WO2015157925A1

WO2015157925A1 - Network searching method and network searching device, and terminal

Info

Publication number: WO2015157925A1
Application number: PCT/CN2014/075430
Authority: WO
Inventors: 祝芳浩; 黄育盛; 马怡伟; 李胡送; 李伟清
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2014-04-15
Filing date: 2014-04-15
Publication date: 2015-10-22
Also published as: CN106465236B; RU2016142452A; CN106465236A

Abstract

Provided is a network searching method, comprising: a terminal getting out of service from a first network or having not yet registered to the first network (202); and when it is detected that there is a need for data service, the terminal performing a searching operation on the first network. The present invention also proposes a corresponding network searching device and a terminal (204). By means of the technical solution of the present invention, not only the frequency and/or the number of times of network searching of a terminal can be controlled to avoid a waste of power consumption of the terminal caused by frequently blind network searching, but also the terminal can be facilitated to access a specific network as soon as possible thus to improve user experience.

Description

Description Network search method and network search device, terminal

The present invention relates to the field of wireless communication technologies, and in particular, to a network search method, a network search device, and a terminal. Background technique

The communication field has entered the 4G era, and the entire network architecture has undergone a very big change compared with 2G/3G. As the most basic and important requirement of wireless communication, voice service is implemented in 4G for network operators and terminal providers. There is no small trouble. At this stage, major chip manufacturers and 3GPP organizations have proposed different solutions for operators to choose, mainly including single-card dual-standby solution (SGLTE/SVLTE), circuit domain fallback scheme (CSFB), S VCC. /VOLTE, SVLTE (Simultaneous Voice and LTE, LTE and voice network synchronization support) Single card dual standby system has no special requirements on the network, network side changes are small, no need to deploy IMS, and is favored by domestic operators.

At the beginning of 4G network construction, 4G network coverage still does not reach seamless coverage. Even operators pay regional coverage in some cities and regions for cost reasons. This is bound to exist for 4G off-network for mobile terminals. problem.

As shown in Figure 1, 4 is determined in Figure 1 (a), the UE is dual-standby or single-standby 4G network on the 3G and 4G networks; when the UE leaves the 4G network coverage area, the 4G network will be disconnected, which may enter Figure 1 (b) shows the connection to the 2G and 3G networks, or when the UE leaves the 4G and 3G network coverage areas, it may enter the situation shown in Figure 1 (c), that is, only connected to the 2G network, or The UE may be in or in the area shown in Figure 1 (e) without any mobile network coverage, UE out-of-service (OOS), and when the UE returns to the 4G network, as shown in Figure 1 (d) Users obviously want to be able to quickly return to the 4G network, but for the sake of power consumption of the terminal, it is obviously impossible for the UE to continuously try to search and access the 4G network. Therefore, how to avoid the waste of UE power caused by blind search and enable the UE to access a specific network (such as a 4G network) as soon as possible has become a technical problem to be solved.

Summary of the invention

The invention is based on the above problems, and proposes a new technical solution, which can control the network search frequency and/or the number of times of the terminal according to the change of the position of the terminal, and avoid frequent blind search of the network to cause power consumption of the terminal. Waste, and can help the terminal access a specific network as soon as possible, which helps to enhance the user experience.

In view of this, the present invention provides a network search method, including: the terminal is off-network from the first network or has not been registered to the first network; when detecting that there is a data service requirement, the terminal performs the A network search operation.

In the technical solution, determining whether to perform a search operation on the first network based on the existence of the data service requirement in the terminal, so that each search is initiated based on the requirement, which not only meets the user's use requirements and usage psychology. Moreover, it is possible to avoid blind power search and increase the power consumption of the terminal, which helps to extend the standby time of the terminal.

Therefore, by detecting whether there is a data service requirement in the terminal, blind search is avoided when there is no data service requirement, and a search operation for the first network can be started in time when there is a data service demand.

Wherein, for the multimode terminal, after the terminal is disconnected from the first network, it can reside in the second network to ensure continuity of communication. Alternatively, the technical solution of the present application is also applicable to other scenarios. For example, when the terminal is powered on in an area that does not cover the first network, the terminal can first register to the second network, and combine the above-mentioned search operation based on the data service requirement to ensure the terminal quickly searches. At the same time as the first network, avoid blind search, which helps to reduce the power consumption of the terminal.

The first network and the second network may be any two different wireless mobile communication networks. For example, for a base station in the same location, the coverage of the first network may be smaller than the coverage of the second network. More specifically and preferably, for example, the first network may be a 4G network (such as LTE), and the second network may be a 2G network (such as GSM, GPRS, EDGE CDMA IX, etc.) or a 3G network (such as CDMA2000, TD-SCDMA/TD) -HSPA, WCDMA/HSPA, etc.).

Because 2G/3G network has early layout time and perfect network optimization, its network coverage is usually larger and more comprehensive than the 4G network deployed later. Therefore, 4G off-network and 2G/3G are not off-network. These areas are prone to appear.

In the above technical solution, preferably, if the data service requirement is detected, the method further includes: when the terminal resides in the second network, if the terminal is in the second network The serving cell and/or the neighboring cell change, and the terminal performs a search operation on the first network.

In this technical solution, when camping on the second network, since the terminal is necessarily connected to the nearby cell, the direct change of the corresponding serving cell and/or neighboring cell in the second network can be directly It reflects the change of the position of the terminal under the second network, that is, the change of the serving cell and/or the neighboring cell, which is necessarily caused by the change of the position of the terminal, and the terminal is likely to change the position of a large distance.

Therefore, when the location change generated by the terminal is greater than or equal to a predetermined value, the terminal is likely to enter/re-enter the coverage area of the first network, and at this time, by performing a search operation on the first network, the success rate of the search network is increased, and It can avoid the blind power search and increase the power consumption of the terminal, which helps to extend the standby time of the terminal.

In the above technical solution, preferably, determining that the serving cell and/or the neighboring cell corresponding to the terminal change comprises: changing, by the terminal, the identifier of the serving cell and/or the neighboring cell corresponding to the second network, The terminal is off the network from the second network, the terminal performs cell selection or cell reselection operation in the second network, the terminal performs a cell handover operation on the second network, or the terminal is in the The second network performs a cell update operation.

In the above technical solution, preferably, the method further includes: when the number of consecutive failures of the searching operation of the terminal to the first network is greater than or equal to a preset number of times, the terminal stops performing based on the serving cell and/or A search operation of the first network for the change of the neighboring cell.

In this technical solution, by counting the number of consecutive failures, when the number of consecutive failures is large (for example, the number of consecutive failures is greater than or equal to the preset number of times), it may indicate that the first network may not be covered in a large range. Therefore, in the subsequent operation, even if the serving cell and/or the neighboring cell corresponding to the terminal change, the search operation on the first network is not performed according to this, which helps the terminal to reduce power consumption and prolong the standby time of the terminal.

