CN105578487A - A monitoring method for terminal disconnection, terminal, and base station - Google Patents

Abstract

The present invention provides a heartbeat monitoring method, including: during the interaction process between a terminal and a base station, the terminal receives heartbeat information sent by the base station, the heartbeat information includes all terminals in the base station that are in a connection state with the base station ID of the terminal; the terminal determines whether there is an ID of the terminal in the heartbeat information, and if not, determines that the terminal is disconnected from the base station. The invention enables the terminal to have the ability to monitor whether it is disconnected when there is no business interaction with the base station.

Description

A monitoring method for terminal disconnection, terminal, and base station

technical field

The invention relates to the field of communication technology, in particular to a method for monitoring terminal disconnection, a terminal, and a base station.

Background technique

There are many problems in the communication system between the state consistency of the base station and the terminal. In a general communication system, the state of a terminal is divided into a connected state and a non-connected state. If the terminal accesses the base station network and can monitor the scheduling authorization of the base station, it is in an online state, which is called a connected state. Otherwise, the terminal goes offline and is in a disconnected state. The terminal in the non-connected state must re-connect to the base station network, so that the base station can normally perform resource scheduling and data transmission on it.

There are many reasons for the terminal to go offline. For example, the terminal monitors the downlink signal-to-noise ratio. If the downlink signal-to-noise ratio is lower than a certain threshold for a long time, it determines that the downlink fails, causing the terminal to exit the connection state and the terminal goes offline. Or when the terminal sends data uplink, if the maximum retransmission of the Automatic RepeatreQuest (ARQ) of the radio link control layer (RadioLinkControl, RLC) occurs, the terminal will also take the initiative to go offline. However, if the terminal does not send uplink data for a while, and the base station finds that the ARQ maximum retransmission of the downlink RLC layer is active and releases the terminal, but the terminal does not receive the connection release command, the maintenance status of the base station and the terminal will be inconsistent. Completely release all information of the terminal, but the terminal is still considered to be in the connected state. Then if the terminal initiates an uplink scheduling request, the base station will not respond. And the base station will not actively schedule the downlink transmission of the terminal. This is equivalent to the long-term hanging of the terminal in the network.

When there is no uplink service on the terminal side and the base station has released the terminal information, the base station and the terminal have no service interaction, and it is difficult for the terminal to know whether it is online.

It can be seen from the above description that it is necessary to provide a monitoring method for terminal disconnection, so that the terminal has the ability to monitor whether it is disconnected even when there is no service interaction with the base station.

Contents of the invention

Aiming at the defects in the prior art, the present invention provides a monitoring method for terminal disconnection, so that the terminal has the ability to monitor whether it is disconnected even when there is no service interaction with the base station.

In a first aspect, the present invention provides a heartbeat monitoring method, comprising:

During the interaction process between the terminal and the base station, the terminal receives heartbeat information sent by the base station, where the heartbeat information includes identifiers of all terminals in the base station that are in a connected state with the base station;

The terminal determines whether there is an identifier of the terminal in the heartbeat information, and if not, determines that the terminal is disconnected from the base station.

Wherein, the terminal receives the heartbeat information sent by the base station, and the heartbeat information includes identifiers of all terminals in the base station that are connected to the base station, including:

The terminal receives Q heartbeat frames sent by the base station at time _t0 in the continuous Q periods T at time _t0 , and each heartbeat frame carries part of the The base station maintains the identification of the terminal in the connected state, the Q heartbeat frames include P heartbeat frames that are different from each other, and there are QP heartbeat frames that are repeated, and the P heartbeat frames carry all the heartbeat frames in the base station that are related to the The identifier of the terminal that the base station maintains the connected state, Q≥P≥1.

Wherein, the method also includes:

After the terminal determines that it has not received its own identity in the heartbeat frame and determines to disconnect from the base station, the terminal sends a scheduling request SR to the base station. If the terminal does not receive a scheduling authorization from the base station, Then it is finally confirmed that the terminal is disconnected from the base station.

