Radio frequency considerations for bandwidth part (BWP) selection

Abstract

Certain aspects of this disclosure provide techniques and apparatus for identifying one or more preferred bandwidth portions (BWPs) based on radio frequency (RF) performance degradation considerations. For example, preferred BWPs may be selected to avoid self-interference, avoid voltage-controlled oscillator pulling, avoid thermal throttling, implement or improve the use of a multi-subscriber identification module (MSIM), or combinations thereof. In a general sense, examples of the disclosed techniques performed by a user equipment (UE) include: receiving signaling from a network entity to configure multiple BWPs for the UE; determining a preferred BWP based on an amount of RF performance degradation associated with one or more of the multiple BWPs; and signaling the preferred BWP to the network entity.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to U.S. Application No. 17 / 016166, filed September 9, 2020, which is hereby assigned to the assignee of this application and whose entire contents are expressly incorporated herein by reference. Technical Field

[0003] This disclosure relates to wireless communication, and more specifically, to techniques for indicating the preferred bandwidth part (BWP) of a user equipment (UE). Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. These wireless communication systems can employ multiple access technologies that enable communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power, etc.). 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 (SCFDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, to name just a few.

[0005] In some examples, a wireless multiple access communication system may include multiple base stations (BS), each capable of simultaneously supporting communication with multiple communication devices (also known as user equipment (UE)). In LTE or LTE-A networks, a set of one or more base stations can define 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.). A set of one or more DUs communicating with the CUs may define an access node (e.g., which may be referred to as a BS, 5G NB, next-generation NodeB (gNB or gNodeB), transmission reception point (TRP), etc.). The BS or DU may communicate with a set of UEs on downlink channels (e.g., for transmissions from the BS or DU to the UE) and uplink channels (e.g., for transmissions from the UE to the BS or DU).

[0006] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different wireless devices to communicate at the city, country, region, and even global levels. NR (e.g., New Radio or 5G) is an example of an emerging telecommunications standard. NR is a set of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband internet access by improving spectrum efficiency, reducing costs, improving service, utilizing new spectrum, and better integrating with other open standards using OFDMA with a cyclic prefix (CP) on both the downlink (DL) and uplink (UL). To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0007] However, with the continued growth in demand for mobile broadband access, further improvements to NR and LTE technologies are needed. Preferably, these improvements should be applicable to other multiple access technologies and telecommunications standards that employ these technologies. Summary of the Invention

[0008] The systems, methods, and apparatus of this disclosure each have several aspects, none of which is solely responsible for its desired properties. Without limiting the scope of this disclosure as expressed by the appended claims, some features will now be briefly discussed. After considering this discussion, and particularly after reading the section entitled "Detailed Description," one will understand how the features of this disclosure provide advantages including improved communication between access points and stations in a wireless network.

[0009] Certain aspects of this disclosure generally relate to an apparatus for wireless communication. The apparatus includes a memory and at least one processor coupled to the memory. The at least one processor is configured to: receive signaling configuring a plurality of bandwidth portions (BWPs) for the apparatus; determine a preferred BWP from the plurality of BWPs based on a radio frequency (RF) performance degradation associated with one or more of the configured BWPs; and signal the preferred BWP to a network entity.

[0010] Certain aspects of this disclosure generally relate to a method for wireless communication that can be performed by a user equipment (UE). The method generally includes: receiving signaling to configure a plurality of bounding windows (BWPs) for the UE; determining a preferred BWP from the plurality of BWPs based on a radio frequency (RF) performance degradation associated with one or more of the BWPs; and signaling the preferred BWP to a network entity.

[0011] Certain aspects of this disclosure generally relate to an apparatus for wireless communication. The apparatus generally includes: components for receiving signaling that configures a plurality of BWPs for the apparatus; components for determining a preferred BWP from the plurality of BWPs based on a radio frequency (RF) performance degradation associated with one or more of the BWPs; and components for signaling the preferred BWP to a network entity.

[0012] Certain aspects of this disclosure generally relate to a computer-readable medium having instructions stored thereon for: receiving signaling to configure a plurality of bandwidth portions (BWPs) for a UE; determining a preferred BWP from the plurality of BWPs based on a radio frequency (RF) performance degradation associated with one or more of the configured BWPs; and signaling the preferred BWP to a network entity.

[0013] The aspects include methods, apparatus, systems, computer-readable media, and processing systems, as fully described herein with reference to the accompanying drawings and illustrated therein.

[0014] To achieve the foregoing and related objectives, one or more aspects include the features fully described below and specifically pointed out in the claims. The following description and drawings set forth certain illustrative features of one or more aspects in detail. However, these features indicate only a few of the various ways in which the principles of each aspect can be employed. Attached Figure Description

[0015] To gain a more detailed understanding of the features described above, reference can be made to various aspects (as briefly outlined above), some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of the disclosure and should not be considered as limiting its scope, as the description may acknowledge other equally valid aspects.

[0016] Figure 1 This is a block diagram conceptually illustrating an example telecommunications system according to certain aspects of this disclosure.

[0017] Figure 2 This is a block diagram illustrating an example logical architecture of a distributed radio access network (RAN) according to certain aspects of this disclosure.

[0018] Figure 3 This is a diagram illustrating an example physical architecture of a distributed RAN according to certain aspects of this disclosure.

[0019] Figure 4 This is a block diagram conceptually illustrating the design of an example base station (BS) and user equipment (UE) according to certain aspects of this disclosure.

[0020] Figure 5 This is a diagram illustrating an example of implementing a communication protocol stack according to certain aspects of this disclosure.

[0021] Figure 6 An example of a frame format for a new radio (NR) system is shown, according to certain aspects of this disclosure.

[0022] Figure 7 Example operations for wireless communication by a UE are shown according to certain aspects of this disclosure.

[0023] Figure 8 An example preference based on the self-interference avoidance bandwidth portion (BWP) according to certain aspects of this disclosure is shown.

[0024] Figure 9 An example circuit diagram relating to BWP selection based on VCO traction avoidance, according to certain aspects of this disclosure, is shown.

[0025] Figure 10An example circuit diagram relating to BWP selection based on avoiding VCO traction is shown, according to certain aspects of this disclosure.

[0026] Figure 11 Example operations of selecting a BWP based on thermal constraints performed by a UE in accordance with certain aspects of this disclosure are shown.

[0027] Figure 12 An example selection of a BWP for a UE having a multi-subscriber identification module (SIM) is shown according to certain aspects of this disclosure.

[0028] Figure 13 A communication device according to various aspects of this disclosure may include various components configured to perform operations using the techniques disclosed herein.

