A method for measuring interference between subbands of user equipment
The method for measuring cross-link interference in SBFD systems by dividing sub-bands and selectively reporting significant interference addresses inefficiencies and interference challenges, enhancing energy efficiency and network performance.
Patent Information
- Application Number
- PCT/TR2025/050779
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-07-21
- Publication Date
- 2026-02-05
AI Technical Summary
Existing methods for measuring cross-link interference in sub-band full duplex (SBFD) wireless communication systems are inefficient, consuming substantial radio resources and processing power, leading to energy consumption and network congestion, while traditional duplexing methods face inefficiencies in dynamic resource allocation and new interference scenarios.
A method for user equipment to measure cross-link interference by dividing sub-bands into customizable parts, performing sequential interference measurements within coherence time, comparing with thresholds, and selectively reporting only significant interference to the base station, using historical data for dynamic adjustments.
This approach reduces unnecessary measurements, conserves energy, prevents network congestion, and optimizes communication performance by accurately identifying and managing interference, applicable in LTE, 5G, and future wireless technologies.
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Figure TR2025050779_05022026_PF_FP_ABST
Abstract
Description
[0001] A METHOD FOR MEASURING INTERFERENCE BETWEEN SUBBANDS OF USER EQUIPMENT
[0002] TECHNICAL FIELD
[0003] The invention relates to a method for enabling the measurement of user to user cross link interference to be implemented by user equipment.
[0004] PRIOR ART
[0005] In traditional duplexing methods like frequency division duplexing (FDD) and time division duplexing (TDD), the downlink and uplink either occupy different frequency bands or operate at different times, respectively. Sub-band full-duplex (SBFD) technology, in contrast, offers a more efficient use of the spectrum. SBFD allows for simultaneous downlink and uplink communications within the same frequency band but segregates them into different sub-bands. This means that within a given frequency band, a portion is allocated for downlink and another portion for uplink, and both can operate at the same time. This approach minimizes interference between the two communication streams by maintaining a separation within the sub-bands, which can be managed through advanced filtering and signal processing techniques. However, with SBFD, the spectrum is more efficiently utilized because it allows for simultaneous downlink and uplink communications in the same frequency band but in different subbands, thus avoiding interference. SBFD concept allows simultaneous transmission and reception in different sub-bands of the same frequency band; it enhances spectrum efficiency, which is crucial for supporting the growing demand for data in 5G networks.
[0006] In traditional duplexing methods, the allocation of UL and DL resources is often fixed, which can lead to inefficiencies, especially when there is a variable and asymmetric demand between downlink and uplink traffic. SBFD allows for more dynamic allocation of spectrum resources because it enables simultaneous DL and UL transmissions in separate sub-bands of the same frequency band. This flexibility means that UL resources can be increased when demand is high without compromising DL traffic, leading to more efficient use of the spectrum.
[0007] SBFD introduces new interference scenarios not typically encountered in dynamic TDD (D-TDD). These interferences arise because SBFD allows simultaneous transmission and reception within different sub-bands of the same frequency band, potentially leading to cross-talk between these sub-bands. The invention confronts the complex challenge of managing two principal types of interference in sub-band full duplex wireless communication systems: user equipment to user equipment (UE-to- UE) inter sub-band interference and user equipment to user equipment intra sub-band interference.
[0008] UE-to-UE Inter Sub-band Interference occurs when the uplink (UL) transmission from one user equipment (UE), referred to as the aggressor, adversely affects the downlink (DL) reception of another UE, known as the victim, across different sub-bands. Specifically, in a scenario where DL and UL sub-bands are adjacent, the high-power transmissions in the UL sub-band can bleed into the DL sub-band, causing interference that impairs the victim UE's ability to correctly receive and decode intended signals. This is often the result of imperfect isolation between sub-bands and the non-linear behavior of radio frequency components, which becomes even more challenging with the close frequency proximity in full duplex systems.