Wherein, the method also includes:

After the terminal determines that it has not received its own identity in the heartbeat frame and determines to disconnect from the base station, the terminal reports a scheduling request SR to the base station, and if the terminal receives a scheduling authorization from the base station, then It is finally confirmed that the terminal remains connected to the base station, and continues to monitor heartbeat information.

In a second aspect, the present invention provides a heartbeat sending method, including:

During the interaction between the terminal and the base station, the base station sends heartbeat information to the terminal, where the heartbeat information includes identities of all terminals in the base station that are connected to the base station,

so that the terminal determines whether the terminal is connected to the base station according to the heartbeat information.

Wherein, the base station sends heartbeat information to the terminal, and the heartbeat information includes identifiers of all terminals in the base station that are connected to the base station, including:

If the number of terminals in the base station in the connected state with the base station does not exceed the first threshold M,

Then the base station sends a heartbeat frame to the terminal at time _t0 in a cycle T, and the heartbeat frame carries the identifiers of all terminals in the base station that are connected to the base station;

If the number of terminals in the base station that maintains a connection state with the base station exceeds the first threshold M, the base station continuously sends P heartbeat frames to the terminal at time _t0 in consecutive P periods T, and each The heartbeat frame carries part of the identifiers of the terminals in the base station that are in the connected state with the base station, and the P consecutive heartbeat frames include the identifiers of all the terminals in the base station that are in the connected state with the base station, P>1, and the base station sends After a round of P heartbeat frames is completed, the next round of sending is continued, and the sending is cyclic.

In a third aspect, the present invention provides a terminal, including:

The receiving unit is configured to receive heartbeat information sent by the base station during the interaction process with the base station, the heartbeat information including the identifiers of all terminals in the base station that remain connected to the base station;

a judging unit, configured to judge whether there is an identifier of the terminal in the heartbeat information received by the receiving unit;

The determining unit is configured to determine that the terminal is disconnected from the base station when the judging unit determines that there is no identifier of the terminal in the heartbeat information received by the receiving unit.

Wherein, the terminal also includes:

a sending unit, configured to send a scheduling request SR to the base station after the determining unit determines that the terminal is disconnected from the base station;

The receiving unit is further configured to receive a scheduling grant sent by the base station;

The judging unit is further configured to judge whether the receiving unit has received the scheduling grant sent by the base station;

The determining unit is further configured to determine in the judging unit that the receiving unit has not received the scheduling grant sent by the base station, and finally confirm that the terminal is disconnected from the base station.

In a fourth aspect, the present invention provides a base station, including:

A sending unit, configured to send heartbeat information to the terminal during interaction with the terminal, the heartbeat information including the identifiers of all terminals in the base station that are connected to the base station, so that the terminal Determine whether the terminal is connected to the base station.

Wherein, the base station also includes:

a receiving unit, configured to receive a scheduling request SR sent by a terminal;

The sending unit is further configured to send a scheduling grant to the terminal after the receiving unit receives the scheduling request SR sent by the terminal.

It can be seen from the above technical solution that in the monitoring method for terminal disconnection of the present invention, when the base station has released the terminal, but the terminal has not received the release command from the base station, and when the terminal has no uplink service to interact with the base station, Whether it is offline can be monitored, and the reliability of monitoring is improved.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flowchart of a heartbeat monitoring method provided in Embodiment 1 of the present invention;

FIG. 2 is a flowchart of a heartbeat sending method provided in Embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a terminal provided in Embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of a base station provided by Embodiment 4 of the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 shows the flow chart of the heartbeat monitoring method provided by Embodiment 1 of the present invention, the heartbeat monitoring method described in Embodiment 1 of the present invention includes:

Step 101: During the interaction process between the terminal and the base station, the terminal receives the heartbeat information sent by the base station, and the heartbeat information includes the identities of all terminals in the base station that are connected to the base station.

Step 102: The terminal determines whether there is an identifier of the terminal in the heartbeat information, and if not, determines that the terminal is disconnected from the base station.

