CN116390180A - Cell access method, device, electronic equipment and readable storage medium - Google Patents

Cell access method, device, electronic equipment and readable storage medium Download PDF

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Publication number
CN116390180A
CN116390180A CN202310654612.1A CN202310654612A CN116390180A CN 116390180 A CN116390180 A CN 116390180A CN 202310654612 A CN202310654612 A CN 202310654612A CN 116390180 A CN116390180 A CN 116390180A
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cell
cells
determining
parameter
initial
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CN116390180B (en
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王蕊
赵旭
甘杰
张玉冰
刘晗
李正浩
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State Grid Shandong Electric Power Co Ltd
Beijing Smartchip Microelectronics Technology Co Ltd
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State Grid Shandong Electric Power Co Ltd
Beijing Smartchip Microelectronics Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The disclosure relates to the technical field of communication, in particular to a cell access method, a device, electronic equipment and a readable storage medium, wherein the method comprises the following steps: under the condition that the lightweight equipment accesses an initial cell meeting cell selection criteria, acquiring a first parameter of the initial cell; in response to the first parameter being less than or equal to a first threshold value, determining M cells which meet the cell selection criterion and have the same working frequency point as the working frequency point of the initial cell in other cells except the initial cell; determining a target cell in the initial cell and the M cells, wherein the target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum; and accessing the lightweight equipment into the target cell. So that the RedCap UE can reselect to one of the co-frequency cells to reduce uplink interference to non-RedCap UEs and downlink interference to RedCap UEs.

Description

Cell access method, device, electronic equipment and readable storage medium
Technical Field
The disclosure relates to the technical field of communication, and in particular relates to a cell access method, a cell access device, electronic equipment and a readable storage medium.
Background
The international telecommunications union defines three general categories of application scenarios for the fifth generation mobile communication technology (5th Generation Mobile Communication Technology,5G), namely enhanced mobile broadband, ultra-high reliability low latency communications and mass machine type communications. With the continued deployment and widespread use of 5G, the third generation partnership project (3rd Generation Partnership Project,3GPP) defines lightweight (Reduced Capability, redCap) device types in the 5G r17 phase for further reduction of terminal complexity and cost.
In the early stages of network deployment, operators only partially supported the RedCap device for business reasons, so that the phenomenon of RedCap devices (UEs) and non-RedCap UEs occurred. However, based on the access restriction regulation of the existing 3GPP for the Redap UE, in a certain scenario, for example, cells Cell1 and Cell2 operating at the same frequency point, if Cell1 supports the Redap UE and Cell2 does not support the RedCap UE, the RedCap UE may access Cell1, but because the RedCap UE is at the coverage edge of Cell1, serious uplink interference is caused to non-RedCap UEs in Cell2, and downlink communication of Cell2 may also cause downlink interference to communication between Cell1 and the RedCap UE.
Thus, there is a need for a method for access to a cell by a RedCap UE to avoid the above-mentioned communication problems.
Disclosure of Invention
To solve the problems in the related art, embodiments of the present disclosure provide a cell access method, an apparatus, an electronic device, and a readable storage medium.
In a first aspect, a cell access method is provided in an embodiment of the present disclosure.
Specifically, the method comprises the following steps:
under the condition that the lightweight equipment accesses an initial cell meeting cell selection criteria, acquiring a first parameter of the initial cell, wherein the first parameter of the initial cell is used for indicating the signal quality of a received signal of the initial cell;
in response to the first parameter being less than or equal to a first threshold value, determining M cells which meet the cell selection criterion and have the same working frequency point as that of the initial cell in other cells except the initial cell, wherein M is a positive integer;
determining a target cell in the initial cell and the M cells, wherein the target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum;
and accessing the lightweight equipment into the target cell.
In an implementation manner of the embodiment of the present disclosure, before determining the target cell in the initial cell and the M cells, the method further includes:
Acquiring second parameters of the initial cell and each cell in the M cells, wherein the second parameters are used for indicating the signal quality of signals received by the initial cell;
determining optimal cells in the initial cells and the M cells, wherein the optimal cells are cells corresponding to the second parameters with the largest values in the initial cells and the M cells;
the determining a target cell in the initial cell and the M cells includes:
responsive to determining that the optimal cell supports access to the lightweight device, determining the optimal cell as the target cell; or,
and in response to determining that the optimal cell prohibits access to the lightweight device, determining the target cell from among the initial cell and N cells of the M cells except the optimal cell, wherein N is a positive integer.
In an implementation manner of the embodiment of the present disclosure, before the determining, in response to determining that the optimal cell supports access to the lightweight device, the optimal cell is determined to be the target cell, the method further includes:
acquiring first information of the optimal cell;
acquiring second information of the optimal cell in response to the first information indicating that the lightweight device is allowed to be accessed;
And determining that the optimal cell supports access to the lightweight device in response to the second information including an intra-frequency reselection indication identifier.
In an embodiment of the present disclosure, before determining the target cell in the initial cell and N cells other than the optimal cell in the M cells, the method includes:
acquiring a third parameter of an alternative cell, wherein the alternative cell is a cell corresponding to a second parameter with the largest value in the N cells, and the third parameter is an absolute value of a difference between the second parameter of the alternative cell and the second parameter of the optimal cell;
the determining the target cell among the initial cell and N cells other than the optimal cell among the M cells includes:
in response to determining that the alternative cell supports access to the lightweight device and that the third parameter is greater than or equal to a second threshold value, determining the alternative cell as the target cell; or,
in response to determining that the candidate cell satisfies a preset condition, determining the target cell in other cells than the candidate cell among the N cells, the preset condition including at least one of: and the alternative cell prohibits the access to the lightweight equipment, and the third parameter is smaller than the second threshold value.
