CN110138492B

CN110138492B - Cell search method and related equipment

Info

Publication number: CN110138492B
Application number: CN201810375790.XA
Authority: CN
Inventors: 闫晓涛; 程永旺; 贾银元; 高亮亮
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2018-02-08
Filing date: 2018-04-23
Publication date: 2021-02-12
Anticipated expiration: 2038-04-23
Also published as: CN110138492A

Abstract

The embodiment of the application discloses a cell search method and related equipment, wherein the method comprises the following steps: controlling a first radio frequency device to monitor a paging channel of a first cell, and controlling a second radio frequency device to search for a cell within a preset range, wherein the first cell is a cell in which the terminal currently resides; if a second cell meeting the cell residence condition exists, controlling the terminal to reside in the second cell; the monitoring of the paging channel of the first cell is discontinued. The method can avoid the phenomenon of missed paging of the terminal and improve the success rate of the called party of the terminal.

Description

Cell search method and related equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a cell search method and a related device.

Background

With the continuous development of communication technology, the network searching function and the service function are used as basic functions of the terminal, so that the terminal can complete data interaction with a network and other equipment. The network searching function is used for helping the terminal to search for an available network, and the terminal can find a better cell through the network searching function, so that the network searching function is an important function for guaranteeing that the terminal provides better service experience.

Currently, when a terminal searches a cell using a network searching function, it is necessary to search a nearby cell and read a system message first, and then the terminal can camp on a cell satisfying a cell camping condition. However, when the terminal starts to camp on a new cell from the cell reselection, a short paging missing phenomenon (i.e., a paging message missing phenomenon) occurs, and if services such as a voice call are initiated to the terminal in this period, the terminal cannot receive the paging message corresponding to the voice call, so that the success rate of the called party of the terminal is greatly reduced.

Disclosure of Invention

The technical problem to be solved by the application is how to avoid the phenomenon of missed paging of the terminal and improve the success rate of the called party of the terminal.

In a first aspect, the present application provides a cell search method, applied to a terminal, where the terminal at least includes a first radio frequency device and a second radio frequency device, and the method includes: controlling a first radio frequency device to monitor a paging channel of a first cell which is resided currently, controlling a second radio frequency device to search for a cell in a preset range, if a second cell of which the cell signal meets the cell residence condition exists, controlling the second radio frequency device to initiate a registration service aiming at the second cell, residing the terminal in the second cell through the registration service, and interrupting monitoring of the paging channel of the first cell.

Whether the second cell satisfies the cell camping condition may be determined by a System Information Block (SIB) of the second cell, and the determining process may be a process specified by referring to the third Generation Partnership Project (3rd GPP).

It can be seen that, by implementing the method provided in the first aspect, the network search for the cell within the preset range can be realized while monitoring the paging channel of the currently camped cell, so that the phenomenon of missed paging reception of the terminal can be effectively avoided, and the success rate of the called party of the terminal is improved.

As an optional implementation manner, before controlling the first radio frequency apparatus to monitor a paging channel of the first cell and controlling the second radio frequency apparatus to search for a cell within a preset range, the method further includes: and controlling the first radio frequency device and the second radio frequency device to monitor a paging channel of a first cell and determine a cell signal of the first cell, and if the cell signal of the first cell is greater than or equal to a second preset intensity and smaller than a first preset intensity, controlling the first radio frequency device to monitor the paging channel of the first cell and controlling the second radio frequency device to search cell signals corresponding to cells within a preset range.

When the cell signal is smaller than the first preset strength, the success rate of monitoring the paging channel of the first cell by the first radio frequency device may be affected, and when the cell signal is greater than the second preset strength, the first cell may ensure the service quality of the terminal.

As an optional implementation, the method further comprises: when the terminal does not monitor a paging channel and is in a network searching state, controlling a first radio frequency device to search a cell under a first standard, and controlling a second radio frequency device to search a cell under a second standard; if the first radio frequency device searches a second cell meeting the cell residence condition, controlling the first radio frequency device to initiate a registration service to the second cell; and if the second radio frequency device searches a second cell meeting the cell residence condition, controlling the second radio frequency device to initiate a registration service to the second cell.

As an optional implementation manner, if the cell signal of the first cell is not received within the preset time period, the terminal enters a network searching state.

As an optional implementation manner, if the received signal strength of the cell signal of the first cell is smaller than a second preset strength, the terminal enters a network searching state.

It can be seen that, by implementing the above optional implementation manner, the terminal may not be able to monitor the paging channel of the first cell and may enter the network searching state when the cell signal of the first cell is not received or the received signal strength of the cell signal of the first cell is smaller than the second preset strength, and at this time, two radio frequency devices are invoked to search for the network simultaneously, which may reduce the time duration of network searching.

As an optional implementation manner, controlling the first radio frequency device to monitor a paging channel of the first cell, and controlling the second radio frequency device to search for a cell within a preset range may include: and when the terminal is in a service non-idle state, controlling the first radio frequency device and the network to carry out service transmission, and controlling the second radio frequency device to search a cell signal corresponding to a cell with a system higher than that of the first cell within a preset range.

The service non-idle state may be a state in which the terminal is executing a service, where the service includes a PS (Packet Switching Domain) service or a CS (Circuit Switching Domain) service.

Therefore, by implementing the above optional implementation manner, the terminal may control the first radio frequency device to execute the service and control the second radio frequency device to perform network search on the high-standard cell during service execution, so as to realize timely residence to the high-standard cell during the service.

As an optional implementation manner, when the terminal is in a non-idle service state, controlling the first radio frequency device and the network to perform service transmission, and controlling the second radio frequency device to search for a cell within a preset range may include: when the terminal is in a service non-idle state, determining the service quality when the terminal executes the service; and if the service quality meets the preset condition, controlling the first radio frequency device and the network to carry out service transmission, and controlling the second radio frequency device to search the cell within the preset range.

Wherein, the service quality when the terminal executes the service can be determined according to one or more of the cell signal of the first cell during executing the service, the signal receiving and transmitting capability of the terminal and the error rate.

Therefore, by implementing the above optional implementation manner, on the premise that the service quality meets the preset condition, the first radio frequency device may be controlled to monitor the paging message sent by the first cell, and the second radio frequency device may be controlled to search for a cell signal corresponding to a cell having a higher standard than the first cell within a preset range, so that the service quality of the service executed by the terminal may be ensured, and the user experience of the service may not be affected.

In a second aspect, a cell measurement method is provided, and the cell measurement method includes: when the terminal does not perform service transmission and is in a measuring state, controlling the first radio frequency device to measure a cell under a first frequency point and controlling the second radio frequency device to measure a cell under a second frequency point, wherein the cell under the first frequency point and the cell under the second frequency point are cells in the neighbor area list to be measured; and if the first radio frequency device or the second radio frequency device measures the target neighbor cell meeting the cell reselection condition, controlling the terminal to reselect the target neighbor cell meeting the cell reselection condition.

It can be seen that, by implementing the method provided in the second aspect, when the terminal does not transmit a service, the cells with different frequency points can be measured simultaneously, so that the measurement speed can be increased, and the power consumption can be reduced.

As a feasible implementation manner, the terminal may configure the neighboring cell information according to the current network condition, select the cell entering the neighboring cell table to be tested according to the preset rule, and sequence the cells in the neighboring cell table to be tested.

As a possible implementation, the preset rule may be: and the terminal selects a cell entering the neighbor cell list to be tested according to the supported carrier aggregation frequency point.

As a possible implementation, the first frequency point and the second frequency point may be frequency points under different systems. For example, the first frequency point is a frequency point in a 3G system, and the second frequency point is a frequency point in a 4G system.

As a possible implementation, the first frequency point and the second frequency point may be frequency points under the same system. For example, the first frequency point and the second frequency point are both frequency points under a 4G system.

As a feasible implementation manner, when the terminal is in a service non-idle state, the first radio frequency device and the network may also be controlled to perform service transmission, and the second radio frequency device is controlled to measure the cells in the neighbor cell list to be measured according to a preset frequency point sequence; if the second radio frequency device measures a target adjacent cell meeting the cell switching condition, sending a switching request to network equipment; and when receiving a switching response sent by the network equipment aiming at the switching request, controlling the terminal to be switched to the target adjacent cell meeting the cell switching condition.

