Cell access method and system for a communication awareness system

Abstract

The application provides a cell access method and system of a communication and sensing system, relates to the technical field of communication and sensing, and comprises the following steps: acquiring first information transmitted by a base station in a preset period, wherein the first information comprises cell selection information, sensing information and system information; judging an operation to be performed based on the first information, wherein the operation to be performed is determined by sensing analysis on data in the first information, and a judgment result is obtained, the judgment result comprising a cell selection operation or a cell reselection operation on a cell to be selected; and selecting a cell to be accessed to the communication and sensing system based on the first information and the judgment result, initiating an access request to the cell to be accessed to the communication and sensing system, and obtaining an access result. The application improves the access performance of the integrated communication and sensing system and avoids the problem of cell access performance loss.

Description

Technical Field

[0001] This invention relates to the field of communication sensing technology, and more specifically, to a cell access method and system for a communication sensing system. Background Technology

[0002] With the development of Integrated Information Sensing and Communication (ISAC) technology, 3GPP has launched a standardization study on ISAC technology for fifth-generation (5G) mobile communication systems.

[0003] Currently, in 5G systems under the 3G Partnership Program, terminals perform cell selection according to the S criterion and cell reselection according to the R criterion. When selecting or reselecting a cell, the terminal does not know whether the cell supports sensing functionality. When a sensing terminal initiates access based on the selected cell, if the selected cell does not support sensing functionality, it may lead to cell access failure or the sensing terminal not receiving timely sensing services. Therefore, existing technologies suffer from performance loss issues in sensing cell access, thus necessitating a cell access method and system for a communication sensing system to address this problem. Summary of the Invention

[0004] The purpose of this invention is to provide a cell access method and system for a communication sensing system to improve the aforementioned problems. To achieve the above objective, the technical solution adopted by this invention is as follows:

[0005] In a first aspect, this application provides a cell access method for a communication sensing system, comprising:

[0006] Acquire first information sent by the base station within a preset period, the first information including cell selection information, sensing information and system information;

[0007] Based on the first information, the operation to be performed is determined, wherein the data in the first information is perceptually analyzed, and then it is determined whether to perform an operation on the cell to be selected, and a judgment result is obtained. The judgment result includes performing a cell selection operation or a cell reselection operation on the cell to be selected.

[0008] Based on the first information and the judgment result, a cell to be accessed by the communication sensing system is selected, an access request is initiated for the cell to be accessed by the communication sensing system, and an access result is obtained.

[0009] Secondly, this application also provides a cell access system for a communication sensing system, comprising:

[0010] The acquisition unit is used to acquire first information sent by the base station within a preset period, the first information including cell selection information, sensing information and system information;

[0011] The judgment unit is used to judge the operation to be performed based on the system information in the first information and obtain the judgment result. The operation to be performed includes performing a cell selection operation or a cell reselection operation.

[0012] The processing unit is used to initiate an access request to the cell corresponding to the operation to be performed based on the first information, and to execute the operation to be performed.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention sends cell selection and reselection information, sensing configuration information, and system information from the base station to the sensing terminal; the sensing terminal then receives the system information and performs cell selection or reselection; wherein, the sensing terminal initiates access from the selected sensing cell, so that the sensing terminal prefers cells that support sensing functions when selecting or reselecting cells, thereby improving the access performance of the integrated communication and sensing system and avoiding the problem of cell access performance loss.

[0015] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the cell access method of the communication sensing system described in this embodiment of the invention;

[0018] Figure 2 This is a schematic diagram of the cell reselection parameter configuration of the communication sensing system described in this embodiment of the invention.

[0019] Figure 3 This is a schematic diagram of the second scheme for configuring the reselection parameters of the sensing cell in the communication sensing system described in this embodiment of the invention.

[0020] Figure 4 This is a schematic diagram illustrating the configuration of the cell reselection parameters of the communication sensing system described in this embodiment of the invention via dedicated signaling.

[0021] Figure 5 This is a schematic diagram of the cell access system structure of the communication sensing system described in this embodiment of the invention;

[0022] The diagram is labeled as follows: 701, Acquisition Unit; 702, Judgment Unit; 703, Processing Unit. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Example 1:

[0026] This embodiment provides a cell access method for a communication sensing system.

[0027] See Figure 1 and Figure 2 The figure shows that the method includes steps S1, S2 and S3.

