CN106358251B - Network switching method and terminal equipment - Google Patents

Network switching method and terminal equipment Download PDF

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Publication number
CN106358251B
CN106358251B CN201610742164.0A CN201610742164A CN106358251B CN 106358251 B CN106358251 B CN 106358251B CN 201610742164 A CN201610742164 A CN 201610742164A CN 106358251 B CN106358251 B CN 106358251B
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cell
cells
frequency
frequency point
terminal device
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CN106358251A (en
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庞夫东
阳思聪
贾婧
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention discloses a network switching method and terminal equipment, wherein the method comprises the following steps: the terminal equipment respectively measures N adjacent cells in a measuring adjacent cell list issued by a network to obtain N adjacent cell measured values, wherein N is a positive integer; if the measured values of the N adjacent cells are all smaller than or equal to a first preset threshold value, the terminal equipment searches M frequency points corresponding to the N adjacent cells to obtain all cells under the M frequency points, wherein M is a positive integer smaller than or equal to N. By adopting the invention, the problem of larger power consumption caused by that the terminal equipment directly searches all cells under all frequency points configured by the network can be avoided, and the better power saving of the terminal equipment is facilitated.

Description

Network switching method and terminal equipment
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a network switching method and a terminal device.
Background
The Global System for Mobile communication (GSM) System is one of the second generation Mobile communication systems (2G), the Wideband Code Division Multiple Access (WCDMA) is one of the third generation Mobile communication systems (3G), the GSM network is the earliest one, the network coverage is wide, and it can provide stable basic services such as voice and short message, but its data service carrying capability is poor. The existing terminal equipment can generally support various applications, and when the coverage of the WCDMA network is good, the terminal equipment can generally obtain better user experience when residing on the WCDMA network.
In practical application, an operator can configure a WCDMA neighboring cell for a GSM cell, and once a terminal device enters an area with better coverage of a WCDMA network, the terminal device can smoothly reselect from the GSM cell to the WCDMA cell in an autonomous measurement and reselection manner, so as to obtain better user experience.
However, in the actual Network deployment, there may be some defects, for example, a region has signals covered by Universal telecommunications Access Network (UTRAN), but the Network side does not add the WCDMA cells with signals to the neighbor list of the GSM cell, but adds some cells which are at the same frequency point as the GSM cell and have no signals to the neighbor list of the GSM cell. This would make it difficult for the terminal device to reselect to the WCDMA network in the conventional manner once it camps on the GSM cell. The terminal device may go out of the service area, the internet surfing speed is slow, and the like, which may affect the user experience.
For example, the WCDMA neighboring cells configured for the GSM cell by the network side have: f1 frequency point down scrambling code is ID11, two cells of ID12 and F2 frequency point down scrambling code is ID21, two cells of ID 22. Suppose that the actual existing WCDMA cells around a GSM cell are two cells with scrambling codes ID13 and ID14 under the frequency of F1. In the prior art, the method for searching the available WCDMA cells by the terminal device is as follows: the terminal device residing on the GSM network measures all WCDMA frequency points configured by the network side in an idle state, that is, after acquiring the WCDMA neighboring cells issued by the network side, the terminal device ignores the scrambling code information of the neighboring cells configured by the network side in the idle state, and directly searches all cells under the F1 and F2 frequency points. The prior art has the defects that: the terminal equipment directly searches all cells under all frequency points configured at the network side, which can generate larger power consumption, and is not beneficial to better power saving of the terminal equipment in an idle state.
Disclosure of Invention
The embodiment of the invention provides a network switching method and terminal equipment, which can avoid the problem of higher power consumption caused by the fact that the terminal equipment directly searches all cells under all frequency points configured by a network, and are beneficial to better power saving of the terminal equipment.
In a first aspect, the present invention provides a network handover method. The method comprises the following steps: the terminal device measures N adjacent cells in a measured adjacent cell list issued by a network respectively to obtain N adjacent cell measured values, wherein N is a positive integer. If the measured values of the N adjacent cells are all smaller than or equal to a first preset threshold value, the terminal equipment searches M frequency points corresponding to the N adjacent cells to obtain all cells under the M frequency points, wherein M is a positive integer smaller than or equal to N. When the terminal device measures that the measured values of the N neighboring cells in the neighboring cell list are all lower than a first preset threshold, that is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, in order to ensure that the terminal device can search for an effective cell, the terminal device triggers the search of the neighboring cell frequency point configured by the network instead of directly searching all the cells on the neighboring cell frequency point configured by the network, so that the power consumption of the terminal device is reduced, and the terminal device is favorable for better power saving.
