Method for trimming cell measurement reports

Abstract

Certain aspects of the present disclosure provide techniques for wireless communication by a user equipment (UE), including receiving a serving cell measurement configuration when connected to a serving cell of a first radio access technology (RAT); transmitting a serving cell measurement report when a first condition relating to the first measurement of the serving cell is satisfied; receiving a neighbor cell measurement configuration; and deciding whether to send a neighbor cell measurement report based on at least one second condition relating to the second measurement of the serving cell.

Description

Background Art Technical Field

[0001] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for reducing neighbor cell measurement reporting.

[0002] Related technologies

[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts or other similar types of services. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available wireless communication system resources with those users.

[0004] Although wireless communication systems have made tremendous technical progress over the years, challenges still exist. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and wireless receivers. Therefore, there is a continuous desire to improve the technical performance of wireless communication systems, including, for example: improving the speed and data carrying capacity of communications, improving the efficiency of using shared communication media, reducing the power used by transmitters and receivers when performing communications, improving the reliability of wireless communications, avoiding redundant transmission and / or reception and related processing, improving the coverage area of ​​wireless communications, increasing the number and types of devices that can access wireless communication systems, increasing the ability of different types of devices to communicate with each other, increasing the number and types of wireless communication media available for use, etc. Therefore, there is a need to further improve wireless communication systems to overcome the above-mentioned technical challenges and other challenges. Summary of the invention

[0005] One aspect provides a method for wireless communication by a user equipment (UE). The method includes: when connected to a serving cell of a first radio access technology (RAT), receiving a serving cell measurement configuration; when a first condition related to a first measurement of the serving cell is met, sending a serving cell measurement report; receiving a neighbor cell measurement configuration; and deciding whether to send a neighbor cell measurement report based on at least one second condition related to a second measurement of the serving cell.

[0006] Other aspects provide: an apparatus operable to, configured to, or otherwise adapted to perform any one or more of the foregoing methods and / or those described elsewhere herein; a non-transitory computer-readable medium comprising instructions that, when executed by a processor of the apparatus, cause the apparatus to perform the foregoing methods and those described elsewhere herein; a computer program product embodied on a computer-readable storage medium, the computer-readable storage medium comprising code for performing the foregoing methods and those described elsewhere herein; and / or an apparatus comprising components for performing the foregoing methods and those described elsewhere herein. By way of example, an apparatus may include a processing system, a device having a processing system, or a processing system in conjunction with one or more networks.

[0007] For purposes of illustration, the following description and drawings set forth certain features. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings depict certain features of the various aspects described herein and should not be considered to limit the scope of the disclosure.

[0009] Figure 1 An example wireless communication network is depicted.

[0010] Figure 2 An example disaggregated base station architecture is depicted.

[0011] Figure 3 Aspects of an example base station and example user equipment are depicted.

[0012] Figure 4A , Figure 4B , Figure 4C and Figure 4D Various example aspects of data structures for a wireless communication network are described.

[0013] Figure 5A and Figure 5B A flow chart is depicted for conventional inter-frequency and inter-radio access technology (inter-RAT) measurement reporting.

[0014] Figure 6 Depicted are call flows for illustrating pruning neighbor cell measurement reports in accordance with aspects of the present disclosure.

[0015] Figure 7 Example measurement report triggering conditions in accordance with aspects of the present disclosure are depicted.

[0016] Figure 8 A flow diagram of pruning inter-RAT measurement reports in accordance with aspects of the present disclosure is depicted.

[0017] Fig. 9A flow diagram of pruning inter-frequency measurement reports in accordance with aspects of the present disclosure is depicted.

[0018] Fig.10 Depicted are example conditions for detecting rapid changes (ping-pong) between measurement report triggering events in accordance with aspects of the present disclosure.

[0019] Fig.11 Depicted is a flow diagram for updating a trigger condition threshold based on a ping-pong count in accordance with aspects of the present disclosure.

[0020] Fig.12 A method for wireless communication is described.

[0021] Fig.13 Aspects of an example communications device are depicted. DETAILED DESCRIPTION

[0022] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for reducing neighbor cell measurement reporting under certain conditions.

[0023] In current wireless systems, user equipment (UE) can be configured to move (handover) its connection from a serving cell to a neighboring cell when certain conditions are met, based on reference signal (RS) measurements taken to determine signal quality in the serving cell and neighboring cells. This allows the UE to maintain signal quality when moving from one cell to another. To facilitate handover from a serving cell to a neighboring cell, the UE can be configured to measure and report serving cell and / or neighboring cell measurements when certain events are detected.

[0024] Examples of such events include: event A2, which triggers a measurement report when the serving cell measurement (Ms) becomes worse than a threshold; event A4, which triggers a measurement report when the inter-frequency neighbor cell measurement (Mn) becomes better than a threshold; and event B1, which triggers a measurement report when the inter-radio access technology (inter-RAT) neighbor cell measurement (Mn) becomes better than a threshold. These measurements (Ms / Mn) can be reference signal received power (RSRP), reference signal received quality (RSRQ), or RS signal-to-interference and noise ratio (RS-SINR).

[0025] In some cases, anomalies may cause a temporary drop in serving cell measurements, triggering an A2 event and a cell measurement report to the network. Based on the A2 report, the network may configure the UE for inter-RAT (B1) or inter-frequency (A4) neighbor cell measurement reporting. Serving cell measurements (e.g., RSRP) may be restored quickly, while neighbor cell measurements are ongoing. Therefore, even if the serving cell has been restored, the UE will still report neighbor cell measurements. This may allow the network to redirect the UE to a neighbor cell (on another frequency or other RAT). Such unnecessary neighbor cell measurements and reports may waste power and resources on unnecessary handover processes.

[0026] However, aspects of the present disclosure propose an enhanced trigger event that allows the UE to refrain from performing neighbor cell measurements (pruning measurements) and / or refrain from reporting neighbor cell measurements, for example, when the serving cell RSRP recovers. Therefore, the techniques described herein can help avoid wasting power and resources on unnecessary measurements and reports and unnecessary handover procedures.

[0027] Introduction to wireless communication networks

[0028] The techniques and methods described herein can be used in various wireless communication networks. Although various aspects may be described herein using terms commonly associated with 3G, 4G and / or 5G wireless technologies, various aspects of the present disclosure may also be applicable to other communication systems and standards not explicitly mentioned herein.

[0029] Figure 1 An example of a wireless communication network 100 is depicted in which various aspects described herein may be implemented.