[0028] Step S1: Obtain the first information sent by the base station within a preset period, the first information including cell selection information, sensing information and system information;

[0029] It is understood that in this step, cell selection information includes the cell's signal strength, load status, access priority, and connection success rate, helping to determine whether the current cell is suitable for access; perception information includes the sensing terminal's support flag, access control information, dwell time, IMS emergency support flag information, and network fault information, providing detailed data on network quality and terminal status for optimizing access decisions; system information includes system frame number, subcarrier spacing configuration, synchronization signal block offset information, system information block 1 (SIB1) configuration, same-frequency reselection information, and cell prohibition flag information, providing synchronization and configuration data for the access process, ensuring the accuracy of access operations and the reasonable allocation of network resources. The SIB1 configuration refers to the configuration of system information block 1, and the priority in this invention refers to the priority order of different cells or frequencies in the cell selection or reselection process. The higher the priority, the more determined the decision order of the terminal device when selecting or reselecting a cell. The priority in this invention is preset.

[0030] Step S2: Determine the operation to be performed based on the first information. The operation is determined by performing perception analysis on the data in the first information to determine whether to perform an operation on the cell to be selected. The determination result includes performing a cell selection operation or a cell reselection operation on the cell to be selected.

[0031] It is understandable that this step, through precise perception and analysis, enables the system to quickly respond to user access requests based on real-time network data, ensuring that the selected operation plan best suits the current network conditions. This effectively improves the overall system performance and user experience, reducing resource waste and service quality degradation caused by unreasonable access decisions. In this step, step S2 includes steps S21, S22, and S23.

[0032] Step S21: If the operation to be performed is a cell selection operation, then determine whether the cell to be selected in the receiving system information has the sensing function, and obtain the first judgment result.

[0033] Understandably, by determining whether a cell possesses sensing capabilities, this step allows the system to make cell selection decisions more intelligently and in real-time. This approach not only enhances the system's adaptability but also improves access quality, avoiding access problems caused by unsuitable network environments, thereby improving the user's communication experience.

[0034] Step S22: If the judgment result is that the cell to be selected has the sensing function, then cell selection is performed based on the first selection condition to obtain the cell to be selected for access;

[0035] Understandably, this step effectively improves the access success rate and reduces user disconnections and service interruptions caused by unstable signal quality or network congestion. Furthermore, by using terminal data for intelligent selection, the system can achieve load balancing, improve network resource utilization efficiency, and optimize the overall access experience.

[0036] Step S23: If the judgment result is that the cell to be selected does not have the sensing function, then cell selection is performed based on the second selection condition to obtain the cell to be selected for access.

[0037] Understandably, this step ensures that even without sensing terminal support, appropriate cell selection can still be performed, providing users with suitable access services. Although sensing terminal data can provide more accurate network status, this step, by selecting based on traditional communication data and rules, can still ensure the rationality of the access cell and avoid problems such as improper selection and access failure, even without a sensing terminal. Therefore, the role of the second selection condition is to fill the information gap that may arise when there is no sensing terminal, ensuring stable system operation and user access quality.

[0038] Step S3: Based on the first information and the judgment result, select the cell to be accessed by the communication sensing system, initiate an access request for the cell to be accessed by the communication sensing system, and obtain the access result.

[0039] It is understandable that this step, by combining the key information from the first step with the preceding selection and judgment of the cell, enables the system to more intelligently and efficiently select a suitable access cell, reducing the risk of access failure and avoiding problems such as poor signal and excessive network load caused by improper selection. The implementation of this step ensures that users can quickly and stably access the communication network, providing a reliable foundation for further sensing and data transmission. In this step, step S3 includes steps S31, S32, and S33.

[0040] Step S31: If the operation to be performed is a cell reselection operation, then determine whether the cell to be reselected in the received system information has a sensing function, and obtain the second judgment result.

[0041] It is understandable that this step, by determining whether the cell to be reselected has sensing capabilities, effectively guides the subsequent reselection decision path, ensuring that cells with sensing capabilities are given priority during the reselection process. This not only improves the accuracy of cell reselection but also ensures that the reselected access cell can better adapt to environmental changes, avoiding network quality degradation or failure to meet user needs due to improper selection. This determination is made by checking whether there is a sensing support flag in the system information.

[0042] Step S32: If the second judgment result is that the cell to be reselected has the sensing function, then cell reselection is performed based on the third selection condition to obtain the cell to be reselected for access.

[0043] It is understandable that this step, by performing cell reselection based on the third selection condition, can make a more reasonable and efficient access selection based on real-time data and environmental changes, thereby improving network reliability, user internet experience, and effective utilization of system resources. In this step, step S32 includes steps S321 and S322.

[0044] Step S321: If the cell to be reselected and the currently selected cell are cells with different system frequencies, then identify whether the system information carries a preset first quality threshold, and whether the sensing terminal stays in the current cell for more than 1 second.

