CN109963269B

CN109963269B - Enhanced discontinuous reception function synchronization method, device and system

Info

Publication number: CN109963269B
Application number: CN201711399541.6A
Authority: CN
Inventors: 张志荣; 李志军; 李艳芬; 张光辉; 朱雪田
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2017-12-22
Filing date: 2017-12-22
Publication date: 2022-03-18
Anticipated expiration: 2037-12-22
Also published as: CN109963269A

Abstract

The invention discloses a method, a device and a system for synchronizing an enhanced discontinuous reception function. The system comprises a base station, a user terminal and a mobile management function node, wherein the base station sets an eDRX state to be an eDRX transition state under the condition that an eDRX parameter is changed; the base station waits for a paging message sent by a next mobility management function node according to the original eDRX parameter mode and forwards the paging message to the user terminal; the base station changes the eDRX state according to the changed eDRX parameters; the base station informs the eDRX state change of the mobile management function node and the user terminal; the base station sends an eDRX negotiation request message to the user terminal so that the user terminal and the mobile management function node can carry out eDRX negotiation and change the eDRX state. The invention can ensure the consistency of eDRX states among UE, eNB and MME, thereby ensuring the correctness of paging the eMTC UE by the MME.

Description

Enhanced discontinuous reception function synchronization method, device and system

Technical Field

The invention relates to the field of Internet of things, in particular to an enhanced discontinuous reception function synchronization method, device and system.

Background

The number of connections of the internet of things terminal in 2020 is predicted to reach 50 hundred million. Operators urgently need to develop new service growth points to deal with the increasingly saturated situation of traditional person-to-person communication, and the internet of things becomes a research hotspot in recent years.

At present, the 3GPP standard adopts cellular network to carry NB-IoT (Narrow Band Internet of Things) and eMTC (enhanced Machine Type Communication) services, but the difference between the service carried by the conventional cellular network and the NB-IoT and eMTC services is relatively large. Therefore, the cellular network needs to be correspondingly enhanced and optimized in function so as to better meet the application requirements of the internet of things.

CIoT (Cellular Internet of Things) includes NB-IoT, eMTC, and the like.

NB-IoT and eMTC terminals require low Power consumption, and an eDRX (extended/enhanced Discontinuous Reception) Power saving technology and a PSM (Power Save Mode, energy saving Mode or Power saving Mode) are introduced to further reduce Power consumption and prolong battery service time. 1) In a PSM state, deep sleep is carried out, the terminal of the Internet of things is still registered in the network, but signaling is not accessible, paging information and downlink data are not received, and cell reselection cannot be carried out. 2) When the eDRX function is started in an IDLE state, the paging device sleeps shallowly and can receive paging after the paging device starts up every 2.56 s-2.92 h period.

At present, the Mobility Management Entity (MME) and the User Equipment (UE) eDRX are not synchronized due to activation and deactivation of eDRX by the 3GPP for the eMTC base station, and there is no effective solution to this problem at present.

Disclosure of Invention

In view of the above technical problems, the present invention provides a synchronization method, apparatus and system for enhanced discontinuous reception (eDRX) function, which can ensure consistency of eDRX states among a UE, an eNB (base station), and an MME.

According to an aspect of the present invention, there is provided an enhanced discontinuous reception function synchronization method, including:

under the condition that the eDRX parameters of the enhanced discontinuous reception (eDRX) are changed, the base station sets the eDRX state to be an eDRX transition state;

the base station waits for a paging message sent by a next mobility management function node according to the original eDRX parameter mode and forwards the paging message to the user terminal;

the base station changes the eDRX state according to the changed eDRX parameters;

the base station informs the eDRX state change of the mobile management function node and the user terminal;

the base station sends an eDRX negotiation request message to the user terminal so that the user terminal and the mobile management function node can carry out eDRX negotiation and change the eDRX state.

In an embodiment of the present invention, the enhanced discontinuous reception function synchronization method further includes:

under the conditions of starting up, network selection and random access of a user terminal, a base station sends an eDRX setting message to the user terminal so that the user terminal sends an attachment request to a mobile management function node, carries out eDRX negotiation with the mobile management function node, finishes attachment and starts a paging mode after negotiation;

the base station determines whether the eDRX parameter is changed.

In one embodiment of the present invention, the eDRX state of the base station includes an eDRX on state, an eDRX off state, and an eDRX transition state;

the eDRX states of the mobility management function node and the user terminal include an eDRX on state and an eDRX off state.

the method comprises the steps that when a user terminal finishes attachment at a source base station, the user terminal finishes eDRX negotiation with a mobile management function node, the user terminal reselects or is switched to a target base station, the target base station sends an eDRX state message to the user terminal, wherein eDRX states of the source base station and the target base station are different;

the target base station sends an eDRX state message to the mobile management function node;

the target base station sends an eDRX negotiation request message to the user terminal;

the target base station sends an eDRX negotiation request message to the user terminal so that the user terminal and the mobile management function node can conveniently carry out eDRX negotiation and change the eDRX state.

According to another aspect of the present invention, there is provided an enhanced drx synchronization method, including:

after the target base station communicates with the source base station, the source base station knows that the eDRX state of the target base station is changed; and then executing the step that the target base station sends the eDRX state message to the mobile management function node.

