CN109451560B - Method for optimizing cell search interval based on terminal moving speed - Google Patents
Method for optimizing cell search interval based on terminal moving speed Download PDFInfo
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- CN109451560B CN109451560B CN201910014294.6A CN201910014294A CN109451560B CN 109451560 B CN109451560 B CN 109451560B CN 201910014294 A CN201910014294 A CN 201910014294A CN 109451560 B CN109451560 B CN 109451560B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
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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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a cell search interval optimization method based on terminal moving speed, which is applied to service recovery of a mobile phone or an Internet of things terminal in a limited state, wherein the mobile phone or the Internet of things terminal carries out connection search in a 3GPP standard protocol, and the method comprises the following steps: s1, on an access layer, the mobile phone or the terminal of the Internet of things resides in any cell meeting the residence condition, and the moving speed of the mobile phone or the terminal of the Internet of things is calculated according to a speed estimation algorithm; s2, the access layer reports the moving speed to a non-access layer through an interlayer message; s3, the non-access stratum receives the moving speed, matches the moving speed with a corresponding timer and updates the timer at the same time; the invention can adjust the search time interval of the cell in the non-access stratum according to the moving speed of the mobile phone or the terminal of the internet of things, and can improve the endurance time of the mobile phone or the terminal of the internet of things while recovering the time required by normal service of the mobile phone or the terminal of the internet of things.
Description
Technical Field
The invention belongs to the field of mobile communication, is mainly applied to calculation of the moving speed of a mobile phone or an Internet of things terminal in a limited service state and optimization of a search interval, and particularly relates to a cell search interval optimization method based on the moving speed of the terminal.
Background
After the mobile phone or the internet of things terminal is started, cell search is carried out for the first time, and the mobile phone or the internet of things terminal resides in a proper cell to obtain service. When a cell which can be normally served is not searched, a limited service state is entered. In the limited service state, the mobile phone or the terminal of the internet of things can reside in any cell meeting the residence condition, and the cell search of normal service is not continued so as to reduce the power consumption of the mobile phone or the terminal of the internet of things. The non-access stratum typically starts a timer at this time and starts the search for a normal serving cell again when the timer expires. It is how long this non-access stratum timer is, and no explicit value is given by the 3GPP standard protocol.
Generally, when a timer is started in a non-access stratum and a mobile phone or a network terminal is used for realizing access, in the prior art, 2 values are generally used for the timer, one value is a fixed value, and the other value is a stepped value. Fixed values, or stepwise unidirectional increases or decreases of values are not very scientific and have disadvantages in practical use. The fixed value has the disadvantage that the time to restore service and the power consumption are fixed. The disadvantage of the step value is that service cannot be restored quickly when the speed of movement increases.
Disclosure of Invention
Aiming at the problems that in the prior art, when a non-access layer is started by a timer, the time and power consumption for restoring signal access of a mobile phone or an internet of things terminal are fixed, and the moving speed is increased but the restoring speed cannot be accelerated, the invention provides a cell search interval optimization method based on the moving speed of the terminal; the specific technical scheme is as follows:
a cell search interval optimization method based on terminal moving speed is applied to service recovery of a mobile phone or an Internet of things terminal in a limited state, and the mobile phone or the Internet of things terminal carries out connection search in a 3GPP standard protocol, and the method comprises the following steps:
s1, on an access layer, the mobile phone or the terminal of the Internet of things resides in any cell meeting the residence condition, and the moving speed of the mobile phone or the terminal of the Internet of things is calculated according to a speed estimation algorithm;
s2, the access layer reports the moving speed to a non-access layer through an interlayer message;
and S3, the non-access stratum receives the moving speed, matches the moving speed with a corresponding timer and updates the timer.
Further, in step S3, the updating the timer includes determining whether the timer is running: if the timer is not running, the non-access stratum updates the timer according to the moving speed; if the timer is running, calculating a remaining value of the timer, comparing the remaining value with a value to be updated corresponding to the moving speed, if the remaining value is larger than the value to be updated corresponding to the moving speed, updating the timer and restarting the timer, otherwise, not updating the timer.
Further, the method further comprises: and if the timer is overtime, the non-access layer sends re-search information to the access layer, and the access layer responds to the re-search information to re-search the cells meeting the residence conditions and resides.
Further, the moving speed includes three values of a low speed, a medium speed and a high speed, and three timers, namely a low speed timer, a medium speed timer and a high speed timer, are arranged corresponding to the moving speed.
Compared with the prior art, the method for optimizing the cell search interval based on the terminal moving speed has the beneficial effects that: according to the invention, the mobile speed of the mobile phone or the Internet of things terminal is calculated on the access layer according to a speed estimation algorithm specified by a 3GPP standard protocol, the mobile speed is set to be low speed, medium speed and high speed, and a low speed timer, a medium speed timer and a high speed timer corresponding to the low speed, the medium speed and the high speed are correspondingly set in the non-access layer, so that the mobile phone or the Internet of things terminal can be updated by using different timers according to different mobile speeds, the recovery of service is realized, on one hand, the time for recovering the normal service of the mobile phone or the Internet of things terminal can be effectively shortened, and on the other hand, the endurance time of the mobile phone or the Internet of things terminal.
