding granting transmission resources, or identification of the presence of data to be transmitted on the downlink or uplink, or a combination thereof. The operation of block 2110 may be performed according to reference... Figures 14 to 17 The described method is used to perform this operation. In some examples, aspects of the operation of box 2110 may be performed as described in the reference. Figures 1 to 9 The described DRX mode manager is used to execute this.

[0207] In block 2115, UE 115 can monitor the resource grant at least in part based on receiving an instruction regarding the transmission of the resource grant. The operation of block 2115 can be described according to reference... Figures 14 to 17 The described method is used to perform this operation. In some examples, aspects of the operation of box 2115 can be performed as described in the reference. Figure 22 The description grants permission for the monitoring manager to execute.

[0208] In block 2120, UE 115 can receive the resource grant from base station 105, at least in part, based on the monitoring resource grant. The operation of block 2120 can be described according to reference... Figures 10 to 13 The described method is used to perform this operation. In some examples, aspects of the operation of box 2120 may be performed as described in the reference. Figures 10 to 13 The UE DRX manager, permitted monitoring manager, or permitted receiving manager are described to perform this action.

[0209] Figures 10 to 13 A flowchart illustrating a method 2200 for improved connectivity-mode discontinuous reception wake-up techniques according to various aspects of this disclosure is shown. Operation of method 2200 may be implemented by a base station 105 or its components as described herein. For example, operation of method 2200 may be implemented by referring to... Figures 10 to 13 The described base station DRX manager is used to perform this function. In some examples, the UE 115 may execute a set of code for controlling the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the functions described below.

[0210] In block 2205, UE 115 may identify that the buffer contains data for transmission to the UE. Operation of block 2205 may be performed according to the methods described herein. In some examples, aspects of operation of block 2205 may be determined by reference to... Figure 23 The buffer content identifier described is used for execution.

[0211] In block 2210, UE 115 may, at least in part, transmit an indication to UE regarding the subsequent transmission of resource grants to UE based on this identifier. The operation of block 2210 may be performed according to the methods described herein. In some examples, aspects of the operation of block 2210 may be derived from, as referenced... Figures 10 to 13 The description grants permission for the communication manager to execute.

[0212] In block 2215, UE 115 may reset the discontinuous reception cycle timer, at least in part, based on the indication that the UE has not received resource permission as indicated by the transmitted indication. The operation of block 2215 may be performed according to the methods described herein. In some examples, aspects of the operation of block 2215 may be derived from, as referenced... Figures 10 to 13 The description grants permission for the communication manager to execute.

[0213] Figures 10 to 13 A flowchart illustrating a method 2300 for improved connectivity-mode discontinuous reception wake-up techniques according to various aspects of this disclosure is shown. Operation of method 2300 may be implemented by a base station 105 or its components as described herein. For example, operation of method 2300 may be implemented by, as referred to... Figures 10 to 13 The described base station DRX manager is used to perform this function. In some examples, the UE 115 may execute a set of code for controlling the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the functions described below.

[0214] In block 2305, UE 115 may identify that the buffer contains data for transmission to the UE. Operation of block 2305 may be performed according to the methods described herein. In some examples, aspects of the operation of block 2305 may be determined by reference to... Figures 10 to 13 The described DRX buffer content identifier is used to perform this.

[0215] In block 2310, UE 115 may, at least in part, transmit an indication to UE regarding the subsequent transmission of resource grants to UE based on this identifier. The operation of block 2310 may be performed according to the methods described herein. In some examples, aspects of the operation of block 2310 may be derived from, as referenced... Figure 24 The description grants permission for the communication manager to execute.

[0216] In block 2315, UE 115 may reset the discontinuous reception cycle timer at least in part based on the indication that the UE has not received resource permission indicated by the transmitted indication. The operation of block 2315 may be performed according to the methods described herein. In some examples, aspects of the operation of block 2315 may be provided as referenced... Figures 14 to 17 The described DRX timer manager is used for execution.