[0029] For ease of understanding, the same reference numerals are used where possible to denote common elements shared by the figures. Elements disclosed in one aspect are intended to be usefully applied to other aspects without specific description. Detailed Implementation

[0030] This disclosure provides techniques for selecting a preferred bandwidth portion (BWP) for a user equipment (UE) based on radio frequency (RF) considerations. Since NR provides a mechanism for adaptively adjusting the UE's operating bandwidth by introducing a BWP, identifying one or more preferred BWPs for the UE can help optimize configuration for efficiency and reliability.

[0031] For illustrative purposes, a UE can be assigned a subset or portion of the total active BWP. A BWP can include downlink BWPs and uplink BWPs. Communication between the UE and the Transmit / Receive Point (TRP) uses the active BWP. The UE is not required to transmit or receive outside the configured frequency range of the active BWP. The concept of an active BWP improves energy efficiency.

[0032] In 5G NR, a UE can typically be configured with up to four BWPs. The network can activate one of the four BWPs for active operation at a time. Each of the four BWPs can have different parameters, such as bandwidth (BW), subcarrier spacing (SCS), and other network configurations. Based on various network-side considerations, the network can switch the UE to a specific BWP using, for example, BWP timer-based switching, downlink control information (DCI-based switching), and radio resource control (RRC) configuration or reconfiguration. Various aspects of this disclosure provide techniques for selecting one or more UE-preferred BWPs based on certain RF considerations to help avoid or mitigate performance degradation.

[0033] The following description provides examples and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made to the function and arrangement of the elements discussed without departing from the scope of this disclosure. Various procedures or components may be appropriately omitted, substituted, or added to the various examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described for some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Moreover, the scope of this disclosure is intended to cover apparatuses or methods practiced using structures, functions, or structures and functions other than or different from the aspects of this disclosure set forth herein. It should be understood that any aspect of the disclosure herein may be embodied by one or more elements of the claims. The term “exemplary” as used herein means “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects.

[0034] The techniques described in this article can be used in 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. CDMA networks can implement radio technologies such as Universal Terrestrial Radio Access (UTRA) and CDMA2000. UTRA includes Wideband CDMA (WCDMA) and other variants of Code Division Multiple Access. CDMA2000 covers the IS-2000, IS-95, and IS-856 standards. TDMA networks can implement radio technologies such as the Global System for Mobile Communication (GSM). OFDMA networks 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, and Flash-OFDMA. UTRA and E-UTRA are part of the Universal Mobile Telecommunication System (UMTS).

[0035] New Radio (NR) is an emerging wireless communication technology developed in conjunction with the 5G Technology Forum (5GTF). 3GPP Long Term Evolution (LTE) and LTE-A Advanced (LTE-A) are UMTS versions using EUTRA. 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 UMB are described in documents from an organization called the 3rd Generation Partnership Project 2 (3GPP2). The technologies described herein can be used in the aforementioned wireless network and radio technologies, as well as other wireless network and radio technologies. For clarity, although terms commonly associated with 3G and / or 4G wireless technologies may be used to describe aspects herein, aspects of this disclosure can be applied to communication systems based on other generations, such as 5G and later technologies (including NR).

[0036] Example wireless communication system

[0037] Figure 1An example wireless communication network 100 in which various aspects of this disclosure may be implemented is shown. For example, the wireless network may be a new radio (NR) network or a 5G network. As will be described in more detail herein, UE 120 may be configured to perform operation 700 and other methods regarding the selection of the preferred UE BWP described herein and discussed in more detail below.

[0038] like Figure 1 As shown, the wireless communication network 100 may include multiple base stations (BS) 110 and other network entities. BS 110 may include Transmit / Receive Points (TRPs), Node Bs (NBs), gNBs, access points (APs), New Radio (NR) BSs, gNodeBs, 5GNBs, etc. The NR network 100 may include a central unit. BS 110 may perform operations complementary to those performed by the UE.

[0039] A BS can be a station that communicates with a user equipment (UE). Each BS 110 can provide communication coverage for a specific geographic area. In 3GPP, the term "cell" can refer to the coverage area of ​​a Node B (NB) and / or the NB subsystem serving that coverage area, depending on the context in which the term is used. In NR systems, the term "cell" is interchangeable with next-generation NBs (gNBs or gNodeBs), NR BSs, 5G NBs, access points (APs), or transmit / receive points (TRPs). In some examples, a cell is not necessarily stationary, and the geographic area of ​​a cell can move depending on the location of a mobile BS. In some examples, base stations can interconnect with each other and / or with one or more other base stations or network nodes (not shown) in the wireless communication network 100 using any suitable transport network through various types of backhaul interfaces (such as direct physical connections, wireless connections, virtual networks, etc.).

[0040] Generally, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific Radio Access Technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, subcarrier, channel, tone, subband, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0041] A Base Station (BS) can provide communication coverage for macrocells, picocells, femtocells, and / or other cell types. A macrocell can cover a relatively large geographic area (e.g., a radius of several kilometers) and allows unrestricted access for UEs with service subscriptions. A picocell can cover a relatively small geographic area and allow unrestricted access for UEs with service subscriptions. A femtocell can cover a relatively small geographic area (e.g., a home) and allow restricted access for UEs associated with that femtocell (e.g., UEs in a Closed Subscriber Group (CSG), UEs of users in a home, etc.). A BS for a macrocell can be called a macro BS. A BS for a picocell can be called a pico BS. A BS for a femtocell can be called a femto BS or a home BS. Figure 1 In the example shown, BS 110a, 110b, and 110c can be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x can be a pico BS for pico cell 102x. BS 110y and 110z can be femto BSs for femto cells 102y and 102z, respectively. A BS can support one or more (e.g., three) cells.

[0042] The wireless communication network 100 may also include relay stations. A relay station is a station that receives data and / or other information transmissions from an upstream station (e.g., a BS or UE) and sends data and / or other information transmissions to a downstream station (e.g., a UE or BS). A relay station may also be a UE relaying transmissions for other UEs. Figure 1 In the example shown, relay station 110r can communicate with BS 110a and UE 120r to facilitate communication between BS 110a and UE 120r. A relay station can also be referred to as a relay BS, relay, etc.

[0043] The wireless communication network 100 can be a heterogeneous network comprising different types of base stations (BSs) (e.g., macro BSs, pico BSs, femto BSs, relays, etc.). These different types of BSs can have different transmission power levels, different coverage areas, and different effects on interference in the wireless communication network 100. For example, a macro BS can have a high transmission power level (e.g., 20 watts), while a pico BS, femto BS, and relay station can have a lower transmission power level (e.g., 1 watt).

[0044] The wireless communication network 100 can support synchronous or asynchronous operation. For synchronous operation, the base stations (BSs) can have similar frame timings, and transmissions from different BSs can be approximately time-aligned. For asynchronous operation, the BSs can have different frame timings, and transmissions from different BSs may not be time-aligned. The techniques described herein can be used for both synchronous and asynchronous operations.