[0030] In general, the wireless communication network 100 includes various network entities (alternatively, network elements or network nodes). A network entity is typically a communication device and / or a communication function performed by a communication device (e.g., user equipment (UE), base station (BS), component of a BS, server, etc.). For example, various functions of a network and various devices associated with and interacting with the network may be considered network entities. In addition, the wireless communication network 100 includes ground aspects, such as ground-based network entities (e.g., BS 102), and non-ground aspects, such as satellites 140 and aircraft 145, which may include airborne network entities (e.g., one or more BSs) capable of communicating with other network elements (e.g., ground BSs) and user equipment.

[0031] In the depicted example, the wireless communication network 100 includes a BS 102, a UE 104, and one or more core networks (such as an evolved packet core (EPC) 160 and a 5G core (5GC) network 190) that interoperate to provide communication services over various communication links (including wired and wireless links).

[0032] Figure 1 Various example UEs 104 are depicted, which may more generally include: cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite broadcasts, global positioning systems, multimedia devices, video devices, digital audio players, cameras, game consoles, tablet computers, smart devices, wearable devices, vehicles, electric meters, gas pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, Internet of Things (IoT) devices, always-on (AON) devices, edge processing devices, or other similar devices. UEs 104 may also be more generally referred to as mobile devices, wireless devices, wireless communication devices, stations, mobile stations, subscriber stations, mobile subscriber stations, mobile units, subscriber units, wireless units, remote units, remote devices, access terminals, mobile terminals, wireless terminals, remote terminals, handsets, and others.

[0033] BS 102 wirelessly communicates with (e.g., transmits signals to or receives signals from) UE 104 via communication link 120. Communication link 120 between BS 102 and UE 104 may include uplink (UL) (also referred to as a reverse link) transmissions from UE 104 to BS 102 and / or downlink (DL) (also referred to as a forward link) transmissions from BS 102 to UE 104. In various aspects, communication link 120 may employ multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity.

[0034] BS 102 may generally include: a Node B, an enhanced Node B (eNB), a next generation enhanced Node B (ng-eNB), a next generation Node B (gNB or gNodeB), an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a transmission and reception point, and / or the like. Each of BS 102 may provide communication coverage for a respective geographic coverage area 110, which may sometimes be referred to as a cell, and which may overlap in some cases (e.g., a small cell 102' may have a coverage area 110' that overlaps with a coverage area 110 of a macro cell). For example, a BS may provide communication coverage for a macro cell (covering a relatively large geographic area), a pico cell (covering a relatively small geographic area, such as a stadium), a femto cell (a relatively small geographic area (e.g., a home)), and / or other types of cells.

[0035] Although BS 102 is depicted as a single communication device in various aspects, BS 102 can be implemented in various configurations. For example, one or more components of the base station may be decomposed, including a central unit (CU), one or more distributed units (DU), one or more radio units (RU), a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, to name a few examples. In another example, various aspects of the base station may be virtualized. More generally, a base station (e.g., BS 102) may include components located at a single physical location or components located at various physical locations. In examples where the base station includes components located at various physical locations, the various components may each perform a function so that the various components together implement functionality similar to that of a base station located at a single physical location. In some aspects, a base station including components located at various physical locations may be referred to as a decomposed radio access network architecture (such as an open RAN (O-RAN) or virtualized RAN (VRAN) architecture). Figure 2 An example decomposed base station architecture is depicted and described.

[0036] Different BSs 102 within the wireless communication network 100 may also be configured to support different radio access technologies (such as 3G, 4G, and / or 5G). For example, a BS 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). A BS 102 configured for 5G (e.g., 5G NR or Next Generation RAN (NG-RAN)) may interface with the 5GC 190 via a second backhaul link 184. The BSs 102 may communicate with each other directly or indirectly (e.g., via the EPC 160 or the 5GC 190) over a third backhaul link 134 (e.g., an X2 interface), which may be wired or wireless.

[0037] The wireless communication network 100 may subdivide the electromagnetic spectrum into various categories, frequency bands, channels, or other characteristics. In some aspects, the subdivision is provided based on wavelength and frequency, where frequency may also be referred to as a carrier, subcarrier, channel, tone, or subband. For example, 3GPP currently defines frequency range 1 (FR1) as including 410 MHz-7125 MHz, which is often (interchangeably) referred to as "below 6 GHz". Similarly, 3GPP currently defines frequency range 2 (FR2) as including 24,250 MHz-52,600 MHz, which is sometimes (interchangeably) referred to as "millimeter wave" ("mmW" or "mmWave"). A base station (e.g., a mmWave base station such as BS 180) configured to communicate using mmWave / near mmWave radio bands may utilize beamforming (e.g., 182) with a UE (e.g., 104) to improve path loss and range.

[0038] The communication link 120 between the BS 102 and, for example, the UE 104 may be through one or more carriers, which may have different bandwidths (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, and / or other MHz) and may be aggregated in various aspects. The carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric for DL ​​and UL (e.g., more or fewer carriers may be allocated for DL ​​than for UL).

[0039] Communications using higher frequency bands may have higher path loss and shorter range than communications at lower frequencies. Figure 1 180) can utilize beamforming 182 with UE 104 to improve path loss and range. For example, BS 180 and UE 104 can each include multiple antennas, such as antenna elements, antenna panels and / or antenna arrays, to facilitate beamforming. In some cases, BS 180 can send beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 can receive beamformed signals from BS 180 in one or more receive directions 182". UE 104 can also send beamformed signals to BS 180 in one or more transmit directions 182". BS 180 can also receive beamformed signals from UE 104 in one or more receive directions 182'. BS 180 and UE 104 can then perform beam training to determine the best receive direction and transmit direction for each of BS 180 and UE 104. It is worth noting that the transmit direction and receive direction of BS 180 can be the same or different. Similarly, the transmit direction and receive direction of UE 104 may be the same or different.

[0040] Wireless communication network 100 also includes Wi-Fi AP 150 that communicates with Wi-Fi stations (STAs) 152 via communication links 154 in, for example, the 2.4 GHz and / or 5 GHz unlicensed spectrum.

[0041] Certain UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), a physical sidelink control channel (PSCCH), and / or a physical sidelink feedback channel (PSFCH).

[0042] The EPC 160 may include various functional components, including: a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and / or a packet data network (PDN) gateway 172, such as in the depicted example. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. In general, the MME 162 provides bearer and connection management.

[0043] Generally speaking, user Internet Protocol (IP) packets are delivered through the Serving Gateway 166, which itself is connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation and other functions. The PDN Gateway 172 and the BM-SC 170 are connected to the IP Services 176, which may include, for example, the Internet, an Intranet, an IP Multimedia Subsystem (IMS), a Packet Switched (PS) streaming media service, and / or other IP services.