In an embodiment of the present disclosure, the determining the target cell in the initial cell and N cells other than the optimal cell in the M cells includes:
according to the second parameters of each cell in the N cells, determining a strong interference cell corresponding to the optimal cell in the N cells;
and determining a cell corresponding to a second parameter with the largest value, which is supported to be accessed into the lightweight equipment, from other cells except the strong interference cell in the N cells as the target cell.
In an embodiment of the present disclosure, before the determining the initial cell and the optimal cell of the M cells, the method further includes:
according to a cell reselection criterion, reselecting and sequencing the initial cell and the M cells;
the determining the optimal cell of the initial cell and the M cells includes:
and determining one cell arranged at the head or the tail of the initial cell and the M cells as the optimal cell.
In a second aspect, a cell access device is provided in an embodiment of the present disclosure.
Specifically, the cell access device includes:
a first acquisition module configured to acquire a first parameter of an initial cell, where the first parameter is used to indicate signal quality of a signal received by the initial cell, in a case where a lightweight device accesses the initial cell that meets a cell selection criterion;
A first determining module configured to determine M cells, which satisfy the cell selection criterion and whose operating frequency points are the same as those of the initial cell, among other cells except the initial cell in response to the first parameter being less than or equal to a first threshold value, M being a positive integer;
the second determining module is configured to determine a target cell in the initial cell and the M cells, the target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum;
a first execution module configured to access the lightweight device to the target cell.
In an implementation manner of the embodiment of the present disclosure, the cell access device further includes:
a second acquisition module configured to acquire a second parameter of each of the M cells and the initial cell, the second parameter being used to indicate a signal quality of a signal received by the initial cell;
a third determining module, configured to determine an optimal cell in the initial cell and the M cells, where the optimal cell is a cell corresponding to a second parameter with a maximum value in the initial cell and the M cells;
The second determining module is specifically configured to determine the optimal cell as the target cell in response to determining that the optimal cell supports access to the lightweight device; or,
and in response to determining that the optimal cell prohibits access to the lightweight device, determining the target cell from among the initial cell and N cells of the M cells except the optimal cell, wherein N is a positive integer.
In an implementation manner of the embodiment of the present disclosure, the cell access device further includes:
a third acquisition module configured to acquire first information of the optimal cell;
a fourth acquisition module configured to acquire second information of the optimal cell in response to the first information indicating permission to access the lightweight device;
a fourth determination module configured to determine that the optimal cell supports access to the lightweight device in response to the second information including an intra-frequency reselection indication identifier.
In an implementation manner of the embodiment of the present disclosure, the cell access device further includes:
a fifth obtaining module, configured to obtain a third parameter of an alternative cell, where the alternative cell is a cell corresponding to a second parameter with a maximum value in the N cells, and the third parameter is an absolute value of a difference between the second parameter of the alternative cell and the second parameter of the optimal cell;
The second determining module is specifically configured to determine the candidate cell as the target cell in response to determining that the candidate cell supports access to the lightweight device and that the third parameter is greater than or equal to a second threshold value; or,
in response to determining that the candidate cell satisfies a preset condition, determining the target cell in other cells than the candidate cell among the N cells, the preset condition including at least one of: and the alternative cell prohibits the access to the lightweight equipment, and the third parameter is smaller than the second threshold value.
In an embodiment of the present disclosure, the second determining module is specifically configured to determine, according to a second parameter of each of the N cells, a strong interference cell corresponding to the optimal cell among the N cells; and determining a cell corresponding to a second parameter with the largest value and supporting access to the lightweight equipment in other cells except the strong interference cell in the N cells as the target cell.
In an implementation manner of the embodiment of the present disclosure, the cell access device further includes:
a second execution module configured to reselect the initial cell and the M cells according to a cell reselection criterion;
The third determining module is specifically configured to determine one cell, which is arranged first or last, of the initial cell and the M cells as the optimal cell.
In a third aspect, an embodiment of the present disclosure provides an electronic device, including a memory and a processor, wherein the memory is configured to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the method according to any one of the first aspect and all possible implementations of the first aspect.
In a fourth aspect, in an embodiment of the present disclosure, there is provided a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement a method as in the first aspect and any of the possible implementations of the first aspect.
According to the technical scheme provided by the embodiment of the disclosure, under the condition that the lightweight equipment is accessed into an initial cell meeting the cell selection criterion, a first parameter of the initial cell is obtained, wherein the first parameter of the initial cell is used for indicating the signal quality of a received signal of the initial cell; in response to the first parameter being less than or equal to a first threshold value, determining M cells which meet the cell selection criterion and have the same working frequency point as that of the initial cell in other cells except the initial cell, wherein M is a positive integer; determining a target cell in the initial cell and the M cells, wherein the target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum; and accessing the lightweight equipment into the target cell. By the scheme, the RedCAP UE can reselect one cell in the same-frequency cells, so that uplink interference to non-RedCAP UE and downlink interference to the RedCAP UE are reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
Other features, objects and advantages of the present disclosure will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings.
Fig. 1 shows a flowchart of a cell access method according to an embodiment of the present disclosure.
Fig. 2 shows one of schematic diagrams of a cell access method according to an embodiment of the present disclosure.
Fig. 3 shows a second schematic diagram of a cell access method according to an embodiment of the disclosure.
Fig. 4 shows a block diagram of a cell access device according to an embodiment of the present disclosure.