[0009] UE-to-UE Intra Sub-band Interference happens within the same frequency sub-band, where the aggressor UE's UL transmission intrudes upon the reception of another UE's DL signal within the same sub-band. This type of interference can be particularly detrimental because the interfering signal exists within the frequency range that the victim UE is actively trying to monitor for legitimate downlink data. It typically results from overlapping resource blocks where multiple UEs from different base stations are scheduled to transmit and receive in the same sub-band simultaneously, which can occur due to non-ideal scheduling decisions or rapid changes in the radio environment.
[0010] The challenge that these interference types present is not merely their presence but also their dynamic and unpredictable nature. As wireless networks grow denser and demand for bandwidth increases, the potential for both inter and intra-sub-band interference escalates, increases the difficulty in maintaining signal integrity and network throughput.
[0011] To effectively address interference challenges in 5G networks, especially within SubBand Full Duplex (SBFD) scenarios, the industry standards are evolving to incorporate advanced interference mitigation techniques. These methodologies are primarily focused on spatial domain strategies, coordinated scheduling across time and frequency domains, power control mechanisms, and Cross-Link Interference (CLI) measurement and modeling techniques.
[0012] A critical aspect of successful interference mitigation is the precise understanding and modeling of CLI between UEs. This involves measuring the interference levels between different UEs to identify potential co-channel interference paths. These measurements can guide the application of more targeted interference mitigation techniques. It serves as an enabler or foundational step for implementing other CLI handling strategies by providing essential data on the interference landscape.
[0013] The existing approaches to CLI estimation such interference involve extensive and continuous measurement across all sub-bands to determine the level of interference. This can be highly inefficient, as it consumes substantial radio resources and processing power, leading to increased energy consumption and potential delays in other critical network operations. Moreover, comprehensive measurements generate a overhead of reporting data that must be transmitted to and processed by base stations (BS), potentially causing additional network congestion and reducing the efficiency of wireless communication systems.
[0014] Application number WO2023212018A1 discloses methods and arrangements for cross-link interference (CLI) mitigation in wireless communication systems, focusing on Time Division Duplex (TDD) operations. It presents a system that tackles CLI between different gNodeBs (gNBs) and between user equipment (UE) and gNB. The primary types of interference addressed are gNB-to-gNB and UE-to-UE, typically caused by dynamic TDD operations. Various techniques for mitigating CLI are outlined, such as using reference signals (CLI-RS) to measure interference, coordinating backhaul signaling, and employing muting patterns to minimize interference during measurement. The patent also elaborates on non-overlapping sub-band full duplex (SBFD) operations, where uplink (UL) and downlink (DL) use separate sub-bands to avoid interference. The patent describes methods for measuring CLI, transmitting and sharing CLI-RS configurations, and reporting measurement results to coordinate mitigation between gNBs.
[0015] Application number US2023421222A1 discloses a system for measuring and reporting Cross-Link Interference (CLI) in a sub-band full duplex (SBFD) environment, specifically addressing UE-to-UE and UE-to-BS interference scenarios. In these scenarios, uplink (UL) and downlink (DL) signals may share overlapping sub-bands, leading to potential interference. The patent discusses a CSI-RS and CSI-IM resourcebased approach to derive interference measurements, allowing for more granular reporting and identification of specific interference sources. The patent also delves into sub-band-based reporting mechanisms, where CSI and CLI can be reported on a subband basis, providing the ability to derive these sub-bands and configure their sizes as needed.
[0016] All the problems mentioned above have made it necessary to make an innovation in the relevant technical field as a result.
[0017] BRIEF DESCRIPTION OF THE INVENTION
[0018] The present invention relates to a method to eliminate the above-mentioned disadvantages and bring new advantages to the relevant technical field.
[0019] An object of the invention is a method that enables measurement of cross link interference between sub-bands of user equipment.
[0020] To achieve all the objects mentioned above and that will emerge from the following detailed description, a method for enabling the measurement of user to user cross link interference to be implemented by user equipment. Accordingly, it comprises the steps of dividing the sub-band into sub-parts as many as number of parts entered via the user interface, numbering each sub-band part sequentially making measurement of interference sequentially for each of the numbered sub-band parts, starting from the smallest numbered sub-band part, within the coherence time, comparing each interference measurement value with a threshold value, as a result of the comparison; if the interference measurement value is greater than the threshold value, making measurement of interference of the sub-band part following measured sub-band part, if the interference measurement value is less than the threshold value, reporting to the base station the interference measurement values preceding the sub-band part that measurement interference value, reporting the measurement of interference completion information to the base station when the coherence time is completed.