[0044] The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS delivery, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and / or may be used to schedule MBMS delivery. The MBMS Gateway 168 may be used to distribute MBMS services to BSs 102 belonging to a multicast broadcast single frequency network (MBSFN) area broadcasting a specific service, and / or may be responsible for session management (start / stop) and for collecting eMBMS related charging information.

[0045] 5GC 190 may include various functional components, including: access and mobility management function (AMF) 192, other AMFs 193, session management function (SMF) 194, and user plane function (UPF) 195. AMF 192 may communicate with unified data management (UDM) 196.

[0046] AMF 192 is a control node that handles signaling between UE 104 and 5GC 190. AMF 192 provides, for example, Quality of Service (QoS) flow and session management.

[0047] Internet Protocol (IP) packets are delivered through UPF 195, which is connected to IP Services 197 and provides IP address allocation for UEs and other functions for 5GC 190. IP Services 197 may include, for example, the Internet, Intranet, IMS, PS streaming services, and / or other IP services.

[0048] In various aspects, a network entity or network node may be implemented as a converged base station, a decomposed base station, a component of a base station, an integrated access and backhaul (IAB) node, a relay node, a sidelink node, to name a few examples.

[0049] Figure 2 An example disaggregated base station 200 architecture is depicted. The disaggregated base station 200 architecture may include one or more central units (CUs) 210 that may communicate directly with a core network 220 via a backhaul link, or indirectly with the core network 220 through one or more disaggregated base station units, such as a near real-time (near-RT) RAN intelligent controller (RIC) 225 via an E2 link, or a non-real-time (non-RT) RIC 215 associated with a service management and orchestration (SMO) framework 205, or both. The CU 210 may communicate with one or more distributed units (DUs) 230 via respective midhaul links, such as an F1 interface. The DU 230 may communicate with one or more radio units (RUs) 240 via respective fronthaul links. The RU 240 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 240.

[0050] Each of the units (e.g., CU 210, DU 230, RU 240, and near-RT RIC 225, non-RT RIC 215, and SMO framework 205) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to the communication interface of the unit may be configured to communicate with one or more of the other units via a transmission medium. For example, the units may include a wired interface configured to receive or send signals to one or more of the other units via a wired transmission medium. Additionally or alternatively, the unit may include a wireless interface that may include a receiver, transmitter, or transceiver (such as a radio frequency (RF) transceiver) configured to receive or send signals, or both, to one or more of the other units on a wireless transmission medium.

[0051] In some aspects, CU 210 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 210. CU210 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP)), control plane functionality (e.g., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 210 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 210 may be implemented to communicate with DU 230 for network control and signaling.

[0052] DU 230 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 240. In some aspects, DU 230 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) at least in part according to a functional split such as those defined by the 3rd Generation Partnership Project (3GPP). In some aspects, DU 230 may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 230 or with control functions hosted by CU 210.

[0053] The lower layer functionality may be implemented by one or more RUs 240. In some deployments, the RU 240 controlled by the DU 230 may correspond to a logical node that hosts RF processing functions or low PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on functional splitting (such as lower layer functional splitting). In such an architecture, the RU 240 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 240 may be controlled by the corresponding DU 230. In some scenarios, this configuration may enable the DU 230 and CU 210 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0054] The SMO framework 205 may be configured to support RAN deployment and configuration of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 205 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 205 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 290) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 210, DU 230, RU 240, and near-RT RIC 225. In some specific implementations, the SMO framework 205 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 211) via the O1 interface. Additionally, in some specific implementations, the SMO framework 205 may communicate directly with one or more RUs 240 via the O1 interface. The SMO framework 205 may also include a non-RT RIC 215 that is configured to support the functionality of the SMO framework 205 .

[0055] The non-RT RIC 215 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 225. The non-RT RIC 215 may be coupled to or in communication with the near-RT RIC 225 (such as via an A1 interface). The near-RT RIC 225 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 210, one or more DUs 230, or both, and the O-eNB with the near-RT RIC 225.

[0056] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 225, the non-RT RIC 215 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 225 and may be received from a non-network data source or from a network function at the SMO framework 205 or the non-RT RIC 215. In some examples, the non-RT RIC 215 or the near-RT RIC 225 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 215 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 205 (such as via reconfiguration of O1) or via creation of RAN management policies (such as A1 policies).

[0057] Figure 3 Aspects of an example BS 102 and UE 104 are depicted.

[0058] In general, BS 102 includes various processors (e.g., 320, 330, 338, and 340), antennas 334a-334t (collectively 334), transceivers 332a-332t (collectively 332) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., data source 312) and wireless reception of data (e.g., data sink 339). For example, BS 102 can transmit and receive data between BS 102 and UE 104. BS 102 includes a controller / processor 340 that can be configured to implement various functions described herein related to wireless communications.

[0059] In general, the UE 104 includes various processors (e.g., 358, 364, 366, and 380), antennas 352a-352r (collectively 352), transceivers 354a-354r (collectively 354) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., retrieved from a data source 362) and wireless reception of data (e.g., provided to a data sink 360). The UE 104 includes a controller / processor 380 that can be configured to implement various functions described herein related to wireless communications.

[0060] Regarding example downlink transmissions, BS 102 includes a transmit processor 320 that can receive data from a data source 312 and control information from a controller / processor 340. The control information can be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical HARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), and / or others. In some examples, the data can be for a physical downlink shared channel (PDSCH).

[0061] The transmit processor 320 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 320 may also generate reference symbols, such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH demodulation reference signal (DMRS), and a channel state information reference signal (CSI-RS).

[0062] The transmit (TX) multiple-input multiple-output (MIMO) processor 330 may perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, and / or reference symbols, where applicable, and may provide an output symbol stream to a modulator (MOD) in a transceiver 332a-332t. Each modulator in the transceiver 332a-332t may process a corresponding output symbol stream to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from the modulators in the transceivers 332a-332t may be transmitted via antennas 334a-334t, respectively.

[0063] To receive downlink transmissions, UE 104 includes antennas 352a-352r that can receive downlink signals from BS 102 and can provide received signals to demodulators (DEMODs) in transceivers 354a-354r, respectively. Each demodulator in transceivers 354a-354r can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator can further process the input samples to obtain received symbols.

[0064] A MIMO detector 356 may obtain received symbols from all demodulators in transceivers 354a-354r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 358 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 104 to a data sink 360, and provide decoded control information to a controller / processor 380.