Fig. 5 shows a block diagram of an electronic device according to an embodiment of the disclosure.
Fig. 6 shows a schematic diagram of a computer system suitable for use in implementing methods according to embodiments of the present disclosure.
Detailed Description
Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. In addition, for the sake of clarity, portions irrelevant to description of the exemplary embodiments are omitted in the drawings.
In this disclosure, it should be understood that terms such as "comprises" or "comprising," etc., are intended to indicate the presence of features, numbers, steps, acts, components, portions, or combinations thereof disclosed in this specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, acts, components, portions, or combinations thereof are present or added.
In addition, it should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In the present disclosure, if an operation of acquiring user information or user data or an operation of presenting user information or user data to another person is referred to, the operations are all operations authorized, confirmed, or actively selected by the user.
As mentioned above, the international telecommunications union defines three major classes of application scenarios for the fifth generation mobile communication technology (5th Generation Mobile Communication Technology,5G), namely enhanced mobile broadband, ultra-high reliability low latency communications and mass machine class communications. With the continued deployment and widespread use of 5G, the third generation partnership project (3rd Generation Partnership Project,3GPP) defines lightweight (Reduced Capability, redCap) device types in the 5G r17 phase for further reduction of terminal complexity and cost.
In the early stages of network deployment, operators only partially supported the RedCap device for business reasons, so that the phenomenon of RedCap devices (UEs) and non-RedCap UEs occurred. However, based on the access restriction regulation of the existing 3GPP for the Redap UE, in a certain scenario, for example, cells Cell1 and Cell2 operating at the same frequency point, if Cell1 supports the Redap UE and Cell2 does not support the RedCap UE, the RedCap UE may access Cell1, but because the RedCap UE is at the coverage edge of Cell1, serious uplink interference is caused to non-RedCap UEs in Cell2, and downlink communication of Cell2 may also cause downlink interference to communication between Cell1 and the RedCap UE.
Thus, there is a need for a method for access to a cell by a RedCap UE to avoid the above-mentioned communication problems.
Based on the technical defects, the embodiment of the disclosure provides a cell access method, in which, when a lightweight device accesses an initial cell meeting a cell selection criterion, a first parameter of the initial cell can be obtained, where the first parameter of the initial cell is used to indicate signal quality of a signal received by the initial cell; in response to the first parameter being less than or equal to a first threshold value, determining M cells which meet the cell selection criterion and have the same working frequency point as that of the initial cell in other cells except the initial cell, wherein M is a positive integer; determining a target cell in the initial cell and the M cells, wherein the target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum; and accessing the lightweight equipment into the target cell. By the scheme, the RedCAP UE can reselect one cell in the same-frequency cells, so that uplink interference to non-RedCAP UE and downlink interference to the RedCAP UE are reduced.
Fig. 1 shows a flowchart of a cell access method according to an embodiment of the present disclosure. As shown in fig. 1, the cell access method includes the following S101-S104:
In S101, in case the lightweight device accesses an initial cell that meets cell selection criteria, a first parameter of the initial cell is acquired.
Wherein the first parameter of the initial cell is used to indicate the signal quality of the signal received by the initial cell.
In S102, M cells that satisfy the cell selection criterion and whose operating frequency point is the same as that of the initial cell are determined among other cells than the initial cell in response to the first parameter being less than or equal to a first threshold value.
Wherein M is a positive integer.
In S103, a target cell is determined among the initial cell and the M cells.
The target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum.
In S104, the lightweight device is connected to the target cell.
In an implementation manner of the present disclosure, the method for cell access provided in the embodiments of the present disclosure may be applied to a terminal device, a server, or other possible devices that perform cell access.
In an implementation manner of the present disclosure, the lightweight device is Reduced Capability User Equipment, which may be simply referred to as a RedCap UE.
In an embodiment of the present disclosure, the cell selection criterion refers to a criterion that, in a cell selection process, the terminal device needs to measure a cell to be selected in order to perform channel quality evaluation, and determine whether the cell meets a camping criterion, which may also be referred to as an S criterion. When the channel quality of a certain cell meets the S criterion, it can be selected as a camping cell. The specific content of the S criteria is as follows:
Srxlev>0；
Srxlev =Qrxlevmeas– (Qrxlevmin + Qrxlevminoffset) – Pcompensation
wherein Srxlev is a cell selection S value in dB; qrxlevmeas is the measured current serving cell received power; qrxlevmin is the minimum receiving power of a serving cell, the parameter is read from a system broadcast message, and a certain arithmetic conversion is needed after the reading of a general terminal; qrxlevminoffset is the offset value of the minimum received power of the serving cell; the Pcompensation compensation value can be calculated by a formula Max (PEMAX-PUMAX, 0), where PEMAX is the maximum transmission power allowed by the terminal equipment in the cell, and is sent by a system broadcast message, and PUMAX is the maximum uplink transmission power determined by the capability of the terminal equipment.
In one embodiment of the present disclosure, the initial cell may be understood as a cell selected to camp on following cell selection criteria after the RedCap UE is powered on.
In an embodiment of the present disclosure, the first parameter may be understood as Srxlev in the cell selection criterion described above. And determining whether to start the on-channel cell measurement by comparing the first parameter with the first threshold value, namely, the cell reselection related to the embodiment of the disclosure is on-channel cell reselection.
In an embodiment of the present disclosure, the first threshold may be set at the factory of the device or may be set by user-definition. Of course, in a specific application, modifications may be made according to the actual needs of the user.
