NR cell prioritization based on carrier bandwidth

Abstract

Disclosed herein are system, method, and computer program product embodiments for NR cell prioritization based on carrier bandwidth. Embodiments operate by storing a plurality of neighboring cell frequencies and respective carrier bandwidths for the plurality of neighboring cell frequencies. The embodiment determines whether a carrier bandwidth corresponding to a neighboring cell frequency of the plurality of neighboring cell frequencies is less than a serving cell carrier bandwidth. In response to determining that the carrier bandwidth corresponding to the neighbor cell frequency is less than the serving cell carrier bandwidth, the embodiment determines an offset signal strength measurement by adding an offset to the signal strength measurement corresponding to the neighbor cell frequency, where the offset is determined based at least in part on a data throughput requirement of the UE. The embodiment evaluates a signal strength criterion for the neighboring cell frequency using the bias signal strength measurement corresponding to the neighboring cell frequency.

Description

[0001] Cross-references

[0002] This application claims priority to U.S. non-provisional application No. 18 / 369,959, filed on September 19, 2023, entitled “NR CELL PRIORITIZATION BASED ON CARRIER BANDWIDTH,” which claims the benefit of U.S. provisional application No. 63 / 409,566, filed on September 23, 2022, entitled “NR CELL PRIORITIZATION BASED ON CARRIER BANDWIDTH,” and the contents of these two applications are incorporated herein by reference in their entirety. Background Art Technical Field

[0003] The described aspects generally relate to mechanisms for user equipment (UE) mobility procedures in a wireless communication system.

[0004] Related fields

[0005] 5G New Radio (NR) supports a wide range of use cases and applications running on various bandwidths. In addition, a variety of UEs with different throughput capabilities support 5G. UEs primarily use signal strength measurements of serving cells and neighboring cells to perform mobility procedures such as cell selection, reselection, and handover. Summary of the invention

[0006] Some aspects of the present disclosure relate to apparatus and methods for NR cell prioritization based on carrier bandwidth. For example, some aspects of the present disclosure relate to apparatus and methods for performing cell selection, reselection, and switching using a list of NR frequencies and bandwidths stored in a stored list database.

[0007] Some aspects of the present disclosure relate to an apparatus having a memory and a processor coupled to the memory. The processor is configured to store a plurality of neighboring cell frequencies and corresponding carrier bandwidths of the plurality of neighboring cell frequencies. The processor is also configured to determine whether the carrier bandwidth corresponding to the neighboring cell frequency among the plurality of neighboring cell frequencies is less than the serving cell carrier bandwidth. In response to determining that the carrier bandwidth corresponding to the neighboring cell frequency is less than the serving cell carrier bandwidth, the processor is also configured to: determine a biased signal strength measurement by adding an offset to a signal strength measurement corresponding to the neighboring cell frequency, wherein the offset is determined at least in part based on a data throughput requirement of a UE; and use the biased signal strength measurement corresponding to the neighboring cell frequency to evaluate a signal strength standard of the neighboring cell frequency.

[0008] According to some aspects, in response to determining that the carrier bandwidth corresponding to the second neighbor cell frequency is greater than the serving cell carrier bandwidth, the processor may be further configured to determine a second biased signal strength measurement by adding a second offset to the signal strength measurement corresponding to the second neighbor cell frequency, wherein the second offset is determined at least in part based on the data throughput requirement of the UE. The processor is also configured to use the second biased signal strength measurement corresponding to the second neighbor cell frequency to evaluate the signal strength criterion of the second neighbor cell frequency.

[0009] According to some aspects, when the UE has low data throughput requirements and the carrier bandwidth corresponding to the neighboring cell frequency is less than the serving cell carrier bandwidth, the offset is configured as a positive value. According to some aspects, when the UE has high data throughput requirements and the carrier bandwidth corresponding to the neighboring cell frequency is less than the serving cell carrier bandwidth, the offset is configured as a negative value.

[0010] According to some aspects, when the UE has low data throughput requirements and the carrier bandwidth corresponding to the neighboring cell frequency is greater than the serving cell carrier bandwidth, the offset is configured as a negative value. According to some aspects, when the UE has high data throughput requirements and the carrier bandwidth corresponding to the neighboring cell frequency is greater than the serving cell carrier bandwidth, the offset is configured as a positive value.

[0011] According to some aspects, the signal strength criterion is a cell reselection criterion for the neighboring cell frequency. According to some aspects, the signal strength criterion is an A3, A4, or A5 criterion. According to some aspects, the offset is determined based at least in part on a difference between the carrier bandwidth corresponding to the neighboring cell and the serving cell carrier bandwidth.

[0012] The present invention is provided for the purpose of illustrating some aspects only, so as to provide an understanding of the subject matter described herein. Therefore, the above-mentioned features are only examples and should not be understood as narrowing the scope or essence of the subject matter in the present disclosure. Other features, aspects and advantages of the present disclosure will become apparent from the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and enable those skilled in the relevant art to make and use the present disclosure.

[0014] Figure 1 An example wireless system that implements prioritized NR cell prioritization based on carrier bandwidth in accordance with some aspects of the present disclosure is illustrated.

[0015] Figure 2 A block diagram illustrating an example system of an electronic device implementing carrier bandwidth-based NR cell prioritization in accordance with some aspects of the present disclosure is provided.

[0016] Figure 3 Example operations performed by a UE to implement prioritized cell search based on carrier bandwidth according to some aspects of the present disclosure are illustrated.

[0017] Figure 4 Example operations performed by a UE to implement prioritized cell reselection based on carrier bandwidth according to some aspects of the present disclosure are illustrated.

[0018] Figure 5 Example operations performed by a UE to implement prioritized handover based on carrier bandwidth according to some aspects of the present disclosure are illustrated.

[0019] Figure 6 An example method performed by a UE to implement prioritized NR cell prioritization based on carrier bandwidth according to some aspects of the present disclosure is illustrated.

[0020] Figure 7 is an example computer system for implementing some aspects or portions thereof.

[0021] The present disclosure is described with reference to the accompanying drawings. In the drawings, generally, like reference numerals indicate identical or functionally similar elements. Additionally, generally, the leftmost digit of a reference numeral identifies the drawing in which the reference numeral first appears. DETAILED DESCRIPTION

[0022] Use case scenarios for 5G NR include enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine type communications (mMTC). These use cases cover a wide range of applications with highly varying requirements. As a result, a variety of UEs with different throughput capabilities support 5G. To accommodate the resulting variety of spectrum scenarios, 5G NR supports channel bandwidths from 5MHz to 200MHz for frequency range 1 (FR1) and up to 400MHz for frequency range 2 (FR2). In addition, narrowband Internet of Things (NB-IoT) implementations that support mMTC services use narrowband carriers (e.g., 180kHz).

