CN116419434A

CN116419434A - State transition method, device and equipment

Info

Publication number: CN116419434A
Application number: CN202111669648.4A
Authority: CN
Inventors: 韩立锋
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2023-07-11
Also published as: WO2023125730A1

Abstract

The application provides a state transition method, a state transition device and state transition equipment, wherein the method comprises the following steps: and the terminal equipment in the RRC idle state or the RRC inactive state comprising the multicast service exists, and when the terminal equipment meets the RRC state transition condition, the terminal equipment performs RRC state transition. The flexibility of receiving the multicast service is improved.

Description

State transition method, device and equipment

Technical Field

The present disclosure relates to the field of communications, and in particular, to a state transition method, apparatus, and device.

Background

The terminal device may receive the multicast service sent by the base station. For example, the terminal device may acquire the multicast service transmitted by the base station through radio resource control (Radio Resource Control, RRC).

Currently, the terminal device may receive the multicast service sent by the base station in an RRC idle state, an RRC connected state, and an RRC inactive state. For example, when the RRC state of the terminal device is a connected state, the terminal device may receive the multicast service sent by the base station and feed back the reception result to the base station. However, after the terminal device sets the RRC state, the terminal device can only receive the multicast service sent by the base station in the RRC state, which results in lower flexibility of receiving the multicast service by the terminal device.

Disclosure of Invention

The application provides a state transition method, device and equipment, which are used for solving the technical problem of low flexibility of receiving multicast service by terminal equipment in the prior art.

In a first aspect, the present application provides a state transition method, the method comprising:

and the terminal equipment in the RRC idle state or the RRC inactive state comprising the multicast service exists, and when the terminal equipment meets the RRC state transition condition, the terminal equipment performs RRC state transition.

In one possible embodiment, the RRC state transition condition includes at least one of:

receiving indication information sent by a base station, wherein the indication information is used for indicating the terminal equipment to perform RRC state transition;

the terminal equipment meets a preset condition in the RRC idle state or the inactive state;

the RRC state transition timer of the terminal device times out.

In one possible implementation manner, receiving indication information sent by a base station includes:

and receiving a paging message sent by the base station, wherein the paging message comprises the indication information.

In a possible implementation manner, the paging message further includes a target RRC state, where the target RRC state is an RRC state after the terminal device performs the RRC state transition.

In a possible implementation manner, the paging message further includes an identifier of the first multicast service, and the terminal device that is receiving or is to receive the first multicast service adopts the indication information; the indication information is used for indicating the terminal equipment to perform RRC state transition when receiving or waiting to receive the first multicast service in an RRC idle state or an inactive state.

In one possible embodiment, the preset condition includes at least one of the following:

the number of data packets failed to be received by the terminal equipment in the RRC idle state or the inactive state is larger than or equal to a first threshold value;

the proportion of the data packets which are failed to be received by the terminal equipment in the RRC idle state or the inactive state is larger than or equal to a second threshold value;

the number of the data packets which are continuously received by the terminal equipment in the RRC idle state or the inactive state and fail is larger than or equal to a third threshold value;

the proportion of the data packets which are continuously received by the terminal equipment in the RRC idle state or the inactive state and fail is larger than or equal to a fourth threshold value.

In one possible embodiment, the method further comprises:

And the terminal equipment receives the RRC message sent by the base station, wherein the RRC message comprises the RRC state transition timer.

In one possible implementation, the RRC message includes:

and the RRC state transition timer is associated with the second multicast service, and the terminal equipment starts the RRC state transition timer when the terminal equipment receives the second multicast service after receiving or presetting a period of time.

In one possible implementation, the RRC message includes at least one of:

RRC reject message, RRC release message, RRC setup message, RRC restore message, RRC reconfiguration message.

In a possible implementation manner, the terminal device performs RRC state transition, including:

the terminal equipment sends a request message to a base station, wherein the request message comprises a cause value, and the cause value is the reception of multicast service;

the terminal equipment receives a response message corresponding to the request message sent by the base station;

and the terminal equipment performs RRC state conversion according to the response message.

In a possible implementation manner, the terminal device is in the RRC idle state;

The request message is an RRC establishment request message;

the response message is an RRC setup message or an RRC reject message.

In a possible implementation manner, the terminal device performs RRC state transition according to the response message, including:

if the response message is an RRC establishment message, the terminal equipment is switched to an RRC connection state;

and if the response message is an RRC reject message, the terminal equipment resides in the RRC idle state.

In a possible implementation manner, the terminal device is in the inactive state;

the request message is an RRC recovery request message;

the response message is an RRC recovery message, or an RRC reject message or an RRC release message.

if the response message is an RRC recovery message, the terminal equipment is switched to an RRC connection state;

if the response message is an RRC reject message, the terminal equipment is switched to the RRC idle state;

if the response message is an RRC release message, when the RRC release message includes configuration information, the terminal device resides in the inactive state, and when the RRC release message does not include the configuration information, the terminal device switches to an RRC idle state.

In one possible implementation manner, the multicast service exists in the terminal device, including:

the terminal device is executing the multicast service; or alternatively, the process may be performed,

and the terminal equipment waits for executing the multicast service.