The terminal disconnection monitoring method described in this embodiment enables the terminal to have the ability to monitor whether it is disconnected even when there is no service interaction with the base station.

Wherein, the terminal receives the heartbeat information sent by the base station, and the heartbeat information includes identifiers of all terminals in the base station that are connected to the base station, including:

The terminal receives P heartbeat frames sent by the base station at time t ₀ in the continuous P periods T at time t ₀ in consecutive Q periods T, and each heartbeat frame carries part of the The identifiers of the terminals in the connected state in the base station, the P heartbeat frames carry the identifiers of the terminals in the connected state in all the base stations, Q≥P≥1.

The identifier of the terminal is the cell radio network temporary identifier C-RNTI.

In order to reduce the resource overhead occupied by the heartbeat in the base station, and to enable the terminal to better save power, the heartbeat period T and the periodic heartbeat sending time point are defined. A heartbeat cycle only sends heartbeat frames at this point in time. The terminal enters the active state by default at this time point, and listens to the authorized channel.

Generally, when a terminal performs heartbeat monitoring, the terminal is based on the maximum number of terminals N _max that can be accommodated in the cell, and the monitoring window of the terminal is defined as Q*T, Q=N _max /M, and M is the number of terminals carried in each heartbeat frame. The number of terminal identifiers, so as to ensure that the terminal does not miss monitoring. If the terminal does not detect its own heartbeat information within a monitoring window, it is determined that a heartbeat is lost, that is, it is determined that the terminal is offline. Of course, it is also possible to determine that the terminal is disconnected only when heartbeat loss occurs continuously for X times.

Preferably, the method also includes:

After the terminal determines that it has not received its own identity in the heartbeat frame and determines to disconnect from the base station, in order to further enhance the reliability of disconnection confirmation, the terminal sends a scheduling request SR to the base station, if the terminal If no scheduling authorization from the base station is received, it is finally confirmed that the terminal is disconnected from the base station.

Preferably, the method also includes:

After the terminal determines that it has not received its own identity in the heartbeat frame and determines to disconnect from the base station, in order to further enhance the reliability of disconnection confirmation, the terminal reports a scheduling request SR to the base station, if the terminal After receiving the scheduling authorization from the base station, it is finally confirmed that the terminal remains connected to the base station, and continues to monitor heartbeat information.

After confirming that the terminal remains connected to the base station, the terminal obtains the uplink scheduling authorization from the base station, and the terminal sends a filling packet. Due to the sending of the filling packet, the base station will naturally determine that the terminal has no business data, and will send a shutdown authorization.

FIG. 2 shows a flow chart of a heartbeat sending method provided in Embodiment 2 of the present invention. The heartbeat sending method described in Embodiment 2 of the present invention includes:

Step 201: During the interaction process between the terminal and the base station, the base station sends heartbeat information to the terminal, and the heartbeat information includes the identifiers of all terminals in the base station that are connected to the base station, so that the terminal The heartbeat information determines whether the terminal is connected to the base station.

Wherein, the base station sends heartbeat information to the terminal, and the heartbeat information includes identifiers of all terminals in the base station that are connected to the base station, including:

If the number of terminals in the base station in the connected state with the base station does not exceed the first threshold M,

Then the base station sends a heartbeat frame to the terminal at time _t0 in a cycle T, and the heartbeat frame carries the identifiers of all terminals in the base station that are connected to the base station;

If the number of terminals in the base station that maintains a connection state with the base station exceeds the first threshold M, the base station continuously sends P heartbeat frames to the terminal at time _t0 in consecutive P periods T, and each The heartbeat frame carries part of the identifiers of the terminals in the base station that are in the connected state with the base station, and the P consecutive heartbeat frames carry the identifiers of all the terminals in the base station that are in the connected state with the base station, P>1, and the base station sends After a round of P heartbeat frames is completed, the next round of sending is continued, and the sending is cyclic.

P=N/M, where N is the number of terminals in the base station that remain connected to the base station, and M is the number of terminal identifiers carried in each heartbeat frame.

