Anchor cell selection method and device

Abstract

The present invention provides a method and device for selecting an anchor cell. The method comprises: determining the relative load weight of the cell to be evaluated based on the load information of the cell to be evaluated, the load information of the first-level neighboring area of ​​the cell to be evaluated, and the load information of the second-level neighboring area of ​​the cell to be evaluated; determining the mobility weight of the cell to be evaluated based on the switching information from the cell to be evaluated to the first-level neighboring area and / or the second-level neighboring area; determining the relative coverage weight of the cell to be evaluated based on the average level value of the sampling points of the cell to be evaluated, the average level value of the sampling points of the first-level neighboring area, and the average level value of the sampling points of the second-level neighboring area; determining the residence priority of the cell to be evaluated based on the relative load weight, the mobility weight, and the relative coverage weight, thereby determining the anchor cell. The method and device for selecting an anchor cell provided by the present invention ensure the stability of terminal access and the refined residence of the terminal by calculating the residence priority of the cell to be evaluated.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to a method and device for selecting an anchor cell. Background Art

[0002] In the existing NSA (Non-Standalone) network, the anchor cell selection and residency strategy is to manually set the priority of the anchor cell according to the frequency, and then set the corresponding measurement event threshold to achieve anchor cell selection and residency.

[0003] The anchor point priority in the existing method can only be divided according to the frequency, and for the cells within the frequency, the switching threshold of the resident anchor point can only be determined by measuring the RSRP (Reference Signal Receiving Power) level of the UE (User Equipment, also known as the terminal). When there are sudden changes such as the load or alarm of the anchor point, it is bound to have an impact on the performance of the anchor cell. However, according to the existing technology, the resident priority of the anchor point cannot be effectively changed in time, and there is a lag in the selection based on the pre-set measurement event threshold. In addition, the existing technology only focuses on the current UE access and cannot guarantee good accessibility during the subsequent UE movement. That is, if the UE only briefly accesses the anchor cell, the subsequent switching, change and release of mobility changes cannot guarantee a stable UE 5G experience perception.

[0004] Therefore, it is of great significance to propose a method that can reasonably select and reside in anchor cells by setting the priority of anchor cells, so that the selection of anchor cells can provide real-time stability for terminal access and connection stability for terminal mobility. Summary of the Invention

[0005] The present invention provides a method and device for selecting an anchor cell, which are used to solve the technical problem in the prior art that the selection of the anchor cell cannot provide real-time stability for the access of the terminal and cannot provide connection stability for the movement of the terminal.

[0006] In a first aspect, the present invention provides a method for selecting an anchor cell, comprising:

[0007] Determine the relative load weight of the cell to be evaluated based on the load information of the cell to be evaluated, the load information of the first-level neighboring cells of the cell to be evaluated, and the load information of the second-level neighboring cells of the cell to be evaluated;

[0008] Determine the mobility weight of the cell to be evaluated based on handover information from the cell to be evaluated to the primary neighboring cell and / or the secondary neighboring cell;

[0009] Determine the relative coverage weight of the cell to be evaluated based on the average level value of the sampling points of the cell to be evaluated, the average level value of the sampling points of the first-level neighboring area, and the average level value of the sampling points of the second-level neighboring area;

[0010] Determine the residency priority of the cell to be evaluated based on the relative load weight, mobility weight, and relative coverage weight;

[0011] An anchor cell is determined from the cells to be evaluated according to the residency priority of the cells to be evaluated.

[0012] In one embodiment, the load information of the cell to be evaluated includes: a physical resource block (PRB) utilization rate or a physical downlink control channel (PDCCH) utilization rate of the cell to be evaluated, a proportion of guaranteed bit rate (GRB) users in the cell to be evaluated, and a proportion of non-standalone network users in the cell to be evaluated;

[0013] The load information of the first-level neighboring cell includes the PRB utilization rate or PDCCH utilization rate of the first-level neighboring cell;

[0014] The load information of the secondary neighboring cell includes the PRB utilization rate or PDCCH utilization rate of the secondary neighboring cell.

[0015] In one embodiment, the handover information from the cell to be evaluated to the first-level neighboring cell includes: the number of anchor neighboring cells of the first-level neighboring cell, the total number of 4G and 5G neighboring cells of the first-level neighboring cell, and the handover success rate of the terminal from the cell to be evaluated to the first-level neighboring cell;

[0016] The handover information from the cell to be evaluated to the secondary neighboring cell includes: the number of anchor neighboring cells of the secondary neighboring cell, the total number of 4G and 5G neighboring cells of the secondary neighboring cell, and the handover success rate of the terminal from the primary neighboring cell to the secondary neighboring cell.

[0017] In one embodiment, the average level value of the sampling points of the cell to be evaluated includes the weighted average level value of all sampling points of the cell to be evaluated;

[0018] The average level value of the sampling points in the first-level neighboring area includes the weighted average level values ​​of all sampling points in the first-level neighboring area;

[0019] The average level value of the sampling points in the secondary neighboring area includes the weighted average level values ​​of all sampling points in the secondary neighboring area.