With reference to the first aspect, in a first implementation manner of the first aspect, before the terminal device searches M frequency points corresponding to N neighboring cells and obtains all cells under the M frequency points, the terminal device further measures the M frequency points respectively to obtain a frequency point measurement value of each frequency point. And if the measured values of the N adjacent cells are all smaller than or equal to a first preset threshold value and the measured value of the frequency point of a target frequency point in the M frequency points is larger than or equal to a second preset threshold value, the terminal equipment searches the target frequency point to obtain all cells under the target frequency point. The terminal equipment can identify the network deployment abnormity. That is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, it may further determine whether there are other cells that may be available in the surrounding environment. When the energy of a certain frequency point is high, it can be determined that there may be available cells on the frequency point, and the terminal device starts to search all cells under the frequency point only under the condition that there are other available cells. Invalid search behavior can be reduced and power consumption can be reduced under the condition that no other available cells exist. And only all cells under the target frequency point with larger frequency point measurement value are searched, and cells under other frequency points with smaller frequency point measurement value are not searched, so that the search behavior of invalid frequency points is reduced, and the power consumption is reduced.
With reference to the first aspect or the first implementation manner of the first aspect, in a second implementation manner of the first aspect, a cell reselection procedure performed by a terminal device is described. The terminal equipment searches M frequency points corresponding to N adjacent cells, and measures all cells under the M frequency points after obtaining all cells under the M frequency points to obtain O adjacent cell measured values, wherein O is a positive integer larger than N. And the terminal equipment selects a target cell meeting the cell reselection condition according to the O adjacent cell measurement values. And the terminal equipment reselects the target cell, and if the terminal equipment fails to reselect the target cell and the target cell is other neighbor cells except the neighbor cells in the measured neighbor cell list, the terminal equipment refuses to reselect the target cell again within preset time. That is to say, when the terminal device encounters a situation that reselection of other cells outside the neighboring cell list configured by the network fails during reselection, the terminal device only punishs the failed cell, and does not affect reselection behaviors of other cells having the same frequency as the failed cell, so that negative effects on cells at other same frequency points are small.
In a second aspect, the present invention provides a terminal device, including: a processor, a memory and a radio frequency module. The memory is used for storing network switching program codes, and the processor is used for calling the network switching program codes and executing the following operations: the processor measures N adjacent cells in a measured adjacent cell list issued by a network through a radio frequency module to obtain N adjacent cell measured values, wherein N is a positive integer. If the measured values of the N adjacent cells are all smaller than or equal to a first preset threshold value, the processor searches M frequency points corresponding to the N adjacent cells through the radio frequency module to obtain all cells under the M frequency points, wherein M is a positive integer smaller than or equal to N. When the terminal device measures that the measured values of the N neighboring cells in the neighboring cell list are all lower than a first preset threshold, that is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, in order to ensure that the terminal device can search for an effective cell, the terminal device triggers the search of the neighboring cell frequency point configured by the network instead of directly searching all the cells on the neighboring cell frequency point configured by the network, so that the power consumption of the terminal device is reduced, and the terminal device is favorable for better power saving.
With reference to the second aspect, in a first implementation manner of the second aspect, before the processor searches M frequency points corresponding to N neighboring cells through the radio frequency module and obtains all cells under the M frequency points, the processor further measures the M frequency points through the radio frequency module, so as to obtain a frequency point measurement value of each frequency point. And if the measured values of the N adjacent cells are less than or equal to a first preset threshold value and the measured value of the frequency point of a target frequency point in the M frequency points is greater than or equal to a second preset threshold value, the processor searches the target frequency point through the radio frequency module to obtain all cells under the target frequency point. The terminal equipment can identify the network deployment abnormity. That is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, it may further determine whether there are other cells that may be available in the surrounding environment. When the energy of a certain frequency point is high, it can be determined that there may be available cells on the frequency point, and the terminal device starts to search all cells under the frequency point only under the condition that there are other available cells. Invalid search behavior can be reduced and power consumption can be reduced under the condition that no other available cells exist. And only all cells under the target frequency point with larger frequency point measurement value are searched, and cells under other frequency points with smaller frequency point measurement value are not searched, so that the search behavior of invalid frequency points is reduced, and the power consumption is reduced.
With reference to the second aspect or the first implementation manner of the second aspect, in a second implementation manner of the second aspect, a cell reselection procedure performed by a terminal device is described. The processor searches M frequency points corresponding to N adjacent cells through the radio frequency module, and after all cells under the M frequency points are obtained, the processor measures all the cells under the M frequency points through the radio frequency module to obtain O adjacent cell measured values, wherein O is a positive integer larger than N. And the processor selects a target cell meeting the cell reselection condition according to the O adjacent cell measurement values. The processor reselects the target cell through the radio frequency module, and if the target cell fails to be reselected and is other neighbor cells except the neighbor cells in the measured neighbor cell list, the processor controls the terminal device to refuse to reselect the target cell again within preset time. That is to say, when the terminal device encounters a situation that reselection of other cells outside the neighboring cell list configured by the network fails during reselection, the terminal device only punishs the failed cell, and does not affect reselection behaviors of other cells having the same frequency as the failed cell, so that negative effects on cells at other same frequency points are small.