[0045] Network controller 130 can be coupled to a collection of BSs and provide coordination and control for these BSs. Network controller 130 can communicate with BS 110 via backhaul. BS 110 can also communicate with each other via wireless or wired backhaul (e.g., directly or indirectly).

[0046] UE 120 (e.g., 120x, 120y, etc.) may be distributed throughout the wireless communication network 100, and each UE may be stationary or mobile. UE may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, customer premises equipment (CPE), cellular phone, smartphone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet computer, camera, gaming device, netbook, smartbook, ultrabook, appliance, medical device or medical equipment, biometric sensor / device, wearable device (such as smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), entertainment device (e.g., music device, video device, satellite radio, etc.), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, GPS device, or any other suitable device configured to communicate via wireless or wired media. Some UEs can be considered Machine-Type Communication (MTC) devices or Evolved MTC (eMTC) devices. MTC and eMTC UEs include those capable of communicating with a BS, another device (e.g., a remote device), or some other entity, such as robots, drones, remote devices, sensors, instruments, monitors, location tags, etc. For example, a wireless node can provide connectivity to a network (e.g., a wide area network such as the Internet or cellular networks) via wired or wireless communication links. Some UEs can be considered Internet-of-Things (IoT) devices, which can be Narrowband IoT (NB-IoT) devices.

[0047] 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 referred to as tones, frequency bands, etc. Each subcarrier can be modulated with data. Generally, modulation symbols are transmitted in the frequency domain using OFDM and in the time domain using 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 could be 15 kHz, and the minimum resource allocation (called a "resource block" (RB)) could be 12 subcarriers (or 180 kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, the nominal Fast Fourier Transform (FFT) size can be 128, 256, 512, 1024, or 2048, respectively. The system bandwidth can also be divided into subbands. For example, a subband can cover 1.08 MHz (i.e., 6 resource blocks), and for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, there can be 1, 2, 4, 8, or 16 subbands, respectively.

[0048] While the example aspects described herein may be associated with LTE technology, these aspects of the disclosure are applicable to other wireless communication systems, such as NR. NR can utilize OFDM with CP on both the uplink and downlink, and includes support for half-duplex operation using TDD. Beamforming can be supported, and beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. MIMO configuration in DL can support up to 8 transmit antennas, with up to 8 streams per UE and up to 2 streams in multilayer DL transmission. Multilayer transmission with up to 2 streams per UE can be supported. Aggregation of multiple cells can be supported in the case of up to 8 serving cells.

[0049] In some examples, access to the air interface can be scheduled. A scheduling entity (e.g., a BS) allocates resources for communication between some or all devices and equipment within its service area or cell. The scheduling entity can be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, the subordinate entities utilize the resources allocated by the scheduling entity. A base station is not the only entity that can act 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 utilize the resources scheduled by the UE for wireless communication. 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 a scheduling entity, UEs can also communicate directly with each other.

[0050] exist Figure 1 In the diagram, a solid line with a double arrow indicates the desired transmission between the UE and the serving BS, which is the BS designated to serve the UE on the downlink and / or uplink. A thin dashed line with a double arrow indicates interference transmission between the UE and the BS.

[0051] Figure 2 It shows that it can be used Figure 1 The illustrated example 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 the central unit (CU) of the distributed RAN 200. The backhaul interface to the Next Generation Core Network (NG-CN) 204 may terminate at the ANC 202. The backhaul interface to the 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., cell, BS, gNB, etc.).

[0052] TRP 208 can be a distributed unit (DU). TRP 208 can be connected to a single ANC (e.g., ANC 202) or more ANCs (not shown). For example, for RAN sharing, Radio as a Service (RaaS), and service-specific deployments, TRP 208 can be connected to more than one ANC. TRP 208 can each include one or more antenna ports. TRP 208 can be configured to provide services to the UE individually (e.g., dynamically selected) or jointly (e.g., jointly transmitted).

[0053] The logical architecture of the distributed RAN 200 can support fronthauling solutions across different deployment types. For example, the logical architecture can be based on transport network capabilities (e.g., bandwidth, latency, and / or jitter).

[0054] The logical architecture of the distributed RAN 200 can share features and / or components with LTE. For example, the next-generation access node (NG-AN) 210 can support dual connectivity with NR and can share the common fronthaul of LTE and NR.

[0055] The logical architecture of distributed RAN 200 enables cooperation between TRPs 208, such as cooperation within a TRP and / or cooperation across TRPs via ANC 202. Inter-TRP interfaces can be omitted.

[0056] Logical functions can be dynamically distributed across the distributed RAN 200 logical architecture. (See reference...) Figure 5 In more detail, the Radio Resource Control (RRC) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, Medium Access Control (MAC) layer, and Physical (PHY) layer can be adapted to be located at the DU (e.g., TRP 208) or CU (e.g., ANC 202).

[0057] Figure 3 An example physical architecture of a distributed RAN 300 according to various aspects of this disclosure is shown. A centralized core network unit (C-CU) 302 can host core network functions. The C-CU 302 can be deployed centrally. C-CU 302 functions can be offloaded (e.g., offloaded to Advanced Wireless Service (AWS)) to handle peak capacity.

[0058] The Centralized RAN Unit (C-RU) 304 can host one or more ANC functions. Optionally, the C-RU 304 can host core network functions locally. The C-RU 304 can be deployed in a distributed manner. The C-RU 304 can be located close to the network edge.

[0059] The DU 306 can host one or more TRPs (Edge Node (EN), Edge Unit (EU), Radio Header Terminal (RH), Smart Radio Header Terminal (SRH), etc.). The DU can be located at the edge of a network with radio frequency (RF) capabilities.

[0060] Figure 4 The diagram shows BS 110 and UE 120 (as shown) that can be used to implement various aspects of this disclosure. Figure 1 Example components (shown). For example, antenna 452, processors 466, 458, 464 and / or controller / processor 480 of UE 120 can be used to perform the functions described herein and referenced herein. Figure 7 The various techniques and methods shown.

[0061] At BS 110, the transmitting processor 420 can receive data from the data source 412 and control information from the controller / processor 440. The control information can be used for the Physical Broadcast Channel (PBCH), Physical Control Format Indicator Channel (PCFICH), Physical Hybrid ARQ Indicator Channel (PHICH), Physical Downlink Control Channel (PDCCH), Group Common PDCCH (GC PDCCH), etc. This data can also be used for the Physical Downlink Shared Channel (PDSCH), etc. The processor 420 can process the data and control information (e.g., encoding and symbol mapping) to obtain data symbols and control symbols respectively. Processor 420 can also generate reference symbols, for example, for use with the Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), and Cell-Specific Reference Signal (CRS). Transmit (TX) Multiple-Input Multiple-Output (MIMO) processor 430 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols (if applicable), and can provide output symbol streams to modulators (MODs) 432a to 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 the output sample stream (e.g., convert to analog, amplify, filter, and up-convert) to obtain a downlink signal. The downlink signals from modulators 432a to 432t can be transmitted via antennas 434a to 434t, respectively.