[0020] In one embodiment, the residency priority is a ratio of the product of the mobility weight and the relative coverage weight to the relative load weight.

[0021] In one embodiment, determining the anchor cell from the cells to be evaluated according to the residency priority of each cell to be evaluated further includes:

[0022] For a single-anchor terminal, the anchor cell that meets the current measurement conditions and has the highest residency priority is determined as the priority residency anchor point;

[0023] For dual-anchor point terminals, the co-sited cell that meets the current measurement conditions and has the highest residency priority is determined as the priority residency anchor point group.

[0024] In one embodiment, the method further includes: periodically determining the residency priority of the cells to be evaluated, and determining an anchor cell from the cells to be evaluated according to the residency priority of each cell to be evaluated.

[0025] In a second aspect, the present invention further provides a device for selecting an anchor cell, comprising:

[0026] A load determination module, configured to determine a relative load weight of the cell to be evaluated based on load information of the cell to be evaluated, load information of a primary neighboring cell of the cell to be evaluated, and load information of a secondary neighboring cell of the cell to be evaluated;

[0027] A mobility determination module, configured to determine a mobility weight of a cell to be evaluated based on handover information from the cell to be evaluated to a primary neighboring cell and / or a secondary neighboring cell;

[0028] A coverage determination module is used to determine the relative coverage weight of the cell to be evaluated based on the average level value of the sampling points of the cell to be evaluated, the average level value of the sampling points of the first-level neighboring area, and the average level value of the sampling points of the second-level neighboring area;

[0029] A priority determination module, configured to determine the residency priority of the cell to be evaluated based on the relative load weight, the mobility weight, and the relative coverage weight;

[0030] The selection module is used to determine an anchor cell from the cells to be evaluated according to the residency priority of each cell to be evaluated.

[0031] In a third aspect, the present invention further provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the above-mentioned steps of the anchor cell selection method when executing the computer program.

[0032] In a fourth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which implements the steps of any of the above-mentioned anchor cell selection methods when executed by a processor.

[0033] The anchor cell selection method, device, electronic device, and storage medium provided by the present invention collect load information and average level values ​​of sampling points between the cell to be evaluated and its primary and secondary neighboring cells, taking into account the impact of load and coverage area level on anchor cell retention, thereby providing real-time stability for terminal access. Furthermore, by collecting handover information from the cell to be evaluated to primary and / or secondary neighboring cells, the impact of terminal mobility and handover on connection stability is taken into account, ensuring good accessibility during terminal mobility and providing connection stability for terminal mobility. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic diagram of the flow of the method for selecting an anchor cell provided by the present invention;

[0036] Figure 2 A schematic diagram of a flow chart of a method for selecting an anchor cell according to the present invention;

[0037] Figure 3 A schematic diagram of the structure of an apparatus for applying the method for selecting an anchor cell provided by the present invention;

[0038] Figure 4 A schematic diagram of the structure of the device for selecting an anchor cell provided by the present invention;

[0039] Figure 5 This is a schematic structural diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] Figure 1 This is a flow chart of the anchor cell selection method provided by the present invention. Figure 1 The anchor cell selection method provided by the present invention may include:

[0042] S110, determining a relative load weight of the cell to be evaluated based on load information of the cell to be evaluated, load information of a primary neighboring cell of the cell to be evaluated, and load information of a secondary neighboring cell of the cell to be evaluated;

[0043] S120. Determine a mobility weight of the cell to be evaluated based on handover information from the cell to be evaluated to a primary neighboring cell and / or a secondary neighboring cell.

[0044] S130, determining a relative coverage weight of the cell to be evaluated based on the average level value of the sampling points of the cell to be evaluated, the average level value of the sampling points of the first-level neighboring cells, and the average level value of the sampling points of the second-level neighboring cells;

[0045] S140. Determine the residency priority of the cell to be evaluated based on the relative load weight, the mobility weight, and the relative coverage weight;

[0046] S150: Determine an anchor cell from the cells to be evaluated according to the residency priority of the cells to be evaluated.

[0047] The anchor cell selection method provided by the present invention may be performed by an electronic device, a component of an electronic device, an integrated circuit, or a chip. The electronic device may be a mobile electronic device or a non-mobile electronic device. For example, the mobile electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. The non-mobile electronic device may be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine (ATM), or a self-service machine, etc., and the present invention does not specifically limit this.

[0048] The following takes the method for selecting an anchor cell provided by the present invention executed by a computer as an example to describe the technical solution of the present invention in detail.

[0049] It should be noted that the first-level neighboring area of ​​the cell to be evaluated is a cell that has a neighboring area relationship with the cell to be evaluated, and the second-level neighboring area of ​​the cell to be evaluated is a cell that has a neighboring area relationship with the first-level neighboring area of ​​the cell to be evaluated.