In a second aspect, the present application provides a state transition device, including a transition module, wherein:

the switching module is used for existence of a terminal device in an RRC idle state or an RRC inactive state comprising multicast service, and when the terminal device meets the RRC state switching condition, the terminal device performs RRC state switching.

the RRC state transition timer of the terminal device times out.

In one possible implementation, the conversion module is specifically configured to:

In a possible implementation manner, the state transition device further comprises a receiving module, wherein the receiving module is used for:

And receiving an RRC message sent by the base station, wherein the RRC message comprises the RRC state transition timer.

In one possible implementation, the RRC message includes:

In one possible implementation, the RRC message includes at least one of:

the request message is an RRC establishment request message;

The response message is an RRC setup message or an RRC reject message.

the request message is an RRC recovery request message;

In one possible implementation, the conversion module is specifically configured to: if the response message is an RRC recovery message, the terminal equipment is switched to an RRC connection state;

and the terminal equipment waits for executing the multicast service.

In a third aspect, the present application provides a terminal device, including: a processor, a memory;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored in the memory, causing the processor to perform the state transition method as described in the first aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for implementing the state transition method of any one of the preceding claims when the computer-executable instructions are executed by a processor.

In a fifth aspect, the invention also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the state transition method as claimed in any one of the preceding claims.

The application provides a state transition method, a state transition device and state transition equipment, wherein the state transition method, the device and the state transition equipment comprise terminal equipment in an RRC idle state or an RRC inactive state of multicast service, and the terminal equipment performs RRC state transition when the terminal equipment meets RRC state transition conditions. In the method, when the terminal equipment meets the RRC state transition condition, the terminal equipment can convert the RRC idle state or the RRC inactive state into the RRC connection state, and further, when receiving the multicast service, the terminal equipment feeds back a receiving result to the base station, so that the receiving effect of the multicast service is improved, and the terminal equipment can flexibly control the RRC state, realize the RRC state transition, and further improve the flexibility of the terminal equipment in receiving the multicast service.

Drawings

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

fig. 2 is a flow chart of a state transition method according to an embodiment of the present application;

fig. 3 is a schematic diagram of performing RRC state transition by a terminal device according to an embodiment of the present application;

fig. 4 is a schematic diagram of a process of receiving a response message according to an embodiment of the present application;

fig. 5 is a schematic diagram of another process for receiving a response message according to an embodiment of the present application;

fig. 6A is a schematic diagram of an RRC state transition procedure according to an embodiment of the present application;

fig. 6B is a schematic diagram of another RRC state transition procedure provided in an embodiment of the present application;

fig. 7A is a schematic diagram of an RRC state transition procedure according to an embodiment of the present application;

fig. 7B is a schematic diagram of another RRC state transition procedure according to an embodiment of the present application;

fig. 7C is a schematic diagram of another RRC state transition procedure according to an embodiment of the present application;

fig. 7D is a schematic diagram of another RRC state transition procedure provided in an embodiment of the present application;

fig. 8 is a schematic process diagram of a state transition method according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a state transition device according to an embodiment of the present application;

Fig. 10 is a schematic structural diagram of another state transition device according to an embodiment of the present application;

fig. 11 is a schematic hardware structure of a terminal device provided in the present application.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

For ease of understanding, concepts related to the embodiments of the present application will be described first.

Terminal equipment: is a device with wireless receiving and transmitting function. The terminal device may be deployed on land, including indoors or outdoors, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a vehicle-mounted terminal device, a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a wearable terminal device, or the like. The terminal device according to the embodiments of the present application may also be referred to as a terminal, a User Equipment (UE), an access terminal device, a vehicle terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus, etc. The terminal device may also be fixed or mobile.

Core network: is a network consisting of core network elements. The core network element may be referred to as a core network device, and is a network element deployed in a core network, for example, a core network control plane network element or a core network user plane network element. The Core Network in the embodiment of the application may be an evolved packet Core Network (Evolved Packet Core, EPC), a 5G Core Network (5G Core Network), or may be a new Core Network in a future communication system. For example, the 5G core network is composed of a set of network elements, and implements access and mobility management functions (Access and Mobility Management Function, AMF) for functions such as mobility management, user plane functions (User Plane Function, UPF) for functions such as packet routing forwarding and QoS (Quality of Service) management, session management functions (Session Management Function, SMF) for functions such as session management, IP address allocation and management, and the like. The EPC may be composed of a mobility management entity (Mobility Management Entity, MME) providing functions of mobility management, gateway selection, etc., a Serving Gateway (S-GW) providing functions of packet forwarding, etc., and a PDN Gateway (P-GW) providing functions of terminal address allocation, rate control, etc. For multicast broadcast service (Multicast Broadcast Service, MBS), the core network may include several new network elements to implement functions such as forwarding of data packets, MBS session management, qoS management, transmission mode switching (switching between unicast and multicast/broadcast transmission modes), and so on. Alternatively, the functions may be implemented by an existing core network element.