Therefore, by implementing the feasible implementation manner, the terminal can control the first radio frequency device to continue to execute the service and control the second radio frequency device to measure the cells with different frequency points during the service execution period, so that the timeliness of cell switching during the service execution period can be improved, and the mobile performance of the terminal can be improved.

As a possible implementation manner, the terminal may be configured with at least two channel estimation modules, where the channel estimation modules may be configured to perform channel estimation on cell signals measured by the first radio frequency device and the second radio frequency device, respectively, and report the estimation result to the access stratum to determine whether to perform cell reselection or cell handover.

As a possible implementation, a terminal configured with at least two channel estimation modules may be configured with at least two card slots correspondingly. That is, two channel estimation modules may be configured with two card slots, and three channel estimation modules may be configured with three card slots.

Furthermore, the terminal can realize that the first radio frequency device and the second radio frequency device are controlled to simultaneously measure the cells with different frequency points under the condition of using a single card and if no transmission service exists. Under the condition of using double cards or multiple cards, during the service transmission period of one card, the second radio frequency device is released to simultaneously measure the cell, so that other cards can timely carry out cell switching, and the mobility of other cards is improved.

In a third aspect, a terminal is provided, where the terminal has a function of implementing the first aspect or a possible implementation manner of the first aspect, and/or the second aspect or a possible implementation manner of the second aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above. The module may be software and/or hardware. Based on the same inventive concept, as the principle and the advantageous effects of the terminal to solve the problem may refer to the possible method embodiments of the first aspect and the first aspect, and/or the possible implementation manners of the second aspect or the second aspect, and the advantageous effects brought thereby, the implementation of the terminal may refer to the possible method embodiments of the first aspect and the first aspect, and/or the possible implementation manners of the second aspect or the second aspect, and repeated details are omitted.

In a fourth aspect, a terminal is provided, which includes: a memory for storing one or more programs; for the implementation and the advantageous effects of the terminal to solve the problems, refer to the implementation and/or the possible implementation and the advantageous effects of the foregoing first aspect and the foregoing first aspect, and/or the possible implementation and the advantageous effects of the second aspect or the second aspect, and repeated details are omitted.

In a fifth aspect, a computer-readable storage medium is provided, where the computer-readable storage medium stores a computer program, where the computer program includes program instructions, and the program instructions, when executed by a processor, cause the processor to perform the method of the first aspect and the embodiments of the possible methods of the first aspect, and/or the possible implementations and advantages of the second aspect or the second aspect, and repeated details are omitted here.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an overall architecture diagram for cell search according to an embodiment of the present invention;

fig. 2 is another overall architecture diagram for cell search according to an embodiment of the present invention

Fig. 3 is a flowchart illustrating a cell search method according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a scenario for cell search according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating another cell searching method according to an embodiment of the present invention;

fig. 6 is a schematic diagram of another scenario for cell search according to the present invention;

fig. 7 is a flowchart illustrating a further cell search method according to an embodiment of the present invention;

fig. 8 is a schematic diagram of another scenario for cell search according to the present invention;

fig. 9 is a flowchart illustrating a cell measurement method according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a scenario for cell measurement according to an embodiment of the present invention;

fig. 11 is a flowchart illustrating another cell measurement method according to an embodiment of the present invention;

fig. 12 is a schematic diagram of another scenario for cell measurement according to the present invention;

fig. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of another terminal according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings.

The network searching function, the service function and the measuring function are used as basic functions of the terminal, so that the terminal can complete data interaction with a network and other equipment. For early commercial terminals, most of them use a single rf device (such as a single antenna), which results in that the terminal cannot operate at two frequencies; with the continuous development of communication technology, in order to improve the performance of the terminal and improve the user experience, the terminals of dual radio frequency devices or more radio frequency devices gradually occupy the market.

For example, a terminal for a dual radio frequency device may be as shown in fig. 1. Referring to fig. 1, an overall architecture diagram for cell search according to an embodiment of the present invention may be disposed in a terminal with dual radio frequency devices, where the terminal may be, for example, a terminal configured with two radio frequency devices, such as a smart phone, a tablet computer, a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), and the like, and the present invention is not limited thereto. Specifically, the terminal shown in fig. 1 may include a first radio frequency device, a second radio frequency device, a front-end circuit, and a modem device.

The first radio frequency device and the second radio frequency device can be double antennas of the terminal; the front-end circuit may be a circuit that controls the first rf device and the second rf device; the channel (1) and the channel (2) can respectively represent a channel occupied by a service function of the terminal and a channel occupied by a network searching function of the terminal; the modem device may be configured to interact with the base station, and control the first radio frequency device and the second radio frequency device to perform a service function, a network searching function, or a measurement function through the channel (1) or through the channel (2), so that the service function, the network searching function, or the measurement function monopolizes the first radio frequency device and the second radio frequency device.

When the terminal searches for a cell using the network searching function (for example, during cell reselection in a system or in a different system), because the terminal needs to search for a network and read a system message for a cell within a preset range, at this time, the terminal cannot receive a paging message of a cell where the terminal originally resides, and a problem of missing a paging message may occur.

In order to solve the above technical problem, please refer to fig. 2, which is another overall architecture diagram for cell search according to an embodiment of the present invention, the overall architecture diagram shown in fig. 2 may be configured in a terminal of a dual radio frequency device. As can be seen from fig. 2, the terminal structure shown in fig. 2 is added with a channel (3) and a preselection switch on the basis of the terminal structure shown in fig. 1.

The channel (3) may be a channel having a higher priority than the channels (1) and (2). The preselection switch is used for controlling whether the channel (2) or the channel (3) is connected with the front-end circuit, wherein the preselection switch may be a logic circuit or a physical switch, which is not limited in this embodiment of the present invention.

In one embodiment, the modem apparatus may control, through the channel (1), the first radio frequency apparatus and the second radio frequency apparatus to monitor a paging channel of a currently camped cell (i.e., a first cell), and determine a cell signal of the first cell, when the modem apparatus determines that the cell signal of the currently camped cell (i.e., the first cell) is less than a first preset strength and greater than or equal to a second preset strength, the modem apparatus may preempt the second radio frequency apparatus in the front-end circuit through the channel (3) to search cell signals corresponding to cells within a preset range, and for the first radio frequency apparatus, the modem apparatus may control, through the channel (1), the first radio frequency apparatus to monitor the paging channel of the first cell.

In one embodiment, if there is a second cell whose cell signal satisfies the cell camping condition, the modem apparatus may control, through the channel (3), the second radio frequency apparatus to initiate a registration service for the second cell, camp the terminal on the second cell, and after the camping is successful, may control the first radio frequency apparatus to discontinue monitoring the paging channel of the first cell.

In an embodiment, if the channel (1) is not used, for example, the terminal does not monitor a paging channel of the first cell and is in a network searching state, the modem may first preempt, through the channel (3), the second radio frequency device in the front end circuit to search for a cell in the first system, and for the remaining first radio frequency devices, the modem may control the first radio frequency device to search for a cell in the second system through the channel (2), which may implement parallel network searching and shorten the time consumed for network searching.

In one embodiment, if the terminal is performing a service (i.e., is in a service non-idle state), the modem uses the first radio frequency device and the second radio frequency device to perform the service through the channel (1), at this time, the modem may preempt one of the radio frequency devices (e.g., the second radio frequency device) used by the channel (1) through the channel (3) to perform a network search for a high-standard cell (a standard higher than that of the currently camped cell), and the first radio frequency device is used by the channel (1) to perform the service.

Therefore, by implementing the method executed by the terminal shown in fig. 2, the network searching of the cell within the preset range is realized while the paging channel of the current resident cell is monitored, so that the phenomenon of missed paging of the terminal can be effectively avoided, and the success rate of the called party of the terminal is improved. Furthermore, when the terminal is in a network searching state, parallel network searching is realized, and the time consumed by network searching is shortened. Further, in the service execution period of the terminal, the timely residence to the high-standard cell is quickly completed. Furthermore, when the terminal is in a measurement state, parallel measurement is realized, and the measurement time is shortened. Furthermore, during the period of executing the service by the terminal, the measurement process is carried out simultaneously, and the timeliness of cell switching is improved.

