Technique for indicating frequency band during blind handover

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell. The UE may measure a synchronization signal from the target cell based at least in part on the configuration message. Numerous other aspects are provided.

Description

[0001] Public domain

[0002] Aspects of the present disclosure relate generally to wireless communications and to techniques and devices for indicating a frequency band during a blind handoff.

[0003] Related technical description

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include several base stations (BSs) that can support communication of several user equipments (UEs). User equipments (UEs) may communicate with base stations (BSs) via downlinks and uplinks. Downlinks (or forward links) refer to the communication link from a BS to a UE, while uplinks (or reverse links) refer to the communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, and the like.

[0006] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at city, country, region, and even global levels. New Radio (NR) (which may also be referred to as 5G) is an enhancement set to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also referred to as discrete Fourier transform spread OFDM (DFT-s-OFDM) on the uplink (UL), and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. Further improvements to LTE, NR and other radio access technologies are still useful as the demand for mobile broadband access continues to grow.

[0007] Overview

[0008] In some aspects, a method of performing wireless communications by a user equipment (UE) includes receiving a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell; and measuring a synchronization signal from the target cell based at least in part on the configuration message.

[0009] In some aspects, the configuration message further indicates an absolute radio frequency channel number (ARFCN) for the target cell.

[0010] In some aspects, the configuration message comprises a radio resource control (RRC) reconfiguration message.

[0011] In some aspects, the synchronization signal comprises a synchronization signal block (SSB).

[0012] In some aspects, the configuration message further indicates at least one of a subcarrier spacing (SCS) or a measurement timing configuration for the synchronization signal.

[0013] In some aspects, the configuration message is received from a master node.

[0014] In some aspects, the target cell is within a New Radio (NR) network and the master node is within a legacy network.

[0015] In some aspects, the configuration message is received from a secondary node.

[0016] In some aspects, the secondary node is within a New Radio (NR) network and the target cell is a secondary cell.

[0017] In some aspects, the configuration message is received from a cell within a standalone (SA) new radio (NR) network.

[0018] In some aspects, the target cell is within a different NR network.

[0019] In some aspects, the target cell is a secondary cell.

[0020] In some aspects, measuring the synchronization signal includes applying a receive filter based at least in part on the frequency band to measure the synchronization signal.

[0021] In some aspects, a method of performing wireless communications by a base station includes: determining that a frequency band used for a target cell overlaps with at least one other frequency band; and transmitting a configuration message associated with a blind handover to a UE and based at least in part on the determination, wherein the configuration message indicates the frequency band used for the target cell.

[0022] In some aspects, the configuration message further indicates an ARFCN for the target cell.

[0023] In some aspects, the configuration message comprises an RRC reconfiguration message.

[0024] In some aspects, the configuration message triggers the UE to measure a synchronization signal.

[0025] In some aspects, the synchronization signal comprises SSB.

[0026] In some aspects, the configuration message further indicates at least one of an SCS or a measurement timing configuration for the synchronization signal.

[0027] In some aspects, the base station is a master node.

[0028] In some aspects, the target cell is within a NR network and the master node is within a legacy network.

[0029] In some aspects, the base station is a secondary node.

[0030] In some aspects, the secondary node is within the NR network and the target cell is a secondary cell.

[0031] In some aspects, the base station is included in a cellular cell within the SA NR network.

[0032] In some aspects, the target cell is within a different NR network.

[0033] In some aspects, the target cell is a secondary cell.

[0034] In some aspects, a UE for wireless communication includes a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: receive a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell; and measure a synchronization signal from the target cell based at least in part on the configuration message.

[0035] In some aspects, the configuration message further indicates an ARFCN for the target cell.

[0036] In some aspects, the configuration message comprises an RRC reconfiguration message.

[0037] In some aspects, the synchronization signal comprises SSB.

[0038] In some aspects, the configuration message further indicates at least one of an SCS or a measurement timing configuration for the synchronization signal.

[0039] In some aspects, the configuration message is received from a master node.

[0040] In some aspects, the target cell is within a NR network and the master node is within a legacy network.

[0041] In some aspects, the configuration message is received from a secondary node.

[0042] In some aspects, the secondary node is within the NR network and the target cell is a secondary cell.

[0043] In some aspects, the configuration message is received from a cell within the SA NR network.

[0044] In some aspects, the target cell is within a different NR network.

[0045] In some aspects, the target cell is a secondary cell.

[0046] In some aspects, the one or more processors, when measuring the synchronization signal, are configured to apply a receive filter based at least in part on the frequency band to measure the synchronization signal.

[0047] In some aspects, a base station for wireless communication includes a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: determine that a frequency band for a target cell overlaps with at least one other frequency band; and transmit a configuration message associated with a blind handover to a UE and based at least in part on the determination, wherein the configuration message indicates the frequency band for the target cell.

[0048] In some aspects, the configuration message further indicates an ARFCN for the target cell.

[0049] In some aspects, the configuration message comprises an RRC reconfiguration message.

[0050] In some aspects, the configuration message triggers the UE to measure a synchronization signal.

[0051] In some aspects, the synchronization signal comprises SSB.

[0052] In some aspects, the configuration message further indicates at least one of an SCS or a measurement timing configuration for the synchronization signal.

[0053] In some aspects, the base station is a master node.

[0054] In some aspects, the target cell is within a NR network and the master node is within a legacy network.

[0055] In some aspects, the base station is a secondary node.

[0056] In some aspects, the secondary node is within the NR network and the target cell is a secondary cell.

[0057] In some aspects, the base station is included in a cellular cell within the SA NR network.

[0058] In some aspects, the target cell is within a different NR network.

[0059] In some aspects, the target cell is a secondary cell.

[0060] In some aspects, a non-transitory computer-readable medium stores an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a UE, causes the UE to: receive a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell; and measure a synchronization signal from the target cell based at least in part on the configuration message.

[0061] In some aspects, the configuration message further indicates an ARFCN for the target cell.

[0062] In some aspects, the configuration message comprises an RRC reconfiguration message.

[0063] In some aspects, the synchronization signal comprises SSB.

[0064] In some aspects, the configuration message further indicates at least one of an SCS or a measurement timing configuration for the synchronization signal.

[0065] In some aspects, the configuration message is received from a master node.

[0066] In some aspects, the target cell is within a NR network and the master node is within a legacy network.

