WO2019010712A1 - 连接重建的方法、装置以及终端和存储介质 - Google Patents

连接重建的方法、装置以及终端和存储介质 Download PDF

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Publication number
WO2019010712A1
WO2019010712A1 PCT/CN2017/093050 CN2017093050W WO2019010712A1 WO 2019010712 A1 WO2019010712 A1 WO 2019010712A1 CN 2017093050 W CN2017093050 W CN 2017093050W WO 2019010712 A1 WO2019010712 A1 WO 2019010712A1
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WIPO (PCT)
Prior art keywords
uplink
frequency range
carrier
random access
uplink frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/093050
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English (en)
French (fr)
Inventor
黄晓庆
王振凯
江海涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cloudminds Shenzhen Robotics Systems Co Ltd
Original Assignee
Cloudminds Shenzhen Robotics Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cloudminds Shenzhen Robotics Systems Co Ltd filed Critical Cloudminds Shenzhen Robotics Systems Co Ltd
Priority to CN201780001954.6A priority Critical patent/CN107820729B/zh
Priority to PCT/CN2017/093050 priority patent/WO2019010712A1/zh
Publication of WO2019010712A1 publication Critical patent/WO2019010712A1/zh
Priority to US16/551,722 priority patent/US11006474B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present disclosure relates to the field of information management, and in particular, to a method, an apparatus, and a terminal and a storage medium for connection reconstruction.
  • the uplink coverage of the system is less than that of the downlink coverage, which affects the transmission of uplink data.
  • the gap between the two is more obvious. Therefore, the high and low frequency bands need to be considered.
  • the uplink frequency of the low frequency band is used for uplink data transmission.
  • the high frequency band may include frequencies of 28 GHz and 3.5 GHz for providing capacity, and the low frequency band may include frequencies of 900 MHz or the like. Used to provide coverage.
  • 3300-3800MHz can be paired with 880-915MHz.
  • downlink data is carried in the frequency range of 3300-3800MHz
  • uplink data is carried in the frequency range of 3300-3800MHz and/or 880-915MHz
  • downlink data is in 3300.
  • -3800MHz frequency range bearer, but if the terminal works in the 3300-3800MHz band, when the terminal moves to its coverage edge, if the base station does not assign the terminal to cover a wider range of uplink frequency resources in time (such as 880-915MHz) The terminal will lose uplink, causing the link to fail and causing dropped calls.
  • the terminal will re-initiate the re-establishment request on the uplink carrier where the out-of-synchronization occurs.
  • the terminal When the terminal is out of synchronization at 3300-3800MHz, the terminal has already left the uplink coverage area of 3300-3800MHz and continues to initiate in the uplink frequency range.
  • the re-establishment request may not work, resulting in the terminal continuously performing the connection re-establishment application.
  • the terminal consumes power, and on the other hand, the terminal service is interrupted.
  • the present disclosure provides a method, an apparatus, and a terminal and a storage medium for connection reconstruction.
  • a method for connection reestablishment including: when an uplink out-of-synchronization occurs on a first uplink carrier in a range of a supported first uplink frequency band, Sending a random access request to the network device on an uplink carrier; the first uplink carrier is determined by the network device in the first uplink frequency range in a frequency pairing combination supported by the terminal and the network device
  • the frequency band pairing combination is composed of a first frequency band composed of a first uplink frequency range and a first downlink frequency range and a supplementary uplink frequency band composed of at least one second uplink frequency range;
  • the first uplink carrier is configured When the random access request fails, the first failure number of the random access request fails; and when the first failure number reaches the preset threshold, the second uplink frequency range of the frequency band combination is combined Determining a first target uplink frequency range, and transmitting the location to the network device on a second uplink carrier within the first target uplink
  • a device for connection reestablishment comprising: a first sending module, configured to: when a terminal performs uplink out-of-synchronization on a first uplink carrier in a range of supported first uplink frequency bands, Sending a random access request to the network device on the first uplink carrier; the first uplink carrier is in the first uplink frequency range by the network device in a frequency pairing combination supported by the terminal and the network device The determined carrier is formed by combining a first frequency band composed of a first uplink frequency range and a first downlink frequency range and a supplementary uplink frequency band composed of at least one second uplink frequency range; When the random access request on the first uplink carrier fails, the first number of failures of the random access request failure is obtained, and the determining module is configured to: when the first failure number reaches a preset threshold Determining, from a second uplink frequency range of the frequency band pairing combination, a first target uplink frequency range; and a second
  • a non-transitory computer readable storage medium comprising one or more programs for performing The method of the above first aspect.
  • a terminal comprising: the non-transitory computer readable storage medium of the above third aspect; and one or more processors for performing the non- A program in a temporary computer readable storage medium.
  • the random uplink request is sent to the network device on the first uplink carrier;
  • the first uplink carrier a carrier determined by the network device in the first uplink frequency range in a frequency pairing combination supported by the terminal and the network device;
  • the frequency band pairing combination is a first uplink frequency range and a first downlink
  • the first frequency band composed of the frequency range is combined with the supplementary uplink frequency band composed of the at least one second uplink frequency range; when the random access request on the first uplink carrier fails, the first random access request fails to be obtained.
  • the terminal can switch the different carriers according to the number of failures of the random access request to perform connection re-establishment, which prevents the terminal from continuously sending a random access request for connection reestablishment when the uplink is out of synchronization on the current carrier, thereby quickly recovering the connection and improving the connection.
  • the success rate of reconstruction is a number of failures
  • FIG. 1 is a schematic flowchart diagram of a method for connection reestablishment according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart diagram of another method for connection reconstruction according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a device for connection reconstruction according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of another apparatus for connection reconstruction according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a third connection reconstruction apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of hardware of a device for connection reconstruction according to an embodiment of the present disclosure.
  • the network device and the terminal may be included in the system.
  • the network device may be a base station (BS).
  • the base station is a device that communicates with the terminal, and may provide communication coverage of a specific physical area.
  • the base station may be an evolved base station (EBB or eNodeB) in LTE, or may be another access network device in the wireless communication network that provides access services.
  • EBB evolved base station
  • eNodeB evolved base station
  • the terminals can be distributed throughout the mobile communication system, and each terminal can be static or mobile.
  • the terminal may be a mobile station, a subscriber unit, a station, or a cellular phone, a personal digital assistant (PDA), a handheld device ( Handheld), a wireless communication device such as a laptop computer.
  • PDA personal digital assistant
  • Handheld handheld device
  • wireless communication device such as a laptop computer.
  • FIG. 1 is a method for connection reestablishment according to an embodiment of the present disclosure. As shown in FIG. 1 , the method is applied to a terminal, and the method includes:
  • the first uplink carrier is a carrier determined by the network device in the first uplink frequency range in a frequency pairing combination supported by the terminal and the network device; the frequency band combination is determined by the first uplink frequency range and the first a downlink frequency range consisting of a first frequency band and by at least one second upper
  • the supplementary uplink frequency band is composed of a line frequency range.
  • the frequency band combination may include: a frequency band including an uplink working frequency range and a downlink operating frequency range, Band X, and an uplink working frequency range of 3300-3800 MHz, and a downlink operating frequency range. It is 3300-3800MHz, supplementing the uplink frequency band to Band Y, and its uplink frequency range is 880-915MHz.
  • the uplink data corresponding to the frequency band combination can be transmitted in two uplink frequency ranges, such as 3300-3800MHz and 880-915MHz, and the downlink data can be transmitted in a downlink frequency range, such as 3300-3800MHz.
  • the uplink data may be carried by using the frequency range of 3300-3800 MHz, and when the terminal is at the cell edge, the uplink data may be carried by the frequency range of 880-915 MHz.