In one embodiment of the present invention, the eDRX parameters include an eDRX on-state parameter and an eDRX off-state parameter;

the eDRX state includes an eDRX on state, an eDRX off state, and an eDRX transition state.

According to another aspect of the present invention, there is provided a base station comprising:

a state change controller for setting the eDRX state to an eDRX transition state when the eDRX parameters for enhanced discontinuous reception are changed; waiting for a paging message sent by a next mobility management function node according to the original eDRX parameter mode, and forwarding the paging message to a user terminal; changing the eDRX state according to the changed eDRX parameters;

a state notification module for notifying the mobility management function node and the eDRX state change of the user terminal;

a negotiation request sending module, configured to send an eDRX negotiation request message to the user terminal, so that the user terminal and the mobility management function node perform eDRX negotiation and change an eDRX state.

In one embodiment of the present invention, the base station is configured to perform an operation for implementing the synchronization method of the enhanced discontinuous reception function according to any one of the above embodiments.

a memory to store instructions;

a processor configured to execute the instructions to enable the base station to perform operations for implementing the synchronization method of the enhanced discontinuous reception function according to any of the embodiments.

According to another aspect of the present invention, there is provided a user terminal comprising:

a change message receiving module, configured to receive an eDRX state change message sent by a base station, where the base station sets an eDRX state to an eDRX transition state when an eDRX parameter of the enhanced drx discontinuous reception is changed; waiting for a paging message sent by a next mobility management function node according to the original eDRX parameter mode, and forwarding the paging message to a user terminal; changing the eDRX state according to the changed eDRX parameters; sending an eDRX state change message to a base station mobility management function node and a user terminal;

a negotiation request receiving module, configured to receive an eDRX negotiation request message sent by a base station;

and the negotiation module is used for carrying out eDRX negotiation with the mobile management function node and changing the eDRX state.

In an embodiment of the present invention, the change message receiving module is further configured to receive an eDRX status message sent by the destination base station in a process that the user terminal has completed attachment at the source base station, the user terminal completes eDRX negotiation with the mobility management function node, the user terminal reselects or switches to the destination base station, where eDRX statuses of the source base station and the destination base station are different;

the negotiation request receiving module is also used for receiving an eDRX negotiation request message sent by the target base station;

the negotiation module is also used for carrying out eDRX negotiation with the mobile management function node and changing the eDRX state.

a change message receiving module, configured to receive an eDRX status message sent by a target base station in a process that a user terminal completes attachment at a source base station, the user terminal completes eDRX negotiation with a mobility management function node in an enhanced discontinuous reception (eDRX), and the user terminal reselects or switches to the target base station, where eDRX statuses of the source base station and the target base station are different;

a negotiation request receiving module, configured to receive an eDRX negotiation request message sent by a target base station;

According to another aspect of the present invention, there is provided a mobility management function node, comprising:

a state message receiving module, configured to receive an eDRX state change message sent by a base station, where the base station sets an eDRX state to an eDRX transition state when an eDRX parameter of the enhanced drx discontinuous reception is changed; waiting for a paging message sent by a next mobility management function node according to the original eDRX parameter mode, and forwarding the paging message to a user terminal; changing the eDRX state according to the changed eDRX parameters; sending an eDRX state change message to a base station mobility management function node and a user terminal;

and the state negotiation module is used for carrying out eDRX negotiation with the mobile terminal after the base station sends an eDRX negotiation request message to the user terminal, and changing the eDRX state.

In an embodiment of the present invention, the status message receiving module is further configured to receive an eDRX status message sent by the destination base station in a process that the user terminal has completed attachment at the source base station, the user terminal completes eDRX negotiation with the mobility management function node, the user terminal reselects or switches to the destination base station, where eDRX statuses of the source base station and the destination base station are different;

the state negotiation module is further configured to perform eDRX negotiation with the mobile terminal after the destination base station sends an eDRX negotiation request message to the user terminal, and change an eDRX state.

a status message receiving module, configured to receive an eDRX status message sent by a target base station in a process that a user terminal completes attachment at a source base station, the user terminal completes eDRX negotiation with a mobility management function node in an enhanced discontinuous reception (eDRX), and the user terminal reselects or switches to the target base station, where eDRX statuses of the source base station and the target base station are different;

and the state negotiation module is used for carrying out eDRX negotiation with the mobile terminal after the target base station sends an eDRX negotiation request message to the user terminal, and changing the eDRX state.

According to another aspect of the present invention, there is provided an enhanced drx synchronization system, comprising the base station according to any of the above embodiments, the user terminal according to any of the above embodiments, and the mobility management function node according to any of the above embodiments.

In one embodiment of the present invention, the base station includes a source base station and a destination base station, wherein:

the source base station is used for knowing that the eDRX state of the target base station changes after communicating with the target base station, wherein the user terminal reselects or switches to the target base station after the source base station finishes attachment and finishes eDRX negotiation with the mobile management function node;

the objective base station is used for executing the operation of implementing the synchronization method of the enhanced discontinuous reception function according to any embodiment.

According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions which, when executed by a processor, implement the enhanced discontinuous reception function synchronization method according to any one of the embodiments.

