CN114007252A - Internet of things terminal power saving mode control method, device and system and storage medium - Google Patents

Internet of things terminal power saving mode control method, device and system and storage medium Download PDF

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Publication number
CN114007252A
CN114007252A CN202010737555.XA CN202010737555A CN114007252A CN 114007252 A CN114007252 A CN 114007252A CN 202010737555 A CN202010737555 A CN 202010737555A CN 114007252 A CN114007252 A CN 114007252A
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China
Prior art keywords
internet
things
power saving
terminal
core network
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CN202010737555.XA
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Inventor
王文治
郭靓
崔立鹏
王志佳
阚悦源
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Priority to CN202010737555.XA priority Critical patent/CN114007252A/en
Publication of CN114007252A publication Critical patent/CN114007252A/en
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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
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0219—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave where the power saving management affects multiple terminals
    • 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
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The disclosure relates to a method, a device and a system for controlling a power saving mode of an internet of things terminal, and a storage medium. The power saving mode control method of the terminal of the Internet of things comprises the following steps: and the core network equipment modifies the power saving period of the power saving mode of the terminal of the Internet of things under the condition of initiating the downlink service. The method can modify the timer of the terminal of the internet of things based on the PSM power saving mode so as to avoid the instantaneous write pressure and the storage pressure of the base station side and the core network equipment side.

Description

Internet of things terminal power saving mode control method, device and system and storage medium
Technical Field
The disclosure relates to the field of internet of things, and in particular, to a method, an apparatus, a system, and a storage medium for controlling a power saving mode of an internet of things terminal.
Background
NB-IoT (Narrow Band Internet of Things) becomes an important branch of the world wide Internet. NB-IoT is constructed in a cellular network, consumes only about 180kHz bandwidth, and can be directly deployed in a GSM (Global System for Mobile Communications), UMTS (Universal Mobile Telecommunications System), or LTE (Long Term Evolution) network, so as to reduce deployment cost and achieve smooth upgrade.
The 3GPP develops technical research for enhancing the functions of the mobile communication network according to the narrowband service application scenario to meet the business requirements of the internet of things which are developed vigorously. NB-IoT is an emerging technology in the IoT field, supports cellular data connectivity for Low-Power devices over Wide Area networks, and is also called LPWAN (Low-Power Wide-Area Network). NB-IoT supports efficient connectivity for devices with long standby time and high requirements for network connectivity. NB-IoT device battery life is said to be improved by at least 10 years while still providing very comprehensive indoor cellular data connection coverage.
With the coming of smart cities and big data times, wireless communication can realize connection of everything. Many enterprises expect that the worldwide internet of things will be a billion times in the future. A large number of object-to-object connections have emerged, however, most of these connections are carried over short-range communication technologies such as bluetooth, Wi-Fi, etc., but not the operator mobile network. In order to meet different business requirements of the Internet of things, according to the business characteristics of the Internet of things and the characteristics of a mobile communication network,
in practical application, a constructor of each smart city sensor network needs to construct a telecommunication network and a sensor network, and NB-IoT and eMTC (Massive Machine Type Communication) are key technologies in the Internet of things; the terminal of the Internet of things is a device which is connected with a sensing network layer and a transmission network layer in the Internet of things and realizes data acquisition and data transmission to the network layer. It is responsible for data acquisition, preliminary processing, encryption, transmission and other functions.
The terminal of the Internet of things is a device which is connected with a sensing network layer and a transmission network layer in the Internet of things and realizes data acquisition and data transmission to the network layer. It is responsible for data acquisition, preliminary processing, encryption, transmission and other functions. The fixed position of the internet of things terminal refers to the position of the internet of things terminal after installation, such as a meter reading type internet of things terminal. The introduction of NB-IoT has brought great improvement requirements to LTE networks.
Disclosure of Invention
The inventor finds out through research that: in a fixed scene, for example, in scenes such as an intelligent manhole cover and an intelligent street lamp, a situation that a base station is instantly accessed at the same time or in a short time may occur, one CELL of NB-IoT theoretically can accommodate 5 ten thousand internet of things terminals, the NB base station of an operator only has less than 100 instantaneous concurrencies in an actual test process, when a core network side needs to operate a batch of internet of things terminals, all the internet of things terminals may be caused to instantly exit a power saving mode to establish and attach a Radio Resource Control (RRC) connection, and meanwhile, the eNB (base station) and the MME (mobile Management node) side may also have pressure for data writing and storage.