In the above technical solution, preferably, if it is detected that the data service requirement exists, the method further includes: acquiring real-time location information of the terminal; when determining according to the real-time location information When the location change distance of the terminal is greater than or equal to a preset change amount, the terminal performs a search operation on the first network.

In the technical solution, when the second network is residing, by acquiring the real-time location information of the terminal, the location change of the terminal can be accurately understood, and when the location of the terminal changes over a large distance, the first time is started. A network search operation.

In the above technical solution, preferably, acquiring the real-time location information of the terminal specifically includes: acquiring the real-time location information by using a satellite positioning module in the terminal; and/or when the terminal resides in the second network The real-time location information of the terminal is received from the network side.

In the technical solution, the real-time location information of the terminal can be directly measured by the satellite positioning module configured by the terminal itself, and specifically, a GPS positioning system such as the US, a Beidou positioning system in China, a Galileo positioning system in Europe, and a Russian The GLONASS positioning system or the like; the real-time location information of the terminal may be known by the network side and notified to the terminal. Specifically, the base station under the second network may receive the azimuth according to the signal from the terminal, or may separately and according to the terminal. The relationship between the signal reception strengths between the base stations, etc., determines the real-time location information of the terminal.

In the above technical solution, preferably, the method further includes: when the number of consecutive failures of the search operation of the terminal to the first network is greater than or equal to a preset number of times, the terminal stops executing the pair based on the location change distance The search operation of the first network.

In the above technical solution, preferably, when the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times, the method further includes: starting a timer, and the ending After the timer expires, the terminal initiates a search operation on the first network.

In the technical solution, the timer-based network search mode is adopted, that is, the terminal performs a search operation on the first network every time the timer expires, and if successful, accesses the first network, otherwise the timer is reset. After waiting for the timer to time out again, the search operation on the first network is re-executed.

Since the terminal stops performing the network-based operation based on the change of the cell (the serving cell and/or the neighboring cell) when the number of consecutive failures is large, the timer-based network search operation enables the terminal power consumption to be reduced while To some extent, the timeliness of searching for the first network is ensured, and the user is prevented from entering/returning to the coverage area of the first network but cannot register for a long time.

In the above technical solution, the method further includes: if the searching operation of the first network initiated by the terminal after the timer expires, the number of consecutive failures is subtracted from a preset value, A search operation for the first network based on a change of the serving cell and/or a neighboring cell or based on the location change distance is re-executed by the terminal.

In this technical solution, when the timer-based search operation fails, for the case that the timer-based search frequency is low, in order to improve the timeliness of the terminal re-accessing the first network, the number of consecutive failures may be changed. If the number of consecutive failures is reduced to less than the preset number of times, the terminal can re-execute a network search operation based on the cell change/location change distance, avoiding waiting for the timer to time out too long, which helps to shorten the user's waiting time. time.

In the above technical solution, preferably, the method further includes: when the terminal fails to perform a search operation on the first network after the timer expires, restarting the timer immediately, or increasing according to a preset manner. The timer is timed and restarts the timer.

In this technical solution, by increasing the timing of the timer, the frequency of the terminal performing the search operation on the first network can be further reduced, thereby helping to reduce the power consumption of the terminal, which is beneficial to the terminal to save power, especially for a wide range. When the area without LTE network coverage moves quickly, the number of searches can be significantly reduced. Of course, it is also possible to use a fixed timing duration, so that there is no need to adjust the timing.

In the above technical solution, preferably, when the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times, the method further includes: if the terminal initiates a routing area update request or a location area update The request initiates a search operation on the first network. In this technical solution, due to the initiation of the routing area update request or the location area update request, the location of the terminal is inevitably changed, and the terminal is likely to return to the coverage area of the first network due to the change of the location area, and accordingly The search operation on the first network is not performed blindly, but has a greater chance of successfully searching for the first network, which helps the user to successfully and quickly restore to the first network and improve the user experience.

In the above technical solution, preferably, the method further includes: if the search operation initiated by the terminal based on the routing area update request or the location area update request fails on the first network, subtracting the consecutive failure times A value is set to re-execute a search operation for the first network based on a change in the serving cell and/or a neighboring cell or based on the location change distance by the terminal.

In this technical solution, if the network searching operation based on the routing area update request or the location area update request still fails, in order to improve the timeliness of the terminal re-accessing the first network, the number of consecutive failures may be changed, for example, The number of failures is reduced to less than the preset number, so that the terminal can re-execute a network search operation based on the cell change/location change distance, and avoid waiting for the terminal to initiate the routing area update request or the location area update request for too long, which helps to shorten User's waiting time.

In any one of the foregoing technical solutions, the method further includes: determining, in a case where the terminal has a data service requirement, determining whether a change value of the one or more selected parameters of the terminal under the second network is greater than Or, when the value is equal to the corresponding preset change value, the terminal is allowed to perform a search operation on the first network, where the selected parameter includes at least one of the following or a combination thereof: the serving cell corresponding to the terminal and/or Or the signal strength of the neighboring cell, the transmit power strength and/or the transmit signal strength of the terminal, the transmit delay and/or the receive delay corresponding to the terminal, the bit error rate and/or the block error rate of the terminal. And a signal to noise ratio and/or a signal to interference ratio corresponding to the terminal.

In this technical solution, when the position of the terminal changes by a large distance, the change value of the above various selected parameters is large (for example, greater than or equal to the corresponding preset change value), and the terminal is likely to enter/ Returns the coverage area of the first network. Therefore, by determining the change value of the selected parameter, the position change of the terminal can be reflected, and it is determined whether the terminal is allowed to perform the search operation on the first network, and the blind search can be avoided to a certain extent. In order to reduce the power consumption of the terminal, it is beneficial to save power in the terminal. The present invention also provides a network search apparatus, including: a requirement detecting unit, configured to detect whether a data service requirement exists in the terminal after the terminal is off-network from the first network or not registered to the first network; And a unit, configured to perform a search operation on the first network if it is detected that the data service requirement exists.

Wherein, for the multimode terminal, after the terminal is disconnected from the first network, it can reside in the second network to ensure continuity of communication. Alternatively, the technical solution of the present application is also applicable to other scenarios. For example, when the terminal is powered on in an area that does not cover the first network, the terminal can first register to the second network, and combine the above-mentioned location-based search operation to ensure that the terminal quickly searches. At the same time as the first network, avoiding blind search can help reduce terminal power consumption.

Because 2G/3G network has early layout time and perfect network optimization, its network coverage is usually larger and more comprehensive than the 4G network deployed later. Therefore, 4G off-network and 2G/3G non-off-network are easy to appear in some areas.

In the above technical solution, the method further includes: a cell change determining unit, configured to determine, when the terminal resides in the second network, that the terminal is present in the case that the data service requirement is detected Whether the corresponding serving cell and/or the neighboring cell in the second network is changed; wherein the network searching unit performs the first step when the serving cell and/or the neighboring cell corresponding to the terminal changes Network search operations. In this technical solution, when camping on the second network, since the terminal is necessarily connected to the nearby cell, the direct change of the corresponding serving cell and/or neighboring cell in the second network can be directly It reflects the change of the position of the terminal under the second network, that is, the change of the serving cell and/or the neighboring cell, which is necessarily caused by the change of the position of the terminal, and the terminal is likely to change the position of a large distance.

