Switching between multiple component carriers

Abstract

Various aspects of the present disclosure provide apparatuses, methods, processing systems, and computer-readable media for configuring a user equipment (UE) to communicate using multiple activated component carriers (CCs) based on the UE's ability to switch between them. For example, the network can configure the UE with a number of activated CCs that exceeds the number of CCs supported for simultaneous connections, allowing the UE to quickly switch between activated CCs. As a result, the UE can effectively utilize more operating bands than would be permitted by the number of simultaneous connections using inter-band carrier aggregation.

Description

Technical Field

[0001]

[0003] Generally speaking, aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for utilizing multiple operating frequency bands. Background Art

[0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts, and the like. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and the like). Examples of such multiple-access systems include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, 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, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, to name a few.

[0003] In some examples, a wireless multiple access communication system may include multiple base stations (BSs), each BS capable of simultaneously supporting communication for multiple communication devices (or user equipment (UE)). In an LTE or LTE-A network, a group of one or more base stations may specify an eNodeB (eNB). In other examples (e.g., in next generation, new radio (NR) or 5G networks), a wireless multiple access communication system may include multiple distributed units (DUs) (e.g., edge units (EUs), edge nodes (ENs), radio heads (RHs), smart radio heads (SRHs), transmission reception points (TRPs), etc.) communicating with multiple central units (CUs) (e.g., central nodes (CNs), access node controllers (ANCs), etc.), wherein a group of one or more DUs communicating with the CUs may specify an access node (e.g., which may be referred to as a BS, a 5G NB, a next generation Node B (gNB or gNodeB), a transmission reception point (TRP), etc.). A BS or DU may communicate with a set of UEs on downlink channels (eg, for transmissions from the BS or DU to the UEs) and uplink channels (eg, for transmissions from the UEs to the BS or DU).

[0004] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different wireless devices to communicate on a city-wide, national-scale, regional-scale, and even global scale. NR (e.g., New Radio or 5G) is an example of an emerging telecommunications standard. NR is an evolution of the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, fully utilizing new spectrum, and better integrating with other open standards using OFDMA and cyclic prefixes (CP) on the downlink (DL) and uplink (UL). To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0005] However, as demand for mobile broadband access continues to increase, there is a need to further improve NR and LTE technologies. Preferably, these improvements can also be applied to other multi-access technologies and the communication standards that adopt these technologies. Summary of the Invention

[0006] The systems, methods, and devices of the present disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes. The claims set forth below do not limit the scope of the disclosure, and some features will now be briefly discussed. After careful consideration of this discussion, and particularly after reading the section entitled "Detailed Description," one will understand how the features of the present disclosure provide advantages, including optimizing or maximizing the bandwidth or data rate of a user equipment (UE) by configuring the UE to rapidly switch between multiple component carriers (CCs).

[0007] Certain aspects provide a method for wireless communication by a network entity. Generally, the method includes: receiving capability signaling from a UE indicating the UE's ability to switch between multiple component carriers (CCs); configuring the UE with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous communication; and scheduling the UE for communication on the activated CCs based on the indicated capability of the UE to switch between CCs.

[0008] Certain aspects provide a method for wireless communication of a UE. Generally, the method includes: sending capability signaling to a network entity indicating the UE's capability to switch between multiple CCs; receiving signaling configuring the UE with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous communication; and switching between CCs to communicate on the activated CCs based on the indicated capability of the UE to switch between CCs.

[0009] Certain aspects provide means, apparatus, and / or computer-readable media having computer-executable code stored thereon for the techniques described herein for fast switching between multiple CCs.

[0010] To accomplish the foregoing and related ends, one or more aspects include the features described in detail below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain exemplary features of one or more aspects. However, these features are merely illustrative of some of the various ways in which the principles of these various aspects may be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to understand in detail the implementation of the above-described features of the present disclosure, the present application provides a more specific description with reference to some aspects with respect to the above brief summary, some of which are illustrated in the accompanying drawings. However, it should be noted that since the description of the present invention allows for other equally effective aspects, these drawings only depict certain typical aspects of the present disclosure and should not be considered as limiting the scope of protection of the present invention.

[0012] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

[0013] Figure 2 is a block diagram illustrating an example logical architecture of a distributed radio access network (RAN) in accordance with certain aspects of the present disclosure.

[0014] Figure 3 is a block diagram illustrating an example physical architecture of a distributed RAN in accordance with certain aspects of the present disclosure.

[0015] Figure 4 is a block diagram conceptually illustrating designs of example base stations (BSs) and user equipment (UEs) in accordance with certain aspects of the present disclosure.

[0016] Figure 5 Examples of frame formats for New Radio (NR) systems are shown in accordance with certain aspects of the present disclosure.

[0017] Figure 6A and Figure 6B According to certain aspects of the present disclosure, Figure 6A The cell center and Figure 6B FIG. 1 is a diagram of an example scenario of a UE at a cell edge in a cell configured to be simultaneously connected to multiple operating frequency bands.

[0018] Figure 7 Example operations that may be performed by a network entity are shown according to certain aspects of the present disclosure.

[0019] Figure 8 Example operations that may be performed by a UE are illustrated according to certain aspects of the present disclosure.

[0020] Figure 9A and Figure 9B According to certain aspects of the present disclosure, Figure 9A The cell center and Figure 9B FIG. 1 is a diagram of an example scenario for a UE configured to switch between two or more operating frequency bands at a cell edge in FIG.

[0021] Figure 10 A communication device according to aspects of the present disclosure is shown that can include various components configured to perform operations for the techniques disclosed herein.

[0022] Figure 11 A communication device according to aspects of the present disclosure is shown that can include various components configured to perform operations for the techniques disclosed herein.

[0023] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It will be appreciated that elements disclosed in one aspect may be beneficially utilized in other aspects without specific recitation. DETAILED DESCRIPTION

[0024] Various aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for configuring a user equipment (UE) to communicate using multiple activated component carriers (CCs) based on the UE's ability to switch between multiple CCs. For example, if the UE indicates the ability to quickly switch between activated CCs, the network can configure the UE with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous connections. As a result, the UE can effectively utilize more operating bands than would be allowed by the number of simultaneous connections using inter-band carrier aggregation. This can allow for cost-effective performance improvements with a limited number of radio frequency (RF) chains.