In the related art, a terminal device may acquire a multicast service transmitted from a base station through RRC. For example, the terminal device may receive the multicast service transmitted by the base station in a RRC-different state. Currently, the terminal device may receive the multicast service sent by the base station in an RRC idle state, an RRC connected state, and an RRC inactive state. For example, when the RRC state of the terminal device is in an idle state, the terminal device may receive the multicast service sent by the base station, and when the RRC state of the terminal device is in a connected state, the terminal device may not only receive the multicast service sent by the base station, but also send a reception result of the multicast service to the base station. However, after the terminal device sets the RRC state, the terminal device can only fixedly receive the multicast service transmitted by the base station in the RRC state. For example, if the RRC state set by the terminal device is an idle state, when the base station broadcasts the multicast service, the terminal device can only receive the multicast service sent by the base station in the RRC idle state. This results in a low flexibility of the terminal device to receive multicast services.

In order to solve the technical problem of low flexibility of receiving a multicast service by a terminal device in the related art, the embodiment of the application provides a state transition method, when the multicast service exists in the terminal device, the RRC state of the terminal device is determined, and when the RRC state is in an idle state or an inactive state, if the terminal device receives indication information sent by a base station and indicating the terminal device to perform RRC state transition, or a data packet that fails to be received by the terminal device in the RRC idle state or the inactive state meets a preset condition, or an RRC state transition timer of the terminal device is overtime, the terminal device performs RRC state transition. In this way, when the terminal equipment receives the multicast service sent by the base station, the terminal equipment can convert the RRC idle state or the RRC inactive state into the RRC connection state, further, after receiving the multicast service, the terminal equipment feeds back the receiving result to the base station, thereby improving the receiving effect of the multicast service, and the terminal equipment can flexibly control the RRC state, realize the RRC state conversion, and further improve the flexibility of the terminal equipment in receiving the multicast service.

Next, an application scenario of the embodiment of the present application will be described with reference to fig. 1.

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application. Referring to fig. 1, a base station and a terminal device are included. The RRC state of the terminal device is an RRC idle state. When the terminal equipment receives the multicast service sent by the base station, if the terminal equipment meets the RRC state transition condition, the terminal equipment can convert the RRC idle state into the RRC connection state and receive the multicast service sent by the base station through the RRC connection state. Thus, the terminal equipment can flexibly control the RRC state, realize RRC state transition, and further improve the flexibility of the terminal equipment in receiving the multicast service.

The technical scheme shown in the application is described in detail through specific embodiments. It should be noted that the following embodiments may exist alone or in combination with each other, and for the same or similar content, the description will not be repeated in different embodiments.

Fig. 2 is a flow chart of a state transition method according to an embodiment of the present application. Referring to fig. 2, the method may include:

s201, determining that there is a terminal device in an RRC idle state or an RRC inactive state including a multicast service.

The execution body of the embodiment of the application may be a terminal device, or may be a state conversion device disposed in the terminal device. Alternatively, the state transition device may be implemented by software, or may be implemented by a combination of software and hardware.

Alternatively, the multicast service (Multicastt Service, MS) may be a service in which the base station transmits data to a plurality of terminal devices. For example, the multicast service may be a service in which the base station multicasts a message to a plurality of terminal apparatuses, or the multicast service may be a service in which the base station transmits a message to a plurality of terminal apparatuses that have joined the multicast.

Alternatively, it may be determined that the terminal device has a multicast service according to the following possible implementation manner: the terminal device is executing the multicast service or the terminal device is waiting to execute the multicast service. Optionally, when the terminal device receives the multicast service, it is determined that the terminal device has the multicast service. For example, when the terminal device is receiving the multicast service transmitted by the base station, it may be determined that the terminal device has the multicast service at this time. Optionally, when the terminal device is about to receive the multicast service, determining that the multicast service exists in the terminal device. For example, if the terminal device starts to receive the multicast service transmitted by the base station after 1 minute, it is determined that the terminal device has the multicast service.

Optionally, the radio resource control RRC state of the terminal device includes: RRC connected state (RRC connected state), RRC inactive state (RRC inactive state) and RRC idle state (RRC idle state). Optionally, when the RRC state of the terminal device is an RRC connected state, an RRC inactive state, or an RRC idle state, the terminal device may receive the multicast service sent by the base station. For example, the terminal device may receive the multicast service sent by the base station in the RRC connected state, the terminal device may receive the multicast service sent by the base station in the RRC idle state, and the terminal device may also receive the multicast service sent by the base station in the RRC inactive state.

Optionally, when the RRC state of the terminal device is an RRC connected state, after the terminal device receives the multicast service sent by the base station, the terminal device may also send a result of receiving the multicast service to the base station. For example, the RRC state of the terminal device is an RRC connected state, and if the terminal device successfully receives the multicast service sent by the base station, the terminal device sends a message that the multicast service is successfully received to the base station.

S202, when the terminal equipment meets the RRC state transition condition, the terminal equipment performs RRC state transition.

Optionally, there is a terminal device in an RRC idle state or an RRC inactive state including the multicast service, and when the terminal device satisfies the RRC state transition condition, the terminal device performs RRC state transition. For example, if the terminal device is receiving or is about to receive the multicast service, the RRC state of the terminal device is in an idle state or an inactive state, and whether the terminal device satisfies the RRC state transition condition is determined, if yes, the terminal device performs RRC state transition, and if not, does not perform RRC state transition.