In an embodiment of the present disclosure, in the determining M cells in the foregoing S102 that satisfy the cell selection criterion and have the same operating frequency point as the operating frequency point of the initial cell in other cells except the initial cell, two possible implementation manners may specifically include the following (1) and (2):
(1) Determining a plurality of cells satisfying the cell selection criterion among other cells than the initial cell; and selecting cells with the same working frequency point as the working frequency point of the initial cell from the cells to obtain the M cells.
(2) Determining a plurality of cells satisfying the cell selection criterion among other cells than the initial cell; and selecting some cells with stronger (for example, larger reference signal receiving power) from the cells with the same working frequency point as the working frequency point of the initial cell in the cells as the M cells.
In an embodiment of the present disclosure, for the step S103 described above, that is, determining the target cell among the initial cell and the M cells, may include two possible cases as follows (a) and (b):
(a) The target cell is the initial cell.
(b) The target cell is one of the M cells.
Further, in view of the two cases (a) and (b), the step of accessing the lightweight device to the target cell in S104 may specifically include two possible implementations of S1041 and S1042:
mode 1, the lightweight device is allowed to continue to camp on the initial cell.
Mode 2, reselecting the lightweight device from the initial cell to one of the M cells.
The embodiment of the disclosure provides a cell access method, which can acquire a first parameter of an initial cell when a lightweight device accesses the initial cell meeting a cell selection criterion, wherein the first parameter of the initial cell is used for indicating signal quality of a received signal of the initial cell; in response to the first parameter being less than or equal to a first threshold value, determining M cells which meet the cell selection criterion and have the same working frequency point as the working frequency point of the initial cell in other cells except the initial cell; determining a target cell in the initial cell and the M cells, wherein the target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum; and accessing the lightweight equipment into the target cell. By the scheme, the RedCAP UE can reselect one cell in the same-frequency cells, so that uplink interference to non-RedCAP UE and downlink interference to the RedCAP UE are reduced.
Optionally, in an implementation manner of an embodiment of the present disclosure, before the step of determining a target cell in the initial cell and the M cells, that is, before S103, the cell access method provided in the embodiment of the present disclosure may further include the following S105 and S106; accordingly, the above S103 may be specifically realized by S1031 or S1032 described below.
In S105, second parameters of the initial cell and each of the M cells are acquired.
Wherein the second parameter is used to indicate a signal quality of the initial cell received signal.
In S106, an optimal cell of the initial cell and the M cells is determined.
The optimal cell is a cell corresponding to the initial cell and a second parameter with the largest value in the M cells.
In S1031, in response to determining that the optimal cell supports access to the lightweight device, the optimal cell is determined to be the target cell.
In S1032, in response to determining that the optimal cell prohibits access to the lightweight device, the target cell is determined among the initial cell and N cells other than the optimal cell among the M cells.
Wherein N is a positive integer.
In an implementation of the present disclosure, the second parameter may be a reference signal received power (Reference Signal Receiving Power, RSRP). Of course, the second parameter may also be other possible parameters indicating signal quality.
Optionally, in an implementation manner of an embodiment of the present disclosure, before S106 above, the cell access method provided by the embodiment of the present disclosure may further include S107 below; accordingly, the above S106 may be specifically realized by the following S1061.
In S107, the initial cell and the M cells are reordered according to a cell reselection criterion.
In S1061, the initial cell and one cell, which is the first or last cell among the M cells, are determined as the optimal cell.
In an embodiment of the present disclosure, the cell reselection criterion may be referred to as an R criterion, and the specific content of the R criterion is as follows:
Rs= Qmeas_s + QhystsRn = Qmeas_n – Qoffsets_n
wherein:
qmeas_s is the signal quality measurement value received by the serving cell, namely the RSCP of the P-CCPCH;
qmeas_n is the measurement of the received signal quality of the neighboring cell;
qhysts is cell reselection hysteresis;
qoffsets_n is the difference in received signal quality requirements for two cells.
In an embodiment of the disclosure, the S107 specifically refers to: and comparing second parameters of any two cells in the initial cell and the M cells according to a cell reselection criterion so as to sort the initial cell and the M cells in a descending order or an ascending order.
Further, with respect to the above S1061, when the initial cell and the M cells are ordered in descending order, one cell, which is first ranked, of the initial cell and the M cells may be determined as the optimal cell; when the initial cell and the M cells are sorted in ascending order, one cell of the initial cell and the M cells, which is arranged at the end, may be determined as the optimal cell.
In an embodiment of the present disclosure, if the value of the second parameter of the initial cell is the largest among the initial cell and the M cells, the initial cell is the optimal cell; and if the value of the second parameter of one cell in the M cells is maximum, the one cell is the optimal cell.
Illustratively, as shown in fig. 2, three cells operating at the same frequency point include Cell1, cell2, and Cell3. Let the initial Cell be Cell1, the R values of 3 cells be R1, R2 and R3, respectively, and satisfy R2> R3> R1, i.e. Cell2 is the optimal Cell in the same frequency Cell list, and Cell3 is the suboptimal Cell. If the optimal Cell2 supports access to the lightweight device, then Cell2 may be determined as the target Cell; if the optimal Cell2 prohibits access to the lightweight device, then the target Cell may be determined in Cell1 and Cell3.
In this embodiment, the second parameter of each of the initial cell and the M cells may be acquired, and an optimal cell of the initial cell and the M cells may be determined, the optimal cell may be determined as the target cell in response to determining that the optimal cell supports access to the lightweight device, or the target cell may be determined among N cells other than the optimal cell of the initial cell and the M cells in response to determining that the optimal cell prohibits access to the lightweight device. In this way, by determining an optimal cell and determining whether it supports access to the lightweight device, it is decided whether to reselect the lightweight device to the optimal cell or to a cell other than the optimal cell among the initial cell and the M cells.