[0067] In some aspects, the configuration message is received from a secondary node.

[0068] In some aspects, the secondary node is within the NR network and the target cell is a secondary cell.

[0069] In some aspects, the configuration message is received from a cell within the SA NR network.

[0070] In some aspects, the target cell is within a different NR network.

[0071] In some aspects, the target cell is a secondary cell.

[0072] In some aspects, the one or more instructions to cause the UE to measure the synchronization signal cause the UE to apply a receive filter based at least in part on the frequency band to measure the synchronization signal.

[0073] In some aspects, a non-transitory computer-readable medium stores an instruction set for wireless communication, the instruction set including one or more instructions that, when executed by one or more processors of a base station, causes the base station to: determine that a frequency band for a target cell overlaps with at least one other frequency band; and transmit a configuration message associated with a blind handover to a UE and based at least in part on the determination, wherein the configuration message indicates the frequency band for the target cell.

[0074] In some aspects, the configuration message further indicates an ARFCN for the target cell.

[0075] In some aspects, the configuration message comprises an RRC reconfiguration message.

[0076] In some aspects, the configuration message triggers the UE to measure a synchronization signal.

[0077] In some aspects, the synchronization signal comprises SSB.

[0078] In some aspects, the configuration message further indicates at least one of an SCS or a measurement timing configuration for the synchronization signal.

[0079] In some aspects, the base station is a master node.

[0080] In some aspects, the target cell is within a NR network and the master node is within a legacy network.

[0081] In some aspects, the base station is a secondary node.

[0082] In some aspects, the secondary node is within the NR network and the target cell is a secondary cell.

[0083] In some aspects, the base station is included in a cellular cell within the SA NR network.

[0084] In some aspects, the target cell is within a different NR network.

[0085] In some aspects, the target cell is a secondary cell.

[0086] In some aspects, an apparatus for wireless communication includes: means for receiving a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell; and means for measuring a synchronization signal from the target cell based at least in part on the configuration message.

[0087] In some aspects, the configuration message further indicates an ARFCN for the target cell.

[0088] In some aspects, the configuration message comprises an RRC reconfiguration message.

[0089] In some aspects, the synchronization signal comprises SSB.

[0090] In some aspects, the configuration message further indicates at least one of an SCS or a measurement timing configuration for the synchronization signal.

[0091] In some aspects, the configuration message is received from a master node.

[0092] In some aspects, the target cell is within a NR network and the master node is within a legacy network.

[0093] In some aspects, the configuration message is received from a secondary node.

[0094] In some aspects, the secondary node is within the NR network and the target cell is a secondary cell.

[0095] In some aspects, the configuration message is received from a cell within the SA NR network.

[0096] In some aspects, the target cell is within a different NR network.

[0097] In some aspects, the target cell is a secondary cell.

[0098] In some aspects, means for measuring the synchronization signal includes means for applying a receive filter based at least in part on the frequency band to measure the synchronization signal.

[0099] In some aspects, an apparatus for wireless communication includes: means for determining that a frequency band used for a target cell overlaps with at least one other frequency band; and means for transmitting a configuration message associated with a blind handover to a UE and based at least in part on the determination, wherein the configuration message indicates the frequency band used for the target cell.

[0100] In some aspects, the configuration message further indicates an ARFCN for the target cell.

[0101] In some aspects, the configuration message comprises an RRC reconfiguration message.

[0102] In some aspects, the configuration message triggers the UE to measure a synchronization signal.

[0103] In some aspects, the synchronization signal comprises SSB.

[0104] In some aspects, the configuration message further indicates at least one of an SCS or a measurement timing configuration for the synchronization signal.

[0105] In some aspects, the device is a master node.

[0106] In some aspects, the target cell is within a NR network and the master node is within a legacy network.

[0107] In some aspects, the device is a secondary node.

[0108] In some aspects, the secondary node is within the NR network and the target cell is a secondary cell.

[0109] In some aspects, the device is included in a cellular cell within a SA NR network.

[0110] In some aspects, the target cell is within a different NR network.

[0111] In some aspects, the target cell is a secondary cell.

[0112] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as substantially described herein with reference to and as illustrated in the accompanying figures and specification.

[0113] The foregoing has broadly outlined the features and technical advantages of examples according to the present disclosure in an effort to make the following detailed description better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be easily used as a basis for modifying or designing other structures for implementing the same purpose as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the accompanying drawings is provided for the purpose of illustration and description and is not intended to define limitations on the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0115] In order to understand the above-stated features of the present disclosure in detail, the above briefly summarized content may be described in more detail with reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and should not be considered to limit its scope, as the description may allow for other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0116] Figure 1 is a diagram illustrating an example of a wireless network in accordance with various aspects of the present disclosure.

[0117] Figure 2 is a diagram illustrating an example of a base station and a UE in communication in a wireless network according to various aspects of the present disclosure.

[0118] Figure 3 is a diagram illustrating an example of blind switching according to various aspects of the present disclosure.

[0119] Figure 4 is a diagram illustrating an example associated with indicating a frequency band during a blind handover according to various aspects of the present disclosure.

[0120] Figure 5 and 6 is a diagram illustrating example procedures associated with indicating a frequency band during a blind handover in accordance with various aspects of the present disclosure.

[0121] Figure 7 and Figure 8 is a block diagram of an example device for wireless communications in accordance with various aspects of the present disclosure.

[0122] Detailed Description

[0123] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and it will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can 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 supplements or other other structures, functionality, or structures and functionality as the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be implemented by one or more elements of the claims.

[0124] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0125] It should be noted that while various aspects may be described herein using terminology generally associated with 5G or NR radio access technologies (RATs), various aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or RATs after 5G (e.g., 6G).

[0126] Figure 1 1 is a diagram illustrating an example of a wireless network 100 according to various aspects of the present disclosure. The wireless network 100 may be a 5G (NR) network, an LTE network, etc. or may include elements thereof. The wireless network 100 may include several base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NRBS, a B node, a gNB, a 5G B node (NB), an access point, a transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0127] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in , BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. The BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "B node", "5G NB", and "cell" may be used interchangeably herein.

[0128] In some aspects, the cell may not necessarily be stationary, and the geographic area of ​​the cell may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (such as direct physical connections, virtual networks, etc.) using any suitable transport network.