[0025] The following description provides some examples, but is not intended to limit the scope, applicability, or examples set forth in the claims. The functions and arrangements of the components discussed may be modified without departing from the scope of the present disclosure. Various examples may omit, substitute, or add various processes or components as needed. For example, the methods described may be performed in a different order than described, with steps added, omitted, or combined. Furthermore, features described with respect to some examples may be combined in other examples. For example, a device or method may be implemented using any number of the aspects set forth herein. Furthermore, the scope of the present disclosure is intended to cover such devices or methods that may be implemented using other structures, functions, or structures and functions in addition to or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more components of the present invention. As used herein, the word "exemplary" means "serving as an example, illustration, or illustration." Any aspect described herein as "exemplary" should not be construed as preferred or advantageous over other aspects.

[0026] The techniques described herein can be used for various wireless communication technologies, such as LTE, CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), CDMA 2000, and the like. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. CDMA 2000 covers IS-2000, IS-95, and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). An OFDMA network can implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, and the like. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS).

[0027] New Radio (NR) is an emerging wireless communication technology being deployed in conjunction with the 5G Technology Forum (5GTF). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are new releases of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization called the 3rd Generation Partnership Project (3GPP). CDMA2000 and UMBS are described in documents from an organization called the 3rd Generation Partnership Project 2 (3GPP2). The techniques described herein may be used for the wireless networks and radio technologies mentioned above, as well as other wireless networks and radio technologies. For clarity, although various aspects are described herein using terminology commonly associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may also be applicable to communication systems based on other generations (e.g., 5G and higher, including NR technology).

[0028] New Radio (NR) access (e.g., 5G technology) can support various wireless communication services, such as enhanced mobile broadband (eMBB) targeting wider bandwidth (e.g., 80 MHz or above), millimeter wave (mmW) targeting high carrier frequencies (e.g., 25 GHz or above), massive machine type communication MTC (mMTC) targeting non-backward compatible MTC technology, and / or mission critical ultra-reliable low latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet corresponding quality of service (QoS) requirements. In addition, these services can coexist in the same subframe.

[0029] Exemplary Wireless Communication Systems

[0030] Figure 1 An example wireless communication network 100 is shown in which aspects of the present disclosure may be implemented. For example, a UE 120 may be configured to perform Figure 8 Operation 800 of the present invention may switch between multiple component carriers (CCs) and communicate with the BS 110, and the BS 110 may perform Figure 7 Operation 700 is to schedule UE 120 to communicate on the activated CC.

[0031] like Figure 1As shown in FIG, a wireless communication network 100 may include multiple base stations (BSs) 110 and other network entities. A BS may be a station that communicates with a user equipment (UE). Each BS 110 may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a Node B (NB) and / or a Node B subsystem serving that coverage area, depending on the context in which the term is used. In NR systems, the term "cell" and next-generation Node B (gNB or gNodeB), NR BS, 5G NB, access point (AP), or transmission reception point (TRP) may be interchangeable. In some examples, a cell need not be stationary; the geographic area of ​​a cell may move depending on the location of a mobile BS. In some examples, base stations may interconnect with each other and / or one or more other base stations or network nodes (not shown) in the wireless communication network 100 using any appropriate transport network via various types of backhaul interfaces (such as direct physical connections, wireless connections, virtual networks, etc.).

[0032] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific radio access technology (RAT) and may operate on one or more frequencies. A RAT may also be referred to as a radio technology, air interface, etc. A frequency may also be referred to as a carrier, subcarrier, frequency channel, tone, subband, 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.

[0033] A BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers), which allows unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area, which allows unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home), which allows restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users in a home, etc.). 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 1In the illustrated example, BSs 110a, 110b, and 110c may be macro BSs for macrocells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for picocell 102x. BSs 110y and 110z may be femto BSs for femtocells 102y and 102z, respectively. A BS may support one or more (e.g., three) cells.

[0034] The wireless communication network 100 may also include a relay station. A relay station is a station that can receive transmissions of data and / or other information from an upstream station (e.g., a BS or a UE) and send transmissions of the data and / or other information 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 illustrated example, a relay station 110r may communicate with a BS 110a and a UE 120r to facilitate communication between the BS 110a and the UE 120r. A relay station may also be referred to as a relay BS, a relay, or the like.

[0035] The wireless communication network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relays, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless communication network 100. For example, a macro BS may have a higher transmit power level (e.g., 20 watts), while a pico BS, a femto BS, and a relay may have a lower transmit power level (e.g., 1 watt).

[0036] Wireless communication network 100 can support synchronous or asynchronous operation. For synchronous operation, BSs can have similar frame timing, and transmissions from different BSs are approximately aligned in time. For asynchronous operation, BSs can have different frame timing, and transmissions from different BSs are not aligned in time. The techniques described herein can be used for both synchronous and asynchronous operation.

[0037] The network controller 130 may be coupled to a group of BSs and provide coordination and control for these BSs. The network controller 130 may communicate with the BSs 110 via a backhaul. The BSs 110 may also communicate with each other (e.g., directly or indirectly) via a wireless backhaul or a wired backhaul.

[0038] UEs 120 (e.g., UE 120x, UE 120y, etc.) may be dispersed throughout the wireless communication network 100, and each UE may be stationary or mobile. A UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, customer premises equipment (CPE), a cellular phone, 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 computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, an appliance, a medical device or apparatus, a biosensor / device, a wearable device such as a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart wristband, a smart bracelet, etc.), an entertainment device (e.g., a music device, a video device, a satellite radio, etc.), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium. Some UEs may be considered machine type communication (MTC) devices or evolved MTC (eMTC) devices. For example, MTC and eMTC UEs include robots, drones, remote devices, sensors, meters, monitors, location tags, and the like that can communicate with a BS, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to a network or to a network (e.g., a wide area network such as the Internet or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.