[0065] With respect to example uplink transmissions, the UE 104 also includes a transmit processor 364 that may receive and process data from a data source 362 (e.g., for a PUSCH) and control information from a controller / processor 380 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 364 may also generate reference symbols for reference signals (e.g., a sounding reference signal (SRS)). The symbols from the transmit processor 364 may be pre-decoded by a TX MIMO processor 366, if applicable, further processed by a modulator in the transceivers 354a-354r (e.g., for SC-FDM), and transmitted to the BS 102.

[0066] At BS 102, uplink signals from UE 104 may be received by antennas 334a-334t, processed by demodulators in transceivers 332a-332t, detected by MIMO detector 336 if applicable, and further processed by receive processor 338 to obtain decoded data and control information transmitted by UE 104. Receive processor 338 may provide decoded data to data sink 339 and decoded control information to controller / processor 340.

[0067] Memories 342 and 382 may store data and program codes for BS 102 and UE 104, respectively.

[0068] Scheduler 344 may schedule UEs for data transmission on the downlink and / or uplink.

[0069] In various aspects, the BS 102 may be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as outputting data from a data source 312, a scheduler 344, a memory 342, a transmit processor 320, a controller / processor 340, a TX MIMO processor 330, a transceiver 332a-332t, an antenna 334a-334t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from an antenna 334a-334t, a transceiver 332a-332t, a RX MIMO detector 336, a controller / processor 340, a receive processor 338, a scheduler 344, a memory 342, and / or other aspects described herein.

[0070] In various aspects, the UE 104 may also be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as outputting data from a data source 362, a memory 382, ​​a transmit processor 364, a controller / processor 380, a TX MIMO processor 366, a transceiver 354a-354t, an antenna 352a-352t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from an antenna 352a-352t, a transceiver 354a-354t, a RX MIMO detector 356, a controller / processor 380, a receive processor 358, a memory 382, ​​and / or other aspects described herein.

[0071] In some aspects, the processor may be configured to perform various operations (such as those associated with the methods described herein) and send (output) data to or receive (obtain) data from another interface configured to send or receive data, respectively.

[0072] Figure 4A , Figure 4B , Figure 4C and Figure 4D Describes a method for use in a wireless communication network such as Figure 1 Various aspects of the data structure of the wireless communication network 100).

[0073] Specifically, Figure 4A is a diagram 400 illustrating an example of a first subframe within a 5G (e.g., 5G NR) frame structure, Figure 4B is a diagram 430 illustrating an example of a DL channel within a 5G subframe, Figure 4C is a diagram 450 illustrating an example of a second subframe within a 5G frame structure, and Figure 4D FIG480 is a diagram illustrating an example of UL channels within a 5G subframe.

[0074] Wireless communication networks can utilize Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) on both the uplink and downlink. Such systems can also support half-duplex operation using Time Division Duplex (TDD). OFDM and Single Carrier Frequency Division Multiplexing (SC-FDM) can be used to maximize the system bandwidth (e.g., Figure 4B and Figure 4D The RF (depicted) is divided into multiple orthogonal subcarriers. Each subcarrier can be modulated with data. Modulation symbols can be transmitted in the frequency domain using OFDM and / or in the time domain using SC-FDM.

[0075] The wireless communication frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers, subframes within the set of subcarriers are dedicated to either DL or UL. The wireless communication frame structure may also be time division duplex (TDD), where for a particular set of subcarriers, subframes within the set of subcarriers are dedicated to both DL and UL.

[0076] exist Figure 4A and Figure 4C In the wireless communication frame structure, TDD is used, where D is DL, U is UL, and X is used flexibly between DL / UL. The UE can be configured with a time slot format (dynamically configured by DL control information (DCI) or semi-statically / statically configured by radio resource control (RRC) signaling) through the received time slot format indicator (SFI). In the depicted example, the 10ms frame is divided into 10 equally sized 1ms subframes. Each subframe may include one or more time slots. In some examples, each time slot may include 7 or 14 symbols, depending on the time slot format. The subframe may also include a micro-time slot, which generally has fewer symbols than the entire time slot. Other wireless communication technologies may have different frame structures and / or different channels.

[0077] In certain aspects, the number of time slots within a subframe is based on the time slot configuration and the parameter set. For example, for time slot configuration 0, different parameter sets (μ) 0 to 5 allow for 1, 2, 4, 8, 16, and 32 time slots per subframe, respectively. For time slot configuration 1, different parameter sets 0 to 2 allow for 2, 4, and 8 time slots per subframe, respectively. Thus, for time slot configuration 0 and parameter set μ, there are 14 symbols / time slot and 2μ time slots / subframe. The subcarrier spacing and symbol length / duration are a function of the parameter set. The subcarrier spacing may be equal to 2 μ × 15kHz, where μ is parameter set 0 to 5. Thus, parameter set μ=0 has a subcarrier spacing of 15kHz, and parameter set μ=5 has a subcarrier spacing of 480kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figure 4A , Figure 4B , Figure 4C and Figure 4D An example is provided for slot configuration 0 with 14 symbols per slot and parameter set μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs.

[0078] like Figure 4A , Figure 4B , Figure 4C and Figure 4DAs depicted, a resource grid may be used to represent a frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending, for example, over 12 consecutive subcarriers. The resource grid is divided into a plurality of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0079] like Figure 4A As illustrated, some REs carry data for UEs (e.g. Figure 1 and Figure 3 The RS may include a demodulation RS (DMRS) and / or a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and / or a phase tracking RS (PT-RS).

[0080] Figure 4B Examples of various DL channels within a subframe of a frame are illustrated.The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs), each CCE comprising, for example, nine RE Groups (REGs), each REG comprising, for example, four consecutive REs in an OFDM symbol.

[0081] The primary synchronization signal (PSS) may be in symbol 2 of a particular subframe of a frame. The PSS is transmitted by a UE (e.g., Figure 1 and Figure 3 104) is used to determine subframe / symbol timing and physical layer identification.

[0082] A Secondary Synchronization Signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing.

[0083] Based on the physical layer identifier and the physical layer cell identifier group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DMRS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block. The MIB provides the system frame number (SFN) and the number of RBs in the system bandwidth. The physical downlink shared channel (PDSCH) carries user data, broadcast system information (such as system information blocks (SIBs)) that is not sent via the PBCH, and / or paging messages.