[0062] At UE 120, antennas 452a to 452r can receive downlink signals from base station 110 and can provide the received signals to demodulators (DEMODs) in transceivers 454a to 454r respectively. Each demodulator 454 can adjust its respective received signal (e.g., filtering, amplification, down-conversion, and digitization) to obtain input samples. Each demodulator can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 456 can obtain received symbols from all demodulators 454a to 454r, perform MIMO detection on the received symbols (if applicable), and provide the detected symbols. Receiver processor 458 can process the detected symbols (e.g., demodulation, deinterleaving, and decoding), provide the decoded data of UE 120 to data sink 460, and provide the decoded control information to controller / processor 480.

[0063] On the uplink, at UE 120, the transmitting processor 464 can receive and process data from data source 462 (e.g., for the Physical Uplink Shared Channel (PUSCH)) and control information from controller / processor 480 (e.g., for the Physical Uplink Control Channel (PUCCH)). The transmitting processor 464 can also generate reference symbols for reference signals (e.g., Sounding Reference Signals (SRS)). Symbols from the transmitting processor 464 can be pre-coded (if applicable) by the TX MIMO processor 466, further processed by demodulators in transceivers 454a to 454r (e.g., for SC-FDM, etc.), and transmitted to base station 110. At BS 110, uplink signals from UE 120 can be received by antenna 434, processed by modulator 432, detected by MIMO detector 436 (if applicable), and further processed by receiver processor 438 to obtain decoded data and control information transmitted by UE 120. Receiver processor 438 can provide decoded data to data sink 439 and decoded control information to controller / processor 440.

[0064] Controllers / processors 440 and 480 can direct operations at BS 110 and UE 120, respectively. Processor 440 and / or other processors and modules at BS 110 can execute or direct the execution of processes described herein. Memory 442 and 482 can store data and program code for BS 110 and UE 120, respectively. Scheduler 444 can schedule data transmission by the UE on the downlink and / or uplink.

[0065] Figure 5 Figure 500 illustrates examples of implementing a communication protocol stack according to various aspects of this disclosure. The illustrated communication protocol stack can be implemented by a device operating in a wireless communication system such as a 5G system (e.g., a system supporting uplink-based mobility). Figure 500 illustrates a communication protocol stack including an RRC layer 510, a PDCP layer 515, an RLC layer 520, a MAC layer 525, and a PHY layer 530. In various examples, each layer of the protocol stack can be implemented as a separate module of software, a part of a processor or ASIC, a part of a collocated device connected via a communication link, or various combinations thereof. For example, collocated and collocated implementations can be used in the protocol stack of a network access device (e.g., an AN, CU, and / or DU) or a UE.

[0066] Option 505-a illustrates a split implementation of the protocol stack, wherein the implementation of the protocol stack is in a centralized network access device (e.g., Figure 2 ANC 202) and distributed network access devices (e.g., Figure 2 The DU (208) is split between the two. In option 505-a, the RRC layer 510 and PDCP layer 515 can be implemented by the central cell, and the RLC layer 520, MAC layer 525, and PHY layer 530 can be implemented by the DU. In various examples, the CU and DU can be co-located or non-co-located. Option 505-a may be useful in macrocell, microcell, or picocell deployments.

[0067] Option 505-b illustrates a unified implementation of the protocol stack, where the protocol stack is implemented in a single network access device. In this second option, the RRC layer 510, PDCP layer 515, RLC layer 520, MAC layer 525, and PHY layer 530 can each be implemented independently. Option 505-b may be useful, for example, in femtocell deployments.

[0068] Regardless of whether the network access device implements part or all of the protocol stack, the UE can implement the entire protocol stack as shown in 505-c (e.g., RRC layer 510, PDCP layer 515, RLC layer 520, MAC layer 525, and PHY layer 530).

[0069] 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 time slot. Depending on the subcarrier spacing, a subframe contains a variable number of time slots (e.g., 1, 2, 4, 8, 16…). NR RBs are 12 consecutive frequency subcarriers. NR can support a basic subcarrier spacing of 15kHz and can define other subcarrier spacings relative to the basic subcarrier spacing (e.g., 30kHz, 60kHz, 120kHz, 240kHz, etc.). Symbol and time slot lengths are proportional to the subcarrier spacing. The CP length also depends on the subcarrier spacing.

[0070] Figure 6 This is a diagram illustrating an example of frame format 600 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 can be divided into 10 subframes, each 1 ms in number, indexed from 0 to 9. Depending on the subcarrier spacing, each subframe can include a variable number of time slots. Depending on the subcarrier spacing, each time slot can include a variable number of symbol periods (e.g., 7 or 14 symbols). The symbol periods within each time slot can be assigned an index. A mini-time slot (which may be referred to as a sub-time slot structure) refers to a transmission time interval with a duration less than that of a time slot (e.g., 2, 3, or 4 symbols).

[0071] Each symbol in a time slot can indicate the link direction of data transmission (e.g., DL, UL, or flexible), and the link direction can be dynamically switched for each subframe. The link direction can be based on the time slot format. Each time slot can include DL / UL data and DL / UL control information.

[0072] In NR, a Synchronization Signal (SS) block is transmitted. The SS block includes the PSS, SSS, and double-symbol PBCH. The SS block can be transmitted at fixed time slot locations (such as...). Figure 6The symbols 0-3 shown are used for transmission. The UE can use PSS and SSS for cell search and acquisition. PSS provides half-frame timing, and SS provides CP length and frame timing. PSS and SSS provide cell identity. PBCH carries basic system information such as downlink system bandwidth, timing information within radio frames, SS burst set periodicity, and system frame number. 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 transmitted on the Physical Downlink Shared Channel (PDSCH) in certain subframes. For example, for mmW, SS blocks can be transmitted up to 64 times in up to 64 different beam directions. Up to 64 transmissions of an SS block are called an SS burst set. 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 locations.

[0073] In some cases, two or more dependent entities (e.g., UEs) can communicate with each other using sidelink signaling. Real-world applications of such sidelink communication can include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communication, Internet of Everything (IoE) communication, IoT communication, mission-critical mesh, and / or various other suitable applications. Typically, sidelink signaling can refer to a signal transmitted from one dependent entity (e.g., UE1) to another dependent entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., a UE or BS), even if the scheduling entity may be used for scheduling and / or control purposes. In some examples, licensed spectrum (unlike wireless LANs that typically use unlicensed spectrum) can be used to transmit sidelink signals.