In the above technical solution, the cell change determination unit is specifically configured to: when the identifier of the serving cell and/or the neighboring cell corresponding to the second network changes, the terminal is from the The second network is off the network, the terminal performs cell selection or cell reselection operation in the second network, the terminal performs a cell handover operation on the second network, or the terminal performs a cell update operation on the second network. In case, it is determined that the serving cell and/or the neighboring cell corresponding to the terminal change.

In the above technical solution, preferably, the network search unit is further configured to: when the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times, stop performing A search operation for the first network of changes in the serving cell and/or the neighboring cell.

In the above technical solution, the method further includes: a location information acquiring unit, configured to acquire real-time location information of the terminal; and a location change determining unit, configured to determine, according to the real-time location information, a location change distance of the terminal Whether the greater than or equal to the preset amount of change is satisfied; wherein the network search unit performs a search operation on the first network if the determination result is satisfied and the presence of the data service requirement is detected. In the technical solution, when the second network is residing, by acquiring the real-time location information of the terminal, the location change of the terminal can be accurately understood, and when the location of the terminal changes over a large distance, the first time is started. A network search operation.

In the above technical solution, the location information acquiring unit is specifically configured to: acquire the real-time location information by using a satellite positioning module in the terminal; and/or when the terminal resides in the second network Receiving real-time location information of the terminal from the network side.

In the above technical solution, preferably, the network search unit is further configured to: when the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times, stop performing A search operation of the first network for the location change distance.

In the above technical solution, the method further includes: a timer management unit, configured to start a timer if the number of consecutive failures of the search operation of the first network by the terminal is greater than or equal to a preset number of times, Initiating a search operation for the first network by the network search unit after the timer expires. In the technical solution, the timer-based network search mode is adopted, that is, the terminal performs a search operation on the first network every time the timer expires, and if successful, accesses the first network, otherwise the timer is reset. After waiting for the timer to time out again, the search operation on the first network is re-executed.

In the above technical solution, the method further includes: a network search frequency control unit, configured to: when the search operation for the first network fails after the timer expires, subtract the consecutive failure times Presetting a value to re-execute a search operation for the first network based on a change of the serving cell and/or a neighboring cell or based on the location change distance by the network search unit.

In this technical solution, when the timer-based search operation fails, for the case that the timer-based search frequency is low, in order to improve the timeliness of the terminal re-accessing the first network, the number of consecutive failures may be changed. If the number of consecutive failures is reduced to less than the preset number of times, the terminal can re-execute a network search operation based on the position change distance, and avoid waiting for the timer to time out too long, which helps to shorten the waiting time of the user.

In the foregoing technical solution, the timer management unit is further configured to: when the terminal fails to perform a search operation on the first network after the timer expires, restart the timer immediately. Or increase the timing of the timer and restart the timer according to a preset manner.

In the above technical solution, the network search unit is further configured to: when the number of consecutive failures of the search operation of the terminal to the first network is greater than or equal to a preset number of times And, if the terminal initiates a routing area update request or a location area update request, initiate a search operation on the first network.

In this technical solution, due to the initiation of the routing area update request or the location area update request, the location of the terminal is inevitably changed, and the terminal is likely to return to the coverage area of the first network due to the change of the location area, and accordingly The search operation on the first network is not performed blindly, but has a greater chance of successfully searching for the first network, which helps the user to successfully and quickly restore to the first network and improve the user experience.

In the above technical solution, preferably, the method further includes: a network search frequency control unit, configured to: when the initiated search operation for the first network based on the routing area update request or the location area update request fails, The number of consecutive failures is subtracted from a preset value to re-execute a search operation for the first network based on a change in the serving cell and/or a neighboring cell or based on the location change distance by the network search unit.

In this technical solution, if the network searching operation based on the routing area update request or the location area update request still fails, in order to improve the timeliness of the terminal re-accessing the first network, the number of consecutive failures may be changed, for example, The number of failures is reduced to less than the preset number, so that the terminal can re-execute a network search operation based on the location change distance, and avoid waiting for the terminal to initiate a routing area update request or a location area update request for a long time, which helps to shorten the user's waiting time. time.

In any one of the foregoing technical solutions, the method further includes: a combination condition determining unit, configured to determine whether the terminal meets the following combination condition: in a case where the terminal has a data service requirement, the terminal is in the The change value of the one or more selected parameters in the second network is greater than or equal to the corresponding preset change value; wherein, the network search unit initiates the first network if the terminal meets the corresponding condition Search operation; and the selected parameter includes at least one of the following or a combination thereof: signal strength of the serving cell and/or neighboring cell corresponding to the terminal, transmit power strength of the terminal, and/or transmit signal strength, a transmission delay and/or a reception delay corresponding to the terminal, a bit error rate and/or a block error rate corresponding to the terminal, a signal to noise ratio and/or a signal to interference ratio corresponding to the terminal.

In this technical solution, when the position of the terminal changes by a large distance, the change value of the above various selected parameters is large (for example, greater than or equal to the corresponding preset change value), and the terminal It is therefore possible to enter/return to the coverage area of the first network. Therefore, by determining the change value of the selected parameter, the position change of the terminal can be reflected, and it is determined whether the terminal is allowed to perform the search operation on the first network, and the blind search can be avoided to a certain extent. In order to reduce the power consumption of the terminal, it is beneficial to save power in the terminal.

The present invention also provides a terminal, comprising: the network search device according to any one of the above aspects.

Through the above technical solution, according to the change of the location of the terminal, the network search frequency and/or the number of times of the terminal can be controlled, the frequent blind search can be avoided, the terminal power consumption is wasted, and the terminal can access the specific network as soon as possible. Helps improve the user experience. DRAWINGS

FIG. 1 is a schematic diagram showing a process of UE off-network and re-searching in the related art;

2 is a flow chart showing a network search method according to an embodiment of the present invention; FIG. 3 is a flow chart showing a network search in combination with a cell change according to an embodiment of the present invention;

4 is a schematic flowchart of performing network search based on cell change in the embodiment shown in FIG. 3; FIG. 5 is a schematic flowchart showing network search by combining position change distance according to an embodiment of the present invention;

6 is a schematic flow chart of performing network search based on a position change distance in the embodiment shown in FIG. 5;

7A through 7C are flowcharts showing a network search performed based on a cell change/location change distance and a timer, according to an embodiment of the present invention;

8A to 8C are flowcharts showing a network search performed based on a cell change/location change distance and a region update according to an embodiment of the present invention;

FIG. 9 is a flow chart showing the implementation of a network search in combination with an auxiliary parameter according to an embodiment of the present invention; FIG.