  • the uplink loss of the first uplink carrier in the range of the first uplink frequency band supported by the terminal may be determined by the terminal: after the terminal successfully sends the random access request to the network device on the first uplink carrier, The network device sends a random access request response to the terminal, where the random access request response includes a timing advance, and the time advance is sent to the terminal periodically, and the terminal does not receive the first preset time. If the time advances, the terminal determines that the uplink out-of-synchronization has occurred and does not allow the data to be sent again. At this time, the terminal will initiate random access on the first uplink carrier again to try to re-establish the connection.
  • the timer corresponding to the first uplink carrier may be set by the terminal, and when the terminal receives the time advance corresponding to the first uplink carrier sent by the network device, the timer is used. Cleared; when the terminal receives the timing advance last time, the timer starts to re-clock after the timer is cleared, and when the time recorded by the timer reaches the first preset time, if the corresponding first time is not received, The time advance of the uplink carrier, the terminal determines that the uplink out-of-synchronization has occurred.
  • the first preset time period may be configured by the network device or the network management system according to the number of connected terminals in the first uplink carrier in the network device, and the terminal is notified, when the network device corresponds to the first uplink carrier.
  • the first preset time period may be set lower, and the number of uplinks of all terminals corresponding to the network device on the first uplink carrier is ensured. According to the reliability of the arrival, the risk of interference is reduced. If the number of terminals is small, the first preset time period may be set higher, that is, the time difference for allowing all terminal uplink data to arrive at the base station may be larger and more relaxed.
  • the interference risk is increased to a certain extent, at the same time, more terminals are prevented from performing connection reconstruction, thereby reducing the overhead of uplink synchronization.
  • this step after the random access request is sent to the network device on the first uplink carrier, it is determined whether the feedback information sent by the network device is received in the second preset time period, and the feedback information sent by the network device is received. And determining that the random access is successfully requested on the first uplink carrier, and determining that the random access request fails on the first uplink carrier when the feedback information sent by the network device is not received.
  • the first failure number may be obtained by setting a first counter corresponding to the first uplink carrier, and the random access request fails on the first uplink carrier.
  • the count of the first counter is incremented by one
  • the count of the first counter is cleared; in this step, the random access request is determined.
  • the count of the first counter can be incremented by 1, and the count of the first counter is read, and the first number of failures can be known.
  • the third uplink frequency range may be determined from the second uplink frequency range of the frequency band pairing combination, where the third uplink frequency range is that the carrier frequency is smaller than the frequency of the first uplink carrier in the second uplink frequency range.
  • a range; after determining the third uplink frequency range, the first target uplink frequency range may be determined by any one of the following two processing manners: one processing manner is to determine a carrier load with the smallest load from the third uplink frequency range Upstream frequency range and determine the load most The uplink frequency range corresponding to the small carrier is the first target uplink frequency range.
  • the other processing mode is to randomly determine, from the third uplink frequency range, an uplink frequency range corresponding to one carrier as the first target uplink frequency range.
  • the preset threshold is configured by the network device or the network management system, and informs the terminal that when the preset threshold is set lower, the terminal can be faster in the second coverage.
  • the uplink carrier initiates uplink synchronization reconstruction and sends uplink data.
  • the preset threshold is set to be lower, it means that the terminal can perform more attempts on the original first uplink carrier to reduce the second uplink carrier with better coverage.
  • the load pressure that initiates the upstream synchronization rebuild.
  • the terminal may continue to determine whether the random access request on the second uplink carrier is successful; When the random access request on the second uplink carrier fails, the second failure number of the random access request fails to be obtained; when the second failure number reaches the preset threshold, determining the second in the frequency band pairing combination Whether there is a new uplink frequency range in the uplink frequency range; when it is determined that there is a new uplink frequency range, determining a second target uplink frequency range from the new uplink frequency range, and uplinking in the second target uplink frequency range The random access request is sent to the network device on the carrier. When it is determined that the new uplink frequency range does not exist, it is determined that the radio link connection has failed.
  • the uplink data is sent on the second uplink carrier.
  • the fourth uplink frequency range exists in the second uplink frequency range of the frequency band combination, and the terminal has not sent the random access request on the carrier in the fourth uplink frequency range, and the fourth uplink frequency range is If the carrier frequency is smaller than the uplink frequency range in which the random access request has been sent, the fourth uplink frequency range is determined to be a new uplink frequency range.
  • the terminal can switch the different carriers according to the number of failures of the random access request to perform connection re-establishment, which prevents the terminal from continuously sending a random access request for connection reestablishment when the uplink is out of synchronization on the current carrier, thereby quickly recovering the connection and improving the connection.
  • the success rate of reconstruction is the number of failures of the random access request to perform connection re-establishment, which prevents the terminal from continuously sending a random access request for connection reestablishment when the uplink is out of synchronization on the current carrier, thereby quickly recovering the connection and improving the connection.
  • the frequency band pairing combination in this embodiment is composed of a first uplink frequency range and a first downlink frequency range.
  • a description is made by combining a frequency band with a supplementary uplink frequency band consisting of a second uplink frequency range, and the method includes:
  • the terminal When the terminal performs uplink out-synchronization on the first uplink carrier in the supported first uplink frequency range, the terminal sends a random access request to the network device on the first uplink carrier.
  • the first uplink carrier is a carrier determined by the network device in the first uplink frequency range in a frequency pairing combination supported by the terminal and the network device; the frequency band combination is determined by the first uplink frequency range and the first A first frequency band composed of a downlink frequency range is combined with a supplementary uplink frequency band composed of at least one second uplink frequency range.
  • the frequency band combination may include: a frequency band including an uplink working frequency range and a downlink operating frequency range is a Band X, its uplink operating frequency range is 3300-3800MHz, the downlink operating frequency range is 3300-3800MHz, the supplementary upstream frequency band is Band Y, and its uplink frequency range is 880-915MHz.
  • the uplink data corresponding to the frequency band combination can be transmitted in two uplink frequency ranges, such as 3300-3800MHz and 880-915MHz, and the downlink data can be transmitted in a downlink frequency range, such as 3300-3800MHz.
  • the uplink data may be carried by using the frequency range of 3300-3800 MHz, and when the terminal is at the cell edge, the uplink data may be carried by the frequency range of 880-915 MHz.
  • the uplink desynchronization of the first uplink carrier in the range of the first uplink frequency band supported by the terminal may be determined by the following: after the terminal successfully sends the random access request to the network device on the first uplink carrier, the network device A random access request response is sent to the terminal, where the random access request response includes a timing advance, and the time advance is sent to the terminal periodically, and the terminal does not receive the time advance in the first preset time. If the quantity is determined, the terminal determines that the uplink out-of-synchronization has occurred and does not allow the data to be sent again. At this time, the terminal initiates random access on the first uplink carrier again to try to re-establish the connection.
  • the terminal corresponding to the first uplink carrier may be set by using the terminal.
  • the timer is timed, and when the terminal receives the time advance corresponding to the first uplink carrier sent by the network device, the timer is cleared; when the terminal receives the time advance amount last time, the timer clears After zero, the time is re-timed, and when the time recorded by the timer reaches the first preset time, if the time advance corresponding to the first uplink carrier is not received, the terminal determines that the uplink out-of-synchronization has occurred.
  • the first preset time period may be configured by the network device or the network management system according to the number of connected terminals in the first uplink carrier in the network device, and the terminal is notified, when the network device corresponds to the first uplink carrier.
  • the first preset time period may be set lower, ensuring that the uplink data of all terminals corresponding to the network equipment on the first uplink carrier arrives at a consistent reliability, thereby reducing the risk of interference;
  • the first preset time period may be set higher, that is, the time difference for allowing all terminal uplink data to arrive at the base station may be larger and more lenient, although the interference risk is increased to some extent, but at the same time, more is avoided.
  • the terminal performs connection reestablishment, thereby reducing the overhead of uplink synchronization.