[0217] In some examples, at block 2320, UE 115 may initiate a short discontinuous reception cycle at least in part based on the indication that the UE has not received resource permission indicated by the transmitted indication. Alternatively, in some examples, at block 2325, UE 115 may initiate a long discontinuous reception cycle at least in part based on the indication that the UE has not received resource permission indicated by the transmitted indication. The operation of blocks 2320 and 2325 may be performed according to the methods described herein. In some examples, aspects of the operation of blocks 2320 and 2325 may be derived from, as referenced... Figures 14 to 17 The described DRX timer manager is used for execution.

[0218] Figures 14 to 17 A flowchart illustrating a method 2400 for improved connectivity-mode discontinuous reception wake-up technology according to various aspects of this disclosure is shown. Operation of method 2400 may be implemented by a UE 115 or its components as described herein. For example, operation of method 2400 may be implemented by, as referred to... Figures 14 to 17 The UE DRX manager described herein is used for execution. In some examples, the UE 115 may execute a set of code for controlling the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the functions described below.

[0219] In block 2405, UE 115 can receive from the base station an indication that resource granting will be transmitted to the UE by the base station when the UE is in a discontinuous reception state. The operation of block 2405 can be performed according to the methods described herein. In some examples, aspects of the operation of block 2405 can be determined by referring to... Figures 14 to 17 The described permission to receive the manager is used to execute this.

[0220] In block 2410, UE 115 can monitor the resource grant at least in part based on receiving an indication that the resource grant will be transmitted. The operation of block 2410 can be performed according to the methods described herein. In some examples, aspects of the operation of block 2410 can be determined by reference to... Figure 25 The description grants permission for the monitoring manager to execute.

[0221] In box 2415, UE 115 may identify that the UE has not received resource granting as indicated by the received indication. The operation of box 2415 may be performed according to the methods described herein. In some examples, aspects of the operation of box 2415 may be as described in reference to... Figures 14 to 17 The described DRX monitoring manager is used to perform this.

[0222] In block 2420, UE 115 can reset the discontinuous reception cycle timer, at least in part, based on this identifier. The operation of block 2420 can be performed according to the methods described herein. In some examples, aspects of the operation of block 2420 can be determined by referring to... Figures 14 to 17 The described DRX timer manager is used for execution.

[0223] Figures 14 to 17 A flowchart illustrating a method 2500 for improved connectivity-mode discontinuous reception wake-up technology according to various aspects of this disclosure is shown. Operation of method 2500 may be implemented by a UE 115 or its components as described herein. For example, operation of method 2500 may be implemented by, as referred to... Figures 14 to 17 The UE DRX manager described herein is used for execution. In some examples, the UE 115 may execute a set of code for controlling the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may use dedicated hardware to perform aspects of the functions described below.

[0224] In block 2505, UE 115 can receive from the base station an indication that resource granting will be transmitted to the UE by the base station when the UE is in a discontinuous reception state. Operation of block 2505 can be performed according to the methods described herein. In some examples, aspects of the operation of block 2505 can be determined by referring to... Figures 14 to 17 The described permission to receive the manager is used to execute this.

[0225] In block 2510, UE 115 can monitor the resource grant at least in part based on receiving an indication regarding the delivery of the resource grant. The operation of block 2510 can be performed according to the methods described herein. In some examples, aspects of the operation of block 2510 can be determined by reference to... Figures 14 to 17 The described permission to receive the manager is used to execute this.

[0226] In box 2515, UE 115 may identify that the UE has not received resource granting as indicated by the received indication. The operation of box 2515 may be performed according to the methods described herein. In some examples, aspects of the operation of box 2515 may be as described in reference to... Figure 1 The description grants permission for the monitoring manager to execute.