[0021] A possible embodiment of the invention is characterized comprising the steps of; dividing the sub-band into uniform sub-parts as many as number of parts entered via the user interface, numbering each uniform sub-band part sequentially, making measurement of interference sequentially for each of the numbered uniform sub-band parts, starting from the smallest numbered uniform sub-band part within the coherence time comparing each interference measurement value with a threshold value, as a result of the comparison; if the interference measurement value is greater than the threshold value, making measurement of interference of the uniform sub-band part following measured uniform sub-band part, if the interference measurement value is less than the threshold value, reporting to the base station the interference measurement values preceding the uniform sub-band part that measurement interference value, reporting the measurement of interference completion information to the base station when the coherence time is completed.
[0022] Another possible embodiment of the invention is characterized comprising the steps of dividing the sub-band into non-uniform sub-parts as many as number of parts entered via the user interface, numbering each non-uniform sub-band part sequentially, making measurement of interference sequentially for each of the numbered non-uniform subband parts, starting from the smallest numbered non-uniform sub-band part within the coherence time, comparing each interference measurement value with a threshold value, as a result of the comparison; if the interference measurement value is greater than the threshold value, making measurement of interference of the non-uniform subband part following measured non-uniform sub-band part if the interference measurement value is less than the threshold value, reporting to the base station the interference measurement values preceding the non-uniform sub-band part that measurement interference value, reporting the measurement of interference completion information to the base station when the coherence time is completed.
[0023] Another possible embodiment of the invention is characterized comprising the steps of dividing the sub-band into uniform sub-band parts as many as number of parts entered via the user interface, numbering each uniform sub-band part sequentially, making measurement of interference sequentially / simultaneously for each of the numbered uniform sub-band parts, starting from the smallest numbered uniform sub-band part, comparing the measured interference value of each uniform sub-band part with the threshold value, taking a difference of the interference values of consecutive uniform sub-band parts whose measured interference value is greater than the threshold value determining a number of band corresponding to the reference band range where the difference is found as a result of matching the difference with the reference band ranges in a memory unit, dividing the total bandwidth of the differenced uniform subband parts into the number of bands determined and creating non-uniform sub-band parts over the whole sub-band region, making interference measurements for each non uniform sub-band part, comparing the measured interference value of each non uniform sub-part with the threshold value, as a result of the comparison; if the interference measurement value is greater than the threshold value, making measurement of interference of the non-uniform sub-band part following measured non-uniform sub-band part, if the interference measurement value is less than the threshold value, reporting to the base station the interference measurement values preceding the non-uniform sub-band part that measurement interference value reporting the measurement of interference completion information to the base station when the coherence time is completed.
[0024] Another possible embodiment of the invention is characterized in that comprises the adjustment is made dynamically based on real-time interference measurements. Another possible embodiment of the invention is characterized in that comprises the reference interference value is dynamically updated based on historical interference data stored in the memory unit.
[0025] Another possible embodiment of the invention is characterized comprising the steps of generating alerts to the user equipment when the interference values exceed predefined thresholds.
[0026] BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a drawing illustrating schematic view of the system.
[0028] Figure 2 is a drawing illustrating schematic view of the sequential cross link interference measurement.
[0029] REFERENCE NUMBERS GIVEN IN THE FIGURE
[0030] 10 Base station
[0031] 20 User equipment
[0032] 30 Sub-band
[0033] 40 Uniform sub-band part
[0034] 50 Non uniform sub-band part
[0035] DETAILED DESCRIPTION OF THE INVENTION
[0036] In this detailed description, the subject matter is explained with references to examples without forming any restrictive effect only in order to make the subject more understandable.