[0023] When a UE resides on a cell with a carrier bandwidth that is smaller than the bandwidth supported by the UE, the UE cannot operate at its full throughput capacity. Therefore, the UE may have to switch to a cell with a higher bandwidth. In addition, when a UE with smaller throughput requirements (e.g., an IoT device) resides on a cell with a larger carrier bandwidth, the power performance or battery life of the UE may be adversely affected.

[0024] In order to solve the above technical problems, the embodiments of this document provide a cell search, reselection and switching process taking into account the carrier bandwidth of the available cells and the throughput requirements of the UE. Some aspects of the present disclosure relate to an apparatus and method for implementing a mechanism for NR cell prioritization based on carrier bandwidth. For example, some aspects of the present disclosure relate to an apparatus and method for implementing a stored information cell search based on carrier bandwidth. Additionally, some aspects of the present disclosure relate to an apparatus and method for implementing cell reselection and switching based on carrier bandwidth.

[0025] Figure 1 An example wireless system 100 is illustrated that implements prioritized NR cell prioritization based on carrier bandwidth according to some aspects of the present disclosure. The example wireless system 100 is provided for illustration purposes only and is not limiting of the disclosed aspects. The wireless system 100 may include, but is not limited to, a base station 104, a base station 106, a base station 108, and a user equipment (UE) 102.

[0026] According to some aspects, base station 104, base station 106, and base station 108 may be fixed stations or mobile stations. Base station 104, base station 106, and base station 108 may be referred to as cellular IoT base stations, evolved Node Bs (eNBs), next generation Node Bs (gNBs), 5G Node Bs (NBs), or some other equivalent terminology. In some examples, base station 104, base station 106, and base station 108 may be interconnected to each other and / or to other base stations or network nodes in the network via various types of backhaul interfaces (such as direct physical connections, virtual networks, etc.) (not shown).

[0027] According to some aspects, UE 102 can be configured to operate based on a wide variety of wireless communication technologies. These technologies may include, but are not limited to, technologies based on the third generation partnership project (3GPP) standard. UE 102 can be stationary or mobile. UE 102 can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop, a desktop computer, a cordless phone, a wireless local loop station, a wireless sensor, a tablet computer, a camera, a video surveillance camera, a gaming device, a netbook, an ultrabook, a medical device or equipment, a biometric sensor or device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry such as a smart ring or smart bracelet), an entertainment device (e.g., music or video equipment, or a satellite radio), a vehicle component, a smart meter, an industrial manufacturing equipment, a global positioning system device, an Internet of Things (IoT) device, a machine type communication (MTC) device, an evolution or enhancement of a machine type communication (eMTC) device, or any other suitable device configured to communicate via a wireless medium. For example, MTC and eMTC devices may include robots, drones, location tags, etc.

[0028] According to some aspects, UE 102 can be capable of communicating with one or more base stations of wireless system 100. According to some aspects, wireless system 100 can utilize one or more radio access technologies (RATs) and can have overlapping coverage from one or more RATs.

[0029] According to some aspects, base stations 104, 106, and 108 are NR base stations. The NR radio access network (RAN) includes NR base stations and a new radio core network (CN). The NR base stations can be next-generation node Bs (gNode Bs). UE 102 can access external networks via NR base stations and NR CNs.

[0030] According to some aspects, base station 104, base station 106, and base station 108 may have overlapping coverage areas. A base station may provide one or more cells. For example, a first base station may provide a serving cell to UE 102, and a second base station may provide a neighboring cell. According to some aspects, a single base station may provide both a serving cell and one or more neighboring cells. According to some aspects, base station 104, base station 110, base station 106, and base station 108 may be managed by the same public land mobile network (PLMN).

[0031] According to some aspects, base stations 104, 106, and 108 periodically broadcast a series of system information at regular intervals. Base stations 104, 106, and 108 may broadcast system information in system information blocks (SIBs) (e.g., system information block 1 (SIB 1), SIB 2, SIB 4). The SIBs broadcast by the base stations include information about the serving cell frequency and inter-frequency neighboring cells related to cell reselection. The SIBs also include cell reselection parameters common to the frequency and cell-specific reselection parameters. SIB 1 includes information corresponding to the carrier bandwidth of the broadcasting base station.

[0032] According to some aspects, the UE 102 stores the system information it receives from the NR base station it camps on in a stored list database 256. The stored list database includes a list of carrier frequencies that the UE previously camped on and carrier bandwidth information corresponding to each carrier frequency in the list. The stored list database also includes information about cell selection, reselection, and handover parameters from previously received measurement control information elements. According to some aspects, the UE 102 may store its stored list database 256 in a local memory (e.g., in a local memory of the UE 102). Figure 2 According to some aspects, the storage list database of UE 102 can be stored at a remote location (e.g., a remote server).

[0033] According to some aspects, UE 102 performs signal strength measurements of serving cells and neighboring cells to perform mobility procedures such as cell selection, reselection, and handover. UE 102 performs signal strength measurements of cells in one or more NR frequencies to find cells whose signal strength meets certain criteria. Cell selection, reselection, and handover criteria may be evaluated based on one or more signal strength metrics or signal quality metrics obtained by UE 102. According to some aspects, signal strength metrics include received signal strength indication (RSSI), received signal code power (RSCP), and reference signal received power (RSRP). According to some aspects, signal quality metrics include signal to interference plus noise ratio (SINR) and reference signal received quality (RSCP).

[0034] Figure 2A block diagram of an example system 200 of an electronic device implementing carrier bandwidth-based NR cell prioritization according to some aspects of the present disclosure is illustrated. System 200 may be any of base stations 101 or 107 and / or UE 103 of system 100. System 200 includes a processor 210, one or more transceivers 220a to 220n, a communication infrastructure 240, a memory 250, an operating system 252, an application 254, and an antenna 260. The illustrated system is provided as an exemplary portion of system 200, and system 200 may include other circuits and subsystems. In addition, although the system of system 200 is illustrated as separate components, aspects of the present disclosure may include any combination of these components, fewer components, or more components.

[0035] The memory 250 may include random access memory (RAM) and / or cache, and may include control logic (e.g., computer software) and / or data. The memory 250 may include other storage devices or memories, such as, but not limited to, a hard drive and / or a removable storage device / unit. According to some examples, an operating system 252 may be stored in the memory 250. The operating system 252 may manage data transfer from the memory 250 and / or one or more applications 254 to the processor 210 and / or one or more transceivers 220a to 220n. In some examples, the operating system 252 maintains one or more network protocol stacks (e.g., an Internet protocol stack, a cellular protocol stack, etc.) that may include multiple logical layers. At the corresponding layer of the protocol stack, the operating system 252 includes a control mechanism and a data structure to perform functions associated with the layer. The memory 250 may include a storage list database 256. According to some aspects, the storage list database 256 facilitates storage of a list of carrier frequencies previously resident by the UE and corresponding carrier bandwidth information for performing carrier bandwidth-based NR cell prioritization, as described herein.