For a clearer description of the present application, method embodiments of the present application are presented below. It should be noted that the method in the embodiment of the method provided in the present application may be executed by a terminal, and the terminal may be, for example, a terminal configured with two or more radio frequency devices, such as a smart phone, a tablet computer, a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), and the like, which is not limited in this respect.

It should be further noted that, in the present application, searching for a network may refer to: the terminal does not need to establish a neighbor cell list to be tested in advance, but searches cell signals of a cell within a preset range and receives a system message of the searched cell.

The transmission service of the present application may be: the terminal interacts with the network (i.e. a network device, such as a base station, etc.) to transmit data of a service (which may be a PS domain service or a CS domain service, etc.).

The measurement of the present application may refer to: the terminal establishes the neighbor list to be measured in advance and measures the cell signal of the neighbor list to be measured.

Referring to fig. 3, it is a schematic flow chart of a cell search method according to an embodiment of the present invention, and as shown in fig. 3, the cell search method according to the embodiment of the present invention includes the following steps:

301. and controlling the first radio frequency device to monitor a paging channel of the first cell and controlling the second radio frequency device to search for the cell within the preset range.

And the first cell is a cell in which the terminal currently resides.

In some feasible embodiments, the cell in which the terminal currently resides may refer to a cell in which the terminal successfully reads the target system message, and whether the residence condition is met or not may be implemented according to the requirement specification (that is, the terminal may normally reside in the first cell or may be limitedly reside in the first cell); the system message read by the terminal may be all system messages or some of the system messages. For example, in the LTE system, the terminal may determine whether to camp on the first cell according to a requirement when successfully reading the SIB1 message (including the cell access related parameter) and the SIB2 message (including the partial parameter of the terminal access restriction) therein, and the like.

It should be noted that a Paging Channel (PCH) is a downlink transport Channel used for transmitting downlink information associated with a Paging procedure. For example, in a process that a network initiates a voice call to a terminal, a Mobile network pages on paging channels of all cells having a Location Area Code (LAC) Number according to an LAC registered by the terminal, and an identifier of the paging terminal may be an International Mobile Subscriber Identity (TMSI) or an International Mobile Subscriber Identity (IMSI). After receiving the paging, the terminal starts to access when judging that the identification in the paging is the same as the identification of the terminal, returns a response message to the network, and then establishes a voice service.

It should be noted that the predetermined range may be a range determined by centering on the first cell. The cells within the predetermined range may be, for example, cells located in the same location area as the first cell (i.e., neighboring cells).

In an embodiment, before controlling the first radio frequency device to monitor a paging channel of the first cell and controlling the second radio frequency device to search for a cell within a preset range, the method may further include: controlling a first radio frequency device and a second radio frequency device to monitor a paging channel of a first cell and determine a cell signal of the first cell; and if the cell signal of the first cell is smaller than the first preset intensity and is greater than or equal to the second preset intensity, controlling the first radio frequency device to monitor a paging channel of the first cell and controlling the second radio frequency device to search cell signals corresponding to the cells within the preset range.

In some possible embodiments, the terminal may control the first radio frequency device and the second radio frequency device to periodically listen to the paging channel of the first cell. The monitoring period may be obtained according to the system message of the first cell, and specifically, the monitoring period is a discontinuous reception period (DRX period); alternatively, the terminal may set the listening period according to parameters such as the power value of the terminal itself, and the like, which is not limited in this invention.

For example, the terminal may determine that a cell signal of the first cell is less than a first preset strength and greater than or equal to a second preset strength when the terminal is in an idle state (i.e., a state where no service is executed), and may perform cell reselection, and in a cell reselection process, control the first radio frequency device to monitor a paging channel of the first cell, and control the second radio frequency device to search for a cell within a preset range.

The cell signal of the first cell may be determined by the received pilot strength of the first cell, or may be determined by the received signal level of the first cell, and so on, which is not limited in this embodiment of the present invention.

It should be further noted that, during the period from the start of cell reselection to the time of camping in the second cell, the terminal may control the first radio frequency device to monitor the paging channel of the first cell, and control the second radio frequency device to search for a cell within the preset range, so as to avoid the problem that the paging message cannot be received during network search.

302. And if the second cell meeting the cell residence condition exists, the terminal resides in the second cell.

It should be noted that, whether the cell meets the camping condition is to obtain the signal strength of the current cell through measurement of the cell and receive the system message of the cell, so as to determine whether the current cell meets the camping condition, and the determination process follows the 3GPP protocol.

For example, the system message of the second cell may include network parameters of the second cell, such as one or more of a signal parameter of the second cell, a system of the second cell, a priority of the second cell, whether the second cell is prohibited from being accessed, and an access threshold corresponding to the second cell.

In the cell reselection process, the terminal takes a parameter C2 as a quality standard of a wireless channel in a GSM system, and the value of the parameter C2 is determined according to one or more of cell reselection offset (REO), temporary offset (TEO), path loss C1 and penalty time (PET); in other systems, the reselection determination is made according to the R criteria, which is not described in detail herein.

For example, if the UE camps in the GSM system, and the terminal calculates that the C2 value of the second cell exceeds the C2 value of the first cell and reaches a preset time (for example, 5s), it may be determined that the second cell meets the cell camping condition, and the terminal is controlled to initiate a registration service to the second cell.

When the terminal resides in the first cell and meets the residence condition, the second radio frequency device searches the network to judge that the second cell meets the residence condition, and the signal intensity of the second cell is better than that of the first cell, then the terminal initiates direct residence to the second cell, and starts to monitor the paging channel of the second cell to complete reselection to the second standard; if the terminal is limited to reside in the first cell (not meeting the residence condition), the second cell is judged to meet the residence condition through the network searching of the second radio frequency device, and the terminal directly initiates reselection to the second cell without comparing the signal strength of the two cells and resides in the second cell.

303. The terminal discontinues monitoring the paging channel of the first cell.

It should be noted that, in the case that the terminal camps on the second cell and acquires the paging channel configuration of the second cell, that is, in the case that the terminal can monitor the paging channel of the second cell, the terminal can monitor the paging channel of the first cell.

In one embodiment, after the terminal camps on the second cell, a registration service may be initiated to the network.

For example, after the terminal camps on the second cell, if the LAC or the TAC changes, the terminal initiates a registration service of the location area to notify the network terminal that the terminal camps on a different LAC/TAC.

To describe the embodiment of the present invention in more detail, please refer to fig. 4, which is a schematic view of a scenario for cell search according to the embodiment of the present invention, and specifically, an example of implementing cell search by controlling a first radio frequency device and a second radio frequency device for a control device of a terminal is provided, where the control device, the first radio frequency device, and the second radio frequency device may be disposed in the terminal, where the control device may be located in an access stratum of the terminal, and the first radio frequency device and the second radio frequency device may be located in a physical stratum of the terminal.

In fig. 4, the terminal may camp on a first cell, and when the signal strength of the first cell is less than a first preset strength and greater than or equal to a second preset strength, the control apparatus may transmit an instruction to listen to a paging channel of the first cell to the first radio frequency apparatus, the first radio frequency apparatus receives the instruction, and transmit an acknowledgement message to the control apparatus, and listen to the paging channel of the first cell, in 401.

Meanwhile, in 403, the control device may send a cell search instruction to the second radio frequency device, where the cell search instruction is used to control the second radio frequency device to search for a cell within a preset range. At 404, the second rf device receives the cell search command and sends a message to the control device to determine that the cell search command is received, and searches for a cell within a preset range.

In 405, the second radio frequency device may transmit a system message including the network parameter of the second cell to the control device, and the control device may determine whether the second cell satisfies the camping condition by reading the system message including the network parameter. In 406, the control device may send an instruction to camp on the second cell to the second radio frequency device if it is determined that the second cell satisfies the camp on condition. In 407, the second radio frequency device receives the instruction of camping and sends a confirmation message to the control device, the terminal may camp on the second cell, and after camping on the second cell, if the LAC or the TAC changes, the terminal may also initiate a registration service of the location area, and at the same time, the terminal may also control the first radio frequency device to interrupt monitoring of the paging channel of the first cell.