[0227] In block 2520, UE 115 can reset the discontinuous reception cycle timer, at least in part, based on this identifier. Operation of block 2520 can be performed according to the methods described herein. In some examples, aspects of the operation of block 2520 can be determined by reference to... ​ The described DRX timer manager is used for execution.

[0228] In some examples, in block 2525, UE 115 may initiate a short discontinuous reception cycle at least in part based on the indication that the UE has not received resource permission indicated by the transmitted indication. Alternatively, in block 2530, UE 115 may initiate a long discontinuous reception cycle at least in part based on the indication that the UE has not received resource permission indicated by the transmitted indication. The operation of blocks 2525 and 2530 may be performed according to the methods described herein. In some examples, aspects of the operation of blocks 2525 and 2530 may be derived from, as referenced ​ The described DRX timer manager is used for execution.

[0229] It should be noted that the methods described above describe possible implementations, and the operations can be rearranged or otherwise modified, and other implementations are also possible. Furthermore, aspects from two or more methods can be combined.

[0230] The techniques described in this document can be used in various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, single-carrier frequency division multiple access (SC-FDMA), and others. The terms "system" and "network" are often used interchangeably. CDMA systems can implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 encompasses the IS-2000, IS-95, and IS-856 standards. Versions of IS-2000 are often referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is often referred to as CDMA2000 1xEV-DO, High-Rate Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other CDMA variants. TDMA systems can implement radio technologies such as Global System for Mobile Communications (GSM).

[0231] OFDMA systems can implement radio technologies such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, and Flash-OFDM. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP LTE and LTE-A Advanced are UMTS versions using E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, NR, and the Global System for Mobile Communications (GSM) are described in documents from an organization called the 3rd Generation Partnership Project (3GPP). CDMA2000 and UMB are described in documents from an organization called 3rd Generation Partnership Project 2 (3GPP2). The technologies described herein can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. Although various aspects of LTE or NR systems may be described for illustrative purposes, and the terms LTE or NR are used in most of the descriptions above, the techniques described herein may also be applied to applications beyond LTE or NR.

[0232] In LTE / LTE-A networks (including those described herein), the term eNB can generally be used to describe a base station. Wireless communication systems, or the systems described herein, can include heterogeneous LTE / LTE-A or NR networks, where different types of eNBs provide coverage across various geographic areas. For example, each eNB, gNB, or base station can provide communication coverage for macrocells, small cells, or other types of cells. Depending on the context, the term "cell" can be used to describe a base station, a carrier or component carrier associated with a base station, or the coverage area of ​​a carrier or base station (e.g., a sector, etc.).

[0233] A base station may include, or may be referred to by those skilled in the art, as a base transceiver station, radio base station, access point, radio transceiver, B-node, eNB, gNB, home B-node, home evolved B-node, or any other suitable term. The geographical coverage area of ​​a base station may be divided into sectors that constitute only a part of that coverage area. One or more wireless communication systems described herein may include different types of base stations (e.g., macro or small cell base stations). The UE described herein may be able to communicate with various types of base stations and network equipment (including macro eNBs, small cell eNBs, gNBs, relay base stations, etc.). There may be overlapping geographical coverage areas using different technologies.

[0234] Macrocells typically cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UEs with service subscriptions to a network provider. In contrast, small cells are low-power base stations that can operate in the same or different (e.g., licensed, unlicensed, etc.) frequency bands as macrocells. Depending on the examples, small cells may include picocells, femtocells, and microcells. A picocell, for example, may cover a smaller geographic area and allow unrestricted access by UEs with service subscriptions to a network provider. A femtocell may also cover a smaller geographic area (e.g., a residential area) and provide restricted access by UEs associated with that femtocell (e.g., UEs in a closed subscriber group (CSG), UEs of users in that residence, etc.). An eNB used for a macrocell may be referred to as a macro eNB. An eNB used for a small cell may be referred to as a small cell eNB, pico eNB, femtocell eNB, or home eNB. An eNB may support one or more (e.g., two, three, four, etc.) cells (e.g., component carriers). A gNB used for macro cells may be referred to as a macro gNB. A gNB used for small cells may be referred to as a small cell gNB, pico gNB, femto gNB, or home gNB. A gNB may support one or more (e.g., two, three, four, etc.) cells (e.g., component carriers). A UE may be able to communicate with various types of base stations and network equipment (including macro eNBs, small cell eNBs, relay base stations, etc.).

