CN106804050B - Network switching method and device - Google Patents
Network switching method and device Download PDFInfo
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- CN106804050B CN106804050B CN201710114617.XA CN201710114617A CN106804050B CN 106804050 B CN106804050 B CN 106804050B CN 201710114617 A CN201710114617 A CN 201710114617A CN 106804050 B CN106804050 B CN 106804050B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0088—Scheduling hand-off measurements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The application discloses a network switching method and device, relates to the technical field of communication, and can achieve the function that a terminal returns to an LTE network from an eHRPD network in a connected state, and improve user experience. The network switching method comprises the following steps: after a terminal enters a dormant state, the terminal closes a transmission function of a data service and starts a timer, wherein the timer is used for controlling the time length for closing the transmission function of the data service; before the timing duration of the timer reaches a preset duration, the terminal performs Long Term Evolution (LTE) neighbor cell measurement; and when the terminal has the LTE adjacent area, the terminal reselects to the LTE network. The method and the device are suitable for the process of transmitting the data service by the terminal.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for network handover.
Background
At present, a Long Term Evolution (LTE) network of a universal mobile telecommunications technology is in an initial development stage, LTE network signal coverage is not perfect, and signal strength is not stable enough. Therefore, to ensure the continuity of the data service, the terminal inevitably switches to the 3G network with strong signal coverage when the LTE network has weak signal strength, for example: code Division Multiple Access (CDMA) networks. And when the signal strength of the LTE network is strong, the terminal needs to be switched back to the LTE network from the 3G network.
In order to implement seamless handover between the CDMA network and the LTE network, an evolved High Rate Packet Data (eHRPD) network is introduced into the CDMA network to implement an interworking process between the CDMA network and the LTE network.
Based on different Radio Resource Control (RRC) connection states of the terminal, the operation flows returned from the eHRPD network to the LTE network are also different. In the existing standard protocol, the procedure for returning the terminal from the eHRPD network to the LTE network in the connected state is specified as follows: the eHRPD network indicates the terminal to upload an LTE adjacent cell measurement report, sends a redirection message to the terminal after receiving the LTE adjacent cell measurement report reported by the terminal, and the terminal is switched to an LTE cell according to the redirection message to return to the LTE network. However, in practical applications, most terminals do not support the above procedure, or even LTE neighbor measurement in a connected state. Therefore, after the terminal is switched to the eHRPD network, if the terminal is always in a connected state, the terminal cannot report an LTE neighbor measurement report to the network side, and thus the switching from the eHRPD network to the LTE network cannot be completed, which affects user experience.
Disclosure of Invention
The application provides a network switching method and device, which can realize the function that a terminal returns to an LTE network from an eHRPD network in a connected state, and improve user experience.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, the present application provides a method for network handover, including:
after a terminal enters a dormant state, the terminal closes a transmission function of a data service and starts a timer, wherein the timer is used for controlling the time length for closing the transmission function of the data service;
before the timing duration of the timer reaches a preset duration, the terminal performs Long Term Evolution (LTE) neighbor cell measurement;
and when the terminal has the LTE adjacent area, the terminal reselects to the LTE network.
In a second aspect, the present application provides an apparatus for network handover, including:
the terminal comprises a control unit, a timer and a processing unit, wherein the control unit is used for closing the transmission function of the data service and starting the timer after the terminal enters a dormant state, and the timer is used for controlling the time length for closing the transmission function of the data service;
the measurement unit is used for measuring the LTE (long term evolution) adjacent cell before the timing duration of the timer reaches the preset duration;
and the processing unit is used for reselecting the terminal to the LTE network when the measurement unit determines that the terminal has the LTE neighboring cell.
