CN110798887B - Method and system for improving paging response probability - Google Patents
Method and system for improving paging response probability Download PDFInfo
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- CN110798887B CN110798887B CN201910889500.8A CN201910889500A CN110798887B CN 110798887 B CN110798887 B CN 110798887B CN 201910889500 A CN201910889500 A CN 201910889500A CN 110798887 B CN110798887 B CN 110798887B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
Abstract
The invention discloses a method for improving paging response probability, which is used for improving the paging response probability in an eDRX period of an NB network, and comprises the following steps: step S1: establishing a first paging time window and a second paging time window in one eDRX period; step S2: when entering an eDRX period, monitoring a network paging channel in a first paging time window and a second paging time window in sequence, and trying to establish link connection with a network; step S3: and receiving network downlink data when the link connection with the network is successfully established in the first paging time window or the second paging time window. The invention also discloses a system for improving the paging response probability; the invention increases a paging time window in the eDRX period and matches the paging time window with a timer, thereby improving the probability of the terminal responding to network paging.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and a system for improving paging response probability.
Background
In the existing NB-IoT system, the aim of saving battery energy consumption is fulfilled by enabling the terminal to periodically enter an idle state at certain time; the NB-IOT system has the technical advantages of low power consumption, low cost, wide coverage, large connection and the like, wherein the most important reason is that the NB-IOT system adopts an eDRX (extended DRX) mode; the eDRX mode enables the terminal to be in an idle state for a longer time by the negotiation and cooperation between the core network and the terminal, and skips most paging monitoring, thereby achieving the purpose of saving electricity.
When the terminal is in an idle state of an eDRX mode, the terminal determines that the terminal is awakened at a certain moment of an eDRX period through negotiation with a network, and monitors a paging channel; the network sends out paging at the moment when the terminal is awakened, and sends downlink data after receiving the paging response of the terminal; however, when the time when the network paging arrives is not consistent with the time when the terminal is awakened, probabilistic paging response is unsuccessful, and the terminal cannot acquire network downlink data in time and obviously increases power consumption, so that how to improve the probability of network paging response becomes a big problem.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method and a system for improving the paging response probability, which are used for improving the paging response probability of a network.
In order to solve the above technical problem, the present invention provides a method for improving paging response probability, wherein the method comprises the following steps:
step S1: establishing a first paging time window and a second paging time window in one eDRX period;
step S2: when entering an eDRX period, monitoring a network paging channel in a first paging time window and a second paging time window in sequence, and trying to establish link connection with a network;
step S3: and receiving network downlink data when the link connection with the network is successfully established in the first paging time window or the second paging time window.
The present invention further provides a system 100 for improving paging response probability, which is used for improving paging response probability in eDRX cycle of NB network, and the system includes:
a window establishing module, configured to establish a first paging time window and a second paging time window within an eDRX cycle;
the link establishment module is used for monitoring a network paging channel in a first paging time window and a second paging time window in sequence and trying to establish link connection with a network when entering an eDRX period;
and the data receiving module is used for receiving network downlink data when the link connection with the network is successfully established in the first paging time window or the second paging time window.
The method and the system for improving the paging response probability provided by the invention have the advantages that a paging time window is added in an eDRX period, a timer is matched for the paging time window, the terminal tries to establish a link with a network in a first paging time window and a second paging time window in sequence, and when the link establishment in any one paging time window is successful, the downlink data of the network can be received, so the probability of the terminal responding to the network paging is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a flowchart of a method for improving a paging response probability according to an embodiment of the present invention.
Fig. 2 is a sub-flowchart of step S2 in fig. 1.
Fig. 3 is a timing diagram of a first paging window and a second paging window in an eDRX cycle of fig. 1.
Fig. 4 is a block diagram of a system for improving the probability of page response in an embodiment of the present invention.
Fig. 5 is a block diagram of the structure of the link establishment module of fig. 4.
Detailed Description
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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "first" and "second" are only used for convenience of description and simplification of the description, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for improving a probability of page response according to an embodiment of the present invention.
As shown in fig. 1, the present invention provides a method for improving the probability of page response, which comprises the following steps:
step S1: establishing a first paging time window and a second paging time window in one eDRX period;
step S2: when entering an eDRX period, monitoring a network paging channel in a first paging time window and a second paging time window in sequence, and trying to establish link connection with a network;
step S3: and receiving network downlink data when the link connection with the network is successfully established in the first paging time window or the second paging time window.
Therefore, the method for improving the paging response probability provided by the invention increases a paging time window in an eDRX period, the terminal tries to establish a link with the network in the first paging time window and the second paging time window in sequence, and can receive the downlink data of the network when the link establishment in any one paging time window is successful, thereby improving the probability that the terminal responds to the network paging.