[0074] The UE can operate in various radio resource configurations, including configurations associated with transmitting pilot signals using a dedicated resource set (e.g., Radio Resource Control (RRC) dedicated state, etc.) or configurations associated with transmitting pilot signals using a common resource set (e.g., RRC common state, etc.). When operating in RRC dedicated state, the UE can select a dedicated resource set to transmit pilot signals to the network. When operating in RRC common state, the UE can select a common resource set to transmit pilot signals to the network. In either case, the pilot signals transmitted by the UE can be received by one or more network access devices (such as an AN or DU or portions thereof). Each receiving network access device can be configured to receive and measure pilot signals transmitted on a common resource set, and also to receive and measure pilot signals transmitted on a dedicated resource set allocated to the UE, for which the network access device is a member of the monitoring set of the UE's network access devices. The CU to which one or more receiving network access devices or (multiple receiving network access devices) transmit pilot signal measurement results can use the measurement results to identify the UE's serving cell or initiate a change of serving cell for one or more UEs.

[0075] Example Bandwidth Part (BWP) Selection for Multimode Devices

[0076] A multi-mode device can be a UE that supports two or more communication modes. For example, a multi-mode UE can support both (or more) LTE and 5G NR. In NR, four BWPs can be used for such a multi-mode UE. One or more of the four BWPs may be preferred in terms of efficiency, reliability, and other aspects of hardware configuration. This disclosure provides various techniques for selecting one or more preferred BWPs based on RF performance degradation to avoid self-interference, avoid voltage-controlled oscillator pull, avoid thermal throttling, and enable or improve the use of multiple SIM cards or combinations thereof.

[0077] In general, examples of the disclosed techniques include receiving signaling from a network entity to configure multiple BWPs for a UE. The UE can determine a preferred BWP based on an amount of RF performance degradation associated with one or more of the multiple BWPs. For example, a preferred BWP can be determined based on at least one of detected or predicted RF performance degradation. The UE can then signal the preferred BWP to the network entity. For example, the preferred BWP can be signaled via at least one of Radio Resource Control (RRC) signaling or Media Access Control (MAC) control element (CE).

[0078] Figure 7 An example operation 700 for wireless communication for a UE according to certain aspects of this disclosure is shown. For example, operation 700 can be performed by... Figure 1 or Figure 4UE 120 is used to execute.

[0079] Operation 700 begins at 702: Signaling is received to configure multiple BWPs for the UE. At 704, the UE determines the preferred BWP from the configured BWPs based on one or more associated RF performance degradation amounts. At 706, the UE signals the preferred BWP to the network entity.

[0080] The following discusses the various types of RF performance degradation that a UE may consider when selecting a preferred BWP.

[0081] In some aspects, determining a preferred BWP may include: assessing the impact (or expected impact) of self-interference on multiple configured BWPs, and selecting a preferred BWP based on that assessment. For example, a UE may select a BWP that has less self-interference impact than one or more other BWPs as a preferred BWP. Assessing the impact of self-interference may include dynamically monitoring the receiver while transmitting on multiple configured BWPs. For example, a UE may transmit on one BWP while assessing self-interference, and repeat this process for each BWP. In some cases, in addition to the UE selecting the BWP with the least self-interference, or instead of the UE selecting the BWP with the least self-interference, the UE may request the transmitter or attacker to change the BWP to avoid RF degradation on the currently active receiver BWP. For example, the assessment of self-interference may be used to enable both the transmitter and receiver to identify the BWP that causes the least RF degradation in the active receiver and to operate under that BWP. When it is possible to select a transmit BWP (e.g., UL BWP), a receive BWP (e.g., DL BWP), or both to minimize RF degradation, the transmit BWP and receive BWP may belong to the same carrier or different carriers in carrier aggregation (CA) mode.

[0082] Generally, high-power transmissions (e.g., up to 23 dBm) leaking into the receiver band can cause self-interference or self-suppression, despite isolation between the transmitter (Tx) and receiver (Rx) paths. As die size shrinks, limitations on hardware resources can lead to self-interference and potentially present further challenges. For example, NR receivers may face inter-mode distortion (IMD) caused by two active receivers, resulting in self-interference. Because NR carriers support bandwidths up to 100 MHz and millimeter waves up to 400 MHz, some carriers may not be affected by self-interference. Identifying BWPs that are unaffected (or minimally affected) by self-interference and selecting them as preferred BWPs for the carrier is crucial.

[0083] Figure 8Example preferences for BWP based on avoiding self-interference are shown according to certain aspects of this disclosure. For example... Figure 8 As shown, there are two BWPs (BWP#0 and BWP#1) on the active carrier. The active transmitter sends transmissions that degrade the receiver or worsen its sensitivity. As a result, BWP#0 is affected by the transmission interference, while BWP#1 is not. Therefore, the UE selects BWP#1 as the preferred BWP on the active carrier.

[0084] In some aspects, different techniques can be used to determine whether self-interference is occurring. In one implementation, transmission frequencies that may cause self-interference can be measured or predetermined based on existing hardware configurations, such as the active / operating frequencies of the active transmitter and receiver, and the harmonics of those frequencies. In another implementation, the signal-to-noise ratio (SNR) can be monitored in real time to identify whether degradation or a degradation trend is occurring. SNR degradation provides a dynamic benchmark for identifying self-interference. Other types of measurements / metrics can also be used to identify self-interference, such as an increase in power adjustment due to a decrease in SNR.

[0085] In some aspects, determining the preferred BWP may include evaluating the center frequencies of multiple configured BWPs and selecting the preferred BWP based on that evaluation. For example, a BWP that will result in the elimination or reduction of VCO pull effects may be selected. VCO pull can occur when multiple phase-locked loops (PLLs) or frequency oscillators are used on the same chip and tuned to similar or identical frequencies. VCO pull can lead to phase noise degradation, in-band spurious emissions, frequency drift, and other performance degradation issues. These issues can result in receiver sensitivity degradation, increased block error rate (BLER) in UL and DL, and significant throughput degradation.

[0086] Figure 9 Example circuit diagrams related to BWP selection based on VCO traction avoidance, according to certain aspects of this disclosure, are shown. Figure 9 As shown, P1 and P2 are the coupling factors between the two oscillators of the circuit shown. Coupling is a function of the frequency difference between the two oscillators (e.g., the increments of f1 and f2). Figure 10 An example circuit diagram related to BWP selection based on avoiding VCO traction is shown, according to certain aspects of this disclosure. As shown, it can be used for… Figure 9 The coupling shown is used to control and determine the voltage.

[0087] To minimize or avoid VCO pull, the VCO or local oscillator can be tuned to the center of each BWP such that the center of the local oscillator changes frequency with the center frequency of the receiver. For example, all possible sets of local oscillator or carrier frequencies required to operate in each of the four BWPs can be identified first. Based on the active receivers, the frequency distances to other active receivers can be calculated. The maximum frequency distance between the four center frequencies of the four BWPs can be identified, and it corresponds to the minimum VCO pull. Thus, the preferred BWP is selected based on the maximum frequency distance to avoid VCO pull.