The invention ensures the consistency of eDRX states among UE, eNB and MME by adding the eDRX change notification message and the eDRX capability renegotiation method and process, thereby ensuring the correctness of paging the eMTC UE by the MME, improving the timely responsiveness and the service continuity of the system and improving the user experience.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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 invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of an embodiment of activating and deactivating eDRX by an eMTC base station in a conventional scheme.

FIG. 2 is a diagram of an enhanced DRX synchronization system according to an embodiment of the present invention.

Fig. 3 is a diagram illustrating an enhanced drx synchronization method according to an embodiment of the present invention.

FIG. 4 is a diagram of an enhanced DRX synchronization method according to another embodiment of the present invention.

FIG. 5 is a diagram illustrating an enhanced DRX synchronization method according to another embodiment of the present invention.

FIG. 6 is a diagram of an enhanced DRX synchronization system according to an embodiment of the present invention.

FIG. 7 is a diagram illustrating an enhanced DRX synchronization method according to another embodiment of the present invention.

FIG. 8 is a diagram illustrating an enhanced DRX synchronization method according to another embodiment of the present invention.

Fig. 9 is a diagram illustrating a base station according to an embodiment of the present invention.

Fig. 10 is a diagram illustrating a base station according to another embodiment of the present invention.

Fig. 11 is a diagram illustrating an embodiment of a ue according to the present invention.

Fig. 12 is a diagram illustrating a ue according to another embodiment of the present invention.

Fig. 13 is a diagram illustrating a mobility management function node according to an embodiment of the present invention.

Fig. 14 is a diagram illustrating a mobility management function node according to another embodiment of the present invention.

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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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 invention 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.

The application finds that: the eMTC terminal is in a shallow sleep state when the eDRX function is started in an IDLE state, and can receive paging messages sent by an eMTC MME/eNB every 2.56 s-2.92 h period, so that the aim of saving power of the eMTC terminal can be fulfilled. But instead. Sometimes, the eMTC eNB eDRX parameter or setting changes, different eMTC eDRX parameters or settings are different, when an eMTC terminal moves and reselects or switches among different eDRX parameters or set eMTC eNBs, inconsistency of eDRX states among UE, eNB and MME occurs, and the paging failure problem of the eMTC UE by the MME is caused.

The applicant specifically describes the problem of uncertainty (inconsistency) of eDRX states between an MME and a UE caused by activation and deactivation of eDRX by an eMTC base station, as follows:

1. Assuming that an eMTC base station originally Opens (ON) with eDRX, the UE starts to select a network and randomly accesses to the eNB, and then the eNB sends a system message SIB1-BR, wherein the SIB1-BR carries the eDRX-ON information.

2. After the UE receives the SIB1-BR, the UE turns on eDRX.

3. UE initiates an Attach request to MME; UE and MME negotiate eDRX capability, and the negotiation result is that both MME and UE open eDRX; and the MME performs eDRX paging on the UE.

4. Due to certain requirements, the eNB turns eDRX off; then there is an uncertainty:

1) the eNB sends a system message SIB1-BR, wherein the SIB1-BR carries eDRX (eDRX OFF information), but the UE may be in an eDRX dormant period and cannot guarantee that the SIB1-BR message can be received;

2) even if the UE receives the SIB1-BR message, the UE does not know how to set the eDRX state (ON or OFF).

a) If the UE sets eDRX state ON, the MME still sends eDRX Paging to the eNB as a result of previous negotiation, that is, in an eDRX ON manner, but the eDRX of the eNB is off, the eNB cannot send eDRX Paging, and the UE receives Paging in the eDRX manner, which causes an eDRX Paging timing problem.

b) If the UE sets eDRX status to off, the MME still sends eDRX Paging to the eNB as a result of the previous negotiation, that is, the eDRX Paging is sent to the eNB in eDRX ON mode, but eDRX of the eNB is off, the eNB cannot send eDRX Paging, and turns to Normal Paging but with eDRX cycle, the UE receives Paging in Normal mode, causing a problem in the Normal Paging cycle.

5. Because eDRX states between UE/MME are inconsistent, paging errors occur, eMTC UE cannot be awakened in time, service data loss or service interruption is caused, and user experience is seriously influenced.

The invention provides a method, a device and a system for synchronizing an enhanced discontinuous reception function, which aim at the problem that paging of eMTC (enhanced multimedia broadcast/multicast control) UE by an MME (enhanced mobile station) is failed due to inconsistency of eDRX (enhanced discontinuous reception) states among the UE, the eNB and the MME. The present invention will be explained below by way of specific examples.

FIG. 2 is a diagram of an enhanced DRX synchronization system according to an embodiment of the present invention. As shown in fig. 2, the enhanced discontinuous reception function synchronization system may include a base station (eNB)1, a user terminal (UE)2, and a mobile management function node (MME)3, wherein:

and the base station 1 is configured to, when the eDRX state of the eNB changes, not take effect immediately, but increase an eDRX transition state (for example, ON- > OFF transition state), during the eDRX transition state, the eNB waits for and forwards the last Paging message in the original mode sent by the MME, and the UE receives a page (Paging) in the original mode.

Afterwards, the base station 1 is further configured to actually change the eDRX status of itself; meanwhile, the eNB informs the UE of the eDRX status change (the UE eDRX status changes) through a system message SIB1-BR (carrying eDRX information); the eNB also informs the MME3 of the eDRX status change (with which the MME eDRX status changes) via a new S1 message.