[0084] As in Figure 4CAs illustrated, some REs carry DMRS for channel estimation at the base station (indicated as R for a particular configuration, but other DMRS configurations are possible). The UE may send a DMRS for PUCCH and a DMRS for PUSCH. The PUSCH DMRS may be sent, for example, in the first one or two symbols of the PUSCH. The PUCCH DMRS may be sent in different configurations depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used. UE 104 may send a sounding reference signal (SRS). The SRS may be sent, for example, in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the teeth of the comb. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0085] Figure 4D Examples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), and HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0086] Overview of measurement report triggering events

[0087] As noted above, to facilitate handover from a serving cell to a neighboring cell, a UE may be configured to measure and report serving cell and / or neighboring cell measurements upon detection of certain events.

[0088] For example, when the serving cell deteriorates and meets the A2 entry condition, an A2 measurement report is triggered. The entry condition is as follows:

[0089] Ms+Hys <Thresh,

[0090] Where Ms is the measurement result of the serving cell, Hys is the hysteresis parameter of the event, and Thresh is the threshold parameter of the event. A2 reporting can continue until the leaving condition is met:

[0091] Ms-Hys>Thresh.

[0092] When the serving cell deteriorates and meets the B1 entry condition, a B1 measurement report may be triggered. The entry condition is as follows:

[0093] Mn+Ofn-Hys>Thresh,

[0094] Where Mn is the measurement result of the inter-RAT neighbor cell, Ofn is the frequency specific offset of the frequency of the inter-RAT neighbor cell, Hys is the hysteresis parameter of the event, and Thresh is the threshold parameter of the event. B1 reporting can continue until the leaving condition is met:

[0095] Mn+Ofn+Hys <Thresh。

[0096] Similarly, when the serving cell deteriorates and meets the A4 entry condition, an A4 measurement report may be triggered. The entry condition is as follows:

[0097] Mn+Ofn+Ocn-Hys>Thresh,

[0098] Where Mn is the measurement result of the inter-RAT neighbor cell, Ofn is the frequency specific offset of the frequency of the inter-RAT neighbor cell, Ocn is the cell specific offset of the neighbor cell and is set to zero if not configured for the neighbor cell, Hys is the hysteresis parameter for the event, and Thresh is the threshold parameter for the event. B1 reporting can continue until the leaving condition is met:

[0099] Mn+Ofn+Ocn+Hys <Thresh。

[0100] In some cases, the anomaly may cause a temporary drop in serving cell measurements, triggering an A2 event and a cell measurement report to the network. Based on the A2 report, the network may configure the UE for inter-RAT (B1) or inter-frequency (A4) neighbor cell measurement reporting. Serving cell measurements (e.g., RSRP) may be resumed quickly while neighbor cell measurements are ongoing. Therefore, even if the serving cell has recovered, the UE will still report neighbor cell measurements. This may enable the network to redirect the UE to a neighbor cell (on another frequency or other RAT). Such unnecessary neighbor cell measurements and reporting may waste power and resources on unnecessary handover processes.

[0101] Examples of such events include: event A2, which triggers a measurement report when the serving cell measurement (Ms) becomes worse than a threshold; event A4, which triggers a measurement report when the inter-frequency neighbor cell measurement (Mn) becomes better than a threshold; and event B1, which triggers a measurement report when the inter-radio access technology (inter-RAT) neighbor cell measurement (Mn) becomes better than a threshold. These measurements (Ms / Mn) can be reference signal received power (RSRP), reference signal received quality (RSRQ), or RS signal-to-interference and noise ratio (RS-SINR).

[0102] As noted above, certain anomalies in wireless communications may cause the cell level RSRP to drop, causing the UE to report A2 measurements. In response, the network entity may configure the UE to perform inter-frequency (A4) or inter-RAT (B1) measurements.

[0103] Serving cell measurements (e.g., RSRP) may be resumed very quickly, while neighbor cell measurements are ongoing. Therefore, even if the serving cell has been restored, the UE will still report neighbor cell measurements. This may cause the network to redirect the UE to a neighbor cell (on another frequency or other RAT). Such unnecessary neighbor cell measurements and reporting may waste power and resources on unnecessary handover procedures.

[0104] Aspects related to reducing neighbor cell measurement reports

[0105] Aspects of the present disclosure propose mechanisms that allow a UE to refrain from performing and / or reporting neighbor cell measurements when certain conditions are met (eg, modified triggering events).

[0106] For example, when the serving cell RSRP recovers to be above a threshold (absolute or relative to neighboring cell measurements), the UE may suppress measurements and / or report cell measurements. Thus, the techniques described herein may help avoid wasting power and resources on unnecessary measurements and reports and unnecessary handover procedures.

[0107] The technique presented in this paper can be considered as Figure 5A 1 is an enhancement of the conventional inter-frequency measurement reporting procedure shown. As shown, in the conventional inter-frequency reporting procedure, after the A2 entry conditions are met, the UE may report A2 measurements. Based on those measurements, the network may transmit an inter-frequency measurement configuration to the UE. The UE may then perform inter-frequency measurements and reports. As will be described in more detail below, the techniques proposed herein may result in pruning of these inter-frequency measurements and / or the UE deciding not to report these inter-frequency measurements (e.g., if the serving cell recovers).

[0108] The technique presented in this paper can be considered as Figure 5B 1 is an enhancement to the conventional inter-RAT measurement reporting procedure shown. As shown, in the conventional inter-RAT reporting procedure, after the A2 entry conditions are met, the UE may report A2 measurements. Based on those measurements, the network may transmit an inter-RAT measurement configuration to the UE. The UE may then perform inter-RAT measurements and reporting. As will be described in more detail below, the techniques presented herein may result in pruning of these inter-RAT measurements and / or a UE deciding not to report these inter-RAT measurements (e.g., if the serving cell recovers).

[0109] According to certain aspects of the present disclosure, before transmitting an inter-RAT (B1) or inter-frequency (A4) measurement report, the UE may check the serving cell RSRP and compare with the candidate (inter-RAT or inter-frequency) neighbor cell measurements. If the serving cell is better, the UE may decide to stay in the serving cell and therefore not transmit measurement reports that may otherwise result in an unnecessary / unwanted handover.

[0110] For reference Figure 6 The call flow diagram 600 may be used to understand the technique for pruning neighbor cell measurements and / or reporting.

[0111] This example assumes that the UE is in a connected state. For example, the UE may be connected to a network entity on FR1 or FR2, and the network entity may configure A2 measurements.

[0112] As described above, the UE serving cell may have reduced RSRP, satisfying the A2 event condition, triggering the UE to transmit an A2 measurement report (MR) to the network entity.

[0113] Based on the A2 measurement report, the network entity may configure the UE for neighbor cell measurement. For example, if the UE is connected via NRFR1, the network may configure the UE to perform A4 inter-frequency measurement reporting. Alternatively, the network may configure the UE to perform A4 inter-frequency measurement reporting or B1 inter-RAT measurement reporting.