[0039] Some wireless networks (e.g., LTE) utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, often also referred to as tones, bins, etc. Each subcarrier can be modulated with data. Modulation symbols are typically sent in the frequency domain with OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the subcarrier spacing can be 15 kHz, and the minimum resource allocation (called a "resource block" (RB)) can be 12 subcarriers (or 180 kHz). Therefore, the nominal Fast Fourier Transform (FFT) size can be equal to 128, 256, 512, 1024, or 2048 for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), respectively. The system bandwidth may be further divided into subbands. For example, a subband may cover 1.08 MHz (ie, 6 resource blocks), and for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, there may be 1, 2, 4, 8, or 16 subbands, respectively.

[0040] Although aspects of the examples described herein are associated with LTE technology, aspects of the present disclosure may be applicable to other wireless communication systems (e.g., NR). NR may utilize OFDM with CP on both the uplink and downlink, including support for half-duplex operation using TDD. Beamforming may be supported, and the beam direction may be dynamically configured. MIMO transmission with precoding may also be supported. MIMO configurations in the DL may support up to 8 transmit antennas with multi-layer DL transmission of up to 8 streams and up to 2 streams per UE. Multi-layer transmission of up to 2 streams per UE may be supported. Aggregation of multiple cells of up to 8 serving cells may be supported.

[0041] In some examples, access to the air interface can be scheduled. A scheduling entity (e.g., a BS) allocates resources for communications between some or all devices and equipment within its service area or cell. A scheduling entity can be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communications, subordinate entities utilize the resources allocated by the scheduling entity. The base station is not the only entity that acts as a scheduling entity. In some examples, a UE can act as a scheduling entity and can schedule resources for one or more subordinate entities (e.g., one or more other UEs), and other UEs can use the resources scheduled by the UE for wireless communications. In some examples, a UE can act as a scheduling entity in a peer-to-peer (P2P) network and / or a mesh network. In the mesh network example, in addition to communicating with the scheduling entity, UEs can also communicate directly with each other.

[0042] exist Figure 1 In FIG, a solid line with double arrows represents desired transmissions between a UE and a serving BS, which is a BS designated to serve the UE on the downlink and / or uplink. A thin dashed line with double arrows indicates interfering transmissions between the UE and the BS.

[0043] Figure 2 Describes the Figure 1 An exemplary logical architecture of a distributed radio access network (RAN) 200 implemented in the wireless communication network 100 is shown. A 5G access node 206 may include an access node controller (ANC) 202. The ANC 202 may be a central unit (CU) of the distributed RAN 200. A backhaul interface to a next generation core network (NG-CN) 204 may terminate at the ANC 202. A backhaul interface to a neighboring next generation access node (NG-AN) 210 may terminate at the ANC 202. The ANC 202 may include one or more TRPs 208 (e.g., cells, BSs, gNBs, etc.).

[0044] The TRP 208 may be a distributed unit (DU). The TRP 208 may be connected to a single ANC (e.g., ANC 202) or to more than one ANC (not shown). For example, for RAN sharing, Radio as a Service (RaaS), and service-specific ANC deployments, the TRP 208 may be connected to more than one ANC. Each TRP 208 may include one or more antenna ports. The TRP 208 may be configured to serve traffic for a UE individually (e.g., dynamically selected) or jointly (e.g., joint transmission).

[0045] The logical architecture of the distributed RAN 200 may support fronthauling solutions across different deployment types. For example, the logical architecture may be based on transmit network capabilities (eg, bandwidth, latency, and / or jitter).

[0046] The logical architecture of the distributed RAN 200 may share features and / or components with LTE. For example, the next generation access node (NG-AN) 210 may support dual connectivity with NR and may share a common fronthaul for LTE and NR.

[0047] The logical architecture of the distributed RAN 200 may enable collaboration between TRPs 208, for example, within and / or across TRPs via the ANC 202. An inter-TRP interface may not be used.

[0048] Logical functions may be dynamically distributed in the logical architecture of the distributed RAN 200. The radio resource control (RRC) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical (PHY) layer may be adaptively arranged at the DU (e.g., TRP 208) or the CU (e.g., ANC 202).

[0049] Figure 3 An example physical architecture of a distributed RAN 300 is shown in accordance with aspects of the present disclosure. A centralized core network unit (C-CU) 302 may host core network functions. The C-CU 302 may be centrally deployed. C-CU 302 functions may be offloaded (e.g., to Advanced Wireless Services (AWS)) to best handle peak capacity.

[0050] The centralized RAN unit (C-RU) 304 may host one or more ANC functions. Alternatively, the C-RU 304 may host core network functions locally. The C-RU 304 may have a distributed deployment. The C-RU 304 may be located close to the network edge.

[0051] The DU 306 may have one or more TRPs (edge ​​nodes (EN), edge units (EU), radio heads (RH), smart radio heads (SRH), etc.) The DU may be located at the edge of the network with radio frequency (RF) capabilities.

[0052] Figure 4 BS 110 and UE 120 (eg Figure 1) that may be used to implement aspects of the present disclosure. For example, antenna 452, processors 466, 458, 464, and / or controller / processor 480 of UE 120 may execute (or be used to execute) Figure 8 Similarly, antenna 434, processors 420, 430, 438, and / or controller / processor 440 of BS 110 may perform (or be configured to perform) Figure 7 Operation 700.

[0053] At BS 110, a transmit processor 420 may receive data from a data source 412 and control information from a controller / processor 440. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), or the like. The data may be for a physical downlink shared channel (PDSCH), or the like. Processor 420 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. Processor 420 may also generate reference symbols, such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a cell-specific reference signal (CRS). A transmit (TX) multiple-input multiple-output (MIMO) processor 430 may perform spatial processing (e.g., precoding) on ​​the data symbols, control symbols, and / or reference symbols (if applicable), and provide output symbol streams to modulators (MODs) 432a through 432t. Each modulator 432 can process its own output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator can further process (e.g., convert to analog, amplify, filter, and frequency upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 432a through 432t can be transmitted via antennas 434a through 434t, respectively.

[0054] At UE 120, antennas 452a through 452r may receive downlink signals from base station 110 and provide received signals to demodulators (DEMODs) in transceivers 454a through 454r, respectively. Each demodulator 454 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples. Each demodulator may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 456 may receive received symbols from all demodulators 454a through 454r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 458 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120 to a data sink 460, and provide decoded control information to a controller / processor 480.