[0045] It is understandable that this judgment process can effectively avoid frequent cell reselection caused by factors such as signal instability and temporary access, thereby improving system stability and user communication experience. By combining the judgment of signal quality threshold and terminal dwell time, the system can make more reasonable cell selection decisions, reduce the negative impact of premature or frequent reselection, improve the utilization of network resources, and optimize the terminal's access performance. The preset first quality threshold is the reference signal reception quality threshold (i.e., threshServingLowQ) for reselection to a low radio access technology (RAT) / frequency.

[0046] Step S3212: If the system information carries a preset first quality threshold and the sensing terminal stays in the current cell for more than 1 second, then determine whether other cells to be reselected meet the preset reselection criteria and obtain the cell reselection result.

[0047] It is understandable that by introducing preset cell reselection criteria in this step, the intelligence and efficiency of cell reselection operations can be ensured. It can flexibly select the optimal cell based on network conditions, terminal needs, and other environmental factors, thereby improving network reliability and communication quality. This process avoids blind reselection, reduces network load increases and frequent handovers caused by erroneous reselection, and improves the stability of the communication system and the connection experience of the terminal. In this step, step S322 includes steps S3221 and S3222.

[0048] Step S3221: If the first cell with a higher priority than the current cell to be reselected meets the first reselection criterion within a preset time period, then the first cell is selected as the cell after reselection. The first cell is the cell with a higher priority than the current cell to be reselected and whose priority is closest to that of the current cell to be reselected. The first reselection criterion is that the cell selection quality value of the 5G inter-system frequency or 6G inter-system frequency of the first cell is greater than the preset second quality threshold, and the perception support flag of the first cell is true.

[0049] Understandably, in this step, the system first compares the priority of the cell to be reselected with other candidate cells, selecting the "first cell" with a priority higher than the current cell and closest to its priority. This selection mechanism aims to ensure that, during the reselection operation, the selected cell meets priority requirements while maintaining a priority as close as possible to the current cell, thus ensuring a balanced allocation of network resources and avoiding excessively frequent or unnecessary handovers. This step effectively optimizes the cell reselection decision-making process, ensuring not only superior signal quality of the selected cell but also avoiding frequent handovers and unsuitable cell access. The cell selection quality value is Squal, and the preset second quality threshold is the Squal threshold for radio access technology (RAT) / frequency reselection with a higher priority than the current serving frequency (i.e., Thresh). X, HighQ ).

[0050] Step S3222: If the first cell with a higher priority than the current cell to be reselected does not meet the first reselection criterion within a preset time period, determine whether the second cell with a higher priority than the first cell within the preset time period meets the second reselection criterion. If the second reselection criterion is met, select the second cell as the reselected cell. The second cell is the cell with a higher priority than the first cell and whose priority is closest to that of the first cell. The second reselection criterion is that the cell selection received level value of the 5G inter-system frequency or 6G inter-system frequency of the second cell is greater than the preset third quality threshold, and the perception support flag of the second cell is true.

[0051] Understandably, within a preset time period, if the first cell with higher priority than the current cell to be reselected fails to meet the first reselection criterion (e.g., insufficient signal quality or other technical conditions not meeting the requirements), the system will proceed to the next step and select a second cell as a backup. This step ensures that when the first cell cannot be selected, the system can further search for a suitable alternative cell based on priority. By introducing a second cell selection mechanism, the system's adaptability and flexibility in the face of different network conditions are enhanced. Even if the first cell does not meet the conditions, the system can still ensure the reliability and stability of cell reselection through the evaluation of the second cell. Through dual verification of signal quality (cell selection received level value) and sensing support flag, it is ensured that the selected cell can support the needs of the sensing terminal while meeting network performance requirements. The cell selection received level value is Srxlev, and the preset third quality threshold is the Srxlev threshold of RAT / frequency reselection with higher priority than the current serving frequency (i.e., Thresh). X, HighP It is understood that step S322 in this process also includes steps S3223 and S3224.

[0052] Step S3223: If a third cell with a priority lower than the current cell to be reselected meets the third reselection criterion within a preset time period, then the third cell is selected as the reselected cell. The third cell is the cell with a priority lower than the current cell to be reselected and whose priority is closest to that of the current cell to be reselected. The third reselection criterion is that the cell selection quality value of the 5G inter-system frequency or 6G inter-system frequency of the third cell is less than a preset first quality threshold, and the cell selection quality value of the 5G inter-system frequency or 6G inter-system frequency of the third cell is greater than a preset fourth quality threshold, and the perception support flag of the third cell is true.

[0053] It is understood that this step describes how, when a third cell with a lower priority than the current cell to be reselected meets the third reselection criterion, the system will select this third cell as the target cell after reselection. This step reflects the strategy that when no higher-priority cell meets the condition, the system will further select a lower-priority cell, ensuring that a suitable cell can still be found for reselection under various conditions. The preset fourth quality threshold is the Squal threshold (i.e., Thresh) for RAT / frequency reselection with a lower priority than the current serving frequency. X, LowQ ).