In a third aspect, an embodiment of the present invention provides a terminal device, which includes a first measurement module and a search module. The first measurement module is used for respectively measuring N adjacent cells in a measurement adjacent cell list issued by a network to obtain N adjacent cell measurement values, wherein N is a positive integer; and the searching module is used for searching M frequency points corresponding to the N adjacent cells to obtain all cells under the M frequency points if the N adjacent cell measured values obtained by the first measuring module are all smaller than or equal to a first preset threshold value, wherein M is a positive integer smaller than or equal to N. When the terminal device measures that the measured values of the N neighboring cells in the neighboring cell list are all lower than a first preset threshold, that is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, in order to ensure that the terminal device can search for an effective cell, the terminal device triggers the search of the neighboring cell frequency point configured by the network instead of directly searching all the cells on the neighboring cell frequency point configured by the network, so that the power consumption of the terminal device is reduced, and the terminal device is favorable for better power saving.
With reference to the third aspect, in a first implementation manner of the third aspect, the method further includes: the second measurement module is used for respectively measuring the M frequency points to obtain a frequency point measurement value of each frequency point; the search module is specifically configured to: and if the measured values of the N adjacent cells obtained by the first measuring module are all smaller than or equal to a first preset threshold value and the measured value of the frequency point of a target frequency point in the M frequency points obtained by the second measuring module is larger than or equal to a second preset threshold value, searching the target frequency point to obtain all cells under the target frequency point. The terminal equipment can identify the network deployment abnormity. That is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, it may further determine whether there are other cells that may be available in the surrounding environment. When the energy of a certain frequency point is high, it can be determined that there may be available cells on the frequency point, and the terminal device starts to search all cells under the frequency point only under the condition that there are other available cells. Invalid search behavior can be reduced and power consumption can be reduced under the condition that no other available cells exist. And only all cells under the target frequency point with larger frequency point measurement value are searched, and cells under other frequency points with smaller frequency point measurement value are not searched, so that the search behavior of invalid frequency points is reduced, and the power consumption is reduced.
With reference to the third aspect, or the first implementation manner of the third aspect, in a second implementation manner of the third aspect, the method further includes: the third measurement module is used for measuring all cells under M frequency points to obtain O adjacent cell measurement values, wherein O is a positive integer larger than N; a selection module, configured to select a target cell that meets a cell reselection condition according to the O neighboring cell measurement values obtained by the third measurement module; and the reselection module is used for controlling the terminal equipment to reselect the target cell, and if the reselection to the target cell fails and the target cell is other neighbor cells except the neighbor cell in the measured neighbor cell list, the control terminal equipment refuses to reselect the target cell again within the preset time. That is to say, when the terminal device encounters a situation that reselection of other cells outside the neighboring cell list configured by the network fails during reselection, the terminal device only punishs the failed cell, and does not affect reselection behaviors of other cells having the same frequency as the failed cell, so that negative effects on cells at other same frequency points are small.
In a fourth aspect, embodiments of the present invention further provide a computer storage medium, where the storage medium may be nonvolatile, that is, the content is not lost after power is turned off. The storage medium stores therein a software program which, when read and executed by one or more processors, may implement the method provided by the first aspect or any one of the implementations of the first aspect described above.
With reference to any of the above aspects, in some implementations of the present invention, the cell in which the terminal device currently resides is a GSM cell, and the N neighboring cells are WCDMA cells.
In some implementations of the invention, in combination with any of the above aspects, the neighbor measurement value is Received Signal Code Power (RSCP), which reflects the Received energy of the terminal device on the cell. The frequency point measurement value refers to the Received Signal Strength (RSSI), which reflects the Received energy of the terminal device at the frequency point.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a first terminal device according to an embodiment of the present invention;
FIG. 2 is a diagram of an application scenario to which an embodiment of the invention relates;
fig. 3 is a flowchart illustrating a network handover method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second terminal device according to an embodiment of the present invention.
Detailed Description
The terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention.
The network switching method provided by the embodiment of the invention is mainly applied to Terminal Equipment, and the Terminal Equipment can also be called User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (Mobile Terminal) and the like. Optionally, the terminal device may have a capability of communicating with one or more core networks through a Radio Access Network (RAN). For example, the terminal device may be a mobile telephone (or so-called "cellular" telephone), or a computer of a mobile nature, or the like. The terminal equipment may also be a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device. It should be understood that the network switching method provided by the embodiment of the present invention can be applied to other types of computer systems besides the terminal device.
Fig. 1 is a schematic structural diagram of a terminal device according to a first embodiment of the present invention. The terminal device 100 in this embodiment may include: at least one processor 101, a radio frequency module 102, an antenna 103, a memory 104, an input-output module (including an audio input-output module 105, a key input module 106, a display 107, etc.), and a user interface 108. In some embodiments of the invention, these components may be connected by a bus or other means. The rf module 102 includes a Radio Frequency Front End (RFFE) 1021 and a Radio Frequency Integrated Circuit (RFIC) 1022.
The Processor 101 may be a general-purpose Processor, such as a Central Processing Unit (CPU), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention. Processor 101 may process data received through radio frequency module 102. Processor 101 may also process data to be sent to radio frequency module 102 for transmission through antenna 103.
The rf module 102 modulates the transmission data from the processor 101 and transmits the modulated transmission data on the antenna 103 (transmission path), or demodulates an air interface signal received by the antenna 103 and transmits the demodulated signal to the processor 101 for processing by a communication protocol (reception path).