In view of at least one of the above technical problems, the present disclosure provides a method, an apparatus, and a system for controlling a power saving mode of an internet of things terminal, and a storage medium, which can modify a timer of the internet of things terminal based on a PSM power saving mode to avoid an instantaneous write pressure and a storage pressure on a base station side and a core network device side.
According to one aspect of the disclosure, a method for controlling a power saving mode of an internet of things terminal is provided, which includes:
and the core network equipment modifies the power saving period of the power saving mode of the terminal of the Internet of things under the condition of initiating the downlink service.
In some embodiments of the present disclosure, the method for controlling a power saving mode of an internet of things terminal further includes:
and the core network equipment processes and sequences the serial numbers of the terminals of the Internet of things.
In some embodiments of the disclosure, the modifying the power saving period of the power saving mode of the terminal of the internet of things includes:
and modifying the power saving period of the power saving mode of the internet of things terminals with the same kind and different serial numbers according to the sequenced serial numbers of the internet of things terminals.
In some embodiments of the present disclosure, the method for controlling a power saving mode of an internet of things terminal further includes:
the core network equipment acquires the base station side capacity.
In some embodiments of the disclosure, modifying the power saving cycle of the power saving mode of the internet of things terminal with the same kind and different serial numbers according to the sorted serial numbers of the internet of things terminal includes:
and modifying the power saving period of the power saving modes of the Internet of things terminals with the same kind of different serial numbers according to the sequenced serial numbers of the Internet of things terminals and the base station capacity.
In some embodiments of the present disclosure, modifying the power saving cycle of the power saving mode of the internet of things terminal with the same kind and different serial numbers according to the sequenced serial numbers of the internet of things terminal and the sequenced capacity of the base station includes:
the core network equipment counts the number of terminals and the number of base stations of the Internet of things;
the core network equipment determines the maximum instantaneous access number of the base stations according to the ratio of the number of the terminals of the Internet of things to the number of the base stations;
the core network equipment determines the packet number according to the maximum instantaneous access number of the base station and the instantaneous maximum bearing capacity of the base station;
and the core network equipment groups the terminals of the Internet of things according to the grouping quantity.
In some embodiments of the disclosure, modifying the power saving cycle of the power saving mode of the internet of things terminal with the same kind and different serial numbers according to the sequenced serial numbers of the internet of things terminal and the sequenced capacity of the base station further includes:
the core network equipment determines an initialization power saving period of the Internet of things terminal based on the maximum instantaneous access number of the base station;
the core network equipment determines the total time interval according to the required registration quitting time and the preset time delay;
the core network equipment takes the remainder of the division of the serial number of the Internet of things terminal and the total number of the time intervals as the sequence of the time intervals;
the core network equipment takes the product of the sequence of the time intervals and the preset time delay as a period adjustment value;
and the core network equipment takes the sum of the initialized power saving period and the period adjustment value as the power saving period of the terminal of the Internet of things.
In some embodiments of the disclosure, modifying the power saving cycle of the power saving mode of the internet of things terminal with the same kind and different serial numbers according to the sequenced serial numbers of the internet of things terminal and the sequenced capacity of the base station further includes:
and the core network equipment increases the initial value of the enhanced discontinuous reception timer of the terminal of the Internet of things by the period adjustment value.
In some embodiments of the present disclosure, the processing and sorting, by the core network device, the serial number of the terminal of the internet of things includes:
the core network equipment encodes the serial number of the terminal of the Internet of things into a pure number;
and the core network equipment sequences the coded serial numbers of the Internet of things terminals.
In some embodiments of the present disclosure, the method for controlling a power saving mode of an internet of things terminal further includes:
the base station releases the radio resource control connection with the terminal of the Internet of things under the conditions that the terminal of the Internet of things finishes sending data and the inactive timer is overtime;
the terminal of the Internet of things enters an enhanced discontinuous receiving mode, and the enhanced discontinuous receiving timer enters a power saving mode after being overtime;
and after the updating period of the tracking area is overtime, the terminal of the Internet of things enters the next power saving mode period.
In some embodiments of the present disclosure, the method for controlling a power saving mode of an internet of things terminal further includes:
when the internet of things terminal releases the radio resource control connection, the internet of things terminal reports the initial values of the inactive timer and the enhanced discontinuous reception timer of the internet of things terminal and the serial number of the internet of things terminal to the core network equipment.