[0054] Step S3224: If the third cell, whose priority is lower than the current cell to be reselected, does not meet the first reselection criterion within a preset time period, determine whether the fourth cell, whose priority is lower than the third cell, meets the fourth reselection criterion within the preset time period. If the fourth reselection criterion is met, then the fourth cell is selected as the reselected cell. The fourth cell is the cell whose priority is lower than the third cell and whose priority is closest to that of the third cell. The fourth reselection criterion is that the cell selection reception level value of the 5G inter-system frequency or 6G inter-system frequency of the fourth cell is less than a preset fifth quality threshold, and the cell selection reception level value of the 5G inter-system frequency or 6G inter-system frequency of the fourth cell is greater than a preset sixth quality threshold, and the perception support flag of the second cell is true.

[0055] Understandably, this step enhances the system's adaptability and robustness by finely selecting lower-priority cells. When higher-priority cells cannot meet the requirements, the system can select a suitable target from lower-priority cells through a dual screening mechanism of signal quality and sensing support. This not only effectively avoids quality degradation caused by selecting excessively low-priority cells but also improves network stability and terminal experience under low-signal conditions, ensuring the continuous normal operation of the sensing system. The preset fifth quality threshold is Thresh. Serving, LowP The preset sixth quality threshold is Thresh. X, LowP .

[0056] It is understandable that step S32 also includes step S323.

[0057] Step S323: If the cell to be reselected and the currently selected cell are cells with the same system frequency, calculate the Rs of the serving cell's R criterion and the Rn of all neighboring cells that satisfy the S criterion. Sort all cells to be reselected that meet the conditions according to the R criterion and select the cell to be reselected with the highest sequence ranking as the cell to be reselected.

[0058] Understandably, this step calculates the R-criterion for the serving cell and neighboring cells, and then ranks the cells to be reselected based on this criterion. This ensures that the reselection process considers not only signal quality but also multiple factors such as network load. This ranking mechanism allows the system to select the optimal cell for access among multiple eligible cells, thereby improving communication quality and network stability. This technology effectively avoids the communication quality degradation caused by selecting cells with poor signal quality. Especially when multiple cells have similar quality, the ranking method ensures the selection of the optimal access cell, thus optimizing system performance and terminal experience.

[0059] The R criterion refers to calculating the R value for the serving cell and neighboring cells, and then performing cell reselection based on the R value.

[0060] The formula for calculating the R-value of a serving cell is:

[0061] Serving cell R-value (Rs) = Serving cell reference signal received power measurement (

[0062] Qmeas,s) + hysteresis value (Qhyst) - temporary offset (Qoffsettemp)

[0063] The formula for calculating the R-value of a neighboring cell is:

[0064] Neighboring cell R-value (Rn) = Neighboring cell reference signal received power measurement (

[0065] Qmeas,n) - Offset (Qoffset) - Temporary offset (Qoffsettemp)

[0066] Step S33: If the second judgment result is that the cell to be reselected does not have the sensing function, then cell reselection is performed based on the fourth selection condition to obtain the cell to be reselected for access.

[0067] Understandably, this step provides a technical solution for effective cell reselection even when sensing functionality is unavailable. Its main technical effect is enhanced system robustness and adaptability. Even when some cells cannot provide sensing information, the system can still ensure successful terminal access through other selection criteria (such as signal quality and network load). This not only improves system stability but also ensures that access strategies can be adjusted in a timely manner in complex network environments, optimizing communication quality and avoiding impacts on terminal access experience due to a lack of sensing terminals. The fourth selection condition is based on existing cell reselection regulations in 5G systems.

[0068] The cell selection or reselection parameter configuration process in the 5G ISAC system described above includes: First, the base station periodically broadcasts a main information block (MIB). This MIB carries system information, including the system frame number, subcarrier spacing configuration, synchronization signal block subcarrier offset, demodulation reference signal position, physical downlink control channel (SIB1) configuration, cell prohibition flag, and same-frequency reselection information. After receiving the MIB, the terminal stores it and performs identification.

[0069] Then, the base station periodically broadcasts SIB1. Information block 1 carries cell selection information, cell access-related information, connection establishment failure control, system information scheduling information, serving cell common configuration, IMS emergency support flag, eCallOver IMS support flag, UE-timer and constants, unified access control prohibition information, complete recovery identifier, awareness support flag, and other information. After receiving SIB1, the terminal stores SIB1 and performs identification.

[0070] The relevant information elements of the perception support flag in SIB1 are shown in the table below:

[0071]

[0072] The SIB1 signaling in 3GPP TS 38.331 is modified as follows:

[0073] SIB1-vxxxx-IEs ::= SEQUENCE { ......