Figure 10 shows a schematic block diagram of a network search device in accordance with one embodiment of the present invention; Figure 11 shows a schematic block diagram of a terminal in accordance with one embodiment of the present invention. detailed description

The above described objects, features and advantages of the present invention will be more fully understood from the following detailed description. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments of the present application may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the invention, but the invention may be practiced in other embodiments other than those described herein. Limitations of specific embodiments.

2 is a flow chart showing a network search method according to an embodiment of the present invention. As shown in FIG. 2, the network search method according to an embodiment of the present invention includes: Step 202: The terminal is disconnected from the first network or not registered to the first network; Step 204, when it is detected that there is a data service requirement The terminal performs a search operation on the first network.

The first network and the second network may be any two different wireless mobile communication networks. For example, for a base station in the same location, the coverage of the first network may be smaller than the coverage of the second network. More specifically and preferably, for example, the first network may be a 4G network (such as LTE), and the second network may be a 2G network (such as GSM, GPRS, EDGE CDMA IX, etc.) or a 3G network (such as CDMA2000, TD-SCDMA/TD) -HSPA, WCDMA/HSPA, etc.). First, the combination with the change of the community

When it is judged whether the terminal needs to initiate a search operation for the first network, the cell change situation can be combined with the data service requirement in the terminal. 3 is a flow chart showing a network search in combination with a cell change according to an embodiment of the present invention.

As shown in FIG. 3, the process of implementing network search in combination with cell change according to an embodiment of the present invention includes:

Step 302: Detecting a data service requirement in the terminal;

Step 304: When the terminal changes in a corresponding serving cell and/or a neighboring cell in the second network, the terminal performs a searching operation on the first network.

1. Judging conditions

In the flow shown in Figure 3, step 304 involves the determination of "changes in the serving cell and/or neighboring cell corresponding to the terminal". Specifically, the judging process can adopt various methods, for example, the following judging conditions can be used:

The identity of the serving cell and/or the neighboring cell corresponding to the terminal changes, the terminal is disconnected from the second network, the terminal performs a reselection operation, the terminal performs a cell handover operation, or the terminal performs a cell update operation.

Therefore, when at least one of the above conditions is satisfied, it can be determined that the service cell and/or the neighbor cell corresponding to the terminal has changed.

2, the specific process

The following conditions are changed by the cell identifier (ie, the identifier of the serving cell and/or the neighboring cell). For example, the above technical solution will be described in detail with reference to FIG. 4. 4 is a schematic flowchart of performing network search (specifically, step 304) based on cell change in the embodiment shown in FIG.

As shown in FIG. 4, in the case of determining the data service requirement in the terminal, the process of performing network search based on the cell change according to an embodiment of the present invention includes:

Step 402: The UE (the user equipment, that is, the terminal) is off-network from LTE or has not been registered to the LTE network, and enters the LTE background search working state.

Specifically, the LTE is the "first network" and the 2G/3G network is the "second network" as an example.

Step 404: After the UE registers with the 2G/3G network, record the cell ID of the serving cell and/or the neighboring cell of the UE in the 2G/3G network.

Specifically, the cell ID (ie, Cell ID) may be a cell ID of a wireless network in a narrow sense; or may be a cell ID in a broad sense, such as a CGI (Cell Global Identifier).

Step 406: Determine whether the cell ID of the serving cell and/or the neighboring cell changes.

Specifically, on the one hand, the previously recorded cell ID is stored in the UE; on the other hand, when the UE performs or is about to perform cell change, the cell ID of the target cell exists. Therefore, by comparing the recorded cell ID with the cell ID of the target cell, it is determined whether the cell ID changes, and whether the serving cell and/or the neighboring cell corresponding to the UE change.

If the change occurs, the process proceeds to step 408, otherwise the process continues.

Step 408: Perform an LTE search registration on the result of the determination of the change of the cell ID in step 406.

Specifically, since the change of the cell ID means that the UE has a position change of a large distance, the UE is likely to re-move to the LTE coverage, and thus performs the search and registration operation for the LTE on the condition that the "cell ID changes". , can avoid the terminal power loss caused by the blind search network, and can improve the success rate of the UE re-accessing the LTE network.

Step 410: Determine whether the LTE search registration operation is successful. If successful, proceed to step 412, otherwise return to step 404.

Step 412: The UE exits the LTE background search working state and enters a normal working state. Of course, the "off-network" scenario is taken as an example here. In fact, the technology of the present invention The scenario also applies to other scenarios. For example, when the UE is powered on in an area that does not cover the LTE network, the UE can first register to the 2G/3G network, and then perform a search for the LTE network based on the process shown in FIG. 4, so that the LTE network can be quickly searched. It can avoid blind search and help reduce the power consumption of the UE.

Second, the combination of position change distance

When judging whether a search operation for the first network needs to be initiated by the terminal, the location change situation can be combined with the data service requirement in the terminal. 5 is a flow chart showing a network search by combining position change distances according to an embodiment of the present invention.

As shown in FIG. 5, the process of implementing network search by combining position change distances according to an embodiment of the present invention includes:

Step 502: Detecting a data service requirement in the terminal;

Step 504: Obtain real-time location information of the terminal.

Step 506: When determining, according to the real-time location information, that the location change distance of the terminal is greater than or equal to a preset change amount, the terminal performs a search operation on the first network.

In the technical solution, by acquiring the real-time location information of the terminal, it is possible to accurately understand the location change of the terminal, and start the search operation for the first network in time when the location of the terminal changes over a large distance.

Therefore, when the location change generated by the terminal is greater than or equal to a predetermined value, the terminal is likely to enter/re-enter the coverage area of the first network, and at this time, by performing a search operation on the first network, the success rate of the search network is increased. It can also avoid blind search and lead to increased power consumption of the terminal, which helps to extend the standby time of the terminal.

1. Information acquisition

In the flow shown in Figure 5, step 504 involves the acquisition of "real time location information." Specifically, the obtaining process can be implemented in various manners, for example, the following methods can be used: (1) terminal acquisition

Preferably, obtaining real-time location information of the terminal specifically includes: acquiring the real-time location information by using a satellite positioning module in the terminal.

Specifically, a GPS positioning system such as the United States, a Beidou positioning system in China, a Galileo positioning system in Europe, a GLONASS positioning system in Russia, and the like can be configured in the terminal. A satellite positioning module to obtain real-time location information of the terminal.

(2) Network side acquisition

Preferably, obtaining real-time location information of the terminal specifically includes: For the multi-mode terminal, if the terminal resides in the second network, the terminal may receive real-time location information of the terminal from the network side of the second network.

Specifically, the real-time location information of the terminal is acquired by the network side, and the real-time location information is notified to the terminal. The network side can obtain the real-time location information of the terminal by the following methods:

1) After the terminal registers with the second network, the cell is served by the cell corresponding to a certain base station. When receiving the signal from the terminal, the base station can determine the real-time location information of the terminal according to the received azimuth of the signal.

2) After the terminal registers with the second network, the relationship between the signal reception strength between the terminal and the plurality of base stations can be determined at the same time (or time period), thereby determining the real-time location information of the terminal.