[0129] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or a UE) and send transmissions of the data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in FIG. 1 , relay BS 110 d may communicate with macro BS 110 a and UE 120 d to facilitate communication between BS 110 a and UE 120 d. A relay BS may also be referred to as a relay station, relay base station, relay, or the like.

[0130] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0131] A network controller 130 may be coupled to a set of BSs and may provide coordination and control of these BSs. The network controller 130 may communicate with each BS via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0132] UE 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0133] Some UEs may be considered as machine type communication (MTC) devices, or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to or to a network (e.g., a wide area network, such as the Internet or a cellular network) via, for example, a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as client equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, and the like. In some aspects, a processor component and a memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operationally coupled, communicatively coupled, electronically coupled, electrically coupled, and the like.

[0134] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific RAT and may operate on one or more frequencies. RAT may also be referred to as radio technology, air interface, etc. Frequency may also be referred to as carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0135] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more sidelink channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0136] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, frequency bands, channels, etc. based on frequency or wavelength. For example, the devices of the wireless network 100 may communicate using an operating band having a first frequency range (FR1) and / or may communicate using an operating band having a second frequency range (FR2), the first frequency range (FR1) may span 410 MHz to 7.125 GHz, and the second frequency range (FR2) may span 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a "sub-6 GHz band". Similarly, FR2 is often referred to as a "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU). Thus, unless otherwise specifically stated, it should be understood that the term sub-"6 GHz" and the like, if used herein, may broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise specifically stated, it should be understood that the term "millimeter wave" and the like, if used herein, may broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

[0137] As indicated above, Figure 1 are provided as examples. Other examples may differ from those described in Figure 1 Examples described.

[0138] Figure 2 is a diagram illustrating an example 200 of a base station 110 and a UE 120 in communication in a wireless network 100 in accordance with various aspects of the present disclosure. The base station 110 may be equipped with T antennas 234a through 234t, and the UE 120 may be equipped with R antennas 252a through 252r, where in general T≥1 and R≥1.

[0139] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for the UE based at least in part on the MCS selected for each UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)), demodulation reference signals (DMRS), etc.) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0140] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols where applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in housing 284.

[0141] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0142] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, where applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antenna(s) 252, modulators and / or demodulators 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform aspects of any of the methods described herein.

[0143] At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 where applicable, and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 to schedule the UE 120 for downlink and / or uplink communications. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of antenna(s) 234, modulator and / or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (eg, controller / processor 240) and memory 242 to perform aspects of any of the methods described herein.

[0144] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) of the base station 110 may perform one or more techniques associated with indicating a frequency band during a blind handover, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 5 The process of 500 Figure 6 600, and / or operations of other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include: a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed (e.g., directly, or after compilation, conversion, interpretation, etc.) by one or more processors of base station 110 and / or UE 120, may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example Figure 5 The process of 500 Figure 6 The process 600 of , and / or operations of other processes as described herein. In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, interpreting instructions, etc.

[0145] In some aspects, a UE (e.g., UE 120 and / or Figure 7The apparatus 700 of the present invention may include: a device for receiving a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell; and / or a device for measuring a synchronization signal from the target cell based at least in part on the configuration message. The means for the UE to perform the operations described herein may include, for example, an antenna 252, a demodulator 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, a TX MIMO processor 266, a modulator 254, a controller / processor 280, and / or a memory 282.

[0146] In some aspects, a base station (e.g., base station 110 and / or Figure 8 The apparatus 800 may include: a device for determining that a frequency band for a target cell overlaps with at least one other frequency band; and / or a device for providing a UE (e.g., UE 120 and / or Figure 7 The apparatus 700 of claim 1 and transmitting a configuration message associated with a blind handover based at least in part on the determination, wherein the configuration message indicates a frequency band for the target cell. Means for the base station to perform operations described herein may include, for example, a transmit processor 220, a TX MIMO processor 230, a modulator 232, an antenna 234, a demodulator 232, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, and / or a scheduler 246.

[0147] As indicated above, Figure 2 are provided as examples. Other examples may differ from those described in Figure 2 Examples described.

[0148] Figure 3300 is a diagram illustrating an example of blind handover according to various aspects of the present disclosure. In example 300, a source base station 110a may initiate a handover of a UE 120 to a target base station 110b. In some aspects, the source base station 110a and the target base station 110b may be associated with the same wireless network. For example, the source base station 110a may initiate a handover of the UE 120 based at least in part on the mobility of the UE 120 away from the source base station 110a and toward the target base station 110b. Alternatively, the source base station 110a and the target base station 110b may be associated with different wireless networks. For example, the source base station 110a may be associated with a legacy network (e.g., an LTE network), and the target base station 110b may be associated with an NR network (e.g., in a non-standalone (NSA) operation mode) to be added as a secondary cell group (SCG) with a legacy network. In another example, the source base station 110a may be associated with a legacy network (e.g., an LTE network), and the target base station 110b may be associated with an NR network (e.g., in a standalone (SA) operation mode) to which the UE 120 is to connect. As shown in conjunction with reference numeral 310, the source base station 110a may transmit, and the UE 120 may receive, a configuration message associated with the blind handover. For example, the configuration message may include a radio resource control (RRC) message, such as an RRC reconfiguration message (e.g., as defined in a 3GPP specification and / or another standard).

[0149] In some aspects, the configuration message may be associated with a blind handover because the source base station 110a does not request the UE 120 to perform measurements (e.g., RSRP, CQI, and / or other measurements of signal strength) of one or more reference signals (e.g., synchronization signal blocks (SSBs), tracking reference signals (TRSs), and / or other reference signals) from the target base station 110b prior to transmitting the configuration message. Accordingly, as shown in conjunction with reference numeral 320, the UE 120 may perform measurements after receiving the configuration message. For example, the UE 120 may measure one or more reference signals (e.g., SSBs, TRSs, and / or other reference signals) from the target base station 110b in order to initiate an RRC connection with the target base station 110b.

[0150] Generally speaking, the configuration message associated with the blind handover includes an indicator of the absolute radio frequency channel number (ARFCN). For example, the RRC reconfiguration message may include an ARFCN-ValueNR data element (e.g., as defined in the 3GPP specification). However, the indicator of the frequency band (e.g., the frequency band indicator NR (freqBandIndicatorNR) data element and / or other similar data elements) is generally included in the measurement request (e.g., as defined in the 3GPP specification. Measurement object NR (MeasObjectNR) data structure and / or other similar data structures). Accordingly, the UE will not receive the indicator of the frequency band during the blind handover because the source base station will not transmit the measurement request before initiating the handover.