[0075] nonCriticalExtension SIB1-vyyyy-IEs OPTIONAL

[0076] }

[0077] SIB1-vyyyy-IEs ::= SEQUENCE { ......

[0079] senseSupport ENUMERATED {true} OPTIONAL, -- Need R ......

[0081] nonCriticalExtension SEQUENCE {} OPTIONAL

[0082] }

[0083] Next, the base station sends System Information Block 2 (SIB2). SIB2 carries common information for cell reselection within the same frequency, different frequency, and / or different system. After receiving SIB2, the terminal stores it and analyzes it.

[0084] Subsequently, the base station sends System Information Block 3 (SIB3). SIB3 carries neighbor cell information for co-frequency cell reselection, including a list of co-frequency neighbor cells and their information, with a newly added sensing support flag in the co-frequency neighbor cell information. After receiving SIB3, the terminal stores and analyzes it.

[0085] The relevant information elements of the perception support flag in SIB3 are shown in the table below:

[0086]

[0087] The SIB3 signaling in 3GPP TS 38.331 has been modified as follows:

[0088] IntraFreqNeighCellInfo ::= SEQUENCE { ......

[0090] senseSupport ENUMERATED {true} OPTIONAL, -- Need R

[0091] }

[0092] Subsequently, the base station sends System Information Block 4 (SIB4). SIB4 carries neighbor cell information for inter-frequency cell reselection, including an inter-frequency neighbor cell list and inter-frequency neighbor cell information, with a newly added sensing support flag in the inter-frequency neighbor cell information. After receiving SIB4, the terminal stores and analyzes it.

[0093] The relevant information elements of the newly added sensing support flag in SIB4 inter-frequency neighbor cell information are shown in the table below:

[0094]

[0095] The SIB4 signaling in 3GPP TS 38.331 has been modified as follows:

[0096] InterFreqNeighCellInfo ::= SEQUENCE { ......

[0098] senseSupport ENUMERATED{true} OPTIONAL, -- Need R

[0099] }

[0100] If the base station also needs to configure 4G inter-system cell reselection, the base station sends System Information Block 5 (SIB5). SIB5 carries 4G carrier frequencies and neighboring cell information for 4G inter-system cell reselection, including a 4G carrier frequency list and a 4G cell selection timer. After receiving SIB5, the terminal stores it and processes it.

[0101] In addition, after 3GPP develops the 6G system standard, the 5G system will also need to add 6G inter-system cell reselection related signaling. The base station sends a system information block for 6G inter-system cell reselection, carrying 6G carrier frequency and neighbor cell related information, including a 6G carrier frequency list, a 6G cell selection timer, etc. The terminal receiving the 6G inter-system cell reselection system information block stores and processes it.

[0102] The information elements carried in the 6G inter-system cell reselection system information block and the relevant information elements for the perception support flag are shown in the table below:

[0103]

[0104] The signaling of the new 6G inter-system cell reselection system information block in 3GPP TS 38.331 is as follows:

[0105] SIBxx ::= SEQUENCE {

[0106] carrierFreqList6G CarrierFreqList6G OPTIONAL, -- Need R

[0107] t-Reselection6G T-Reselection,

[0108] t-Reselection6G-SF SpeedStateScaleFactors OPTIONAL, -- Need S

[0109] lateNonCriticalExtension OCTET STRING OPTIONAL,

[0110] }

[0111] CarrierFreqList6G ::= SEQUENCE (SIZE (1..max6G-Carrier)) OF CarrierFreq6G

[0112] CarrierFreq6G ::= SEQUENCE {

[0113] carrierFreq ARFCN-Value6G, <​​​​​​​​​​​

[0118] presenceAntennaPort1 6G-PresenceAntennaPort1,

[0119] cellReselectionPriority CellReselectionPriority OPTIONAL, -- NeedR

[0120] cellReselectionSubPriority CellReselectionSubPriority OPTIONAL, --Need R

[0121] threshX-High ReselectionThreshold,

[0122] threshX-Low ReselectionThreshold,

[0123] q-RxLevMin INTEGER (-70..-22),

[0124] q-QualMin INTEGER (-34..-3),

[0125] p-Max6G INTEGER (-30..33),

[0126] threshX-Q SEQUENCE {

[0127] threshX-HighQ ReselectionThresholdQ,

[0128] threshX-LowQ ReselectionThresholdQ

[0129] } OPTIONAL -- Cond RSRQ

[0130] }

[0131] 6G-FreqNeighCellList ::= SEQUENCE (SIZE (1..maxCell6G)) OF 6G-FreqNeighCellInfo

[0132] 6G-FreqNeighCellInfo ::= SEQUENCE {

[0133] physCellId 6G-PhysCellId,

[0134] senseSupport ENUMERATED {true} OPTIONAL, -- Need R

[0135] 6G-Q-OffsetRange, q-RxLevMinOffsetCell INTEGER (1..8) OPTIONAL, --Need R

[0136] q-QualMinOffsetCell INTEGER (1..8) OPTIONAL -- Need R

[0137] }

[0138] It is understandable that by configuring the cell selection or reselection parameters as described above, the flexibility and reliability of the communication system can be further improved, ensuring that the system can still make intelligent and efficient decisions even when some conditions change or the network status is unstable.