Optionally, the RRC state transition condition includes at least one of: receiving indication information sent by a base station, enabling a data packet which is failed to be received by a terminal device in an RRC idle state or an inactive state to meet preset conditions, and enabling an RRC state transition timer of the terminal device to be overtime.

Optionally, the indication information is used to instruct the terminal device to perform RRC state transition. For example, when the terminal device receives the indication information sent by the base station, the terminal device satisfies the RRC state transition condition. For example, when the RRC state of the terminal device is in the RRC idle state or the RRC inactive state, if the terminal device receives the indication information sent by the base station, the terminal device satisfies the RRC state transition condition, and the terminal device performs RRC state transition, that is, initiates an RRC establishment or RRC link recovery procedure.

Optionally, the terminal device may receive the indication information sent by the base station according to the following possible implementation manner: and receiving the paging message sent by the base station. Optionally, the paging message includes indication information. For example, when the base station pages the terminal device in the paging time window, the base station may add indication information with 1bit width in the paging message (paging), and when the terminal device receives the paging message, the terminal device obtains the indication information sent by the base station in the paging message.

Optionally, the paging message further includes a target RRC state. The target RRC state is an RRC state after the terminal device performs RRC state transition. For example, the paging message includes indication information and a target RRC state, and if the target RRC state is an RRC idle state, the RRC state after the terminal device performs RRC state transition is an RRC idle state, if the target RRC state is an RRC connected state, the RRC state after the terminal device performs RRC state transition is an RRC connected state, and if the target RRC state is an RRC inactive state, the RRC state after the terminal device performs RRC state transition is an RRC inactive state.

Optionally, the paging message further includes an identifier of the first multicast service. Optionally, the terminal device receiving or waiting to receive the first multicast service adopts the indication information. For example, the indication information in the paging message is used to indicate that the terminal device performs RRC state transition when the terminal device is accepting or waiting to accept the first multicast service in an RRC idle state or inactive state. For example, if the RRC state of the terminal device is an RRC idle state and the paging message sent by the base station and received by the terminal device includes indication information, an RRC connection state (target RRC state), and an identifier of the first multicast service, when the terminal device receives or is about to receive the first multicast service, RRC state transition is performed (e.g., the terminal device transitions the RRC idle state to the RRC connection state or the RRC inactive state).

Alternatively, the indication message in the paging message may indicate RRC state transitions of a group of terminal devices. For example, if the multicast network includes terminal equipment a, terminal equipment B and terminal equipment C, when the terminal equipment a, terminal equipment B and terminal equipment C receive or are about to receive the multicast message, the paging message sent by the base station may include state transition indications of the terminal equipment a, terminal equipment B and terminal equipment C.

Alternatively, the network device may carry indication information for RRC state transition indication in a plurality of paging messages. For example, the network device may add the indication information in the paging message a, or may add the indication information in the paging message B.

Alternatively, the network device may receive the paging message sent by the core network device and send the paging message to the terminal device. For example, the base station may receive a paging message sent by the core network element, where the paging message includes indication information, and the base station may send the paging message to the terminal device.

Optionally, the network device may send a paging message carrying the indication information to the terminal device according to the network state. For example, when the network load of the base station is smaller than a preset value, the base station may add information indicating that the terminal device is converted into RRC connection state in the paging message, and send the paging message to the terminal device.

Optionally, when the terminal device is in the RRC idle state or inactive state, if the terminal device satisfies the preset condition in the RRC idle state or in the RRC inactive state, it is determined that the terminal device satisfies the RRC state transition condition. For example, when the RRC state of the terminal device is the RRC idle state, if the number of data packets failed to be received by the terminal device in the RRC idle state is greater than a preset threshold, it is determined that the terminal device meets an RRC state transition condition, and the terminal device performs RRC state transition.

Optionally, the preset condition includes at least one of: the number of the data packets which fail to be received by the terminal equipment in the RRC idle state or the inactive state is larger than or equal to a first threshold value; the proportion of the data packets which fail to be received by the terminal equipment in the RRC idle state or the inactive state is larger than or equal to a second threshold value; the number of the data packets which are continuously received by the terminal equipment in the RRC idle state or the inactive state and fail is larger than or equal to a third threshold value; the proportion of the data packets which are continuously received by the terminal equipment in the RRC idle state or the inactive state and fail is larger than or equal to a fourth threshold value.

Optionally, if the number of the data packets failed to be received by the terminal device in the RRC idle state or the inactive state is greater than or equal to the first threshold, it is determined that the data packets failed to be received meet a preset condition. For example, when the first threshold is 5, if the number of data packets failed to be received by the terminal device in the RRC idle state is 5, it is determined that the data packets failed to be received by the terminal device meet the preset condition.