Optionally, in an implementation manner of an embodiment of the present disclosure, before the step of determining the optimal cell as the target cell in response to determining that the optimal cell supports access to the lightweight device, the cell access method provided by the embodiment of the present disclosure may further include the following steps:
acquiring first information of the optimal cell;
acquiring second information of the optimal cell in response to the first information indicating that the lightweight device is allowed to be accessed;
And determining that the optimal cell supports access to the lightweight device in response to the second information including an intra-frequency reselection indication identifier.
In an embodiment of the present disclosure, the first information may be understood as a master information block (Master Information Block, MIB). If the field Cellbarred in the MIB of the optimal cell is set to not barred, it indicates that the optimal cell allows access to the lightweight device.
In an embodiment of the present disclosure, the second information may be understood as a system information block (system information block, SIB 1); wherein SIB1 may carry some cell selection information. The intra-frequency reselection indication identifier (Intra Frequency Reselection Indicator, IFRI) is used for indicating the lightweight device co-frequency reselection related configuration information. If the SIB1 of the optimal cell comprises a specific field IFRI, determining that the optimal cell supports access to the lightweight equipment.
It should be understood that the access limitation of the existing 3GPP for the RedCap UE specifies that, when MIB information of the optimal cell cannot be read normally, the RedCap UE considers that other cells on the same frequency can be reselected; when the MIB information of the optimal cell can be read normally, if the field Cellbarred in the MIB is barred, indicating that the cell is forbidden to be accessed to the RedCAP UE, whether other cells on the same frequency can be reselected or not, and continuing to read the field IFRI in the SIB1 of the optimal cell; if the field Cellbarred in the MIB is not barred, continuously reading SIB1 information, and judging whether the optimal cell supports access of the RedCAP UE.
Further, if the RedCap UE can normally acquire SIB1 information and the SIB1 has an IFRI field, it indicates that the cell supports access to the RedCap UE. If there is no IFRI field in SIB1 or SIB1 information is not obtained normally, the RedCAP UE can consider the IFRI field as allowed, i.e. can reselect to other cells on the same frequency.
It should be noted that the above embodiments are only exemplified by determining whether the optimal cell supports the access to the lightweight device, and of course, the above implementation steps may be referred to for other co-frequency cells to determine whether one cell supports the access to the lightweight device.
In this embodiment, the first information of the optimal cell may be acquired, and in response to the first information indicating that access to the lightweight device is allowed, the second information of the optimal cell may be acquired, and in response to the second information including an intra-frequency reselection indication identifier, it is determined that the optimal cell supports access to the lightweight device. Therefore, whether the optimal cell supports access to the lightweight equipment or not can be conveniently judged according to the first information and the second information of the optimal cell.
Optionally, in an implementation manner of an embodiment of the present disclosure, before the step of determining the target cell in the N cells except the optimal cell in the initial cell and the M cells, that is, before the step of S1032, the cell access method provided in the embodiment of the present disclosure may further include the following steps:
And acquiring a third parameter of the alternative cell.
The candidate cells are the cells corresponding to the second parameter with the largest value in the N cells, and the third parameter is the absolute value of the difference between the second parameter of the candidate cells and the second parameter of the optimal cell.
Further, after obtaining the third parameter of the candidate cell, it may be determined whether the third parameter is greater than or equal to a second threshold value; thereafter, the following step (c) or step (d) may be performed.
Step (c) determines the alternative cell as the target cell in response to determining that the alternative cell supports access to the lightweight device and that the third parameter is greater than or equal to a second threshold value.
Step (d) is to determine the target cell among the other cells than the candidate cell among the N cells in response to determining that the candidate cell satisfies a preset condition.
Wherein the preset conditions include at least one of: and the alternative cell prohibits the access to the lightweight equipment, and the third parameter is smaller than the second threshold value.
In an embodiment of the present disclosure, the candidate cell may be a second best cell of the initial cell and the M cells, that is, the second parameter of the second best cell is the largest except for the second parameter of the optimal cell.
In an embodiment of the disclosure, the second threshold value may be set at the time of shipment of the lightweight device or may be user-defined. Of course, the user may modify it according to the actual use.
Illustratively, the second threshold value is denoted by r_diffrence_threshold. Referring to fig. 2, three cells operating at the same frequency point include Cell1, cell2 and Cell3, and the MIB information field of each Cell is cellBarred, and the SIB1 information of Cell1 and Cell3 has an IFRI field, and SIB1 of Cell2 does not have an IFRI field. Assuming that the initial Cell is Cell1, the R values of the 3 cells are R1, R2 and R3 respectively, and R2> R3> R1 is satisfied, that is, cell2 is the optimal Cell in the same-frequency Cell list and does not support access to lightweight equipment, and Cell3 is the suboptimal Cell.
One possible scenario, in the case where Cell3 (i.e., the candidate Cell) supports access to the RedCap UE, if R2-R3> r_diffrence_threshold, indicates that the RedCap UE may reselect Cell3 as a target Cell, i.e., the RedCap UE to the Cell3 Cell if it resides in Cell3, causes uplink interference to a non-RedCap terminal residing in Cell2 Cell, or is weakly interfered by downlink interference of Cell2 Cell.
Another possible scenario, in the case where Cell3 (i.e., the candidate Cell) supports access to the RedCap UE, if R2-R3< r_diffrence_threshold, indicates that the RedCap UE may still reside in Cell1 if it resides in Cell3, causes uplink interference to non-RedCap terminals residing in Cell2 cells, or is strongly interfered by downlink interference of Cell2 cells.