The eNB1 is then also configured to send an eDRX negotiation request to the UE 2.

The UE2 is configured to initiate eDRX negotiation to the MME after receiving the request, and after the eDRX negotiation is completed, the MME3 sends a Paging message to the UE2 according to the changed mode, so that consistency of eDRX states among the UE, the eNB, and the MME is ensured.

In an embodiment of the present invention, the user terminal 2 may be an eMTC terminal.

Based on the enhanced discontinuous reception function synchronization system provided by the above embodiment of the present invention, the synchronization of activation and deactivation of the eMTC eDRX function can be ensured. The embodiment of the invention takes charge of the eDRX state change of the eNB through the newly added eDRX state change controller; the eNB ensures eDRX state consistency among the UE, the eNB and the MME by newly adding an eDRX transition state; the eNB informs the MME of the eDRX state change by adding an S1 message; the eNB sends an eDRX negotiation request to the UE through a newly added RRC message; the UE initiates the eDRX negotiation message again to the MME.

Therefore, the embodiment of the invention improves the real-time property of the eDRX state change and ensures the timely response, flexibility and robustness of the system; the embodiment of the invention also improves the service continuity of the Internet of things and improves the user experience.

Fig. 3 is a diagram illustrating an enhanced drx synchronization method according to an embodiment of the present invention. Preferably, this embodiment can be performed by the enhanced drx synchronization system of the present invention. The method comprises the following steps:

step 301, the eMTC terminal starts up network selection, random access, attach request, eDRX negotiation (ON), attach completion, and paging after negotiation.

Step 302, the eDRX parameter setting of the base station side is changed. If the eDRX parameter setting is not changed, go to step 303; otherwise, if the eDRX parameter is set to be changed, go to step 304.

Step 303, entering an eDRX paging state; thereafter, the other steps of the present embodiment are not performed.

In step 304, eNB eDRX is set to Middle, that is, eDRX is in a transition state (new addition).

In one embodiment of the present invention, the eDRX parameters include an eDRX on-state parameter, an eDRX off-state parameter, and an eDRX transition state parameter.

In one embodiment of the present invention, the eDRX state of the base station 1 includes an eDRX on state, an eDRX off state, and an eDRX transition state.

In one embodiment of the present invention, the eDRX states of the mobility management function node 3 and the user terminal 2 include an eDRX on state and an eDRX off state.

Step 305, the eNB waits for an eDRX page to wake up the UE; the UE receives the page in the original manner.

In step 306, eNB eDRX is set to OFF.

In an embodiment of the present invention, the base station adds an eDRX state change controller, which is specifically responsible for eNB eDRX state changes, such as an eDRX on state, an eDRX off state, and an eDRX transition state. And the eDRX state change controller is used for making a state change decision according to whether the original mode Paging is performed for the last time, controlling the eDRX state of the eNB to change and simultaneously notifying the UE and the MME.

Step 307, the eNB sends a system message SIB1-BR to the UE, where the SIB1-BR carries eDRX-OFF information;

in step 308, the eNB sends an S1 message (new addition) to the MME, carrying eDRX ═ OFF information.

In an embodiment of the present invention, the eNB adds an eDRX setting change message, and the eNB may specifically notify the MME of the eDRX state change through an addition S1 message.

In step 309, the eNB sends an eDRX negotiation request message to the UE.

In an embodiment of the present invention, the eNB adds an eDRX negotiation request message, and the eNB may specifically send the eDRX negotiation request to the UE through an added RRC (Radio Resource Control) message.

In step 310, the UE and the MME start eDRX negotiation procedure, and the negotiation result is eDRX OFF.

In an embodiment of the present invention, the UE adds an eDRX renegotiation message, and the UE initiates an eDRX negotiation message to the MME again.

Step 311, entering a Normal paging state; completing the eDRX state real-time change.

Based on the enhanced discontinuous reception function synchronization method provided by the embodiment of the invention, the method has stronger pertinence in the current standardization formulation and improvement process of the cellular Internet of things; the embodiment of the invention effectively solves the inconsistency of eDRX states among UE, eNB and MME, and gives consideration to timeliness and reliability; the embodiment of the invention is flexible and convenient, and is convenient for operation and maintenance; the embodiment of the invention has almost no influence on the terminal, and has good backward compatibility and deployment feasibility; the embodiment of the invention is enhanced on the existing protocol without introducing a new protocol process, and the embodiment of the invention has lower implementation complexity and is easy to realize a system.

The above embodiments of the present invention are explained below by way of specific examples.

FIG. 4 is a diagram of an enhanced DRX synchronization method according to another embodiment of the present invention. Preferably, this embodiment can be performed by the enhanced drx synchronization system of the present invention. In the embodiment of fig. 4, the serving base station eDRX setting is changed from ON to OFF, as shown in fig. 4, the method may include the steps of:

step 401, the eMTC terminal starts up network selection, random access, attach request, eDRX negotiation (ON), attach completion, and paging mode after negotiation.

In step 402, when the eDRX parameter setting ON the base station side is changed (for example, eDRX is changed from ON to OFF), the base station sets eNB eDRX to Middle, that is, eDRX is in a transition state.

Step 403, the eNB waits for an eDRX page to wake up the UE; the UE receives the page in the original manner.