Therefore, the embodiment of the invention can realize the network searching of the cell within the preset range while monitoring the paging channel of the current resident cell, thereby effectively avoiding the phenomenon of missing paging of the terminal and improving the success rate of the called party of the terminal.

Referring to fig. 5, a flow chart of another method for cell search according to an embodiment of the present invention is shown, where the method according to the embodiment of the present invention includes:

501. and controlling the first radio frequency device and the second radio frequency device to monitor a paging channel of the first cell and determine a cell signal of the first cell.

It should be noted that, for the specific implementation process of step 501 shown in the embodiment of the present invention, reference may be made to the description of relevant parts in the foregoing embodiment, which is not described herein again.

502. And if the cell signal of the first cell is not received within the preset time length, the terminal enters a network searching state.

It should be noted that the preset time length may be a time length specified by the mobile communication protocol for the terminal to initiate the network searching function, or may also be a time length set by the terminal itself, which is not limited in this invention.

It should be further noted that the network searching status may refer to: the terminal starts a network searching function, and starts network searching for the cells to reside in one cell.

For example, the preset duration is 5 seconds, and if the duration reaches 5 seconds and the terminal does not receive the cell signal of the first cell, it may be determined that the terminal loses network, and further, the terminal may enter a network searching state.

In an embodiment, if the received signal strength of the cell signal of the first cell is less than the second preset strength, the terminal may also enter a network searching state.

It should be noted that, if the terminal receives the cell signal of the first cell and determines that the signal strength of the cell signal of the first cell is smaller than the second preset strength, the terminal may enter the network searching state.

It should be further noted that, when the signal strength of the cell signal of the first cell is smaller than the second preset strength, the terminal may determine that the signal quality of the first cell cannot meet the requirement for terminal residence, and may enter a network searching state to search for a cell whose signal quality can meet the requirement for terminal residence.

503. And when the terminal does not monitor the paging channel and is in a network searching state, controlling the first radio frequency device to search the cell under the first system, and controlling the second radio frequency device to search the cell under the second system.

It should be noted that, when the signal strength of the first cell is less than the second preset strength, or the terminal does not receive the cell signal of the first cell, the terminal may determine that the signal quality of the first cell cannot meet the requirement of terminal residence, no longer monitor the paging channel of the first cell, and enter the network searching state.

In some possible embodiments, when the terminal is in a network searching state, the terminal may control the first radio frequency device to search for a cell in the first standard, and control the second radio frequency device to search for a cell in the second standard, so that the first radio frequency device and the second radio frequency device work in parallel to implement parallel network searching.

It should be further noted that the cell in the first standard and the cell in the second standard may refer to cells in different standards (Rat), or may refer to cells in different frequency points (Band) of the same standard, which is not limited in this embodiment of the present invention.

For example, please refer to fig. 6, which is a schematic view of another scenario for cell search according to an embodiment of the present invention, wherein the terminal shown in fig. 6 includes a control device, a first rf device, and a second rf device. When the terminal enters a Network searching state, a Public Land Mobile Network (PLMN) Network searching may be triggered. In 601, the control device may send an instruction to the first radio frequency device to search for a cell of frequency point 1 in standard 1, and in 602, the first radio frequency device receives the instruction and sends a confirmation message to the control device, and may search for a cell of frequency point 1 in standard 1. In 603, the control device may send an instruction to the first radio frequency device to search for a cell of frequency point 2 in standard 1, and in 604, the second radio frequency device receives the instruction and sends a confirmation message to the control device, and may search for a cell of frequency point 2 in standard 1.

After searching all the frequency points in the standard 1, in 605, the control device may send an instruction to the first radio frequency device to search for the cell of the frequency point 1 in the standard 2, and in 606, the first radio frequency device receives the instruction, sends a confirmation message to the control device, and may search for the cell of the frequency point 1 in the standard 2. At 607, the control device may send an instruction to the first radio frequency device to search for the cell of frequency point 2 in standard 2, and at 608, the second radio frequency device receives the instruction and sends a confirmation message to the control device, and may search for the cell of frequency point 2 in standard 1.

Similarly, after the second rf device and the first rf device search all frequency points in the standard 2, the terminal may control the first rf device to search for Band1 under Rat3, and control the second rf device to search for Band2 under Rat3 until a second cell satisfying the cell camping condition is searched.

It should be further noted that the control device may control the first radio frequency device and the second radio frequency device to search for a network in parallel, and when the searched cell meets the cell residence condition, use the corresponding radio frequency device to receive the system message, so as to determine whether the cell meets the residence condition.

It should be further noted that the terminal may control the first radio frequency device and the second radio frequency device to perform serial network search, and specifically, may start network search according to a standard (Rat1-Rat2-Rat3 …), and perform network search according to frequency points (Band1-Band2-Band3 …) in the standard. That is, the first radio frequency device and the second radio frequency device simultaneously perform network search on Band1 under Rat1, after the search is completed, the first radio frequency device and the second radio frequency device perform network search on Band2 under Rat1, and after all frequency points under Rat1 are searched, network search on Band1 under Rat2 is started until a second cell meeting the cell residence condition is searched. However, the above-mentioned serial network searching method takes longer time to search for a network than the parallel network searching method.

504. And if the first radio frequency device searches a second cell meeting the cell residence condition, the terminal resides in the second cell.

In one embodiment, if the second radio frequency device searches for a second cell satisfying the cell camping condition, the terminal camps on the second cell.

It should be noted that, if any one of the first radio frequency device and the second radio frequency device searches for a second cell that satisfies the cell camping condition, the terminal may camp on the second cell.

In one embodiment, after camping on the second cell, if the LAC or the TAC changes, the terminal initiates a registration service of the location area.

It should also be noted that the terminal may listen to the paging channel of the second cell while camping on the second cell.

Therefore, according to the embodiment of the invention, when the terminal is in the network searching state, the network searching and the network searching are parallel by the first radio frequency device and the second radio frequency device, and the time for searching the full-frequency network is shortened.

Referring to fig. 7, a flowchart of another method for cell search according to an embodiment of the present invention is shown, where the method according to the embodiment of the present invention includes:

701. and when the terminal is in a service non-idle state, controlling the first radio frequency device and the network to carry out service transmission, and controlling the second radio frequency device to search a cell which is in a preset range and has a system higher than that of the first cell.

And the cells in the preset range are cells with the standard higher than that of the first cell. The system may be a cell with a higher priority than the system of the first cell.

It should be noted that the service non-idle state may refer to a state in which the terminal is executing a service. The service may be a CS domain service or a PS domain service, which is not limited in this embodiment of the present invention.

It should be noted that, in the case that the terminal executes the service, if the cell signal of the currently camped cell cannot meet the requirement, the terminal may camp on the high-standard cell depending on the network searching function.

In one embodiment, when the terminal is in a non-idle service state, controlling the first radio frequency device and the network to perform service transmission, and controlling the second radio frequency device to search for a cell within a preset range includes: when the terminal is in a service non-idle state, determining the service quality when the terminal executes the service; and if the service quality meets a preset condition (if the error code is lower than the threshold), controlling the first radio frequency device and the network to carry out service transmission, and controlling the second radio frequency device to search the cell within the preset range.

It should be noted that the service quality when the terminal performs the service may be determined by any one or more of a cell signal of the first cell currently camped on, an error rate when the terminal performs the service, and a signal receiving capability of the terminal itself. Of course, the above-mentioned modes are only examples, not exhaustive, and include but are not limited to the above-mentioned alternatives.

It should be noted that the preset condition may be different according to the determination manner of the quality of service. For example, if the quality of service is determined based on a cell signal of the first cell, the predetermined condition may be that the first cell is greater than a predetermined signal threshold.

The signal threshold may be greater than the signal strength of the cell signal required by the terminal to execute the service, so that the quality of the service executed by the terminal may be ensured when the second radio frequency device is subsequently called to search for the network.

It should be noted that, if the quality of service is determined by a plurality of factors, the preset condition may be a condition corresponding to each of the plurality of factors.

For example, in a non-idle service state, the terminal may control the second radio frequency device to perform network search on a high-standard cell within a preset range and control the first radio frequency device to continue service transmission with the network when it is determined that the service quality meets a preset condition.