If the RSRP of the candidate cell is smaller than the RSRP of the optimal cell, that is, the third parameter of the candidate cell is smaller than the second threshold value, it is indicated that the candidate cell is not suitable as the serving cell of the RedCap UE, and uplink interference of the RedCap UE to non-RedCap UE and downlink interference of other cells to the RedCap UE may occur. In order to avoid such interference, if the RSRP difference between the candidate cell and the optimal cell is greater than or equal to the second threshold value, the candidate cell and the optimal cell may be considered to be weak interference with each other, so that access of the RedCap UE to an unsuitable cell may be avoided.
In addition, in the step (d) of determining the target cell in the other cells than the candidate cell in the N cells, the step of determining whether the candidate cell can be the target cell may be specifically referred to in the above embodiment.
In this embodiment, a third parameter of an alternative cell may be acquired, and the alternative cell may be determined as the target cell in response to determining that the alternative cell supports access to the lightweight device and that the third parameter is greater than or equal to a second threshold value, or the target cell may be determined among other cells than the alternative cell among the N cells in response to determining that the alternative cell satisfies a preset condition. If the suboptimal cell supports the RedCap UE, the received RSRP of the cell and the received RSRP of the optimal cell are compared, if the difference between the two is greater than a threshold value, the access of the RedCap UE is allowed, otherwise, the access of the RedCap UE is refused, and then the next neighbor cell is judged in turn until a proper cell can be reselected, otherwise, the RedCap UE stays in the initial cell.
Optionally, in an implementation manner of an embodiment of the present disclosure, the step of determining the target cell in the initial cell and N cells other than the optimal cell in the M cells may include the following implementation steps:
and determining the strong interference cell corresponding to the optimal cell in the N cells according to the second parameter of each cell in the N cells.
And determining a cell corresponding to a second parameter with the largest value, which is supported to be accessed into the lightweight equipment, from other cells except the strong interference cell in the N cells as the target cell.
In an embodiment of the present disclosure, determining, in the N cells, a strong interference cell corresponding to the optimal cell according to the second parameter of each cell in the N cells may specifically include: and firstly, arranging the N cells in a descending order according to a second parameter of each cell in the N cells, so that a cell which is arranged in front of the N cells can be used as a strong interference cell corresponding to the optimal cell.
In an embodiment of the present disclosure, the number of strong interference cells may be set according to a specific scenario, for example, the number of strong interference cells is 6.
Illustratively, the N cells are arranged in a descending order to obtain a schematic diagram as shown in fig. 3, a Cell is an optimal Cell, the first 6 cells around the Cell are strong interference cells thereof, and other cells are weak interference cells, so that a target Cell can be selected from the weak interference cells.
The cells arranged in front of the N cells are strong interference cells corresponding to the optimal cell, and the other cells except the strong interference cells in the N cells are weak interference cells corresponding to the optimal cell.
In this embodiment, according to the second parameter of each cell in the N cells, a strong interference cell corresponding to the optimal cell may be determined in the N cells, and a cell corresponding to the second parameter with the largest value and supporting access to the lightweight device in other cells except the strong interference cell in the N cells may be determined as the target cell, so that the strong interference cell of the optimal cell may be removed from the reselection cell list, so as to avoid reselection of the RedCap UE to the strong interference cell of the optimal cell.
Fig. 4 shows a block diagram of a cell access device according to an embodiment of the present disclosure. The apparatus may be implemented as part or all of an electronic device by software, hardware, or a combination of both.
As shown in fig. 4, the cell access device 200 may include a first acquisition module 201, a first determination module 202, a second determination module 203, and a first execution module 204.
The first obtaining module may be configured to obtain, in a case where the lightweight device accesses an initial cell that meets a cell selection criterion, a first parameter of the initial cell, where the first parameter of the initial cell is used to indicate a signal quality of a signal received by the initial cell. The first determining module may be configured to determine M cells that satisfy the cell selection criterion and have the same operating frequency point as the operating frequency point of the initial cell, M being a positive integer, among cells other than the initial cell in response to the first parameter being less than or equal to a first threshold value. The second determining module may be configured to determine a target cell from the initial cell and the M cells, where the target cell supports access to the lightweight device, and uplink and downlink interference corresponding to the target cell is minimum. The first execution module may be configured to access the lightweight device to the target cell.
In an implementation manner of the embodiment of the present disclosure, the cell access device may further include:
a second acquisition module, which may be configured to acquire a second parameter of the initial cell and each of the M cells, the second parameter being used to indicate a signal quality of a signal received by the initial cell;
the third determining module may be configured to determine an optimal cell of the initial cell and the M cells, where the optimal cell is a cell corresponding to a second parameter with a maximum value in the initial cell and the M cells;
the second determining module may be specifically configured to determine the optimal cell as the target cell in response to determining that the optimal cell supports access to the lightweight device; or,
and in response to determining that the optimal cell prohibits access to the lightweight device, determining the target cell from among the initial cell and N cells of the M cells except the optimal cell, wherein N is a positive integer.
In an implementation manner of the embodiment of the present disclosure, the cell access device further includes:
a third acquisition module, which may be configured to acquire first information of the optimal cell;
A fourth acquisition module may be configured to acquire second information of the optimal cell in response to the first information indicating permission to access the lightweight device;
the fourth determining module may be configured to determine that the optimal cell supports access to the lightweight device in response to the second information including an intra-frequency reselection indication identifier.