In step 404, eNB eDRX is set to OFF.

In step 405, the eNB sends an S1 message to the MME, carrying eDRX ═ OFF information.

In step 406, the eNB sends a system message SIB1-BR to the UE, where the SIB1-BR carries eDRX-OFF information.

In step 407, after the UE receives the eDRX-OFF information, the eDRX status of the UE changes accordingly.

In step 408, the eNB sends an eDRX negotiation request message to the UE.

In step 409, the UE and the MME start eDRX negotiation process, and the negotiation result is eDRX OFF.

Step 410, enter Normal paging state.

In one embodiment of the present invention, the order of step 405 and step 406 may be reversed; step 405 and step 406 may also be performed simultaneously.

FIG. 5 is a diagram illustrating an enhanced DRX synchronization method according to another embodiment of the present invention. Preferably, this embodiment can be performed by the enhanced drx synchronization system of the present invention. In the embodiment of fig. 5, the serving base station eDRX setting is changed from OFF to ON, as shown in fig. 5, the method may include the steps of:

step 501, the eMTC terminal starts up network selection, random access, attach request, eDRX negotiation (OFF), attach completion, and paging after negotiation.

Step 502, the eDRX parameter setting of the base station side is changed, and the eDRX is changed from OFF to ON.

In step 503, eNB eDRX is set to Middle, that is, eDRX is in a transition state.

In step 504, the eNB waits for an eDRX page to wake up the UE.

Step 505, eNB eDRX is set ON.

In step 506, the eNB sends a system message SIB1-BR to the UE, where the SIB1-BR carries eDRX ═ ON information.

In step 507, the eNB sends an S1 message to the MME, carrying eDRX ═ ON information.

In step 508, the eNB sends an eDRX negotiation request message to the UE.

In step 509, the UE and the MME start eDRX negotiation procedure, and the negotiation result is eDRX ═ ON.

Step 510, enter eDRX paging state.

The embodiment of the invention ensures the eDRX state consistency among the UE, the eNB and the MME by adding the eDRX change transition state of the eNB and adding the eDRX change notification message and the method for negotiating the eDRX capacity again. The embodiment of the invention improves the real-time property of the eDRX state change and ensures the timely response, flexibility and robustness of the system; the embodiment of the invention also improves the service continuity of the Internet of things and improves the user experience.

FIG. 6 is a diagram of an enhanced DRX synchronization system according to an embodiment of the present invention. As shown in fig. 2, the enhanced discontinuous reception function synchronization system may include a source base station 11, a destination base station 12, a User Equipment (UE)2, and a mobile management function node (MME)3, wherein:

the user terminal 2 reselects or hands over from the source base station 11 to the destination base station 12.

A user terminal 2 configured to complete eDRX negotiation (eDRX ON) between an attach and an MME at a source base station (eDRX ON); when the ue2 reselects or switches to the target base station (eDRX is OFF), the target base station needs to receive a system message SIB1-BR sent by the target base station during the reselection or the handover, and the SIB1-BR carries eDRX information.

The source base station 11 is configured to know that the destination base station eDRX is changed after communicating with the destination base station 12.

The destination base station 12 is configured to send an S1 message to the MME, where the message carries eDRX ═ OFF information; and sends an eDRX negotiation request message to the UE.

The user terminal 2 is further configured to start an eDRX negotiation process with the MME, and the negotiation result is eDRX is OFF; after the ue2 reselects or switches to the destination base station (eDRX ═ OFF), it enters the Normal paging state.

Based on the enhanced discontinuous reception function synchronization system provided by the above embodiment of the present invention, the synchronization of activation and deactivation of the eMTC eDRX function can be realized when the terminal reselects or switches the base station. In the above embodiment of the present invention, the method for adding the eDRX change notification message and the eDRX capability re-negotiation process is specifically configured to notify the MME of the eDRX state change through the newly added S1 message, the eNB sends the eDRX negotiation request to the UE through the newly added RRC message, and the UE initiates the eDRX negotiation message to the MME again, so as to ensure the eDRX state consistency among the UE, the source base station, the destination base station, and the MME.

Therefore, the embodiment of the invention improves the real-time property of the eDRX state change and ensures the timely responsiveness, flexibility and robustness of the system; the embodiment of the invention also improves the service continuity of the Internet of things and improves the user experience.

FIG. 7 is a diagram illustrating an enhanced DRX synchronization method according to another embodiment of the present invention. Preferably, this embodiment can be performed by the enhanced drx synchronization system of the present invention. In the embodiment of fig. 7, the source base station (eDRX) reselects or switches to the destination base station (eDRX OFF), as shown in fig. 7, the method may include the following steps:

in step 701, the eMTC terminal completes an attach and eDRX negotiation (eDRX ON) of the MME at the source base station (eDRX ON).

In step 702, the eMTC terminal reselects or switches to the target base station (eDRX is OFF), and during the reselection or switching, the target base station needs to receive a system message SIB1-BR sent by the target base station, where the SIB1-BR carries eDRX information.

In step 703, after the source base station communicates with the destination base station, it knows that the eDRX of the destination base station changes, and the destination base station eNB sends an S1 message to the MME, which carries the eDRX information.

Step 704, the target eNB sends an eDRX negotiation request message to the UE.

Step 705, the UE and the MME start eDRX negotiation procedure, and the negotiation result is eDRX OFF.