It can be seen from the comparison that since N≤N _max , P≤Q.

The identifier of the terminal is the cell radio network temporary identifier C-RNTI.

At the heartbeat point t ₀ of the heartbeat cycle T, the base station sends a heartbeat packet through the authorized channel PDCCH or the traffic channel PDSCH, and the heartbeat information only carries the identifier C-RNTI of the terminal that the base station considers to be online. That is, the purpose of the heartbeat transmission is for the base station to broadcast the online activation terminal information recognized by the base station side to all terminals in the cell. The number of online activated terminal identifiers that can be carried in a heartbeat frame is determined according to the reliability of the transmission. When only one terminal identifier is carried in one period, the C-RNTI of a specific terminal is used for scrambling, and when multiple terminal identifiers are carried in one period, common C-RNTI is used for scrambling so that all terminals can resolve it.

A heartbeat period T carries the identities of M terminals, and a total of N terminals access in the cell under the base station. The heartbeat information of all terminals is sent in time division, and a total of P=N/M heartbeat cycles are sent. This is defined as a round of heartbeat sending window with a length of P*T. After one round of heartbeat transmission is completed, the next round of transmission starts, and the cycle continues. If the number of terminals in the cell changes, N changes, and the size of the heartbeat sending window changes.

FIG. 3 shows a schematic structural diagram of a terminal provided in Embodiment 3 of the present invention. The terminal described in Embodiment 3 of the present invention includes a receiving unit 31, a judging unit 32, and a determining unit 33;

The receiving unit 31 is configured to receive heartbeat information sent by the base station during the interaction process with the base station, where the heartbeat information includes the identifiers of all terminals in the base station that remain connected to the base station;

A judging unit 32, configured to judge whether there is an identifier of the terminal in the heartbeat information received by the receiving unit;

The determining unit 33 is configured to determine that the terminal is disconnected from the base station when the judging unit determines that there is no identifier of the terminal in the heartbeat information received by the receiving unit.

Preferably, the terminal further includes:

A sending unit 34, configured to send a scheduling request SR to the base station after the determining unit determines that the terminal is disconnected from the base station;

The receiving unit 31 is further configured to receive a scheduling grant sent by the base station;

The judging unit 32 is further configured to judge whether the receiving unit has received the scheduling grant sent by the base station;

The determining unit 33 is further configured to determine at the judging unit 32 that the receiving unit 31 has not received the scheduling authorization sent by the base station, and finally confirm that the terminal is disconnected from the base station.

The terminal described in this embodiment can be used to execute the method described in Embodiment 1, and its technical principles and technical effects are similar to those in Embodiment 1, and will not be repeated here.

FIG. 4 shows a schematic structural diagram of a base station provided in Embodiment 4 of the present invention. The base station described in Embodiment 4 of the present invention includes a sending unit 41;

The sending unit 41 is configured to send heartbeat information to the terminal during the interaction process with the terminal, the heartbeat information includes the identifiers of all terminals in the base station that are connected to the base station, so that the terminal can transmit the information according to the heartbeat The information determines whether the terminal is connected to the base station.

Preferably, the base station further includes:

The receiving unit 42 is configured to receive the scheduling request SR sent by the terminal;

The sending unit 41 is further configured to send a scheduling grant to the terminal after the receiving unit 42 receives the scheduling request SR sent by the terminal.

The base station described in this embodiment can be used to implement the method described in Embodiment 2, and its technical principle and technical effect are similar to those in Embodiment 2, and will not be repeated here.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be described in the foregoing embodiments Modifications are made to the recorded technical solutions, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. a heartbeat inspecting method, is characterized in that, comprising:

In terminal and base station reciprocal process, described terminal receives the heartbeat message that described base station sends, and described heartbeat message comprises the mark of all terminals keeping connected state in described base station with this base station;

Described terminal determines the mark whether having this terminal in described heartbeat message, if do not had, then determines that this terminal and described base station disconnect.