  • the terminal determines whether the random access request on the first uplink carrier is successful.
  • this step after the random access request is sent to the network device on the first uplink carrier, it is determined whether the feedback information sent by the network device is received in the second preset time period, and the feedback information sent by the network device is received. When it is determined that the random access request on the first uplink carrier is successful, when the feedback information sent by the network device is not received, determining that the random access request on the first uplink carrier fails.
  • the first number of failures may be obtained by setting a first counter corresponding to the first uplink carrier, when the random access request is on the first uplink carrier. When the failure occurs, the count of the first counter is incremented by 1. When the random access request on the first uplink carrier is successful, the count of the first counter is cleared; in this step, the random connection is determined. When the incoming request fails, the count of the first counter may be incremented by 1, and the count of the first counter is read, and the first number of failures is known.
  • the uplink data is sent on the first uplink carrier.
  • step S203 and step S204 are performed.
  • the terminal acquires the first failure number of the random access request failure.
  • the first number of failures may be obtained by setting a first counter corresponding to the first uplink carrier, and when the random access fails on the first uplink carrier, the first counter is incremented by one, when random.
  • the count of the first counter is cleared; in this step, when it is determined that the random access request fails, the count of the first counter may be incremented by one. And reading the count of the first counter, the first number of failures can be known.
  • the terminal determines whether the first failure number reaches a preset threshold.
  • the method When it is determined that the first failure number does not reach the preset threshold, the method further sends a random access request to the network device on the first uplink carrier.
  • step S205 is performed.
  • the preset threshold is configured by the network device or the network management system, and informs the terminal that when the preset threshold is set lower, the terminal can be faster in the second coverage.
  • the uplink carrier initiates uplink synchronization reconstruction and sends uplink data.
  • the preset threshold is set to be lower, it means that the terminal can perform more attempts on the original first uplink carrier to reduce the second uplink carrier with better coverage.
  • the load pressure that initiates the upstream synchronization rebuild.
  • the terminal determines a first target uplink frequency range from a second uplink frequency range of the frequency band pairing combination.
  • the third uplink frequency range may be determined from the second uplink frequency range of the frequency band pairing combination, where the third uplink frequency range is that the carrier frequency is smaller than the frequency of the first uplink carrier in the second uplink frequency range.
  • a range; after determining the third uplink frequency range, the first target uplink frequency range may be determined by any one of the following two processing manners: one processing manner is to determine a carrier load with the smallest load from the third uplink frequency range The uplink frequency range, and determine that the uplink frequency range corresponding to the carrier with the smallest load is the first target uplink frequency range; another processing method The uplink frequency range corresponding to one carrier is randomly determined from the third uplink frequency range to be the first target uplink frequency range.
  • the second uplink frequency range is only one, it may be determined that the second uplink frequency range is the first target uplink frequency range.
  • the terminal sends the random access request to the network device on the second uplink carrier in the first target uplink frequency range.
  • the terminal determines whether the random access request on the second uplink carrier is successful.
  • the uplink data is sent on the second uplink carrier.
  • step S210 is performed.
  • the terminal acquires a second failure number of the random access request failure.
  • the second number of failures may be obtained by setting a second counter corresponding to the second uplink carrier, and when the random access request on the second uplink carrier fails, incrementing the count of the second counter by 1 when When the random access request on the second uplink carrier is successful, the count of the second counter is cleared; in this step, when it is determined that the random access request fails, the count of the second counter may be incremented by one. And reading the count of the second counter, the second number of failures can be known.
  • the terminal determines whether the second number of failures reaches a preset threshold.
  • the method further sends a random access request to the network device on the second uplink carrier.
  • step S212 is performed.
  • the terminal determines that the wireless link connection fails.
  • the wireless link connection may be determined to be determined when the second failure number reaches the preset threshold. , re-initiate cell search.
  • the first uplink frequency range and the second range included in the frequency band combination are The uplink frequency range is one for each example. The embodiment is not limited thereto.
  • the second uplink frequency range in the frequency band combination may also include more (eg, including three or more uplink frequency ranges).
  • the uplink frequency range, at this time, in step S209, after determining that the second failure number reaches the preset threshold, the terminal may continue to perform the following steps:
  • the terminal determines whether there is a new uplink frequency range in the combination of the frequency bands.
  • the fourth uplink frequency range exists in the second uplink frequency range of the frequency band combination, and the terminal has not sent the random access request on the carrier in the fourth uplink frequency range, and the fourth uplink frequency range is If the carrier frequency is smaller than the uplink frequency range in which the random access request has been sent, the fourth uplink frequency range is determined to be a new uplink frequency range.
  • the uplink data is transmitted on the target uplink carrier, and if the random access request fails on the target uplink carrier, steps S1 and S2 are performed cyclically.
  • the terminal can switch the different carriers according to the number of failures of the random access request to perform connection reestablishment, thereby preventing the terminal from continuously sending a random access request to perform connection reconnection on the current carrier when the current carrier is out of synchronization, thereby enabling Quickly restore connections and increase the success rate of connection reestablishment.
  • FIG. 3 is a device for connection reestablishment according to an embodiment of the present disclosure. As shown in FIG. 3, the device is applied to a terminal, and the device includes:
  • the first sending module 301 is configured to: when the terminal performs uplink out-synchronization on the first uplink carrier in the supported first uplink frequency range, send a random access request to the network device on the first uplink carrier;
  • the first uplink carrier is a carrier determined by the network device in the first uplink frequency range in a frequency pairing combination supported by the terminal and the network device; the band pairing combination is performed by the first uplink frequency range and the first The first frequency band consisting of the line frequency range is combined with the supplementary uplink frequency band consisting of at least one second uplink frequency range;
  • the obtaining module 302 is configured to acquire, when the random access request on the first uplink carrier fails, the first failure number of the random access request failure;
  • the determining module 303 is configured to determine, according to the second uplink frequency range of the frequency band pairing combination, the first target uplink frequency range, when the first failure number reaches the preset threshold value;
  • the second sending module 304 is configured to send the random access request to the network device on the second uplink carrier in the first target uplink frequency range.
  • the obtaining module 302 is configured to: after adding the first counter corresponding to the first uplink carrier to the first counter, obtain the value recorded by the first counter to obtain the first number of failures; wherein the first counter is used to When the random access fails on the first uplink carrier, the count is incremented by one; when the random access request is successfully sent, the count is cleared.
  • the determining module 303 includes:
  • a determining sub-module 3031 configured to determine a third uplink frequency range from a second uplink frequency range of the frequency band pairing combination, where the third uplink frequency range is that the carrier frequency is smaller than the first uplink carrier in the second uplink frequency range Frequency Range;
  • the processing sub-module 3032 is configured to determine an uplink frequency range corresponding to the carrier with the smallest load from the third uplink frequency range, and determine that the uplink frequency range corresponding to the carrier with the smallest load is the first target uplink frequency range; or The uplink frequency range corresponding to one carrier is randomly determined in the third uplink frequency range to be the first target uplink frequency range.
  • the apparatus further includes:
  • the looping module 304 is configured to continue to determine whether the random access request on the second uplink carrier is successful; when the random access request on the second uplink carrier fails, obtain the random access request loss The second failure frequency of the failure; when the second failure number reaches the preset threshold, determining whether there is a new uplink frequency range in the second uplink frequency range in the band pairing combination; determining that there is a new uplink frequency In the range, the second target uplink frequency range is determined from the new uplink frequency range, and the random access request is sent to the network device on the uplink carrier in the second target uplink frequency range.
  • the looping module 304 is further configured to determine that the radio link connection fails when the new uplink frequency range does not exist.
  • the looping module 304 is further configured to send uplink data on the second uplink carrier when the random access request on the second uplink carrier is successful.