[0050] In step S110, the load information of the cell to be evaluated, the load information of the first-level neighboring cells of the cell to be evaluated, and the load information of the second-level neighboring cells of the cell to be evaluated are collected in real time. By calculating the load information, the relative load weight of the cell to be evaluated relative to its first-level and second-level neighboring cells is determined.

[0051] It is understandable that the greater the relative load weight of the cell to be evaluated relative to its primary and secondary neighboring cells, the worse the user terminal's stay effect will be compared to other cells. Selecting a cell with a smaller relative load weight can provide more stable stay for the terminal's access.

[0052] In step S120, the mobility weight of the anchor cell to be evaluated is obtained by collecting handover information from the cell to be evaluated to the surrounding primary neighboring cells, the cell to be evaluated to the surrounding secondary neighboring cells, and the cell to be evaluated to the surrounding primary and secondary neighboring cells within a certain period of time.

[0053] It can be understood that the higher the mobility weight of the anchor cell to be evaluated, the higher the handover success rate of the terminal between the neighboring cells, which means that the area composed of the cell to be evaluated and its first and second level neighboring cells forms a more stable mobile connection area within a certain period of time.

[0054] In step S130, the relative coverage weight of the cell to be evaluated is determined by calculating the average level value of the sampling points of the cell to be evaluated, the average level value of the sampling points of the first-level neighboring areas of the cell to be evaluated, and the average level value of the sampling points of the second-level neighboring areas of the cell to be evaluated.

[0055] It is understandable that if the average level in the area of ​​the cell to be evaluated is larger, it means that its coverage relative to other cells in the area is better and the access stability is higher.

[0056] In step S140 , the residency priority of the cell to be evaluated is determined according to the relative load weight determined in step S110 , the mobility weight determined in step S120 , and the relative coverage weight determined in step S130 .

[0057] It can be understood that, if the mobility stability weight and relative coverage weight of the cell to be evaluated are greater and the relative load weight is smaller, the residency priority of the cell to be evaluated is higher.

[0058] In step S150, the relative load weight information from step S110, the mobility weight information from step S120, and the relative coverage weight information from step S130 are collected for all cells to be evaluated in the area within a specified period of time. The residency priority is calculated according to step S140 to obtain the residency priority of all cells to be evaluated in the area. Based on the residency priority of each cell to be evaluated, an anchor cell is determined from among the cells to be evaluated.

[0059] Optionally, the residency priorities of all cells to be evaluated in the area are calculated and sorted from high to low to obtain a residency priority list:

[0060] WL={w1,w2……w n} (1)

[0061] Where WL is the residency priority list, w1, w2...wn are the residency priority calculation results of n cells to be evaluated in the area.

[0062] It can be understood that the residency strategy of the anchor neighboring cell is that the eNB terminal calculates and sends a residency priority table based on the collected information, and selects the anchor cell with a high priority as the priority residency anchor according to the residency priority list.

[0063] The anchor cell selection method provided by the present invention collects load information and average level values ​​of sampling points between the cell to be evaluated and its primary and secondary neighboring cells, taking into account the impact of load and coverage area level on anchor cell retention, thereby providing real-time stability for terminal access. Furthermore, by collecting handover information from the cell to be evaluated to primary and / or secondary neighboring cells, the method considers the impact of terminal mobility and handover on connection stability, ensuring good accessibility during terminal mobility and providing connection stability for terminal mobility.

[0064] At the same time, the relevant analysis indicators involved in the anchor cell selection method provided by the present invention, such as switching, user transfer status, and cell load, can be directly obtained from the network element monitoring and maintenance system OMCR and related signaling, without involving any modification to the network or UE, and the implementation method is simple.

[0065] In one embodiment, the load information of the cell to be evaluated includes: the PRB (Physical Resource Block) utilization rate or PDCCH (Physical Downlink Control Channel) utilization rate of the cell to be evaluated, the proportion of GBR (Guaranteed Bit Rate) users, and the proportion of NSA users in the cell to be evaluated; the load information of the first-level neighboring area of ​​the cell to be evaluated includes the PRB utilization rate or PDCCH utilization rate of the first-level neighboring area of ​​the cell to be evaluated; the load information of the second-level neighboring area of ​​the cell to be evaluated includes the PRB utilization rate or PDCCH utilization rate of the second-level neighboring area of ​​the cell to be evaluated.

[0066] Optionally, the specific calculation formula of the relative load weight can be expressed as:

[0067]

[0068] Among them, F i represents the relative load weight of the cell i to be evaluated; f i , f j , f kg are the load conditions of cells i, j, and k to be evaluated, respectively, and their load conditions are determined by PRB utilization or PDCCH utilization; i represents the proportion of GBR users in the cell i to be evaluated, r i represents the proportion of NSA users in the cell i to be evaluated; j∈neighbour(i) indicates that the cell j to be evaluated is the first-level neighbor of the cell i to be evaluated, and k∈neighbour(j) indicates that the cell k to be evaluated is the first-level neighbor of the cell j to be evaluated, that is, the cell k to be evaluated is the second-level neighbor of the cell i to be evaluated.