According to another aspect of the present disclosure, there is provided a core network device including:
and the terminal power saving cycle modification module is used for modifying the power saving cycle of the power saving mode of the terminal of the Internet of things under the condition of initiating the downlink service.
In some embodiments of the present disclosure, the core network device is configured to perform an operation for implementing the power saving mode control method for the terminal of the internet of things according to any one of the embodiments.
According to another aspect of the present disclosure, there is provided a core network device including:
a memory to store instructions;
a processor, configured to execute the instructions, so that the apparatus performs an operation to implement the power saving mode control method for the terminal of the internet of things according to any of the embodiments.
According to another aspect of the present disclosure, a power saving mode control system for an internet of things terminal is provided, which includes the core network device according to any of the above embodiments.
In some embodiments of the present disclosure, the power saving mode control system for an internet of things terminal further includes:
the base station is used for releasing the radio resource control connection with the terminal of the Internet of things under the conditions that the terminal of the Internet of things finishes sending data and the inactive timer is overtime;
the Internet of things terminal is used for entering an enhanced discontinuous reception mode under the condition of releasing the wireless resource control connection with the Internet of things terminal; entering a power saving mode after the enhanced discontinuous reception timer is overtime; and after the updating period of the tracking area is overtime, entering the next power saving mode period.
In some embodiments of the present disclosure, the power saving mode control system for an internet of things terminal further includes:
and the Internet of things terminal is used for reporting the initial values of the passive timer and the enhanced discontinuous reception timer of the Internet of things terminal and the serial number of the Internet of things terminal to the core network equipment when the Internet of things terminal releases the radio resource control connection.
According to another aspect of the present disclosure, a computer-readable storage medium is provided, where the computer-readable storage medium stores computer instructions, and the instructions, when executed by a processor, implement the power saving mode control method for an internet of things terminal according to any of the above embodiments.
The method can modify the timer of the terminal of the internet of things based on the PSM power saving mode so as to avoid the instantaneous write pressure and the storage pressure of the base station side and the core network equipment side.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of some embodiments of a power saving mode control system of an internet of things terminal according to the disclosure.
Fig. 2 is a schematic diagram of another embodiment of a power saving mode control system of an internet of things terminal according to the disclosure.
Fig. 3 is a schematic diagram of a PSM mode of an internet of things terminal according to the present disclosure.
Fig. 4 is a schematic diagram of some embodiments of a power saving mode control method for an internet of things terminal according to the disclosure.
Fig. 5 is a schematic diagram of other embodiments of the power saving mode control method for the terminal of the internet of things according to the disclosure.
Fig. 6 is a schematic diagram of some embodiments of a core network device of the present disclosure.
Fig. 7 is a schematic diagram of another embodiment of a core network apparatus according to the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic diagram of some embodiments of a power saving mode control system of an internet of things terminal according to the disclosure. As shown in fig. 1, the power saving mode control system for an internet of things terminal according to the present disclosure may include a core network device 11, a base station 12, and an internet of things terminal 13, where:
the base station 12 is used for releasing the radio resource control connection with the terminal of the internet of things when the terminal of the internet of things finishes sending data and the inactive timer is overtime;
in some embodiments of the present disclosure, the base station 12 may be an NB-IoT base station eNB (LTE base station with software upgrades and partial hardware upgrades).
The internet of things terminal 13 is used for entering an enhanced discontinuous reception mode under the condition of releasing the radio resource control connection with the internet of things terminal; entering a power saving mode after the enhanced discontinuous reception timer is overtime; and after the updating period of the tracking area is overtime, entering the next power saving mode period.
In some embodiments of the present disclosure, the internet of things terminal 13 may be an NB-IoT.
In some embodiments of the present disclosure, the internet of things terminal 13 may be a three-meter (electricity meter, water meter, natural gas meter) including an NB-IoT module.
In some embodiments of the present disclosure, the internet of things terminal 13 may be an NB-IoT terminal such as an intelligent manhole cover or an intelligent street lamp.
In some embodiments of the present disclosure, the internet of things terminal 13 may be further configured to report an initial value of an inactivity timer and an initial value of an enhanced discontinuous reception timer of the internet of things terminal, and a sequence number of the internet of things terminal to the core network device when the internet of things terminal releases the radio resource control connection.
