CN112738717A - Method for improving network searching efficiency of 5G SA and NSA terminals - Google Patents
Method for improving network searching efficiency of 5G SA and NSA terminals Download PDFInfo
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- CN112738717A CN112738717A CN202110084711.1A CN202110084711A CN112738717A CN 112738717 A CN112738717 A CN 112738717A CN 202110084711 A CN202110084711 A CN 202110084711A CN 112738717 A CN112738717 A CN 112738717A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/183—Processing at user equipment or user record carrier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/20—Transfer of user or subscriber data
- H04W8/205—Transfer to or from user equipment or user record carrier
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a method for improving network searching efficiency of terminals of 5G SA and NSA, which is characterized in that a networking mode of each base station cell is recorded and stored by a 5G core network, wherein the networking mode of each base station cell is indexed and identified by a physical cell ID PCI and geographical position information of a cell to which the physical cell ID PCI belongs, and the networking mode is synchronously written into a terminal or an SIM card by a network. When a terminal searches a network, a cell preference list which is in accordance with the current geographic position range is selected according to the networking mode and strategy of the terminal, and the frequency point scanning is carried out to monitor a primary synchronization signal PSS and a secondary synchronization signal SSS respectively to select cells in the cell preference list for carrying out downlink synchronization and random access processes. The search process of the 5G SA and NSA networks can be simplified, the network searching speed of the SA and the NSA networks can be greatly increased, the network searching power consumption of the terminal is reduced, and the user experience is increased.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a method for improving network searching efficiency of terminals of 5G SA and NSA.
Background
Currently, 3GPP defines two networking modes of 5G, namely an independent networking (SA) and a non-independent Networking (NSA). According to different requirements of operators, the two networking modes may cover different areas, and may also cover the same area. And for the 5G terminal, the situation that only SA is supported, only NSA is supported, or both SA and NSA are supported exists, so that the problem that a suitable network is quickly searched for the 5G terminal exists, in the existing scheme, UE (user equipment) can carry out full-band scanning on the frequency band supported by the UE, and downlink synchronous receiving system information can be carried out when the corresponding frequency point is searched, so that the networking mode of the base station, namely SA or NSA, is obtained, if the networking capability of the UE is not matched, the UE starts to continuously search the next frequency point, and the steps are repeated in sequence until a suitable cell residence registration conforming to the networking strategy of the UE is found.
Whether the terminal UE supports the SA or the NSA can be reported to the network when the terminal capability is reported, and whether the base station supports the NSA or the SA is broadcasted and notified to the UE in a system message transmitted by the base station. Then, the UE capability reporting is performed only when the terminal performs random access, and the system message is acquired only after the UE acquires downlink synchronization. In the prior art, for the UE, it is necessary to scan the frequency points supported by the terminal one by one, perform downlink synchronization to obtain a system message, and then determine the networking mode supported by the cell, and only after the downlink synchronization is completed, the system message can be received, and then the networking mode supported by the cell can be determined, and it can be known whether the cell is suitable for the terminal to access, and the terminal can determine whether the cell is suitable for registering in the cell, and if not, the UE will try to do so. Finally, the UE consumes time for searching the network, the efficiency is low, and the electric energy of the terminal is also consumed.