[0151] The lack of frequency bands may cause the UE to search through more receive filters to find the optimal receive filter when measuring one or more reference signals from the target base station. For example, when the ARFCN overlaps with multiple frequency bands, the UE may have to search through additional filters. Table 1 below shows some examples of these overlaps:

[0152]

[0153]

[0154] Table 1

[0155] Accordingly, the UE may consume additional resources (eg, battery power, processing resources, and network resources) when searching through the additional filters. Additionally, the UE and the target base station will experience latency when establishing an RRC connection, thereby delaying the completion of the blind handover.

[0156] Some techniques and devices described herein enable a source base station (e.g., base station 110a) to provide an indicator of a frequency band and a configuration message associated with a blind handover. As a result, the UE (e.g., UE 120) can save resources (e.g., battery power, processing resources, and network resources) by searching through fewer filters compared to a situation where an indicator of a frequency band has not been provided to UE 120. Additionally, the UE 120 and the target base station for handover (e.g., base station 110b) will establish an RRC connection more quickly, which accelerates the completion of the blind handover.

[0157] As indicated above, Figure 3 are provided as examples. Other examples may differ from those described herein. Figure 3 Examples described.

[0158] Figure 44 is a diagram illustrating an example 400 associated with a frequency band during an indication blind handover according to various aspects of the present disclosure. In example 400, a source base station (e.g., base station 110a) may initiate a handover of UE 120 to a target base station (e.g., base station 110b). In some aspects, source base station 110a and target base station 110b may be associated with the same wireless network. For example, base station 110a may initiate a handover of UE 120 based at least in part on the mobility of UE 120 away from base station 110a and toward base station 110b. Alternatively, base station 110a and base station 110b may be associated with different wireless networks. For example, base station 110a may be associated with a legacy network (e.g., an LTE network), and base station 110b may be associated with an NR network. In another example, base station 110a may be associated with one NR network, and base station 110b may be associated with another NR network.

[0159] As shown in conjunction with reference numeral 405, the base station 110a may transmit, and the UE 120 may receive, a configuration message associated with the blind handover. For example, the configuration message may include an RRC reconfiguration message from the base station 110a to the UE 120. In some aspects, the configuration message may indicate a frequency band for a target cell (e.g., a cell including the base station 110b). For example, the configuration message may include a frequency band indicator NR data element (e.g., as defined in a 3GPP specification and / or other standard) and / or another similar data element.

[0160] In some aspects, UE 120 may receive a configuration message from a master node (MN). Accordingly, base station 110a may include a MN on a legacy network (e.g., an LTE network) that provides a configuration message for a target cell in the NR network. In one example, base station 110a may perform a handover from a legacy network to an NR network. In another example, base station 110a may perform a secondary cell addition (e.g., adding base station 110b as a primary secondary cell (PSCell)). Accordingly, UE 120 may enter a dual connectivity mode (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) NR-Dual Connectivity (EN-DC) mode) with base station 110a and base station 110b. In another example, base station 110a may perform a secondary node (SN) change (e.g., switching from a different base station in the NR network to base station 110b as an SN).

[0161] In some aspects, UE 120 may receive a configuration message from a cell within a standalone (SA) NR network. Accordingly, base station 110a may be included in the cell of the SA NR network. In one example, base station 110a may perform a handover from a cell including base station 110a to a different cell in the same SA NR network including base station 110b. In another example, base station 110a may perform a handover from an SA NR network including base station 110a to a different SA NR network including base station 110b. In another example, base station 110a may perform a secondary cell addition (e.g., adding base station 110b as a PSCell). Accordingly, UE 120 may enter a dual connectivity mode (e.g., NR-dual connectivity (NR-DC) mode) with base station 110a and base station 110b.

[0162] In some aspects, the UE 120 may receive a configuration message from the SN. Accordingly, the base station 110a may include an SN on the NR network that provides a configuration message for a target cell in the same or different NR network. In one example, the base station 110a may perform a secondary cell change (e.g., a switch from a different base station to the base station 110b as a PSCell). Accordingly, the UE 120 may enter a dual connectivity mode (e.g., NR-DC mode or EN-DC mode) with the MN and the base station 110b. In another example, the base station 110a may perform a secondary cell addition (e.g., adding the base station 110b as a new secondary cell (SCell)). Accordingly, the UE 120 may enter a dual connectivity mode (e.g., NR-DC mode or EN-DC mode) with the MN and the base station 110b. In another example, the base station 110a may perform an SN change (e.g., switching from the base station 110a to the base station 110b as the SN). Accordingly, UE 120 may enter a dual connectivity mode (eg, NR-DC mode or EN-DC mode) with the MN and base station 110b.

[0163] In some aspects, the base station 110a may determine that the frequency band for the target cell overlaps with at least one other frequency band. For example, the base station 110a may determine the frequency band for the target cell based at least in part on backhaul communications, stored information associated with the target cell, and / or previous measurements from the target cell (e.g., received from other UEs and / or measured directly from the target cell). Accordingly, the base station 110a may transmit a configuration message indicating the frequency band for the target cell based at least in part on the determination.

[0164] In some aspects, the base station 110a may omit the indicator of the frequency band from the configuration message when the base station 110a may determine that the frequency band for the target cell does not overlap with at least one other frequency band. Accordingly, the base station 110a may dynamically determine whether to include a frequency band indicator NR data element (e.g., as defined in 3GPP specifications and / or other standards) and / or another similar data element in the configuration message.

[0165] In some aspects, the configuration message may further indicate the ARFCN for the target cell.For example, the configuration message may include an ARFCN-value data element (eg, as defined in 3GPP specifications and / or other standards) and / or another similar data element.

[0166] Additionally or alternatively, the configuration message may further indicate at least one of a subcarrier spacing (SCS) for a synchronization signal from the target cell (e.g., from the base station 110b) or a measurement timing configuration. For example, the configuration message may include an ssbSubcarrier Spacing data element (e.g., as defined in a 3GPP specification and / or other standard), an smtc1 data element (e.g., as defined in a 3GPP specification and / or other standard), an smtc2 data element, and / or other similar data elements.