In step 706, the eMTC terminal enters a Normal paging state after reselecting or switching to the destination base station (eDRX ═ OFF).

In one embodiment of the present invention, the eDRX state may include an eDRX on state, an eDRX off state, and an eDRX transition state.

Based on the enhanced discontinuous reception function synchronization system provided by the above embodiment of the present invention, the synchronization of activation and deactivation of the eMTC eDRX function can be realized when the terminal reselects or switches the base station. The embodiment of the invention ensures the eDRX state consistency among the UE, the source base station, the target base station and the MME by adding the eDRX change notification message and the method for negotiating the eDRX capacity again. The embodiment of the invention improves the real-time property of the eDRX state change and ensures the timely response, flexibility and robustness of the system; the embodiment of the invention also improves the service continuity of the Internet of things and improves the user experience.

FIG. 8 is a diagram illustrating an enhanced DRX synchronization method according to another embodiment of the present invention. Preferably, this embodiment can be performed by the enhanced drx synchronization system of the present invention. In the embodiment of fig. 8, the source base station (eDRX OFF) reselects or switches to the destination base station (eDRX ON), and as shown in fig. 8, the method may include the following steps:

in step 801, the eMTC terminal completes an eDRX negotiation (eDRX OFF) between the attachment and the MME at the source base station (eDRX OFF).

In step 802, the eMTC terminal reselects or switches to a target base station (eDRX ═ ON), and needs to receive a system message SIB1-BR sent by the target base station in the reselection or switching process, where the SIB1-BR carries eDRX ═ ON information.

In step 803, after the source base station communicates with the destination base station, it knows that the eDRX of the destination base station changes, and the destination base station eNB sends an S1 message to the MME, where eDRX is carried as ON information.

Step 804, the target eNB sends an eDRX negotiation request message to the UE.

Step 805, the UE and the MME start eDRX negotiation procedure, and the negotiation result is eDRX ═ ON.

In step 806, the eMTC terminal enters an eDRX paging state after reselecting or switching to the destination base station (eDRX is ON).

The embodiment of the invention has stronger pertinence in the current standardization formulation and improvement process of the cellular Internet of things; the embodiment of the invention effectively solves the inconsistency of eDRX states among UE, eNB and MME, and gives consideration to timeliness and reliability; the embodiment of the invention is flexible and convenient, and is convenient for operation and maintenance; the embodiment of the invention has almost no influence on the terminal, and has good backward compatibility and deployment feasibility; the embodiment of the invention is enhanced on the existing protocol without introducing a new protocol process, and the embodiment of the invention has lower implementation complexity and is easy to realize a system.

According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions, which when executed by a processor, implement the enhanced drx functional synchronization method according to any of the embodiments (e.g., any of fig. 2-5 and 7-8) described above.

Based on the computer readable storage medium provided by the above embodiment of the present invention, the inconsistency of eDRX states among UE, eNB, and MME can be effectively solved, and both timeliness and reliability are considered; the embodiment of the invention is flexible and convenient, and is convenient for operation and maintenance; the embodiment of the invention has almost no influence on the terminal, and has good backward compatibility and deployment feasibility; the embodiment of the invention is enhanced on the existing protocol without introducing a new protocol process, and the embodiment of the invention has lower implementation complexity and is easy to realize a system.

Fig. 9 is a diagram illustrating a base station according to an embodiment of the present invention. As shown in fig. 9, the base station in any of the above embodiments may include a state change controller 101, a state notification module 102, and a negotiation request sending module 103, where:

a state change controller 101, configured to set an eDRX state to an eDRX transition state when an eDRX parameter for enhanced discontinuous reception is changed; waiting for a paging message sent by the next mobility management function node 3 according to the original eDRX parameter mode, and forwarding the paging message to the user terminal 2; and changing the eDRX state according to the changed eDRX parameters.

In one embodiment of the present invention, the state change controller 101 may be implemented as an eDRX state change controller.

A status notification module 102, configured to notify the mobility management function node 3 and the user terminal 2 of the eDRX status change.

A negotiation request sending module 103, configured to send an eDRX negotiation request message to the user terminal 2, so that the user terminal 2 and the mobility management function node 3 perform eDRX negotiation and change an eDRX state.

In an embodiment of the present invention, the base station 1 may be configured to perform operations performed by the base station, the destination base station, and the source base station in the synchronization method for implementing the enhanced discontinuous reception function according to any of the embodiments described above (e.g., any of fig. 2 to fig. 5, and fig. 7 to fig. 8).

Based on the base station provided by the above embodiment of the present invention, the synchronization of activation and deactivation of the eMTC eDRX function can be ensured. The base station of the above embodiment of the present invention is responsible for the change of the eDRX state of the eNB through the newly added eDRX state change controller, and specifically may be configured to make a state change decision according to whether Paging is performed in the last original mode, and control the change of the eDRX state of the eNB; the eNB ensures eDRX state consistency among the UE, the eNB and the MME by newly adding an eDRX transition state; the eNB informs the MME of the eDRX state change by adding an S1 message; and the eNB sends an eDRX negotiation request to the UE through the newly added RRC message.