[0037] The invention relates to a method to be realized by user equipment (20) that enables the sequential measurement of crosslink interference occurring between sub-bands (30) of user equipment (20). The preferred embodiment of the present invention provides a comprehensive method for enabling the measurement and management of user-to-user inter sub-band (30) sequential cross-link interference, implemented by user equipment (20) in a wireless communication system. The method provides efficient and accurate interference measurement to ensure that the overall performance of the communication system is optimized.
[0038] As shown in Figure 1 and figure 2; the user equipment (20) first ensures that the subband (30) is divided into sub-band (30) parts with a number of parts. The number of parts is entered via the user interface, which allows the user to customize the granularity of the division based on specific system requirements or operational conditions. Each sub-band (30) part is numbered sequentially. Each sub-band (30) part is numbered in ascending order, starting from the sub-band (30) part closest to the uplink sub-band (30) to the end of the sub-band (30) region. The user equipment (20) enables interference measurements to be made for each of the sub-band (30) parts, starting from the smallest numbered sub-band (30) part. These measurements are performed within the coherence time. In a possible embodiment of the invention, the interference measurement is performed on the control channels. These control channels carry the signaling information required for data transmission. Thus, measurement of the interference with increased accuracy is ensured. Accurate interference measurements enable the detection of problem areas within the sub-band (30) that are subject to higher levels of interference. The measured interference value in each sub-band (30) part is compared with a predefined threshold value. The threshold value enables the identification of sub-band (30) parts with higher than acceptable interference levels. If the interference measurement value is greater than the threshold value, interference measurement of the sub-band (30) part following the measured sub-band (30) part is ensured. If the interference measurement value is less than the threshold value, the interference values of the sub-band (30) parts preceding the measured sub-band (30) part is reported to the base station (10). When the coherence time is completed, interference measurement completion information is reported to the base station (10).
[0039] As shown in Figure 2 in an alternative embodiment of the invention, the user equipment (20) first ensures that the sub-band (30) is divided into uniform sub-band parts (40) in the number entered via the user interface. Each uniform sub-band part (40) is numbered sequentially. Each uniform sub-band part (40) is numbered in ascending order, starting from the uniform sub-band part (40) closest to the uplink sub-band (30) to the end of the sub-band (30) region. The user equipment (20) enables interference measurements to be made for each of the uniform sub-band parts (40), starting from the smallest numbered uniform sub-band part (40). These measurements are performed within the coherence time. The measured interference value in each uniform sub-band part (40) is compared with a threshold value. If the interference measurement value is greater than the threshold value, interference measurement of the uniform sub-band part (40) following the measured uniform sub-band part (40) is ensured. If the interference measurement value is less than the threshold value, the interference values of the uniform sub-band parts (40) preceding the measured uniform sub-band part (40) is reported to the base station (10). When the coherence time is completed, interference measurement completion information is reported to the base station (10).
[0040] In an alternative embodiment of the invention, the user equipment (20) first ensures that the sub-band (30) is divided into non uniform sub-band parts (50) in the number entered via the user interface. Each non uniform sub-band part (50) is numbered sequentially. Each non uniform sub-band part (50) is numbered in ascending order, starting from the non uniform sub-band part (50) closest to the uplink sub-band (30) to the end of the sub-band (30) region. The user equipment (20) enables interference measurements to be made for each of the non uniform sub-band parts (50), starting from the smallest numbered non uniform sub-band part (50). These measurements are performed within the coherence time. The measured interference value in each non uniform sub-band part (50) is compared with a threshold value. If the interference measurement value is greater than the threshold value, interference measurement of the non uniform sub-band part (50) following the measured non uniform sub-band part (50) is ensured. If the interference measurement value is less than the threshold value, the interference values of the non uniform sub-band parts (50) preceding the measured non uniform sub-band part (50) is reported to the base station (10). When the coherence time is completed, interference measurement completion information is reported to the base station (10). In another alternative embodiment of the invention, the sub-band (30) is divided into uniform sub-band parts (40) equal to the number of parts entered through the user interface, and each uniform sub-band part (40) is numbered sequentially. Each uniform sub-band part (40) is numbered in ascending order, starting from the uniform sub-band part (40) closest to the uplink sub-band (30) to the end of the sub-band (30) region. Starting from the smallest uniform sub-band part (40), interference measurements are made