The core network device 11 may be configured to modify a power saving PSM period of a power saving mode of the internet of things terminal when initiating the downlink service.
In some embodiments of the present disclosure, the core network device 11 may be an MME (mobile Management Entity).
In some embodiments of the present disclosure, the core network device 11 may be an NB-IoT core network device.
Fig. 2 is a schematic diagram of another embodiment of a power saving mode control system of an internet of things terminal according to the disclosure. Compared with the embodiment of fig. 1, in the embodiment of fig. 2, the core network device 11 is an NB-IoT core network, the base station 12 is an NB-IoT base station, and the internet of things terminal 13 is a three-meter (electricity meter, water meter, natural gas meter) including an NB-IoT module. The power saving mode control system of the terminal in the internet of things in the embodiment of fig. 2 may further include an NB-IoT management platform, which may be an NB-IoT management platform of ericsson or hua-shi vendors.
Fig. 3 is a schematic diagram of a PSM mode of an internet of things terminal according to the present disclosure. As shown in fig. 3, after the data transmission of the terminal NB-IoT of the internet of things is completed, the Inactivity Timer expires and then the RRC link is released, no data interaction occurs, and the terminal NB-IoT of the internet of things enters an Idle mode, which is configured by the base station; then, after an eDRX (extended Discontinuous Reception enhanced Discontinuous Reception) timer T3324 is overtime, entering a PSM mode after no data interaction, at the moment, the terminal of the Internet of things is also registered to a core network, and context connection information and the like are reserved, wherein the process is configured by the core network; the internet of things terminal exiting the PSM mode and entering the Connected state is triggered by services and signaling on the eNB side or the terminal side, namely entering the Connected state after no interactive data exists, and the terminal actively sends uplink data or receives downlink paging data and enters the Connected state, wherein the process is configured by a core network; and the terminal of the Internet of things enters a PSM mode of the next round when the timer of the periodic tracking area is overtime.
The inventor finds out through research that: when services come in at an internet of things terminal or a core network side, batch terminals may quit the PSM at the same time, and meanwhile, network attachment is carried out, which will bring pressure to the network side.
The embodiment of the invention can modify the timer of the terminal of the internet of things based on the PSM power saving mode so as to avoid the instantaneous write pressure and the storage pressure of the base station side and the core network equipment side.
Fig. 4 is a schematic diagram of some embodiments of a power saving mode control method for an internet of things terminal according to the disclosure. Preferably, the embodiment may be executed by the core network device or the power saving mode control system of the internet of things terminal. The method of the embodiment of fig. 4 may include the steps of:
step 41, modifying the power saving cycle of the power saving mode of the terminal of the internet of things by the core network equipment under the condition of initiating the downlink service.
Based on the method for controlling the power saving mode of the internet of things terminal provided by the embodiment of the disclosure, the timer of the internet of things terminal can be modified based on the PSM power saving mode, so that the instantaneous writing pressure and the storage pressure of the base station side and the core network equipment side are avoided.
Fig. 5 is a schematic diagram of other embodiments of the power saving mode control method for the terminal of the internet of things according to the disclosure. Preferably, the embodiment may be executed by the core network device or the power saving mode control system of the internet of things terminal. The method of the embodiment of fig. 5 may comprise the following steps 51-53, wherein:
step 51, PSM mode entry.
In some embodiments of the present disclosure, step 51 may comprise: the base station releases the radio resource control connection with the terminal of the Internet of things under the conditions that the terminal of the Internet of things finishes sending data and the inactive timer is overtime; the terminal of the Internet of things enters an enhanced discontinuous reception (eDRX) mode, and the enhanced discontinuous reception timer T3324 enters a power-saving mode after being overtime; after the TAU (tracking area update) period is overtime, the terminal of the internet of things enters the next power saving mode period.
Step 52, PSM mode registration management.
In some embodiments of the present disclosure, step 52 may comprise: when the internet of things terminal releases the radio resource control connection, the internet of things terminal reports the initial values of the inactive timer and the enhanced discontinuous reception timer of the internet of things terminal and the S/N (Serial Number) of the internet of things terminal to core network equipment (such as MME), wherein the Serial Number is coded after being transmitted to the MME and is coded into pure numbers.