[0055] On the uplink, at the UE 120, a transmit processor 464 may receive data (e.g., for a physical uplink shared channel (PUSCH)) from a data source 462 and control information (e.g., for a physical uplink control channel (PUCCH)) from the controller / processor 480 and process the data and control information. The transmit processor 464 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 464 may be precoded by the TX MIMO processor 466 (if applicable), further processed by the demodulators in the transceivers 454a through 454r (e.g., for SC-FDM, etc.), and transmitted back to the base station 110. At BS 110, the uplink signal from UE 120 may be received by antenna 434, processed by modulator 432, detected by MIMO detector 436 (if applicable), and further processed by receive processor 438 to obtain decoded data and control information sent by UE 120. Receive processor 438 may provide the decoded data to a data sink 439 and the decoded control information to controller / processor 440.

[0056] Controllers / processors 440 and 480 may direct the operation of BS 110 and UE 120, respectively. Processor 440 and / or other processors and modules at BS 110 may perform or direct the execution of processes for the techniques described herein. Memories 442 and 482 may store data and program codes for BS 110 and UE 120, respectively. Scheduler 444 may schedule UEs for data transmission on the downlink and / or uplink.

[0057] In LTE, the basic transmission time interval (TTI) or packet duration is a 1ms subframe. In NR, the subframe is still 1ms, but the basic TTI is called a slot. A subframe contains a variable number of slots (e.g., 1, 2, 4, 8, 16, ... slots) depending on the subcarrier spacing. An NR RB is 12 consecutive frequency subcarriers. NR can support a basic subcarrier spacing of 15 kHz, and other subcarrier spacings can be specified relative to the basic subcarrier spacing (e.g., 30 kHz, 60 kHz, 120 kHz, 240 kHz, etc.). Symbol and slot lengths scale with the subcarrier spacing. The CP length also depends on the subcarrier spacing.

[0058] Figure 5 is a diagram showing an example of a frame format 500 for NR. The transmission timeline for each of the downlink and uplink can be divided into units of radio frames. Each radio frame can have a predetermined duration (e.g., 10 ms), and each radio frame can be divided into 10 subframes indexed from 0 to 9, each subframe being 1 ms. Each subframe can include a variable number of slots depending on the subcarrier spacing. Each slot can include a variable number of symbol periods (e.g., 7 or 14 symbols) depending on the subcarrier spacing. An index can be assigned to the symbol period in each slot. A microslot (which can be referred to as a subslot structure) refers to a transmission time interval having a duration less than one slot (e.g., 2, 3, or 4 symbols).

[0059] Each symbol in a slot can indicate the link direction (e.g., DL, UL, or flexible) used for data transmission. The link direction can be dynamically switched for each subframe. The link direction can be based on the slot format. Each slot can include DL / UL data and DL / UL control information.

[0060] In NR, a synchronization signal (SS) block is transmitted. The SS block includes PSS, SSS and two symbols PBCH. It can be transmitted at a fixed time slot position (e.g. Figure 5SS blocks are sent using symbols 0-3 shown in . The UE can use PSS and SSS for cell search and acquisition. PSS can provide half-frame timing, and SS can provide CP length and frame timing. PSS and SSS can provide cell identification. PBCH carries some basic system information, such as downlink system bandwidth, timing information within the radio frame, SS burst set period, system frame number, etc. SS blocks can be organized into SS bursts to support beam scanning. Other system information such as remaining minimum system information (RMSI), system information block (SIB), and other system information (OSI) can be sent on the physical downlink shared channel (PDSCH) in certain subframes. For example, an SS block can be transmitted 64 times, and for mmW, up to 64 different beam directions can be transmitted. Up to 64 transmissions of SS blocks are called SS burst sets. SS blocks in an SS burst set are transmitted in the same frequency region, while SS blocks in different SS burst sets can be transmitted at different frequency positions.

[0061] In some environments, two or more slave entities (e.g., UEs) can communicate with each other using sidelink signals. Practical applications of such sidelink communications may include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, mission-critical grids, and / or various other appropriate applications. Generally, a sidelink signal may refer to a signal that is transmitted from one slave entity (e.g., UE1) to another slave entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), even though the scheduling entity may be used for scheduling and / or control purposes. In some examples, licensed spectrum may be used to transmit sidelink signals (unlike wireless local area networks that typically use unlicensed spectrum).

[0062] The UE can operate in various radio resource configurations, including configurations associated with sending pilots using a dedicated set of resources (e.g., a radio resource control (RRC) dedicated state, etc.) or configurations associated with sending pilots using a common set of resources (e.g., an RRC common state, etc.). When operating in the RRC dedicated state, the UE can select a dedicated set of resources for sending pilot signals to the network. When operating in the RRC common state, the UE can select a common set of resources for sending pilot signals to the network. In either case, the pilot signals sent by the UE can be received by one or more network access devices (e.g., an AN, a DU, or a portion thereof). Each receiving network access device can be configured to receive and measure pilot signals sent on the common set of resources, and also receive and measure pilot signals sent on the dedicated set of resources allocated to the UE, where the network access device is a member of the UE's network access device monitoring set. One or more of the receiving network access devices, or the CU to which the receiving network access device sends measurements of the pilot signals, can use these measurements to identify the UE's serving cell, or to initiate a change of the serving cell of one or more of the UEs.

[0063] Inter-band carrier aggregation example

[0064] In carrier aggregation (CA) scenarios, multiple component carriers (CCs) can be used to widen bandwidth and increase per-link data rates. CA can be used in systems that utilize frequency division duplex (FDD), time division duplex (TDD), or both. For example, the aggregated carriers can be any combination of FDD and TDD carriers.

[0065] In some aspects, downlink (DL) and uplink (UL) resources may be allocated to a CA-capable UE on aggregated resources comprising up to 16 CCs, depending on the UE's capabilities. Typically, the number of UL CCs does not exceed the number of DL CCs.