[0114] However, as shown, if one or more conditions are met (e.g., if the serving cell recovers), the UE may decide not to transmit a neighbor cell measurement report. Although this example has been described for pruning B1 inter-RAT measurements, these techniques may also be applicable to other inter-RAT scenarios (e.g., LTE->NR, NR->LTE, and LTE->WCDMA) and other inter-frequency scenarios (e.g., NR SA FR1->FR2, NR SA FR2->FR1, LTE inter-frequency).

[0115] In some cases, the conditions for the decision to measure and / or report inter-RAT or inter-frequency measurement reports may depend on the serving cell measurement. For example, in one case, the UE may decide to prune (or even not measure) if the serving cell measurement satisfies the following equation:

[0116] Ms-Hys_A2-delta>Thresh_A2,

[0117] Where Hys_A2 and Thresh_A2 are the Hys and Thresh of the A2 process described above. In other words, if the serving cell measurement is greater than the sum of the Thresh_A2 value, the Hys_A2 parameter and the delta value of A2, the UE can skip the B1 / A4 measurement completely. On the other hand, if:

[0118] Ms-Mn>Thresh,

[0119] The UE may still perform inter-RAT / inter-frequency neighbor cell measurements, but may decide not to report. In the above formula, the "delta" parameter and the new Thresh parameter may be independent. In some cases, each may be defined by the UE using the delta_irat, Thresh_irat, delta_interf, and Thresh_interf parameters.

[0120] Figure 7 An example timeline of RSRP measured on a serving cell is illustrated. As shown, the serving cell RSRP drops below the delta threshold Thresh, causing the UE to report an A2 measurement report to the network. This may trigger the network to configure the UE for B1 or A4 measurement and reporting.

[0121] In the illustrated example, RSRP may increase, exceeding the A2 entry and exit conditions and the delta threshold. In response to the RSRP increase being greater than the delta threshold, the UE may not report B1 / A4 measurements. In some cases, the UE may also end the measurement completely.

[0122] Figure 8 A flowchart describing UE inter-RAT measurement pruning according to certain aspects of the present disclosure is illustrated. Figure 5A When compared to the conventional inter-RAT measurement procedure shown, it can be seen that additional conditions are tested before performing and / or reporting the inter-RAT measurement report.

[0123] At 805, the UE reports an A2 measurement report and receives an inter-RAT measurement configuration in response. Then, at 810, the UE may evaluate whether the serving cell RSRP satisfies the Thresh_A2 condition:

[0124] Ms-Hys_A2-delta_irat>Thresh_A2.

[0125] If RSRP satisfies the condition, the UE may prune / end inter-RAT measurement reporting at 815. If RSRP does not satisfy the condition, the UE may evaluate (at 820) whether the serving cell RSRP satisfies the Thresh_irat condition:

[0126] Ms-Mn>Thresh_irat.

[0127] If RSRP satisfies the Thresh_irat condition, the UE may not prune the measurement, but it may refrain from reporting the inter-RAT measurement to the network entity at 825. If the Thresh_irat condition is not met, the UE may measure and report as usual (at 830).

[0128] Fig. 9 A flow chart describing UE inter-frequency measurement pruning according to certain aspects of the present disclosure is illustrated. At 805, the UE reports an A2 measurement report and receives an inter-frequency measurement configuration in response. Then, at 910, the UE may evaluate whether the serving cell RSRP satisfies the Thresh_A2 condition:

[0129] Ms-Hys_A2-delta_interf>Thresh_A2.

[0130] If RSRP satisfies the condition, the UE may prune / end the inter-frequency measurement report at 915. If RSRP does not satisfy the condition, the UE may evaluate (at 920) whether the serving cell RSRP satisfies the Thresh_interf condition:

[0131] Ms-Mn>Thresh_interf.

[0132] If RSRP satisfies the Thresh_interf condition, the UE may not prune the measurement, but it may refrain from reporting the inter-frequency measurement to the network entity at 925. If the Thresh_interf condition is not met, the UE may measure and report as usual (at 930).

[0133] like Fig.10 As shown, in some cases, the serving cell RSRP may change rapidly such that the A2 leave condition is met shortly after the A2 entry condition is met, resulting in ping-pong (between sending A2 reports and not reporting).

[0134] In some cases, the delta values ​​(delta_irat and delta_interf) used for the above conditions may depend on the time period (T PP). The initial values ​​of delta_irat and delta_interf may be configurable. Thresh_irat may be configurable by the UE and may be independent for different inter-RAT mobilities (e.g., NR to LTE, LTE to NR, LTE to WCDMA). Thresh_interf may be configurable by the UE and may be independent for different inter-RAT mobilities (e.g., FR2 to FR1, FR1 to FR2, FDD to TDD, TDD to FDD). To calculate each delta, the delta value may be set to delta_initial when the UE meets the first entry A2 condition.

[0135] To account for ping-pong, delta may be calculated as delta_initial+ppCount*delta_offset. In some cases, the UE may keep a count of the number of ping-pong occurrences. In the illustrated example, after ping-pong, RSRP increases and satisfies the leaving condition for a specific period of time Tnpp and may be considered out of ping-pong state.

[0136] The parameter ppCount is a ping-pong count parameter. When the UE satisfies the A2 entry condition multiple times during the trigger time (TTT) and satisfies the A2 exit condition during the TTT for a specific time t less than the ping-pong time period Tpp, ppCount is determined. Satisfying both the entry condition and the exit condition multiple times during the time period may indicate a ping-pong state, where the RSRP of the serving cell is increasing and decreasing rapidly, triggering a repeated measurement process for both the serving cell and the neighboring cell. The A2 entry condition during the TTT is configured by the network entity (e.g., A2 timeToTrigger). For a specific time t exceeding the time period Tnpp for leaving ping-pong, the UE may exit the ping-pong condition, and then the UE may continue to satisfy the A2 exit condition.

[0137] Fig.11 A flow chart illustrating how to detect and count ping pong events is illustrated. At 1105, the UE may set the initial ppCount to zero. At 1110, the UE evaluates whether a ping pong is detected. If the UE determines that it has detected a ping pong, the UE increments the ppCount by one (at 1115).

[0138] If (1120) the UE detects that it is out of the ping-pong state (e.g., when the serving cell RSRP remains above a threshold period of time Tnpp), the UE may reset the value of ppCount to zero. For different mobility scenarios, Tpp, Tnpp, delta_initial, and delta_offset may be configured with different values. In some cases, the initial value of ppCount is zero.