[0036] According to some examples, applications 254 may be stored in memory 250. Applications 254 may include applications (e.g., user applications) used by wireless system 200 and / or a user of wireless system 200. Applications in applications 254 may include applications such as, but not limited to, radio streaming, video streaming, remote control, and / or other user applications.

[0037] The system 200 may also include a communication infrastructure 240. The communication infrastructure 240 provides, for example, communication between the processor 210, one or more transceivers 220a to 220n, and the memory 250. In some implementations, the communication infrastructure 240 may be a bus. The processor 210, together with computer instructions stored in the memory 250, executes to enable the system 200 of the system 100 to implement the operation of NR cell prioritization based on carrier bandwidth according to some aspects of the present disclosure, as described herein. Alternatively, the processor 210 may be "hard coded" to implement NR cell prioritization based on carrier bandwidth, as described herein.

[0038] According to some aspects, one or more transceivers 220a-220n send and receive communication signals that support putting UE 102 into service on the NR cell based on the carrier bandwidth, and may be coupled to antenna 260. Antenna 260 may include one or more antennas that may be the same or different types. One or more transceivers 220a to 220n allow the system 200 to communicate with other devices that may be wired and / or wireless. In some examples, one or more transceivers 220a-220n may include processors, controllers, radio components, sockets, plugs, amplifiers, filters, buffers, and similar circuits / devices for connecting to a network and communicating on the network. According to some examples, one or more transceivers 220a to 220n may include one or more circuits for connecting to a wired network and / or a wireless network and communicating thereon.

[0039] According to some aspects, one or more transceivers 220a-220n may include a cellular subsystem, a WLAN subsystem, and / or a Bluetooth subsystem. TM Subsystems, each of which includes its own radio transceiver and protocol, as will be understood by those skilled in the art based on the discussion provided herein. In some implementations, one or more of the transceivers 220a to 220n may include more or fewer systems for communicating with other devices.

[0040] In some examples, one or more transceivers 220a to 220n may include one or more circuits (including a WLAN transceiver) for enabling connection and communication via a WLAN network (such as, but not limited to, a network based on the standards described in IEEE 802.11). Additionally or alternatively, one or more transceivers 220a to 220n may include one or more circuits (including a WLAN transceiver) for enabling connection and communication via a WLAN network (such as, but not limited to, a network based on the standards described in IEEE 802.11). TM Protocol, Bluetooth TM Low Energy Protocol or Bluetooth TM One or more circuits for connection and communication with low-power long-range protocols (including Bluetooth TM For example, the transceiver 220n may include a Bluetooth TM Transceiver.

[0041] Additionally, one or more transceivers 220a to 220n may include one or more circuits (including cellular transceivers) for connecting to and communicating on a cellular network such as 5G NR, etc. For example, one or more transceivers 220a-220n may be configured to operate in accordance with one or more of Rel-15, Rel-16, Rel-17, or other versions of the 3GPP standard.

[0042] According to some aspects, the processor 210, alone or in combination with computer instructions stored in the memory 250 and / or one or more transceivers 220a-220n, implements a cell selection procedure after detecting no service to enable the UE to acquire service using a priority RAT, as discussed herein. Alternatively, the processor 210 may be "hard coded" to implement NR cell prioritization based on carrier bandwidth, as described herein.

[0043] Figure 3 1 illustrates exemplary operations performed by UE 102 to implement prioritized cell search based on carrier bandwidth according to some aspects of the present disclosure. Method 300 may be performed by UE 102, such as Figure 1 and Figure 2 For example, the functions of the method 300 may be performed by the processor 210 or caused to be performed by the processor 210 of the UE 102 .

[0044] At 302, UE 102 obtains a stored list of carrier frequencies and corresponding bandwidth information corresponding to the selected PLMN from its stored list database. According to some aspects, the stored list database includes a list of carrier frequencies that the UE previously camped on and carrier bandwidth information corresponding to each carrier frequency in the list. The stored list database also includes information about cell selection parameters from a previously received measurement control information element.

[0045] According to some aspects, once the UE 102 is powered on, the UE performs a public land mobile network (PLMN) selection process. After selecting a PLMN, the UE 102 implements a stored information cell selection to find a suitable cell in the selected PLMN to camp on. During the stored information cell selection process, the UE 102 performs a search of a stored list of carrier frequencies corresponding to the selected PLMN from a stored list database.

[0046] At 304, it is determined whether UE 102 has a high throughput requirement or a low throughput requirement. According to some aspects, the throughput requirement of the UE is determined based on a downlink or uplink category of the UE.

[0047] Additionally, each carrier frequency in the stored frequency list is classified as a high bandwidth carrier or a low bandwidth carrier based on its bandwidth at 304. According to some aspects, each carrier frequency is classified relative to a maximum bandwidth that can be supported by UE 102 when using the carrier frequency. According to some aspects, each carrier frequency is classified as a high bandwidth carrier or a low bandwidth carrier relative to a bandwidth threshold, wherein the bandwidth threshold is based on a category of UE 102.

[0048] At 306, based on determining that UE 102 has a high throughput requirement, UE 102 performs a prioritized cell search for carrier frequencies classified as high bandwidth carriers from a stored list database. According to some aspects, for the prioritized cell search, the frequency list in the stored list database is sorted based on the corresponding bandwidth of the frequency. According to some aspects, the order in which the carrier frequencies are searched is based on whether UE 102 has a high throughput requirement or a low throughput requirement. When UE 102 has a high throughput requirement, the frequency list is searched in descending order of the corresponding bandwidth of the frequency. In other words, in descending order, the highest frequency is searched first and the lowest frequency is searched last. Alternatively, when UE 102 has a low throughput requirement, the frequency list is searched in ascending order of the frequency bandwidth, so the lowest frequency is searched first and the highest frequency is searched last in ascending order.

[0049] According to some aspects, UE 102 uses a stored list database (e.g., 256 in memory 250) to perform a stored information cell search to find a suitable cell with a high bandwidth carrier. According to some aspects, the suitable cell is not part of a tracking area that is in a list of tracking areas prohibited from roaming and does not have a prohibited state. The suitable cell also meets the cell selection criteria (e.g., the S criteria specified in 3GPP TS 38.304). According to some aspects, the high bandwidth carrier frequency meets the cell selection criteria when the following conditions are met: Srxlev>0 and Squal>0, where Srxlev is a signal reception level value, and Squal is a signal quality value corresponding to the measured carrier frequency. According to some aspects, Srxlev is determined based on the measured frequency reception level value and the minimum required reception level in the cell. Once the UE with high throughput requirements finds a suitable cell with a high bandwidth carrier, the UE selects the cell and resides on the cell.