[0066] For practical reasons, CA can be specified for a large number of combinations of operating bands and number of CCs. To specify different CA combinations, CA bandwidth classes or CA configurations can be used. A CA bandwidth class indicates a combination of maximum aggregate bandwidth and maximum number of CCs, while a CA configuration indicates a combination of operating band and CA bandwidth class.

[0067] For inter-band CA, the current system supports up to three operating bands. Therefore, different CCs can be planned to provide different coverage. In some cases, inter-band CA can be deployed to improve UL coverage and overcome issues caused by higher path loss at higher frequencies.

[0068] When implementing CA, there may be tradeoffs (in terms of cost and performance) when using two operating bands compared to using three operating bands. In one example, there are three operating bands available for inter-band CA, such as N28 (FDD band @ 700 MHz, 2*30 MHz for DL ​​and UL), N41 (TDD band @ 2.6 GHz, 100 MHz + 60 MHz), and N79 (TDD band @ 4.9 GHz, 100 MHz).

[0069] For example, some inter-band CA with two operating bands have good DL and UL performance in the cell center (e.g., PCC@N41+SCC@N79), but suffer from poor DL ​​performance at the cell edge due to limited DL bandwidth (e.g., PCC@N28+SCC@N41 or N79).

[0070] In the following Figure 6A and Figure 6B This example is shown in Some inter-band CA with three operating bands has good DL and UL performance at the cell center (e.g., PCC@N41+SCC@N79+SCC@n28) and cell edge (PCC@N28+SCC@N41+SCC@N79), but is cost-prohibitive because such operation requires at least three independent radio frequency (RF) receive chains.

[0071] Figure 6A and Figure 6B shows a configuration that is Figure 6A The cell center and Figure 6B Figure 1 shows an example scenario of a cell edge with multiple concurrently connected UEs in multiple operating bands. Traditional configurations can configure up to two CCs for simultaneous communication. Furthermore, UL CCs are typically limited to using the same CC for DL. For a UE in the cell center, only one combination of two of the four DL CCs will be implemented.

[0072] like Figure 6A As shown in the cell center, receive chains 0 and 1 can be configured for frequency bands N41 at the PCC and N79 at the SCC, respectively. Transmit chains 0 and 1 can be configured to be the same as frequency bands N41 at the PCC and N79 at the SCC, respectively. Therefore, with this configuration, the UE can achieve a 200 MHz bandwidth on both the uplink and downlink at the cell center.

[0073] like Figure 6BAs shown in Figure 2, receive chains 0 and 1 can be configured for band N41 at the PCC and band N28 at the SCC, respectively. Transmit chains 0 and 1 are configured identically. For cell-edge UEs, the low-frequency CC (e.g., N28) is used to improve UL coverage, while DL performance is poor due to the corresponding limited DL bandwidth (e.g., 30 MHz @ N28). In other words, with this configuration, the UE can achieve only 130 MHz bandwidth on both the uplink and downlink at the cell edge.

[0074] This configuration limits the performance and use of CA. Figure 6A and 6B The same DL / UL configuration shown in is used to utilize the available CCs.

[0075] Example fast switching between multiple component carriers (CCs)

[0076] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for switching a UE between multiple CCs based on the UE's capabilities, such that the UE is configured with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous communications.

[0077] For example, the UE can switch between multiple activated CCs. The number of activated CCs available for switching is greater than the number of CCs supported by the UE for simultaneous continuous communication. Although the configured (or activated) UL CCs are generally limited to the same CCs used for DL, the CCs actually used for DL ​​and UL may be different. Switching enables the UE to optimize or maximize bandwidth usage and achieve high DL or UL data rates.

[0078] Figure 7 is a flow diagram illustrating example operations 700 for wireless communications by network entities, in accordance with certain aspects of the present disclosure. Operations 700 may be performed, for example, by BS 110 in wireless communications network 100.

[0079] Operations 700 begin at 702 by first receiving capability signaling from a UE indicating the UE's capability of switching between multiple CCs.

[0080] At 704, the network entity configures the UE with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous communications. At 706, the network entity schedules the UE to communicate on the activated CCs based on the indicated capability of the UE to switch between CCs.

[0081] Figure 8 is a flow chart illustrating example operations 800 for wireless communication, which may be considered as Figure 8For example, operation 800 may be performed by a UE (e.g., UE 120 in wireless communication network 100), wherein the UE is capable of communicating with a network entity (which performs Figure 7 Operation 700) is used to quickly switch between CCs.

[0082] Operations 800 begin at 802 by sending capability signaling to a network entity indicating the UE's ability to switch between multiple CCs. At 804, the UE receives signaling configuring the UE with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous communication. At 806, the UE switches between CCs to communicate on the activated CCs based on the indicated capability of the UE to switch between CCs.

[0083] Reference Figure 9A and Figure 9B The various examples shown in and described below can be understood Figure 7 and Figure 8 Operations 700 and 800.

[0084] Figure 9A and 9B shows a configuration in Figure 9A The cell center and Figure 9B Figure 1 illustrates an example scenario for a UE switching between two or more operating frequency bands at a cell edge in a LTE-LTE network. In the example shown, the UE reports its capabilities to the gNB to indicate that it supports fast receive switching between multiple DL CCs. In some aspects, the UE also reports its capabilities to support fast transmit switching between multiple UL CCs. The UE may report both DL CC and UL CC capabilities to the gNB jointly or individually.

[0085] In one aspect, a UE may be configured with up to N DL DL carriers and up to N UL UL carriers as activated CCs. The gNB can configure the UE based on its ability to quickly transmit or receive between CCs. Without switching, the UE can support a maximum number of M DL and / or the maximum number M of simultaneously received DL carriers UL In other words, the capability signaling from the UE may indicate the M carriers supported by the UE for simultaneous transmission. DL or M UL At least one of .

[0086] However, if the UE indicates the capability of fast switching between CCs, the gNB may configure the UE with a maximum number of simultaneous transmissions (M) greater than the maximum number supported by the UE. DL or M UL) More activated CCs make N DL ≥M DL and / or N UL ≥M UL (usually N DL ≥N UL ).