In some embodiments of the present disclosure, step 52 may comprise: after the internet of things terminal finishes sending data, the inactive timer is overtime, the eNB releases the RRC link, and the internet of things terminal reports the initial values of the discontinuous reception timer T3324 and the inactive timer of the terminal and the S/N of the terminal when releasing the RRC link (the internet of things module side converts the S/N into numbers). Generally, the terminal values are the same for the same type of terminal.
Step 53, dynamic adjustment of the PSM period.
In some embodiments of the present disclosure, step 53 may comprise: the core network equipment modifies the PSM mode and the period of the Internet of things module with the same type and different serial numbers in order to avoid batch terminal exit under the condition of initiating downlink service, and modifies the PSM period in terms of time.
In some embodiments of the present disclosure, step 53 may comprise steps 531-533, wherein:
and 531, the core network equipment processes and sequences the serial numbers of the terminals of the internet of things.
In some embodiments of the present disclosure, step 531 may comprise: the core network equipment encodes the serial number of the terminal of the Internet of things into a pure number; and the core network equipment sequences the coded serial numbers of the Internet of things terminals.
In some embodiments of the present disclosure, step 531 may comprise: after receiving the timer period of the terminal, the MME calculates the sum of initial values of an inactive timer and a discontinuous reception timer T3324, and calculates the sum as a PSM period; coding the serial number of the terminal of the Internet of things into a pure number; and simultaneously, carrying out one-to-one correspondence on the S/N serial numbers and sequencing the S/N serial numbers.
Step 532, the core network device obtains the base station side capacity.
In some embodiments of the present disclosure, step 532 may comprise: the core network equipment counts the number M of terminals of the Internet of things and the number N of base stations eNB; and the core network equipment determines the maximum instantaneous access number P of the base station according to the ratio M/N of the number M of the terminals of the Internet of things and the number N of the base station eNBs.
In some embodiments of the present disclosure, step 532 may comprise: the MME counts the number M of terminals of the internet of things accessed currently and the number N of the eNBs, the number of the terminals of the internet of things is distributed to the eNBs in a balanced mode, the maximum instantaneous access number of one of the eNBs is calculated to be M/N (P), namely one eNB can contain P devices to perform instantaneous attachment, the P devices are reordered on the side of a core network, and meanwhile, the period is T on the basis of the initialized PSM of the P devices.
And step 533, modifying the power saving period of the power saving mode of the internet of things terminals with the same kind and different serial numbers according to the sorted serial numbers of the internet of things terminals and the capacity of the base station.
In some embodiments of the present disclosure, step 533 may include steps 5331-5337, wherein:
5331, the core network device determines a packet number K according to the maximum instantaneous access number P of the base station and the instantaneous maximum bearing capacity of the base station; and the core network equipment groups the terminals of the Internet of things according to the grouping number K.
In some embodiments of the present disclosure, the NB-IoT base station instantaneous maximum capacity of a certain operator is 100.
In some embodiments of the present disclosure, step 5331 may comprise: determining the grouping number K according to the integer of (M/N)/100; and the core network equipment groups the terminals of the Internet of things according to the grouping number K.
Step 5332, the core network device determines an initialization power saving period T of the terminal of the internet of things based on the maximum instantaneous access number P of the base station.
Step 5333, the core network device determines the total number of time intervals according to the required registration exit time and the predetermined time delay t.
In some embodiments of the present disclosure, the predetermined delay t may be 120ms, that is, the end-to-end delay and the data processing delay in the LTE system may be controlled at t 120ms, so the present disclosure needs to discretize the NB-IoT device on the PSM period at an interval of t 120 ms.
In some embodiments of the present disclosure, the required deregistration time may be 6 seconds. That is, the terminal of the internet of things needs to perform the exit and registration of all PSM periods within 6S.
In some embodiments of the present disclosure, step 5333 may comprise: the core network device determines a total number n of time intervals (for example, n is 6s/120ms is 50) according to a quotient of the required registration exit time and the predetermined time delay t.
Step 5334, the core network device uses the remainder of the division between the serial number S/N of the internet of things terminal and the total number N of the time intervals as the sequence Q of the time intervals.
In some embodiments of the present disclosure, step 5334 may comprise: the core network device takes the (S/N)/50 remainder, because the S/N is different and each remainder is different, the remainder is Q, and finds the Q time interval in 50 intervals.
In step 5335, the core network device takes the product Q × t of the sequence Q of time intervals and the predetermined time delay t as the period adjustment value.