for each numbered uniform sub-band part (40) and the measurement interference values are compared with the threshold value. If the interference measurement value is greater than the threshold value, the differences of the measured interference values of the consecutive uniform sub-band parts (40) are taken. These differences are matched with a reference band range and the number of bands corresponding to the relevant band range is determined. Reference band range information is stored in a memory unit. The total bandwidth of the differenced uniform sub-band parts (40) is further divided into uniform sub-band parts (40) in the determined number of bands. For example, the memory unit contains the information that the sub-band (30) part corresponding to the first reference band range is divided into 2 parts, and the sub-band (30) part corresponding to the second reference band range is divided into 4 parts. If it is determined that the detected difference is within the second reference band range, it can be determined that the sub-band (30) part should be further divided into 4 uniform sub-band parts (40). This may vary depending on the interference values of consecutive sub-band (30) parts and the bandwidth length. For sub-band (30) parts that are not on the edge, two different partition number values may be obtained since they are differenced from the preceding and subsequent sub-band (30) parts. In this case, greater reference badge is considered. Interference measurements are made for non-uniform sub-band parts (50) and these measurements are compared with the determined threshold value. If the interference measurement value is greater than the threshold value, interference measurement of the non uniform sub-band part (50) following the measured non uniform sub-band part (50) is ensured. If the interference measurement value is less than the threshold value, the interference values of the non uniform sub-band parts (50) preceding the measured non uniform sub-band part (50) is reported to the base station (10). Thus, a more detailed measurement of how variable interference levels change in certain band ranges is provided. When the coherence time is completed, interference measurement completion information is reported to the base station (10).
[0041] Information of the reference band range and the number of bands corresponding to the reference band range are predetermined and recorded in the memory unit. In a possible embodiment of the invention, the memory unit can be a RAM, ROM, SSD, HDD, a memory, etc.
[0042] The interference values transmitted to the base station (10) are stored in the memory unit. Thus, data is stored for later use. This plays an important role in optimizations to increase the performance and efficiency of the system. Historical interference measurement data can be used to predict the future performance of the system and detect potential problems in advance. Additionally, these data allow dynamic adjustments to be made to better adapt the system to operating conditions. Analysis of historical data also plays an important role in evaluating the effectiveness of the system's interference management strategies. This prompt helps the system constantly improve and optimize itself.
[0043] The reference interference value is dynamically updated based on historical interference data stored in the memory unit. This updating process ensures that the system continuously improves its accuracy by learning from past interference patterns and adapting to new conditions.
[0044] The described method ensures efficient and accurate measurement and management of interference in wireless communication systems. By dynamically adjusting to realtime conditions and leveraging historical data, the system can maintain optimal performance and reliability. This method is applicable in various wireless communication environments, including LTE, 5G, and future wireless technologies, where managing user-to-user interference is crucial for ensuring high-quality communication. An important advantage of this method is that it provides a proactive reporting strategy. Using the sequential measurement approach, the system only measures and reports sub-band (30) fragments that exhibit interference above a defined threshold. This selective reporting and measurement strategy significantly reduces data exchange between the user equipment (20) and the base station (10) and prevents performing unnecessary measurement by UE, facilitating communication and preventing potential network congestion caused by excessive reporting and providing energy saving for UE.
[0045] In order to achieve all the objects stated above and arising from the above detailed description,
[0046] This method is characterized by including the following steps;
[0047] - dividing the sub-band (30) into sub-band (30) parts as many as number of parts entered via the user interface,
[0048] - numbering each sub-band (30) part sequentially,
[0049] - making measurement of interference sequentially for each of the numbered sub-band (30) parts, starting from the smallest numbered sub-band part (30), within the coherence time,
[0050] - comparing each interference measurement value with a threshold value, as a result of the comparison; if the interference measurement value is greater than the threshold value, making measurement of interference of the sub-band (30) part following measured sub-band part (30), if the interference measurement value is less than the threshold value, reporting to the base station (10) the interference measurement values preceding the sub-band part (30) that measurement interference value,
[0051] -reporting the measurement of interference completion information to the base station (10) when the coherence time is completed.