2. method according to claim 1, is characterized in that, described terminal receives the heartbeat message that described base station sends, and described heartbeat message comprises in described base station and keeps with this base station the mark of all terminals of connected state to comprise:

Described terminal is t in a continuous Q cycle T ₀base station described in reception is t in a described continuous Q cycle T ₀q the heartbeat frame that moment sends, described each heartbeat frame carries the mark of the terminal keeping connected state in the described base station of part with this base station, P mutually different heartbeat frame is included in described Q heartbeat frame, there is Q-P the heartbeat frame having repetition, described P heartbeat frame carries the mark of the terminal keeping connected state in all described base stations with this base station, Q>=P>=1.

3. method according to claim 1, is characterized in that, also comprises:

The mark of self is not received in described terminal judges heartbeat frame, after determining to disconnect with described base station, described terminal sends dispatch request SR to described base station, if described terminal does not receive the scheduling authorization of described base station, then finally confirms that this terminal and described base station disconnect.

4. method according to claim 1, is characterized in that, also comprises:

The mark of self is not received in described terminal judges heartbeat frame, after determining to disconnect with described base station, described terminal is to described base station reporting scheduling request SR, if described terminal receives the scheduling authorization of described base station, then finally confirm that this terminal and described base station keep connected state, continue to keep monitoring heartbeat message.

5. a heartbeat sending method, is characterized in that, comprising:

In terminal and base station reciprocal process, described base station sends heartbeat message to described terminal, and described heartbeat message comprises the mark of all terminals keeping connected state in described base station with this base station,

Determine whether this terminal is connected with described base station to make described terminal according to described heartbeat message.

6. method according to claim 5, is characterized in that, described base station sends heartbeat message to described terminal, and described heartbeat message comprises in described base station and keeps with this base station the mark of all terminals of connected state to comprise:

If keep the terminal number of connected state to be no more than first threshold M in described base station with this base station,

Then described base station t in one-period T ₀moment sends a heartbeat frame to described terminal, carries the mark of all terminals keeping connected state in described base station with this base station in a described heartbeat frame;

If keep the terminal number of connected state to exceed first threshold M in described base station with this base station, then described base station t in a continuous P cycle T ₀moment sends P heartbeat frame continuously to described terminal, described each heartbeat frame carries the mark of the terminal keeping connected state in the described base station of part with this base station, the mark of all terminals keeping connected state in described base station with this base station is carried in a described continuous P heartbeat frame, P > 1, base station send one take turns P heartbeat frame after, continue next round again to send, circulation sends.

7. a terminal, is characterized in that, comprising:

Receiving element, for the reciprocal process of base station, receive the heartbeat message that described base station sends, described heartbeat message comprises the mark of all terminals keeping connected state in described base station with this base station;

Judging unit, for judging the mark that whether there is this terminal in the heartbeat message that described receiving element receives;

Determining unit, during for there is not the mark of this terminal in determining at described judging unit the heartbeat message that described receiving element receives, determines that terminal and described base station disconnect.

8. terminal according to claim 7, is characterized in that, also comprises:

Transmitting element, after disconnecting in described determining unit determination terminal and described base station, sends dispatch request SR to described base station;

Described receiving element, also for receiving the scheduling authorization that described base station sends;

Described judging unit, also for judging whether described receiving element receives the scheduling authorization of described base station transmission;

Described determining unit, also for determining that at described judging unit described receiving element does not receive the scheduling authorization of described base station transmission, final confirmation terminal and described base station disconnect.

9. a base station, is characterized in that, comprising:

Transmitting element, for with the reciprocal process of terminal, send heartbeat message to described terminal, described heartbeat message comprises the mark of all terminals keeping connected state in base station with this base station, determines whether this terminal is connected with described base station to make described terminal according to described heartbeat message.

10. base station according to claim 9, is characterized in that, also comprises:

Receiving element, for the dispatch request SR that receiving terminal sends;

Described transmitting element, also for after receive dispatch request SR that described terminal sends at described receiving element, sends scheduling authorization to described terminal.