In an implementation manner of the embodiment of the present disclosure, the cell access device further includes:
the fifth obtaining module may be configured to obtain a third parameter of an alternative cell, where the alternative cell is a cell corresponding to a second parameter with a maximum value in the N cells, and the third parameter is an absolute value of a difference between the second parameter of the alternative cell and the second parameter of the optimal cell;
the second determining module may be specifically configured to determine the candidate cell as the target cell in response to determining that the candidate cell supports access to the lightweight device and that the third parameter is greater than or equal to a second threshold value; or,
in response to determining that the candidate cell satisfies a preset condition, determining the target cell in other cells than the candidate cell among the N cells, the preset condition including at least one of: and the alternative cell prohibits the access to the lightweight equipment, and the third parameter is smaller than the second threshold value.
In an embodiment of the present disclosure, the second determining module may be specifically configured to determine, according to a second parameter of each of the N cells, a strong interference cell corresponding to the optimal cell among the N cells; and determining a cell corresponding to a second parameter with the largest value and supporting access to the lightweight equipment in other cells except the strong interference cell in the N cells as the target cell.
In an implementation manner of the embodiment of the present disclosure, the cell access device further includes:
a second execution module, which may be configured to reselect the initial cell and the M cells according to a cell reselection criterion;
the third determining module may be specifically configured to determine one of the initial cell and the M cells, which is ranked first or last, as the optimal cell.
The embodiment of the disclosure provides a cell access device, which can acquire a first parameter of an initial cell when a lightweight device accesses the initial cell meeting a cell selection criterion, wherein the first parameter of the initial cell is used for indicating signal quality of a received signal of the initial cell; in response to the first parameter being less than or equal to a first threshold value, determining M cells which meet the cell selection criterion and have the same working frequency point as the working frequency point of the initial cell in other cells except the initial cell; determining a target cell in the initial cell and the M cells, wherein the target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum; and accessing the lightweight equipment into the target cell. By the scheme, the RedCAP UE can reselect one cell in the same-frequency cells, so that uplink interference to non-RedCAP UE and downlink interference to the RedCAP UE are reduced.
The present disclosure also discloses an electronic device, and fig. 5 shows a block diagram of the electronic device according to an embodiment of the present disclosure.
As shown in fig. 5, the electronic device includes a memory and a processor, wherein the memory is configured to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement a method in accordance with an embodiment of the present disclosure.
Fig. 6 shows a schematic diagram of a computer system suitable for use in implementing methods according to embodiments of the present disclosure.
As shown in fig. 6, the computer system includes a processing unit that can execute the various methods in the above embodiments according to a program stored in a Read Only Memory (ROM) or a program loaded from a storage section into a Random Access Memory (RAM). In the RAM, various programs and data required for the operation of the computer system are also stored. The processing unit, ROM and RAM are connected to each other by a bus. An input/output (I/O) interface is also connected to the bus.
The following components are connected to the I/O interface: an input section including a keyboard, a mouse, etc.; an output section including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), etc., and a speaker, etc.; a storage section including a hard disk or the like; and a communication section including a network interface card such as a LAN card, a modem, and the like. The communication section performs a communication process via a network such as the internet. The drives are also connected to the I/O interfaces as needed. Removable media such as magnetic disks, optical disks, magneto-optical disks, semiconductor memories, and the like are mounted on the drive as needed so that a computer program read therefrom is mounted into the storage section as needed. The processing unit may be implemented as a processing unit such as CPU, GPU, TPU, FPGA, NPU.
In particular, according to embodiments of the present disclosure, the methods described above may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program comprising program code for performing the method described above. In such embodiments, the computer program may be downloaded and installed from a network via a communication portion, and/or installed from a removable medium.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units or modules referred to in the embodiments of the present disclosure may be implemented in software or in programmable hardware. The units or modules described may also be provided in a processor, the names of which in some cases do not constitute a limitation of the unit or module itself.
As another aspect, the present disclosure also provides a computer-readable storage medium, which may be a computer-readable storage medium included in the electronic device or the computer system in the above-described embodiments; or may be a computer-readable storage medium, alone, that is not assembled into a device. The computer-readable storage medium stores one or more programs for use by one or more processors in performing the methods described in the present disclosure.
The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention referred to in this disclosure is not limited to the specific combination of features described above, but encompasses other embodiments in which any combination of features described above or their equivalents is contemplated without departing from the inventive concepts described. Such as those described above, are mutually substituted with the technical features having similar functions disclosed in the present disclosure (but not limited thereto).

Claims (14)

1. A method of cell access, the method comprising:
under the condition that the lightweight equipment accesses an initial cell meeting cell selection criteria, acquiring a first parameter of the initial cell, wherein the first parameter of the initial cell is used for indicating the signal quality of a received signal of the initial cell;
in response to the first parameter being less than or equal to a first threshold value, determining M cells which meet the cell selection criterion and have the same working frequency point as that of the initial cell in other cells except the initial cell, wherein M is a positive integer;
determining a target cell in the initial cell and the M cells, wherein the target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum;
and accessing the lightweight equipment into the target cell.
2. The method of claim 1, wherein prior to determining a target cell in the initial cell and the M cells, the method further comprises:
acquiring second parameters of the initial cell and each cell in the M cells, wherein the second parameters are used for indicating the signal quality of signals received by the initial cell;
Determining optimal cells in the initial cells and the M cells, wherein the optimal cells are cells corresponding to the second parameters with the largest values in the initial cells and the M cells;
the determining a target cell in the initial cell and the M cells includes:
responsive to determining that the optimal cell supports access to the lightweight device, determining the optimal cell as the target cell; or,
and in response to determining that the optimal cell prohibits access to the lightweight device, determining the target cell from among the initial cell and N cells of the M cells except the optimal cell, wherein N is a positive integer.