[0167] As shown in conjunction with reference numeral 410, UE 120 may measure a synchronization signal from the target cell based at least in part on the configuration message. For example, UE 120 may measure an SSB and / or another synchronization signal. In some aspects, as described above, UE 120 may further measure the synchronization signal using an SCS and / or a measurement timing configuration indicated by the configuration message.

[0168] In some aspects, UE 120 may apply a receive filter based at least in part on the frequency band to measure the synchronization signal. For example, UE 120 may adjust one or more antennas, modulators, and / or other hardware components to apply the receive filter.

[0169] As shown in conjunction with reference numeral 415, the UE 120 may establish an RRC connection with the base station 110b. For example, the UE 120 may measure the synchronization signal and decode it in order to establish the RRC connection.

[0170] By using the combination Figure 4With the described techniques, base station 110a can provide an indicator of the frequency band during the blind handover. As a result, UE 120 can save resources (e.g., battery power, processing resources, and network resources) by searching through fewer filters compared to the case where the indicator of the frequency band has not been provided to UE 120. Additionally, UE 120 and base station 110b will establish an RRC connection more quickly, thereby accelerating the completion of the blind handover.

[0171] As indicated above, Figure 4 are provided as examples. Other examples may differ from those described herein. Figure 4 Examples described.

[0172] Figure 5 1 is a diagram illustrating an example process 500 performed, for example, by a UE according to various aspects of the present disclosure. Example process 500 is a diagram in which a UE (e.g., UE 120 and / or Figure 7 An example of a device 700) performing operations associated with a technique for indicating a frequency band during a blind handover.

[0173] like Figure 5 As shown, in some aspects, process 500 may include receiving a configuration message associated with a blind handover (block 510). For example, a UE (e.g., using Figure 7 In some aspects, the receiving component 702 depicted in the embodiment may receive a configuration message associated with a blind handover, as described above. In some aspects, the configuration message indicates a frequency band for a target cell.

[0174] like Figure 5 As further shown in FIG. 5 , in some aspects, process 500 may include measuring a synchronization signal from the target cell based at least in part on the configuration message (block 520). Figure 7 The measuring component 708 depicted in may measure a synchronization signal from the target cellular cell based at least in part on the configuration message, as described above.

[0175] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0176] In a first aspect, the configuration message further indicates an ARFCN for the target cell.

[0177] In a second aspect, alone or in combination with the first aspect, the configuration message comprises an RRC reconfiguration message.

[0178] In a third aspect, either alone or in combination with one or more of the first and second aspects, the synchronization signal comprises SSB.

[0179] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the configuration message further indicates at least one of an SCS or a measurement timing configuration for the synchronization signal.

[0180] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the configuration message is received from the MN.

[0181] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the target cell is within a NR network and the MN is within a legacy network.

[0182] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the configuration message is received from the SN.

[0183] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the SN is within a NR network and the target cell is a SCell.

[0184] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the configuration message is received from a cellular cell within the SA NR network.

[0185] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the target cell is within a different NR network.

[0186] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the target cell is a SCell.

[0187] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, measuring the synchronization signal includes applying a receive filter based at least in part on the frequency band to measure the synchronization signal.

[0188] although Figure 5 An example block diagram of process 500 is shown, but in some aspects, process 500 may include Figure 5 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 500. Additionally or alternatively, two or more blocks of the process 500 may be executed in parallel.

[0189] Figure 6 6 is a diagram illustrating an example process 600 performed, for example, by a base station in accordance with various aspects of the present disclosure. Example process 600 is a diagram in which a base station (e.g., base station 110 and / or Figure 8 An example of a device 800) performing operations associated with a technique for indicating a frequency band during a blind handover.

[0190] like Figure 6 As shown, in some aspects, process 600 may include determining that a frequency band for a target cell overlaps with at least one other frequency band (block 610). Figure 8 The determining component 808 depicted in can determine that the frequency band for the target cellular cell overlaps with at least one other frequency band, as described above.

[0191] like Figure 6 As further shown in FIG. 6 , in some aspects, process 600 may include sending a message to a UE (e.g., UE 120 and / or Figure 7 The apparatus 700 of FIG. 100 and transmits a configuration message associated with a blind handover based at least in part on the determination (block 620). For example, a base station (e.g., using Figure 8 The transmission component 804 depicted in the embodiment may transmit a configuration message associated with the blind handover to the UE and based at least in part on the determination, as described above. In some aspects, the configuration message indicates a frequency band for the target cell.

[0192] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0193] In a first aspect, the configuration message further indicates an ARFCN for the target cell.

[0194] In a second aspect, alone or in combination with the first aspect, the configuration message comprises an RRC reconfiguration message.

[0195] In a third aspect, alone or in combination with one or more of the first and second aspects, the configuration message triggers the UE to measure a synchronization signal.

[0196] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the synchronization signal comprises SSB.

[0197] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the configuration message further indicates at least one of an SCS or a measurement timing configuration for the synchronization signal.

[0198] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the base station is a MN.

[0199] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the target cell is within a NR network and the MN is within a legacy network.

[0200] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the base station is a SN.

[0201] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the SN is within a NR network and the target cell is a SCell.

[0202] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the base station is included in a cellular cell within a SA NR network.

[0203] In an eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, the target cell is within a different NR network.

[0204] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the target cell is a SCell.

[0205] although Figure 6 Example blocks of process 600 are shown, but in some aspects, process 600 may include Figure 6 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in process 600. Additionally or alternatively, two or more blocks of process 600 may be executed in parallel.

[0206] Figure 7 700 is a block diagram of an example device 700 for wireless communication. Device 700 may be a UE, or a UE may include device 700. In some aspects, device 700 includes a receiving component 702 and a transmitting component 704, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, device 700 may use receiving component 702 and transmitting component 704 to communicate with another device 704 (such as a UE, a base station, or another wireless communication device). As further shown, device 700 may include a measuring component 708, etc.