According to the network switching method and device, after the terminal enters the dormant state, the transmission function of the data service is closed, and the timer is started. And carrying out LTE (Long term evolution) neighbor cell measurement before the timing duration of the timer reaches the preset duration. And when the terminal has the LTE adjacent cell, reselecting the LTE adjacent cell. Compared with the prior art, most terminals do not support the switching process in the connection state in the standard protocol, or even support the LTE neighbor measurement function in the connection state, so that the terminals cannot complete the switching from the eHRPD network to the LTE network in the connection state. In the method, the transmission function of the data service of the terminal is closed after the terminal enters the dormant state in the connection state of the terminal, so that the time of the terminal in the dormant state is prolonged, the time of the terminal for detecting the LTE adjacent region is prolonged, enough time is reserved for the terminal to reselect to the LTE network, the terminal can return to the LTE network from the eHRPD network in the connection state, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a network handover method provided in the present application;
fig. 2 is a flowchart of another network handover method provided in the present application;
fig. 3 is a flowchart of another network handover method provided in the present application;
fig. 4 is a schematic structural diagram of a network switching apparatus provided in the present application;
fig. 5 is a schematic structural diagram of another network switching device provided in the present application;
fig. 6 is a schematic structural diagram of a network handover terminal according to the present application.
Detailed Description
The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For better understanding of the present application, the idle state, the connected state, and the dormant state of the terminal are briefly described as follows:
in the existing standard protocol, the operation mode of a terminal is divided into an idle mode (idle state for short) and a connected mode (connected state for short) according to whether the terminal establishes Radio Resource Control (RRC) connection with a network side access device. When the terminal does not establish RRC connection with the network side access device, the terminal is in an idle state, and data transmission cannot be performed at this time. After the terminal establishes RRC connection with the network side access equipment, the terminal is in a connected state, and data transmission can be carried out at any time. After the terminal establishes RRC connection with the network side access device, there is a dormant mode, referred to as dormant mode for short, and there is no data transmission. There is usually a sleep state timer to control the terminal to enter into the sleep state. And if the terminal does not transmit data all the time within the duration determined by the dormant state timer, the terminal enters a dormant state.
The present application provides a network switching method, as shown in fig. 1, including:
101. and when the terminal enters a dormant state, the terminal closes the transmission function of the data service and starts a timer.
Wherein the timer is used for controlling the duration of closing the transmission function of the data service.
As a specific embodiment, after the terminal enters the dormant state, the terminal may perform LTE neighbor measurement to determine whether the terminal has an LTE neighbor. If the LTE adjacent cell exists, the terminal can directly initiate a reselection process to the LTE adjacent cell so as to reselect to the LTE network.
However, in practical applications, in a service scenario where the data volume is small and the data volume is bursty, such as services of QQ, wechat, web browsing, and the like, the terminal has enough time to complete reselection to the LTE network. However, in a service scenario with a large data volume, such as video, due to continuous and frequent data transmission, the terminal may leave the dormant state without completing the LTE neighbor cell measurement, and thus cannot complete reselection to the LTE network. Therefore, in order to prolong the time of the terminal in the dormant state, the terminal needs to close the transmission function of the data service and start the timer, and the terminal is forced to keep the dormant state within the timing duration set by the timer, so that the terminal has enough time to perform the LTE neighbor cell measurement and reselect to the LTE network.
102. And before the timing duration of the timer reaches the preset duration, the terminal performs Long Term Evolution (LTE) neighbor cell measurement.
The preset time length can be set according to the characteristics of the terminal, the configuration of the network or the service requirement, so that the terminal can be ensured to have enough time to reselect the LTE network, and the interruption of the data service can be ensured without bringing great influence and inconvenience to the user.
As a specific embodiment, before the timing duration of the timer reaches the preset duration, the terminal performs LTE neighbor measurement. Specifically, the terminal may periodically search for nearby LTE network signals. And after the LTE network signal is searched, further judging whether the signal strength reaches a preset threshold value. And if so, indicating that the searched LTE network signal is an effective signal, and determining that the cell where the LTE network signal is located is an LTE adjacent cell of the terminal. The preset threshold may be set according to a system configuration, and is not limited herein.
103. And when the terminal has the LTE adjacent area, the terminal reselects to the LTE network.
As a specific embodiment, after the terminal performs LTE neighbor measurement, the LTE neighbor is determined, which indicates that the normal transmission of data services can be ensured after the terminal reselects to the LTE network. Therefore, the terminal initiates a reselection process to the LTE neighboring cell to reselect to the LTE network.