[0050] According to some aspects, when UE 102 has high throughput requirements and does not find a suitable cell on any high bandwidth carrier in the frequency list, UE 102 may attempt to find a suitable cell by searching on a low bandwidth carrier in the stored frequency list. When UE 102 has high throughput requirements and performs a cell search on a low bandwidth carrier, the frequency list may be searched in descending order of carrier bandwidth.

[0051] At 308, based on determining that UE 102 has low throughput requirements, UE 102 performs a prioritized cell search on carrier frequencies classified as low bandwidth carriers from the stored list database. When UE 102 has low throughput requirements, the list of frequencies in the stored list database is searched in ascending order of bandwidth of the frequencies.

[0052] According to some aspects, UE 102 performs a stored information cell search using a stored list database to find a suitable cell with a low bandwidth carrier. According to some aspects, a low bandwidth carrier frequency satisfies the cell selection criteria when the following conditions are met: Srxlev>0 and Squal>0, where Srxlev is a signal reception level value, and Squal is a signal quality value corresponding to the measured carrier frequency. Once a UE with low throughput requirements finds a suitable cell with a low bandwidth carrier, the UE selects the cell and camps on the cell.

[0053] According to some aspects, when UE 102 has low throughput requirements and does not find a suitable cell on any low bandwidth carrier in the frequency list, UE 102 may attempt to find a suitable cell by searching on a high bandwidth carrier in the stored frequency list. When UE 102 has low throughput requirements and performs a cell search on a high bandwidth carrier, the frequency list may be sorted in ascending order of bandwidth.

[0054] Figure 4 4 illustrates exemplary operations performed by UE 102 to implement prioritized cell reselection based on carrier bandwidth according to some aspects of the present disclosure. Method 400 may be performed by UE 102, such as Figure 1 and Figure 2 For example, the functions of the method 400 may be performed by the processor 210 or caused to be performed by the processor 210 of the UE 102.

[0055] At 402, UE 102 camps on a cell of an NR base station (e.g., base station 104, 106, or 108) in a radio resource control (RRC) idle state and receives a system information block (SIB) broadcast. For example, SIB 4 received by UE 102 from the camped base station includes information about NR frequencies and inter-frequency neighboring cells related to cell reselection, including cell reselection parameters common to the frequency and cell-specific reselection parameters. SIB 2 received by UE 102 from the base station includes cell reselection information related to the serving cell.

[0056] At 404, UE 102 obtains the carrier bandwidth value corresponding to the neighboring frequency of the camped cell from its stored list database 256. According to some aspects, stored list database 256 includes a list of carrier frequencies that the UE previously camped on and carrier bandwidth information corresponding to each carrier frequency in the list. Stored list database 256 also includes information about cell reselection parameters from previously received measurement control information elements.

[0057] At 406, for each neighbor cell frequency from the stored list database 256, the UE 102 determines whether one or more criteria for initiating measurements for cell reselection have been met. According to some aspects, the determination to initiate neighbor cell measurements is made based on the strength and / or quality of the signal received from the serving cell. For example, the UE 102 may skip neighbor cell measurements when the serving cell meets the following two conditions: Srxlev>Srxlev InteraSearchP and Squal>S IntraSearchQ , where the parameter S InteraSearchP and S IntraSearchQ Specified in SIB2. However, when either condition is not met, UE 102 initiates intra-frequency neighbor cell measurements. According to some aspects, UE 102 always performs measurements for reselection towards higher reselection priority inter-frequency neighbors.

[0058] At 408, based on determining that one or more criteria for initiating measurements for cell reselection have been met (eg, the condition Srxlev>Srxlev is not met), InteraSearchP and / or Squal>S IntraSearchQ ), UE 102 performs measurement on the neighboring cell frequencies. UE 102 measures the signal reception level value Srxlev and the signal quality value Squal corresponding to each neighboring cell frequency from the storage list database.

[0059] At 410, based on determining that the criteria for initiating measurements for cell reselection have not been met, the UE 102 compares the carrier bandwidth of the neighboring cell frequency to the current cell carrier bandwidth. At 410, the UE 102 determines whether bandwidth-based cell reselection can be triggered. According to some aspects, when the UE 102 has high throughput requirements and the neighboring cell frequency has a carrier bandwidth that is larger than the serving cell carrier bandwidth, the UE 102 triggers measurements on the neighboring cell frequency. Alternatively, when the UE 102 has low throughput requirements and the neighboring cell frequency has a carrier bandwidth that is lower than the serving cell carrier bandwidth but has sufficient bandwidth to support the throughput requirements of the UE 102, the UE 102 triggers measurements on the neighboring cell frequency.

[0060] At 412, based on the throughput requirement of the UE 102 and the carrier bandwidth of the serving cell, the UE 102 performs measurements on a subset of neighbor cell frequencies. When the UE 102 has a high throughput requirement and the serving cell has a low carrier bandwidth, the UE 102 performs measurements on neighbor cell frequencies with high carrier bandwidths for consideration for cell reselection, such as performing measurements on neighbor cell frequencies with a higher carrier bandwidth than the carrier bandwidth of the current serving cell frequency. Alternatively, when the UE 102 has a low throughput requirement and the serving cell has a high carrier bandwidth, the UE 102 performs measurements on neighbor cell frequencies with low carrier bandwidths for consideration for cell reselection, such as performing measurements on neighbor cell frequencies with a lower carrier bandwidth than the current serving cell frequency.

[0061] At 414, it is determined whether the measured neighbor cell frequency meets the S criterion. Only neighbor cell frequencies that meet the S criterion are considered for cell selection based on carrier bandwidth. According to some aspects, a frequency meets the S criterion when the following conditions are met: Srxlev>0 and Squal>0, where Srxlev is a signal reception level value, and Squal is a signal quality value corresponding to the measured carrier frequency.

[0062] At 416, an offset parameter Q is assigned to each neighboring cell frequency that meets the S criterion at 414. offset_BW According to some aspects, Q offset_BW The initial value of can be set to zero or non-zero value.

[0063] At 418, the carrier bandwidth of each neighbor cell frequency is compared to the serving cell carrier bandwidth. If the UE 102 has a high throughput requirement and the serving cell carrier bandwidth is low, cell reselection is prioritized to the high bandwidth neighbor cell frequency. Alternatively, if the UE 102 has a low throughput requirement and the serving cell carrier bandwidth is high, cell reselection is prioritized to the low bandwidth neighbor cell frequency.