[0052] A possible embodiment of the invention is that this method includes the steps of
[0053] - dividing the sub-band (30) into uniform sub-band parts (40) as many as number of parts entered via the user interface,
[0054] - numbering each uniform sub-band part (40) sequentially,
[0055] - making measurement of interference sequentially for each of the numbered uniform sub-band parts (40), starting from the smallest numbered uniform sub-band part (40) within the coherence time
[0056] - comparing each interference measurement value with a threshold value, as a result of the comparison;
[0057] -if the interference measurement value is greater than the threshold value, making measurement of interference of the uniform sub-band part (40) following measured uniform sub-band part (40) if the interference measurement value is less than the threshold value, reporting to the base station (10) the interference measurement values preceding the uniform sub-band part (40) that measurement interference value
[0058] -reporting the measurement of interference completion information to the base station (10) when the coherence time is completed.
[0059] A possible embodiment of the invention is that this method includes the steps of -dividing the sub-band (30) into non-uniform sub-band parts (50) as many as number of parts entered via the user interface,
[0060] -numbering each non-uniform sub-band part (50) sequentially,
[0061] -making measurement of interference sequentially for each of the numbered non- uniform sub-band parts (50), starting from the smallest numbered non-uniform subband part (50) within the coherence time,
[0062] -comparing each interference measurement value with a threshold value, as a result of the comparison;
[0063] -if the interference measurement value is greater than the threshold value, making measurement of interference of the non-uniform sub-band part (50) following measured non-uniform sub-band part (50), if the interference measurement value is less than the threshold value, reporting to the base station (10) the interference measurement values preceding the non-uniform sub-band part (50) that measurement interference value
[0064] -reporting the measurement of interference completion information to the base station (10) when the coherence time is completed.
[0065] A possible embodiment of the invention is that this method includes the step of -dividing the sub-band (30) into uniform sub-band parts (40) as many as number of parts entered via the user interface, -numbering each uniform sub-band part (40) sequentially, -making measurement of interference sequentially / simultaneously for each of the numbered uniform sub-band parts (40), starting from the smallest numbered uniform sub-band part (40),
[0066] -comparing the measured interference value of each uniform sub-band part (40) with the threshold value
[0067] -taking a difference of the interference values of consecutive uniform sub -band parts (40) whose measured interference value is greater than the threshold value
[0068] -determining a number of band corresponding to the reference band range where the difference is found as a result of matching the difference with the reference band ranges in a memory unit,
[0069] -dividing the total bandwidth of the differenced uniform sub-band parts (40) into the number of bands determined and creating non-uniform sub-band parts (50) over the whole sub-band (30) region,
[0070] -making interference measurements for each non uniform sub-band part (50), -comparing the measured interference value of each non uniform sub-band part (50) with the threshold value, as a result of the comparison;
[0071] -if the interference measurement value is greater than the threshold value, making measurement of interference of the non-uniform sub-band part (50) following measured non-uniform sub-band part (50), if the interference measurement value is less than the threshold value, reporting to the base station (10) the interference measurement values preceding the non-uniform sub-band part (50) that measurement interference value
[0072] -reporting the measurement of interference completion information to the base station (10) when the coherence time is completed.
[0073] A possible embodiment of the invention is that by further comprising the step of saving the interference values reported to the base station (10) to the memory unit.
[0074] A possible embodiment of the invention is that the adjustment is made dynamically based on real-time interference measurements. A possible embodiment of the invention is that the threshold value is dynamically updated based on historical interference data stored in the memory unit.
[0075] A possible embodiment of the invention is that by further comprising the step of generating alerts to the user equipment (20) when the interference values exceed predefined thresholds.
[0076] The scope of protection of the invention is specified in the attached claims and cannot be limited to those explained for sampling purposes in this detailed description. It is evident that a person skilled in the art may exhibit similar embodiments in light of the above-mentioned facts without drifting apart from the main theme of the invention.