  • the terminal can switch the different carriers according to the number of failures of the random access request to perform connection re-establishment, thereby preventing the terminal from continuously sending a random access request to perform connection re-establishment on the current carrier when the current carrier is out of synchronization, thereby enabling Quickly restore connections and increase the success rate of connection reestablishment.
  • FIG. 6 is a schematic structural diagram of a device 600 for connection reconstruction according to an embodiment of the present disclosure.
  • the device 600 may be provided as a terminal.
  • the apparatus 600 can include a processor 601, a memory 602, a multimedia component 603, an input/output (I/O) interface 604, and a communication component 605.
  • the processor 601 is configured to control the overall operation of the apparatus 600 to complete all or part of the steps of the method for connection reconstruction.
  • Memory 602 is used to store various types of data to support operations at the device 600, such as may include instructions for any application or method operating on the device 600.
  • the memory 602 can be implemented by any type of volatile or non-volatile storage terminal device or a combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read only memory. (Electrically Erasable Programmable Read-Only Memory, EEPROM for short), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM for short), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), Magnetic Memory, Flash Memory, Disk Or a disc.
  • SRAM Static Random Access Memory
  • EEPROM Electrically erasable programmable Read only memory
  • EEPROM Electrically erasable programmable read-only memory
  • EPROM Erasable Programmable Read-Only Memory
  • PROM Programmable Read-Only Memory
  • ROM Read-Only Memory
  • Magnetic Memory Flash Memory
  • Disk Or a disc Disk Or a disc.
  • the multimedia component 603 can include a screen and audio components.
  • the screen may be, for example, a touch screen, and the audio component is used to output and/or input an audio signal.
  • Communication component 605 is used for wired or wireless communication between the device 600 and other devices.
  • Wireless communication such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 605 can include: Wi-Fi module, Bluetooth module, NFC module.
  • the device 1000 may be configured by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), and digital signal processing terminals (Digital).
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • Digital Digital
  • DSPD Signal Processing Device
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • controller microcontroller, microprocessor or other electronic components Implementation, a method for performing the above connection reconstruction.
  • the embodiment of the present disclosure further provides a non-transitory computer readable storage medium 1 including one or more programs for performing a connection reconstruction.
  • the method is applied to a terminal, and the method comprises:
  • the terminal When the terminal performs uplink out-of-synchronization on the first uplink carrier in the range of the supported first uplink frequency band, sending a random access request to the network device on the first uplink carrier;
  • the first uplink carrier is at the terminal and the network a carrier in the frequency pairing combination supported by the device, the carrier determined by the network device in the first uplink frequency range;
  • the frequency band pairing combination is a first frequency band consisting of the first uplink frequency range and the first downlink frequency range, and at least one
  • a supplementary uplink frequency band composed of a second uplink frequency range is jointly formed;
  • the random access request on the first uplink carrier fails, the random access is acquired a first number of failures in which the request fails; and when the first number of failures reaches a preset threshold, determining a first target uplink frequency range from the second uplink frequency range of the frequency band pair combination, and in the Sending the random access request to the network device on a second uplink carrier within a target uplink frequency range.