[0087] If the number of actually activated DL CCs is greater than M DL And / or the number of actually activated UL CCs is greater than M UL , then only a portion of the activated DL carriers (maximum M DL ) and a portion of activated UL carriers (maximum M UL ) is used (1) dynamically or (2) semi-statically for PDSCH reception and PUSCH transmission, as described below.

[0088] For dynamic switching between CCs, which CC will be used for actual PDSCH reception and / or PUSCH transmission can be based on gNB scheduling (e.g., via PDCCH carrying DCI). In this case, the gNB can consider the switching gap based on capability signaling when scheduling PDSCH and / or PUSCH (e.g., when switching from CC1 to CC2).

[0089] In certain aspects of the dynamic switching scenario, the scheduling information comes from the primary cell (PCell). Therefore, cross-carrier scheduling can be used (e.g., scheduling PDSCH transmissions on one or more activated SCells).

[0090] For semi-static switching between CCs, at least one of radio resource control (RRC) signaling or medium access control (MAC) control elements (CEs) may be used to indicate which CCs will be used for actual PDSCH reception and / or PUSCH transmission. For example, RRC signaling or MAC CEs may be sent via a CC of the primary cell (PCell) and indicate one or more secondary cell (SCell) CCs on which the PDSCH or PUSCH is scheduled. This scheduling information may come from both the PCell and the SCell.

[0091] In this semi-static switching scenario, scheduling information can come from the PCell or one or more SCells (i.e., both cross-carrier scheduling and self-carrier scheduling can be used). In some cases, the UE can monitor the PDCCH only for the SCell indicated as a receiving / transmitting SCell in the RRC or MAC-CE. For SCells indicated as non-receiving cells for PDSCH or non-transmitting SCells for PUSCH, if measurement gaps are configured on the DL, the UE will continue to perform CSI measurements and beam management, and if SRS is configured, transmit SRS via SRS carrier switching.

[0092] like Figure 9A As shown in , at the cell center, four CCs are configured to achieve maximum bandwidth and data rate. As shown in the figure, both DL and UL communications have N41@100MHz and N79@100MHz frequency bands.

[0093] As the UE moves to the cell edge, Figure 9B As shown in , for receive chain 1, DL reception switches to band N41@60MHz, while for transmit chain 1, UL transmission switches to band N28@30MHz. By switching to different DL and UL CCs, good DL performance can be achieved at higher bandwidths even if N28 is used for UL coverage improvement. Figure 9B The fast switching capability shown in the figure is that the UE can achieve 160MHz bandwidth on the downlink at the cell edge, which is relatively Figure 6A The example 130 MHz downlink bandwidth shown significantly increases bandwidth.

[0094] In this manner, the UE supports inter-band CA with two operating bands and inter-band CA with three or more (e.g., four or more in other examples) operating bands for simultaneous communication through switching. For DL ​​CA, any combination of two DL carriers out of a total of four DL carriers can be implemented through dynamic scheduling or semi-static configuration.

[0095] Figure 10 1 shows a communication device 1000 (e.g., a gNB) that may include various components (e.g., corresponding to unit functional components) configured to perform operations of the techniques disclosed herein (e.g., Figure 7 ). Communication device 1000 includes a processing system 1002 coupled to a transceiver 1008 (e.g., a transmitter and / or a receiver). Transceiver 1008 is configured to transmit and receive signals for communication device 1000, such as the various signals described herein, via antenna 1016. Processing system 1002 may be configured to perform processing functions for communication device 1000, including processing signals received and / or to be transmitted by communication device 1000.

[0096] The processing system 1002 includes a processor 1004 coupled to a computer-readable medium / memory 1012 via a bus 1006. In some aspects, the computer-readable medium / memory 1012 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 1004, cause the processor 1004 to perform Figure 7Operations 700 as shown or other operations for performing various techniques discussed herein. In certain aspects, computer-readable medium / memory 1012 stores: code 1014 for receiving capability signaling from a user equipment (UE) indicating the UE's ability to switch between multiple component carriers (CCs); code 1016 for configuring the UE with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous communication; and code 1018 for scheduling the UE to communicate on the activated CCs based on the indicated capability of the UE to switch between CCs. In certain aspects, processor 1004 has circuitry configured to implement the code stored in computer-readable medium / memory 1012. Processor 1004 includes circuitry 1019 for receiving capability signaling from a user equipment (UE) indicating the UE's ability to switch between multiple component carriers (CCs); circuitry 1020 for configuring the UE with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous communication; and circuitry 1022 for scheduling the UE to communicate on the activated CCs based on the indicated capability of the UE to switch between CCs.

[0097] Figure 11 A communication device 1100 (eg, UE) is shown that may include various components (eg, corresponding to unit functional components) configured to perform operations of the techniques disclosed herein (eg, Figure 8 ). Communication device 1100 includes a processing system 1102 coupled to a transceiver 1108 (e.g., a transmitter and / or a receiver). Transceiver 1108 is configured to transmit and receive signals for communication device 1100, such as the various signals described herein, via antenna 1110. Processing system 1102 may be configured to perform processing functions for communication device 1100, including processing signals received and / or to be transmitted by communication device 1100.

[0098] The processing system 1102 includes a processor 1104 coupled to a computer-readable medium / memory 1112 via a bus 1106. In some aspects, the computer-readable medium / memory 1112 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 1104, cause the processor 1104 to perform Figure 8The illustrated operations 800 or other operations for performing various techniques discussed herein. In certain aspects, the computer-readable medium / memory 1112 stores: code 1114 for sending capability signaling to a network entity indicating the UE's ability to switch between multiple component carriers (CCs); code 1116 for receiving signaling to configure the UE with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous communication; and code 1118 for switching between CCs to communicate on the activated CCs based on the indicated capability of the UE to switch between CCs. In certain aspects, the processor 1104 has circuitry configured to implement the code stored in the computer-readable medium / memory 1112. Processor 1104 includes: circuit 1119 for sending capability signaling to a network entity indicating the UE's ability to switch between multiple component carriers (CCs); circuit 1120 for receiving signaling to configure the UE with a number of activated CCs that exceeds the number of CCs supported by the UE for simultaneous communication; and circuit 1122 for switching between CCs to communicate on the activated CCs based on the indicated capability of the UE to switch between CCs.