In some possible embodiments, when executing a Service (e.g., streaming media Service) with a low Quality of Service (QoS) requirement, the terminal may determine that the Quality of Service corresponding to the Service satisfies the cell residence condition.

702. And if the second cell meeting the cell residence condition exists, controlling the terminal to reside in the second cell.

In one embodiment, if the first cell and the second cell are located in different location areas, the terminal may initiate registration with the network at the second cell after camping on the second cell.

703. The terminal discontinues monitoring the paging channel of the first cell.

704. The terminal continues to initiate the previously released service in the second cell.

For example, referring to fig. 8, fig. 8 is a diagram illustrating an example of a terminal camping in a high-system cell in a non-idle service state. The terminal in fig. 8 may include a control device, a first radio frequency device, and a second radio frequency device. When the terminal executes the service in the first cell, the terminal transmits the service data to the first cell to execute the relevant service, and meanwhile, the paging can be sent to the terminal through the service data.

In 801, the control device may send a search for a cell with a higher format than the first cell to the second radio frequency device; in 802, the second rf device receives the search command, sends a confirmation message to the control device, and may search for a high-standard cell within a preset range.

In 803, the second radio frequency device may send a system message of the second cell (the system message may include network parameters of the second cell) to the control device; the control device may send an instruction to return to an idle state to the first radio frequency device in 804, if it is determined that the second cell satisfies the cell camping condition through the system message (e.g., through a network parameter in the system message); the first rf device may send a confirmation message to the control device in 805 after receiving the instruction to return to the idle state, and may monitor a paging channel of the first cell by the terminal to actively release the current service.

At 806, the control device may send an instruction to camp on the second cell to the second radio frequency device; in 807, the second rf device receives the camping instruction and sends a confirmation message to the control device, and the terminal reselects to camp on the second cell, and after camping on the second cell, the terminal may initiate the previously released service on the second cell.

Therefore, through the embodiment of the invention, the terminal can control the first radio frequency device to execute the service and control the second radio frequency device to search the high-standard cell during the service execution period, so that the terminal can reside in the high-standard cell in time during the service execution period, the network searching function and the service function are parallel, and the service experience is enhanced.

Please refer to fig. 9, which is a flowchart illustrating a cell measurement method according to an embodiment of the present invention. The method provided by the embodiment of the invention comprises the following steps:

901. and when the terminal does not perform service transmission and is in a measuring state, controlling the first radio frequency device to measure the cell under the first frequency point, and controlling the second radio frequency device to measure the cell under the second frequency point.

And the cell under the first frequency point and the cell under the second frequency point are cells in the neighbor area list to be tested.

In one embodiment, the terminal may measure a cell Signal (e.g., Reference Signal Receiving Power (RSRP)) or Reference Signal Receiving Quality (RSRQ), etc., of a cell in the neighbor list to be measured.

In one embodiment, the terminal may pre-configure the neighbor list to be tested. For example, the terminal may configure the neighbor cell information according to the current network condition, select the cell entering the neighbor cell table to be tested according to the preset rule, and sequence the cells in the neighbor cell table to be tested. The preset rule may be set according to the specification in the 3GPP protocol or other protocols.

In an embodiment, if the frequency point corresponding to the neighboring cell a is a carrier aggregation frequency point supported by the terminal, the terminal may also perform measurement on the neighboring cell a and a cell in which the terminal currently resides together.

In one embodiment, the terminal may be configured with at least two channel estimation modules, where the channel estimation modules may be configured to perform channel estimation on cell signals measured by the first radio frequency device and the second radio frequency device, respectively, and report the estimation result to the access stratum to determine whether to perform cell reselection or cell handover.

For example, a terminal configured with at least two channel estimation modules may be configured with at least two card slots correspondingly. That is, two channel estimation modules may be configured with two card slots, and three channel estimation modules may be configured with three card slots.

In an embodiment, before controlling the first radio frequency device to measure the cell under the first frequency point and controlling the second radio frequency device to measure the cell under the second frequency point, the terminal may further configure and measure the relevant parameters of the corresponding frequency point, so as to obtain an accurate measurement result. The relevant parameters may be configured according to a 3GPP protocol or other communication protocols, and may include, for example: any one or more of frequency point, bandwidth and channel gain control AGC, which is not limited in this embodiment of the present invention.

In one embodiment, the terminal may pre-allocate the frequency points respectively measured by the first rf device and the second rf device, for example, the terminal may allocate the first rf device to measure the cell of frequency point 1 first, then measure the cell of frequency point 3, then measure the cell of frequency point 5, and so on; the terminal may also allocate the second radio frequency device to measure the cell of frequency point 2 first, then measure the cell of frequency point 4, then measure the cell of frequency point 6, and so on. Of course, the above-mentioned modes are only examples, not exhaustive, and include but are not limited to the above-mentioned alternatives.

902. And if the first radio frequency device or the second radio frequency device measures the target adjacent cell meeting the cell reselection condition, the terminal reselects the target adjacent cell meeting the cell reselection condition.

It should be noted that the cell reselection condition may be set according to a 3GPP protocol or other communication protocols.

In one embodiment, if any one of the first radio frequency device and the second radio frequency device measures a target neighboring cell meeting the cell reselection condition, the terminal may reselect the target neighboring cell meeting the cell reselection condition.

To better explain the cell measurement process according to the embodiment of the present invention, please refer to fig. 10, which is a schematic view of a cell measurement scenario according to the embodiment of the present invention, specifically, fig. 10 may include:

1001. and the terminal configures the neighbor area table to be tested according to the current network and sorts the cells in the neighbor area table to be tested according to a preset rule.

Specifically, the terminal may first configure the neighbor area table to be tested according to the current network condition, and sort the cells in the neighbor area table to be tested according to a preset rule.

1002. And the terminal controls the first radio frequency device to measure the cell under the first frequency point and controls the second radio frequency device to measure the cell under the second frequency point.

It should be noted that the first frequency point and the second frequency point may belong to frequency points under the same system (for example, both belong to frequency points under a 4G system), or may belong to frequency points under different systems (for example, one belongs to a 4G system, and one belongs to a 2G or 3G system, etc.), which is not limited in this application.

In an embodiment, the terminal may further determine the number of the frequency points to be measured, and allocate the frequency points to be measured to the first radio frequency device and the second radio frequency device, respectively, where the frequency points to be measured are allocated to the first radio frequency device to be measured as the first frequency point, and the frequency points to be measured by the second radio frequency device to be measured as the second frequency point. The first frequency point may have a plurality of frequency points, and the second frequency point may also have a plurality of frequency points.

Further, the terminal may also determine a measurement order for the first radio frequency device and the second radio frequency device, respectively, so that the first radio frequency device and the second radio frequency device perform measurement according to the determined measurement order. Moreover, the terminal may further be configured to configure the first radio frequency device and the second radio frequency device with the relevant parameters suitable for the corresponding measurement frequency point and the corresponding measurement channel (for example, channel (1) in fig. 1 is a measurement channel of the first radio frequency device, channel (3) is a measurement channel of the second radio frequency device, and the like). The related parameter may be a frequency point, a bandwidth, a channel gain control AGC, and the like.

It should be noted that the present application is not limited to simultaneously measuring by using two channels, and under the condition that the front-end channel capability and the processing capability of the terminal baseband signal support, the present application can also be extended to simultaneously measuring three or more channels to accelerate the measurement speed.

1003. And the terminal carries out channel estimation and measurement result calculation according to the cell signals received by the first radio frequency device and the second radio frequency device.

For example, the second rf device receives a measured cell signal, and the terminal performs channel estimation according to the cell signal received by the second rf device to obtain a measurement result of the cell signal, where the measurement result of the cell signal may be an RSRP value or an RSRQ value of the cell, and the like, which is not limited in this application.

1004. And the terminal judges whether the cell reselection condition is met according to the measurement result of the cell signal.

1005. And if so, reselecting and residing the terminal from the currently residing cell to the target neighboring cell meeting the cell reselection condition.

As a possible implementation manner, the terminal may control the first radio frequency device and the second radio frequency device to simultaneously measure cells with different frequency points if there is no transmission service in the case of using a single card.

It can be seen that, by the embodiment of the application, when the terminal is in the service idle state, the measurement speed can be accelerated and the power consumption of the terminal can be reduced by controlling the first radio frequency device and the second radio frequency device to measure the cells with different frequency points simultaneously.