Optionally, if the proportion of the data packets failed to be received by the terminal device in the RRC idle state or the inactive state is greater than or equal to the second threshold, it is determined that the data packets failed to be received meet the preset condition. For example, when the second threshold is 50%, if the number of data packets received by the terminal device in the RRC idle state is 10 and the number of data packets failed to receive is 5, it is determined that the data packets failed to receive by the terminal device satisfy the preset condition. For example, when the second preset is 50%, if the number of data packets received by the terminal device in the preset period is 10 and the number of data packets failed to be received by the terminal device in the RRC idle state is 5, it is determined that the data packets failed to be received by the terminal device satisfy the preset condition.

If the number of the data packets which are continuously received and failed by the terminal equipment in the RRC idle state or the non-activated state is larger than or equal to a third threshold value, determining that the data packets which are received and failed meet the preset condition. For example, if the third threshold is 3 and the data of the data packet that is continuously received by the terminal device and fails in the RRC inactive state is 3, it is determined that the data packet that is received by the terminal device and fails meets the preset condition.

If the proportion of the data packets which are continuously received and failed by the terminal equipment in the RRC idle state or the inactive state is greater than or equal to a fourth threshold value, determining that the data packets which are received and failed meet the preset condition. For example, when the fourth threshold is 50%, if the number of data packets received by the terminal device in the RRC idle state is 10 and the number of data packets failed to be continuously received is 5, it is determined that the data packets failed to be received by the terminal device satisfy the preset condition.

Optionally, the first threshold, the second threshold, the third threshold and the fourth threshold may be configured by the base station, or may be set by the terminal device. For example, the base station may configure the above threshold through RRC dedicated signaling or system information, or the terminal device configures the above threshold according to the QoS parameter of the multicast service, which will not be described in detail in the embodiment of the present application.

Optionally, when the RRC state of the terminal device is in the RRC idle state or the RRC inactive state, if the RRC state transition timer of the terminal device is timed out, it is determined that the terminal device meets the RRC state transition suite, and the terminal device performs RRC state transition. Further, the timer is associated with the second multicast service, i.e. the timer is only used when the terminal device receives or is about to receive the second multicast service. Otherwise, the timer is not employed.

Optionally, the RRC state transition timer is configured to indicate a duration that the RRC state of the terminal device is in an RRC idle state or an RRC inactive state. For example, the duration of the RRC state transition timer of the terminal device is set to 30 minutes, if the duration of the terminal device in the idle state is longer than 30 minutes, it is determined that the RRC state transition timer of the terminal device is overtime, and the terminal initiates RRC link establishment and transitions to the RRC connection state; the terminal device may also transition the RRC inactive state to an RRC idle state.

Alternatively, the base station may configure an RRC state transition timer of the terminal device and transmit the state transition timer to the terminal device. Alternatively, the terminal device may receive the RRC message sent by the base station. The RRC message includes an RRC state transition timer. For example, when the terminal device receives the RRC hour of the base station, the RRC state transition timer configured by the base station for the terminal device may be acquired in the RRC message. For example, when the network load of the base station is large, the base station may add an RRC state transition timer to the RRC message sent to the terminal device, where the duration of the RRC state transition timer may be a duration required when the network load of the base station is reduced to be smooth, so that the terminal device may receive the multicast message in an RRC idle state or an inactive state, and when the network of the network device is smooth, the RRC state transition timer in the terminal device times out, and the RRC state of the terminal device may be transitioned from the RRC idle state or the RRC inactive state to the RRC connected state. Optionally, the RRC message further includes a second multicast service, the RRC state transition timer is associated with the second multicast service, and the terminal device starts the RRC state transition timer when the terminal device receives the second multicast service after a predetermined period of time or after receiving the second multicast service.

Optionally, the RRC message includes at least one of: RRC reject (RRCReject) message, RRC release (RRCRelease) message, RRC setup (RRCSetup) message, RRC restore (rrcreseume) message, RRC reconfiguration (rrcreconfigure) message.

Optionally, when the base station sends the RRC message to the terminal device, the RRC message may include an RRC state transition timer configured by the base station.

Optionally, when the terminal device has the multicast service, if the RRC state of the terminal device is an RRC idle state or an RRC inactive state and the terminal device meets the RRC state transition condition, the terminal device may perform RRC state transition. For example, the terminal device may transition the RRC state from the RRC idle state to the RRC connected state, or the terminal device may transition the RRC inactive state to the RRC idle state or the RRC connected state, or the like.

The embodiment of the application provides a state transition method, when multicast service exists in a terminal device, an RRC state of the terminal device is determined, when the RRC state is an idle state or an inactive state, if the terminal device receives indication information sent by a base station and indicating the terminal device to perform RRC state transition, or a data packet which fails to be received by the terminal device in the RRC idle state or the inactive state meets a preset condition, or an RRC state transition timer of the terminal device is overtime, the terminal device performs RRC state transition. Therefore, when the terminal equipment meets the RRC state transition condition, the terminal equipment can flexibly control the RRC state to realize the RRC state transition, and further the flexibility of receiving the multicast service by the terminal equipment is improved.

The following describes in detail, based on the embodiment shown in fig. 2, a procedure of performing RRC state transition by the terminal device in the embodiment shown in fig. 2 with reference to fig. 3.

Fig. 3 is a schematic diagram of performing RRC state transition by a terminal device according to an embodiment of the present application. Referring to fig. 3, the method includes:

s301, the terminal equipment sends a request message to the base station.