Claims
CLAIMS1 . A method for enabling the measurement of user to user cross link interference to be implemented by user equipment (20) characterized in that it comprises the steps of- dividing the sub-band (30) into sub-band (30) parts as many as number of parts entered via the user interface,- numbering each sub-band (30) part sequentially,- making measurement of interference sequentially for each of the numbered subband (30) parts, starting from the smallest numbered sub-band (30) part, within the coherence time,- comparing each interference measurement value with a threshold value, as a result of the comparison;- if the interference measurement value is greater than the threshold value, making measurement of interference of the sub-band (30) part following measured sub-band (30) part, if the interference measurement value is less than the threshold value, reporting to the base station (10) the interference measurement values preceding the sub-band (30) part that measurement interference value,- reporting the measurement of interference completion information to the base station (10) when the coherence time is completed.
2. The method according to claim 1 , characterized in that it comprises the steps of- dividing the sub-band (30) into uniform sub-band parts (40) as many as number of parts entered via the user interface,- numbering each uniform sub-band part (40) sequentially,- making measurement of interference sequentially for each of the numbered uniform sub-band parts (40), starting from the smallest numbered uniform subband part (40), within the coherence time,- comparing each interference measurement value with a threshold value, as a result of the comparison;- if the interference measurement value is greater than the threshold value,making measurement of interference of the uniform sub-band part (40) following measured uniform sub-band part (40), if the interference measurement value is less than the threshold value, reporting to the base station (10) the interference measurement values preceding the uniform sub-band part (40) that measurement interference value- reporting the measurement of interference completion information to the base station (10) when the coherence time is completed.
3. The method according to claim 1 , characterized in that it comprises the steps of- dividing the sub-band into non-uniform sub-band parts as many as number of parts entered via the user interface,- numbering each non-uniform sub-band part sequentially,- making measurement of interference sequentially for each of the numbered non-uniform sub-band parts (50), starting from the smallest numbered non- uniform sub-band part (50) within the coherence time,- comparing each interference measurement value with a threshold value, as a result of the comparison;- if the interference measurement value is greater than the threshold value, making measurement of interference of the non-uniform sub-band part (50) following measured non-uniform sub-band part (50), if the interference measurement value is less than the threshold value, reporting to the base station (10) the interference measurement values preceding the non-uniform sub-band part (50) that measurement interference value- reporting the measurement of interference completion information to the base station (10) when the coherence time is completed.
4. The method according to claim 1 , characterized in that it comprises the steps of- dividing the sub-band (30) into uniform sub-band parts (40) as many as number of parts entered via the user interface,- numbering each uniform sub-band part (40) sequentially,- making measurement of interference sequentially / simultaneously for each of the numbered uniform sub-band parts (40), starting from the smallest numbered uniform sub-band part (40),- comparing the measured interference value of each uniform sub-band part (40) with the threshold value- taking a difference of the interference values of consecutive uniform sub -band parts (40) whose measured interference value is greater than the threshold value- determining a number of band corresponding to the reference band range where the difference is found as a result of matching the difference with the reference band ranges in a memory unit,- dividing the total bandwidth of the differenced uniform sub-band parts (40) into the number of bands determined and creating non-uniform sub-band parts (50) over the whole sub-band (30) region,- making interference measurements for each non uniform sub-band part (50),- comparing the measured interference value of each non uniform sub-band part (50) with the threshold value, as a result of the comparison;- if the interference measurement value is greater than the threshold value, making measurement of interference of the non-uniform sub-band part (50) following measured non-uniform sub-band part (50), if the interference measurement value is less than the threshold value, reporting to the base station (10) the interference measurement values preceding the non-uniform sub-band part (50) that measurement interference value- reporting the measurement of interference completion information to the base station (10) when the coherence time is completed.
5. The method according to claim 1 , characterized by further comprising the step of saving the interference values reported to the base station (10) to the memory unit.
6. The method according to claim 1 , characterized in that the adjustment is made dynamically based on real-time interference measurements.
7. The method according to claim 1 , characterized in that the threshold value is dynamically updated based on historical interference data stored in the memory unit.
8. The method according to claim 1 , characterized by further comprising the step of generating alerts to the user equipment (20) when the interference values exceed predefined thresholds.
Citation Information
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