[0139] As described herein, certain aspects of the present disclosure may reduce redundant inter-RAT / inter-frequency reporting and may reduce UE mobility (e.g., UE handover, UE redirection). Additionally, implementations may avoid service interruption. When a serving cell is restored, although there may be ongoing inter-RAT / inter-frequency measurements, associated reports and / or future measurements may be removed to ensure that the UE can stay in the current serving cell without wasting power and resources. Implementations may also reduce inter-IRAT / inter-frequency ping-pong mobility (e.g., FR2 to FR1 to FR2).

[0140] Example Operation of User Equipment

[0141] Fig.12 It is shown that a UE (such as Figure 1 and Figure 3 An example of a method 1200 for performing wireless communications with a UE 104).

[0142] Method 1200 begins at step 1205, where, while connected to a serving cell of a first RAT, a serving cell measurement configuration is received. In some cases, the operation of this step refers to or may be referred to as Fig.13 The described circuits for receiving and / or codes for receiving are performed.

[0143] Then, method 1200 proceeds to step 1210, where a serving cell measurement report is sent when a first condition involving a first measurement of a serving cell is met. In some cases, the operation of this step refers to or may be referred to as Fig.13 The described circuits for sending and / or codes for sending are performed.

[0144] Then, method 1200 proceeds to step 1215, where a neighbor cell measurement configuration is received. In some cases, the operation of this step refers to or can be referred to as Fig.13 The described circuits for receiving and / or codes for receiving are performed.

[0145] Then, method 1200 proceeds to step 1220, where a decision is made whether to send a neighbor cell measurement report based on at least one second condition related to a second measurement of the serving cell. In some cases, the operation of this step refers to or can be referred to as Fig.13 The described circuits for deciding and / or codes for deciding are implemented.

[0146] In some aspects, the neighbor cell measurement configuration configures the UE for inter-RAT measurements.

[0147] In some aspects, the neighbor cell measurement configuration configures the UE for inter-frequency measurements.

[0148] In some aspects, the first condition is considered satisfied when the serving cell measurement is less than a first threshold indicated via the serving cell configuration.

[0149] In some aspects, the second condition is considered satisfied when the second serving cell measurement exceeds a second threshold.

[0150] In some aspects, determining includes determining to refrain from sending the neighbor cell measurement report when a second condition is met.

[0151] In some aspects, the method 1200 further includes: when the second condition is met, deciding not to perform neighbor cell measurement. In some cases, the operation of this step refers to or can be referred to as Fig.13 The described circuits for deciding and / or codes for deciding are implemented.

[0152] In some aspects, the method 1200 further includes: maintaining a count of the number of times the serving cell measurement satisfies both the first condition and another condition during the first time period, the other condition being considered satisfied when the serving cell measurement is greater than a third threshold indicated via the serving cell configuration. In some cases, the operation of this step refers to or may be performed by reference to Fig.13 The described circuit for holding and / or code for holding are executed.

[0153] In some aspects, method 1200 further includes: calculating a value of a second threshold based on the count. In some cases, the operation of this step refers to or can be performed by reference to Fig.13 The described circuits for calculation and / or codes for calculation are performed.

[0154] In some aspects, the method 1200 may also include: resetting the count when the serving cell measurement meets other conditions for a second time period. In some cases, the operation of this step refers to or may be referred to as Fig.13 The described circuit for resetting and / or code for resetting are performed.

[0155] In some aspects, the second condition is deemed satisfied when the second serving cell measurement exceeds a neighbor cell measurement second threshold.

[0156] In some aspects, determining includes determining to refrain from sending the neighbor cell measurement report when a second condition is met.

[0157] In one aspect, method 1200 or any aspect related thereto may be performed by an apparatus such as Fig.13 The method 1200 is performed by a communication device 1300 that includes various components operable to, configured to, or adapted to perform the method 1200. The communication device 1300 is described in more detail below.

[0158] Please note that Fig.12 This is merely one example of a method, and other methods including fewer, additional, or alternative steps may also be consistent with the present disclosure.

[0159] Example Communication Device

[0160] Fig.13 Depicted are aspects of an example communication device 1300. In some aspects, the communication device 1300 is user equipment, such as described above with respect to Figure 1 and Figure 3 UE 104 is described.

[0161] The communication device 1300 includes a processing system 1305 coupled to a transceiver 1385 (e.g., a transmitter and / or a receiver). The transceiver 1385 is configured to transmit and receive signals for the communication device 1300, such as various signals as described herein, via an antenna 1390. The processing system 1305 may be configured to perform processing functions for the communication device 1300, including processing signals received and / or to be transmitted by the communication device 1300.

[0162] The processing system 1305 includes one or more processors 1310. In various aspects, such as for Figure 3 As described, the one or more processors 1310 may represent one or more of the receive processor 358, the transmit processor 364, the TX MIMO processor 366, and / or the controller / processor 380. The one or more processors 1310 are coupled to the computer-readable medium / memory 1345 via the bus 1380. In some aspects, the computer-readable medium / memory 1345 is configured to store instructions (e.g., computer-executable code) that, when executed by the one or more processors 1310, cause the one or more processors 1310 to perform operations for the Fig.12 The described method 1200 or any aspect related thereto. Note that references to a processor performing a function of the communication device 1300 may include one or more processors 1310 performing that function of the communication device 1300 .

[0163] In the depicted example, computer readable medium / memory 1345 stores code (e.g., executable instructions) such as code for receiving 1350, code for sending 1355, code for deciding 1360, code for holding 1365, code for calculating 1370, and code for resetting 1375. Processing of code for receiving 1350, code for sending 1355, code for deciding 1360, code for holding 1365, code for calculating 1370, and code for resetting 1375 may cause communication device 1300 to perform operations for receiving, sending, deciding, holding, calculating, and resetting. Fig.12The described method 1200 or any aspect related thereto.

[0164] The one or more processors 1310 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1345, including circuits such as circuits for receiving 1315, circuits for sending 1320, circuits for deciding 1325, circuits for holding 1330, circuits for calculating 1335, and circuits for resetting 1340. Processing by the circuits for receiving 1315, the circuits for sending 1320, the circuits for deciding 1325, the circuits for holding 1330, the circuits for calculating 1335, and the circuits for resetting 1340 may enable the communication device 1300 to perform operations for the communication device 1300. Fig.12 The described method 1200 or any aspect related thereto.

