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CN-122002238-A - Cell access method and system

CN122002238ACN 122002238 ACN122002238 ACN 122002238ACN-122002238-A

Abstract

The application discloses a cell access method and a cell access system, which belong to the technical field of wireless communication, wherein the cell access method comprises the steps of judging whether the current time is in a preset vehicle control time period or not in a parking state; if yes, acquiring network state information of a current access cell and network state information of a second cell, wherein the second cell is a cell adjacent to the current access cell, and accessing the second cell when the network state information of the current cell meets a preset first condition and the network state information of the second cell meets a preset second condition. According to the scheme, the network access configuration can be optimized before a user prepares to use the vehicle, and long connection stability of the vehicle and the cloud can be ensured in a parking state, so that real-time performance and user experience of remote control are improved, and risks caused by network interruption and connection instability are reduced.

Inventors

  • Huang Runxi

Assignees

  • 北京罗克维尔斯科技有限公司

Dates

Publication Date
20260508
Application Date
20241105

Claims (14)

  1. 1. A cell access method, the cell access method comprising: judging whether the current time is in a preset vehicle control time period or not in a parking state; If yes, acquiring network state information of a current access cell and network state information of a second cell, wherein the second cell is a cell adjacent to the current access cell; And accessing the second cell when the network state information of the current cell meets a preset first condition and the network state information of the second cell meets a preset second condition.
  2. 2. The method of claim 1, wherein the generation rule of the preset vehicle control period is: Counting a vehicle control event triggered by a current vehicle in a preset dormancy time period, and counting the duration of each vehicle control event, wherein the preset dormancy time period is a preset time interval; Counting time intervals of duration time of each vehicle control event, and taking the duration time of the vehicle control event with occurrence frequency larger than a preset second occurrence frequency as the fixed vehicle control time of the current vehicle; And generating the preset vehicle control time period based on the fixed vehicle control time.
  3. 3. The method of claim 2, wherein the generating the preset vehicle control period based on the fixed vehicle control time comprises: Performing discretization statistics on the time length of each fixed vehicle control time to obtain a target fixed vehicle control time, wherein the discrete value of the target fixed vehicle control time is smaller than or equal to a preset discrete value threshold; Dividing the target fixed vehicle control time into a plurality of fixed vehicle control time sets, wherein any two fixed vehicle control times in each fixed vehicle control time set have time overlapping; traversing each fixed vehicle control time set, and determining the earliest starting time and the latest cut-off time in each fixed vehicle control time set; And determining a preset vehicle control time period according to the time interval between the earliest starting time and the latest cut-off time in each fixed vehicle control time set.
  4. 4. The method of claim 1, wherein the state information of the current access cell comprises: The paging cycle of the current access cell, the connection state of long connection during the access of the current access cell, the vehicle access history log during the access of the current access cell and the paging receiving rate of the current access cell; The status information of each neighboring cell includes: The identification code of each adjacent cell, the average reference signal receiving power of each adjacent cell in unit time, the fluctuation of the reference signal receiving power of each adjacent cell, the average signal-to-noise ratio of each adjacent cell in unit time and the fluctuation of the signal-to-noise ratio of each adjacent cell.
  5. 5. The method of claim 1, wherein the determining rule that the network state information of the current cell satisfies the preset first condition is: After each cycle heartbeat wakeup of the vehicle, based on the paging cycle of the current access cell, if the following conditions are all met and the number of times of all establishment reaches the preset number of times, judging that the network state information of the current cell meets the preset first condition: The connection state of the long connection in the access period of the current access cell is disconnection, access failure log information is recorded in a vehicle access history log in the access period of the current access cell, and the paging receiving rate of the current access cell is smaller than a preset paging receiving rate threshold value.
  6. 6. The method of claim 1, wherein the determining that the network state information of the second cell satisfies the preset second condition includes: When the following comparison conditions are all met, judging that the corresponding second cell meets a preset second condition: the average reference signal receiving power in unit time is larger than a preset receiving power threshold value; the fluctuation of the reference signal receiving power is smaller than a preset power fluctuation threshold value; The average signal-to-noise ratio in unit time is larger than a preset average signal-to-noise ratio threshold; The fluctuation of the signal-to-noise ratio is smaller than a preset signal-to-noise ratio fluctuation threshold.
  7. 7. The method of claim 6, wherein if there are a plurality of second cells that satisfy a preset second condition, the method further comprises: And comparing the network states of the second cells meeting the preset second conditions, and taking the candidate adjacent cell with the best network state as the second cell to be accessed.
  8. 8. The method of claim 1, further comprising, when the current time is determined not to be within the preset vehicle control time period, determining whether the current time is within the preset sleep time period, if so, performing a data interaction with the cloud after each cycle of heartbeat wakeup, and if the data interaction fails, reestablishing a long connection with the cloud.
  9. 9. The method of claim 8, wherein the pre-generation rule for the preset sleep period is: Based on recorded historical dormancy time period information of the current vehicle, counting occurrence frequency and time length of each historical dormancy time period; taking a historical dormancy time period with the occurrence frequency larger than the preset first occurrence frequency as the fixed dormancy time of the current vehicle; Performing discretization statistics on the time length of each fixed dormancy time to obtain a target fixed dormancy time, wherein the discrete value of the target fixed dormancy time is smaller than or equal to a preset discrete value threshold value; dividing the target fixed dormancy time into a plurality of fixed dormancy time sets, wherein any two fixed dormancy time in each fixed dormancy time set have time overlapping; Traversing each fixed dormancy time set, and determining the earliest starting time and the latest deadline in each fixed dormancy time set; and determining a preset dormancy time period according to the time interval between the earliest starting time and the latest ending time in each fixed dormancy time set.
  10. 10. A cell access system, the cell access system comprising: The judging unit is used for judging whether the current time is in a preset vehicle control time period or not in a parking state; The system comprises a network state monitoring unit, a network state monitoring unit and a network state monitoring unit, wherein the network state monitoring unit is used for acquiring network state information of a current access cell and network state information of a second cell when the current time is within a preset vehicle control time period, and the second cell is a cell adjacent to the current access cell; And the execution unit is used for accessing the second cell when the network state information of the current cell meets a preset first condition and the network state information of the second cell meets a preset second condition.
  11. 11. A vehicle, characterized in that the vehicle is configured with the cell access system of claim 10.
  12. 12. A machine-readable storage medium having stored thereon instructions for causing a machine to perform the cell access method according to any of claims 1 to 9.
  13. 13. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the cell access method of any of claims 1 to 9 when the computer program is executed by the processor.
  14. 14. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the cell access method according to any of claims 1 to 9.