In summary, there is a need for a method that can solve the above technical problems, simplify the search process of 5G SA and NSA networks, determine whether a cell is suitable for terminal access by monitoring PSS or monitoring PSS and SSS for an unsuitable cell, and avoid monitoring and scanning for a cell with a terminal networking method and a policy that are not matched, thereby overcoming the above problems.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a method for improving the network searching efficiency of terminals of 5G SA and NSA, and aims to solve the problems that the network searching in the prior art is time-consuming, low in efficiency and terminal electric energy is consumed.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for improving network searching efficiency of terminals of 5G SA and NSA is characterized by comprising the following steps:
S10.5G the core network stores, records and maintains a networking mode relation Table1 of each base station cell, wherein the relation Table1 records the geographical position, physical cell PCI and networking type corresponding to the base station cell;
s20, writing the relation Table1 into a 5G terminal or an SIM card;
s30, inquiring whether the terminal starts to search the network to perform downlink synchronization, if not, continuing inquiring, and if yes, turning to the step S40;
s40, the terminal acquires current geographic position information through a positioning technology;
s50, the terminal retrieves a matched physical cell ID list from the relation Table1 according to the current geographical location information;
s60, the terminal acquires networking modes and networking strategies supported by the terminal, and retrieves a cell preference list Table2 in accordance with the current geographic position range from the relation Table 1;
s70, the terminal scans frequency points, receives a primary synchronization signal PSS on the corresponding frequency point, monitors whether the ID corresponding to the PSS exists in the record of the corresponding priority in the preferred list Table2, if not, the step S80 is carried out, and if yes, the step S90 is carried out;
s80, the terminal stops monitoring the auxiliary synchronization signal SSS on the frequency point and directly returns to the step S70 to scan the next frequency point;
s90, the terminal continuously monitors an auxiliary synchronization signal SSS, and monitors whether the ID corresponding to the SSS is consistent with the ID of the SSS which is recorded by the ID of the PSS in the preferred list Table2, if not, the step S100 is executed, and if so, the step S110 is executed;
s100, the terminal stops downlink synchronization and directly returns to the step S70 to scan the next frequency point;
and S110, completing downlink synchronization and random access on the PCI physical cell.
Preferably, in the step S20, the terminal obtains the relationship Table1 after the terminal successfully registers for the first time, the relationship Table1 is uniformly maintained and updated by the network, and the relationship Table is updated and written into the terminal or the SIM card from the network each time the terminal is powered off or unregistered.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a method for improving network searching efficiency of terminals of 5G SA and NSA, which is characterized in that a networking mode of each base station cell is recorded and stored by a 5G core network, wherein the networking mode of each base station cell is indexed and identified by a physical cell ID PCI and geographical position information of a cell to which the physical cell ID PCI belongs, and the networking mode is synchronously written into a terminal or an SIM card by a network. When a terminal searches a network, a cell preference list which is in accordance with the current geographic position range is selected according to the networking mode and strategy of the terminal, and the frequency point scanning is carried out to monitor a primary synchronization signal PSS and a secondary synchronization signal SSS respectively to select cells in the cell preference list for carrying out downlink synchronization and random access processes. The search process of the 5G SA and NSA networks can be simplified, the network searching speed of the SA and the NSA networks can be greatly increased, the network searching power consumption of the terminal is reduced, and the user experience is increased.
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FIG. 1 is a block flow diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the method for improving network searching efficiency of terminals of 5G SA and NSA provided by the present invention includes the following steps:
S10.5G the core network stores, records and maintains a networking mode relation Table1 of each base station cell, wherein the relation Table1 records the geographical position, physical cell PCI and networking type corresponding to the base station cell;
s20, writing the relation Table1 into a 5G terminal or an SIM card;
s30, inquiring whether the terminal starts to search the network to perform downlink synchronization, if not, continuing inquiring, and if yes, turning to the step S40;
s40, the terminal acquires current geographic position information through a positioning technology;
s50, the terminal retrieves a matched physical cell ID list from the relation Table1 according to the current geographical location information;
s60, the terminal acquires networking modes and networking strategies supported by the terminal, and retrieves a cell preference list Table2 in accordance with the current geographic position range from the relation Table 1;
s70, the terminal scans frequency points, receives a primary synchronization signal PSS on the corresponding frequency point, monitors whether the ID corresponding to the PSS exists in the record of the corresponding priority in the preferred list Table2, if not, the step S80 is carried out, and if yes, the step S90 is carried out;
s80, the terminal stops monitoring the auxiliary synchronization signal SSS on the frequency point and directly returns to the step S70 to scan the next frequency point;
s90, the terminal continuously monitors an auxiliary synchronization signal SSS, and monitors whether the ID corresponding to the SSS is consistent with the ID of the SSS which is recorded by the ID of the PSS in the preferred list Table2, if not, the step S100 is executed, and if so, the step S110 is executed;
s100, the terminal stops downlink synchronization and directly returns to the step S70 to scan the next frequency point;
and S110, completing downlink synchronization and random access on the PCI physical cell.