RFFE 1021 includes: a duplexer for coupling both the transmitting path and the receiving path to the antenna 103, so that the antenna 103 can transmit or receive or transmit and receive simultaneously, and a Power Amplifier (PA). The PA is used primarily for power amplification of the transmitted signal on the transmit path so that it may be transmitted from the antenna 103.
The RFIC is a modem unit for converting a low frequency signal into a high frequency RF signal on the transmit path (i.e., up-converting, the function of which is implemented by an up-converter as in fig. 1), and for demodulating the high frequency RF signal into a baseband signal (i.e., down-converting, the function of which is implemented by a down-converter as in fig. 1), and the up/down-converter, i.e., a mixer, for generating a baseband signal by mixing the high frequency RF signal with a local oscillator signal or generating a high frequency RF signal by mixing the baseband signal with a local oscillator signal.
The receiving path may further include a Low Noise Amplifier (LNA) before demodulation, which is used to amplify the received signal.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc.
A memory 104 for storing the program code and transmitting the program code to the CPU. The Memory 104 may include a Volatile Memory (RAM), such as a Random Access Memory (RAM). The Memory may also include a Non-Volatile Memory (e.g., a Read-Only Memory (ROM)), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive (HDD)), or a Solid-State Drive (SSD); the memory 104 may also comprise a combination of the above types of memory. The memory 104 is connected to the processor 101 through a bus.
The input/output module is mainly used for realizing an interactive function between the terminal device 100 and a user/external environment, and mainly includes an audio input/output module 105, a key input module 106, a display 107, and the like. In a specific implementation, the input/output module may further include: cameras, touch screens, sensors, and the like. The input and output modules are in communication with the processor 101 through the user interface 108.
Fig. 2 is a diagram illustrating an application scenario according to an embodiment of the present invention. In fig. 2, the communication system 200 includes a terminal device 201, a GSM cell 202, a WCDMA cell 203, a WCDMA cell 204, a WCDMA cell 205, a WCDMA cell 206, a WCDMA cell 207, and a WCDMA cell 208. Wherein, the terminal device 201 currently resides in the GSM cell 202, there are 4 WCDMA neighboring cells configured for the GSM cell 202 by the network side, which are: WCDMA cell 203, WCDMA cell 204, WCDMA cell 205, and WCDMA cell 206. The frequency point of the two cells, i.e., the WCDMA cell 203 and the WCDMA cell 204, is F1 frequency point, and it is assumed that the scrambling codes of the two cells are ID11 and ID12, respectively. The frequency point of two cells, i.e., the WCDMA cell 205 and the WCDMA cell 206, is F2 frequency point, and the scrambling codes of the two cells are ID21 and ID22, respectively. Suppose that the actually existing WCDMA cells around the GSM cell 202 are two cells with scrambling codes ID13 and ID14 under the frequency of F1, which are respectively: WCDMA cells 207 and WCDMA cells 208.
Fig. 3 is a schematic flow chart of a network handover method according to an embodiment of the present invention, which includes, but is not limited to, the following steps.
S301: the terminal device measures N adjacent cells in a measuring adjacent cell list issued by a network respectively to obtain N adjacent cell measured values.
Wherein N is a positive integer. The terminal device may obtain the neighboring cell measurement configuration information from a system message broadcasted by the currently camped serving cell, and the terminal device may also obtain the neighboring cell measurement configuration information from a packet measurement command (PMO) message sent by the serving cell. Specifically, if the terminal device is in an IDLE state (English: IDLE), the terminal device obtains neighbor cell measurement configuration information from a system message broadcasted by a serving cell; if the terminal equipment is in a transmission state, the terminal equipment can acquire the neighbor cell measurement configuration information from the system message broadcasted by the serving cell, and if the network issues the PMO message in the transmission state to modify the neighbor cell configuration, the terminal equipment can also acquire the neighbor cell measurement configuration information from the PMO message. The neighbor cell measurement configuration information includes a measurement neighbor cell list. And the information of the neighbor cell of the service cell where the terminal equipment resides currently is recorded in the measurement neighbor cell list. The adjacent cell may also be a cell of the same type of the serving cell, or a cell of a different type of the serving cell. For example, the serving cell where the terminal device currently resides described in the embodiment of the present invention is a GSM cell, and the neighboring cell is a WCDMA cell. And the terminal equipment measures each neighboring cell of the service cell according to the obtained neighboring cell measurement configuration information to obtain the measurement value of each neighboring cell.
For example, for the application scenario shown in fig. 2, the serving cell in which the terminal device 201 currently resides is the GSM cell 202. The measurement neighbor list configured by the network for the GSM cell 202 includes 4 neighbors, which are the WCDMA cell 203, the WCDMA cell 204, the WCDMA cell 205, and the WCDMA cell 206, respectively. After obtaining the measurement configuration information from the currently camped GSM cell 202, the terminal device 201 measures the GSM cell 202, and performs measurement on the 4 WCDMA neighbor cells to obtain neighbor measurement values corresponding to the neighbor cells. Assume that the measured values of the terminal device for the 4 WCDMA cells are: RSCP203＝-110dBm、RSCP204＝-120dBm、RSCP205＝-125dBm、RSCP206＝-134dBm。
S302: the terminal device judges whether the measured values of the N neighboring cells are all less than or equal to a first preset threshold, if so, executes step S303; if not, the process is ended, or the process returns to step S301, and the embodiment of the present invention will be described by taking the process as an example.