[0139] Example 2:

[0140] like Figure 3 As shown in the figure, this embodiment of the invention provides a schematic diagram of a second scheme for configuring the reselection parameters of the sensing cell in a communication sensing system.

[0141] In this embodiment, the base station sends a system information block containing sensing cell reselection configuration information, carrying a sensing frequency priority list, including downlink carrier frequencies and sensing information. The sensing information includes sensing cell reselection priority, sensing cell reselection sub-priority, and a list of sensing cells.

[0142] The relevant information elements carried by the system information block for sensing cell reselection configuration information are shown in the following table:

[0143]

[0144] The new system information block SIBxxx signaling for sensing cell reselection configuration information added in 3GPP TS 38.331 is as follows:

[0145] SIBxxx ::= SEQUENCE {

[0146] freqPriorityListSensing FreqPriorityListSensing OPTIONAL, -- Need R

[0147] lateNonCriticalExtension OCTET STRING OPTIONAL, ...

[0149] }

[0150] FreqPriorityListSensing ::= SEQUENCE (SIZE (1..maxFreqPlus1)) OFFreqPrioritySensing

[0151] FreqPrioritySensing ::= SEQUENCE {

[0152] dl-ImplicitCarrierFreq INTEGER (0..maxFreq),

[0153] senseInfo SenseInfo OPTIONAL -- Cond Mandatory

[0154] }

[0155] SenseInfo ::= SEQUENCE {

[0156] senseCellReselectionPriority CellReselectionPriority OPTIONAL,-- Need R

[0157] senseCellReselectionSubPriority CellReselectionSubPriorityOPTIONAL, -- Need R

[0158] senseCellListNR CHOICE {

[0159] senseAllowedCellListNR SenseCellListNR,

[0160] senseExcludedCellListNR SenseCellListNR

[0161] } OPTIONAL -- Need R

[0162] }

[0163] SenseCellListNR ::= SEQUENCE (SIZE (1..maxCellSense)) OF PCI-Range

[0164] After receiving the system information block of the sensing cell reselection configuration information, the terminal stores and processes it.

[0165] The terminal uses the following information to determine the priority of the sensed cell reselection:

[0166] System information and / or dedicated signaling provide sensing information and / or dedicated sensing information for each carrier frequency;

[0167] The system information and / or dedicated signaling provide the cell reselection priority for each carrier frequency.

[0168] If the terminal considers a carrier frequency to support sensing, it configures a sensing-dedicated frequency priority list through dedicated signaling. The terminal only considers carrier frequencies in the sensing-dedicated frequency priority list for sensing cell reselection.

[0169] If the terminal considers that a cell on a carrier frequency supports sensing.

[0170] Specifically, for a carrier frequency carried by the system information block of the sensing cell reselection configuration information, if the cell is in the sensing allowed cell list (if sensing information is provided) or the cell is not in the sensing disallowed cell list (if sensing information is provided), or if the sensing information neither configures the sensing allowed cell list nor the sensing disallowed cell list, the terminal obtains the sensing cell reselection priority according to the following rules:

[0171] The frequencies are sorted in order of priority based on the highest sensing cell reselection priority. If a frequency is not configured with a sensing cell reselection priority, the lowest priority value is used.

[0172] Example 3:

[0173] like Figure 4 As shown in the figure, this embodiment of the invention provides a schematic diagram of configuring the cell reselection parameters of a communication sensing system via dedicated signaling.

[0174] In this embodiment, when the base station sends a Radio Resource Control Release (RRCRelease) message to the sensing terminal, it carries a Sensing-Dedicated Frequency Priority List (freqPriorityListDedicatedSensing), with values ​​ranging from [1, maximum number of frequencies (maxFreq)]. The relevant information elements in the RRCRelease message used for the Sensing-Dedicated Cell Reselection Priority Parameters are shown in the table below:

[0175]

[0176] The following new cell reselection information element has been added to the RRRCRelease message in 3GPP TS 38.331:

[0177] FreqPriorityListDedicatedSensing ::= SEQUENCE (SIZE (1.. maxFreq)) OFFreqPriorityDedicatedSensing