Fig. 11 is a schematic flow chart of another cell measurement method according to an embodiment of the present invention. The method provided by the embodiment of the invention comprises the following steps:

1101. when the terminal is in a service non-idle state, the first radio frequency device and the network can be controlled to carry out service transmission, and the second radio frequency device is controlled to measure the cells in the neighbor cell list to be measured according to the preset frequency point sequence.

1102. And if the second radio frequency device measures the target adjacent cell meeting the cell switching condition, the terminal sends a switching request to the network equipment.

1103. And when receiving a switching response sent by the network equipment aiming at the switching request, the terminal controls the terminal to switch to the target adjacent cell meeting the cell switching condition.

The conditions for the terminal to perform handover may be: the terminal is in a service non-idle state, and a target adjacent cell meeting the cell switching condition is measured, a switching request can be sent to the network equipment, and if the network equipment responds to the request, the terminal can carry out switching.

It should be noted that the cell handover condition may be set according to a 3GPP protocol or other communication protocols.

In one embodiment, the terminal may release the second radio frequency device to perform cell measurement simultaneously during a service transmission period of one card when using dual cards or multiple cards, so that other cards perform cell switching in time, and the mobility performance of other cards is improved.

To better explain the cell measurement process according to the embodiment of the present invention, please refer to fig. 12, which is a schematic view of another cell measurement scenario provided in the embodiment of the present invention.

1201. And the terminal configures the neighbor area table to be tested according to the current network and sorts the cells in the neighbor area table to be tested according to a preset rule.

1202. And when the terminal is in a service state, determining whether to measure according to the current frequency point information to be measured and the current service resource use condition.

The current service state may be the amount of resources occupied by the current uplink and downlink tasks.

Specifically, the terminal can determine whether to perform measurement according to the current frequency point information to be measured and the current resource occupation state of the uplink and downlink tasks. If the resource amount occupied by the current uplink and downlink tasks is less than the preset resource amount value, the scheduling module of the terminal can determine to measure, and the terminal enters a measuring state; if the resource amount occupied by the current uplink and downlink tasks is greater than or equal to the preset resource amount value, the scheduling module of the terminal can determine not to measure.

1203. And if the terminal determines to measure, controlling the first radio frequency device and the network to carry out service transmission, and controlling the second radio frequency device to measure the cells in the neighbor cell list to be measured according to the preset frequency point sequence.

In an embodiment, if the terminal determines to measure, the terminal may further determine the number of the measured frequency points, and sequence the frequency points determined to be measured, where the sequencing result is a preset frequency point sequence. And, the terminal may also configure different channels (for example, channel 3 in fig. 1) to perform measurement reception on the frequency point, and configure relevant parameters of the frequency point suitable for the measurement, where the relevant parameters may be the frequency point, the bandwidth, the channel gain control AGC, and so on.

In one embodiment, the terminal may further determine whether a first radio frequency device performing a service can simultaneously support cell measurement, and if the first radio frequency device supports cell measurement, may allocate a frequency point matching the service being performed to the first radio frequency device, and rank the frequency points allocated to the first radio frequency device.

Meanwhile, the terminal may further configure a channel (e.g., channel (1) in fig. 1) to perform measurement reception on the frequency point corresponding to the first radio frequency device, and configure related parameters of the frequency point suitable for measurement by the first radio frequency device.

That is, the terminal may also allocate a measurement frequency point for the first radio frequency device transmitting the service to perform measurement, and allocate a corresponding frequency point for the second radio frequency device to perform measurement.

1204. And the terminal carries out channel estimation and measurement result calculation according to the cell signal received by the second radio frequency device.

For example, the second rf device receives a measured cell signal, and the terminal performs channel estimation according to the cell signal received by the second rf device to obtain a measurement result of the cell signal.

1205. And the terminal judges whether the cell c meets the cell switching condition according to the measurement result of the cell signal.

1206. And if so, the terminal sends a switching request to the network equipment.

For example, if the second radio frequency device measures that the cell c meets the cell handover condition, the terminal may send a handover request to the network device, where the handover request may carry a corresponding parameter of the cell c and a corresponding parameter of a cell where the terminal currently resides, so as to facilitate handover evaluation by the network device.

1207. And when receiving a switching response sent by the network equipment for the switching request, the terminal is switched to the cell c.

For example, if the network device responds to the handover request, the terminal may switch from the currently camped cell to the cell according to the handover cancel response; if the network device does not respond to the handover request, the terminal may still camp on the currently camped cell.

Therefore, according to the embodiment of the application, when the terminal is in a service non-idle state, the first radio frequency device is controlled to transmit the service with the network, and the second radio frequency device is controlled to measure the neighboring cell, so that timely switching to a better cell during the service period can be realized, the parallelism of a measurement function and a service function is realized, and the service experience is enhanced.

Fig. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention. The terminal described in this embodiment at least includes a first radio frequency device and a second radio frequency device, and includes:

a control module 1301, configured to control a first radio frequency apparatus to monitor a paging channel of a first cell, and control a second radio frequency apparatus to search for a cell within a preset range, where the first cell is a cell in which the terminal currently resides, and if there is a second cell that meets a cell residence condition, the terminal resides in the second cell.

An interrupting module 1302, configured to interrupt monitoring of a paging channel of the first cell.

In an embodiment, the control module 1301 is further configured to control the first radio frequency apparatus and the second radio frequency apparatus to monitor a paging channel of the first cell, and determine a cell signal of the first cell, and if the cell signal of the first cell is smaller than a first preset strength and is greater than or equal to a second preset strength, execute the control of the first radio frequency apparatus to monitor the paging channel of the first cell, and control the second radio frequency apparatus to search for a cell within a preset range.

In an embodiment, the control module 1301 is further configured to control the first radio frequency apparatus to search for a cell in a first standard and control the second radio frequency apparatus to search for a cell in a second standard when the paging channel is not monitored and the terminal is in a network searching state, and control the terminal to camp in the second cell if the first radio frequency apparatus or the second radio frequency apparatus searches for a second cell meeting a cell camping condition.

In one embodiment, the terminal further includes: a first entering module 1303, configured to, if the cell signal of the first cell is not received within a preset time, enter a network searching state by the terminal.

In one embodiment, the terminal further includes: a second entering module 1304, configured to, if the received signal strength of the cell signal of the first cell is smaller than a second preset strength, enter a network searching state by the terminal.

In an embodiment, the control module 1301 is specifically configured to control the first radio frequency apparatus and the network to perform service transmission when the terminal is in a service non-idle state, and control the second radio frequency apparatus to search for a cell within a preset range, where the cell within the preset range is a cell with a higher standard than the first cell.

In an embodiment, the control module 1301 is specifically configured to determine service quality when the terminal executes a service when the terminal is in a service non-idle state, and if the service quality meets a preset condition, control the first radio frequency device and the network to perform service transmission, and control the second radio frequency device to search for a cell within a preset range.

In the embodiment of the invention, the first radio frequency device is controlled to monitor the paging channel of the current resident cell and simultaneously control the second radio frequency device to search the network for the cell within the preset range, thereby effectively avoiding the phenomenon of missing paging of the terminal and improving the success rate of the called party of the terminal.

Fig. 14 is a schematic structural diagram of another terminal according to an embodiment of the present invention. The terminal described in this embodiment includes: a first Radio Frequency (RF) circuit 110, a second RF circuit 111, a memory 120, other input devices 130, a display 140, a sensor 150, an input/output subsystem 170, a processor 180, and a power supply 190. Those skilled in the art will appreciate that the terminal structure shown in fig. 14 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, some components may be split, or a different arrangement of components. Those skilled in the art will appreciate that the display 140 belongs to a User Interface (UI) and that the terminal may include fewer or more User interfaces than shown.

The following describes each constituent element of the terminal in detail with reference to fig. 14:

the first rf circuit 110 and the second rf circuit 111 may be used for receiving and transmitting signals during information transmission or communication, and in particular, receive downlink information of a base station and then process the received downlink information to the processor 180; in addition, the data for designing uplink is transmitted to the base station. Generally, the first rf circuit 110 and the second rf circuit 111 include, but are not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, an LNA (Low Noise Amplifier), a duplexer, and the like. In addition, the first rf circuit 110 and the second rf circuit 111 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), email, SMS (Short Messaging Service), and the like.