Referring to fig. 2 and 3, fig. 2 is a sub-flowchart of step S2 in fig. 1; fig. 3 is a timing diagram of a first paging time window and a second paging time window in an eDRX cycle in fig. 1.
As shown in fig. 2, in some embodiments, the step S2 includes:
step S21, when entering into eDRX period, monitoring paging channel in the first paging time window and trying to establish link connection with network;
step S23, if the link connection between the terminal and the network fails in the first paging time window, starting a timer to time;
and step S25, entering a second paging time window while starting the timer, monitoring the paging channel in the second paging time window by the terminal, and trying to establish link connection with the network.
As shown in fig. 3, the eDRX cycle is to make the terminal periodically enter a sleep state at some time to achieve the purpose of saving battery consumption; one eDRX cycle includes an awake mode (On Duration) and a sleep mode (Opportunity for eDRX), and the terminal monitors a paging channel when in the awake mode; and when the terminal is in a dormant state, the terminal does not monitor a paging channel.
The Paging Time Window (PTW) is located on a hyper frame number (Paging hyper frame) where a Paging message in the awake mode of the eDRX cycle is located; the terminal obtains a paging time window starting point (PTW _ start) and a paging time window stopping point (PTW _ stop) through calculation, and a time period between the paging time window starting point and the paging time window stopping point is a paging time window. The terminal can only monitor the paging channel according to the paging cycle in the paging time window so as to receive the downlink service;
the terminal is in a sleep mode in the time outside the paging time window, does not monitor a paging channel, and cannot receive downlink services. At this time, if the network has a downlink data packet to be sent to the terminal, the network will perform caching, and when the paging time window is entered again, the network will page the terminal, establish connection, and send the data packet.
Each paging time window comprises a plurality of paging cycles, and each paging cycle is used for the terminal to try to perform link connection with the network at least once.
The paging channel is a downlink control channel used for transmitting data related to the paging process, is used for a base station to page a mobile station, consists of parts of convolutional coding, packet interleaving, code element repetition, spread spectrum, modulation and the like, and mainly transmits the common information of a system and the specific information of the mobile station.
The link connection refers to a connection mode that when the terminal accesses the NB-loT network, Radio resources can be allocated to the terminal, and a specific connection mode generally adopts RRC connection (RRC); the RRC connection follows a radio resource control protocol, and is used to process the third layer information of the control plane between the terminal and the eNodeB, allocate radio resources, and send related signaling.
Specifically, when the terminal is in a standby state, the terminal wakes up according to an eDRX cycle, enters a first paging time window, monitors a downlink control channel for paging related data during the first paging time window, and attempts to establish an RRC connection with the network, thereby responding to network paging.
If the terminal fails to establish RRC connection with the network within the period of the first paging time window, starting a timer and entering a second paging time window; the terminal repeats the operation of the first paging time window in the second paging time window, i.e. monitors the paging channel and tries to establish an RRC connection with the network.
In some embodiments, the step S3 includes:
and if the terminal establishes link connection with the network successfully in the first paging time window, determining that the paging response of the terminal to the network is successful, and receiving network downlink data.
The paging response means that the terminal establishes RRC connection with the network after receiving a page from the network, and transmits a paging response message (PAGRES) to the network through an independent control channel (SDCCH). The network downlink data refers to data that needs to be downloaded from a network, and specific downlink data is generally a data packet, for example: voice data packets, etc.
Specifically, if the terminal successfully establishes the RRC connection with the network within the first paging time window, a paging response message is sent to the network, that is, it is determined that the terminal successfully responds to the network with paging, and the terminal starts to receive a downlink data packet sent by the network and does not enter the second paging time window.
In some embodiments, the step S3 includes:
if the link connection between the terminal and the network fails to be established in the first paging time window and the link connection between the terminal and the network succeeds in the second paging time window, the paging response to the network is determined to be successful, and the network downlink data is received.
Specifically, if the terminal successfully establishes the RRC connection with the network within the second paging time window, a paging response message is sent to the network, that is, it is determined that the paging response of the terminal to the network is successful, and then the terminal starts to receive a downlink data packet sent by the network.
Therefore, by adding one paging time window in the eDRX period, the terminal tries to establish link with the network in the first paging time window, and if the link fails, the terminal enters the second paging time window to try to establish link with the network again, so that the number of trying times of establishing link between the terminal and the network is increased, and the probability of responding to network paging by the terminal is improved.
In an embodiment, the step S23 includes:
and the network starts a timer and configures timing duration for the timer, wherein the timing duration is used for defining the duration of a second paging time window.