Wherein the first preset threshold may be specified by a system protocol.
For example, the first preset threshold is-106 dBm. The measured values of the terminal device for 4 WCDMA neighboring cells of the GSM cell 202 are respectively: RSCP203＝-110dBm、RSCP204＝-120dBm、RSCP205＝-125dBm、RSCP206And if the measured values of the 4 WCDMA neighboring cells are-134 dBm, the terminal equipment sequentially judges the measured values of the 4 WCDMA neighboring cells, and finally judges that the measured values of the 4 WCDMA neighboring cells are all smaller than-106 dBm. Or the terminal equipment determines that the maximum value of the measured values of the 4 WCDMA neighboring cells is-110 dBm, then judges whether the maximum value is smaller than-106 dBm or not, and finally judges that the measured values of the 4 WCDMA neighboring cells are smaller than-106 dBm.
S303: and the terminal equipment searches M frequency points corresponding to the N adjacent cells to obtain all cells under the M frequency points.
Wherein M is a positive integer less than or equal to N. When the terminal device determines that the measured values of the N neighboring cells configured by the network are all less than or equal to the first preset threshold, that is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, in order to ensure that the terminal device can search for an effective cell, the terminal device triggers the search of the neighboring cell frequency point configured by the network instead of directly searching all cells on the neighboring cell frequency point configured by the network, so that the power consumption of the terminal device is reduced, and the better power saving of the terminal device is facilitated.
For example, for the application scenario shown in fig. 2, the network includes 4 neighbor cells in the measurement neighbor cell list configured for the GSM cell 202, which are the WCDMA cell 203, the WCDMA cell 204, the WCDMA cell 205, and the WCDMA cell 206, respectively. The frequency point of the two cells, i.e., the WCDMA cell 203 and the WCDMA cell 204, is F1 frequency point, and the frequency point of the two cells, i.e., the WCDMA cell 205 and the WCDMA cell 206, is F2 frequency point. Then M is 2. When the terminal device 201 determines that the measured values of the 4 neighboring cells configured by the network are all less than or equal to-106 dBm, the terminal device searches frequency point F1 and frequency point F2, searches all cells under frequency point F1 and all cells under frequency point F2, and finally, the effective cells searched by the terminal device are two cells with scrambling codes ID13 and ID14 respectively under frequency point F1, where: WCDMA cells 207 and WCDMA cells 208. In the embodiment of the present invention, the valid cell may be understood as a cell for which a measurement value measured by the terminal device is higher than a certain threshold.
As an optional implementation manner, before the terminal device searches M frequency points corresponding to N neighboring cells and obtains all cells under the M frequency points, the terminal device further measures the M frequency points respectively to obtain a frequency point measurement value of each frequency point, and the frequency point measurement value can be embodied by an RSSI value. And if the measured values of the N adjacent cells are all smaller than or equal to a first preset threshold value and the measured value of the frequency point of a target frequency point in the M frequency points is larger than or equal to a second preset threshold value, the terminal equipment searches the target frequency point to obtain all cells under the target frequency point.
Here, the second preset threshold may be specified by a system protocol. The two steps of measuring N adjacent cells by the terminal equipment to obtain N adjacent cell measurement values and measuring M frequency points by the terminal equipment to obtain M frequency point measurement values can be carried out simultaneously or separately, and the execution sequence is not limited when the two steps are carried out separately. And when no effective cell exists in a measurement adjacent cell list configured by the network and the RSSI of the adjacent cell frequency point is higher, the terminal equipment starts to search all cells under the adjacent cell frequency point.
For example, the second preset threshold is-90 dBm. In a transmission state or an idle state, when the terminal device starts the neighbor cell measurement for the first time, only 4 WCDMA neighbor cells configured by the network are measured. I.e. only 4 cells, WCDMA cell 203, WCDMA cell 204, WCDMA cell 205 and WCDMA cell 206, are measured. The RSSI of the corresponding frequency points F1 and F2 is obtained while measuring the 4 cells. The terminal device measures the frequency points F1 and F2 to obtain RSSI values of the frequency points F1 and F2, and if the RSSI value of the frequency point F1 is-65 dBm and the RSSI value of the frequency point F2 is-120 dBm, the terminal device can judge that the measured values of 4 adjacent cells of the GSM cell 202 are all smaller than-106 dBm and the measured value of the target frequency point F1 is larger than-90 dBm, and the measured value of the frequency point F2 is smaller than-90 dBm, the terminal device only searches the target frequency point F1, searches all cells under the frequency point F1, does not search the frequency point F2, can reduce invalid search behavior under the condition that no other available cells exist, and reduces power consumption.