Description

Cell access method and system Technical Field The present application relates to the field of wireless communication technologies, and in particular, to a cell access method and a cell access system. Background With the development of intelligent network-connected automobile technology, the communication demand of the automobile in a parking dormant state is gradually increased. Conventional cell access schemes typically follow 3GPP standard access criteria such as S criteria and barred field settings in cell System Information Block (SIB) messages. These rules are sufficient for conventional end users such as smartphones, but have some drawbacks in the communication during vehicle park dormancy. Existing schemes rely on conventional 3GPP cell access criteria, such as controlling network access of devices through barred field settings and S criteria in a System Information Block (SIB). However, these regulations often focus on saving energy and network resources of the mobile device, resulting in an insufficiently stable connection of the parked vehicle in a dormant state. When the vehicle is in a parked state, typically considered as a low active device, the mobile network may cut off unused long connections based on energy saving considerations. Such a disconnection mechanism is effective for smartphones, but severely affects the communication stability during parking for vehicles. Because the vehicle time of the user cannot be accurately predicted, the conventional scheme is difficult to configure a stable network access scheme in advance before the vehicle really needs to be started. After the vehicle is parked, the network access strategy cannot be flexibly adjusted, and the passive configuration mode can not ensure the stability of network connection when the user is ready to control the vehicle, so that the functions of remote control, vehicle state monitoring, real-time response and the like can be possibly affected. In addition, since the mobile network prioritizes active devices when allocating resources, the vehicle in a parked state is often unable to obtain priority support, which may cause unstable network connection and even interruption when the vehicle needs to access the cloud. In view of this problem, a network access scheme suitable for a vehicle use scenario needs to be proposed. Disclosure of Invention The embodiment of the application aims to provide a cell access method and a cell access system, which are used for solving the problem of low stability of a long connection network when the conventional cell access rule is applied to vehicle communication. In order to achieve the above object, a first aspect of the present application provides a cell access method, which includes judging whether a current time is within a preset vehicle control time period in a parking state, if yes, collecting network state information of a current access cell and network state information of a second cell, wherein the second cell is a cell adjacent to the current access cell, and accessing the second cell when the network state information of the current cell meets a preset first condition and the network state information of the second cell meets a preset second condition. In the embodiment of the application, the generation rule of the preset vehicle control time period is that vehicle control events triggered by the current vehicle in the preset dormant time period are counted, the duration of the vehicle control events after each time of triggering of the vehicle control messages is counted, the preset dormant time period is a preset time period, the time period of each vehicle control event duration is counted, the duration of the vehicle control events with occurrence frequency larger than the preset second occurrence frequency is used as the fixed vehicle control time of the current vehicle, and the preset vehicle control time period is generated based on the fixed vehicle control time. The method comprises the steps of carrying out discretization statistics on time lengths of fixed vehicle control time to obtain target fixed vehicle control time, dividing the target fixed vehicle control time into a plurality of fixed vehicle control time sets, enabling any two fixed vehicle control time in each fixed vehicle control time set to have time overlapping, traversing each fixed vehicle control time set, determining earliest starting time and latest cut-off time in each fixed vehicle control time set, and determining the preset vehicle control time period according to a time interval between earliest starting time and latest cut-off time in each fixed vehicle control time set. In the embodiment of the application, the paging cycle of the current access cell, the connection state of long connection during the access of the current access cell, the vehicle access history log during the access of the current access cell and the paging receiving rate of the current access cell, and the state information