After the terminal and the network negotiate to be consistent, the network configures a Timer (Timer) for the terminal and configures specific paging parameters for the Timer, wherein the parameters include paging window num and the like; the timer is used for defining the duration of the second paging time window and searching the second paging time window or counting the time used by the second paging time window at the later stage.
Specifically, when the terminal fails to establish RRC connection with the network within a first paging time window, the network configures a timer for the terminal after the terminal negotiates with the network; and the time length of the timer is used for limiting the time length of the second paging time window, the timing time length of the timer is equal to the time length of the first paging time window, namely the time is calculated by the timer from the time when the timer enters the second paging time window, and the second paging time window is controlled to be ended when the timing time length is equal to the first paging time window.
In other embodiments, the timing duration of the timer may be greater than the duration of the first paging time window or less than the duration of the first paging time window, so as to more flexibly and conveniently control the duration of the second paging time window.
In some embodiments, before the step S1, the method further includes:
the terminal sends the network access parameters to the network as reference, and receives the paging parameters of the first paging time window or the second paging time window finally configured by the network, wherein the network access parameters at least comprise the paging parameters.
The network access parameters comprise access point parameters, paging parameters, APN, IMSI and the like. The paging parameters include an eDRX cycle length, a paging time window length, and the like.
Specifically, after the terminal is started, the access parameters can be sent to the network through Attach request/TAU request messages to inform the network of the paging parameter configuration that the terminal can support and the expected paging parameter configuration, but the finally used paging parameters are determined by the network configuration;
after receiving network access parameters reported by different terminals, the network refers to paging parameters reported by each terminal, configures different paging parameter values for different terminals, and sends the paging parameter values to each terminal along with Attach accept/TAU accept messages;
and after receiving the Attach accept/TAU accept message sent by the network, the terminal acquires and calculates the paging parameter which is finally determined to be configured by the network.
In some embodiments, the paging parameters finally configured by the network include a paging cycle and a number of retransmissions of a physical downlink control channel for paging in the first paging time window or the second paging time window.
Specifically, the paging parameter includes a paging cycle (paging cycle) and a physical downlink control channel retransmission number (pdcchRepN); generally, by adjusting the paging cycle and the number of times of physical downlink control channel retransmission, the probability of the terminal responding to the network paging can be changed.
In some embodiments, the paging cycle is 2.56s and the number of physical downlink control channel retransmissions is 128.
The test can obtain that: the response probability of network paging can be improved by reducing the paging cycle and increasing the retransmission times of the physical downlink control channel; specifically, when the paging cycle (paging cycle) is 2.56s and the number of physical downlink control channel retransmissions (pdcchRepN) is 128, the success rate of the terminal responding to the network paging is the highest, so that the group of parameters is configured as the optimal paging parameter.
In some embodiments, the terminal stores the network access parameters and the paging parameters configured by the network final decision in the storage module.
In addition, after the terminal establishes RRC connection with the network, downlink data acquired from the network is also stored in the storage module.
The method of improving the probability of page response provided by the present invention may be implemented in hardware, firmware, or as software or computer code that may be stored in a computer readable storage medium such as a CD, ROM, RAM, floppy disk, hard disk, or magneto-optical disk, or as computer code that is originally stored on a remote recording medium or a non-transitory machine readable medium, downloaded over a network, and stored in a local recording medium, so that the method of improving the probability of page response described herein may be presented using a general purpose computer or special purpose processor, or in programmable or dedicated hardware such as an ASIC or FPGA as software stored on a recording medium. As can be appreciated in the art, the computer, processor, microprocessor, controller or programmable hardware includes a memory component, e.g., RAM, ROM, flash memory, etc., that can store or receive software or computer code when the software or computer code is accessed and executed by the computer, processor or hardware implementing the method of improving page response probability described herein. In addition, when a general-purpose computer accesses code for implementing the processing shown herein, execution of the code transforms the general-purpose computer into a special-purpose computer for performing the processing shown herein.
The computer readable storage medium may be a solid state memory, a memory card, an optical disc, etc. The computer readable storage medium stores program instructions for the computer to invoke and then execute the method for improving the paging response probability shown in fig. 1 to 3.
Referring to fig. 4, fig. 4 is a block diagram illustrating a system 100 for improving the probability of page response according to an embodiment of the present invention.