[0088] In some cases, considerations for avoiding self-interference and avoiding VCO pulling can be performed simultaneously. For example, a multi-mode UE may support non-standalone (NSA) mode and a multi-subscriber identification module (MSIM), and support load aggregation. As a result, there are active VCOs in the UE, and these VCOs can be tuned to similar frequencies. For example, the UE may use an MSIM from the same operator, or use LTE-NR in a regrouped frequency band, or use LTE-NR in a co-band E-UTRAN with New Radio Dual Connectivity (ENDC). In this case, self-interference can be estimated using a set of active Tx and Rx frequencies based on the frequency band combination. The self-interference and VCO pulling effects can then be estimated and weighted to select a preferred BWP that avoids or mitigates both negative effects. In some cases, active SNR monitoring can be implemented to evaluate or determine the preferred combination. For example, online measurement of SNR degradation can be used to select the BWP with the smallest degradation.

[0089] In some respects, determining a preferred BWP can be based at least in part on considerations of thermal constraints associated with multiple configured BWPs. In other cases, determining a preferred BWP can be based on prior information about thermal constraints of multiple BWPs configured for one or more specific UE configurations.

[0090] Due to the high operating bandwidth in NR, UEs may be concerned about battery consumption and thermal throttling. Different BWPs can use different parameters for different configurations, resulting in varying levels of power consumption and thermal metrics. For example, the configuration of the power amplifier, analog transceiver, clock and sampling rate, and other hardware can be specific to a particular BWP. When operating in one or more of the configured BWPs, the UE may experience thermal throttling (e.g., hardware limiting its own performance to avoid overheating). Therefore, the UE can evaluate the thermal performance corresponding to each of the four available BWPs and identify the preferred BWP that results in the minimum thermal throttling (and thus the minimum battery consumption rate).

[0091] Figure 11 Example operation 1100 of selecting a BWP based on thermal constraints performed by a UE according to certain aspects of this disclosure is illustrated. Operation 1100 begins at 1102: a preferred BWP is determined based on considerations of thermal constraints associated with the configured BWP. For example, thermal conditions can be measured in real time, including monitoring the temperature and rate of temperature change of the thermally sensitive components. Thermal constraints can be applied in relation to performance and stability. At 1104, a preferred BWP can be determined based on prior information regarding the thermal constraints of the configured BWP for one or more specific UE configurations. The prior information can be known thermal characteristics based on power input, rated temperature, and other parameters predetermined for calculating thermal throttling.

[0092] In some cases, the determination of thermal throttling or battery consumption rate can be based on offline reference data. That is, for a specific configuration (such as operating frequency, bandwidth, etc.) corresponding to a specific BWP, the thermal metric or contribution of the UE is known a priori. For example, offline reference data can generate lookup tables with various operating frequencies (corresponding to BWPs) and their thermal performance.

[0093] In some cases, the determination of thermal throttling can be based on onboard sensors and real-time measurements, such as running test scenarios for each of the four BWPs to evaluate the preferred BWP corresponding to the minimum thermal throttling. For example, the UE can measure the UE's power consumption rate, or one or more temperature readings of the UE's hardware components (such as power amplifiers, analog transceivers, or processors).

[0094] In some aspects, determining the preferred BWP may include considerations of the MSIM configuration. These considerations may relate to the UE's ability to support different MSIM communication modes.

[0095] For example, if a UE does not support simultaneous dual reception of multiple subscriptions, it can perform QTA / LTA to autonomously tune out of the chain used for decoding paging on the idle subband, leading to throughput degradation or loss of synchronization with network entities based on the interval duration. For instance, within the same frequency band category (such as B41 and N41), the operating frequencies for multiple MSIM subscriptions may be very similar. Specific BWPs may exist that allow the UE to operate in both LTE and NR DL operating bandwidths using the same transceiver (e.g., by increasing bandwidth to encapsulate two bandwidths). Increasing bandwidth in this way can prevent the UE from tuning out and can optimize UE performance and throughput.

[0096] In some cases, the preferred BWP is determined based on MSIM considerations regarding whether the UE supports at least one of simultaneous reception or simultaneous transmission on the MSIM. In other cases, MSIM considerations may depend on a specific combination of frequency bands. For example, the UE may be configured to select a preferred BWP that allows the UE to operate the same transceiver for different frequency bands.

[0097] In some embodiments, MSIM band combination can lead to increased bandwidth, which can be extended to NR carrier aggregation (CA) scenarios. For example, based on the appropriate BWP selection, the UE can operate in a CA with a single receiver-transmitter chain, which also optimizes power consumption and avoids thermal throttling. That is, the UE can be configured to select a preferred BWP that allows the UE to operate the same transceiver for different component carriers in CA mode.

[0098] Figure 12 An example of selecting a BWP for a UE with a Multiple Subscriber Identity Module (MSIM) is shown, according to certain aspects of this disclosure. Figure 12 As shown, two different carriers, BWP#m and BWP#n (indicated by solid lines), can be encapsulated by a larger BW (indicated by dashed lines).

[0099] In one example, a larger bandwidth (BW) can be determined by selecting BWP#m and BWP#n on the same subscription in the CA, allowing the UE to tune to the center of BWP#m and BWP#n, and opening a wider bandwidth to include both BWP#m and BWP#n. Similarly, in another example, a larger BW can be determined by selecting BWP#m and BWP#n on two different subscriptions, allowing the UE to tune to the center of BWP#m and BWP#n, and opening a wider bandwidth to include both BWP#m and BWP#n. For example, analog and digital links can be designed to support a minimum bandwidth of 100MHz in time to support Sub6. This allows for a larger BW to be implemented without changing the hardware. Thus, the UE can be configured to select a preferred BWP that allows the UE to operate the same transceiver for different frequency bands. Similarly, the UE can be configured to select a preferred BWP that allows the UE to operate the same transceiver for different component carriers under the CA.

[0100] The techniques disclosed in this paper provide various methods for selecting the optimal BWP based on the UE's operating conditions. These techniques can address and handle various issues related to self-interference, VCO pulling, thermal throttling, and MSIM. UE preferences can help the network activate the optimal BWP.

[0101] Figure 13 The illustration shows operations that may include those configured to perform the techniques disclosed herein (such as...). Figure 7 The communication device 1300 comprises various components (e.g., corresponding to component plus functional components) of the operation shown herein. The communication device 1300 includes a processing system 1302 coupled to a transceiver 1308. The transceiver 1308 is configured to transmit and receive signals, such as the various signals described herein, to the communication device 1300 via an antenna 1310. The processing system 1302 may be configured to perform processing functions for the communication device 1300, including processing signals received by the communication device 1300 and / or signals to be transmitted by the communication device 1300.