Optionally, the request message includes a cause value, where the cause value is the reception of the multicast service. The terminal device sends the request message to the base station in the following two cases:

case 1: the terminal device is in an RRC idle state.

Optionally, when the RRC state of the terminal device is an RRC idle state, the request message sent by the terminal device to the base station is an RRC establishment request message. For example, when the RRC state of the terminal device is an RRC idle state, the terminal device may send an RRC setup request (rrcsetup request) message to the base station to request to transition the RRC state of the terminal device from the RRC idle state to the RRC connected state.

Alternatively, the terminal device may add a cause value in the RRC setup request message. For example, the terminal device may include a cause value of "reception of multicast service" in the RRC establishment request message.

Case 2: the RRC is inactive.

Optionally, when the RRC state of the terminal device is an RRC inactive state, the request message sent by the terminal device to the base station is an RRC resume request message. For example, when the RRC state of the terminal device is an RRC inactive state, the terminal device may send an RRC resume request (rrcruumerequest) message to the base station to request to transition the RRC state of the terminal device from an RRC idle state to an RRC connected state.

Alternatively, the terminal device may add a cause value in the RRC resume request message. For example, the terminal device may add a cause value of "reception of multicast service" in the RRC establishment request message.

S302, the terminal equipment receives a response message corresponding to the request message sent by the base station.

Optionally, the terminal device receives the response message corresponding to the request message sent by the base station in the following two cases:

case 1: the terminal device is in an RRC idle state.

Optionally, when the RRC state of the terminal device is an RRC idle state, the response message is an RRC setup message or an RRC reject message. For example, if the terminal device sends an RRC setup request message to the base station, the terminal device receives a response message sent by the base station as an RRC setup (RRCSetup) message or an RRC reject (rrreject) message.

Next, a procedure for the terminal device to receive the response message in this case will be described with reference to fig. 4.

Fig. 4 is a schematic diagram of a process of receiving a response message according to an embodiment of the present application. In the embodiment shown in fig. 4, the RRC state of the terminal device is an RRC idle state, please refer to fig. 4, including the network device and the terminal device. The terminal device sends an RRC setup request message to the network device, and after the network device receives the RRC setup request message of the terminal device, the network device may send an RRC setup message or an RRC reject message to the terminal device.

Case 2: the terminal device is in an RRC inactive state.

Optionally, when the RRC state of the terminal device is an RRC inactive state, the response message is an RRC resume message, or an RRC reject message, or an RRC release message. For example, if the terminal device sends an RRC resume request message to the base station, the response message sent by the base station to the terminal device is an RRC resume message, or an RRC reject message, or an RRC release message.

Next, a procedure for the terminal device to receive the response message in this case will be described with reference to fig. 5.

Fig. 5 is a schematic diagram of another process for receiving a response message according to an embodiment of the present application. In the embodiment shown in fig. 5, the RRC state of the terminal device is an RRC inactive state, please refer to fig. 5, which includes a network device and a terminal device. The terminal device sends an RRC restoration request message to the network device, and after the network device receives the RRC restoration request message of the terminal device, the network device may send an RRC establishment message, or an RRC reject message, or an RRC release message to the terminal device.

S303, the terminal equipment performs RRC state conversion according to the response message.

Optionally, the terminal device performs RRC state transition according to the response message, where two cases are as follows:

case 1: the terminal device is in an RRC idle state.

Optionally, when the RRC state of the terminal device is an RRC idle state, if the response message is an RRC setup message, the terminal device switches to an RRC connected state, and if the response message is an RRC reject message, the terminal device resides in the RRC idle state. For example, when the RRC state of the terminal device is an RRC idle state, the terminal device sends an RRC establishment request message to the base station, if the response message sent by the base station to the terminal device is an RRC establishment message, the terminal device switches the RRC idle state to an RRC connected state, and if the response message sent by the base station to the terminal device is an RRC reject message, the terminal device resides in the RRC idle state.

Next, an RRC state transition procedure of the terminal device in this case will be described with reference to fig. 6A to 6B.

Fig. 6A is a schematic diagram of an RRC state transition procedure according to an embodiment of the present application. In the embodiment shown in fig. 6A, the RRC state of the terminal device is an RRC idle state, please refer to fig. 6A, which includes a network device and a terminal device. The terminal equipment sends an RRC establishment request message to the network equipment, after the network equipment receives the RRC establishment request message of the terminal equipment, the response message sent to the terminal equipment is the RRC establishment message, and the terminal equipment converts the RRC state of the terminal equipment from an RRC idle state to an RRC connection state according to the RRC establishment message.

Fig. 6B is a schematic diagram of another RRC state transition procedure according to an embodiment of the present application. In the embodiment shown in fig. 6B, the RRC state of the terminal device is an RRC idle state, please refer to fig. 6B, which includes a network device and a terminal device. The terminal equipment sends an RRC establishment request message to the network equipment, after the network equipment receives the RRC establishment request message of the terminal equipment, the response message sent to the terminal equipment is an RRC rejection message, and the terminal equipment keeps the RRC state of the terminal equipment to be an RRC idle state according to the RRC rejection message.