[0069] Understandably, F i Represents the relative load weight of the cell i under evaluation within the area formed by its first-level and second-level neighboring cells within a certain period of time. It measures the cell's resident stability within a certain period of time and indicates the relative load of the cell i under evaluation within this area. The greater the load of the cell i under evaluation and the more NSA and GBR users it contains, the greater its relative load weight. For user terminal devices, the resident effect is worse compared to other cells, and the impact on co-site users after resident is greater. Conversely, the smaller the load of the cell i under evaluation and the fewer NSA and GBR users it contains, the smaller its relative load weight. For user terminal devices, the resident effect is better compared to other cells, and the impact on co-site users after resident is smaller.

[0070] The anchor cell selection method provided by the present invention collects the load of the first-level and second-level neighboring cells of the cell to be evaluated and the number of NSA users and GBR users of the cell to be evaluated in real time, considers the impact of the load, the number of NSA users and GBR users on the anchor cell residence, and provides stable residence for the terminal in the anchor cell by preferentially selecting the anchor cell with a relatively small load weight, while reducing the impact on the same-station users after the residence.

[0071] In one embodiment, the handover information from the cell to be evaluated to the first-level neighboring area includes: the number of anchor neighboring areas of the first-level neighboring area, the total number of 4G and 5G neighboring areas of the first-level neighboring area, and the handover success rate of the terminal from the cell to be evaluated to the first-level neighboring area; the handover information from the cell to be evaluated to the second-level neighboring area includes: the number of anchor neighboring areas of the second-level neighboring area, the total number of 4G and 5G neighboring areas of the second-level neighboring area, and the handover success rate of the terminal from the first-level neighboring area to the second-level neighboring area.

[0072] Optionally, the specific calculation formula (3) of the mobility weight can be expressed as:

[0073]

[0074] Among them, U i represents the mobility stability weight of the cell to be evaluated; m i , m j , mk Respectively represent the number of anchor neighboring cells of the cells to be evaluated i, j, and k; n i , n j , n k Respectively represent the total number of 4G and 5G neighboring cells of the cells i, j, and k to be evaluated; P ij , P jk They represent the handover success rates of non-standalone networking terminals from the to-be-evaluated cell i to the to-be-evaluated cell j, and from the to-be-evaluated cell j to the to-be-evaluated cell k, respectively; j∈meighbour(i) indicates that the to-be-evaluated cell j is a first-level neighbor of the to-be-evaluated cell i, and k∈neighbour(j) indicates that the to-be-evaluated cell k is a first-level neighbor of the to-be-evaluated cell j, that is, the to-be-evaluated cell k is a second-level neighbor of the to-be-evaluated cell i.

[0075] It can be understood that the mobility stability weight of the cell i to be evaluated represents the connection stability of the cell i to be evaluated, that is, the higher the proportion of anchor neighboring cells in the first-level neighboring area j and the second-level neighboring area k of the cell i to be evaluated, and the higher the transfer success rate of the NSA terminal occurring between each neighboring area, it means that the area composed of the cell to be evaluated and its first- and second-level neighboring areas has formed a more stable mobility connection area within a certain period of time.

[0076] The anchor cell selection method provided by the present invention collects handover information from the cell to be evaluated to the primary neighboring cell and / or the secondary neighboring cell, considers the connection stability during terminal movement handover, and selects a cell with high connection stability as the anchor cell. After the UE subsequently moves from the anchor cell, the stability of the residence ratio can still be guaranteed to the greatest extent.

[0077] In one embodiment, the average level value of the sampling points of the cell to be evaluated includes the weighted average level value of all sampling points of the cell to be evaluated; the average level value of the sampling points of the first-level neighboring area includes the weighted average level value of all sampling points of the first-level neighboring area; and the average level value of the sampling points of the second-level neighboring area includes the weighted average level value of all sampling points of the second-level neighboring area.

[0078] Optionally, the specific calculation formula of the relative coverage weight can be expressed as:

[0079]

[0080] Among them, R i Indicates the relative coverage weight of the evaluated cell; rs i ,rs j ,rs kare the weighted average level values ​​of all sampling points of the cells i, j, and k to be evaluated, respectively. j∈neighbour(i) indicates that the cell j to be evaluated is the first-level anchor neighbor of the cell i to be evaluated, and k∈neighbour(j) indicates that the cell k to be evaluated is the first-level anchor neighbor of the cell j to be evaluated, that is, the cell k to be evaluated is the second-level neighbor of the cell i to be evaluated.