[0235] The one or more wireless communication systems described herein can support synchronous or asynchronous operation. For synchronous operation, base stations can have similar frame timings, and transmissions from different base stations can be approximately time-aligned. For asynchronous operation, base stations can have different frame timings, and transmissions from different base stations may not be time-aligned. The techniques described herein can be used for both synchronous and asynchronous operation.

[0236] The downlink transmissions described in this document may also be referred to as forward link transmissions, while the uplink transmissions may also be referred to as reverse link transmissions. Each communication link described in this document—including, for example— ​ and 2 The wireless communication systems 100 and 200 may include one or more carriers, wherein each carrier may be a signal composed of multiple subcarriers (e.g., waveform signals of different frequencies).

[0237] This document, illustrated with reference to the accompanying drawings, describes exemplary configurations but does not represent all examples that can be implemented or fall within the scope of the claims. The term "exemplary" as used herein means "serving as an example, instance, or illustration" and does not mean "superior to" or "outperforms" other examples. This 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 instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0238] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, components of the same type may be distinguished by a dash following the reference numeral and a second reference numeral used to differentiate between similar components. If only the first reference numeral is used in the description, the description may apply to any of the similar components having the same first reference numeral regardless of the second reference numeral.

[0239] The information and signals described herein can be represented using any of a wide variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0240] The various illustrative blocks and modules described herein can be implemented or executed using a general-purpose processor, DSP, ASIC, 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. The general-purpose processor may be a microprocessor, but in alternatives, the processor may be any conventional 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, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, or any other such configuration).

[0241] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations fall within the scope of this disclosure and the appended claims. For example, due to the nature of software, the above-described functions can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Features implementing the functions can also be physically located in various locations, including being distributed such that the parts of the function are implemented at different physical locations. As used herein (including in the claims), the term “and / or” in a list of two or more items means that any one of the listed items can be used alone, or any combination of two or more listed items can be used. For example, if a composition is described as comprising components A, B, and / or C, then the composition can comprise only A; only B; only C; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. Similarly, as used herein (including in the claims), the use of "or" in a list of items (e.g., a list of items accompanied by phrases such as "at least one of" or "one or more of") indicates an inclusive list, such that the phrase, for example, quoting "at least one of" from the list of items refers to any combination of these items, including a single member. As an example, "at least one of A, B, or C" is intended to cover: A, B, C, AB, AC, BC, and ABC, as well as any combination having multiple identical elements (e.g., AA, AAA, AAB, AAC, ABB, ACC, BB, BBB, BBC, CC, and CCC, or any other ordering of A, B, and C).

[0242] Similarly, as used herein, the phrase “based on” should not be interpreted as referencing a closed set of conditions. For example, an exemplary feature described as “based on condition A” may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase “based on” should be interpreted in the same way as the phrase “at least partially based on”.

[0243] Computer-readable media includes both non-transient computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transient storage media can be any available medium accessible to a general-purpose or special-purpose computer. By way of example, and not limitation, non-transient computer-readable media may include RAM, ROM, electrically erasable programmable read-only memory (EEPROM), compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other non-transient medium that can be used to carry or store desired program code in the form of instructions or data structures and is accessible to a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Any connection is also legitimately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then that coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of media. As used in this article, "disk" and "disc" include CDs, laser discs, optical discs, DVDs, floppy disks, and Blu-ray discs, where disks often magnetically reproduce data and discs optically reproduce data using lasers. Combinations of these media are also included within the scope of computer-readable media.