  • the first failure number of the failure to obtain the random access request includes: after adding the first counter corresponding to the first uplink carrier to one, obtaining the value recorded by the first counter to obtain the first failure number;
  • the first counter is configured to increase the count when the random access request fails on the first uplink carrier, and to clear the count when the random access request is successfully sent.
  • determining the first target uplink frequency range from the second uplink frequency range of the frequency band pairing combination includes: determining a third uplink frequency range from the second uplink frequency range of the frequency band pairing combination, the third uplink frequency The range is that the carrier frequency is smaller than the frequency range of the first uplink carrier in the second uplink frequency range; determining an uplink frequency range corresponding to the carrier with the smallest load from the third uplink frequency range, and determining an uplink corresponding to the carrier with the smallest load
  • the frequency range is the first target uplink frequency range; or the uplink frequency range corresponding to one carrier is randomly determined from the third uplink frequency range to be the first target uplink frequency range.
  • the method further includes: determining whether the random access request on the second uplink carrier is successful; When the random access request on the second uplink carrier fails, the second failure number of the random access request fails to be obtained; when the second failure number reaches the preset threshold, determining the second in the frequency band pairing combination Whether there is a new uplink frequency range in the uplink frequency range; when it is determined that there is a new uplink frequency range, determining a second target uplink frequency range from the new uplink frequency range, and uplinking in the second target uplink frequency range The random access request is sent to the network device on the carrier.
  • the method further includes: determining that the wireless link connection fails when the new uplink frequency range does not exist.
  • the method further includes: sending uplink data on the second uplink carrier when the random access request on the second uplink carrier is successful.

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Abstract

本公开提供了一种连接重建的方法、装置以及终端和存储介质，该方法包括：当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，在第一上行载波上向网络设备发送随机接入请求；第一上行载波为在终端和网络设备均支持的频率配对组合中由网络设备在第一上行频率范围内确定的载波；在所述第一上行载波上的随机接入请求失败时，获取随机接入请求失败的第一失败次数；在第一失败次数达到预设门限值时，从频段配对组合的第二上行频率范围中确定第一目标上行频率范围，并在第一目标上行频率范围内的第二上行载波上向网络设备发送随机接入请求。

Description

连接重建的方法、装置以及终端和存储介质 技术领域
本公开涉及信息管理领域，尤其涉及一种连接重建的方法、装置以及终端和存储介质。
背景技术
在3G和4G网络中，系统的上行覆盖相比于下行覆盖的覆盖能力较差，从而影响上行数据的传输，而在5G网络中，两者间的差距更加明显，因此，需要考虑将高低频段搭配使用，即在高频段自身上行覆盖受限时，使用低频段的上行频率进行上行数据传输，其中，高频段可以包括28GHz、3.5GHz等频率，用于提供容量，低频段可以包括900MHz等频率，用于提供覆盖。
在实际应用中，可以将3300-3800MHz与880-915MHz进行配对使用，例如，下行数据在3300-3800MHz频率范围承载，上行数据在3300-3800MHz和/或880-915MHz频率范围承载，下行数据在3300-3800MHz频率范围承载，但是，若终端工作在3300-3800MHz频段，在终端移动到其覆盖边缘时，如果基站没有及时的为终端指配覆盖范围更广的上行频率资源的话(如880-915MHz)，终端将发生上行失步，导致链路失败，产生掉话。此时，终端将在发生失步的上行载波上重新发起重建请求，而当终端在3300-3800MHz上行失步后，往往已经离开了3300-3800MHz的上行覆盖区域，继续在该上行频率范围内发起重建请求，将可能无法工作，导致终端不停的进行连接重建申请，一方面，将导致终端耗电，另一方面，导致终端业务的中断。
发明内容
为了解决上述问题，本公开提供一种连接重建的方法、装置以及终端和存储介质。
为了实现上述目的，根据本公开实施例的第一方面，提供一种连接重建的方法，包括当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，在所述第一上行载波上向网络设备发送随机接入请求；所述第一上行载波为在所述终端和所述网络设备均支持的频率配对组合中由网络设备在所述第一上行频率范围内确定的载波；所述频段配对组合是由第一上行频率范围和第一下行频率范围组成的第一频段与由至少一个第二上行频率范围组成的补充上行频段联合构成；在所述第一上行载波上的随机接入请求失败时，获取所述随机接入请求失败的第一失败次数；在所述第一失败次数达到预设门限值时，从所述频段配对组合的第二上行频率范围中确定第一目标上行频率范围，并在所述第一目标上行频率范围内的第二上行载波上向所述网络设备发送所述随机接入请求。
根据本公开实施例的第二方面，提供一种连接重建的装置，包括：第一发送模块，用于当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，在所述第一上行载波上向网络设备发送随机接入请求；所述第一上行载波为在所述终端和所述网络设备均支持的频率配对组合中由网络设备在所述第一上行频率范围内确定的载波；所述频段配对组合是由第一上行频率范围和第一下行频率范围组成的第一频段与由至少一个第二上行频率范围组成的补充上行频段联合构成；获取模块，用于在所述第一上行载波上的随机接入请求失败时，获取所述随机接入请求失败的第一失败次数；确定模块，用于在所述第一失败次数达到预设门限值时，从所述频段配对组合的第二上行频率范围中确定第一目标上行频率范围；第二发送模块，用于在所述第一目标上行频率范围内的第二上行载波上向所述网络设备发送所述随 机接入请求。
根据本公开实施例的第三方面，提供一种非临时性计算机可读存储介质，所述非临时性计算机可读存储介质中包括一个或多个程序，所述一个或多个程序用于执行上述第一方面所述的方法。
根据本公开实施例的第四方面，提供一种终端，所述终端包括：上述第三方面所述的非临时性计算机可读存储介质；以及一个或者多个处理器，用于执行所述非临时性计算机可读存储介质中的程序。