[0081] Understandably, R i It represents the relative level weight of the cell to be evaluated within the area consisting of its primary and secondary neighboring cells. This area includes the cell signal to be evaluated that can be measured by the UE. The larger the average level within the cell to be evaluated, the better its coverage relative to other cells in the area and the higher the access stability.

[0082] The anchor cell selection method provided by the present invention ensures basic access stability by selecting a cell with a relatively higher coverage level in a continuous coverage area formed by the anchor cell, its primary neighboring cells, and its secondary neighboring cells.

[0083] In one embodiment, the residency priority is a ratio of the product of the mobility weight and the relative coverage weight to the relative load weight.

[0084] Optionally, a specific calculation formula for the residency priority of the cell to be evaluated can be expressed as:

[0085]

[0086] Among them, W i Indicates the residency priority of the cell to be evaluated, U i represents the mobility stability weight of the cell i to be evaluated, R i represents the relative coverage weight of the evaluated cell i, F i Represents the relative load weight of the cell i to be evaluated.

[0087] It can be understood that the residency priority W of the cell to be evaluated is i It is inversely proportional to the relative load weight of cell i and directly proportional to the mobility stability weight and relative coverage weight of cell i. The larger the mobility stability weight and relative coverage weight of cell i, and the smaller the relative load weight, the higher the residency priority of the cell.

[0088] The anchor cell selection method provided by the present invention determines the residency priority as the ratio of the product of the mobility weight and the relative coverage weight to the relative load weight. Based on the residency priority of each cell to be evaluated, an anchor cell is determined from each cell to be evaluated. This method considers the impact of load and coverage area level on anchor residency, providing real-time stability for terminal access. It also considers the impact of terminal mobility and handover on connection stability, ensuring good accessibility during terminal mobility and providing connection stability for terminal mobility.

[0089] In one embodiment, determining the anchor cell from each cell to be evaluated based on the residency priority of each cell to be evaluated further includes: for a single-anchor terminal, determining the anchor cell that meets the current measurement conditions and has the highest residency priority as the priority residency anchor point; for a dual-anchor terminal, determining the co-station cell that meets the current measurement conditions and has the highest residency priority as the priority residency anchor point group.

[0090] Optionally, the current measurement condition refers to the base station measurement threshold, which is determined based on the RSRP level. Based on the current measurement threshold, different retention priority determination strategies are adopted for single-anchor and dual-anchor cells, depending on the type of anchor cell. For single-anchor terminals, the anchor cell that meets the current measurement conditions and has the highest retention priority is determined as the priority retention anchor point. For dual-anchor terminals, the co-sited cell that meets the current measurement conditions and has the highest retention priority is determined as the priority retention anchor point group.

[0091] The anchor cell selection method provided by the present invention completes the resident selection of single-anchor and multi-anchor cells based on current measurement conditions and a resident priority list, enabling terminals of different anchor types to select the corresponding type for efficient and normal communication.

[0092] In one embodiment, the method for selecting an anchor cell further includes: periodically determining the residency priority of the cells to be evaluated, and determining the anchor cell from the cells to be evaluated according to the residency priority of each cell to be evaluated.

[0093] Optionally, as new UEs continue to join, the residency priorities of all cells to be evaluated in the area are periodically calculated, the residency priority list is updated in real time, and the anchor cell with a high priority is selected as the priority residency anchor according to the latest residency priority list in real time.

[0094] The anchor cell selection method provided by the present invention periodically calculates the residency priority of the cell to be evaluated. As the number of resident UEs increases, the relative weights of high-priority anchor cells or cell groups will change, and the residency priority list will be adjusted in real time, thereby achieving automatic residency balancing.

[0095] The following is a flowchart of a method for selecting an anchor cell provided by the present invention as an example to illustrate the technical solution provided by the present invention:

[0096] In step S210, the number of neighboring cells of the cell to be evaluated, the first-level neighboring cells of the cell to be evaluated, the second-level neighboring cells of the cell to be evaluated, and the NSA terminal handover status within a certain period of time are counted;

[0097] In step S220, statistics are collected on the load and sampling point levels of the number of neighboring cells within a certain period of time, including the number of NSA terminals, 4G users, and GBR users in the cell, among the cell's first-level neighboring cells and second-level neighboring cells.

[0098] In step S230, based on step S220, the relative load of the cell to be evaluated relative to its first and second level neighboring cells within a certain period of time is calculated;

[0099] In step S240, based on step S210, the mobility stability weight of the cell to be evaluated is calculated;

[0100] In step S250, based on step S220, the relative coverage weight of the cell to be evaluated is calculated;

[0101] In step S260, the anchor point residency priority of the cell to be evaluated is calculated and sorted to obtain a residency priority list. Based on the residency priority list, residency selection is completed for single-anchor and multi-anchor cells, and the cell load is fed back to S220 in real time to adjust the residency priority.