[0244] The description provided herein is intended to enable those skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the universal principles defined herein can be applied to other variations without departing from the scope of this disclosure. Thus, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A user equipment (UE) for wireless communication, comprising: processor; as well as A memory, which is in electronic communication with the processor and stores instructions that can be executed by the processor to cause the UE to perform the following operations: When the UE is in a discontinuous reception state, it receives from the network device an indication that a resource grant will be transmitted from the network device to the UE, wherein the indication is a group indication transmitted to a group of UEs including the UE, indicating that one or more resource grants will be transmitted to one or more UEs in the group of UEs. The resource grant is monitored at least in part based on the received instruction that the resource grant will be transmitted; as well as Receive the resource permission from the network device.

2. The UE of claim 1, wherein the instructions are executable by the processor to cause the UE to: receive, during the same discontinuous reception cycle, the indication that the resource grant will be transmitted by the network device, and the resource grant.

3. The UE of claim 1, wherein the instructions are executable by the processor to further cause the UE to: The discontinuous reception state is initiated at least in part based on a received indication that the resource is permitted to be transmitted, or an indication that data exists to be transmitted on the downlink or uplink, or a combination thereof; and Monitor the indicated resource grants during the enabled state.

4. The UE of claim 3, wherein the instructions are executable by the processor to further cause the UE to: Receive the resource permission; and The discontinuous reception inactive timer is reset at least in part based on the receipt of the resource permission.

5. The UE of claim 3, wherein the instructions are executable by the processor to further cause the UE to: The discontinuous receive cycle timer is reset at least in part based on receiving an indication that the resource is permitted to be transmitted, or an indication that there is data to be transmitted on the downlink or uplink, or a combination thereof.

6. The UE of claim 1, wherein the instructions are executable by the processor to further cause the UE to: Switching is performed between a first discontinuous reception mode and a second discontinuous reception mode associated with the discontinuous reception state.

7. The UE of claim 6, wherein the instructions are executable by the processor to further cause the UE to: Identifying the call mode of the UE; and The switching between the first discontinuous reception mode and the second discontinuous reception mode is based at least in part on the identified traffic pattern.

8. The UE of claim 6, wherein the instructions are executable by the processor to further cause the UE to: Determine that the network device transmits data to the UE according to the first discontinuous reception mode during the previous discontinuous reception cycle; and The operation is based at least in part on the determination to operate in the first discontinuous reception mode in the current discontinuous reception cycle.

9. A method for performing wireless communication at a user equipment (UE), comprising: When the UE is in a discontinuous reception state, it receives from the network device an indication that a resource grant will be transmitted to the UE by the network device, wherein the indication instructs the UE to wake up to listen for the time of the resource grant; as well as The resource grant is monitored at least in part based on the received instruction that the resource grant will be transmitted; as well as Receive the resource permission from the network device.

10. The method of claim 9, wherein the indication that the resource grant will be transmitted by the network device and the resource grant are received during the same discontinuous reception cycle.

11. The method of claim 9, further comprising: The discontinuous reception state is enabled based at least in part on a received indication that the resource is permitted to be transmitted, or an indication that there is data to be transmitted on the downlink or uplink, or a combination thereof. as well as Monitor the indicated resource grants during the enabled state.

12. The method of claim 11, further comprising: Receive the resource permission; as well as The discontinuous reception inactive timer is reset at least in part based on the receipt of the resource permission.

13. The method of claim 11, further comprising: The discontinuous receive loop timer is reset at least in part based on receiving an indication that the resource is permitted to be transmitted, or an indication that there is data to be transmitted on the downlink or uplink, or a combination thereof.

14. The method of claim 9, further comprising: Switching is performed between a first discontinuous reception mode and a second discontinuous reception mode associated with the discontinuous reception state.

15. The method of claim 14, further comprising: Identify the call mode of the UE; as well as The switching between the first discontinuous reception mode and the second discontinuous reception mode is based at least in part on the identified traffic pattern.