[0064] At 420, based on determining that the carrier bandwidth of the neighbor cell frequency is greater than the serving cell carrier bandwidth and based on determining that UE 102 has a high throughput requirement, the offset parameter Q is set to offset_BW When UE 102 has high throughput requirements, the offset parameter Q offset_BW (That is, Q offset_BW = (set to a positive value) added to the signal level measurement makes the high bandwidth neighbor cell frequency more attractive for cell reselection. According to some aspects, the offset parameter Q offset_BW The value of Q may be determined based on the difference between the carrier bandwidth of the neighboring cell frequency and the carrier bandwidth of the serving cell. According to some aspects, the offset parameter Q offset_BW It can be provided by the network in the SIB.

[0065] Alternatively, based on determining that the carrier bandwidth of the neighboring cell frequency is smaller than the serving cell carrier bandwidth and based on determining that UE 102 has an ultra-low throughput requirement, the offset parameter Q is set to offset_BW When UE 102 has an ultra-low throughput requirement, the offset parameter Q offset_BW (That is, Q offset_BW set to a positive value) is added to the signal level measurement to make the lower bandwidth neighbor cell frequencies more attractive for UE 102 to perform cell reselection.

[0066] At 422, based on determining that the carrier bandwidth of the neighboring cell frequency is less than the serving cell carrier bandwidth and based on determining that UE 102 has a high throughput requirement, the offset parameter Q is set to offset_BW When UE 102 has high throughput requirements, the offset parameter Q is subtracted from the signal level measurement. offset_BW (That is, Q offset_BW set to a negative value) makes the lower bandwidth neighboring cell frequencies less attractive for UE 102 to perform cell reselection.

[0067] Alternatively, based on determining that the carrier bandwidth of the neighboring cell frequency is greater than the serving cell carrier bandwidth and based on determining that UE 102 has an ultra-low throughput requirement, the offset parameter Q is set to offset_BW When UE 102 has an ultra-low throughput requirement, the offset parameter Q offset_BW (That is, Q offset_BW set to a positive value) is added to the signal level measurement to make the higher bandwidth neighbor cell frequencies less attractive for UE 102 to perform cell reselection.

[0068] At 424, the offset parameter is used to calculate a signal reception level value corresponding to the neighboring cell frequency that is a candidate for cell reselection. According to some aspects, the signal reception level value corresponding to the neighboring cell frequency is evaluated as: Srxlev = Q rxlevmeas -(Q rxlevmin +Q rxlevminoffset )-P compensation -Q offset_temp +Q offset_BW , where Q rxlevmeas is the measured neighboring cell frequency reception level (RSRP), and the offset parameter Q rxlevminoffset , P compensation and Q offset_temp Obtained from SIBs (eg, SIB1, SIB2, and SIB 4).

[0069] At 426, UE 102 ranks the signal reception level values ​​corresponding to all candidate neighbor cell frequencies that satisfy the cell selection criteria (eg, S criteria). In accordance with some aspects, UE 102 identifies and selects the cell corresponding to the highest ranked frequency.

[0070] At 430, when UE 102 has high throughput requirements, the UE performs cell reselection to a neighboring NR cell with a higher carrier bandwidth. Alternatively, when UE 102 has low throughput requirements, the UE may perform cell reselection to a neighboring NR cell with a lower carrier bandwidth.

[0071] Figure 5 5 illustrates exemplary operations performed by UE 102 to implement prioritized handover based on carrier bandwidth according to some aspects of the present disclosure. Method 500 may be performed by UE 102, such as Figure 1 and Figure 2 For example, the functionality of the method 500 may be performed by the processor 210 or caused to be performed by the processor 210 of the UE 102 .

[0072] At 502, UE 102 is camped on a cell of an NR base station (e.g., base station 104, 106, or 108) in an RRC connected state and is configured to perform and report intra-frequency and inter-frequency cell measurements. According to some aspects, UE 102 is configured with measurement objects and reporting configurations for one or more measurement reporting events (e.g., events A3, A4, and A5), as specified in 3GPP TS 38.331.

[0073] According to some aspects, UE 102 is configured with a measurement object that identifies the time and frequency locations of reference signals of resources (e.g., SS / PBCH blocks and CSI reference signals) to be measured. In addition, the configured measurement object may specify a set of cell-specific measurement offsets to make various cells appear more or less attractive.

[0074] According to some aspects, the network also provides a reporting configuration to UE 102. According to some aspects, an event triggered configuration for NR measurement reporting is provided to UE 102. The event triggered configuration provides parameters for various measurement events such as, for example, events A3, A4, and A5. The reporting configuration also specifies the reference signal type used to trigger the event, the number of reports transmitted after the event has been triggered, and the time interval between these reports.

[0075] At 504, UE 102 performs measurements on the configured neighbor cell frequency list. According to some aspects, UE 102 performs measurements of synchronization signal (SS) (e.g., SS reference signal received power (SS-RSRP), SS reference signal received quality (SS-RSRP), or SS signal to interference and noise ratio (SS_SINR)) measurements corresponding to the serving cell and the configured neighbor cell frequency list. According to some aspects, UE 102 performs measurements of channel state information (CSI) reference signal (e.g., CSI-RSRP, CSI-RSRQ, and CSI-SINR) measurements corresponding to the serving cell and the configured neighbor cell frequency list.

[0076] At 506, UE 102 obtains the carrier bandwidth value corresponding to the neighbor cell frequency of the serving cell from a stored list database (e.g., stored list database 256 in memory 250). According to some aspects, UE 102 is configured by the network with a list of frequencies that can be measured. UE 102 uses the stored list database to determine the carrier bandwidth of the frequency to be measured.

[0077] At 508, the carrier bandwidth of each neighboring cell frequency is compared to the serving cell carrier bandwidth. If the UE 102 has a high throughput requirement and the carrier bandwidth of the serving cell is low, then the handover of the neighboring cell with the high bandwidth carrier is prioritized. Alternatively, if the UE 102 has a low throughput requirement and the carrier bandwidth of the serving cell is high, then the handover of the neighboring cell with the low bandwidth carrier is prioritized.

[0078] At 510, based on determining that the carrier bandwidth of the neighbor cell frequency is less than the serving cell carrier bandwidth and based on determining that UE 102 has high throughput requirements, a bandwidth-based signal strength offset is subtracted from the neighbor cell frequency measurement. bandwidth According to some aspects, bandwidth-based signal strength offset is used. bandwidth , the neighboring cell frequency measurement result is evaluated as: Meas neigh +O neigh,freq +O neigh,cell -O bandwidth -Hys, where Meas neigh = is the signal measurement (e.g., RSRP, RSRQ, SINR) corresponding to the neighboring cell frequency. When UE 102 has high throughput requirements, a bandwidth-based signal strength offset is subtracted from the frequency measurement. bandwidth This makes the low bandwidth neighboring cell frequency less attractive for handover. According to some aspects, the offset parameter O neigh,freq The offset parameter O is provided by the network (e.g., in a measurement object) and may be specific to the neighboring cell frequency. neigh,cellThe and hysteresis parameters Hys are provided by the network (eg, in a measurement object) and may be specific to a neighboring cell.