2, the specific process

The above technical solution will be described in detail below with reference to FIG. 6 is a schematic flowchart of performing network search (specifically, step 504 and step 506) based on the position change distance in the embodiment shown in FIG. 5.

As shown in FIG. 6, in the case of determining the data service requirement in the terminal, the process of performing the network search based on the location change distance according to an embodiment of the present invention includes:

Step 602: The UE is disconnected from the LTE or has not been registered to the LTE network, and enters the LTE background search working state.

Step 604: Record real-time location information of the UE.

Specifically, the real-time location information may be measured by the UE itself, or may be notified by the network side.

Step 606: Determine, according to the real-time location information of the UE, whether the location change distance L of the UE satisfies the preset distance change amount L0. If yes, go to step 608, otherwise continue to wait. Specifically, on the one hand, the UE records the previously recorded real-time location information; on the other hand, the UE also continuously acquires new real-time location information. Therefore, by comparing the real-time position information sequentially recorded before and after, the position change distance of the UE can be determined.

Step 608: Perform an LTE search registration on the result of the determination of the location change of the UE in step 606.

In particular, since the location change distance of the UE is large, it is likely to be re-moved into the LTE coverage range, thereby avoiding terminal power loss caused by blind search, and improving the success rate of the UE re-accessing the LTE network. .

Step 610: Determine whether the LTE search registration operation is successful. If successful, proceed to step 612, otherwise return to step 604.

Step 612: The UE exits the LTE background search working state and enters a normal working state. Of course, the "off-network" scenario is taken as an example here. In fact, the technical solution of the present invention is also applicable to other scenarios. For example, when the UE is powered on in an area that does not cover the LTE network, it can register to the 2G/3G network first, and then perform a search for the LTE network based on the process shown in FIG. 6, so that the LTE network can be quickly searched, and It can avoid blind search and help reduce the power consumption of the UE.

Third, the terminal saves electricity

Preferably, in the technical solution shown in FIG. 3 or FIG. 4, the number of consecutive failures of the cell change-based LTE search operation may be counted, that is, the number of consecutive failures. When the number of consecutive failures is high (for example, the number of consecutive failures is greater than or equal to the preset number of times), it indicates that the first network may not be covered in a large range. And, in the technical solution shown in FIG. 5 or FIG. 6, the number of consecutive failures of the LTE search operation based on the position change distance may be counted, that is, the number of consecutive failures. When there are many consecutive failures (such as the number of consecutive failures is greater than or equal to the preset number), it indicates that the first network may not be covered in a large range. Therefore, in the subsequent operations, the following processing methods can be used:

When the number of consecutive failures of the search operation of the terminal to the first network is greater than or equal to a preset number of times, the terminal stops performing a search operation on the first network based on a cell change/location change distance, which is helpful. Reduce power consumption at the terminal and extend standby time of the terminal.

Fourth, the change of the cell / position change distance combined with other technical means In the above, a technical solution for implementing network search based on the combination of data service requirements and cell changes is described by using FIG. 3 and FIG. 4; FIG. 5 and FIG. 6 describe the combination of data service requirements and location change distances. , a technical solution to achieve network search.

The cell change situation or the position change distance is actually used to determine the moving distance of the terminal, so that the search for the first network is started when the moving distance is large, thereby increasing the search success rate and reducing the number of searches. , reduce terminal power consumption.

At the same time, based on the above-mentioned power saving purpose, if the search for the first network is stopped, it may affect the terminal's timely access to the LTE network (ie, the first network), and thus may be combined with other technical means to solve the drawback.

Embodiment 1: Timer

In the above technical solution, preferably, when the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to the preset number of times, the method further includes: starting a timer, and the terminal is in the timer After the timeout, the search operation of the first network is initiated. If the search operation of the first network fails after the timer expires, the timer is restarted.

In the above technical solution, preferably, the method further includes: when the terminal fails to perform a search operation on the first network after the timer expires, increasing a timing of the timer according to a preset manner.

In this technical solution, by increasing the timing of the timer, the frequency of the terminal performing the search operation on the first network can be further reduced, thereby helping to reduce the power consumption of the terminal, which is beneficial to the terminal to save power, especially for a wide range. When the area without LTE network coverage moves fast, you can Significantly reduce the number of searches. Of course, it is also possible to use a fixed timing duration, so that it is not necessary to adjust the timing time.

Specifically, FIG. 7A shows a flow diagram of performing a network search based on a cell change/location change distance and a timer, according to an embodiment of the present invention.

As shown in FIG. 7A, the flow of performing a network search based on a cell change/location change distance and a timer according to an embodiment of the present invention includes:

Step 702: The UE is disconnected from the LTE or has not been registered to the LTE network, and enters the LTE background search working state.

Step 704: The UE may perform a cell change-based LTE search registration process, and specifically refer to FIG. 3 or FIG. 4; or, the UE may perform an LTE search registration process based on the location change distance, as shown in FIG. 5 or FIG. Narration.

Step 706: Count the number of consecutive failures N when the UE performs the LTE search registration.

If the number of consecutive failures N is greater than or less than the preset number of times N1, the process proceeds to step 708, otherwise, the process returns to step 704.

Step 708, starting the timer, and determining the timing of the time is Tresearch. Specifically, the length of the Tresearch can be set as needed.

Step 710: Determine whether the timer expires. If it times out, go to step 712, otherwise continue to wait.

Step 712: Control the UE to perform an LTE search registration.

Since the length of the Tresearch is longer than the LTE search registration interval by default, it helps the UE to save power. Meanwhile, the timer-based LTE search registration can ensure the UE after the UE enters/returns to the coverage area of the LTE network. Connect to LTE in time to avoid user waiting time.

Step 714, determining whether the LTE search registration is successful. If successful, proceeding to step 716, otherwise proceeding to step 718.

In step 716, the UE exits the LTE background search working state and enters a normal working state. At step 718, the value of the timer's timing time Tresearch is incremented and the process returns to step 708. By increasing the value of Tresearch to reduce the number of LTE search registrations, it helps to avoid LTE network coverage over a large area, or when the user does not move at a large distance. Reduce UE power consumption. Of course, the timing duration of the timer may not be adjusted, but is set to a fixed timing duration.

Among them, for the value increase process of Tresearch, the following methods can be used:

(1) Set the threshold Threshold=n χ Tresearch, and correspond to the same Threshold, where n indicates the number of times LTE search registration is performed.

(2) After n LTE search registration, increase Threshold to the original m times (ratio: ^ mouth m=2 or other values) while still maintaining Thresholds χ Tresearch, ie

Tresearch also increased to m times the original.

(3) Until the Threshold increases to the preset maximum Threshold—max, the values of Threshold and Tresearch are stopped.

Of course, the above manner is only used as an example; those skilled in the art understand that it is obvious that other methods can also be used, for example, the timing of the timer is n X Tresearch, and n is the number of times the LTE search is registered.