16. The method of claim 14, further comprising: It is determined that the network device transmitted data to the UE according to the first discontinuous reception mode during the previous discontinuous reception cycle; as well as The operation is based at least in part on the determination to operate in the first discontinuous reception mode in the current discontinuous reception cycle.

17. A network device for wireless communication, comprising: processor; as well as A memory, which is in electronic communication with the processor and stores instructions that can be executed by the processor to cause the network device to perform the following operations: The identifier buffer contains data for transmission to the user equipment (UE); The UE is informed, at least in part, of a resource grant that will subsequently be transmitted to the UE based on the identifier, wherein the instruction is a group instruction transmitted to a group of user equipment UEs including the UE, indicating that one or more resource grants will be transmitted to one or more UEs in the group of UEs; as well as After transmitting the instruction, the resource grant is transmitted to the UE when the UE is in a discontinuous reception state.

18. The network device of claim 17, wherein the instructions are executable by the processor to cause the network device to: transmit, during the same discontinuous reception cycle, the indication that the resource grant will subsequently be transmitted to the UE, and the resource grant.

19. The network device of claim 17, wherein the instructions are executable by the processor to cause the network device to: determine to schedule the UE during a discontinuous reception cycle, wherein the instructions indicate that the UE will be awake for a period of time.

20. The network device of claim 17, wherein the indication indicates that the UE will wake up for a period of time.

21. The network device of claim 20, wherein the time duration includes the duration of resource granting and inactive periods.

22. The network device of claim 17, wherein the instructions are executable by the processor to further cause the network device to: Determine a discontinuous reception mode for the UE to use in receiving transmissions from the network device; and Transmit to the UE a mode indicator indicating the discontinuous reception mode as determined.

23. The network device of claim 17, wherein the instructions are executable by the processor to further cause the network device to: Identify the group of UEs from among multiple UEs.

24. The network device of claim 17, wherein identifying the group of UEs is based at least in part on the amount of data to be transmitted associated with a corresponding buffer of each of the group of UEs.

25. The network device of claim 17, wherein the instructions are executable by the processor to further cause the network device to: In the starting subframe of a discontinuous reception cycle, an indication is transmitted regarding the resource permission to be transmitted to the UE.

26. A method for wireless communication at a network device, comprising: The identifier buffer contains data for transmission to the user equipment (UE); The UE is informed, at least in part, of the identifier, that a resource grant will subsequently be transmitted to the UE, wherein the instruction is a group instruction transmitted to a group of user equipment UEs including the UE, that one or more resource grants will be transmitted to one or more UEs in the group of UEs; as well as After transmitting the instruction, the resource grant is transmitted to the UE when the UE is in a discontinuous reception state.

27. The method of claim 26, wherein the indication that the resource grant will subsequently be transmitted to the UE, and the resource grant, are transmitted during the same discontinuous reception cycle.

28. The method of claim 26, further comprising: Determine whether the UE should be scheduled during a discontinuous reception cycle; in The instruction indicates that the UE will wake up for a certain period of time.

29. The method of claim 26, wherein the indication indicates that the UE will wake up for a period of time.

30. The method of claim 29, wherein the time duration includes the duration of resource granting and inactive periods.

31. The method of claim 26, further comprising: A discontinuous reception mode is determined for the UE to receive transmissions from the network device; as well as Transmit to the UE a mode indicator indicating the discontinuous reception mode as determined.

32. The method of claim 26, further comprising: Identify the group of UEs from among multiple UEs.

33. The method of claim 32, wherein identifying the group of UEs is based at least in part on the amount of data to be transmitted associated with a corresponding buffer of each UE in the group of UEs.

34. The method of claim 26, further comprising: In the starting subframe of a discontinuous reception cycle, an indication is transmitted regarding the resource permission to be transmitted to the UE.