采用上述技术方案，当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，在所述第一上行载波上向网络设备发送随机接入请求；所述第一上行载波为在所述终端和所述网络设备均支持的频率配对组合中由网络设备在所述第一上行频率范围内确定的载波；所述频段配对组合是由第一上行频率范围和第一下行频率范围组成的第一频段与由至少一个第二上行频率范围组成的补充上行频段联合构成；在所述第一上行载波上的随机接入请求失败时，获取所述随机接入请求失败的第一失败次数；在所述第一失败次数达到预设门限值时，从所述频段配对组合的第二上行频率范围中确定第一目标上行频率范围，并在所述第一目标上行频率范围内的第二上行载波上向所述网络设备发送所述随机接入请求。这样，终端能够根据随机接入请求失败的次数切换不同的载波进行连接重建，避免了终端在当前载波上发生上行失步时持续发送随机接入请求进行连接重建，从而能够快速恢复连接，提高连接重建的成功率。
附图说明
图1为本公开实施例提供的一种连接重建的方法的流程示意图；
图2为本公开实施例提供的另一种连接重建的方法的流程示意图；
图3为本公开实施例提供的一种连接重建的装置的结构示意图；
图4为本公开实施例提供的另一种连接重建的装置的结构示意图；
图5为本公开实施例提供的第三种连接重建的装置的结构示意图；
图6为本公开实施例提供的一种连接重建的装置的硬件结构示意图。
具体实施方式
以下结合附图对本公开的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，并不用于限制本公开。
本公开以下实施例提供的技术方案可以应用于5G移动通信系统。该系统中可以包括网络设备和终端，该网络设备可以是基站(Base Station，简称为BS)，其中，基站是与终端进行通信的设备，其可以提供特定物理区域的通信覆盖。例如，基站具体可以是LTE中的演进型基站(evolutional node B，简称为ENB或eNodeB)，或者，也可以是无线通信网络中的提供接入服务的其他接入网设备。
终端可以分布于整个移动通信系统中，每个终端可以是静态的或移动的。例如，终端可以是移动台(mobile station)，用户单元(subscriber unit)，站台(station)，还可以是蜂窝电话(cellular phone)，个人数字助理(personal digital assistant，简称为PDA)，手持设备(handheld)，膝上型电脑(laptop computer)等无线通信设备。
图1为本公开实施例提供的一种连接重建的方法，如图1所示，该方法应用于终端，该方法包括：
S101、当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，在该第一上行载波上向网络设备发送随机接入请求。
其中，该第一上行载波为在该终端和该网络设备均支持的频率配对组合中由网络设备在该第一上行频率范围内确定的载波；该频段配对组合是由第一上行频率范围和第一下行频率范围组成的第一频段与由至少一个第二上 行频率范围组成的补充上行频段联合构成，例如，该频段组合可以包括：一个包含上行工作频率范围和下行工作频率范围的频段为Band X，其上行工作频率范围为3300-3800MHz，下行工作频率范围为3300-3800MHz，补充上行频段为Band Y，其上行频率范围为880-915MHz。对应该频段组合的上行数据可以在两个上行频率范围内的载波发送，如3300-3800MHz与880-915MHz，下行数据可以在一个下行频率范围发送，如3300-3800MHz。一般地，当终端在小区中心时，可以使用3300-3800MHz频率范围承载上行数据，当终端在小区边缘时，可以用880-915MHz频率范围承载上行数据。
另外，在本步骤中，可以通过以下方式确定终端在支持的第一上行频段范围内的第一上行载波发生上行失步：终端在第一上行载波上向网络设备发送随机接入请求成功后，网络设备会向终端发送随机接入请求响应，该随机接入请求响应包括时间提前量，并会在后续周期性的给终端发送时间提前量，当终端在第一预设时间内没有收到该时间提前量，则终端确定已经发生了上行失步，不允许再发送上数据了，此时，终端会再次在第一上行载波上发起随机接入，以尝试重新建立连接。
在一种可能的实现方式中，可以通过终端设置对应该第一上行载波的计时器进行计时，当终端接收到网络设备发送的对应该第一上行载波的时间提前量时，则将该计时器清零；当终端在上一次接收到该时间提前量时，该计时器清零后开始重新计时，并在该计时器记录的时间达到第一预设时间时，若未接收到对应该第一上行载波的时间提前量，终端确定已经发生了上行失步。
需要说明的是，该第一预设时间段可以由网络设备或者网管系统根据网络设备内在第一上行载波内的连接态终端数目进行配置，并告知终端，当网络设备在第一上行载波上对应的连接态终端数目较多时，该第一预设时间段可以设置的低一些，保证网络设备在第一上行载波上对应的所有终端上行数 据到达一致的可靠性，降低干扰风险；若终端数目较少时，则可将该第一预设时间段设置的高一些，即允许所有终端上行数据到达基站的时间差可以更大，更宽松，虽然在一定程度提升了干扰风险，但同时避免了更多的终端进行连接重建，从而降低了上行同步的开销。
S102、在该第一上行载波上的随机接入请求失败时，获取该随机接入请求失败的第一失败次数。
在本步骤中，可以在第一上行载波上向网络设备发送随机接入请求后，确定在第二预设时间段内是否接收到网络设备发送的反馈信息，在接收到网络设备发送的反馈信息时，确定该随机接入在该第一上行载波上请求成功，在未接收到网络设备发送的反馈信息时，确定在该第一上行载波上的随机接入请求失败。
在确定该第一上行载波上的随机接入请求失败后，可以通过设置的对应第一上行载波的第一计数器获得该第一失败次数，当该随机接入在该第一上行载波上请求失败时，将该第一计数器的计数加1，当随机接入在该第一上行载波上请求成功时，则将该第一计数器的计数清零；在本步骤中，在确定该随机接入请求失败时，可以将该第一计数器的计数加1，并读取该第一计数器的计数，即可获知该第一失败次数。
S103、在该第一失败次数达到预设门限值时，从该频段配对组合的第二上行频率范围中确定第一目标上行频率范围，并在该第一目标上行频率范围内的第二上行载波上向该网络设备发送该随机接入请求。
在本步骤中，可以从该频段配对组合的第二上行频率范围中确定第三上行频率范围，该第三上行频率范围为在该第二上行频率范围中载波频率小于该第一上行载波的频率范围；在确定第三上行频率范围后，可以通过以下两种处理方式中的任一种确定第一目标上行频率范围：一种处理方式是从该第三上行频率范围中确定负载最小的载波对应的上行频率范围，并确定负载最 小的载波对应的上行频率范围为该第一目标上行频率范围；另一种处理方式是从该第三上行频率范围中随机确定一个载波对应的上行频率范围为该第一目标上行频率范围。
需要说明的是，该预设门限值由网络设备或者网管系统进行配置，并告知终端，当预设门限值设置的较低，则意味着终端能够更快的在覆盖更佳的第二上行载波发起上行同步重建，发送上行数据；当预设门限值设置的较低高，则意味着终端能够在原有第一上行载波进行更多尝试，以降低在覆盖更佳的第二上行载波发起上行同步重建的负载压力。
这里，终端在该第一目标上行频率范围内的第二上行载波上向该网络设备发送该随机接入请求后，可以继续确定在该第二上行载波上的随机接入请求是否成功；在该第二上行载波上的随机接入请求失败时，获取该随机接入请求失败的第二失败次数；在该第二失败次数达到该预设门限值时，确定该频段配对组合中的第二上行频率范围内是否存在新的上行频率范围；在确定存在新的上行频率范围时，从该新的上行频率范围中确定第二目标上行频率范围，并在该第二目标上行频率范围内的上行载波上向该网络设备发送该随机接入请求。在确定不存在该新的上行频率范围时，确定无线链路连接失败。
在该第二上行载波上的随机接入请求成功时，在该第二上行载波上发送上行数据。
其中，若频段组合中的第二上行频率范围中还存在第四上行频率范围，且终端还未在该第四上行频率范围内的载波上发送过随机接入请求，且第四上行频率范围的载波频率小于已经发送过随机接入请求的上行频率范围，则确定该第四上行频率范围为新的上行频率范围。
这样，终端能够根据随机接入请求失败的次数切换不同的载波进行连接重建，避免了终端在当前载波上发生上行失步时持续发送随机接入请求进行连接重建，从而能够快速恢复连接，提高连接重建的成功率。
图2是根据本公开实施例提供的一种连接重建的方法，如图2所示，本实施例中的频段配对组合是由一个第一上行频率范围和一个第一下行频率范围组成的第一频段与由一个第二上行频率范围组成的补充上行频段联合构成为例进行的说明，该方法包括：
S201、当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，终端在确定第一上行载波上向网络设备发送随机接入请求。
其中，该第一上行载波为在该终端和该网络设备均支持的频率配对组合中由网络设备在该第一上行频率范围内确定的载波；该频段配对组合是由第一上行频率范围和第一下行频率范围组成的第一频段与由至少一个第二上行频率范围组成的补充上行频段联合构成，例如，该频段组合可以包括：一个包含上行工作频率范围和下行工作频率范围的频段为Band X，其上行工作频率范围为3300-3800MHz，下行工作频率范围为3300-3800MHz，补充上行频段为Band Y，其上行频率范围为880-915MHz。对应该频段组合的上行数据可以在两个上行频率范围内的载波发送，如3300-3800MHz与880-915MHz，下行数据可以在一个下行频率范围发送，如3300-3800MHz。一般地，当终端在小区中心时，可以使用3300-3800MHz频率范围承载上行数据，当终端在小区边缘时，可以用880-915MHz频率范围承载上行数据。
在本步骤中，可以通过以下方式确定终端在支持的第一上行频段范围内的第一上行载波发生上行失步：终端在第一上行载波上向网络设备发送随机接入请求成功后，网络设备会向终端发送随机接入请求响应，该随机接入请求响应包括时间提前量，并会在后续周期性的给终端发送时间提前量，当终端在第一预设时间内没有收到该时间提前量，则终端确定已经发生了上行失步，不允许再发送上数据了，此时，终端会再次在第一上行载波上发起随机接入，以尝试重新建立连接。