By executing the steps, the terminal equipment can identify the network deployment abnormity. That is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, it may further determine whether there are other cells that may be available in the surrounding environment. When the energy of a certain frequency point is high, it can be determined that there may be available cells on the frequency point, and the terminal device starts to search all cells under the frequency point only under the condition that there are other available cells. And only all cells under the target frequency point with larger frequency point measurement value are searched, and cells under other frequency points with smaller frequency point measurement value are not searched, so that the search behavior of invalid frequency points is reduced, and the power consumption is reduced.
As an optional implementation manner, after the terminal device searches M frequency points corresponding to N neighboring cells and obtains all cells under the M frequency points, the terminal device measures all cells under the M frequency points to obtain O measured values of the neighboring cells, where O is a positive integer greater than N. And the terminal equipment selects a target cell meeting the cell reselection condition according to the O adjacent cell measurement values. And the terminal equipment reselects the target cell, and if the terminal equipment fails to reselect the target cell and the target cell is other neighbor cells except the neighbor cells in the measured neighbor cell list, the terminal equipment refuses to reselect the target cell again within preset time. All cells under the M frequency points include not only the neighboring cells configured for the serving cell by the network, but also the cells which are not configured for the serving cell by the network and are located around the current position of the terminal device.
When the terminal equipment carries out reselection evaluation, all cells under the M frequency points are reselected and evaluated together, namely, cell selection to be reselected is carried out aiming at all cells under the M frequency points. And if the measurement result of any cell in the effective cells searched from the M frequency points continuously meets the reselection threshold configured by the network, executing the reselection process to the cell. The cell reselection rule belongs to the prior art, and is not described herein in detail.
For example, for the application scenario shown in fig. 2, the terminal device 201 performs reselection evaluation on 2 valid cells searched at the frequency point F1 together with 4 cells configured by the network, that is, performs cell selection to be reselected collectively on the union of the cells searched at the frequency point F1 and the cells configured by the network. And if the measurement result of any cell in the 2 effective cells searched from the frequency point F1 continuously meets the reselection threshold configured by the network, executing the reselection process to the cell. If reselection to any of the 2 active cells fails, then re-camping on the GSM cell 202. And punishment is carried out on the cell with reselection failure, namely the cell is not allowed to be reselected again within a period of time. The reselection failure cause and corresponding penalty time are as follows: assuming that the terminal device 201 attempts to reselect to the target cell WCDMA cell 207, if rejection by the WCDMA cell 207 occurs upon registration of the terminal device 201, the terminal device 201 is not allowed to reselect to that cell again within 20 minutes. But does not affect the reselection of other cells under the same frequency point. Assuming that the terminal 201 attempts to reselect to the target cell WCDMA cell 208, when determining that a Public Land Mobile Network (PLMN) of the WCDMA cell 208 is not in an equivalent PLMN list of the currently camped GSM cell 202, the terminal 201 is not allowed to reselect to the cell again within 20 minutes. But does not affect the reselection of other cells under the same frequency point. The PLMN in the equivalent PLMN list is understood as a PLMN that is equivalent to the PLMN currently selected by the terminal device, and the priority of the PLMN is the same.
That is to say, when the terminal device encounters a situation that reselection of other cells outside the neighboring cell list configured by the network fails during reselection, the terminal device only punishs the failed cell, and does not affect reselection behaviors of other cells having the same frequency as the failed cell, so that negative effects on cells at other same frequency points are small.
It should be noted that the above-mentioned flows of determining the neighbor measurement value and controlling the measurement are mainly implemented in the GSM access layer of the terminal device.
Fig. 4 is a schematic structural diagram of a second embodiment of a terminal device according to the present invention. As shown in fig. 4, the terminal device 40 includes: a first measurement module 401 and a search module 402, wherein,
a first measurement module 401, configured to measure N neighboring cells in a measurement neighboring cell list sent by a network, respectively, to obtain N neighboring cell measurement values, where N is a positive integer;
a searching module 402, configured to search M frequency points corresponding to N neighboring cells to obtain all cells under M frequency points if the N neighboring cell measurement values obtained by the first measurement module 401 are all smaller than or equal to a first preset threshold, where M is a positive integer smaller than or equal to N.
When the terminal device measures that the measured values of the N neighboring cells in the neighboring cell list are all lower than a first preset threshold, that is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, in order to ensure that the terminal device can search for an effective cell, the terminal device triggers the search of the neighboring cell frequency point configured by the network instead of directly searching all the cells on the neighboring cell frequency point configured by the network, so that the power consumption of the terminal device is reduced, and the terminal device is favorable for better power saving.
Optionally, the terminal device 40 further includes:
the second measurement module is used for respectively measuring the M frequency points to obtain a frequency point measurement value of each frequency point;
the search module 402 is specifically configured to: if the measured values of the N neighboring cells obtained by the first measurement module 401 are all less than or equal to a first preset threshold and the measured value of the frequency point of a target frequency point in the M frequency points obtained by the second measurement module is greater than or equal to a second preset threshold, searching the target frequency point to obtain all cells under the target frequency point.