35. A method for wireless communication at a network device, comprising: The identifier buffer contains data for transmission to the user equipment (UE); The UE is informed, at least in part, of the identifier, that a resource grant will subsequently be transmitted to the UE, wherein the instruction is a group instruction transmitted to a group of user equipment UEs including the UE, that one or more resource grants will be transmitted to one or more UEs in the group of UEs; as well as The discontinuous reception cycle timer is reset at least in part based on the identifier that the resource indicated by the transmitted instruction is not permitted to be received by the UE.

36. The method of claim 35, wherein resetting the discontinuous reception cycle timer further comprises: A short discontinuous reception cycle is initiated, at least in part, based on the identifier that the resource indicated by the transmitted instruction is permitted not to be received by the UE.

37. The method of claim 35, wherein resetting the discontinuous reception cycle timer further comprises: At least in part, a long discontinuous reception loop is initiated based on the identifier that the resource indicated by the transmitted instruction is permitted not to be received by the UE.

38. The method of claim 35, wherein identifying that the resource permission indicated by the transmitted indication has not been received by the UE includes: The network device identifies that the resource indicated by the transmitted instruction is permitted not to be transmitted by the network device.

39. The method of claim 35, wherein identifying that the resource permission indicated by the transmitted instruction has not been received by the UE includes: The UE receives an indication that the resource indicated by the transmitted indication is permitted but was not received by the UE.

40. The method of claim 35, wherein the indication that the resource grant will subsequently be transmitted to the UE, and the resource grant, are transmitted during the same discontinuous reception cycle.

41. The method of claim 35, wherein the indication indicates that the UE will wake up for a period of time.

42. The method of claim 41, wherein the time duration includes the duration of resource granting and inactive periods.

43. The method of claim 35, further comprising: A discontinuous reception mode is determined for the UE to receive transmissions from the network device; as well as Transmit to the UE a mode indicator indicating the discontinuous reception mode as determined.

44. A network device for wireless communication, comprising: processor; as well as A memory, which is in electronic communication with the processor and stores instructions that can be executed by the processor to cause the network device to perform the following operations: The identifier buffer contains data for transmission to the user equipment (UE); The UE is informed, at least in part, of the identifier, that a resource grant will subsequently be transmitted to the UE, wherein the instruction is a group instruction transmitted to a group of user equipment UEs including the UE, that one or more resource grants will be transmitted to one or more UEs in the group of UEs; as well as The discontinuous reception cycle timer is reset at least in part based on the identifier that the resource indicated by the transmitted instruction is not permitted to be received by the UE.

45. The network device of claim 44, wherein the instructions are executable by the processor to cause the network device to reset the discontinuous receive cycle timer by: A short discontinuous reception cycle is initiated, at least in part, based on the identifier that the resource indicated by the transmitted instruction is permitted not to be received by the UE.

46. ​​The network device of claim 44, wherein the instructions are executable by the processor to cause the network device to reset the discontinuous receive cycle timer by: At least in part, a long discontinuous reception loop is initiated based on the identifier that the resource indicated by the transmitted instruction is permitted not to be received by the UE.

47. The network device of claim 44, wherein the instruction is executable by the processor to identify that the resource permission indicated by the transmitted instruction has not been received by the UE: The network device identifies that the resource indicated by the transmitted instruction is permitted not to be transmitted by the network device.

48. The network device of claim 44, wherein the instruction is executable by the processor to identify that the resource permission indicated by the transmitted instruction has not been received by the UE: The UE receives an indication that the resource indicated by the transmitted indication is permitted but was not received by the UE.

49. The network device of claim 44, wherein the instructions are executable by the processor to cause the network device to: transmit, during the same discontinuous reception cycle, the indication that the resource grant will subsequently be transmitted to the UE, and the resource grant.

50. The network device of claim 44, wherein the indication indicates that the UE will wake up for a period of time.

51. The network device of claim 50, wherein the time duration includes the duration of resource granting and inactive periods.