It is further noted that the first rf device may be combined with the first rf circuit 114, and the second rf device may be combined with the second rf circuit 111.

The memory 120 may be used to store software programs and modules, and the processor 180 executes various functional applications and data processing of the terminal 1 by operating the software programs and modules stored in the memory 120. The memory 120 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the terminal, etc. Further, the memory 120 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

Other input devices 130 may be used to receive entered numeric or character information and generate key signal inputs relating to user settings and function controls of the terminal. In particular, other input devices 130 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, a light mouse (a light mouse is a touch-sensitive surface that does not display visual output, or is an extension of a touch-sensitive surface formed by a touch screen), and the like. The other input devices 130 are connected to other input device controllers 171 of the input/output subsystem 170 and are in signal communication with the processor 180 under the control of the other input device controllers 171.

The display screen 140 may be used to display information input by or provided to the user and various menus of the terminal, and may also accept user input. The display screen 140 may include a display panel 141 and a touch panel 142. The Display panel 141 may be configured in the form of an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like. The touch panel 142, also referred to as a touch screen, a touch sensitive screen, etc., may collect contact or non-contact operations (e.g., operations performed by a user on or near the touch panel 142 using any suitable object or accessory such as a finger or a stylus, and may also include body sensing operations; including single-point control operations, multi-point control operations, etc.) on or near the touch panel 142, and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 142 may include two parts, i.e., a touch detection device and a touch controller. The touch detection device detects the touch direction and gesture of a user, detects signals brought by touch operation and transmits the signals to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into information that can be processed by the processor, sends the information to the processor 180, and receives and executes a command sent by the processor 180. In addition, the touch panel 142 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, a surface acoustic wave, and the like, and the touch panel 142 may also be implemented by any technology developed in the future. Further, the touch panel 142 may cover the display panel 141, a user may operate on or near the touch panel 142 covered on the display panel 141 according to the content displayed on the display panel 141 (the display content includes, but is not limited to, a soft keyboard, a virtual mouse, virtual keys, icons, etc.), the touch panel 142 detects the operation on or near the touch panel 142, and transmits the operation to the processor 180 through the input/output subsystem 170 to determine a user input, and then the processor 180 provides a corresponding visual output on the display panel 141 through the input/output subsystem 170 according to the user input. Although in fig. 4, the touch panel 142 and the display panel 141 are two separate components to implement the input and output functions of the terminal, in some embodiments, the touch panel 142 and the display panel 141 may be integrated to implement the input and output functions of the terminal.

The terminal may also include at least one sensor 150, such as a light sensor, a speed sensor, a GPS sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 141 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 141 and/or a backlight when the terminal is moved to the ear. As one of the speed sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping) and the like for recognizing the attitude of the terminal; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured in the terminal, detailed description is omitted here.

The external devices used by the input/output subsystem 170 to control input and output may include other devices, an input controller 171, a sensor controller 172, and a display controller 173. Optionally, one or more other input control device controllers 171 receive signals from and/or transmit signals to other input devices 130, and other input devices 130 may include physical buttons (push buttons, rocker buttons, etc.), dials, slide switches, joysticks, click wheels, a light mouse (a light mouse is a touch-sensitive surface that does not display visual output, or is an extension of a touch-sensitive surface formed by a touch screen). It is noted that other input control device controllers 171 may be connected to any one or more of the above-described devices. The display controller 173 in the input/output subsystem 170 receives signals from the display screen 140 and/or sends signals to the display screen 140. After the display screen 140 detects the user input, the display controller 173 converts the detected user input into an interaction with the user interface object displayed on the display screen 140, i.e., realizes a human-machine interaction. The sensor controller 172 may receive signals from one or more sensors 150 and/or transmit signals to one or more sensors 150.

The processor 180 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 120 and calling data stored in the memory 120, thereby performing overall monitoring of the terminal. Alternatively, processor 180 may include one or more processing units; preferably, the processor 180 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 180.

It is further noted that the control means may be integrated with the processor 180 of the terminal.

The terminal also includes a power supply 190 (e.g., a battery) for powering the various components, which may preferably be logically coupled to the processor 180 via a power management system to manage charging, discharging, and power consumption via the power management system.

Although not shown, the terminal may further include a camera, a bluetooth module, and the like, which will not be described herein.

Specifically, the processor 180 may call the program instructions stored in the memory 120 to implement the method according to the embodiment of the present invention.

Specifically, the processor 180 calls the program instructions stored in the memory 170 to execute the following steps:

controlling a first radio frequency device to monitor a paging channel of a first cell, and controlling a second radio frequency device to search for a cell within a preset range, wherein the first cell is a cell in which a terminal currently resides;

if a second cell meeting the cell residence condition exists, controlling the terminal to reside in the second cell;

the monitoring of the paging channel of the first cell is discontinued.

In one embodiment, the processor 180 is further configured to: controlling a first radio frequency device and a second radio frequency device to monitor a paging channel of the first cell and determine a cell signal of the first cell; and if the cell signal of the first cell is less than a first preset intensity and greater than or equal to a second preset intensity, controlling the first radio frequency device to monitor a paging channel of the first cell and controlling the second radio frequency device to search cells within a preset range.

In one embodiment, the processor 180 is further configured to: when the paging channel is not monitored and the network searching state is in, controlling the first radio frequency device to search a cell under a first standard, and controlling the second radio frequency device to search a cell under a second standard; and if the first radio frequency device or the second radio frequency device searches a second cell meeting the cell residence condition, controlling the terminal to reside in the second cell.

In one embodiment, the processor 180 is further configured to: and if the cell signal of the first cell is not received within the preset time length, the terminal enters a network searching state.

In one embodiment, the processor 180 is further configured to: and if the received signal intensity of the cell signal of the first cell is smaller than a second preset intensity, the terminal enters a network searching state.

In an embodiment, the processor 180 is configured to control the first radio frequency apparatus to monitor a paging channel of a first cell, and control the second radio frequency apparatus to search for a cell within a preset range, and specifically configured to: and when the terminal is in a service non-idle state, controlling the first radio frequency device and the network to carry out service transmission, and controlling the second radio frequency device to search a cell within a preset range, wherein the cell within the preset range is a cell with a system higher than that of the first cell.

In an embodiment, the processor 180 is configured to, when the terminal is in a non-idle service state, control the first radio frequency device and the network to perform service transmission, and control the second radio frequency device to search for a cell within a preset range, specifically: when the terminal is in a service non-idle state, determining the service quality when the terminal executes the service; and if the service quality meets the preset condition, controlling the first radio frequency device and the network to carry out service transmission, and controlling the second radio frequency device to search the cell within the preset range.

In one embodiment, the processor 180 may further invoke the program instructions stored in the memory 170 to perform the following steps:

when the service transmission is not carried out and the mobile terminal is in a measuring state, controlling the first radio frequency device to measure a cell under a first frequency point, and controlling the second radio frequency device to measure a cell under a second frequency point, wherein the cell under the first frequency point and the cell under the second frequency point are cells in the neighbor area list to be measured; and if the first radio frequency device or the second radio frequency device measures the target neighbor cell meeting the cell reselection condition, controlling the terminal to reselect the target neighbor cell meeting the cell reselection condition.

In an embodiment, the processor 180 is further configured to configure neighboring cell information according to a current network condition, select a cell entering the neighboring cell table to be tested according to a preset rule, and sort the cells in the neighboring cell table to be tested.

In one embodiment, the preset rule may be: and the terminal selects a cell entering the neighbor cell list to be tested according to the supported carrier aggregation frequency point.

In one embodiment, the first frequency point and the second frequency point may be frequency points under different systems.

In one embodiment, the first frequency point and the second frequency point may be frequency points under the same system. For example, the first frequency point and the second frequency point are both frequency points under a 4G system.

In an embodiment, the processor 180 is further configured to control the first radio frequency device and the network to perform service transmission when the terminal is in a service non-idle state, and control the second radio frequency device to measure the cells in the neighbor list to be measured according to a preset frequency point sequence; if the second radio frequency device measures a target adjacent cell meeting the cell switching condition, sending a switching request to network equipment; and when receiving a switching response sent by the network equipment aiming at the switching request, controlling the terminal to be switched to the target adjacent cell meeting the cell switching condition.