Fig. 10 is a diagram illustrating a base station according to another embodiment of the present invention. As shown in fig. 10, the base station in any of the above embodiments may include a memory 108 and a processor 109, wherein:

a memory 108 for storing instructions;

a processor 109 configured to execute the instructions, so that the base station 1 performs operations performed by the base station, the destination base station, and the source base station in the synchronization method for enhanced discontinuous reception function according to any of the embodiments described above (e.g., any of fig. 2 to fig. 5, and fig. 7 to fig. 8).

Fig. 11 is a diagram illustrating an embodiment of a ue according to the present invention. As shown in fig. 11, the user terminal in any of the above embodiments may include a change message receiving module 201, a negotiation request receiving module 202, and a negotiation module 203, where:

a change message receiving module 201, configured to receive an eDRX state change message sent by a base station 1, where the base station 1 sets an eDRX state to an eDRX transition state when an eDRX parameter of the enhanced discontinuous reception eDRX is changed; waiting for a paging message sent by the next mobility management function node 3 according to the original eDRX parameter mode, and forwarding the paging message to the user terminal 2; changing the eDRX state according to the changed eDRX parameters; and transmits an eDRX state change message to the base station 1 mobility management function node 3 and the user terminal 2.

A negotiation request receiving module 202, configured to receive an eDRX negotiation request message sent by the base station 1.

A negotiation module 203, configured to perform eDRX negotiation with the mobility management function node 3 to change an eDRX status.

Based on the ue provided in the above embodiment of the present invention, during the eNB eDRX change transition state, the ue still receives paging in the original manner, and may initiate an eDRX negotiation message to the MME again in response to the eDRX negotiation again request message from the base station.

Therefore, the embodiment of the invention ensures the synchronization of the activation and deactivation of the eMTC eDRX function, thereby improving the real-time property of the eDRX state change and ensuring the timely responsiveness, flexibility and robustness of the system; the embodiment of the invention also improves the service continuity of the Internet of things and improves the user experience.

In an embodiment of the present invention, the change message receiving module 201 is further configured to receive an eDRX status message sent by the destination base station 1 during a process that the user terminal 2 has completed attachment at the source base station 1, the user terminal 2 and the mobility management function node 3 complete eDRX negotiation, and the user terminal 2 reselects or switches to the destination base station 1, where eDRX statuses of the source base station 1 and the destination base station 1 are different.

The negotiation request receiving module 202 may also be configured to receive an eDRX negotiation request message sent by the destination base station 1.

The negotiation module 203 may also be configured to perform eDRX negotiation with the mobility management function node 3 to change the eDRX status.

The ue according to the above embodiment of the present invention may implement the enhanced drx synchronization method according to any of the above embodiments (e.g., any of fig. 2 to 5 and fig. 7 to 8) through cooperation with the base station and the mobility management function node.

Fig. 12 is a diagram illustrating a ue according to another embodiment of the present invention. As shown in fig. 12, the user terminal in any of the above embodiments may include a change message receiving module 211, a negotiation request receiving module 212, and a negotiation module 213, where:

a change message receiving module 211, configured to receive an eDRX status message sent by a destination base station 1 when the user terminal 2 completes attachment at the source base station 1, the user terminal 2 completes eDRX negotiation with the mobility management function node 3, and the user terminal 2 reselects or switches to the destination base station 1, where eDRX statuses of the source base station 1 and the destination base station 1 are different.

A negotiation request receiving module 212, configured to receive an eDRX negotiation request message sent by the destination base station 1.

A negotiation module 213, configured to perform eDRX negotiation with the mobility management function node 3 to change an eDRX status.

The user terminal in the above embodiments of the present invention may implement the enhanced discontinuous reception synchronization method in any embodiment of fig. 7 to 8 through cooperation with the destination base station, the source base station, and the mobility management function node.

Based on the user terminal provided by the above embodiment of the present invention, through cooperation with the target base station, the source base station, and the mobility management function node, synchronization of activation and deactivation of the eMTCeDRX function can be achieved when the terminal reselects or switches the base station. The embodiment of the invention ensures the eDRX state consistency among the UE, the source base station, the target base station and the MME by adding the eDRX change notification message and the method for negotiating the eDRX capacity again. The embodiment of the invention improves the real-time property of the eDRX state change and ensures the timely response, flexibility and robustness of the system; the embodiment of the invention also improves the service continuity of the Internet of things and improves the user experience.

Fig. 13 is a diagram illustrating a mobility management function node according to an embodiment of the present invention. As shown in fig. 13, the mobility management function node in any of the above embodiments may include a status message receiving module 301 and a status negotiation module 302, where:

a status message receiving module 301, configured to receive an eDRX status change message sent by a base station 1, where the base station 1 sets an eDRX status to an eDRX transition status when an eDRX parameter of the enhanced discontinuous reception eDRX is changed; waiting for a paging message sent by the next mobility management function node 3 according to the original eDRX parameter mode, and forwarding the paging message to the user terminal 2; changing the eDRX state according to the changed eDRX parameters; and transmits an eDRX state change message to the base station 1 mobility management function node 3 and the user terminal 2.

The state negotiation module 302 is configured to perform eDRX negotiation with the mobile terminal after the base station 1 sends an eDRX negotiation request message to the user terminal 2, and change an eDRX state.