[0102] The anchor cell selection method provided by the present invention considers the impact of load and coverage area level on anchor point residency by collecting load information and average level values ​​of sampling points between the cell to be evaluated and its primary and secondary neighboring cells, as well as the number of NSA terminals, 4G users, and GBR users in the cell, thereby providing real-time stability for terminal access. Furthermore, by collecting handover information from the cell to be evaluated to primary and / or secondary neighboring cells, the method considers the impact of terminal mobility and connection stability during handover, ensuring good accessibility during terminal mobility and providing connection stability for terminal mobility.

[0103] The following uses a schematic diagram of a device structure for applying the anchor cell selection method provided by the present invention as an example to illustrate the technical solution provided by the present invention:

[0104] like Figure 3 As shown, the device may include:

[0105] The load information collector 310 is used to collect the load of the primary and secondary neighboring cells of the anchor cell to be evaluated, and the number of NSA and GBR users of the anchor cell to be evaluated in real time;

[0106] Neighborhood information collector 320, used to collect in real time the number of NSA anchor points, handover relations, and number of neighboring cells in the primary and secondary neighboring cells of the anchor cell to be evaluated;

[0107] The sampling information collector 330 is used to collect the number and level information of sampling points in the primary and secondary neighboring cells of the anchor cell to be evaluated in real time;

[0108] The relative load calculator 340 is used to calculate the relative load weight of the anchor cell to be evaluated relative to its neighboring cells based on the collected load, number of GBR users and other information;

[0109] A mobility stability calculator 350 is configured to calculate the mobility connection stability of the anchor cell to be evaluated relative to its neighboring cells based on the collected neighboring cell information;

[0110] The relative coverage calculator 360 is used to calculate the relative coverage of the anchor cell to be evaluated within the coverage area formed by its primary and secondary neighboring cells;

[0111] The resident priority calculator 370 is configured to generate a resident priority table based on the real-time resident priorities of the anchor cells to be evaluated and to sort all the anchor cells to be evaluated.

[0112] The anchor cell selection device provided by the present invention collects load information and average level values ​​of sampling points between the cell to be evaluated and its primary and secondary neighboring cells, taking into account the impact of load, number of NSA users, number of GBR users, and coverage area level on anchor cell retention, thereby providing real-time stability for terminal access. Furthermore, by collecting handover information from the cell to be evaluated to primary and / or secondary neighboring cells, the device considers the impact of terminal mobility and handover on connection stability, ensuring good accessibility during terminal mobility and providing connection stability for terminal mobility.

[0113] The present invention further provides a device for selecting an anchor cell, which can correspond to the method for selecting an anchor cell described above.

[0114] Figure 4 A schematic diagram of the structure of the device for selecting an anchor cell provided by the present invention is shown in FIG. Figure 4 As shown, the device includes:

[0115] A load determination module 410 is configured to determine a relative load weight of the cell to be evaluated based on the load information of the cell to be evaluated, the load information of the primary neighboring cells of the cell to be evaluated, and the load information of the secondary neighboring cells of the cell to be evaluated;

[0116] The mobility determination module 420 is configured to determine the mobility weight of the cell to be evaluated based on the handover information from the cell to be evaluated to the primary neighboring cell and / or the secondary neighboring cell;

[0117] The coverage determination module 430 is configured to determine the relative coverage weight of the cell to be evaluated based on the average level value of the sampling points of the cell to be evaluated, the average level value of the sampling points of the first-level neighboring cells, and the average level value of the sampling points of the second-level neighboring cells;

[0118] The priority determination module 440 is configured to determine the residency priority of the cell to be evaluated based on the relative load weight, the mobility weight, and the relative coverage weight;

[0119] The selection module 450 is configured to determine an anchor cell from the cells to be evaluated according to the residency priority of the cells to be evaluated.

[0120] The anchor cell selection device provided by the present invention collects load information and average level values ​​of sampling points between the cell to be evaluated and its primary and secondary neighboring cells, taking into account the impact of load and coverage area level on anchor point retention, thereby providing real-time stability for terminal access. Furthermore, by collecting handover information from the cell to be evaluated to primary and / or secondary neighboring cells, the device considers the impact of terminal mobility and handover on connection stability, ensuring good accessibility during terminal mobility and providing connection stability for terminal mobility.

[0121] In one embodiment, the load determination module 410 is specifically configured to:

[0122] The load information of the cell to be evaluated includes: the utilization rate of the physical resource blocks (PRBs) or physical downlink control channels (PDCCHs) of the cell to be evaluated, the proportion of GRB users in the cell to be evaluated, and the proportion of non-standalone network users in the cell to be evaluated;

[0123] Determining the load information of the first-level neighboring cell includes the PRB utilization rate or PDCCH utilization rate of the first-level neighboring cell;

[0124] Determining the load information of the secondary neighboring cell includes a PRB utilization rate or a PDCCH utilization rate of the secondary neighboring cell.