[0099] The methods disclosed herein include one or more steps or actions for implementing these methods. These method steps and / or actions may be interchangeable without departing from the scope of the present invention. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions may be modified without departing from the scope of the present invention.

[0100] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. For example, "at least one of a, b, or c" is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination with multiples of the same elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0101] As used herein, the term "determine" encompasses a wide variety of actions. For example, "determine" may include calculating, computing, processing, deriving, investigating, querying (e.g., querying a table, database, or other data structure), ascertaining, and the like. Furthermore, "determine" may also include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. Furthermore, "determine" may also include resolving, selecting, choosing, establishing, and the like.

[0102] To enable any person of ordinary skill in the art to implement the various aspects described herein, the above description is centered around various aspects. It is obvious to those of ordinary skill in the art that various modifications to these aspects will be readily apparent, and the overall principles defined herein may also be applicable to other aspects. Therefore, the present invention is not limited to the aspects shown herein, but is consistent with the full scope of the present invention, wherein, unless otherwise specified, modifying a component in the singular does not mean "one and only one", but may be "one or more". Unless otherwise specifically stated, the term "some" refers to one or more. All structural and functional equivalents of the components of the various aspects described throughout this disclosure are expressly incorporated herein by reference and are intended to be covered by the claims, and these structural and functional equivalents are or will be known to those of ordinary skill in the art. In addition, no disclosure herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. Furthermore, any claim element should not be construed under 35 U.S.C. §112(f) unless the element is explicitly recited using the wording of a “functional means” or, in the case of a method claim, the element is recited using the wording of a “functional step.”

[0103] The various operations of the methods described above may be performed by any suitable means capable of performing the corresponding functions. These means may include various hardware and / or software components and / or modules, including but not limited to: circuits, application-specific integrated circuits (ASICs), or processors. Generally, where operations are shown in the figures, these operations may have corresponding paired functional module components with similar numbering.

[0104] The various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure herein may be implemented or executed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof for performing the functions described herein. A general-purpose processor may be a microprocessor, or the processor may be any commercially available processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration.

[0105] When implemented in hardware, an exemplary hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. Depending on the specific application and overall design constraints of the processing system, the bus may include any number of interconnected buses and bridges. The bus may link together various circuits including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement signal processing functions at the physical layer. In the user terminal 120 (see Figure 1 ), a user interface (e.g., keyboard, display, mouse, joystick, etc.) may also be connected to the bus. The bus also links various other circuits such as clock sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and are not described in any further detail. The processor may be implemented using one or more general-purpose processors and / or special-purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits capable of executing software. One of ordinary skill in the art will recognize how to best implement the described functionality of the processing system depending on the specific application and the overall design constraints imposed on the entire system.

[0106] When implemented using software, these functions may be stored on a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Software should be broadly interpreted to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms. Computer-readable media include computer storage media and communication media, where communication media includes any medium that facilitates the transfer of computer programs from one location to another. The processor may be responsible for managing the bus and general processing, including executing software stored on the machine-readable storage medium. The computer-readable storage medium may be coupled to the processor so that the processor can read information from and write information to the storage medium. Alternatively, the storage medium may be part of the processor. For example, the machine-readable medium may include a transmission line, a carrier waveform modulated with data, and / or a computer-readable storage medium separate from the wireless node with instructions stored thereon, all of which are accessible to the processor via a bus interface. Alternatively, or in addition, the machine-readable medium or any portion thereof may be an integral part of the processor, for example, as may be the case with a cache and / or general register file. For example, examples of machine-readable storage media may include RAM (random access memory), flash memory, ROM (read-only memory), PROM (programmable read-only memory), EPROM (erasable programmable read-only memory), EEPROM (electrically erasable programmable read-only memory), registers, magnetic disks, optical disks, hard disks, or any other suitable storage media, or any combination thereof. The machine-readable medium may be embodied in a computer program product.

[0107] A software module may include a single instruction or multiple instructions. Software modules may be distributed across several different code segments, within different programs, and across multiple storage media. A computer-readable medium may include multiple software modules. These software modules include instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. Software modules may include a transmission module and a reception module. Each software module may be located in a single storage device or distributed across multiple storage devices. For example, when a triggering event occurs, a software module may be loaded from a hard drive into RAM. During execution of a software module, the processor may load some of these instructions into a cache to increase access speed. Subsequently, one or more cache lines may be loaded into a general register file for execution by the processor. When referring to the functionality of a software module below, it should be understood that the processor implements the functionality when executing instructions from that software module.

[0108] Furthermore, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared (IR), wireless, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Optical disks, where magnetic disks typically reproduce data magnetically, and optical disks, which use lasers to reproduce data optically. Thus, in some aspects, computer-readable media may include non-transitory computer-readable media (e.g., tangible media). Furthermore, for other aspects, computer-readable media may include transitory computer-readable media (e.g., signals). Combinations of the foregoing should also be included within the scope of protection of computer-readable media.

[0109] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, the computer program product may include a computer-readable medium having instructions stored thereon (and / or encoded thereon), the instructions being executable by one or more processors to perform the operations described herein. For example, a computer program product for performing the operations described herein and Figure 7 and / or Figure 8 Instructions for the operations shown in .

[0110] In addition, it should be understood that the modules and / or other appropriate units for performing the methods and techniques described herein can be downloaded and / or obtained on demand by a user terminal and / or a base station. For example, such a device can be coupled to a server to facilitate the implementation of the units for transmitting the methods described herein. Alternatively, the various methods described herein can be provided by a storage unit (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk, etc.), so that the user terminal and / or base station can obtain the various methods when the storage unit is coupled to or provided to the device. In addition, any other appropriate technology for providing the methods and techniques described herein to a device can also be used.

[0111] It should be understood that the present invention is not limited to the precise configuration and components shown above. Various modifications, changes and variations may be made to the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the present invention.

Claims

1. A method for wireless communication at a network entity, comprising: receiving capability signaling from a user equipment (UE) indicating a capability of the UE to switch between a plurality of component carriers (CCs), wherein the capability of the UE is based on a speed at which the UE can switch between CCs; configuring the UE with a number of activated CCs that exceeds a number of CCs supported by the UE for simultaneous communications; and The UE is scheduled to communicate on the activated CC based on the indicated capability of the UE to switch between CCs.