As shown in Fig. 7B, based on the technical solution shown in Fig. 7A, the value of the number of consecutive failures N can be adjusted in step 718' (corresponding to step 718 shown in Fig. 7A). Specifically, the value of the number of consecutive failures N should be reduced (for example, by 1), so that when returning to step 706, the cell change/location change distance based LTE search registration process in step 704 is re-executed due to N < N1 Therefore, the "cell change/position change distance" and "timer" are combined with each other, which can reduce the UE's search frequency, reduce the UE's power consumption, and pass the "cell change/position change" through the "timer". Distance "to ensure the timeliness of UE re-access to LTE.

It should be noted:

In FIG. 7B, the meaning of "continuous failure number N" is the number of consecutive failures when the UE performs LTE search registration based on the cell change/location change distance; and when other counting methods are used, more can be expanded. Technical solutions.

For example, the number of failures of the LTE search registration based on the "cell change/position change distance" and the "timer" can be uniformly counted, that is, as long as the LTE search registration operation is performed and fails, the "continuous" The number of failures N" changes, so there is no need to distinguish the triggers of the LTE search registration operation, which helps to reduce the complexity of the algorithm. specifically, When the number of consecutive failures N corresponds to the number of failures at the time of LTE search registration by "cell change/position change distance" and "timer", step 718' in FIG. 7B can be divided into FIG. 7C. The following steps:

Step 718, A, when the LTE search registration behavior initiated based on the "timer" fails, the number of consecutive failures N is increased by one.

Step 718:, increase the timer time of the timer according to a preset manner, and reduce the number of consecutive failures by 2 (or a larger value), so that when returning to step 706, N < N1 is ensured, thereby triggering the change based on the cell change/position. LTE search registration process. Of course, the timing duration of the timer may not be adjusted, but is set to a fixed timing duration.

Example 2: Zone i or update

Figure 8A shows a flow diagram of performing a network search based on cell change/location change distance and region update, in accordance with one embodiment of the present invention.

As shown in FIG. 8A, the flow of performing a network search based on a cell change/location change distance and a region update according to an embodiment of the present invention includes:

Step 802: The UE is off-network from LTE or has not registered to the LTE network, and enters the LTE background search working state.

Step 804, the UE may perform a cell change-based LTE search registration process, and specifically refer to FIG. 3 or FIG. 4; or, the UE may perform an LTE search registration process based on the location change distance, as shown in FIG. 5 or FIG. Narration.

Step 806, the number N of consecutive failures when the UE performs the LTE search registration is counted.

If the number of consecutive failures N is greater than or less than the preset number of times N1, the process proceeds to step 808, otherwise, the process returns to step 804.

Step 808: Determine whether the UE initiates a request for RAU (Routing Area Updating, Routing Area i or Update) or LAU (Location Area Updating, Location Area, or Update). If yes, proceed to step 810, otherwise continue to wait.

Step 810, performing an LTE search registration.

Specifically, due to the initiation of the routing area update request or the location area update request, the location of the UE is inevitably changed, and the UE may return to the coverage area of the LTE network due to the change of the location area, and thus the LTE network is accordingly Search operations are not performed blindly, but It is more likely to successfully search for the first network, which helps users to successfully and quickly recover to the LTE network and improve the user experience.

Step 812: Determine whether the LTE search registration is successful. If successful, proceed to step 814, otherwise return to step 808.

Step 814: The UE exits the LTE background search working state and enters a normal working state. As shown in FIG. 8B, on the basis of that shown in FIG. 8A, the following steps may be further included: Step 816: When the LTE search registration behavior initiated based on the "area update RAU/LAU" fails, the number of consecutive failures is reduced by one. (or a larger value) and return to step 806, so that when returning to step 806, N < N1 is ensured, thereby triggering the LTE search registration process based on the cell change/location change distance.

It should be noted:

The "continuous failure number N" in Fig. 8B only corresponds to the number of failures when LTE search registration is realized by "cell change/position change distance"; and when other counting methods are used, more techniques can be expanded. Program.

For example, the number of failures of LTE search registration based on "cell change/location change distance" and "area update AU/LAU" can be uniformly counted, that is, as long as the LTE search registration operation is performed and fails, This makes the "continuous failure number N" change, so that it is not necessary to distinguish the triggering factors of the LTE search registration operation, which helps to reduce the complexity of the algorithm. Specifically, when the number of consecutive failures N corresponds to the number of failures at the time of LTE search registration by "cell change/position change distance" and "area update RAU/LAU", step 816 in FIG. 8B can be divided. The following steps in Figure 8C:

In step 816A, when the LTE search registration behavior initiated based on the "area update RAU/LAU" fails, the number of consecutive failures N is increased by one.

In step 816B, the number of consecutive failures is reduced by 2 (or a larger value) such that when returning to step 806, N < N1 is ensured, thereby triggering the LTE search registration process based on the cell change/location change distance.

5. Combination with auxiliary parameters

9 is a flow diagram showing the implementation of a network search in conjunction with an auxiliary parameter in accordance with one embodiment of the present invention. As shown in FIG. 9, the process of implementing network search by combining auxiliary parameters according to an embodiment of the present invention includes:

Step 902: Detecting a data service requirement existing in the UE.

Step 904: Detect whether the change amount of the auxiliary parameter of the UE or its corresponding serving cell and/or the neighboring cell satisfies the preset change amount. If yes, go to step 906, otherwise go back to step 902.

Specifically, the auxiliary parameter may include at least one of the following or a combination thereof: a signal strength of a serving cell and/or a neighboring cell corresponding to the UE, a transmit power strength of the UE, and/or a transmit signal strength, a UE corresponding transmit delay, and/or Or the reception delay, the bit error rate and/or the block error rate corresponding to the UE, the signal to noise ratio corresponding to the UE, and/or the signal to interference ratio.

Further, when the change amount of the one or more auxiliary parameters is greater than or equal to the corresponding preset change amount, the UE may further determine that the UE may move with a larger distance, thereby initiating a search and registration operation on the LTE network. In order to improve the success rate of the LTE search registration, the blind LTE search registration operation is avoided, resulting in waste of power consumption of the UE.

Wherein, when the UE has data service requirements, the auxiliary parameters may also be combined with the cell change/location change distance. Specifically, for example, when the cell ID is unchanged or the position change distance is less than the preset distance, the amount of change of the auxiliary parameter is determined; or, when the change amount of the auxiliary parameter is less than the corresponding preset change amount, Next, the change of the cell ID or the size of the position change distance is judged.

Step 906, performing an LTE search registration.

Step 908: Determine whether the LTE search registration is successful. If successful, proceed to step 910, otherwise return to step 902.

Step 910: The UE exits the LTE background search working state and enters a normal working state. Figure 10 shows a schematic block diagram of a network search device in accordance with one embodiment of the present invention. As shown in FIG. 10, the network search apparatus 1000 according to an embodiment of the present invention includes: a requirement detecting unit 1002, configured to detect when the terminal is disconnected from the first network or not registered to the first network. Whether there is a data service requirement in the terminal; the network search unit 1004 is configured to perform a search operation on the first network if it is detected that the data service requirement exists. In the technical solution, determining whether to perform a search operation on the first network based on the existence of the data service requirement in the terminal, so that each search is initiated based on the requirement, which not only meets the user's use requirements and usage psychology. Moreover, it is possible to avoid blind power search and increase the power consumption of the terminal, which helps to extend the standby time of the terminal.