[0125] In one embodiment, the mobility determination module 420 is specifically configured to:

[0126] Determine the handover information from the cell to be evaluated to the first-level neighboring cell, including: the number of anchor neighboring cells of the first-level neighboring cell, the total number of 4G and 5G neighboring cells of the first-level neighboring cell, and the handover success rate of the terminal from the cell to be evaluated to the first-level neighboring cell;

[0127] The handover information from the cell to be evaluated to the secondary neighboring area includes: the number of anchor neighboring areas of the secondary neighboring area, the total number of 4G and 5G neighboring areas of the secondary neighboring area, and the handover success rate of the terminal from the primary neighboring area to the secondary neighboring area.

[0128] In one embodiment, the coverage determination module 430 is specifically configured to:

[0129] Determining the average level value of the sampling points of the cell to be evaluated includes the weighted average level value of all sampling points of the cell to be evaluated;

[0130] Determining the average level value of the sampling points in the first-level neighboring area includes the weighted average level value of all sampling points in the first-level neighboring area;

[0131] Determining the average level value of the sampling points in the secondary neighboring area includes the weighted average level values ​​of all sampling points in the secondary neighboring area.

[0132] In one embodiment, the priority determination module 440 is specifically configured to:

[0133] The residency priority is determined as the ratio of the product of the mobility weight and the relative coverage weight to the relative load weight.

[0134] In one embodiment, the selection module 450 is specifically configured to:

[0135] For a single-anchor terminal, the anchor cell that meets the current measurement conditions and has the highest residency priority is determined as the priority residency anchor point;

[0136] For dual-anchor point terminals, the co-sited cell that meets the current measurement conditions and has the highest residency priority is determined as the priority residency anchor point group.

[0137] In one embodiment, the selection module 450 is further configured to:

[0138] The residency priorities of the cells to be evaluated are periodically determined, and an anchor cell is determined from the cells to be evaluated according to the residency priorities of the cells to be evaluated.

[0139] The present invention also provides an electronic device, such as Figure 5 As shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530 and a communication bus 540, wherein the processor 510, the communication interface 520, and the memory 530 communicate with each other through the communication bus 540. The processor 510 can call the logic instructions in the memory 530 to execute the steps of the switching method from the 5G network to the 4G network, for example, including:

[0140] Determine the relative load weight of the cell to be evaluated based on the load information of the cell to be evaluated, the load information of the first-level neighboring cells of the cell to be evaluated, and the load information of the second-level neighboring cells of the cell to be evaluated;

[0141] Determine the mobility weight of the cell to be evaluated based on handover information from the cell to be evaluated to the primary neighboring cell and / or the secondary neighboring cell;

[0142] Determine the relative coverage weight of the cell to be evaluated based on the average level value of the sampling points of the cell to be evaluated, the average level value of the sampling points of the first-level neighboring area, and the average level value of the sampling points of the second-level neighboring area;

[0143] Determine the residency priority of the cell to be evaluated based on the relative load weight, mobility weight, and relative coverage weight;

[0144] An anchor cell is determined from the cells to be evaluated according to the residency priority of the cells to be evaluated.

[0145] In addition, the logic instructions in the above-mentioned memory 530 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0146] On the other hand, the present invention further provides a computer program product, comprising a computer program stored on a non-transitory computer-readable storage medium, wherein the computer program includes program instructions. When the program instructions are executed by a computer, the computer can perform the steps of the anchor cell selection method provided in the above-mentioned method embodiments, for example, including:

[0147] Determine the relative load weight of the cell to be evaluated based on the load information of the cell to be evaluated, the load information of the first-level neighboring cells of the cell to be evaluated, and the load information of the second-level neighboring cells of the cell to be evaluated;

[0148] Determine the mobility weight of the cell to be evaluated based on handover information from the cell to be evaluated to the primary neighboring cell and / or the secondary neighboring cell;

[0149] Determine the relative coverage weight of the cell to be evaluated based on the average level value of the sampling points of the cell to be evaluated, the average level value of the sampling points of the first-level neighboring area, and the average level value of the sampling points of the second-level neighboring area;

[0150] Determine the residency priority of the cell to be evaluated based on the relative load weight, mobility weight, and relative coverage weight;

[0151] An anchor cell is determined from the cells to be evaluated according to the residency priority of the cells to be evaluated.

[0152] In yet another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the anchor cell selection method provided in the above-mentioned method embodiments are implemented, for example, including:

[0153] Determine the relative load weight of the cell to be evaluated based on the load information of the cell to be evaluated, the load information of the first-level neighboring cells of the cell to be evaluated, and the load information of the second-level neighboring cells of the cell to be evaluated;

[0154] Determine the mobility weight of the cell to be evaluated based on handover information from the cell to be evaluated to the primary neighboring cell and / or the secondary neighboring cell;

[0155] Determine the relative coverage weight of the cell to be evaluated based on the average level value of the sampling points of the cell to be evaluated, the average level value of the sampling points of the first-level neighboring area, and the average level value of the sampling points of the second-level neighboring area;

[0156] Determine the residency priority of the cell to be evaluated based on the relative load weight, mobility weight, and relative coverage weight;

[0157] An anchor cell is determined from the cells to be evaluated according to the residency priority of the cells to be evaluated.