Step 5336, the core network device uses the sum of the initialized power saving period T and the period adjustment value as the power saving period of the terminal of the internet of things.
Step 5337, the core network device increases the initial value of the enhanced discontinuous reception timer T3324 of the internet of things terminal by the period adjustment value.
In some embodiments of the present disclosure, steps 5335-5337 may comprise: the PSM period of S/N is modified to T + Q0.12S, since no RRC link exists in PSM mode, the present disclosure adds Q0.12S to the enhanced discontinuous reception T3324, thereby avoiding the uninterrupted establishment of RRC link in eDRX mode.
The above embodiments of the present disclosure may perform the adjustment of the protocol layer based on the base station side capacity. The core network side of the above embodiments of the present disclosure processes and sequences the S/N sequence numbers. The terminals of the internet of things in the embodiment of the disclosure poll in different PSM periods in batches, so that scenes exiting at the same time are avoided.
The above embodiments of the present disclosure provide a PSM mode-based discretization algorithm. The embodiments of the present disclosure belong to the field of internet of things, and can solve the problem of load balancing in NB-IoT by using the internet of things and internet related technologies and using a PSM mode.
The embodiment of the present disclosure can be applied to a smart city system, in the scene of an intelligent street lamp, the internet of things background can trigger the same lamp post to trigger the same service and scene, and the enhanced discontinuous reception timer T3324 and the inactive timer at the internet of things terminal of the same batch are possibly the same, so that the time differentiation and discretization of the internet of things terminal based on the PSM mode designed by the embodiment of the present disclosure are avoided, and the problems of exiting the PSM and being attached to the MME at the same time to cause network failure are avoided. The method and the scene of the embodiment of the disclosure can be applied to a smart city system, and can scientifically and intelligently avoid the problems of the Internet of things network and the platform brought by a perception layer.
Fig. 6 is a schematic diagram of some embodiments of a core network device of the present disclosure. As shown in fig. 6, the core network device of the present disclosure may include a terminal power saving cycle modification module 61, where:
and the terminal power saving cycle modification module 61 is configured to modify the power saving cycle of the power saving mode of the terminal of the internet of things when initiating the downlink service.
In some embodiments of the present disclosure, as shown in fig. 6, the core network device of the present disclosure may include a serial number processing module 62, where:
and the serial number processing module 62 is configured to process and sequence the serial number of the internet of things terminal.
In some embodiments of the present disclosure, the serial number processing module 62 may be configured to encode, by the core network device, the serial number of the terminal of the internet of things, where the encoding is a pure number; and the core network equipment sequences the coded serial numbers of the Internet of things terminals.
In some embodiments of the present disclosure, the terminal power saving cycle modification module 61 may be configured to modify the power saving cycles of the power saving modes of the internet of things terminals with the same kind and different serial numbers according to the sorted serial numbers of the internet of things terminals.
In some embodiments of the present disclosure, as shown in fig. 6, the core network device of the present disclosure may include a base station capacity obtaining module 63, where:
and a base station capacity obtaining module 63, configured to obtain a base station side capacity.
In some embodiments of the present disclosure, the terminal power saving cycle modification module 61 may be configured to modify the power saving cycles of the power saving modes of the internet of things terminals with the same kind and different serial numbers according to the sorted serial numbers of the internet of things terminals and the base station capacity.
In some embodiments of the present disclosure, the terminal power saving cycle modification module 61 may be configured to count the number of terminals and the number of base stations in the internet of things; determining the maximum instantaneous access number of the base station according to the ratio of the number of the terminals of the Internet of things to the number of the base stations; determining the grouping number according to the maximum instantaneous access number of the base station and the instantaneous maximum bearing capacity of the base station; and grouping the terminals of the Internet of things according to the grouping number.
In some embodiments of the present disclosure, the terminal power saving cycle modification module 61 may be configured to determine an initialization power saving cycle of the terminal of the internet of things based on the maximum instantaneous access number of the base station; determining the total time interval according to the required registration quitting time and the preset time delay; taking the remainder of the division of the serial number of the terminal of the Internet of things and the total number of the time intervals as the sequence of the time intervals; taking the product of the sequence of time intervals and the predetermined time delay as a period adjustment value; and taking the sum of the initialized power saving period and the period adjustment value as the power saving period of the terminal of the Internet of things.