[0079] According to some aspects, bandwidth-based signal strength offset O bandwidth The offset is determined by UE 102 based on the difference between the carrier bandwidth of the neighboring cell frequency and the carrier bandwidth of the serving cell. bandwidth The value of Meas neigh According to some aspects, the offset O bandwidth Can be configured to have a value between 0dB and 15dB.

[0080] Alternatively, when UE 102 has a low throughput requirement, based on determining that the carrier bandwidth of the neighboring cell frequency is smaller than the serving cell carrier bandwidth, the bandwidth-based signal strength offset is 0. bandwidth Added to neighbor cell frequency measurement. When UE 102 has low throughput requirements, the neighbor cell frequency measurement results are evaluated as: neigh +O neigh,freq +O neigh,cell +O bandwidth -Hys. When UE 102 has low throughput requirements, the bandwidth-based signal strength offset is 0 bandwidth Adding to the frequency measurement makes low bandwidth neighbor cell frequencies more attractive for handover.

[0081] At 512, based on determining that the carrier bandwidth of the neighbor cell frequency is greater than the serving cell carrier bandwidth and the UE 102 has a high throughput requirement, the bandwidth-based signal strength offset is set to zero. bandwidth Added to neighbor cell frequency measurements. According to some aspects, bandwidth-based signal strength offset is used. bandwidth , the neighboring cell frequency measurement result is evaluated as: Meas neigh +O neigh,freq +O neigh,cell +O bandwidth -Hys. When UE 102 has high throughput requirements, the bandwidth-based signal strength offset is 0 bandwidth Adding to the frequency measurement makes the high bandwidth neighbor cell frequency more attractive for handover. According to some aspects, bandwidth-based signal strength offset bandwidth Determined by UE 102 based on the difference between the carrier bandwidth of the neighboring cell frequency and the carrier bandwidth of the serving cell.

[0082] Alternatively, when UE 102 has low throughput requirements, based on determining that the carrier bandwidth of the neighbor cell frequency is greater than the serving cell carrier bandwidth, a bandwidth-based signal strength offset is subtracted from the neighbor cell frequency measurement.bandwidth When UE 102 has a low throughput requirement, the neighbor cell frequency measurement result is evaluated as: neigh +O neigh,freq +O neigh,cell -O bandwidth -Hys. When UE 102 has low throughput requirements, the bandwidth-based signal strength offset is 0 bandwidth Adding to the frequency measurement makes the higher bandwidth neighbor cell frequency less attractive for handover.

[0083] At 514, it is determined whether the neighbor cell frequency measurement meets the criteria for triggering measurement events A3, A4, and A5.

[0084] According to some aspects, event A3 is triggered when the neighbor cell frequency measurement becomes better than the serving cell measurement by a certain offset. The offset can be a positive or negative value. For example, when UE 102 has high throughput requirements and the carrier bandwidth of the neighbor cell frequency is greater than the serving cell carrier bandwidth, event A3 is triggered when the following conditions are met:

[0085] Meas neigh +O neigh,freq +O neigh,cell -Hys>Mease serv +O serv,freq +O serv,cell -Offset, where Meas serv is a signal measurement corresponding to the serving cell (e.g., RSRP, RSRQ, SINR), and serv,freq , O serv,cell and Offset are parameters provided by the network.

[0086] According to some aspects, event A4 is triggered when the neighbor cell frequency measurement becomes better than a threshold. For example, when UE 102 has high throughput requirements and the carrier bandwidth of the neighbor cell frequency is greater than the serving cell carrier bandwidth, event A4 is triggered when the following conditions are met: neigh +O neigh,freq +O neigh,cell -Hys>Threshold, where the parameter Threshold is provided by the network.

[0087] According to some aspects, event A5 is triggered when the serving cell measurement becomes worse than threshold 1 and the neighboring cell frequency measurement becomes better than threshold 2. For example, when UE 102 has high throughput requirements and the carrier bandwidth of the neighboring cell frequency is greater than the serving cell carrier bandwidth, event A5 is triggered when the following two conditions are met: serv +Hys>Threshold1 and Measneigh +O neigh,freq +O neigh,cell -Hys>Threshold2, where the parameters Threshold1 and Threshold2 are provided by the network.

[0088] At 516, in response to one or more reporting events (events A3, A4, or A5) being triggered, UE 102 transmits a measurement report with information corresponding to the triggered events to the network. The network may then perform a handover to a neighboring cell corresponding to the triggered event.

[0089] Figure 6 An exemplary method 600 for implementing prioritized NR cell prioritization based on carrier bandwidth performed by a UE according to some aspects of the present disclosure is illustrated. For convenience and not limitation, reference may be made to Figures 1 to 5 and Figure 7 Description of the elements Figure 6 The method 600 may also be performed by Figure 2 System 200 and / or Figure 7 The method 600 is performed by a computer system 700. However, the method 600 is not limited to the specific aspects depicted in those figures, and other systems may be used to perform the method, as will be understood by those skilled in the art. It should be understood that not all operations may be required, and these operations may not be performed in the same manner as described above. Figure 6 The same sequence as shown is performed.

[0090] At 602, the UE 102 stores a plurality of neighbor cell frequencies and corresponding carrier bandwidths of the plurality of neighbor cell frequencies. According to some aspects, the UE 102 stores system information received from the NR base stations it previously camped on over time in a stored list database 256. The stored list database 256 includes a list of carrier frequencies that the UE previously camped on and carrier bandwidth information corresponding to each carrier frequency in the list. The stored list database also includes information about cell selection, reselection, and handover parameters from previously received measurement control information elements.

[0091] At 604, UE 102 determines whether a carrier bandwidth corresponding to a neighbor cell frequency in the plurality of neighbor cell frequencies is less than a serving cell carrier bandwidth. According to some aspects, when UE 102 has ultra-low throughput requirements and the carrier bandwidth of the serving cell is greater than a bandwidth required by UE 102, a low-bandwidth neighbor cell frequency in the frequency list is identified for consideration for cell selection, reselection, or handover.

[0092] Alternatively, UE 102 determines whether a carrier bandwidth corresponding to a neighbor cell frequency among the plurality of neighbor cell frequencies is greater than a serving cell carrier bandwidth. According to some aspects, when UE 102 has high throughput requirements and the carrier bandwidth of the serving cell is lower than the bandwidth required by UE 102, a high bandwidth neighbor cell frequency in the frequency list is identified for consideration for cell selection, reselection, or handover.