在一种可能的实现方式中，可以通过终端设置对应该第一上行载波的计 时器进行计时，当终端接收到网络设备发送的对应该第一上行载波的时间提前量时，则将该计时器清零；当终端在上一次接收到该时间提前量时，该计时器清零后开始重新计时，并在该计时器记录的时间达到第一预设时间时，若未接收到对应该第一上行载波的时间提前量，终端确定已经发生了上行失步。
需要说明的是，该第一预设时间段可以由网络设备或者网管系统根据网络设备内在第一上行载波内的连接态终端数目进行配置，并告知终端，当网络设备在第一上行载波上对应的连接态终端数目较多时，该第一预设时间段可以设置的低一些，保证网络设备在第一上行载波上对应的所有终端上行数据到达一致的可靠性，降低干扰风险；若终端数目较少时，则可将该第一预设时间段设置的高一些，即允许所有终端上行数据到达基站的时间差可以更大，更宽松，虽然在一定程度提升了干扰风险，但同时避免了更多的终端进行连接重建，从而降低了上行同步的开销。
S202、终端确定在第一上行载波上的随机接入请求是否成功。
在本步骤中，可以在第一上行载波上向网络设备发送随机接入请求后，确定在第二预设时间段内是否接收到网络设备发送的反馈信息，在接收到网络设备发送的反馈信息时，确定在该第一上行载波上的随机接入请求成功，在未接收到网络设备发送的反馈信息时，确定在该第一上行载波上的随机接入请求失败。
在确定在该第一上行载波上的随机接入请求失败后，可以通过设置的对应第一上行载波的第一计数器获得该第一失败次数，当在该第一上行载波上的随机接入请求失败时，将该第一计数器的计数加1，当在该第一上行载波上的随机接入请求成功时，则将该第一计数器的计数清零；在本步骤中，在确定该随机接入请求失败时，可以将该第一计数器的计数加1，并读取该第一计数器的计数，即可获知该第一失败次数。
在确定该随机接入请求成功时，则在该第一上行载波上发送上行数据。
在确定该随机接入请求失败时，执行步骤S203和步骤S204。
S203、终端获取该随机接入请求失败的第一失败次数。
其中，可以通过设置的对应第一上行载波的第一计数器获得该第一失败次数，当该随机接入在该第一上行载波上请求失败时，将该第一计数器的计数加1，当随机接入在该第一上行载波上请求成功时，则将该第一计数器的计数清零；在本步骤中，在确定该随机接入请求失败时，可以将该第一计数器的计数加1，并读取该第一计数器的计数，即可获知该第一失败次数。
S204、终端确定该第一失败次数是否达到预设门限值。
在确定该第一失败次数未达到预设门限值时，继续在第一上行载波上向网络设备发送随机接入请求。
在确定该第一失败次数达到预设门限值时，执行步骤S205。
需要说明的是，该预设门限值由网络设备或者网管系统进行配置，并告知终端，当预设门限值设置的较低，则意味着终端能够更快的在覆盖更佳的第二上行载波发起上行同步重建，发送上行数据；当预设门限值设置的较低高，则意味着终端能够在原有第一上行载波进行更多尝试，以降低在覆盖更佳的第二上行载波发起上行同步重建的负载压力。
S205、终端从该频段配对组合的第二上行频率范围中确定第一目标上行频率范围。
在本步骤中，可以从该频段配对组合的第二上行频率范围中确定第三上行频率范围，该第三上行频率范围为在该第二上行频率范围中载波频率小于该第一上行载波的频率范围；在确定第三上行频率范围后，可以通过以下两种处理方式中的任一种确定第一目标上行频率范围：一种处理方式是从该第三上行频率范围中确定负载最小的载波对应的上行频率范围，并确定负载最小的载波对应的上行频率范围为该第一目标上行频率范围；另一种处理方式 是从该第三上行频率范围中随机确定一个载波对应的上行频率范围为该第一目标上行频率范围。
在本实施例中，由于第二上行频率范围只有一个，因此可以确定该第二上行频率范围为该第一目标上行频率范围。
S206、终端在该第一目标上行频率范围内的第二上行载波上向该网络设备发送该随机接入请求。
S207、终端确定在第二上行载波上的随机接入请求是否成功。
在确定在第二上行载波上的随机接入请求成功时，在该第二上行载波上发送上行数据。
在确定在第二上行载波上的随机接入请求失败时，执行步骤S210。
S208、终端获取该随机接入请求失败的第二失败次数。
其中，可以通过设置的对应第二上行载波的第二计数器获得该第二失败次数，当该第二上行载波上的随机接入请求失败时，将该第二计数器的计数加1，当在该第二上行载波上的随机接入请求成功时，则将该第二计数器的计数清零；在本步骤中，在确定该随机接入请求失败时，可以将该第二计数器的计数加1，并读取该第二计数器的计数，即可获知该第二失败次数。
S209、终端确定该第二失败次数是否达到预设门限值。
在确定该第二失败次数未达到预设门限值时，继续在第二上行载波上向网络设备发送随机接入请求。
在确定该第二失败次数达到预设门限值时，执行步骤S212。
S210、终端确定无线链路连接失败。
在本实施例中，由于频段组合中的第二上行频率范围已经不存在新的上行频率范围了，因此，在确定该第二失败次数达到预设门限值时，可以确定无线链路连接失败，重新发起小区搜索。
需要说明的是，本实施例是以频段组合包括的第一上行频率范围和第二 上行频率范围各为1个为例进行说明的，本实施例并不局限于此，该频段组合中的第二上行频率范围也可以包括更多的(如包括3个及以上的上行频率范围)上行频率范围，此时，在步骤S209中，终端在确定该第二失败次数达到预设门限值后，可以继续执行以下步骤：
S1、终端确定该频段组合中是否存在新的上行频率范围。
其中，若频段组合中的第二上行频率范围中还存在第四上行频率范围，且终端还未在该第四上行频率范围内的载波上发送过随机接入请求，且第四上行频率范围的载波频率小于已经发送过随机接入请求的上行频率范围，则确定该第四上行频率范围为新的上行频率范围。
S2、在确定存在新的上行频率范围时，从新的上行频率范围中确定目标上行频率范围，并在该目标上行频率范围内的上行载波上向该网络设备发送该随机接入请求，在确定不存在该新的上行频率范围时，则确定无线链路连接失败。
这里，若在目标上行载波上随机接入请求成功，则在该目标上行载波上发送上行数据，若在目标上行载波上随机接入请求失败，则循环执行步骤S1和S2。
采用上述方法，终端能够根据随机接入请求失败的次数切换不同的载波进行连接重建，避免了终端在当前载波发生上行失步时，在当前载波上持续发送随机接入请求进行连接重建，从而能够快速恢复连接，提高连接重建的成功率。
图3为本公开实施例提供的一种连接重建的装置，如图3所示，应用于终端，该装置包括：
第一发送模块301，用于当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，在该第一上行载波上向网络设备发送随机接入请求； 该第一上行载波为在该终端和该网络设备均支持的频率配对组合中由网络设备在该第一上行频率范围内确定的载波；该频段配对组合是由第一上行频率范围和第一下行频率范围组成的第一频段与由至少一个第二上行频率范围组成的补充上行频段联合构成；
获取模块302，用于在该第一上行载波上的随机接入请求失败时，获取该随机接入请求失败的第一失败次数；
确定模块303，用于在该第一失败次数达到预设门限值时，从该频段配对组合的第二上行频率范围中确定第一目标上行频率范围；
第二发送模块304，用于在该第一目标上行频率范围内的第二上行载波上向该网络设备发送该随机接入请求。
可选地，该获取模块302，用于在将该第一上行载波对应的第一计数器加1后，获取该第一计数器记录的数值得到该第一失败次数；其中，该第一计数器用于在该随机接入在该第一上行载波上请求失败时，计数加1；在该随机接入请求发送成功时，将该计数清零。
可选地，该确定模块303，如图4所示，该确定模块303包括：
确定子模块3031，用于从该频段配对组合的第二上行频率范围中确定第三上行频率范围，该第三上行频率范围为在该第二上行频率范围中载波频率小于该第一上行载波的频率范围；
处理子模块3032，用于从该第三上行频率范围中确定负载最小的载波对应的上行频率范围，并确定负载最小的载波对应的上行频率范围为该第一目标上行频率范围；或者，从该第三上行频率范围中随机确定一个载波对应的上行频率范围为该第一目标上行频率范围。
可选地，如图5所示，该装置还包括：
循环模块304，用于继续确定在该第二上行载波上的随机接入请求是否成功；在该第二上行载波上的随机接入请求失败时，获取该随机接入请求失 败的第二失败次数；在该第二失败次数达到该预设门限值时，确定该频段配对组合中的第二上行频率范围内是否存在新的上行频率范围；在确定存在新的上行频率范围时，从该新的上行频率范围中确定第二目标上行频率范围，并在该第二目标上行频率范围内的上行载波上向该网络设备发送该随机接入请求。
可选地，该循环模块304，还用于在确定不存在该新的上行频率范围时，确定无线链路连接失败。
可选地，该循环模块304，还用于在所述第二上行载波上的随机接入请求成功时，在所述第二上行载波上发送上行数据。
采用上述装置，终端能够根据随机接入请求失败的次数切换不同的载波进行连接重建，避免了终端在当前载波发生上行失步时，在当前载波上持续发送随机接入请求进行连接重建，从而能够快速恢复连接，提高连接重建的成功率。
图6是本公开实施例提供的一种连接重建的装置600的结构示意图，该装置600可以被提供为一终端。如图6所示，该装置600可以包括：处理器601，存储器602，多媒体组件603，输入/输出(I/O)接口604，以及通信组件605。
其中，处理器601用于控制该装置600的整体操作，以完成上述连接重建的方法的全部或部分步骤。存储器602用于存储各种类型的数据以支持在该装置600的操作，这些数据例如可以包括用于在该装置600上操作的任何应用程序或方法的指令。
该存储器602可以由任何类型的易失性或非易失性存储终端设备或者它们的组合实现，例如静态随机存取存储器(Static Random Access Memory，简称SRAM)，电可擦除可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，简称EEPROM)，可擦除可编程只读存储 器(Erasable Programmable Read-Only Memory，简称EPROM)，可编程只读存储器(Programmable Read-Only Memory，简称PROM)，只读存储器(Read-Only Memory，简称ROM)，磁存储器，快闪存储器，磁盘或光盘。