[0207] In some aspects, the device 700 may be configured to perform Figure 4 Additionally or alternatively, the device 700 may be configured to perform one or more of the processes described herein (such as Figure 5 In some aspects, the device 700 and / or Figure 7 One or more components shown in the figure may include the above combination Figure 2 Additionally or alternatively, Figure 7 One or more of the components shown in the above may be combined Figure 2In one or more components described herein, the components may be implemented in a computer program product. Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0208] The receiving component 702 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from the device 706. The receiving component 702 may provide the received communications to one or more other components of the device 700. In some aspects, the receiving component 702 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and may provide the processed signals to one or more other components of the device 706. In some aspects, the receiving component 702 may include a combination of the above. Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0209] The transmission component 704 may transmit communications (such as reference signals, control information, data communications, or a combination thereof) to the device 706. In some aspects, one or more other components of the device 706 may generate communications and may provide the generated communications to the transmission component 704 for transmission to the device 706. In some aspects, the transmission component 704 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and may transmit the processed signals to the device 706. In some aspects, the transmission component 704 may include a combination of the above. Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof of the described UE. In some aspects, the transmitting component 704 can be co-located with the receiving component 702 in a transceiver.

[0210] In some aspects, receiving component 702 may receive (e.g., from device 706) a configuration message associated with a blind handover. The configuration message may indicate a frequency band for a target cell. Accordingly, measuring component 708 may measure a synchronization signal from the target cell based at least in part on the configuration message. In some aspects, measuring component 708 may include the above combined Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmission component 704 can establish an RRC connection with the target cell based at least in part on the measurement component 708 measuring the synchronization signal.

[0211] Figure 7 The number and arrangement of components shown in the figure are provided as examples. In practice, there may be Figure 7 Additional components, fewer components, different components, or differently arranged components than those shown in FIG. Figure 7 Two or more components shown in may be implemented in a single component, or Figure 7 The single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Figure 7 The component collection (e.g., one or more components) shown in FIG. 1 may be described as being executed by Figure 7 Another set of components shown in FIG. 1 performs one or more functions.

[0212] Figure 8 800 is a block diagram of an example device 800 for wireless communication. The device 800 may be a base station, or a base station may include the device 800. In some aspects, the device 800 includes a receiving component 802 and a transmitting component 804, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, the device 800 may use the receiving component 802 and the transmitting component 804 to communicate with another device 806 (such as a UE, a base station, or another wireless communication device). As further shown, the device 800 may include a determining component 808 and other examples.

[0213] In some aspects, the device 800 may be configured to perform Figure 4 Additionally or alternatively, the device 800 may be configured to perform one or more of the processes described herein (such as Figure 6 In some aspects, the device 800 and / or Figure 8 One or more components shown in the figure may include the above combination Figure 2 Additionally or alternatively, Figure 8 One or more of the components shown in the above may be combined Figure 2 In one or more components described herein, the components may be implemented in a computer program product. Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0214] The receiving component 802 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from the device 806. The receiving component 802 may provide the received communications to one or more other components of the device 800. In some aspects, the receiving component 802 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and may provide the processed signals to one or more other components of the device 806. In some aspects, the receiving component 802 may include a combination of the above. Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described base stations.

[0215] The transmission component 804 may transmit communications (such as reference signals, control information, data communications, or a combination thereof) to the device 806. In some aspects, one or more other components of the device 806 may generate communications and may provide the generated communications to the transmission component 804 for transmission to the device 806. In some aspects, the transmission component 804 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.) on the generated communications and may transmit the processed signals to the device 806. In some aspects, the transmission component 804 may include a combination of the above. Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof of the described base stations. In some aspects, the transmitting component 804 can be co-located with the receiving component 802 in a transceiver.

[0216] In some aspects, determining component 808 may determine that the frequency band for the target cell overlaps with at least one other frequency band. In some aspects, determining component 808 may include the above combination Figure 2 A receiving processor, a transmitting processor, a controller / processor, a memory, or a combination thereof of the described base station. In some aspects, the receiving component 802 may receive an indication of a frequency band for the target cell from the target cell and / or one or more UEs. Accordingly, the transmitting component 804 may transmit a configuration message associated with the blind handover to the device 806 and based at least in part on the determination. The configuration message may indicate a frequency band for the target cell.

[0217] Figure 8 The number and arrangement of components shown in the figure are provided as examples. In practice, there may be Figure 8 Additional components, fewer components, different components, or differently arranged components than those shown in FIG. Figure 8 Two or more components shown in may be implemented in a single component, or Figure 8The single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Figure 8 The component collection (e.g., one or more components) shown in FIG. 1 may be described as being executed by Figure 8 Another set of components shown in FIG. 1 performs one or more functions.

[0218] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired by practice of the various aspects.

[0219] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware, firmware, and / or hardware and software. As used herein, a processor is implemented with a combination of hardware, firmware, and / or hardware and software. It will be apparent that the system and / or method described herein can be implemented in different forms of hardware, firmware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Thus, the operation and behavior of these systems and / or methods are described herein without reference to specific software codes--it is understood that software and hardware can be designed to implement these systems and / or methods based at least in part on the description herein.

[0220] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0221] Although specific feature combinations are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. Although each dependent claim listed below can be directly subordinate to only one claim, the disclosure of various aspects includes that each dependent claim is combined with each other claim in this group of claims. The phrase quoting "at least one of" a column 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, and any combination with multiple identical elements (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other sorting of a, b and c).

[0222] Elements, actions or instructions used herein should not be interpreted as key or necessary unless explicitly described as such. Moreover, as used herein, the articles "one" and "a" are intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more items quoted in conjunction with the article "the", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, non-related items, combinations of related and non-related items, etc.), and can be used interchangeably with "one or more". In the occasion of intending to have only one project, the phrase "only one" or similar language is used. Moreover, as used herein, the terms "have", "contain", "include", etc. are intended to be open terms. In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a sequence is intended to be inclusive and may be used interchangeably with "and / or" unless explicitly stated otherwise (e.g., when used in conjunction with "either of" or "only one of").

Claims

1. A method for performing wireless communication by a user equipment (UE), comprising: receiving a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell when the frequency band for the target cell overlaps with at least one other frequency band, and the configuration message omits an indicator of the frequency band for the target cell when the frequency band for the target cell does not overlap with at least one other frequency band; as well as A synchronization signal from the target cell is measured based at least in part on the configuration message.

2. The method of claim 1, wherein: The configuration message further indicates an Absolute Radio Frequency Channel Number (ARFCN) for the target cell.

3. The method of claim 1, wherein: The configuration message comprises a Radio Resource Control (RRC) reconfiguration message.