According to the network switching method, after the terminal enters the dormant state, the transmission function of the data service is closed, and the timer is started. And carrying out LTE (Long term evolution) neighbor cell measurement before the timing duration of the timer reaches the preset duration. And when the terminal has the LTE adjacent cell, reselecting the LTE adjacent cell. Compared with the prior art, most terminals do not support the switching process in the connection state in the standard protocol, or even support the LTE neighbor measurement function in the connection state, so that the terminals cannot complete the switching from the eHRPD network to the LTE network in the connection state. In the method, the transmission function of the data service of the terminal is closed after the terminal enters the dormant state in the connection state of the terminal, so that the time of the terminal in the dormant state is prolonged, the time of the terminal for detecting the LTE adjacent region is prolonged, enough time is reserved for the terminal to reselect to the LTE network, the terminal can return to the LTE network from the eHRPD network in the connection state, and the user experience is improved.
Further, in order to ensure the continuity of the data service, on the basis shown in fig. 1, as shown in fig. 2, the present application further includes a step 201, as follows:
201. and when the timing time length reached by the timer reaches a preset time length, the terminal starts the transmission function of the data service.
As a specific embodiment, when the timing duration of the timer reaches the preset duration, the LTE neighboring cell of the terminal is still not detected, and the terminal does not successfully reselect to the LTE network. In order to not affect the continuity of the data service, the terminal needs to start the transmission function of the data service and continue to transmit the data service in the original network.
Further, in order to ensure the success rate of the terminal reselecting to the LTE network, as shown in fig. 3, before "the terminal closes the transmission function of the data service and starts the timer" in step 101, the present application further includes a step of determining that the terminal originally resides in the network, so that the implementation of step 101 may be replaced by steps 301 to 302:
301. and when the terminal enters a dormant state, determining whether the terminal is in an evolved high rate packet data (eHRPD) network.
It should be noted that, at present, three different 3G communication standards are adopted in China, including Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) adopted by china mobile, Wideband Code Division Multiple Access (W-CDMA) adopted by china communication, and Code Division Multiple Access 2000(Code Division Multiple Access 2000, CDMA2000) adopted by china telecom. Different 3G communication standards also have different definitions for handover procedures from 3G to LTE, and this embodiment can be adapted to CDMA2000, so determining whether the terminal resides in the eHRPD network first can improve the success rate of reselecting the terminal to the LTE network.
Optionally, after the terminal enters the dormant state, before determining whether the terminal resides in the eHRPD network, the terminal may also perform LTE neighbor cell measurement, and when the terminal has an LTE neighbor cell, reselecting to the LTE network without performing the following steps; and when the terminal does not have the LTE adjacent area, judging whether the terminal resides in the eHRPD network.
302. And when the terminal is determined to reside in the eHRPD network, suspending the data service of the terminal and starting a timer.
Optionally, if it is determined that the terminal does not reside in the eHRPD network, the following steps are no longer required.
The present application further provides a network switching apparatus 40, as shown in fig. 4, the apparatus includes:
the control unit 41 is configured to close a transmission function of a data service and start a timer after the terminal enters a dormant state, where the timer is configured to control a duration of closing the transmission function of the data service.
And the measuring unit 42 is configured to perform long term evolution LTE neighbor cell measurement before the timing duration of the timer reaches a preset duration.
And the processing unit 43 is configured to reselect to the LTE network when the measuring unit 42 determines that the terminal has an LTE neighboring cell.
According to the network switching device, after the terminal enters the dormant state, the transmission function of the data service is closed, and the timer is started. And carrying out LTE (Long term evolution) neighbor cell measurement before the timing duration of the timer reaches the preset duration. And when the terminal has the LTE adjacent cell, reselecting the LTE adjacent cell. Compared with the prior art, most terminals do not support the switching process in the connection state in the standard protocol, or even support the LTE neighbor measurement function in the connection state, so that the terminals cannot complete the switching from the eHRPD network to the LTE network in the connection state. In the method, the transmission function of the data service of the terminal is closed after the terminal enters the dormant state in the connection state of the terminal, so that the time of the terminal in the dormant state is prolonged, the time of the terminal for detecting the LTE adjacent region is prolonged, enough time is reserved for the terminal to reselect to the LTE network, the terminal can return to the LTE network from the eHRPD network in the connection state, and the user experience is improved.