[0102] Processing system 1302 includes processor 1304 coupled to computer-readable medium / memory 1312 via bus 1306. In some aspects, computer-readable medium / memory 1312 is configured to store instructions (e.g., computer-executable code) that, when executed by processor 1304, cause processor 1304 to perform... Figure 7The operations shown or other operations used to perform the various techniques discussed in this document for the purpose of BWP handover. In some aspects, the computer-readable medium / memory 1312 stores: code 1314 for receiving signaling to configure multiple bandwidth portions (BWPs) for the UE; code 1316 for determining a preferred BWP from the multiple BWPs based on a radio frequency (RF) performance degradation amount associated with one or more of the BWPs; and code 1318 for signaling the preferred BWP to a network entity. In some aspects, the processor 1004 has circuitry configured to implement the code stored in the computer-readable medium / memory 1312. The processor 1304 includes: circuitry 1320 for receiving signaling to configure multiple bandwidth portions (BWPs) for the UE; circuitry 1322 for determining a preferred BWP from the multiple BWPs based on a radio frequency (RF) performance degradation amount associated with one or more of the BWPs; and circuitry 1324 for signaling the preferred BWP to a network entity.

[0103] The methods disclosed herein include one or more steps or actions for implementing the methods. The method steps and / or actions may be interchanged without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of a particular step and / or action may be modified without departing from the scope of the claims.

[0104] As used herein, the phrase “at least one of a series of items” refers to any combination of those items, including a single member. As an example, “at least one of a, b, or c” is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0105] As used herein, the term "determine" encompasses a wide variety of actions. For example, "determine" can include calculation, operation, processing, derivation, investigation, searching (e.g., looking in a table, database, or other data structure), ascertaining, etc. Furthermore, "determine" can include receiving (e.g., receiving information), accessing (e.g., accessing data in memory), etc. Additionally, "determine" can include parsing, selecting, picking, building, etc.

[0106] The foregoing description is provided to enable those skilled in the art to practice the various aspects described herein. Various modifications to these aspects will readily be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be consistent with the full scope of the language of the claims, wherein, unless specifically stated otherwise, references to elements in the singular form are not intended to mean “one and only one,” but rather “one or more.” Unless specifically stated otherwise, the term “some” means one or more. All structural and functional equivalents of elements known to or to be known hereafter by those skilled in the art throughout the various aspects described herein are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended to be offered to the public, whether or not such disclosure is explicitly stated in the claims. No claim element shall be interpreted in accordance with 35 U.SC 112(f) unless the element is explicitly stated using the phrase “for a component of” or, in the case of a method claim, using the phrase “for a step of”.

[0107] The various operations described above can be performed by any suitable component capable of performing the corresponding function. Components may include (multiple) various hardware and / or software components and / or modules, including but not limited to circuits, application-specific integrated circuits (ASICs), or processors. Typically, in cases where operations are illustrated in the figure, those operations may have corresponding equivalent components with similar numbering, plus functional components.

[0108] The various illustrative logic blocks, modules, and circuits described in this disclosure may be implemented or performed using 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 designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but alternatively, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration.

[0109] If implemented in hardware, an example hardware configuration could include a processing system in a wireless node. This processing system could be implemented using a bus architecture. Depending on the specific application and overall design constraints of the processing system, the bus could include any number of interconnect buses and bridges. The bus can link various circuits together, including processors, machine-readable media, and bus interfaces. The bus interface can be used to connect network adapters, etc., to the processing system via the bus. The network adapter can be used to implement signal processing functions at the PHY layer. In user terminal 120 (see...) Figure 1 In this case, a user interface (e.g., keyboard, display, mouse, joystick, etc.) can also be connected to the bus. The bus can also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be described further. The processor can be implemented using one or more general-purpose and / or special-purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits capable of executing software. Depending on the specific application and the overall design constraints imposed on the overall system, those skilled in the art will recognize how best to implement the described functions for processing the system.

[0110] If implemented in software, functionality can be stored or transmitted on a computer-readable medium as one or more instructions or code. Software should be interpreted broadly as representing instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or others. Computer-readable media includes computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one place to another. The processor may be responsible for managing the bus and general processing, including executing software modules stored on the machine-readable storage medium. The computer-readable storage medium may be coupled to the processor, allowing the processor to read information from and write information to the storage medium. Alternatively, the storage medium may be integrated into the processor. For example, machine-readable media may include transmission lines, carrier waves modulated by data, and / or separate computer-readable storage media containing instructions stored thereon, all accessible to the processor via a bus interface. Alternatively or additionally, the machine-readable medium or any portion thereof may be integrated into the processor, as in the case of caches and / or general-purpose register files. Examples of machine-readable storage media 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, disks, optical disks, hard disks, or any other suitable storage media, or any combination thereof. Machine-readable media can be embodied in computer program products.

[0111] Software modules can comprise a single instruction or a number of instructions, and can be distributed across several different code segments, between different programs, and across multiple storage media. Computer-readable media can include multiple software modules. Software modules include instructions that, when executed by a device such as a processor, cause the processing system to perform various functions. Software modules can include send and receive modules. Each software module can reside in a single storage device or be distributed across multiple storage devices. For example, when a triggering event occurs, a software module can be loaded from a hard disk into RAM. During the execution of a software module, the processor can load some instructions into a cache to improve access speed. Then, one or more cache lines can be loaded into a general-purpose register file for the processor to execute. As will be understood when the functionality of a software module is mentioned below, this functionality is implemented by the processor when executing instructions from that software module.

[0112] Furthermore, any connection is properly referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies (such as infrared, radio, and microwave), then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies (such as infrared, radio, and microwave) are included in the definition of medium. The disks and optical discs used herein include Compact Discs (CDs), LaserDiscs, Optical Discs, Digital Versatile Discs (DVDs), floppy disks, and Blu-ray Discs, wherein disks typically reproduce data magnetically, while optical discs reproduce data optically using lasers. Therefore, in some aspects, a computer-readable medium may include non-transitory computer-readable media (e.g., tangible media). Furthermore, in other aspects, a computer-readable medium may include transient computer-readable media (e.g., signals). Combinations of the above should also be included within the scope of computer-readable media.

[0113] Therefore, certain aspects may include a computer program product for performing the operations described herein. For example, such a computer program product may include a computer-readable medium having instructions stored thereon (and / or encoded thereon) that can be executed by one or more processors to perform the operations described herein. Figure 7 The instructions for the operation are shown in the figure.