In an embodiment, the terminal may further include at least two channel estimation modules (not shown in the figure), and the channel estimation modules may be configured to perform channel estimation on cell signals measured by the first radio frequency device and the second radio frequency device, respectively, and report the estimation result to the access stratum to determine whether to perform cell reselection or cell handover.

The method executed by the processor in the embodiment of the present invention is described from the perspective of the processor, and it is understood that the processor in the embodiment of the present invention needs to cooperate with other hardware structures to execute the method. For example, controlling the first radio frequency device to monitor a paging channel of a first cell, controlling the second radio frequency device to search for a cell within a preset range, controlling the second radio frequency device to initiate a registration service for a second cell, and the like may be implemented by the processor 180 controlling the stored program in the memory 170. The embodiments of the present invention are not described or limited in detail for the specific implementation process.

In another embodiment of the present invention, a computer-readable storage medium is provided, which stores a computer program that, when executed by a processor, can implement: controlling a first radio frequency device to monitor a paging channel of a first cell, and controlling a second radio frequency device to search for a cell within a preset range, wherein the first cell is a cell in which a terminal currently resides; if a second cell meeting the cell residence condition exists, controlling the terminal to reside in the second cell; the monitoring of the paging channel of the first cell is discontinued.

It should be noted that, for specific processes executed by the processor of the computer-readable storage medium, reference may be made to the methods described in the method embodiments, and details are not described herein again.

In another embodiment of the present invention, a computer program product including instructions is provided, which when executed on a computer, causes the computer to execute the method described in the method embodiment, and will not be described herein again.

The computer readable storage medium may be an internal storage unit of the terminal according to any of the foregoing embodiments, for example, a hard disk or a memory of the terminal. The computer readable storage medium may also be an external storage device of the terminal, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the terminal. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal. The computer-readable storage medium is used for storing the computer program and other programs and data required by the terminal. The computer readable storage medium may also be used to temporarily store data that has been output or is to be output.

Based on the same inventive concept, the principle of the terminal to solve the problem provided in the embodiment of the present invention is similar to that of the embodiment of the method of the present invention, so the implementation of the terminal may refer to the implementation of the method, and for brevity, details are not described here again.

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.

Claims

1. A cell search method is characterized in that the cell search method is applied to a terminal, the terminal at least comprises a first radio frequency device and a second radio frequency device, the terminal further comprises a modulation and demodulation device, a channel occupied by a service function of the terminal comprises a first channel, a channel occupied by a network search function of the terminal comprises a second channel, the modulation and demodulation device controls the first radio frequency device and the second radio frequency device to execute the service function and the network search function through the first channel or the second channel, so that the service function or the network search function monopolizes the first radio frequency device and the second radio frequency device, and the method comprises the following steps:

controlling a first radio frequency device to monitor a paging channel of a first cell, and controlling a second radio frequency device to search for a cell within a preset range, wherein the first cell is a cell in which the terminal currently resides;

discontinuing monitoring of a paging channel of the first cell.

2. The method of claim 1, wherein prior to controlling the first radio frequency device to listen to a paging channel of the first cell and controlling the second radio frequency device to search for cells within a predetermined range, the method further comprises:

controlling the first radio frequency device and the second radio frequency device to monitor a paging channel of the first cell and determine a cell signal of the first cell;

and if the cell signal of the first cell is smaller than a first preset intensity and is greater than or equal to a second preset intensity, controlling the first radio frequency device to monitor a paging channel of the first cell and controlling the second radio frequency device to search for a cell within a preset range.

3. The method of claim 2, wherein the method further comprises:

when the terminal does not monitor a paging channel and is in a network searching state, controlling the first radio frequency device to search a cell under a first standard, and controlling the second radio frequency device to search a cell under a second standard;

and if the first radio frequency device or the second radio frequency device searches a second cell meeting the cell residence condition, controlling the terminal to reside in the second cell.

4. The terminal of claim 3, wherein the method further comprises:

and if the cell signal of the first cell is not received within the preset time length, the terminal enters a network searching state.

5. The terminal of claim 3 or 4, wherein the method further comprises:

and if the received signal intensity of the cell signal of the first cell is smaller than a second preset intensity, the terminal enters a network searching state.

6. The method of claim 1, wherein controlling the first radio frequency device to listen to a paging channel of the first cell and controlling the second radio frequency device to search for cells within a predetermined range comprises:

and when the terminal is in a service non-idle state, controlling a first radio frequency device and a network to carry out service transmission, and controlling a second radio frequency device to search a cell within a preset range, wherein the cell within the preset range is a cell with a system higher than that of the first cell.

7. The method of claim 6, wherein the controlling the first radio frequency device and the network to perform service transmission and controlling the second radio frequency device to search for a cell within a preset range when the terminal is in a service non-idle state comprises:

when the terminal is in a service non-idle state, determining the service quality when the terminal executes the service;

and if the service quality meets a preset condition, controlling the first radio frequency device and the network to carry out service transmission, and controlling the second radio frequency device to search the cell within a preset range.

8. A terminal is provided, the terminal includes first radio frequency device and second radio frequency device at least, the terminal still includes modem, the shared passageway of the business function of terminal includes first passageway, the shared passageway of the net function of searching of terminal includes the second passageway, modem passes through first passageway or second channel control first radio frequency device and second radio frequency device carry out the business function, search the net function for the business function or search the net function and monopolize first radio frequency device and second radio frequency device, include:

a control module, configured to control a first radio frequency device to monitor a paging channel of a first cell, and control a second radio frequency device to search for a cell within a preset range, where the first cell is a cell in which the terminal currently resides, and if a second cell meeting a cell residence condition exists, control the second radio frequency device to initiate a registration service for the second cell, where the registration service is used to reside the terminal in the second cell;

a camping module, configured to camp the terminal to the second cell;

an interruption module to interrupt monitoring of a paging channel of the first cell.

9. The terminal of claim 8, wherein the control module is further configured to control the first radio frequency device and the second radio frequency device to monitor a paging channel of the first cell, determine a cell signal of the first cell, and if the cell signal of the first cell is smaller than a first preset strength and greater than or equal to a second preset strength, perform the control of the first radio frequency device to monitor the paging channel of the first cell, and control the second radio frequency device to search for a cell within a preset range.

10. The terminal of claim 9, wherein the control module is further configured to control the first radio frequency apparatus to search for a cell in a first standard and control the second radio frequency apparatus to search for a cell in a second standard when the paging channel is not monitored and the network searching state is in the network searching state, control the first radio frequency apparatus to initiate a registration service to the second cell if the first radio frequency apparatus searches for a second cell that satisfies a cell residence condition, and control the second radio frequency apparatus to initiate a registration service to the second cell if the second radio frequency apparatus searches for a second cell that satisfies a cell residence condition.

11. The terminal of claim 10, wherein the terminal further comprises:

and the first entering module is used for entering the network searching state if the cell signal of the first cell is not received within the preset time length.

12. The terminal according to claim 10 or 11, characterized in that the terminal further comprises:

and the second entering module is used for entering the network searching state if the received signal intensity of the cell signal of the first cell is smaller than a second preset intensity.

13. The terminal of claim 8, wherein the control module is specifically configured to control the first radio frequency device to monitor a paging channel of a first cell and control the second radio frequency device to search for a cell within a preset range when the terminal is in a non-idle service state, where the cell within the preset range is a cell having a higher standard than that of the first cell.

14. The terminal of claim 13, wherein the control module is specifically configured to determine a service quality when the terminal performs a service when the terminal is in a service non-idle state, and if the service quality meets a preset condition, control the first radio frequency device to monitor a paging message sent by a first cell, and control the second radio frequency device to search for a cell within a preset range.

15. A terminal, characterized in that the terminal comprises:

a memory for storing one or more programs;

a processor for executing a program in the memory to cause the terminal to perform the method of any of claims 1 to 7.

16. A computer-readable storage medium, in which a computer program is stored, characterized in that the computer program comprises program instructions which, when run on a computer, cause the computer to carry out the method according to any one of claims 1 to 7 when executed by a processor.