Further, the control unit 41 is further configured to start the transmission function of the data service after the timing duration of the timer reaches a preset duration.
Further, as shown in fig. 5, the apparatus 40 further includes: a determining unit 51, configured to determine, after the terminal enters the dormant state, whether the terminal resides in an evolved high rate packet data eHRPD network before the controlling unit 41 closes a transmission function of a data service and starts a timer.
The control unit 41 is further configured to close a transmission function of the data service and start a timer when the determining unit 51 determines that the terminal resides in the eHRPD network.
Further, the measuring unit 42 is further configured to perform LTE neighbor measurement after the terminal enters the dormant state, before the determining unit 51 determines whether the terminal resides in the evolved high rate packet data eHRPD network.
The processing unit 43 is further configured to reselect to the LTE network when the measuring unit 42 determines that the terminal has an LTE neighboring cell.
The determining unit 51 is further configured to determine whether the terminal resides in the eHRPD network when the measuring unit 42 determines that the terminal does not have an LTE neighboring cell.
Further, the measuring unit 42 is further configured to periodically search for an LTE network signal, and measure the strength of the LTE network signal; and when the strength of the LTE network signal reaches a preset threshold value, determining that the cell in which the LTE network signal is located is an LTE adjacent cell of the terminal.
The judging unit is further configured to judge whether the terminal resides in the eHRPD network when the measuring unit determines that the terminal does not have an LTE neighboring cell.
As shown in fig. 6, the present application provides a terminal including: a processor 601, a memory 602, a transceiver 603, and a bus 604, the processor 601, the memory 602, and the transceiver 603 communicating with each other through the bus 604. The memory 602 is configured to store a plurality of instructions to implement the network handover method provided by the present application, and the processor 601 executes the plurality of instructions to implement that, after the terminal enters the sleep state, the transmission function of the data service is turned off and a timer is started; carrying out Long Term Evolution (LTE) neighbor cell measurement before the timing duration of the timer reaches a preset duration; and when the terminal has the LTE adjacent cell, reselecting to the LTE network. Wherein the timer is used for controlling the duration of closing the transmission function of the data service.
Further, the processor 601 is further configured to start a transmission function of the data service after the timing duration of the timer reaches a preset duration.
Further, the processor 601 is further configured to determine whether the terminal resides in an evolved high rate packet data eHRPD network after the terminal enters the dormant state and before the terminal closes a transmission function of a data service and starts a timer; and when the terminal resides in the eHRPD network, closing the transmission function of the data service and starting a timer.
Further, the processor 601 is further configured to perform LTE neighbor measurement after the terminal enters the dormant state and before the determining whether the terminal resides in the evolved high rate packet data eHRPD network; when the terminal has an LTE adjacent cell, reselecting to an LTE network; and when the terminal does not have the LTE adjacent area, judging whether the terminal resides in the eHRPD network.
Further, the processor 601 is further configured to periodically search for an LTE network signal and measure the strength of the LTE network signal; and when the strength of the LTE network signal reaches a preset threshold value, determining that the cell in which the LTE network signal is located is an LTE adjacent cell of the terminal.
The processor 601 described herein may be a single processor or a combination of multiple processing elements. For example, the processor 601 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement the present Application, such as: one or more microprocessors (digital signal processors, DSP for short), or one or more Field Programmable gate arrays (FPGA for short).
The memory 602 may be a single storage device or a combination of storage elements, and is used for storing executable program codes and the like. And the memory 602 may include a Random Access Memory (RAM) and may also include a non-volatile memory (non-volatile memory), such as a magnetic disk memory, Flash memory (Flash), and the like.