Case 2: the terminal device is in an RRC inactive state.

When the RRC state of the terminal equipment is the RRC inactive state, if the response message is an RRC recovery message, the terminal equipment is switched to the RRC connection state. For example, when the RRC state of the terminal device is inactive, the terminal device sends an RRC resume request message to the base station, and if the response message sent by the base station to the terminal device is an RRC resume message, the terminal device switches the RRC inactive state to the RRC connected state.

And if the response message is an RRC reject message, the terminal equipment is switched to an RRC idle state. For example, when the RRC state of the terminal device is inactive, the terminal device sends an RRC resume request message to the base station, and if the response message sent by the base station to the terminal device is an RRC reject message, the terminal device switches the RRC inactive state to the RRC idle state.

If the response message is an RRC release message, the terminal device resides in an inactive state when configuration information is included in the RRC release message, and switches to an RRC idle state when the configuration information is not included in the RRC release message. Optionally, the configuration information includes information that the UE retains in an RRC inactive state, for example, the configuration information may include: one or more of inactive radio network temporary identifier I-RNTI (Radio Network Temporary Identifier), RAN-side paging cycle, etc. For example, when the RRC state of the terminal device is an RRC inactive state, the terminal device sends an RRC resume request message to the base station, if the response message sent by the base station to the terminal device is an RRC release message and the RRC release message includes configuration information, the terminal device resides in the inactive state, and if the response message sent by the base station to the terminal device is an RRC release message and the RRC release message does not include configuration information, the terminal device switches the RRC inactive state to an RRC idle state.

Next, an RRC state transition procedure of the terminal device in this case will be described with reference to fig. 7A to 7D.

Fig. 7A is a schematic diagram of an RRC state transition procedure according to an embodiment of the present application. In the embodiment shown in fig. 7A, the RRC state of the terminal device is an RRC inactive state, please refer to fig. 7A, which includes a network device and a terminal device. The terminal equipment sends an RRC recovery request message to the network equipment, after the network equipment receives the RRC recovery request message of the terminal equipment, the response message sent to the terminal equipment is the RRC recovery message, and the terminal equipment converts the RRC state of the terminal equipment from an RRC inactive state to an RRC connection state according to the RRC recovery message.

Fig. 7B is a schematic diagram of another RRC state transition procedure according to an embodiment of the present application. In the embodiment shown in fig. 7B, the RRC state of the terminal device is an RRC inactive state, please refer to fig. 7B, which includes a network device and a terminal device. The terminal equipment sends an RRC recovery request message to the network equipment, after the network equipment receives the RRC recovery request message of the terminal equipment, the response message sent to the terminal equipment is an RRC rejection message, and the terminal equipment converts the RRC state of the terminal equipment from an RRC inactive state to an RRC idle state according to the RRC rejection message.

Fig. 7C is a schematic diagram of another RRC state transition procedure according to an embodiment of the present application. In the embodiment shown in fig. 7C, the RRC state of the terminal device is an RRC inactive state, please refer to fig. 7C, which includes a network device and a terminal device. The terminal equipment sends an RRC recovery request message to the network equipment, after the network equipment receives the RRC recovery request message of the terminal equipment, the response message sent to the terminal equipment is an RRC release message, the release message comprises configuration information, and the terminal equipment keeps the terminal equipment in an RRC inactive state according to the RRC release message.

Fig. 7D is a schematic diagram of another RRC state transition procedure according to an embodiment of the present application. In the embodiment shown in fig. 7D, the RRC state of the terminal device is an RRC inactive state, please refer to fig. 7D, which includes the network device and the terminal device. The terminal equipment sends an RRC recovery request message to the network equipment, after the network equipment receives the RRC recovery request message of the terminal equipment, the response message sent to the terminal equipment is an RRC release message, the release message does not comprise configuration information, and the terminal equipment converts the RRC state of the terminal equipment from an RRC inactive state to an RRC idle state according to the RRC release message.

The embodiment of the application provides a method for performing RRC state transition by terminal equipment, wherein the terminal equipment sends a request message to a base station, the terminal equipment receives a response message corresponding to the request message sent by the base station, and the terminal equipment performs RRC state transition according to the response message. In this way, the terminal device can flexibly adjust the RRC state of the terminal device according to the response message sent by the base station, thereby improving the flexibility of the terminal device in receiving the multicast service.

With reference to fig. 8, the following describes a procedure of the state transition method according to any of the above embodiments.

Fig. 8 is a schematic process diagram of a state transition method according to an embodiment of the present application. Referring to fig. 8, the network device and the terminal device are included. The RRC state of the terminal device is an RRC idle state. The network device quantity terminal device transmits a paging message. The paging message includes indication information, RRC connection state (target RRC state), and an identifier of the multicast service a.

Referring to fig. 8, when the network device sends the multicast service a to the terminal device, the terminal device switches the RRC state from the RRC idle state to the RRC connected state, and receives the multicast service a in the RRC connected state. Therefore, the terminal equipment can flexibly adjust the RRC state according to the indication information sent by the network equipment, and realize RRC state conversion, thereby improving the flexibility of the terminal equipment in receiving the multicast service.