[0093] At 606, in response to determining that the carrier bandwidth corresponding to the neighboring cell frequency is less than the serving cell carrier bandwidth, the UE 102 determines a biased signal strength measurement by adding an offset to the signal strength measurement corresponding to the neighboring cell frequency, wherein the offset is determined at least in part based on the data throughput requirement of the UE. According to some aspects, when the UE has a low data throughput requirement, the offset is configured as a positive value. Alternatively, when the UE has a high data throughput requirement, the offset is configured as a negative value.

[0094] Alternatively, at 606, in response to determining that the carrier bandwidth corresponding to the neighbor cell frequency is greater than the serving cell carrier bandwidth, the UE 102 determines a biased signal strength measurement by adding an offset to the signal strength measurement corresponding to the neighbor cell frequency, wherein the offset is determined at least in part based on the data throughput requirement of the UE. According to some aspects, when the UE has a low data throughput requirement, the offset is configured as a negative value. Alternatively, when the UE has a high data throughput requirement, the offset is configured as a positive value.

[0095] According to some aspects, the offset is determined based at least in part on a difference between a carrier bandwidth corresponding to a neighboring cell and a serving cell carrier bandwidth.

[0096] At 608, UE 102 uses the biased signal strength measurement corresponding to the neighboring cell frequency to evaluate the signal strength criterion of the neighboring cell frequency. According to some aspects, the signal strength criterion is a cell reselection criterion for the neighboring cell frequency. According to some aspects, the signal strength criterion corresponds to a triggering criterion of measurement event A3, A4, or A5.

[0097] For example, one or more computer systems such as Figure 7 The computer system 700 shown is used to implement various aspects. The computer system 700 may be any well-known computer capable of performing the functions described herein, such as Figure 1UE 102. Computer system 700 includes one or more processors (also referred to as central processing units or CPUs), such as processor 704. Processor 704 is connected to a communication infrastructure 706 (e.g., a bus). Computer system 700 also includes user input / output devices 703, such as a monitor, keyboard, pointing device, etc., that communicate with communication infrastructure 706 through user input / output interface 702. Computer system 700 also includes main memory or primary storage 708, such as random access memory (RAM). Main memory 708 may include one or more levels of cache. Main memory 708 has control logic components (e.g., computer software) and / or data stored therein.

[0098] The computer system 700 may also include one or more secondary storage devices or memories 710. The secondary storage 710 may include, for example, a hard disk drive 712 and / or a removable storage device or drive 714. The removable storage drive 714 may be a floppy disk drive, a tape drive, an optical drive, an optical storage device, a tape backup device, and / or any other storage device / drive.

[0099] The removable storage drive 714 may interact with a removable storage unit 718. The removable storage unit 718 includes a computer usable or readable storage device having computer software (control logic) and / or data stored thereon. The removable storage unit 718 may be a floppy disk, a magnetic tape, a compact disk, a DVD, an optical storage disk, and / or any other computer data storage device. The removable storage drive 714 reads from and / or writes to the removable storage unit 718 in a well-known manner.

[0100] According to some aspects, the secondary memory 710 may include other components, tools, or other methods for allowing the computer system 700 to access computer programs and / or other instructions and / or data. Such components, tools, or other methods may include, for example, a removable storage unit 722 and an interface 720. Examples of removable storage units 722 and interfaces 720 may include a program cartridge and cartridge interface (such as found in video game devices), a removable memory chip (such as an EPROM or PROM) and an associated socket, a memory stick and USB port, a memory card and an associated memory card slot, and / or any other removable storage unit and associated interface.

[0101] The computer system 700 may also include a communication or network interface 724. The communication interface 724 enables the computer system 700 to communicate and interact with any combination of remote devices, remote networks, remote entities, etc. (individually and collectively referenced by reference numeral 728). For example, the communication interface 724 may allow the computer system 700 to communicate with the remote device 728 via a communication path 726, which may be wired and / or wireless and may include any combination of a LAN, a WAN, the Internet, etc. Control logic components and / or data may be sent to and from the computer system 700 via the communication path 726.

[0102] The operations in the foregoing aspects can be implemented in various configurations and architectures. Thus, some or all of the operations in the foregoing aspects can be performed in hardware, software, or in both hardware and software. In some aspects, a tangible, non-transient device or article includes a tangible, non-transient computer-usable or readable medium on which a control logic component (software) is stored, also referred to herein as a computer program product or program storage device. This includes, but is not limited to, a computer system 700, a main memory 708, an auxiliary memory 710, and removable storage units 718 and 722, as well as tangible articles embodying any combination of the foregoing. Such control logic components, when executed by one or more data processing devices (such as computer system 700), cause such data processing devices to operate as described herein.

[0103] Based on the teachings contained in this disclosure, it will be apparent to those skilled in the relevant art how to use the Figure 7 The various aspects of the present disclosure may be made and used with data processing devices, computer systems, and / or computer architectures other than those shown. In particular, the various aspects may operate with software, hardware, and / or operating system implementations other than those described herein.

[0104] It should be understood that the Detailed Description section, rather than the Summary and Abstract sections, is intended to be used to interpret the claims. The Summary and Abstract sections may set forth one or more but not all exemplary aspects of the present disclosure as contemplated by the inventors, and thus are not intended to limit the present disclosure or the appended claims in any way.

[0105] Although the present disclosure has been described herein with reference to exemplary aspects of exemplary fields and applications, it should be understood that the present disclosure is not limited thereto. Other aspects and modifications are possible and are within the scope and essence of the present disclosure. For example, and without limiting the generality of this paragraph, the various aspects are not limited to the software, hardware, firmware, and / or entities illustrated in the figures and / or described herein. In addition, the various aspects (whether or not explicitly described herein) have significant practicality for fields and applications beyond the examples described herein.

[0106] Various aspects have been described herein by means of functional building blocks that illustrate the specific implementation of specific functions and their relationships. For ease of description, the boundaries of these functional building blocks have been arbitrarily defined herein. As long as the specified functions and relationships (or their equivalents) are properly performed, alternative boundaries may be defined. In addition, alternative aspects may use an order different from the order described herein to perform functional blocks, steps, operations, methods, etc.

[0107] References herein to "one aspect," "aspect," "one example," "example," or similar phrases indicate that the described aspects may include a particular feature, structure, or characteristic, but each aspect may not necessarily include the particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same aspect. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with one aspect, it is within the knowledge of a person skilled in the relevant art to incorporate such feature, structure, or characteristic into other aspects, whether or not explicitly mentioned or described herein.

[0108] The breadth and scope of the present disclosure should not be limited by any of the above-described exemplary aspects, but should be defined only in accordance with the following claims and their equivalents.