As shown in fig. 4, the system 100 for improving the paging response probability is configured to improve the paging response probability in the eDRX cycle of the NB network, and the system includes:
a window establishing module 10, configured to establish a first paging time window and a second paging time window in an eDRX cycle;
a link establishing module 20, configured to monitor a network paging channel in a first paging time window and a second paging time window in sequence when entering an eDRX cycle, and attempt to establish link connection with a network;
the data receiving module 30 is configured to receive network downlink data when a link connection with the network is successfully established in the first paging time window or the second paging time window.
Referring to fig. 5, fig. 5 is a block diagram illustrating the link establishment module 20 shown in fig. 4.
As shown in fig. 5, in some embodiments, the link establishing module 20 further includes:
a first paging module 21, configured to monitor a paging channel in a first paging time window and attempt to establish a link connection with a network when entering an eDRX cycle;
a timer module 23, configured to start a timer to time if the terminal fails to establish link connection with the network in the first paging time window;
and a second paging module 25, configured to monitor the paging channel during the second paging time window and attempt to establish a link connection with the network.
Specifically, when the terminal is in a standby state, the terminal wakes up according to an eDRX cycle, enters a first paging time window, monitors a downlink control channel for paging related data during the first paging time window, and attempts to establish an RRC connection with the network, thereby responding to network paging.
If the terminal fails to establish RRC connection with the network within the period of the first paging time window, starting a timer and entering a second paging time window; the terminal repeats the operation of the first paging time window in the second paging time window, i.e. monitors the paging channel and tries to establish an RRC connection with the network.
In some embodiments, the timer module 23 is configured to calculate the time of the second paging time window after the network starts the timer and configures the related paging parameters.
Specifically, when the terminal fails to establish RRC connection with the network within the first paging time window, after negotiation between the terminal and the network, the network configures a timer for the terminal, and starts to calculate the time used when entering the second paging time window.
In some embodiments, the system 100 for improving the probability of page response further comprises:
and the parameter configuration module is used for sending the network access parameters to the network as reference and receiving the paging parameters of the first paging time window or the second paging time window which are finally configured by the network, wherein the network access parameters at least comprise the paging parameters.
Specifically, after the terminal is started, the access parameters can be sent to the network through Attach request/TAU request messages to inform the network of paging parameter configuration that the terminal can support and expected paging parameter configuration, but the finally used paging parameters are determined by network configuration;
after receiving network access parameters reported by different terminals, the network refers to paging parameters reported by each terminal, configures different paging parameter values for different terminals, and sends the paging parameter values to each terminal along with Attach accept/TAU accept messages;
and after receiving the Attach accept/TAU accept message sent by the network, the terminal acquires and calculates the paging parameter which is finally determined to be configured by the network.
In some embodiments, the finally configured paging parameters of the network include a paging cycle and a number of retransmissions of a physical downlink control channel for paging in the first paging time window or the second paging time window.
Specifically, the paging parameter includes a paging cycle (paging cycle) and a physical downlink control channel retransmission number (pdcchRepN); generally, the probability of the terminal responding to the network paging can be changed by adjusting the paging cycle and the retransmission times of the physical downlink control channel.
The test can conclude that: the response probability of network paging can be improved by reducing the paging cycle and increasing the retransmission times of the physical downlink control channel; specifically, when the paging cycle (paging cycle) in the paging parameters is 2.56s and the number of physical downlink control channel retransmissions (pdcchRepN) is 128, the success rate of the terminal responding to the network paging is the highest, so the parameters are configured as the optimal paging parameters.
In some embodiments, the terminal stores the network entry parameters and the paging parameters configured by the network final decision in the storage module 40.
In addition, after the terminal establishes RRC connection with the network, the downlink data acquired from the network is also stored in the storage module 40.
The system 100 for improving the page response probability provided by the present invention uses the aforementioned method for improving the page response probability, and the functions performed by the system 100 for improving the page response probability correspond to the steps of the method for improving the page response probability, and more specific description can refer to the related contents of the aforementioned method for improving the page response probability.
The memory module 40 may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), a plurality of magnetic disk storage devices, a Flash memory device, or other volatile solid state storage devices.
The terminal includes a Central Processing Unit (CPU), and may also be other general purpose processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), Field Programmable Gate Arrays (FPGA) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and so on. The general purpose processor may be a microprocessor or the processor may be any conventional processor, etc., and the processing unit is a data processing center of the system for improving the probability of page response 100, and various modules of the whole system for improving the probability of page response 100 are connected by wire or wireless lines. For processing the data transmitted by each module.