[0114] Furthermore, it should be understood that modules and / or other suitable components for performing the methods and techniques described herein can be downloaded and / or otherwise obtained by applicable user terminals and / or base stations. For example, such a device can be coupled to a server to facilitate the transfer of components for performing the methods described herein. Alternatively, the various methods described herein can be provided via storage components (e.g., RAM, ROM, physical storage media such as optical discs (CDs) or floppy disks), such that the user terminal and / or base station can obtain the various methods when the storage components are coupled to or provided to the device. Furthermore, any other suitable techniques for providing the methods and techniques described herein to the device can be utilized.

[0115] It should be understood that the claims are not limited to the precise configuration and components described above. Various modifications, alterations, 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 claims.

Claims

1. An apparatus for wireless communication, comprising: At least one memory, including instructions; and At least one processor is configured to execute the instructions to cause the device to: Receive signaling to configure multiple bandwidth portions (BWPs) for the device; A preferred BWP is determined from the plurality of BWPs based on a predicted RF performance degradation associated with one or more of the configured BWPs, wherein, in order to determine the preferred BWP based on the predicted RF performance degradation, the at least one processor is configured to cause the device to: Evaluate the center frequencies of multiple BWPs in the configuration; and The preferred BWP is determined by selecting the VCO frequency that leads to the elimination or reduction of the VCO traction effect of the voltage-controlled oscillator based on the aforementioned evaluation; and Signal the preferred BWP to the network entity.

2. The apparatus according to claim 1, wherein, The preferred BWP is notified by signaling via at least one of Radio Resource Control (RRC) signaling or Media Access Control (MAC) control element (CE).

3. The apparatus according to claim 1, wherein, The at least one processor is further configured to cause the device to: Assess the impact of self-interference on multiple BWPs in the aforementioned configuration; and The preferred BWP is selected based on the evaluation.

4. The apparatus according to claim 3, wherein, The preferred BWP is selected as the one that has less self-interference effect than one or more other BWPs.

5. The apparatus according to claim 3, wherein, The evaluation includes dynamically monitoring the receiver while transmitting over multiple BWPs in the configuration.

6. The apparatus according to claim 3, wherein, The at least one processor is also configured to enable the device to determine the preferred BWP by changing the transmit BWP to reduce RF degradation on the current receive BWP.

7. The apparatus according to claim 1, wherein, The selection of the preferred BWP is based at least in part on considerations of the thermal constraints associated with the plurality of BWPs in the configuration.

8. The apparatus according to claim 7, wherein, The preferred BWP is determined based on prior information about the thermal constraints of multiple BWPs for the configuration of one or more specific devices.

9. The apparatus according to claim 1, further comprising: Multi-Subscriber Identification Module (SIM); and The at least one processor is further configured to cause the device to determine the preferred BWP based at least in part on one or more MSIM considerations.

10. The apparatus according to claim 9, wherein, The one or more MSIMs are considered in relation to the device's ability to support different MSIM communication modes.

11. The apparatus according to claim 10, wherein, The one or more MSIMs are considered to include whether the device supports at least one of simultaneous reception or simultaneous transmission on multiple SIMs.

12. The apparatus according to claim 10, wherein, The one or more MSIMs are considered to depend on a specific combination of frequency bands.

13. The apparatus according to claim 12, wherein, The at least one processor is configured to enable the device to select a preferred BWP that allows the device to operate the same transceiver for different frequency bands.

14. The apparatus according to claim 12, wherein, The at least one processor is configured to enable the device to select a preferred BWP that allows the device to operate the same transceiver for different component carriers in carrier aggregation (CA) mode.

15. A method for wireless communication by a user equipment (UE), comprising: Receive signaling to configure multiple bandwidth portion (BWP) for the UE; Determining a preferred BWP from the plurality of BWPs based on a predicted RF performance degradation associated with one or more of the configured BWPs, wherein determining the preferred BWP based on the predicted RF performance degradation includes: Evaluate the center frequencies of multiple BWPs in the configuration; and The preferred BWP is determined by selecting the VCO frequency that leads to the elimination or reduction of the VCO traction effect of the voltage-controlled oscillator based on the aforementioned evaluation; and Signal the preferred BWP to the network entity.

16. The method according to claim 15, wherein, The preferred BWP is notified by signaling via at least one of Radio Resource Control (RRC) signaling or Media Access Control (MAC) control element (CE).

17. The method according to claim 15, wherein, Determining the preferred BWP further includes: Assess the impact of self-interference on multiple BWPs in the aforementioned configuration; and The preferred BWP is selected based on the evaluation.

18. The method according to claim 17, wherein, The preferred BWP is selected as the one that has less self-interference effect than one or more other BWPs.

19. The method of claim 17, wherein, The evaluation includes dynamically monitoring the receiver while transmitting over multiple BWPs in the configuration.

20. The method of claim 17, wherein, Determining the preferred BWP includes changing the transmitting BWP to reduce RF degradation on the current receiving BWP.

21. The method according to claim 15, wherein, The preferred BWP is determined at least in part based on consideration of thermal constraints associated with a plurality of BWPs of the configuration, wherein the determination of the preferred BWP is based on prior information regarding the thermal constraints of the plurality of BWPs of the configuration for one or more specific UE configurations.

22. The method of claim 15, wherein: The UE supports multiple subscriber identification modules (SIMs), and The preferred BWP is determined at least in part based on one or more MSIM considerations, wherein the one or more MSIM considerations are related to the UE’s ability to support different MSIM communication modes.

23. The method according to claim 22, wherein, The one or more MSIMs considered include whether the UE supports at least one of simultaneous reception or simultaneous transmission on multiple SIMs.

24. A device for wireless communication, comprising: Components for receiving signaling that configures multiple bandwidth portions (BWPs) for the device; The component for determining a preferred BWP from a plurality of BWPs based on a predicted RF performance degradation associated with one or more of the configured BWPs, wherein the component for determining the preferred BWP from the plurality of BWPs based on the predicted RF performance degradation includes: Components for evaluating the center frequencies of the multiple BWPs in the configuration; and Components for determining the preferred BWP by selecting the VCO frequency that leads to the elimination or reduction of the VCO traction effect of the voltage-controlled oscillator based on the evaluation; and Components used to signal the preferred BWP to network entities.

25. A computer-readable medium having instructions stored thereon, the instructions being used to: Receive signaling to configure multiple bandwidth portion (BWP) configurations for the user equipment (UE); A preferred BWP is determined from the plurality of BWPs based on a predicted RF performance degradation associated with one or more of the configured BWPs, wherein, Determining the preferred BWP based on the predicted RF performance degradation includes: Evaluate the center frequencies of multiple BWPs in the configuration; and The preferred BWP is determined by selecting the VCO frequency that leads to the elimination or reduction of the VCO traction effect of the voltage-controlled oscillator based on the aforementioned evaluation; and Signal the preferred BWP to the network entity.

26. A computer program product comprising computer-readable instructions, which, when executed by a processor, cause the processor to perform the method according to any one of claims 15-23.

Images