[0165] The various components of the communication device 1300 may be provided for performing Fig.12 The described method 1200 or any aspect thereof may include means for sending, transmitting, or outputting for sending. Figure 3 The illustrated transceiver 354 and / or antenna 352 of the UE 104, and / or Fig.13 The transceiver 1385 and antenna 1390 of the communication device 1300 in FIG. 1 may include Figure 3 The illustrated transceiver 354 and / or antenna 352 of the UE 104, and / or Fig.13 The transceiver 1385 and antenna 1390 of the communication device 1300.

[0166] Sample Clauses

[0167] Specific implementation examples are described in the following numbered clauses:

[0168] Clause 1: A method for wireless communications by a UE, the method comprising: while connected to a serving cell of a first RAT, receiving a serving cell measurement configuration; sending a serving cell measurement report when a first condition involving a first measurement of the serving cell is satisfied; receiving a neighbor cell measurement configuration; and deciding whether to send a neighbor cell measurement report based on at least one second condition involving a second measurement of the serving cell.

[0169] Clause 2: A method as described in clause 1, wherein the neighbor cell measurement configuration configures the UE for inter-RAT measurements.

[0170] Clause 3: A method as described in any of clauses 1 and 2, wherein the neighbor cell measurement configuration configures the UE for inter-frequency measurements.

[0171] Clause 4: A method according to any one of clauses 1 to 3, wherein: the first condition is deemed to be met when a serving cell measurement is less than a first threshold indicated via the serving cell configuration.

[0172] Clause 5: A method according to clause 4, wherein: when the second serving cell measurement exceeds a second threshold, the second condition is deemed to be met.

[0173] Clause 6: A method according to clause 5, wherein the deciding comprises: deciding to suppress sending the neighbour cell measurement report when the second condition is met.

[0174] Clause 7: The method according to clause 6, further comprising: when the second condition is met, deciding not to perform neighbor cell measurement.

[0175] Clause 8: The method according to Clause 5 further includes: maintaining a count of the number of times the service cell measurement satisfies both the first condition and another condition within a first time period, the other condition being deemed to be satisfied when the service cell measurement is greater than a third threshold indicated via the service cell configuration; and calculating the value of the second threshold based on the count.

[0176] Clause 9: The method according to clause 8, further comprising: resetting the count when the serving cell measurement meets other conditions for a second time period.

[0177] Clause 10: A method according to clause 4, wherein: when the second serving cell measurement exceeds a second threshold of neighboring cell measurement, the second condition is deemed to be satisfied.

[0178] Clause 11: A method according to clause 10, wherein the deciding comprises: deciding to refrain from sending the neighbour cell measurement report when the second condition is met.

[0179] Clause 12: An apparatus comprising: a memory including executable instructions; and a processor configured to execute the executable instructions and cause the apparatus to perform the method according to any one of clauses 1 to 11.

[0180] Clause 13: An apparatus comprising means for performing the method according to any one of clauses 1 to 11.

[0181] Clause 14: A non-transitory computer readable medium comprising executable instructions which, when executed by a processor of an apparatus, cause the apparatus to perform the method of any one of clauses 1 to 11.

[0182] Clause 15: A computer program product embodied on a computer readable storage medium, the computer readable storage medium comprising code for performing the method according to any of clauses 1 to 11.

[0183] Additional considerations

[0184] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. The examples discussed herein are not limited to the scope, applicability or aspects set forth in the claims. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. For example, without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Each example may ignore, replace or add each process or component as appropriate. For example, the described method may be performed in an order different from the described order, and various actions may be added, omitted or combined. In addition, the features described for some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functions, or structures and functions that are supplemented or substituted for the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0185] The various illustrative logic blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed using a general purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC), or any other such configuration.

[0186] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items (including single members). 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 with 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).

[0187] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Moreover, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. In addition, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0188] The method disclosed herein includes one or more actions for implementing the method. The method actions can be interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of actions is specified, the order and / or use of specific actions can be modified without departing from the scope of the claims. In addition, the various operations of the method described above can be performed by any appropriate component that can perform the corresponding function. The component may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors.

[0189] The following claims are not intended to be limited to the various aspects shown herein, but should be granted the full scope consistent with the language of the claims. Within the claims, unless otherwise specified, references to elements in the singular form are not intended to mean "one and only one", but "one or more". Unless otherwise specified, the term "some" refers to one or more. Any claim element is not interpreted according to the provisions of 35 U.S.C. § 112 (f) unless the element is explicitly stated using the phrase "member for...". All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will be known later to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims.

Claims

1. A method for wireless communication by a user equipment (UE), the method comprising: receiving a serving cell measurement configuration while connected to a serving cell of a first radio access technology (RAT); When a first condition involving a first measurement of the serving cell is met, sending a serving cell measurement report; Receiving neighboring cell measurement configuration; as well as Whether to send a neighbor cell measurement report is determined based on at least one second condition related to a second measurement of the serving cell. 2 . The method of claim 1 , wherein the neighbor cell measurement configuration configures the UE for inter-RAT measurement. 3 . The method of claim 1 , wherein the neighbor cell measurement configuration configures the UE for inter-frequency measurement.

4. The method according to claim 1, wherein: When the serving cell measurement is less than a first threshold indicated via the serving cell configuration, the first condition is considered to be met.

5. The method according to claim 4, wherein: When the second serving cell measurement exceeds a second threshold, it is considered that the second condition is met.

6. The method of claim 5, wherein the determining comprises: When the second condition is met, it is decided to suppress sending the neighboring cell measurement report.

7. The method according to claim 6, further comprising: When the second condition is met, it is decided not to perform neighbor cell measurement.

8. The method according to claim 5, further comprising: maintaining a count of the number of times a serving cell measurement satisfies both the first condition and another condition over a first time period, the other condition being deemed satisfied when the serving cell measurement is greater than a third threshold indicated via the serving cell configuration; and The value of the second threshold is calculated based on the count.

9. The method according to claim 8, further comprising: When the serving cell measurement meets other conditions for a second time period, the count is reset.

10. The method according to claim 4, wherein: When the second serving cell measurement exceeds a second neighboring cell measurement threshold, it is considered that the second condition is met.

11. The method of claim 10, wherein the determining comprises: When the second condition is met, it is decided to suppress sending the neighboring cell measurement report.

12. A device, comprising: a memory including executable instructions; and a processor configured to execute the executable instructions and cause the apparatus to perform the method according to any one of claims 1 to 11.

13. An apparatus comprising means for performing the method according to any one of claims 1 to 11.

14. A non-transitory computer-readable medium comprising executable instructions which, when executed by a processor of a device, cause the device to perform the method according to any one of claims 1 to 11.

15. A computer program product embodied on a computer-readable storage medium, the computer-readable storage medium comprising code for executing the method according to any one of claims 1 to 11.

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