In some embodiments, the system 100 for improving the paging response probability may be a hardware module and/or a software module disposed in a terminal, and the window establishing module 10, the link establishing module 20, the data receiving module 30, the storage module 40, and the like are disposed in the terminal; the window establishing module 10 is connected to the link establishing module 20, and can try to establish a link connection with a network in time after the first paging time window and the second paging time window are established; the link establishing module 20 is connected to the data receiving module 30, and is configured to receive network downlink data in time after a terminal establishes link connection with a network in a first paging time window or a second paging time; the data receiving module 30 is connected to the storage module 40, and can store the network downlink data in the storage module 40 after the terminal receives the network downlink data, so that the user can check the network downlink data conveniently.
In the link establishing module 20, the timer module 23 is connected to the first paging module 21 and the second paging module 25, respectively, and when the link connection between the first paging module 21 and the network fails, the timer module 23 and the second paging module 25 can be started in time to continue to attempt to establish a link connection with the network.
Besides, the parameter configuration module is also arranged in the host device, and is connected with the first paging module 21, the second paging module 25, the storage module 40 and the timer module 23; when the terminal is started, the parameter configuration module can receive the paging parameters finally configured by the network and store the paging parameters in the storage module 40, and the paging parameters are analyzed and then sent to the first paging module 21, the second paging module 25 and the timer module 23, so that the first paging module 21, the second paging module 25 and the timer module 23 execute the operation of responding to paging according to the paging parameters.
Therefore, the method and the system for improving the paging response probability provided by the invention have the advantages that the terminal tries to establish link with the network in the first paging time window and the second paging time window in sequence by adding the paging time window in the eDRX period and matching the timer for the paging time window, and can receive network downlink data when the link establishment in any one paging time window is successful, so that the probability of the terminal responding to network paging is improved.
The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and embellishments may be made by those skilled in the art without departing from the principle of the embodiments of the present invention, and these modifications and embellishments are also considered to be within the scope of the present invention.
Claims (6)
1. A method for improving paging response probability in an eDRX period of an NB network, the method comprising:
step S1: establishing a first paging time window and a second paging time window in one eDRX period;
step S2: when entering an eDRX period, monitoring a network paging channel in a first paging time window and a second paging time window in sequence, and trying to establish link connection with a network;
step S3: when the link connection with the network is successfully established in the first paging time window or the second paging time window, receiving network downlink data;
wherein, step S2 includes:
step S21, when entering into eDRX period, monitoring paging channel in the first paging time window and trying to establish link connection with network;
step S23, if the link connection between the terminal and the network fails in the first paging time window, starting a timer to time and configuring a timing duration for the timer, wherein the timing duration is used for defining the duration of a second paging time window;
and step S25, entering a second paging time window while starting the timer, monitoring the paging channel in the second paging time window by the terminal, and trying to establish link connection with the network.
2. The method of claim 1, wherein the step S3 includes: if the link connection with the network is successfully established in the first paging time window, determining that the paging response to the network is successful, and receiving network downlink data; if the link connection between the terminal and the network fails to be established in the first paging time window and the link connection between the terminal and the network succeeds in the second paging time window, the paging response to the network is determined to be successful, and the network downlink data is received.
3. The method for increasing the probability of page response of claim 1, wherein said step S1 is preceded by the steps of:
and sending the network access parameters to the network as reference, and receiving the paging parameters of a first paging time window or a second paging time window finally configured by the network, wherein the network access parameters at least comprise the paging parameters.
4. The method of claim 3, wherein the paging parameters finally configured by the network include a paging cycle and a number of physical downlink control channel retransmissions for paging in the first paging time window or the second paging time window.
5. A system for increasing page response probability in an eDRX cycle of an NB network, the system comprising:
a window establishing module, configured to establish a first paging time window and a second paging time window within an eDRX cycle;
a link establishing module, configured to monitor a network paging channel in a first paging time window and a second paging time window in sequence when entering an eDRX cycle, and attempt to establish a link connection with a network;
the data receiving module is used for receiving network downlink data when the link connection with the network is successfully established in the first paging time window or the second paging time window;
wherein the link establishing module further comprises:
the first paging module is used for monitoring a paging channel in a first paging time window and trying to establish link connection with a network when entering an eDRX period;
the timer module is used for starting a timer to time in the first paging time window if the link connection with the network is failed to be established, and calculating the time of a second paging time window after configuring relevant paging parameters;
and the second paging module is used for monitoring the paging channel in a second paging time window and trying to establish link connection with the network.
6. The system for increasing the probability of page response of claim 5, wherein the system for increasing the probability of page response further comprises:
the parameter configuration module is used for sending the network access parameters to the network as reference and receiving the paging parameters of a first paging time window or a second paging time window finally configured by the network, wherein the network access parameters at least comprise the paging parameters;
the paging parameters finally configured by the network include a paging cycle and a physical downlink control channel retransmission number for paging in a first paging time window or a second paging time window.
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