2. The method according to claim 1, wherein: The capability signaling indicates at least one of: a maximum number of downlink CCs supported by the UE for simultaneous reception, or a maximum number of uplink CCs supported by the UE for simultaneous transmission; and The configuration includes at least one of the following: configuring the UE with a number of activated downlink CCs, the number of activated downlink CCs exceeding the maximum number of downlink CCs supported by the UE for simultaneous reception; or The UE is configured with a number of activated uplink CCs, the number of activated uplink CCs exceeding the maximum number of uplink CCs supported by the UE for simultaneous transmission.

3. The method according to claim 1, wherein Scheduling the UE to communicate on the activated CCs includes indicating, via a physical downlink control channel (PDCCH) on a first CC, one or more of the activated CCs to be used for a physical downlink shared channel (PDSCH).

4. The method according to claim 3, wherein: When scheduling the PDSCH, the network entity considers a switching gap based on the capability signaling.

5. The method according to claim 1, wherein Scheduling the UE to communicate on the activated CCs includes indicating, via a physical downlink control channel (PDCCH) on a first CC, one or more of the activated CCs to be used for a physical uplink shared channel (PUSCH) for the UE.

6. The method according to claim 5, wherein: When scheduling the PUSCH, the network entity considers a switching gap based on the capability signaling.

7. The method according to claim 1, wherein Scheduling the UE to communicate on the activated CCs includes indicating, via at least one of radio resource control (RRC) signaling or medium access control (MAC) control elements (CE), one or more of the activated CCs to be used for at least one of a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH).

8. The method according to claim 7, wherein: The RRC signaling or MAC CE is sent via the CC of the primary cell and indicates one or more secondary cell CCs on which the PDSCH or PUSCH is scheduled.

9. The method according to claim 7, wherein: The RRC signaling or MAC CE is sent via CCs of one or more secondary cells on which the PDSCH or PUSCH is scheduled.

10. A method for wireless communication of a user equipment (UE), comprising: sending capability signaling to a network entity indicating a capability of the UE to switch between multiple component carriers (CCs), wherein the capability of the UE is based on a speed at which the UE can switch between CCs; receiving signaling to configure the UE with a number of activated CCs exceeding a number of CCs supported by the UE for simultaneous communication; and Switching between CCs to communicate on the activated CC is performed based on the indicated capability of the UE to switch between CCs.

11. The method according to claim 10, wherein: The capability signaling indicates at least one of: a maximum number of downlink CCs supported by the UE for simultaneous reception, or a maximum number of uplink CCs supported by the UE for simultaneous transmission; and The UE is configured with at least one of the following: the number of activated downlink CCs exceeding the maximum number of downlink CCs supported by the UE for simultaneous reception; or The number of activated uplink CCs exceeds the maximum number of uplink CCs supported by the UE for simultaneous transmission.

12. The method according to claim 10, wherein: The UE is scheduled to communicate on the activated CCs via a physical downlink control channel PDCCH on a first CC, and one or more activated CCs among the activated CCs will be used for at least one of a physical downlink shared channel PDSCH or a physical uplink shared channel PUSCH.

13. The method according to claim 10, wherein: The UE is scheduled to communicate on the activated CCs via at least one of radio resource control (RRC) signaling or medium access control (MAC) control element (CE), and one or more activated CCs among the activated CCs are to be used for a physical downlink shared channel (PDSCH) or a physical uplink shared channel (PUSCH).

14. The method according to claim 13, wherein The RRC signaling or MAC CE is sent via the CC of the primary cell and indicates one or more secondary cell CCs that are instructed to receive or transmit.

15. The method according to claim 14, wherein The UE only monitors the secondary cell CC that is instructed to receive or transmit the PDCCH.

16. The method according to claim 13, wherein: The RRC signaling or MAC CE is sent via the CC of one or more secondary cells on which the PDSCH or PUSCH is scheduled.

17. The method of claim 13, further comprising at least one of the following: If a measurement gap is configured on the downlink, performing channel state information (CSI) measurement and beam management on the secondary cell (CC) that is not indicated as receiving; or If sounding reference signal SRS carrier switching is configured, the SRS is transmitted via SRS carrier switching.

18. An apparatus for wireless communication at a network entity, comprising: means for receiving capability signaling from a user equipment (UE) indicating a capability of the UE to switch between a plurality of component carriers (CCs), wherein the capability of the UE is based on a speed at which the UE can switch between CCs; means for configuring the UE with a number of activated CCs that exceeds a number of CCs supported by the UE for simultaneous communication; and means for scheduling the UE to communicate on the activated CC based on the indicated capability of the UE to switch between CCs.

19. An apparatus for wireless communication of a user equipment (UE), comprising: means for sending capability signaling to a network entity indicating a capability of the UE to switch between a plurality of component carriers (CCs), wherein the capability of the UE is based on a speed at which the UE can switch between CCs; means for receiving signaling to configure the UE with a number of activated CCs exceeding a number of CCs supported by the UE for simultaneous communication; and means for switching between CCs to communicate on the activated CC based on the indicated capability of the UE to switch between CCs.

20. An apparatus for wireless communication, comprising: a receiver configured to receive capability signaling from a user equipment (UE) indicating a capability of the UE to switch between a plurality of component carriers (CCs), wherein the capability of the UE is based on a speed at which the UE can switch between CCs; and At least one processor is configured to configure the UE with a number of activated CCs that exceeds a number of CCs supported by the UE for simultaneous communication, and schedule the UE to communicate on the activated CCs based on an indicated capability of the UE to switch between CCs.

21. A user equipment (UE), comprising: a transmitter configured to send capability signaling to a network entity indicating a capability of the UE to switch between a plurality of component carriers (CCs), wherein the capability of the UE is based on a speed at which the UE can switch between CCs; a receiver configured to receive signaling configuring the UE with a number of activated CCs exceeding a number of CCs supported by the UE for simultaneous communication; and At least one processor is configured to switch between CCs to communicate on the activated CC based on the indicated capability of the UE to switch between CCs.

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