4. The method of claim 1, wherein: The synchronization signal includes a synchronization signal block (SSB).

5. The method of claim 1, wherein: The configuration message further indicates at least one of a subcarrier spacing (SCS) or a measurement timing configuration for the synchronization signal.

6. The method of claim 1, wherein: The configuration message is received from a master node.

7. The method of claim 6, wherein: The target cell is in a New Radio (NR) network and the master node is in a legacy network.

8. The method of claim 1, wherein: The configuration message is received from a secondary node.

9. The method of claim 8, wherein: The secondary node is within a New Radio (NR) network, and the target cell is a secondary cell.

10. The method of claim 1, wherein: The configuration message is received from a cell within a standalone (SA) new radio (NR) network.

11. The method of claim 10, wherein: The target cell is within a different NR network.

12. The method of claim 10, wherein: The target cell is a secondary cell.

13. The method of claim 1, wherein: Measuring the synchronization signal includes applying a receive filter based at least in part on the frequency band to measure the synchronization signal.

14. A method for performing wireless communication by a network node, comprising: determining that a frequency band for the target cell overlaps with at least one other frequency band; as well as A configuration message associated with a blind handover is transmitted to a user equipment (UE) and based at least in part on the determination, wherein the configuration message indicates a frequency band for the target cell.

15. The method of claim 14, wherein: The configuration message further indicates an Absolute Radio Frequency Channel Number (ARFCN) for the target cell.

16. The method of claim 14, wherein: The configuration message comprises a Radio Resource Control (RRC) reconfiguration message.

17. The method of claim 14, wherein: The configuration message triggers the UE to measure a synchronization signal.

18. The method of claim 17, wherein: The synchronization signal includes a synchronization signal block (SSB).

19. The method of claim 17, wherein: The configuration message further indicates at least one of a subcarrier spacing (SCS) or a measurement timing configuration for the synchronization signal.

20. The method of claim 14, wherein: The network node is a master node.

21. The method of claim 20, wherein: The target cell is in a New Radio (NR) network and the master node is in a legacy network.

22. The method of claim 14, wherein: The network node is a secondary node.

23. The method of claim 22, wherein: The secondary node is within a New Radio (NR) network, and the target cell is a secondary cell.

24. The method of claim 14, wherein: The network node is comprised in a cell within a standalone (SA) new radio (NR) network.

25. The method of claim 24, wherein: The target cell is within a different NR network.

26. The method of claim 24, wherein: The target cell is a secondary cell.

27. A user equipment (UE) for wireless communication, comprising: Memory; as well as one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: receiving a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell when the frequency band for the target cell overlaps with at least one other frequency band, and the configuration message omits an indicator of the frequency band for the target cell when the frequency band for the target cell does not overlap with at least one other frequency band; as well as A synchronization signal from the target cell is measured based at least in part on the configuration message.

28. The user equipment of claim 27, wherein: The configuration message further indicates an Absolute Radio Frequency Channel Number (ARFCN) for the target cell.

29. The user equipment of claim 27, wherein: The configuration message comprises a Radio Resource Control (RRC) reconfiguration message.

30. The user equipment of claim 27, wherein: The synchronization signal includes a synchronization signal block (SSB).

31. The user equipment of claim 27, wherein: The configuration message further indicates at least one of a subcarrier spacing (SCS) or a measurement timing configuration for the synchronization signal.

32. The user equipment of claim 27, wherein: The configuration message is received from a master node.

33. The user equipment of claim 32, wherein: The target cell is in a New Radio (NR) network and the master node is in a legacy network.

34. The user equipment of claim 27, wherein: The configuration message is received from a secondary node.

35. The user equipment of claim 34, wherein: The secondary node is within a New Radio (NR) network, and the target cell is a secondary cell.

36. The user equipment of claim 27, wherein: The configuration message is received from a cell within a standalone (SA) new radio (NR) network.

37. The user equipment of claim 36, wherein: The target cell is within a different NR network.

38. The user equipment of claim 36, wherein: The target cell is a secondary cell.

39. The user equipment of claim 27, wherein: The one or more processors, when measuring the synchronization signal, are configured to apply a receive filter based at least in part on the frequency band to measure the synchronization signal.

40. A network node for wireless communication, comprising: Memory; as well as one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: determining that a frequency band for the target cell overlaps with at least one other frequency band; as well as A configuration message associated with a blind handover is transmitted to a user equipment (UE) and based at least in part on the determination, wherein the configuration message indicates a frequency band for the target cell.

41. The network node of claim 40, wherein: The configuration message further indicates an Absolute Radio Frequency Channel Number (ARFCN) for the target cell.

42. The network node of claim 40, wherein: The configuration message comprises a Radio Resource Control (RRC) reconfiguration message.

43. The network node of claim 40, wherein: The configuration message triggers the UE to measure a synchronization signal.

44. The network node of claim 43, wherein: The synchronization signal includes a synchronization signal block (SSB).

45. The network node of claim 43, wherein: The configuration message further indicates at least one of a subcarrier spacing (SCS) or a measurement timing configuration for the synchronization signal.

46. ​​The network node of claim 40, wherein: The network node is a master node.

47. The network node of claim 46, wherein: The target cell is in a New Radio (NR) network and the master node is in a legacy network.

48. The network node of claim 40, wherein: The network node is a secondary node.

49. The network node of claim 48, wherein: The secondary node is within a New Radio (NR) network, and the target cell is a secondary cell.

50. The network node of claim 40, wherein: The network node is comprised in a cell within a standalone (SA) new radio (NR) network.

51. The network node of claim 50, wherein: The target cell is within a different NR network.

52. The network node of claim 50, wherein: The target cell is a secondary cell.

53. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: receiving a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell when the frequency band for the target cell overlaps with at least one other frequency band, and the configuration message omits an indicator of the frequency band for the target cell when the frequency band for the target cell does not overlap with at least one other frequency band; as well as A synchronization signal from the target cell is measured based at least in part on the configuration message.

54. The non-transitory computer readable medium of claim 53, wherein: The configuration message further indicates an Absolute Radio Frequency Channel Number (ARFCN) for the target cell.

55. The non-transitory computer readable medium of claim 53, wherein: The configuration message comprises a Radio Resource Control (RRC) reconfiguration message.