Based on the mobility management function node provided in the foregoing embodiment of the present invention, during the eNB eDRX change transition state, the paging may still be received in the original manner, and in response to the mobile terminal initiating the eDRX negotiation message again, the eDRX negotiation may be performed again with the mobile terminal.

In an embodiment of the present invention, the status message receiving module 201 may be further configured to receive an eDRX status message sent by the destination base station 1 in a process that the user terminal 2 completes attachment at the source base station 1, the user terminal 2 completes eDRX negotiation with the mobility management function node 3, and the user terminal 2 reselects or switches to the destination base station 1, where eDRX statuses of the source base station 1 and the destination base station 1 are different; the state negotiation module 202 may also be configured to perform eDRX negotiation with the mobile terminal after the destination base station 1 sends an eDRX negotiation request message to the user terminal 2, so as to change the eDRX state.

The mobility management function node according to the above-mentioned embodiment of the present invention may implement the enhanced drx synchronization method according to any of the above-mentioned embodiments (e.g., any of fig. 2 to 5 and fig. 7 to 8) through cooperation with the base station and the ue.

Fig. 14 is a diagram illustrating a mobility management function node according to another embodiment of the present invention. As shown in fig. 14, the mobility management function node in any of the above embodiments may include a status message receiving module 311 and a status negotiation module 312, where:

a status message receiving module 311, configured to receive an eDRX status message sent by a destination base station 1 when a user terminal 2 completes attachment at a source base station 1, the user terminal 2 completes eDRX negotiation with a mobility management function node 3, and the user terminal 2 reselects or switches to the destination base station 1, where eDRX statuses of the source base station 1 and the destination base station 1 are different.

The state negotiation module 312 is configured to perform eDRX negotiation with the mobile terminal after the destination base station 1 sends an eDRX negotiation request message to the user terminal 2, so as to change an eDRX state.

The mobility management function node according to the above-mentioned embodiments of the present invention may implement the enhanced discontinuous reception function synchronization method according to any embodiment of fig. 7 to 8 through cooperation with the destination base station, the source base station, and the user equipment.

Based on the mobility management function node provided in the above embodiment of the present invention, through cooperation with the target base station, the source base station, and the user terminal, synchronization of activation and deactivation of the eMTC eDRX function can be achieved when the terminal reselects or switches the base station. The embodiment of the invention ensures the eDRX state consistency among the UE, the source base station, the target base station and the MME by adding the eDRX change notification message and the method for negotiating the eDRX capacity again. The embodiment of the invention improves the real-time property of the eDRX state change and ensures the timely response, flexibility and robustness of the system; the embodiment of the invention also improves the service continuity of the Internet of things and improves the user experience.

The base stations, user terminals and mobility management function nodes 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 invention has been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present invention. 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, 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 or an optical disk, etc.

The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention 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 invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. An enhanced Discontinuous Reception (DRX) function synchronization method, comprising:

2. The enhanced discontinuous reception function synchronization method according to claim 1, further comprising:

the base station determines whether the eDRX parameter is changed.

3. The enhanced discontinuous reception function synchronization method according to claim 1 or 2,

the eDRX parameters comprise an eDRX on-state parameter and an eDRX off-state parameter;

the eDRX state of the base station comprises an eDRX on state, an eDRX off state and an eDRX transition state;

4. The enhanced discontinuous reception synchronization method according to claim 1 or 2, further comprising:

5. An enhanced Discontinuous Reception (DRX) function synchronization method, comprising:

6. The enhanced discontinuous reception synchronization method according to claim 5, further comprising:

7. The enhanced discontinuous reception function synchronization method according to claim 5 or 6,

8. A base station, comprising:

9. The base station of claim 8,

the base station is configured to perform operations for implementing the enhanced discontinuous reception function synchronization method according to any one of claims 2 to 4.

10. A base station, comprising:

a memory to store instructions;

a processor configured to execute the instructions to cause the base station to perform operations to implement the enhanced discontinuous reception function synchronization method according to any one of claims 1 to 7.

11. A user terminal, comprising:

12. The user terminal of claim 11,

the change message receiving module is further configured to receive an eDRX status message sent by the destination base station in a process that the user terminal completes attachment at the source base station, the user terminal completes eDRX negotiation with the mobility management function node, and the user terminal reselects or switches to the destination base station, where eDRX statuses of the source base station and the destination base station are different;

13. A user terminal, comprising:

14. A mobility management function node, characterized by,

15. The mobility management function node of claim 14,

the status message receiving module is further configured to receive an eDRX status message sent by the destination base station in a process that the user terminal completes attachment at the source base station, the user terminal completes eDRX negotiation with the mobility management function node, and the user terminal reselects or switches to the destination base station, where eDRX statuses of the source base station and the destination base station are different;

16. A mobility management function node, characterized by,

17. An enhanced discontinuous reception function synchronization system, comprising a base station according to any of claims 8-10, a user terminal according to any of claims 11-13, and a mobility management function node according to any of claims 14-16.

18. The enhanced drx functional synchronization system of claim 17, wherein the base station comprises a source base station and a destination base station, and wherein:

a destination base station for performing an operation for implementing the enhanced discontinuous reception function synchronization method according to any one of claims 5 to 7.

19. A computer-readable storage medium storing computer instructions which, when executed by a processor, implement the enhanced discontinuous reception function synchronization method according to any one of claims 1 to 7.