Fig. 9 is a schematic structural diagram of a state transition device according to an embodiment of the present application. Referring to fig. 9, the state transition device 10 includes a transition module 11, wherein:

the switching module 11 is configured to perform RRC state switching when there is a terminal device in an RRC idle state or an RRC inactive state including a multicast service, where the terminal device satisfies an RRC state switching condition.

the RRC state transition timer of the terminal device times out.

In one possible embodiment, the conversion module 11 is specifically configured to:

The state conversion device provided in the embodiment of the present application may execute the technical solution shown in the foregoing method embodiment, and its implementation principle and beneficial effects are similar, and will not be described herein again.

The state transition device shown in the embodiment of the application may be a chip, a hardware module, a processor, or the like. Of course, the state transition device may take other forms, which are not particularly limited in the embodiments of the present application.

Fig. 10 is a schematic structural diagram of another state transition device according to an embodiment of the present application. On the basis of the embodiment shown in fig. 9, referring to fig. 10, the state transition device 10 further includes a receiving module 12, where the receiving module 12 is configured to:

In one possible implementation, the RRC message includes:

In one possible implementation, the RRC message includes at least one of:

the request message is an RRC establishment request message;

the response message is an RRC setup message or an RRC reject message.

the request message is an RRC recovery request message;

and the terminal equipment waits for executing the multicast service.

Fig. 11 is a schematic hardware structure of a terminal device provided in the present application. Referring to fig. 11, the terminal device 20 may include: a processor 21 and a memory 22, wherein the processor 21 and the memory 22 may communicate; illustratively, the processor 21 and the memory 22 are in communication via a communication bus 23, said memory 22 being adapted to store program instructions, said processor 21 being adapted to invoke the program instructions in the memory to perform the state transition method as shown in any of the method embodiments described above.

Optionally, the terminal device 20 may further comprise a communication interface, which may comprise a transmitter and/or a receiver.

Alternatively, the processor may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor or in a combination of hardware and software modules within a processor.

Embodiments of the present application provide a readable storage medium having a computer program stored thereon; the computer program is configured to implement the state transition method according to any of the embodiments described above.

Embodiments of the present application provide a computer program product comprising instructions that, when executed, cause a computer to perform the above-described state transition method.

All or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a readable memory. The program, when executed, performs steps including the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disk, and any combination thereof.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processing unit of a general purpose computer, special purpose computer, embedded processor, or other programmable terminal device to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable terminal device, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable terminal device to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable terminal device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer implemented process such that the instructions which execute on the computer or other programmable device provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to encompass such modifications and variations.

In the present application, the term "include" and variations thereof may refer to non-limiting inclusion; the term "or" and variations thereof may refer to "and/or". The terms "first," "second," and the like in this application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. In the present application, "plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Claims

1. A method of state transition, comprising:

2. The method of claim 1, wherein the RRC state transition condition includes at least one of:

the RRC state transition timer of the terminal device times out.

3. The method of claim 2, wherein receiving the indication information sent by the base station comprises:

4. The method of claim 3 wherein the paging message further includes a target RRC state, the target RRC state being an RRC state after the terminal device performs the RRC state transition.

5. The method according to claim 3 or 4, wherein the paging message further comprises an identifier of the first multicast service, and the terminal device receiving or waiting to receive the first multicast service uses the indication information; the indication information is used for indicating the terminal equipment to perform RRC state transition when receiving or waiting to receive the first multicast service in an RRC idle state or an inactive state.

6. The method according to any one of claims 2-5, wherein the preset conditions include at least one of:

7. The method according to any one of claims 2-6, further comprising:

8. The method of claim 7, wherein the RRC message comprises:

9. The method according to claim 7 or 8, wherein the RRC message includes at least one of:

10. The method according to any of claims 1-9, wherein the terminal device performs RRC state transition, comprising:

11. The method according to claim 10, wherein the terminal device is in the RRC idle state;

the request message is an RRC establishment request message;

the response message is an RRC setup message or an RRC reject message.

12. The method according to claim 11, wherein the terminal device performs RRC state transition according to the response message, comprising:

13. The method of claim 10, wherein the terminal device is in the inactive state;

the request message is an RRC recovery request message;

14. The method according to claim 13, wherein the terminal device performs RRC state transition according to the response message, comprising:

15. The method according to any of claims 1-14, wherein the terminal device has multicast traffic, comprising:

And the terminal equipment waits for executing the multicast service.

16. A state transition device, comprising a determination module and a transition module, wherein:

the determining module is used for determining the Radio Resource Control (RRC) state of the terminal equipment when the multicast service exists in the terminal equipment;

the switching module is used for switching the RRC state when the terminal equipment is in an RRC idle state or an inactive state and meets the RRC state switching condition.

17. A terminal device, comprising: a processor, a memory;

the memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory causing the processor to perform the state transition method of any one of claims 1-15.

18. A computer readable storage medium having stored therein computer executable instructions for implementing the state transition method of any of claims 1-15 when the computer executable instructions are executed by a processor.

19. A computer program product comprising a computer program which, when executed by a processor, implements the state transition method of any of claims 1-15.