[0109] The disclosure anticipates that entities responsible for the collection, analysis, disclosure, transmission, storage or other purposes of such personal information data will comply with sound privacy policies and / or privacy measures. Specifically, such entities should implement and adhere to the use of privacy policies and measures that are recognized as meeting or exceeding the industry or government requirements for maintaining the privacy and security of personal information data. Such policies should be easy for users to access and should be updated as changes in the collection and / or use of data are made. Personal information from users should be collected for legal and reasonable entity purposes and should not be shared or sold outside these legal purposes. In addition, such collection / sharing should only be after receiving the user's informed consent. Additionally, such entities should consider taking any necessary steps to protect and safeguard access to such personal information data, and ensure that other entities with access to personal information data comply with the privacy policies and procedures of other entities. In addition, such entities can subject themselves to third-party assessments to prove that they comply with widely accepted privacy policies and privacy practices. In addition, policies and practices should be adapted to specific types of personal information data collected and / or accessed, and to applicable laws and standards including considerations of special jurisdictions. For example, in the United States, the collection or acquisition of certain health data may be governed by federal and / or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); while health data in other countries may be subject to other regulations and policies and should be handled accordingly. Therefore, different privacy measures should be advocated for different types of personal data in each country.

Claims

1. A device, comprising: Memory; a processor coupled to the memory and configured to: storing a plurality of neighboring cell frequencies and corresponding carrier bandwidths of the plurality of neighboring cell frequencies; Determining whether a carrier bandwidth corresponding to a neighboring cell frequency among the plurality of neighboring cell frequencies is smaller than a serving cell carrier bandwidth; In response to determining that the carrier bandwidth corresponding to the neighbor cell frequency is less than the serving cell carrier bandwidth, determining a biased signal strength measurement by adding an offset to a signal strength measurement corresponding to the neighbor cell frequency, wherein the offset is determined based at least in part on a data throughput requirement of a user equipment (UE); as well as The biased signal strength measurement corresponding to the neighbor cell frequency is used to evaluate a signal strength criterion for the neighbor cell frequency.

2. The apparatus according to claim 1, wherein the UE has a low data throughput requirement and the offset is configured as a positive value. 3 . The apparatus of claim 1 , wherein the UE has a high data throughput requirement and the offset is configured as a negative value.

4. The apparatus according to claim 1, wherein the processor is further configured to: In response to determining that the carrier bandwidth corresponding to a second neighbor cell frequency is greater than the serving cell carrier bandwidth, determining a second biased signal strength measurement by adding a second offset to the signal strength measurement corresponding to the second neighbor cell frequency, wherein the second offset is determined based at least in part on the data throughput requirement of the UE; and The signal strength criterion for the second neighbor cell frequency is evaluated using the second biased signal strength measurement corresponding to the second neighbor cell frequency. The apparatus of claim 1 , wherein the UE has a low data throughput requirement and the offset is configured as a negative value. The apparatus of claim 1 , wherein the UE has a high data throughput requirement and the offset is configured as a positive value.

7. The apparatus of claim 1, wherein the signal strength criterion is a cell reselection criterion for the neighboring cell frequency.

8. The apparatus of claim 1, wherein the signal strength criterion is an Event A3, Event A4, or Event A5 criterion.

9. The apparatus of claim 1, wherein the offset is determined based at least in part on a difference between the carrier bandwidth corresponding to the neighboring cell and the serving cell carrier bandwidth.

10. A method of operating a user equipment (UE), the method comprising: storing a plurality of neighboring cell frequencies and corresponding carrier bandwidths of the plurality of neighboring cell frequencies; Determining whether a carrier bandwidth corresponding to a neighboring cell frequency among the plurality of neighboring cell frequencies is smaller than a serving cell carrier bandwidth; In response to determining that the carrier bandwidth corresponding to the neighbor cell frequency is less than the serving cell carrier bandwidth, determining a biased signal strength measurement by adding an offset to a signal strength measurement corresponding to the neighbor cell frequency, wherein the offset is determined based at least in part on a data throughput requirement of the UE; as well as The biased signal strength measurement corresponding to the neighbor cell frequency is used to evaluate a signal strength criterion for the neighbor cell frequency. The method of claim 10 , wherein the UE has a low data throughput requirement and the offset is configured as a positive value.

12. The method of claim 10, wherein the UE has a high data throughput requirement and the offset is configured as a negative value.

13. The method according to claim 10, further comprising: In response to determining that the carrier bandwidth corresponding to a second neighbor cell frequency is greater than the serving cell carrier bandwidth, calculating a second biased signal strength measurement by adding a second offset to the signal strength measurement corresponding to the second neighbor cell frequency, wherein the second offset is determined based at least in part on the data throughput requirement of the UE; as well as The signal strength criterion for the second neighbor cell frequency is evaluated using the second biased signal strength measurement corresponding to the second neighbor cell frequency.

14. The method of claim 10, wherein the UE has a low data throughput requirement and the offset is configured as a negative value.

15. The method of claim 10, wherein the UE has a high data throughput requirement and the offset is configured as a positive value.

16. A non-transitory computer readable medium (CRM) having instructions stored thereon, the instructions, when executed by a processor of a user equipment (UE), cause the UE to perform operations comprising: storing a plurality of neighboring cell frequencies and corresponding carrier bandwidths of the plurality of neighboring cell frequencies; Determining whether a carrier bandwidth corresponding to a neighboring cell frequency among the plurality of neighboring cell frequencies is smaller than a serving cell carrier bandwidth; In response to determining that the carrier bandwidth corresponding to the neighbor cell frequency is less than the serving cell carrier bandwidth, determining a biased signal strength measurement by adding an offset to a signal strength measurement corresponding to the neighbor cell frequency, wherein the offset is determined based at least in part on a data throughput requirement of the UE; as well as The biased signal strength measurement corresponding to the neighbor cell frequency is used to evaluate a signal strength criterion for the neighbor cell frequency.

17. The non-transient CRM of claim 16, wherein the UE has a low data throughput requirement and the offset is configured as a positive value.

18. The non-transient CRM of claim 16, wherein the UE has a high data throughput requirement and the offset is configured as a negative value.

19. The non-transitory CRM of claim 16, the operations further comprising: In response to determining that the carrier bandwidth corresponding to a second neighbor cell frequency is greater than the serving cell carrier bandwidth, determining a second biased signal strength measurement by adding a second offset to the signal strength measurement corresponding to the second neighbor cell frequency; and The signal strength criterion for the second neighbor cell frequency is evaluated using the second biased signal strength measurement corresponding to the second neighbor cell frequency.

20. The non-transient CRM of claim 19, wherein the offset is configured as a negative value based on the UE having a low throughput requirement; and wherein the offset is configured as a positive value based on the UE having a high throughput requirement.

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