In some embodiments of the present disclosure, the terminal power saving period modification module 61 may be configured to increase the initial value of the enhanced discontinuous reception timer of the internet of things terminal by the period adjustment value.
In some embodiments of the present disclosure, the core network device 11 may be an MME.
In some embodiments of the present disclosure, the core network device 11 may be an NB-IoT core network device.
In some embodiments of the present disclosure, the core network device may be configured to perform operations for implementing the power saving mode control method for the terminal of the internet of things according to any of the embodiments (e.g., fig. 4 or fig. 5).
Based on the core network equipment provided by the embodiment of the disclosure, the timer of the internet of things terminal can be modified based on the PSM power saving mode, so that the instantaneous write pressure and the storage pressure of the base station side and the core network equipment side are avoided.
Fig. 7 is a schematic diagram of another embodiment of a core network apparatus according to the present disclosure. As shown in fig. 7, the core network device of the present disclosure may include a memory 71 and a processor 72, wherein:
a memory 71 for storing instructions.
A processor 72, configured to execute the instructions, so that the apparatus performs an operation to implement the power saving mode control method of the terminal in the internet of things according to any of the embodiments (for example, fig. 4 or fig. 5) described above.
The above embodiments of the present disclosure may perform the adjustment of the protocol layer based on the base station side capacity. The core network side of the above embodiments of the present disclosure processes and sequences the S/N sequence numbers. The terminals of the internet of things in the embodiment of the disclosure poll in different PSM periods in batches, so that scenes exiting at the same time are avoided.
The embodiment of the present disclosure can be applied to a smart city system, in the scene of an intelligent street lamp, the internet of things background can trigger the same lamp post to trigger the same service and scene, and the enhanced discontinuous reception timer T3324 and the inactive timer at the internet of things terminal of the same batch are possibly the same, so that the time differentiation and discretization of the internet of things terminal based on the PSM mode designed by the embodiment of the present disclosure are avoided, and the problems of exiting the PSM and being attached to the MME at the same time to cause network failure are avoided. The method and the scene of the embodiment of the disclosure can be applied to a smart city system, and can scientifically and intelligently avoid the problems of the Internet of things network and the platform brought by a perception layer.
According to another aspect of the present disclosure, a computer-readable storage medium is provided, where the computer-readable storage medium stores computer instructions, and the instructions, when executed by a processor, implement the power saving mode control method for the terminal in the internet of things according to any one of the embodiments (for example, fig. 4 or fig. 5) above.
Based on the computer-readable storage medium provided by the above-mentioned embodiment of the present disclosure, the timer may be modified for the terminal of the internet of things based on the PSM power saving mode, so as to avoid the transient write pressure and storage pressure at the base station side and the core network device side.
The core network devices described above may be implemented as a general purpose processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof, for performing the functions described herein.
Thus far, the present disclosure has been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware to implement the above embodiments, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disk, or the like.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (16)

1. A power saving mode control method for an Internet of things terminal is characterized by comprising the following steps:
and the core network equipment modifies the power saving period of the power saving mode of the terminal of the Internet of things under the condition of initiating the downlink service.
2. The internet of things terminal power saving mode control method of claim 1, further comprising:
the core network equipment processes and sequences the serial numbers of the terminals of the Internet of things;
wherein, modifying the power saving cycle of the power saving mode of the terminal of the internet of things comprises:
and modifying the power saving period of the power saving mode of the internet of things terminals with the same kind and different serial numbers according to the sequenced serial numbers of the internet of things terminals.
3. The internet of things terminal power saving mode control method according to claim 2, further comprising:
core network equipment acquires the side capacity of a base station;
wherein, according to the serial number of the internet of things terminal after sequencing, modifying the power saving cycle of the power saving mode of the internet of things terminal with the same kind and different serial numbers comprises:
and modifying the power saving period of the power saving modes of the Internet of things terminals with the same kind of different serial numbers according to the sequenced serial numbers of the Internet of things terminals and the base station capacity.
4. The method for controlling the power saving mode of the terminal in the internet of things according to claim 3, wherein the modifying the power saving period of the power saving mode of the terminal in the internet of things with the same kind and different serial numbers according to the sorted serial numbers of the terminals in the internet of things and the base station capacity comprises:
the core network equipment counts the number of terminals and the number of base stations of the Internet of things;
the core network equipment determines the maximum instantaneous access number of the base stations according to the ratio of the number of the terminals of the Internet of things to the number of the base stations;
the core network equipment determines the packet number according to the maximum instantaneous access number of the base station and the instantaneous maximum bearing capacity of the base station;
and the core network equipment groups the terminals of the Internet of things according to the grouping quantity.