Specifically, the 5G core network side records and maintains a networking mode relation Table1 of each base station cell, where the geographic location, the physical cell PCI (PSS and SSS), and the networking type (SA or NSA or SA & NSA) corresponding to the base station cell are recorded. The specific relationship Table1 is shown as follows:
the PCI is calculated and obtained through PSS and SSS, a primary synchronization signal PSS is monitored firstly in the downlink synchronization process, an auxiliary synchronization signal SSS is monitored later, and the PCI is finally calculated and obtained. The relation Table is written into a 5G terminal or an SIM card by a network, when the terminal searches the network, a matched physical cell ID list is firstly searched according to the current geographic position, and then a cell preference list Table2 which is in line with the current geographic position range is searched from the relation Table according to the terminal networking capability and the priority strategy of the terminal. A particularly preferred list, Table2, is shown in the following Table:
the terminal first retrieves a list of cells meeting the conditions from the Table1 according to the current geographical location of the terminal itself, and then selects a list of cells meeting the conditions according to the networking capability and policy of the terminal itself, for example, Table2 lists four UE networking capabilities and policies and priorities of corresponding cell lists, and describes the case where the UE is located at location a: the UE only supports the SA networking mode, and only PCI cells of PSS and SSS pairs of (4,32) and (2,21) can be registered; the UE only supports the NSA networking mode, and only the PCI cells of the PSS and SSS pairs of (1,33) and (2,45) can be registered; the UE supports an SA & NSA networking mode, when the SA is prior, the UE registers the PCI cells of the PSS and SSS pairs of (4,32) and (2,21) preferentially at the time, and then selects the PCI cells of the PSS and SSS pairs of (1,33) and (2, 45); and 4, the UE supports an SA & NSA networking mode, when NSA takes precedence, the UE registers the PCI cells of the PSS and SSS pairs of (1,33) and (2,45) preferentially, and then selects the PCI cells of the PSS and SSS pairs of (4,32) and (2, 21). The above lists 4 preferred policies for networking, but actually, a networking policy of a terminal at a certain moment is predetermined, that is, actually, only one networking policy in Table2 is available. In addition, the numbers 1 and 2 in the above table corresponding to the networking modes refer to the priority of network selection, 1 represents the first priority, and 2 represents the second priority.
In the downlink synchronization process, the UE firstly monitors a primary synchronization signal PSS, and then monitors a secondary synchronization signal SSS to perform time and frequency synchronization, wherein a physical cell PCI is also calculated after the PSS and SSS are monitored. In the scheme, the UE scans each frequency point to monitor the PSS and the SSS respectively, and if the ID corresponding to the PSS is not matched with the PSS in the Table2 Table, the SSS does not need to be monitored again, and the next frequency point is monitored directly.
It should be noted that, in the network searching process of the UE, before the frequency band scanning, the current geographical location information needs to be acquired through a positioning technology, a matched physical cell ID list is retrieved from a Table1 according to the current geographical location, and then a cell preference list Table2 meeting the current geographical location range is retrieved from the relationship Table according to a networking mode and a networking policy supported by the UE.