56. The non-transitory computer readable medium of claim 53, wherein: The synchronization signal includes a synchronization signal block (SSB).

57. The non-transitory computer readable medium of claim 53, wherein: The configuration message further indicates at least one of a subcarrier spacing (SCS) or a measurement timing configuration for the synchronization signal.

58. The non-transitory computer readable medium of claim 53, wherein: The configuration message is received from a master node.

59. The non-transitory computer readable medium of claim 58, wherein: The target cell is in a New Radio (NR) network and the master node is in a legacy network.

60. The non-transitory computer readable medium of claim 53, wherein: The configuration message is received from a secondary node.

61. The non-transitory computer readable medium of claim 60, wherein: The secondary node is within a New Radio (NR) network, and the target cell is a secondary cell.

62. The non-transitory computer readable medium of claim 53, wherein: The configuration message is received from a cell within a standalone (SA) new radio (NR) network.

63. The non-transitory computer readable medium of claim 62, wherein: The target cell is within a different NR network.

64. The non-transitory computer readable medium of claim 62, wherein: The target cell is a secondary cell.

65. The non-transitory computer readable medium of claim 53, wherein: The one or more instructions that cause the UE to measure the synchronization signal cause the UE to apply a receive filter based at least in part on the frequency band to measure the synchronization signal.

66. A non-transitory computer readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions which, when executed by one or more processors of a network node, cause the network node to: determining that a frequency band for the target cell overlaps with at least one other frequency band; as well as A configuration message associated with a blind handover is transmitted to a user equipment (UE) and based at least in part on the determination, wherein the configuration message indicates a frequency band for the target cell.

67. The non-transitory computer readable medium of claim 66, wherein: The configuration message further indicates an Absolute Radio Frequency Channel Number (ARFCN) for the target cell.

68. The non-transitory computer readable medium of claim 66, wherein: The configuration message comprises a Radio Resource Control (RRC) reconfiguration message.

69. The non-transitory computer readable medium of claim 66, wherein: The configuration message triggers the UE to measure a synchronization signal.

70. The non-transitory computer readable medium of claim 69, wherein: The synchronization signal includes a synchronization signal block (SSB).

71. The non-transitory computer readable medium of claim 69, wherein: The configuration message further indicates at least one of a subcarrier spacing (SCS) or a measurement timing configuration for the synchronization signal.

72. The non-transitory computer readable medium of claim 66, wherein: The network node is a master node.

73. The non-transitory computer readable medium of claim 72, wherein: The target cell is in a New Radio (NR) network and the master node is in a legacy network.

74. The non-transitory computer readable medium of claim 66, wherein: The network node is a secondary node.

75. The non-transitory computer readable medium of claim 74, wherein: The secondary node is within a New Radio (NR) network, and the target cell is a secondary cell.

76. The non-transitory computer readable medium of claim 66, wherein: The network node is comprised in a cell within a standalone (SA) new radio (NR) network.

77. The non-transitory computer readable medium of claim 76, wherein: The target cell is within a different NR network.

78. The non-transitory computer readable medium of claim 76, wherein: The target cell is a secondary cell.

79. A device for wireless communication, comprising: means for receiving a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for a target cell when the frequency band for the target cell overlaps with at least one other frequency band, and wherein the configuration message omits an indicator of the frequency band for the target cell when the frequency band for the target cell does not overlap with at least one other frequency band; as well as Means for measuring a synchronization signal from the target cell based at least in part on the configuration message.

80. The apparatus of claim 79, wherein: The configuration message further indicates an Absolute Radio Frequency Channel Number (ARFCN) for the target cell.

81. The apparatus of claim 79, wherein: The configuration message comprises a Radio Resource Control (RRC) reconfiguration message.

82. The apparatus of claim 79, wherein: The synchronization signal includes a synchronization signal block (SSB).

83. The apparatus of claim 79, wherein: The configuration message further indicates at least one of a subcarrier spacing (SCS) or a measurement timing configuration for the synchronization signal.

84. The apparatus of claim 79, wherein: The configuration message is received from a master node.

85. The apparatus of claim 84, wherein: The target cell is in a New Radio (NR) network and the master node is in a legacy network.

86. The apparatus of claim 79, wherein: The configuration message is received from a secondary node.

87. The apparatus of claim 86, wherein: The secondary node is within a New Radio (NR) network, and the target cell is a secondary cell.

88. The apparatus of claim 79, wherein: The configuration message is received from a cell within a standalone (SA) new radio (NR) network.

89. The apparatus of claim 88, wherein: The target cell is within a different NR network.

90. The apparatus of claim 88, wherein: The target cell is a secondary cell.

91. The apparatus of claim 79, wherein: Means for measuring the synchronization signal include means for applying a receive filter based at least in part on the frequency band to measure the synchronization signal.

92. A device for wireless communication, comprising: means for determining that a frequency band used for the target cell overlaps with at least one other frequency band; as well as Means for transmitting, to a user equipment (UE) and based at least in part on the determination, a configuration message associated with a blind handover, wherein the configuration message indicates a frequency band for the target cell.

93. The apparatus of claim 92, wherein: The configuration message further indicates an Absolute Radio Frequency Channel Number (ARFCN) for the target cell.

94. The apparatus of claim 92, wherein: The configuration message comprises a Radio Resource Control (RRC) reconfiguration message.

95. The apparatus of claim 92, wherein: The configuration message triggers the UE to measure a synchronization signal.

96. The apparatus of claim 95, wherein: The synchronization signal includes a synchronization signal block (SSB).

97. The apparatus of claim 95, wherein: The configuration message further indicates at least one of a subcarrier spacing (SCS) or a measurement timing configuration for the synchronization signal.

98. The apparatus of claim 92, wherein: The device is a master node.

99. The apparatus of claim 98, wherein: The target cell is in a New Radio (NR) network and the master node is in a legacy network.

100. The apparatus of claim 92, wherein: The device is a secondary node.

101. The apparatus of claim 100, wherein: The secondary node is within a New Radio (NR) network, and the target cell is a secondary cell.

102. The apparatus of claim 92, wherein: The apparatus is included in a cell within a standalone (SA) new radio (NR) network.

103. The apparatus of claim 102, wherein: The target cell is within a different NR network.

104. The apparatus of claim 102, wherein: The target cell is a secondary cell.

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