3. The method of claim 2, wherein, in response to determining that the optimal cell supports access to the lightweight device, prior to determining the optimal cell as the target cell, the method further comprises:
acquiring first information of the optimal cell;
acquiring second information of the optimal cell in response to the first information indicating that the lightweight device is allowed to be accessed;
and determining that the optimal cell supports access to the lightweight device in response to the second information including an intra-frequency reselection indication identifier.
4. The method according to claim 2, wherein before the target cell is determined in the initial cell and N cells of the M cells other than the optimal cell, the method comprises:
acquiring a third parameter of an alternative cell, wherein the alternative cell is a cell corresponding to a second parameter with the largest value in the N cells, and the third parameter is an absolute value of a difference between the second parameter of the alternative cell and the second parameter of the optimal cell;
the determining the target cell among the initial cell and N cells other than the optimal cell among the M cells includes:
in response to determining that the alternative cell supports access to the lightweight device and that the third parameter is greater than or equal to a second threshold value, determining the alternative cell as the target cell; or,
in response to determining that the candidate cell satisfies a preset condition, determining the target cell in other cells than the candidate cell among the N cells, the preset condition including at least one of: and the alternative cell prohibits the access to the lightweight equipment, and the third parameter is smaller than the second threshold value.
5. The method of claim 2, wherein the determining the target cell among the initial cell and N cells of the M cells other than the optimal cell comprises:
according to the second parameters of each cell in the N cells, determining a strong interference cell corresponding to the optimal cell in the N cells;
and determining a cell corresponding to a second parameter with the largest value, which is supported to be accessed into the lightweight equipment, from other cells except the strong interference cell in the N cells as the target cell.
6. The method of claim 2, wherein prior to said determining the optimal cell of the initial cell and the M cells, the method further comprises:
according to a cell reselection criterion, reselecting and sequencing the initial cell and the M cells;
the determining the optimal cell of the initial cell and the M cells includes:
and determining one cell arranged at the head or the tail of the initial cell and the M cells as the optimal cell.
7. A cell access device, the cell access device comprising:
a first acquisition module configured to acquire a first parameter of an initial cell, where the first parameter is used to indicate signal quality of a signal received by the initial cell, in a case where a lightweight device accesses the initial cell that meets a cell selection criterion;
A first determining module configured to determine M cells, which satisfy the cell selection criterion and whose operating frequency points are the same as those of the initial cell, among other cells except the initial cell in response to the first parameter being less than or equal to a first threshold value, M being a positive integer;
the second determining module is configured to determine a target cell in the initial cell and the M cells, the target cell supports access to the lightweight equipment, and uplink and downlink interference corresponding to the target cell is minimum;
a first execution module configured to access the lightweight device to the target cell.
8. The apparatus of claim 7, wherein the cell access apparatus further comprises:
a second acquisition module configured to acquire a second parameter of each of the M cells and the initial cell, the second parameter being used to indicate a signal quality of a signal received by the initial cell;
a third determining module, configured to determine an optimal cell in the initial cell and the M cells, where the optimal cell is a cell corresponding to a second parameter with a maximum value in the initial cell and the M cells;
The second determining module is specifically configured to determine the optimal cell as the target cell in response to determining that the optimal cell supports access to the lightweight device; or,
and in response to determining that the optimal cell prohibits access to the lightweight device, determining the target cell from among the initial cell and N cells of the M cells except the optimal cell, wherein N is a positive integer.
9. The apparatus of claim 8, wherein the cell access apparatus further comprises:
a third acquisition module configured to acquire first information of the optimal cell;
a fourth acquisition module configured to acquire second information of the optimal cell in response to the first information indicating permission to access the lightweight device;
a fourth determination module configured to determine that the optimal cell supports access to the lightweight device in response to the second information including an intra-frequency reselection indication identifier.
10. The apparatus of claim 8, wherein the cell access apparatus further comprises:
a fifth obtaining module, configured to obtain a third parameter of an alternative cell, where the alternative cell is a cell corresponding to a second parameter with a maximum value in the N cells, and the third parameter is an absolute value of a difference between the second parameter of the alternative cell and the second parameter of the optimal cell;
The second determining module is specifically configured to determine the candidate cell as the target cell in response to determining that the candidate cell supports access to the lightweight device and that the third parameter is greater than or equal to a second threshold value; or,
in response to determining that the candidate cell satisfies a preset condition, determining the target cell in other cells than the candidate cell among the N cells, the preset condition including at least one of: and the alternative cell prohibits the access to the lightweight equipment, and the third parameter is smaller than the second threshold value.
11. The apparatus according to claim 8, wherein the second determining module is specifically configured to determine, among the N cells, a strong interference cell corresponding to the optimal cell according to a second parameter of each of the N cells; and determining a cell corresponding to a second parameter with the largest value and supporting access to the lightweight equipment in other cells except the strong interference cell in the N cells as the target cell.
12. The apparatus of claim 8, wherein the cell access apparatus further comprises:
A second execution module configured to reselect the initial cell and the M cells according to a cell reselection criterion;
the third determining module is specifically configured to determine one cell, which is arranged first or last, of the initial cell and the M cells as the optimal cell.
13. An electronic device comprising a memory and a processor; wherein the memory is for storing one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the method steps of any of claims 1 to 6.
14. A computer readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the method steps of any of claims 1 to 6.
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