In the above technical solution, the method further includes: a cell change determining unit 1006, configured to: when detecting that the data service requirement exists, if the terminal resides in the second network, determine that the terminal is Whether the corresponding serving cell and/or the neighboring cell in the second network changes; wherein, in the case that the serving cell and/or the neighboring cell corresponding to the terminal changes, the network searching unit 1004 performs the The search operation of the first network.

In this technical solution, when camping on the second network, since the terminal is necessarily connected to the nearby cell, the direct change of the corresponding serving cell and/or neighboring cell in the second network can be directly Reflecting the change of the location of the terminal under the second network, that is, the change of the serving cell and/or the neighboring cell, which is necessarily caused by the change of the location of the terminal, and the terminal It is highly probable that a large distance changes in position.

In the foregoing technical solution, the cell change determining unit 1006 is specifically configured to: when the identity of the serving cell and/or the neighboring cell corresponding to the terminal in the second network changes, the terminal is from the The second network is off-network, the terminal performs cell selection or cell reselection operation in the second network, the terminal performs a cell handover operation on the second network, or the terminal performs cell update in the second network. In the case of operation, it is determined that the serving cell and/or the neighboring cell corresponding to the terminal change.

In the above technical solution, the network search unit 1004 is further configured to: stop performing execution based on the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times A search operation for the first network of changes in the serving cell and/or the neighboring cell.

In the above technical solution, the method further includes: a location information acquiring unit 1008, configured to acquire real-time location information of the terminal; and a location change determining unit 1010, configured to determine, according to the real-time location information, a location of the terminal Whether the change distance is greater than or equal to the preset change amount; wherein, the network search unit 1004 performs a search operation on the first network if the determination result is satisfied and the presence of the data service demand is detected.

Therefore, when the position change generated by the terminal is greater than or equal to a predetermined value, the terminal is likely to enter / Re-entering the coverage area of the first network, at this time, by performing a search operation on the first network, the success rate of the search network is increased, and the power consumption of the terminal is prevented from being blindly searched, which helps to extend the standby of the terminal. time.

In the foregoing technical solution, the location information acquiring unit 1008 is specifically configured to: acquire the real-time location information by using a satellite positioning module in the terminal; and/or when the terminal resides in the second network. The real-time location information of the terminal is received from the network side.

In the above technical solution, the network search unit 1004 is further configured to: stop performing execution based on the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times A search operation of the first network for the location change distance.

In the above technical solution, preferably, the method further includes: a timer management unit 1012, configured to start a timer if the number of consecutive failures of the search operation of the first network by the terminal is greater than or equal to a preset number of times And initiating, by the network search unit, a search operation on the first network after the timer expires.

In the technical solution, the timer-based network search mode is adopted, that is, the terminal performs a search operation on the first network every time the timer expires, and if successful, accesses the first network, otherwise the timer is reset. After waiting for the timer to time out again, the search operation on the first network is re-executed. Since the terminal stops performing the network-based operation based on the change of the cell (the serving cell and/or the neighboring cell) when the number of consecutive failures is large, the timer-based network search operation enables the terminal power consumption to be reduced while To some extent, the timeliness of searching for the first network is ensured, and the user is prevented from entering/returning to the coverage area of the first network but cannot register for a long time.

In the above technical solution, preferably, the method further includes: a network search frequency control unit

1014. When the search operation for the first network initiated after the timer expires, the number of consecutive failures is subtracted from a preset value to be re-executed by the network search unit 1004. A change in the serving cell and/or the neighboring cell or a search operation on the first network based on the location change distance.

In the above technical solution, the timer management unit 1012 is further configured to: when the terminal fails to perform a search operation on the first network after the timer expires, restart the timing immediately. Or increasing the timing of the timer and restarting the timer according to a preset manner.

In the foregoing technical solution, the network search unit 1004 is further configured to: if the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times, if the terminal is When a routing area update request or a location area update request is initiated, a search operation for the first network is initiated.

In this technical solution, due to the initiation of the routing area update request or the location area update request, the location of the terminal is inevitably changed, and the terminal is likely to be heavy due to the change of the location area. Newly returned to the coverage area of the first network, so that the search operation of the first network is not performed blindly, but has a greater possibility of successfully searching for the first network, which helps the user to successfully and quickly recover to the first network. , enhance the user experience.

1014. When the search operation for the first network based on the routing area update request or the location area update request is initiated, the consecutive failure times are subtracted from a preset value by the network search unit 1004. A search operation for the first network based on a change in the serving cell and/or a neighboring cell or based on the location change distance is re-executed.

In any one of the foregoing technical solutions, the method further includes: a combination condition determining unit 1016, configured to determine whether the terminal meets the following combination condition: in a case where the terminal has a data service requirement, the terminal is in the The change value of the one or more selected parameters in the second network is greater than or equal to the corresponding preset change value; wherein, the network search unit 1004 initiates the first step if the terminal meets the corresponding condition a search operation of a network; and the selected parameter comprises at least one of the following or a combination thereof: a signal strength of the serving cell and/or the neighboring cell corresponding to the terminal, a transmit power strength of the terminal, and/or a transmit signal strength And a transmission delay and/or a reception delay corresponding to the terminal, a bit error rate and/or a block error rate corresponding to the terminal, a signal to noise ratio and/or a signal to interference ratio corresponding to the terminal.

In this technical solution, when the position of the terminal changes by a large distance, the change value of the above various selected parameters is large (for example, greater than or equal to the corresponding preset change value), and the terminal is likely to enter/ Returns the coverage area of the first network. Therefore, by determining the change value of the selected parameter, the position change of the terminal can be reflected, and it is determined whether the terminal is allowed to perform the search operation on the first network, and the blind search can be avoided to a certain extent. In order to reduce the power consumption of the terminal, it is beneficial to save power in the terminal. Figure 11 shows a schematic block diagram of a terminal in accordance with one embodiment of the present invention.

As shown in FIG. 11, a terminal 1100 according to an embodiment of the present invention includes a network search device 1000 as shown in FIG.

The technical solution of the present invention is described in detail above with reference to the accompanying drawings. The present invention provides a network search method, a network search device and a terminal, which can control the network search frequency of the terminal according to the position change of the terminal. And/or the number of times, to avoid frequent blind search, which leads to waste of power consumption of the terminal, and can help the terminal access a specific network as soon as possible, which helps to improve the user experience.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowcharts and/or block diagrams, and combinations of flows and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. Instructions are provided for implementation The steps of a function specified in a block or blocks of a flow or a flow and/or a block diagram of a flow chart.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Claim

A network search method, comprising:

The terminal is off-network from the first network or has not been registered to the first network;

The terminal performs a search operation on the first network when it is detected that there is a data service requirement.