The terminal equipment can identify the network deployment abnormity. That is, when the terminal device determines that none of the neighboring cells configured by the network have energy or the energy is low, it may further determine whether there are other cells that may be available in the surrounding environment. When the energy of a certain frequency point is high, it can be determined that there may be available cells on the frequency point, and the terminal device starts to search all cells under the frequency point only under the condition that there are other available cells. Invalid search behavior can be reduced and power consumption can be reduced under the condition that no other available cells exist. And only all cells under the target frequency point with larger frequency point measurement value are searched, and cells under other frequency points with smaller frequency point measurement value are not searched, so that the search behavior of invalid frequency points is reduced, and the power consumption is reduced.
Optionally, the terminal device 40 further includes:
the third measurement module is used for measuring all cells under M frequency points to obtain O adjacent cell measurement values, wherein O is a positive integer larger than N;
a selection module, configured to select a target cell that meets a cell reselection condition according to the O neighboring cell measurement values obtained by the third measurement module;
and the reselection module is used for controlling the terminal equipment to reselect the target cell, and if the reselection to the target cell fails and the target cell is other neighbor cells except the neighbor cell in the measured neighbor cell list, the control terminal equipment refuses to reselect the target cell again within the preset time.
That is to say, when the terminal device encounters a situation that reselection of other cells outside the neighboring cell list configured by the network fails during reselection, the terminal device only punishs the failed cell, and does not affect reselection behaviors of other cells having the same frequency as the failed cell, so that negative effects on cells at other same frequency points are small.
It should be noted that, for the functions of each functional module in the terminal device 40 described in the embodiment of the present invention, reference may be made to the related description of the corresponding terminal device in the embodiment shown in fig. 3, which is not described herein again.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A method for network handover, comprising:
the terminal equipment respectively measures N adjacent cells in a measuring adjacent cell list issued by a network to obtain N adjacent cell measured values, wherein N is a positive integer;
the terminal equipment respectively measures M frequency points corresponding to the N adjacent cells to obtain a frequency point measured value of each frequency point;
if the measured values of the N adjacent cells are all smaller than or equal to a first preset threshold value, the terminal equipment searches the M frequency points to obtain all cells under the M frequency points, wherein M is a positive integer smaller than or equal to N;
the method for searching the M frequency points corresponding to the N adjacent cells by the terminal equipment to obtain all the cells under the M frequency points includes:
if the frequency point measurement value of a target frequency point in the M frequency points is greater than or equal to a second preset threshold value, the terminal equipment searches the target frequency point to obtain all cells under the target frequency point;
and if the frequency point measurement value of a first frequency point in the M frequency points is smaller than a second preset threshold value, the terminal equipment does not search the cell under the first frequency point, and the M frequency points comprise the first frequency point.
2. The method according to claim 1, wherein after the terminal device searches M frequency points corresponding to the N neighboring cells to obtain all cells under the M frequency points, the method further comprises:
the terminal equipment measures all cells under the M frequency points to obtain O measured values of adjacent cells, wherein O is a positive integer larger than N;
the terminal equipment selects a target cell meeting cell reselection conditions according to the O neighbor cell measurement values;
and the terminal equipment reselects the target cell, and if the terminal equipment fails to reselect the target cell and the target cell is other neighbor cells except the neighbor cell in the measured neighbor cell list, the terminal equipment refuses to reselect the target cell again within preset time.
3. The method according to any of claims 1 to 2, wherein the cell where the terminal device currently resides is a global system for mobile communications GSM cell, and the N neighbor cells are all wideband code division multiple access mobile communications WCDMA cells.
4. A terminal device, comprising a processor, a memory and a radio frequency module, wherein the memory is configured to store a network switching program code, and the processor is configured to call the network switching program code and perform the following operations:
the processor measures N adjacent cells in a measurement adjacent cell list issued by a network through the radio frequency module to obtain N adjacent cell measurement values, wherein N is a positive integer;
respectively measuring M frequency points corresponding to the N adjacent cells through the radio frequency module to obtain a frequency point measured value of each frequency point;
if the measured values of the N adjacent cells are all smaller than or equal to a first preset threshold value, the processor searches the M frequency points through the radio frequency module to obtain all cells under the M frequency points, wherein M is a positive integer smaller than or equal to N;
the processor searches for M frequency points corresponding to the N neighboring cells through the radio frequency module to obtain all cells under the M frequency points, including:
if the frequency point measurement value of a target frequency point in the M frequency points is greater than or equal to a second preset threshold value, the processor searches the target frequency point through the radio frequency module to obtain all cells under the target frequency point;
and if the frequency point measurement value of a first frequency point in the M frequency points is smaller than a second preset threshold value, the terminal equipment does not search the cell under the first frequency point, and the M frequency points comprise the first frequency point.
5. The terminal device of claim 4, wherein after the processor searches M frequency points corresponding to the N neighboring cells through the radio frequency module to obtain all cells under the M frequency points, the processor is further configured to:
the processor measures all cells under the M frequency points through the radio frequency module to obtain O adjacent cell measured values, wherein O is a positive integer larger than N;
the processor selects a target cell meeting cell reselection conditions according to the O neighbor cell measurement values;
the processor reselects the target cell through the radio frequency module, and if the target cell fails to be reselected and is other neighbor cells except the neighbor cells in the measured neighbor cell list, the processor controls the terminal device to refuse to reselect the target cell again within a preset time.