多媒体组件603可以包括屏幕和音频组件。其中屏幕例如可以是触摸屏，音频组件用于输出和/或输入音频信号。
通信组件605用于该装置600与其他设备之间进行有线或无线通信。无线通信，例如Wi-Fi，蓝牙，近场通信(Near Field Communication，简称NFC)，2G、3G或4G，或它们中的一种或几种的组合，因此相应的该通信组件605可以包括：Wi-Fi模块，蓝牙模块，NFC模块。
在一示例性实施例中，装置1000可以被一个或多个应用专用集成电路(Application Specific Integrated Circuit，简称ASIC)、数字信号处理器(Digital Signal Processor，简称DSP)、数字信号处理终端设备(Digital Signal Processing Device，简称DSPD)、可编程逻辑器件(Programmable Logic Device，简称PLD)、现场可编程门阵列(Field Programmable Gate Array，简称FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述连接重建的方法。
本公开实施例还提供一种非临时性计算机可读存储介质1，该非临时性计算机可读存储介质1中包括一个或多个程序，该一个或多个程序用于执行一种连接重建的方法，该方法应用于终端，该方法包括：
当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，在该第一上行载波上向网络设备发送随机接入请求；该第一上行载波为在该终端和该网络设备均支持的频率配对组合中由网络设备在该第一上行频率范围内确定的载波；该频段配对组合是由第一上行频率范围和第一下行频率范围组成的第一频段与由至少一个第二上行频率范围组成的补充上行频段联合构成；在所述第一上行载波上的随机接入请求失败时，获取所述随机接 入请求失败的第一失败次数；在所述第一失败次数达到预设门限值时，从所述频段配对组合的第二上行频率范围中确定第一目标上行频率范围，并在所述第一目标上行频率范围内的第二上行载波上向所述网络设备发送所述随机接入请求。
可选地，该获取该随机接入请求失败的第一失败次数包括：在将该第一上行载波对应的第一计数器加1后，获取该第一计数器记录的数值得到该第一失败次数；其中，该第一计数器用于在该随机接入在该第一上行载波上请求失败时，计数加1；在该随机接入请求发送成功时，将该计数清零。
可选地，该从该频段配对组合的第二上行频率范围中确定第一目标上行频率范围包括：从该频段配对组合的第二上行频率范围中确定第三上行频率范围，该第三上行频率范围为在该第二上行频率范围中载波频率小于该第一上行载波的频率范围；从该第三上行频率范围中确定负载最小的载波对应的上行频率范围，并确定负载最小的载波对应的上行频率范围为该第一目标上行频率范围；或者，从该第三上行频率范围中随机确定一个载波对应的上行频率范围为该第一目标上行频率范围。
可选地，在该终端支持的第二上行载波上向该网络设备发送该随机接入请求后，该方法还包括：继续确定在该第二上行载波上的随机接入请求是否成功；在该第二上行载波上的随机接入请求失败时，获取该随机接入请求失败的第二失败次数；在该第二失败次数达到该预设门限值时，确定该频段配对组合中的第二上行频率范围内是否存在新的上行频率范围；在确定存在新的上行频率范围时，从该新的上行频率范围中确定第二目标上行频率范围，并在该第二目标上行频率范围内的上行载波上向该网络设备发送该随机接入请求。
可选地，还包括：在确定不存在该新的上行频率范围时，确定无线链路连接失败。
可选地，该方法还包括：在该第二上行载波上的随机接入请求成功时，在该第二上行载波上发送上行数据。
以上结合附图详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本公开对各种可能的组合方式不再另行说明。
此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开所公开的内容。

Claims (14)

  1. 一种连接重建的方法，其特征在于，应用于终端，包括：
    当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，在所述第一上行载波上向网络设备发送随机接入请求；所述第一上行载波为在所述终端和所述网络设备均支持的频率配对组合中由网络设备在所述第一上行频率范围内确定的载波；所述频段配对组合是由第一上行频率范围和第一下行频率范围组成的第一频段与由至少一个第二上行频率范围组成的补充上行频段联合构成；
    在所述第一上行载波上的随机接入请求失败时，获取所述随机接入请求失败的第一失败次数；
    在所述第一失败次数达到预设门限值时，从所述频段配对组合的第二上行频率范围中确定第一目标上行频率范围，并在所述第一目标上行频率范围内的第二上行载波上向所述网络设备发送所述随机接入请求。
  2. 根据权利要求1所述的方法，其特征在于，所述获取所述随机接入请求失败的第一失败次数包括：
    在将所述第一上行载波对应的第一计数器加1后，获取所述第一计数器记录的数值得到所述第一失败次数；其中，所述第一计数器用于在所述随机接入在所述第一上行载波上请求失败时，计数加1；在所述随机接入请求发送成功时，将所述计数清零。
  3. 根据权利要求1所述的方法，其特征在于，所述从所述频段配对组合的第二上行频率范围中确定第一目标上行频率范围包括：
    从所述频段配对组合的第二上行频率范围中确定第三上行频率范围，所述第三上行频率范围为在所述第二上行频率范围中载波频率小于所述第一 上行载波的频率范围；
    从所述第三上行频率范围中确定负载最小的载波对应的上行频率范围，并确定负载最小的载波对应的上行频率范围为所述第一目标上行频率范围；或者，从所述第三上行频率范围中随机确定一个载波对应的上行频率范围为所述第一目标上行频率范围。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，在所述终端支持的第二上行载波上向所述网络设备发送所述随机接入请求后，所述方法还包括：
    继续确定在所述第二上行载波上的随机接入请求是否成功；在所述第二上行载波上的随机接入请求失败时，获取所述随机接入请求失败的第二失败次数；在所述第二失败次数达到所述预设门限值时，确定所述频段配对组合中的第二上行频率范围内是否存在新的上行频率范围；在确定存在新的上行频率范围时，从所述新的上行频率范围中确定第二目标上行频率范围，并在所述第二目标上行频率范围内的上行载波上向所述网络设备发送所述随机接入请求。
  5. 根据权利要求4所述的方法，其特征在于，还包括：
    在确定不存在所述新的上行频率范围时，确定无线链路连接失败。
  6. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    在所述第二上行载波上的随机接入请求成功时，在所述第二上行载波上发送上行数据。
  7. 一种连接重建的装置，其特征在于，应用于终端，包括：
    第一发送模块，用于当终端在支持的第一上行频段范围内的第一上行载波发生上行失步时，在所述第一上行载波上向网络设备发送随机接入请求；所述第一上行载波为在所述终端和所述网络设备均支持的频率配对组合中由网络设备在所述第一上行频率范围内确定的载波；所述频段配对组合是由第一上行频率范围和第一下行频率范围组成的第一频段与由至少一个第二上行频率范围组成的补充上行频段联合构成；
    获取模块，用于在所述第一上行载波上的随机接入请求失败时，获取所述随机接入请求失败的第一失败次数；
    确定模块，用于在所述第一失败次数达到预设门限值时，从所述频段配对组合的第二上行频率范围中确定第一目标上行频率范围；
    第二发送模块，用于在所述第一目标上行频率范围内的第二上行载波上向所述网络设备发送所述随机接入请求。
  8. 根据权利要求7所述的装置，其特征在于，所述获取模块，用于在将所述第一上行载波对应的第一计数器加1后，获取所述第一计数器记录的数值得到所述第一失败次数；其中，所述第一计数器用于在所述随机接入在所述第一上行载波上请求失败时，计数加1；在所述随机接入请求发送成功时，将所述计数清零。
  9. 根据权利要求7所述的装置，其特征在于，所述确定模块，包括：
    确定子模块，用于从所述频段配对组合的第二上行频率范围中确定第三上行频率范围，所述第三上行频率范围为在所述第二上行频率范围中载波频率小于所述第一上行载波的频率范围；
    处理子模块，用于从所述第三上行频率范围中确定负载最小的载波对应的上行频率范围，并确定负载最小的载波对应的上行频率范围为所述第一目 标上行频率范围；或者，从所述第三上行频率范围中随机确定一个载波对应的上行频率范围为所述第一目标上行频率范围。
  10. 根据权利要求7至9任一项所述的装置，其特征在于，所述装置还包括：
    循环模块，用于继续确定在所述第二上行载波上的随机接入请求是否成功；在所述第二上行载波上的随机接入请求失败时，获取所述随机接入请求失败的第二失败次数；在所述第二失败次数达到所述预设门限值时，确定所述频段配对组合中的第二上行频率范围内是否存在新的上行频率范围；在确定存在新的上行频率范围时，从所述新的上行频率范围中确定第二目标上行频率范围，并在所述第二目标上行频率范围内的上行载波上向所述网络设备发送所述随机接入请求。
  11. 根据权利要求10所述的装置，其特征在于，所述循环模块，还用于在确定不存在所述新的上行频率范围时，确定无线链路连接失败。
  12. 根据权利要求10所述的装置，其特征在于，所述循环模块，还用于在所述第二上行载波上的随机接入请求成功时，在所述第二上行载波上发送上行数据。
  13. 一种非临时性计算机可读存储介质，其特征在于，所述非临时性计算机可读存储介质中包括一个或多个程序，所述一个或多个程序用于执行权利要求1至6中任一项所述的方法。
  14. 一种终端，其特征在于，包括：
    权利要求13中所述的非临时性计算机可读存储介质；以及
    一个或者多个处理器，用于执行所述非临时性计算机可读存储介质中的程序。
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