2. The network search method according to claim 1, wherein, in the case that the data service demand is detected, the method further includes:

When the terminal camps on the second network, if the terminal changes in the corresponding serving cell and/or the neighboring cell in the second network, the terminal performs a search operation on the first network.

The network search method according to claim 2, wherein determining that the serving cell and/or the neighboring cell corresponding to the terminal change comprises:

The identifier of the serving cell and/or the neighboring cell corresponding to the second network changes, the terminal is disconnected from the second network, and the terminal performs cell selection or cell weight in the second network. Alternatively, the terminal performs a cell handover operation on the second network or the terminal performs a cell update operation on the second network.

The network search method according to claim 2, further comprising: when the number of consecutive failures of the search operation of the terminal to the first network is greater than or equal to a preset number of times, the terminal stops executing A search operation for the first network based on a change in the serving cell and/or neighboring cell.

The network search method according to claim 1, wherein, in the case that the data service demand is detected, the method further includes:

Obtaining real-time location information of the terminal;

The terminal performs a search operation on the first network when it is determined that the location change distance of the terminal is greater than or equal to a preset change amount according to the real-time location information.

The network search method according to claim 5, wherein the acquiring the real-time location information of the terminal specifically includes:

Acquiring the real-time location information by using a satellite positioning module in the terminal; and/or receiving a real-time location information of the terminal from the network side when the terminal resides in the second network Interest.

The network search method according to claim 5, further comprising: when the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times, the terminal stops executing A search operation for the first network based on the location change distance.

The network search method according to claim 4 or 7, wherein, when the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times, the method further includes:

A timer is started, and the terminal initiates a search operation on the first network after the timer expires.

The network search method according to claim 8, further comprising: if the terminal fails to perform a search operation on the first network after the timer expires, the continuous failure The preset number is subtracted from the number of times to re-execute the search operation for the first network based on the change of the serving cell and/or the neighboring cell or based on the location change distance by the terminal.

The network search method according to claim 8, further comprising: when the terminal fails to perform a search operation on the first network after the timer expires, restarting the timing immediately Or increasing the timing of the timer and restarting the timer according to a preset manner.

And if the terminal initiates a routing area update request or a location area update request, initiate a search operation on the first network.

The network search method according to claim 11, further comprising: if the search operation of the first network based on the routing area update request or the location area update request initiated by the terminal fails, The number of consecutive failures is subtracted from a preset value to re-execute a search operation for the first network based on a change of the serving cell and/or a neighboring cell or based on the location change distance by the terminal.

The network search method according to any one of claims 1 to 7, further comprising:

If the terminal has a data service requirement, if the terminal determines whether the change value of the one or more selected parameters in the second network is greater than or equal to a corresponding preset change value, allowing the terminal Performing a search operation on the first network;

Wherein the selected parameter comprises at least one of the following or a combination thereof:

The signal strength of the serving cell and/or the neighboring cell corresponding to the terminal, the transmit power strength and/or the transmit signal strength of the terminal, the transmit delay and/or the receive delay corresponding to the terminal, and the corresponding terminal Bit error rate and/or block error rate, signal to noise ratio and/or signal to interference ratio corresponding to the terminal.

A network search device, comprising:

a requirement detecting unit, configured to detect, in the terminal, whether there is a data service requirement in the terminal, if the terminal is off-network from the first network or not registered to the first network;

And a network search unit, configured to perform a search operation on the first network if it is detected that the data service requirement exists.

The network search device according to claim 14, further comprising: a cell change determining unit, configured to: if the data service demand is detected, if the terminal resides in the second network And determining, by the terminal, whether the corresponding serving cell and/or the neighboring cell in the second network changes;

The network search unit performs a search operation on the first network if a serving cell and/or a neighboring cell corresponding to the terminal changes.

The network search device according to claim 15, wherein the cell change determination unit is specifically configured to:

When the identity of the serving cell and/or the neighboring cell corresponding to the second network changes, the terminal is disconnected from the second network, and the terminal performs cell selection or cell in the second network. a reselection operation, where the terminal performs a cell handover operation on the second network, or the terminal performs a cell update operation on the second network, determining that a serving cell and/or a neighboring cell corresponding to the terminal changes .

17. The network search device according to claim 15, wherein the network The search unit is also used to:

If the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times, stopping execution of the change based on the serving cell and/or the neighboring cell to the first network is stopped. Search operation.

The network search device according to claim 14, further comprising: a location information acquiring unit, configured to acquire real-time location information of the terminal;

a position change judging unit, configured to determine, according to the real-time location information, whether the location change distance of the terminal satisfies a preset change amount or more;

The network search unit performs a search operation on the first network if the determination result is satisfied and the presence of the data service requirement is detected.

The network search device according to claim 18, wherein the location information acquiring unit is specifically configured to:

Acquiring the real-time location information by using a satellite positioning module in the terminal; and/or receiving real-time location information of the terminal from the network side when the terminal resides in the second network.

The network search device according to claim 18, wherein the network search unit is further configured to:

In a case where the number of consecutive failures of the search operation of the terminal to the first network is greater than or equal to the preset number of times, the search operation for the first network based on the position change distance is stopped.

The network search device according to claim 17 or 20, further comprising:

a timer management unit, configured to start a timer to be used by the network search unit in the case that the number of consecutive failures of the search operation of the first network by the terminal is greater than or equal to a preset number of times A search operation for the first network is initiated after a timeout.

The network search device according to claim 21, further comprising: a network search frequency control unit, configured to: when the search operation for the first network initiated after the timer expires, Subtracting the number of consecutive failures by a preset value to re-execute the change based on the serving cell and/or the neighboring cell by the network search unit or based on the A search operation of the first network for the location change distance.

The network search device according to claim 21, wherein the timer management unit is further configured to:

When the terminal fails to perform the search operation on the first network after the timer expires, the timer is restarted immediately, or the timing of the timer is increased according to a preset manner, and the timing is restarted. Device.

The network search device according to claim 17 or 20, wherein the network search unit is further configured to:

If the number of consecutive failures of the search operation of the first network to the first network is greater than or equal to a preset number of times, if the terminal initiates a routing area update request or a location area update request, the first network is initiated. Search operation.

The network search device according to claim 24, further comprising: a network search frequency control unit, configured to initiate the routing area update request or the location area update request to the first network When the search operation fails, the consecutive number of failures is subtracted from a preset value to be re-executed by the network search unit based on the change of the serving cell and/or the neighboring cell or based on the location change distance. The search operation of the first network.

The network search device according to any one of claims 14 to 20, further comprising:

a combination condition determining unit, configured to determine whether the terminal meets the following combination condition: in a case where the terminal has a data service requirement, the terminal changes in one or more selected parameters under the second network The value is greater than or equal to the corresponding preset change value;

The network search unit initiates a search operation on the first network if the terminal satisfies a corresponding condition;

The selected parameter includes at least one of the following or a combination thereof:

A terminal, comprising: the network search device according to any one of claims 14 to 26.