The bus 604 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus 604 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 6, but this is not intended to represent only one bus or type of bus.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus embodiment, since it is substantially similar to the method embodiment, it is relatively simple to describe, and reference may be made to some descriptions of the method embodiment for relevant points.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (6)
1. A method of network handover, comprising:
after a terminal enters a dormant state, the terminal performs LTE (Long term evolution) neighbor cell measurement; when the terminal has an LTE adjacent cell, the terminal reselects to an LTE network; when the terminal does not have an LTE adjacent area, judging whether the terminal resides in an eHRPD network;
when the terminal resides in an eHRPD network, the terminal closes the transmission function of the data service and starts a timer, wherein the timer is used for controlling the time length for closing the transmission function of the data service;
before the timing duration of the timer reaches a preset duration, the terminal performs Long Term Evolution (LTE) neighbor cell measurement;
and when the terminal has the LTE adjacent area, the terminal reselects to the LTE network.
2. The method of claim 1, further comprising: and when the timing duration of the timer reaches a preset duration, the terminal starts the transmission function of the data service.
3. The method according to claim 1 or 2, wherein the terminal performing long term evolution, LTE, neighbor cell measurements comprises:
the terminal periodically searches for LTE network signals and measures the strength of the LTE network signals;
and when the strength of the LTE network signal reaches a preset threshold value, determining that the cell in which the LTE network signal is located is an LTE adjacent cell of the terminal.
4. An apparatus for network handover, comprising:
the terminal comprises a control unit, a timer and a processing unit, wherein the control unit is used for closing the transmission function of the data service and starting the timer after the terminal enters a dormant state, and the timer is used for controlling the time length for closing the transmission function of the data service;
the measurement unit is used for measuring the LTE (long term evolution) adjacent cell before the timing duration of the timer reaches the preset duration;
the processing unit is used for reselecting the terminal to an LTE network when the measuring unit determines that the terminal has an LTE neighboring cell;
a determining unit, configured to determine, after the terminal enters a dormant state, whether the terminal resides in an evolved high rate packet data eHRPD network before the control unit closes a transmission function of a data service and starts a timer;
the control unit is further configured to close a transmission function of the data service and start a timer when the determining unit determines that the terminal is residing in the eHRPD network;
the measurement unit is further configured to perform LTE neighbor measurement before the determination unit determines whether the terminal resides in the evolved high rate packet data eHRPD network after the terminal enters the dormant state;
the processing unit is further configured to reselect to an LTE network when the measurement unit determines that the terminal has an LTE neighboring cell;
the judging unit is further configured to judge whether the terminal resides in the eHRPD network when the measuring unit determines that the terminal does not have an LTE neighboring cell.
5. The apparatus of claim 4, wherein the control unit is further configured to start the transmission function of the data service after the timing duration of the timer reaches a preset duration.
6. The apparatus according to claim 4 or 5, wherein the measuring unit is further configured to periodically search for an LTE network signal and measure the strength of the LTE network signal;
and when the strength of the LTE network signal reaches a preset threshold value, determining that the cell in which the LTE network signal is located is an LTE adjacent cell of the terminal.
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| CN201710114617.XA CN106804050B (en) | 2017-02-28 | 2017-02-28 | Network switching method and device |
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| CN201710114617.XA CN106804050B (en) | 2017-02-28 | 2017-02-28 | Network switching method and device |
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| CN107466080A (en) * | 2017-08-22 | 2017-12-12 | 深圳市万普拉斯科技有限公司 | Network reselection method, device, computer-readable recording medium and mobile terminal |
| CN107948997B (en) * | 2017-12-01 | 2021-11-26 | Oppo广东移动通信有限公司 | Method and device for detecting network access result and computer storage medium |
| CN107948998B (en) * | 2017-12-01 | 2021-08-17 | Oppo 广东移动通信有限公司 | Method and device for detecting network access result and computer storage medium |
| CN110312267B (en) * | 2018-03-27 | 2023-03-21 | 维沃移动通信有限公司 | Method and apparatus for switching bandwidth parts |
| CN114449688A (en) * | 2020-10-30 | 2022-05-06 | 华为技术有限公司 | RRC connection release control method and device |
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