Drawings
Fig. 1 is a flowchart illustrating a method for optimizing a cell search interval based on a terminal moving speed according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Referring to fig. 1, in an embodiment of the present invention, a method for optimizing a cell search interval based on a terminal moving speed is provided, and is applied to service recovery of a mobile phone or an internet of things terminal in a limited state, specifically, the mobile phone or the internet of things terminal performs connection search in a 3GPP standard protocol to recover a mobile phone or internet of things terminal service, and specifically includes the following steps:
s1, at the access layer, the mobile phone or the terminal of the internet of things resides in any cell satisfying the residence condition, and calculates the moving speed of the mobile phone or the terminal of the internet of things according to the speed estimation algorithm, which may specifically refer to the speed estimation algorithm specified in 3GPP standard protocol 363045.2.4.3, and is not described herein again; the cell where the mobile phone or the internet of things resides can guarantee normal service, and meanwhile, the moving speed can be normally estimated.
And S2, the access layer reports the moving speed to the non-access layer through the interlayer information.
S3, the non-access stratum receives the moving speed, matches the moving speed with a corresponding timer, and updates the timer at the same time; wherein updating the timer comprises judging whether the timer is running; specifically, if the timer does not run, the non-access stratum updates the matched timer according to the moving speed; if the timer is running, calculating the residual value of the timer, and comparing the residual value with the value to be updated corresponding to the moving speed, namely if the residual value is larger than the value to be updated corresponding to the moving speed, updating the timer and restarting the timer, otherwise, not updating the timer.
Preferably, in this embodiment, the moving speed includes three values, namely a low speed value, a medium speed value and a high speed value, and three timers, namely a low speed timer, a medium speed timer and a high speed timer, are arranged corresponding to the moving speed, so that updating of different timers can be performed on mobile phones or internet of things terminals with different moving speeds more conveniently, a situation that a service recovery speed is slow due to searching of too large number of mobile phones or internet of things terminals in the same cell is avoided, and an optimized effect is achieved; of course, this is only a preferred embodiment of the method of the present invention, and is not a limitation and fixed to the present invention, and the moving speed can be divided into more and more detailed levels according to actual situations.
In a specific embodiment, when the timer is updated in the non-access stratum, if the timer is updated overtime, the non-access stratum sends the re-search information to the access stratum, and the access stratum re-searches for a cell meeting the residence condition in response to the re-search information and resides, that is, the above steps S1 to S3 are repeated until the updated timer is found, so as to implement a service recovery operation for the mobile phone or the internet of things terminal.
Compared with the prior art, the method for optimizing the cell search interval based on the terminal moving speed has the beneficial effects that: according to the invention, the mobile speed of the mobile phone or the Internet of things terminal is calculated on the access layer according to a speed estimation algorithm specified by a 3GPP standard protocol, the mobile speed is set to be low speed, medium speed and high speed, and a low speed timer, a medium speed timer and a high speed timer corresponding to the low speed, the medium speed and the high speed are correspondingly set in the non-access layer, so that the mobile phone or the Internet of things terminal can be updated by using different timers according to different mobile speeds, the recovery of service is realized, on one hand, the time for recovering the normal service of the mobile phone or the Internet of things terminal can be effectively shortened, and on the other hand, the endurance time of the mobile phone or the Internet of things terminal.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent changes may be made in some of the features of the embodiments described above. All equivalent structures made by using the contents of the specification and the attached drawings of the invention can be directly or indirectly applied to other related technical fields, and are also within the protection scope of the patent of the invention.
Claims (3)
1. A cell search interval optimization method based on terminal moving speed is applied to service recovery of a mobile phone or an Internet of things terminal in a limited state, and is characterized in that the mobile phone or the Internet of things terminal carries out connection search in a 3GPP standard protocol, and the method comprises the following steps:
s1, on an access layer, the mobile phone or the terminal of the Internet of things resides in any cell meeting the residence condition, and the moving speed of the mobile phone or the terminal of the Internet of things is calculated according to a speed estimation algorithm;
s2, the access layer reports the moving speed to a non-access layer through an interlayer message;
s3, the non-access stratum receives the moving speed, matches the moving speed with a corresponding timer and updates the timer at the same time;
in step S3, the updating the timer includes determining whether the timer is running: if the timer is not running, the non-access stratum updates the timer according to the moving speed; if the timer is running, calculating a remaining value of the timer, comparing the remaining value with a value to be updated corresponding to the moving speed, if the remaining value is larger than the value to be updated corresponding to the moving speed, updating the timer and restarting the timer, otherwise, not updating the timer.
2. The method for optimizing cell search interval based on terminal movement speed according to claim 1, wherein the method further comprises: and if the timer is overtime, the non-access layer sends re-search information to the access layer, and the access layer responds to the re-search information to re-search the cells meeting the residence conditions and resides.
3. The method for optimizing cell search interval based on mobile speed of a terminal according to claim 1, wherein said mobile speed includes three values of low speed, medium speed and high speed, and three said timers of low speed timer, medium speed timer and high speed timer are provided corresponding to said mobile speed.
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| CN201910014294.6A CN109451560B (en) | 2019-01-08 | 2019-01-08 | Method for optimizing cell search interval based on terminal moving speed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022271072A1 (en) * | 2021-06-24 | 2022-12-29 | Telefonaktiebolaget Lm Ericsson (Publ) | Optimization of plmn selection for power saving |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111857994B (en) * | 2020-06-29 | 2022-08-19 | 苏州浪潮智能科技有限公司 | High-precision timer scheduling method, device, equipment and readable medium |
| CN113507740B (en) * | 2021-06-29 | 2023-03-24 | 紫光展锐(重庆)科技有限公司 | Method and device for saving power consumption and terminal equipment |
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