5. The method for controlling the power saving mode of the terminal in the internet of things according to claim 4, wherein the modifying the power saving period of the power saving mode of the terminal in the internet of things with the same kind and different serial numbers according to the sorted serial numbers of the terminals in the internet of things and the base station capacity further comprises:
the core network equipment determines an initialization power saving period of the Internet of things terminal based on the maximum instantaneous access number of the base station;
the core network equipment determines the total time interval according to the required registration quitting time and the preset time delay;
the core network equipment takes the remainder of the division of the serial number of the Internet of things terminal and the total number of the time intervals as the sequence of the time intervals;
the core network equipment takes the product of the sequence of the time intervals and the preset time delay as a period adjustment value;
and the core network equipment takes the sum of the initialized power saving period and the period adjustment value as the power saving period of the terminal of the Internet of things.
6. The method for controlling the power saving mode of the terminal in the internet of things according to claim 5, wherein the modifying the power saving period of the power saving mode of the terminal in the internet of things with the same kind and different serial numbers according to the sorted serial numbers of the terminals in the internet of things and the base station capacity further comprises:
and the core network equipment increases the initial value of the enhanced discontinuous reception timer of the terminal of the Internet of things by the period adjustment value.
7. The internet of things terminal power saving mode control method according to any one of claims 2 to 6, wherein the processing and sorting of the serial number of the internet of things terminal by the core network device includes:
the core network equipment encodes the serial number of the terminal of the Internet of things into a pure number;
and the core network equipment sequences the coded serial numbers of the Internet of things terminals.
8. The internet of things terminal power saving mode control method according to any one of claims 1 to 6, further comprising:
the base station releases the radio resource control connection with the terminal of the Internet of things under the conditions that the terminal of the Internet of things finishes sending data and the inactive timer is overtime;
the terminal of the Internet of things enters an enhanced discontinuous receiving mode, and the enhanced discontinuous receiving timer enters a power saving mode after being overtime;
and after the updating period of the tracking area is overtime, the terminal of the Internet of things enters the next power saving mode period.
9. The internet of things terminal power saving mode control method of claim 8, further comprising:
when the internet of things terminal releases the radio resource control connection, the internet of things terminal reports the initial values of the inactive timer and the enhanced discontinuous reception timer of the internet of things terminal and the serial number of the internet of things terminal to the core network equipment.
10. A core network device, comprising:
and the terminal power saving cycle modification module is used for modifying the power saving cycle of the power saving mode of the terminal of the Internet of things under the condition of initiating the downlink service.
11. The core network device according to claim 10, wherein the core network device is configured to perform an operation to implement the internet of things terminal power saving mode control method according to any one of claims 1 to 7.
12. A core network device, comprising:
a memory to store instructions;
a processor configured to execute the instructions to cause the apparatus to perform operations to implement the internet of things terminal power saving mode control method according to any one of claims 1 to 7.
13. An internet of things terminal power saving mode control system, characterized by comprising the core network device of any one of claims 10-12.
14. The internet of things terminal power saving mode control system of claim 13, further comprising:
the base station is used for releasing the radio resource control connection with the terminal of the Internet of things under the conditions that the terminal of the Internet of things finishes sending data and the inactive timer is overtime;
the Internet of things terminal is used for entering an enhanced discontinuous reception mode under the condition of releasing the wireless resource control connection with the Internet of things terminal; entering a power saving mode after the enhanced discontinuous reception timer is overtime; and after the updating period of the tracking area is overtime, entering the next power saving mode period.
15. The internet of things terminal power saving mode control system of claim 13 or 14, further comprising:
and the Internet of things terminal is used for reporting the initial values of the passive timer and the enhanced discontinuous reception timer of the Internet of things terminal and the serial number of the Internet of things terminal to the core network equipment when the Internet of things terminal releases the radio resource control connection.
16. A computer-readable storage medium storing computer instructions which, when executed by a processor, implement the power saving mode control method for the internet of things terminal according to any one of claims 1 to 9.
CN202010737555.XA 2020-07-28 2020-07-28 Internet of things terminal power saving mode control method, device and system and storage medium Pending CN114007252A (en)

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