[0158] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0159] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or certain parts of the embodiments.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for selecting an anchor cell, characterized in that: include: Determining a relative load weight of the cell to be evaluated based on load information of the cell to be evaluated, load information of a primary neighboring cell of the cell to be evaluated, and load information of a secondary neighboring cell of the cell to be evaluated; Determining a mobility weight of the cell to be evaluated according to handover information from the cell to be evaluated to the primary neighboring cell and / or the secondary neighboring cell; Determining a relative coverage weight of the cell to be evaluated according to an average level value of the sampling points of the cell to be evaluated, an average level value of the sampling points of the first-level neighboring area, and an average level value of the sampling points of the second-level neighboring area; Determining the residency priority of the cell to be evaluated according to the relative load weight, the mobility weight, and the relative coverage weight; An anchor cell is determined from the cells to be evaluated according to the residency priority of the cells to be evaluated.

2. The method for selecting an anchor cell according to claim 1, wherein: The load information of the cell to be evaluated includes: a physical resource block (PRB) utilization rate or a physical downlink control channel (PDCCH) utilization rate of the cell to be evaluated, a proportion of GRB users in the cell to be evaluated, and a proportion of non-standalone network users in the cell to be evaluated; The load information of the first-level neighboring cell includes a PRB utilization rate or a PDCCH utilization rate of the first-level neighboring cell; The load information of the secondary neighboring cell includes a PRB utilization rate or a PDCCH utilization rate of the secondary neighboring cell.

3. The method for selecting an anchor cell according to claim 1, wherein: The handover information from the cell to be evaluated to the first-level neighboring cell includes: the number of anchor neighboring cells of the first-level neighboring cell, the total number of 4G and 5G neighboring cells of the first-level neighboring cell, and the handover success rate of the terminal from the cell to be evaluated to the first-level neighboring cell; The handover information from the cell to be evaluated to the secondary neighboring area includes: the number of anchor neighboring areas of the secondary neighboring area, the total number of 4G and 5G neighboring areas of the secondary neighboring area, and the handover success rate of the terminal from the primary neighboring area to the secondary neighboring area.

4. The method for selecting an anchor cell according to claim 1, wherein: The average level value of the sampling points of the cell to be evaluated includes the weighted average level value of all sampling points of the cell to be evaluated; The average level value of the sampling points in the first-level neighboring area includes the weighted average level values ​​of all sampling points in the first-level neighboring area; The average level value of the sampling points in the secondary neighboring area includes the weighted average level values ​​of all sampling points in the secondary neighboring area.

5. The method for selecting an anchor cell according to claim 1, wherein: The residency priority is a ratio of a product of the mobility weight and the relative coverage weight to the relative load weight.

6. The method for selecting an anchor cell according to any one of claims 1 to 5, characterized in that: The step of determining an anchor cell from the cells to be evaluated according to the residency priority of the cells to be evaluated further comprises: For a single-anchor terminal, determine the anchor cell that meets the current measurement conditions and has the highest residency priority as the priority residency anchor; For a dual-anchor terminal, a co-sited cell that meets the current measurement condition and has the highest residency priority is determined as a priority residency anchor group.

7. The method for selecting an anchor cell according to any one of claims 1 to 5, characterized in that: Also includes: The residency priorities of the cells to be evaluated are periodically determined, and an anchor cell is determined from the cells to be evaluated according to the residency priorities of the cells to be evaluated.

8. A device for selecting an anchor cell, characterized in that: include: A load determination module, configured to determine a relative load weight of the cell to be evaluated based on load information of the cell to be evaluated, load information of a primary neighboring cell of the cell to be evaluated, and load information of a secondary neighboring cell of the cell to be evaluated; A mobility determination module, configured to determine the mobility weight of the cell to be evaluated based on handover information from the cell to be evaluated to the primary neighboring cell and / or the secondary neighboring cell; a coverage determination module, configured to determine a relative coverage weight of the cell to be evaluated based on an average level value of the sampling points of the cell to be evaluated, an average level value of the sampling points of the first-level neighboring area, and an average level value of the sampling points of the second-level neighboring area; a priority determination module, configured to determine the residency priority of the cell to be evaluated according to the relative load weight, the mobility weight, and the relative coverage weight; The selection module is configured to determine an anchor cell from the cells to be evaluated according to the residency priority of the cells to be evaluated.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the processor implements the steps of the method for selecting an anchor cell according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for selecting an anchor cell according to any one of claims 1 to 7 are implemented.

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