[0178] FreqPriorityDedicatedSensing ::= SEQUENCE {

[0179] dl-ExplicitCarrierFreq ARFCN-ValueNR,

[0180] senseInfoDedicated SenseInfoDedicated OPTIONAL -- CondMandatory

[0181] }

[0182] SenseInfoDedicated ::= SEQUENCE {

[0183] senseCellReselectionPriority CellReselectionPriority OPTIONAL,-- Need R

[0184] senseCellReselectionSubPriority CellReselectionSubPriorityOPTIONAL -- Need R

[0185] }

[0186] After receiving the RRCRelease message, the terminal has a dedicated cell reselection priority parameter for sensing and determines the sensing cell reselection priority. Specifically, if the RRCRelease message is configured with freqPriorityListDedicatedSensing, the terminal only considers the frequencies carried by freqPriorityListDedicatedSensing for sensing cell reselection.

[0187] Example 4:

[0188] like Figure 5 As shown, this embodiment provides a cell access system for a communication sensing system. See [link to documentation]. Figure 5 The system includes an acquisition unit 701, a judgment unit 702, and a processing unit 703.

[0189] The acquisition unit 701 is used to acquire first information sent by the base station within a preset period, the first information including cell selection information, sensing information and system information;

[0190] The judgment unit 702 is used to judge the operation to be performed based on the system information in the first information and obtain the judgment result. The operation to be performed includes performing a cell selection operation or a cell reselection operation.

[0191] The processing unit 703 is used to initiate an access request to the cell corresponding to the operation to be performed based on the first information, and to execute the operation to be performed.

[0192] It should be noted that the specific methods by which each module performs operations in the system described in the above embodiments have been described in detail in the embodiments related to the method, and will not be elaborated here.

[0193] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0194] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A cell access method for a communication sensing system, characterized in that, include: Acquire first information sent by the base station within a preset period, the first information including cell selection information, sensing information and system information; Based on the first information, the operation to be performed is determined, wherein the data in the first information is perceptually analyzed, and then it is determined whether to perform an operation on the cell to be selected, and a judgment result is obtained. The judgment result includes performing a cell reselection operation on the cell to be selected. Based on the first information and the judgment result, a cell to be accessed by the communication sensing system is selected, an access request is initiated to the cell to be accessed by the communication sensing system, and the access result is obtained; The cells selected for access to the communication sensing system based on the first information and the judgment result include: If the operation to be performed is determined to be a cell reselection operation, then it is determined whether the cell to be reselected in the received system information supports the sensing function, and a second determination result is obtained. If the second judgment result is that the cell to be reselected supports the sensing function, then cell reselection is performed based on the third selection condition to obtain the cell to be reselected for access; If the second judgment result is that the cell to be reselected does not support the sensing function, then cell reselection is performed based on the fourth selection condition to obtain the cell to be reselected for access. The fourth selection condition is to perform cell reselection according to the R criterion. Wherein, if the second judgment result indicates that the cell to be reselected supports sensing functions, then cell reselection is performed based on the third selection condition, including: If the cell to be reselected and the currently selected cell are cells with different system frequencies, then identify whether the system information carries a preset first quality threshold, and whether the sensing terminal stays in the current cell for more than 1 second. If the system information carries a preset first quality threshold and the sensing terminal stays in the current cell for more than 1 second, then it is determined whether other cells to be reselected meet the preset reselection criteria, and the cell reselection result is obtained. The preset reselection criteria include: If the first cell with a higher priority than the current cell to be reselected meets the first reselection criterion within a preset time period, then the first cell is selected as the cell after reselection. The first cell is the cell with a higher priority than the current cell to be reselected and whose priority is closest to that of the current cell to be reselected. The first reselection criterion is that the cell selection quality value of the 5G inter-system frequency or 6G inter-system frequency of the first cell is greater than the preset second quality threshold, and the perception support flag of the first cell is true. If the first cell with a higher priority than the current cell to be reselected does not meet the first reselection criterion within a preset time period, it is determined whether the second cell with a higher priority than the first cell within the preset time period meets the second reselection criterion. If the second reselection criterion is met, the second cell is selected as the reselected cell. The second cell is the cell with a higher priority than the first cell and whose priority is closest to that of the first cell. The second reselection criterion is that the cell selection received signal level of the second cell at a 5G or 6G inter-system frequency is greater than a preset third quality threshold, and the perception support flag of the second cell is true.