Preferably, in the step S20, the terminal obtains the relationship Table1 after the terminal successfully registers for the first time, the relationship Table1 is uniformly maintained and updated by the network, and the relationship Table is updated and written into the terminal or the SIM card from the network each time the terminal is powered off or unregistered. And the UE selects to receive the primary synchronization signal PSS on the corresponding frequency point, monitors whether the ID corresponding to the PSS exists in the record corresponding to the priority in Table2, and if so, continuously monitors the SSS secondary synchronization signal, and if the ID corresponding to the secondary synchronization signal SSS is consistent with the SSS ID in the record corresponding to the PSS ID in Table2, the UE needs to complete downlink synchronization and random access on the PCI physical cell. If the ID corresponding to the PSS and the corresponding priority record in Table2 are not consistent, the SSS signal is not required to be continuously monitored, the scanning of the next frequency point is directly carried out, and the SSS monitoring corresponding ID and the record are not matched in the same way, the downlink synchronization is not required to be carried out, and the scanning of the next frequency point is directly carried out. The corresponding priority recording strategy in the above description means that first priority recording is monitored, and if the first priority recording is not matched, second priority recording is selected.
Specifically, the 5G core network stores and maintains a Table1 of a relationship Table of a cell networking mode of each base station, and the Table1 Table is synchronously written into the 5G terminal or the SIM card by the network, the terminal can obtain the relationship Table after the first registration is successful, the relationship Table is uniformly maintained and updated by the network, and the update is performed from the network and written into the terminal or the SIM card when the terminal is powered off or unregistered each time.
In summary, the working principle of the invention is as follows:
the invention provides a method for improving network searching efficiency of terminals of 5G SA and NSA, which is characterized in that a networking mode of each base station cell is recorded and stored by a 5G core network, wherein the networking mode of each base station cell is indexed and identified by a physical cell ID PCI and geographical position information of a cell to which the physical cell ID PCI belongs, and the networking mode is synchronously written into a terminal or an SIM card by a network. When a terminal searches a network, a cell preference list which is in accordance with the current geographic position range is selected according to the networking mode and strategy of the terminal, and the frequency point scanning is carried out to monitor a primary synchronization signal PSS and a secondary synchronization signal SSS respectively to select cells in the cell preference list for carrying out downlink synchronization and random access processes. The search process of the 5G SA and NSA networks can be simplified, the network searching speed of the SA and the NSA networks can be greatly increased, the network searching power consumption of the terminal is reduced, and the user experience is increased.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (2)
1. A method for improving network searching efficiency of terminals of 5G SA and NSA is characterized by comprising the following steps:
S10.5G the core network stores, records and maintains a networking mode relation Table1 of each base station cell, wherein the relation Table1 records the geographical position, physical cell PCI and networking type corresponding to the base station cell;
s20, writing the relation Table1 into a 5G terminal or an SIM card;
s30, inquiring whether the terminal starts to search the network to perform downlink synchronization, if not, continuing inquiring, and if yes, turning to the step S40;
s40, the terminal acquires current geographic position information through a positioning technology;
s50, the terminal retrieves a matched physical cell ID list from the relation Table1 according to the current geographical location information;
s60, the terminal acquires networking modes and networking strategies supported by the terminal, and retrieves a cell preference list Table2 in accordance with the current geographic position range from the relation Table 1;
s70, the terminal scans frequency points, receives a primary synchronization signal PSS on the corresponding frequency point, monitors whether the ID corresponding to the PSS exists in the record of the corresponding priority in the preferred list Table2, if not, the step S80 is carried out, and if yes, the step S90 is carried out;
s80, the terminal stops monitoring the auxiliary synchronization signal SSS on the frequency point and directly returns to the step S70 to scan the next frequency point;
s90, the terminal continuously monitors an auxiliary synchronization signal SSS, and monitors whether the ID corresponding to the SSS is consistent with the ID of the SSS which is recorded by the ID of the PSS in the preferred list Table2, if not, the step S100 is executed, and if so, the step S110 is executed;
s100, the terminal stops downlink synchronization and directly returns to the step S70 to scan the next frequency point;
and S110, completing downlink synchronization and random access on the PCI physical cell.
2. The method according to claim 1, wherein in step S20, the terminal obtains the relationship Table1 after the terminal successfully registers for the first time, the relationship Table1 is maintained and updated by the network, and the terminal updates from the network and writes into the terminal or the SIM card each time the terminal is powered off or unregistered.
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Cited By (1)
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