52. The network device of claim 44, wherein the instructions are executable by the processor to: Determine a discontinuous reception mode for the UE to use in receiving transmissions from the network device; and Transmit to the UE a mode indicator indicating the discontinuous reception mode as determined.

53. A method for conducting wireless communication at a user equipment (UE), comprising: When the UE is in a discontinuous reception state, it receives from the network device an indication that a resource grant will be transmitted from the network device to the UE, wherein the indication is a group indication transmitted to a group of user equipment UEs including the UE, indicating that one or more resource grants will be transmitted to one or more UEs in the group of UEs. The resource grant is monitored at least in part based on the received instruction that the resource grant will be transmitted; The identifier indicating that the resource permission indicated by the received instruction was not received by the UE; as well as The discontinuous receive loop timer is reset at least in part based on the identifier.

54. The method of claim 53, wherein resetting the discontinuous reception cycle timer further comprises: Short, discontinuous reception cycles are initiated, at least in part, based on the identifier.

55. The method of claim 53, wherein resetting the discontinuous reception cycle timer further comprises: Long, discontinuous reception cycles are initiated, at least in part, based on the identifier.

56. The method of claim 53, further comprising: Identify the call mode of the UE; as well as The switching between a first discontinuous reception mode and a second discontinuous reception mode associated with the discontinuous reception state is based at least in part on the identified traffic mode.

57. The method of claim 53, further comprising: It is determined that the network device transmitted data to the UE according to a first discontinuous reception mode during the previous discontinuous reception cycle; as well as The operation is based at least in part on the determination to operate in the first discontinuous reception mode in the current discontinuous reception cycle.

58. A user equipment (UE) for wireless communication, comprising: processor; as well as A memory, which is in electronic communication with the processor and stores instructions that can be executed by the processor to cause the UE to perform the following operations: When the UE is in a discontinuous reception state, it receives from the network device an indication that a resource grant will be transmitted from the network device to the UE, wherein the indication is a group indication transmitted to a group of UEs including the UE, indicating that one or more resource grants will be transmitted to one or more UEs in the group of UEs. The resource grant is monitored at least in part based on the received instruction that the resource grant will be transmitted; The identifier indicating that the resource permission indicated by the received instruction was not received by the UE; as well as The discontinuous receive loop timer is reset at least in part based on the identifier.

59. The UE of claim 58, wherein the instructions are executable by the processor to cause the UE to reset the discontinuous reception cycle timer by: Short, discontinuous reception cycles are initiated, at least in part, based on the identifier.

60. The UE of claim 58, wherein the instructions are executable by the processor to cause the UE to reset the discontinuous reception cycle timer by: Long, discontinuous reception cycles are initiated, at least in part, based on the identifier.

61. The UE of claim 58, wherein the instructions are executable by the processor to cause the UE to: Identifying the call mode of the UE; and The switching between a first discontinuous reception mode and a second discontinuous reception mode associated with the discontinuous reception state is based at least in part on the identified traffic mode.

62. The UE of claim 58, wherein the instructions are executable by the processor to cause the UE to: Determine that the network device transmits data to the UE according to a first discontinuous reception mode during the previous discontinuous reception cycle; and The operation is based at least in part on the determination to operate in the first discontinuous reception mode in the current discontinuous reception cycle.

63. A user equipment (UE) for wireless communication, comprising: Apparatus for performing the method as described in any one of claims 9-16 or 53-57.

64. A network device for wireless communication, comprising: Apparatus for performing the method as described in any one of claims 26-43.

65. A non-transient computer-readable storage medium having instructions stored thereon, wherein the instructions are executable by a processor of a user equipment (UE) to perform the method as claimed in any one of claims 9-16 or 53-57.

66. A non-transient computer-readable storage medium having instructions stored thereon, wherein the instructions are executable by a processor of a network device to perform the method as described in any one of claims 26-43.

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