2. The cell access method of the communication sensing system according to claim 1, characterized in that... The preset reselection criteria also include: If a third cell with a lower priority than the current cell to be reselected meets the third reselection criterion within a preset time period, then the third cell is selected as the reselected cell. The third cell is the cell with a lower priority than the current cell to be reselected, and whose priority is closest to that of the current cell to be reselected. The third reselection criterion is that the cell selection quality value of the 5G inter-system frequency or 6G inter-system frequency of the third cell is less than a preset first quality threshold, and the cell selection quality value of the 5G inter-system frequency or 6G inter-system frequency of the third cell is greater than a preset fourth quality threshold, and the perception support flag of the third cell is true. If the third cell, whose priority is lower than the current cell to be reselected, does not meet the first reselection criterion within a preset time period, it is determined whether the fourth cell, whose priority is lower than the third cell, meets the fourth reselection criterion within the preset time period. If the fourth reselection criterion is met, the fourth cell is selected as the reselected cell. The fourth cell is the cell whose priority is lower than the third cell and whose priority is closest to that of the third cell. The fourth reselection criterion is that the cell selection reception level value of the 5G inter-system frequency or 6G inter-system frequency of the fourth cell is less than a preset fifth quality threshold, and the cell selection reception level value of the 5G inter-system frequency or 6G inter-system frequency of the fourth cell is greater than a preset sixth quality threshold, and the perception support flag of the fourth cell is true.

3. The cell access method of the communication sensing system according to claim 1, characterized in that... If the second judgment result indicates that the cell to be reselected has sensing capabilities, then cell reselection is performed based on the third selection condition, which also includes: If the cell to be reselected and the currently selected cell are cells with the same system frequency, then calculate the Rs of the serving cell's R criterion and the Rn of all neighboring cells that satisfy the S criterion. Sort all cells to be reselected that meet the conditions according to the R criterion, and select the cell to be reselected with the highest sequence ranking as the cell to be reselected.

4. The cell access method of the communication sensing system according to claim 1, characterized in that... The system information includes: System frame number information, subcarrier spacing configuration information, synchronization signal block subcarrier offset information, demodulation reference signal position information, physical downlink control channel SIB1 configuration information, cell prohibition flag information, and same-frequency reselection information.

5. The cell access method of the communication sensing system according to claim 1, characterized in that... The perceived information includes: Cell access information, connection establishment failure control information, system information scheduling information, serving cell common configuration information, IMS emergency support flag information, eCall Over IMS support flag information, UE-timer information and constant information, unified access control prohibition information, complete recovery identifier information, and perception support flag information.

6. A cell access system for a communication sensing system, characterized in that, include: The acquisition unit is used to acquire first information sent by the base station within a preset period, the first information including cell selection information, sensing information and system information; The judgment unit is used to judge the operation to be performed based on the system information in the first information and obtain the judgment result, wherein the operation to be performed includes performing a cell reselection operation; The processing unit is configured to initiate an access request to the cell corresponding to the operation to be performed based on the first information, and execute the operation to be performed. The cells selected for access to the communication sensing system based on the first information and the judgment result include: If the operation to be performed is determined to be a cell reselection operation, then it is determined whether the cell to be reselected in the received system information supports the sensing function, and a second determination result is obtained. If the second judgment result is that the cell to be reselected supports the sensing function, then cell reselection is performed based on the third selection condition to obtain the cell to be reselected for access; If the second judgment result is that the cell to be reselected does not support the sensing function, then cell reselection is performed based on the fourth selection condition to obtain the cell to be reselected for access. The fourth selection condition is to perform cell reselection according to the R criterion. Wherein, if the second judgment result indicates that the cell to be reselected supports sensing functions, then cell reselection is performed based on the third selection condition, including: If the cell to be reselected and the currently selected cell are cells with different system frequencies, then identify whether the system information carries a preset first quality threshold, and whether the sensing terminal stays in the current cell for more than 1 second. If the system information carries a preset first quality threshold and the sensing terminal stays in the current cell for more than 1 second, then it is determined whether other cells to be reselected meet the preset reselection criteria, and the cell reselection result is obtained. The preset reselection criteria include: If the first cell with a higher priority than the current cell to be reselected meets the first reselection criterion within a preset time period, then the first cell is selected as the cell after reselection. The first cell is the cell with a higher priority than the current cell to be reselected and whose priority is closest to that of the current cell to be reselected. The first reselection criterion is that the cell selection quality value of the 5G inter-system frequency or 6G inter-system frequency of the first cell is greater than the preset second quality threshold, and the perception support flag of the first cell is true. If the first cell with a higher priority than the current cell to be reselected does not meet the first reselection criterion within a preset time period, it is determined whether the second cell with a higher priority than the first cell within the preset time period meets the second reselection criterion. If the second reselection criterion is met, the second cell is selected as the reselected cell. The second cell is the cell with a higher priority than the first cell and whose priority is closest to that of the first cell. The second reselection criterion is that the cell selection received signal level of the second cell at a 5G or 6G inter-system frequency is greater than a preset third quality threshold, and the perception support flag of the second cell is true.

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