6. The terminal device according to any of claims 4 to 5, wherein the cell where the terminal device currently resides is a global system for mobile communications (GSM) cell, and the N neighboring cells are all Wideband Code Division Multiple Access (WCDMA) cells.
7. A terminal device, comprising a first measurement module, a search module and a second measurement module, wherein,
the first measurement module is used for respectively measuring N adjacent cells in a measurement adjacent cell list issued by a network to obtain N adjacent cell measurement values, wherein N is a positive integer;
the second measurement module is configured to measure the M frequency points corresponding to the N neighboring cells, respectively, to obtain a frequency point measurement value of each frequency point;
the searching module is configured to search the M frequency points to obtain all cells under the M frequency points if the N neighboring cell measurement values obtained by the first measurement module are all smaller than or equal to a first preset threshold, where M is a positive integer smaller than or equal to N;
wherein the search module is specifically configured to:
if the frequency point measurement value of a target frequency point in the M frequency points obtained by the second measurement module is greater than or equal to a second preset threshold value, searching the target frequency point to obtain all cells under the target frequency point;
and if the frequency point measurement value of a first frequency point in the M frequency points is smaller than a second preset threshold value, the terminal equipment does not search the cell under the first frequency point, and the M frequency points comprise the first frequency point.
8. The terminal device according to claim 7, further comprising:
a third measurement module, configured to measure all cells under the M frequency points to obtain O neighbor cell measurement values, where O is a positive integer greater than N;
a selecting module, configured to select a target cell that meets a cell reselection condition according to the O neighboring cell measurement values obtained by the third measurement module;
and the reselection module is used for controlling the terminal equipment to reselect the target cell, and if the reselection to the target cell fails and the target cell is other neighbor cells except the neighbor cell in the measured neighbor cell list, the terminal equipment is controlled to refuse to reselect the target cell again within preset time.
9. The terminal device according to any of claims 7 to 8, wherein the cell where the terminal device currently resides is a global system for mobile communications GSM cell, and the N neighboring cells are all wideband code division multiple access mobile communications WCDMA cells.
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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106961710B (en) * 2017-02-13 2020-04-14 Oppo广东移动通信有限公司 Network access method and terminal
EP3745775A4 (en) * 2018-02-12 2021-01-13 Huawei Technologies Co., Ltd. Measurement method and apparatus
CN109413750A (en) * 2018-12-07 2019-03-01 京信通信系统（中国）有限公司 A kind of frequency point determines method and device
CN112243275A (en) * 2019-07-17 2021-01-19 中国移动通信有限公司研究院 Method for receiving neighbor cell information, method for sending neighbor cell information, terminal and base station
CN111050365B (en) * 2019-11-27 2022-03-25 京信网络系统股份有限公司 Terminal measuring method, device, computer equipment and storage medium

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7089004B2 (en) * 2002-07-18 2006-08-08 Texas Instruments Incorporated Method and apparatus for scheduling cell search in CDMA mobile receivers
CN1852518A (en) * 2005-07-05 2006-10-25 华为技术有限公司 Method for supporting terminal to realize interacting between communication systems
CN101370226A (en) * 2007-08-17 2009-02-18 华为技术有限公司 Method and customer equipment for measuring and reading control signal channel
CN101888680A (en) * 2009-05-11 2010-11-17 联芯科技有限公司 Method for reelecting/switching 2G mode into 3G mode and dual-mode single-standby terminal device
CN102595474A (en) * 2012-03-22 2012-07-18 华为终端有限公司 Method for establishing communication connection and user equipment
CN104936261A (en) * 2014-03-21 2015-09-23 中兴通讯股份有限公司 Terminal automation network finding method and apparatus
CN105101313A (en) * 2014-05-22 2015-11-25 中兴通讯股份有限公司 Terminal cell reselection method and terminal cell reselection device
CN105744599A (en) * 2016-02-29 2016-07-06 华为技术有限公司 Cell search method and apparatus, and user equipment

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7089004B2 (en) * 2002-07-18 2006-08-08 Texas Instruments Incorporated Method and apparatus for scheduling cell search in CDMA mobile receivers
CN1852518A (en) * 2005-07-05 2006-10-25 华为技术有限公司 Method for supporting terminal to realize interacting between communication systems
CN101370226A (en) * 2007-08-17 2009-02-18 华为技术有限公司 Method and customer equipment for measuring and reading control signal channel
CN101888680A (en) * 2009-05-11 2010-11-17 联芯科技有限公司 Method for reelecting/switching 2G mode into 3G mode and dual-mode single-standby terminal device
CN102595474A (en) * 2012-03-22 2012-07-18 华为终端有限公司 Method for establishing communication connection and user equipment
CN104936261A (en) * 2014-03-21 2015-09-23 中兴通讯股份有限公司 Terminal automation network finding method and apparatus
CN105101313A (en) * 2014-05-22 2015-11-25 中兴通讯股份有限公司 Terminal cell reselection method and terminal cell reselection device
CN105744599A (en) * 2016-02-29 2016-07-06 华为技术有限公司 Cell search method and apparatus, and user equipment

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