CN108616934B - Communication method, terminal equipment and network side equipment - Google Patents
Communication method, terminal equipment and network side equipment Download PDFInfo
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- CN108616934B CN108616934B CN201611096642.1A CN201611096642A CN108616934B CN 108616934 B CN108616934 B CN 108616934B CN 201611096642 A CN201611096642 A CN 201611096642A CN 108616934 B CN108616934 B CN 108616934B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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Abstract
The invention provides a communication method, terminal equipment and network side equipment. The method comprises the following steps: a terminal receives a first message from a network side, wherein the first message indicates that a first cell currently selected by the terminal does not support the attachment without PDN connection; and if the terminal supports both the attachment without the PDN connection and the attachment with the PDN connection, sending an attachment request containing a PDN connection request to the network side based on the first message. The terminal equipment comprises a receiving unit, a first sending unit and a second sending unit, wherein the receiving unit is used for receiving a first message from a network side, and the first message indicates that a first cell currently selected by the terminal does not support the attachment without PDN connection; and a transmitting unit configured to: and if the terminal supports both the attachment without PDN connection and the attachment with PDN connection, sending an attachment request containing a PDN connection request to the network side based on the first message. The method, the terminal equipment and the network side equipment provided by the invention can optimize the signaling flow.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a communication method, a terminal device, and a network side device.
Background
The Third Generation Partnership Project (3 GPP) protocol defines an "attach without Public Data Network connection (PDN)" function, which can be used for an attach request or Tracking Area Update (TAU) request of a terminal. However, the current cell selected by the terminal may not support this functionality. In this case, the network side may inform the access stratum of the terminal that the current cell does not support the "attach without PDN connection" function. In the existing communication method, although the access stratum in the terminal forwards this message to the non-access stratum, the non-access stratum still sends an attach request, which does not contain a PDN connection request, to the network side. Because the current cell does not support the 'attach without PDN connection' function, the network side will reject the attach request of the terminal that does not contain the PDN connection request, so that the terminal attach fails. This wastes unnecessary signaling flow.
Disclosure of Invention
The invention solves the problems that: and the signaling flow in communication is optimized, so that the communication efficiency is improved, and the communication time, the battery and the network resource are saved.
The embodiment of the invention provides a communication method, which comprises the following steps: a terminal receives a first message from a network side, wherein the first message indicates that a first cell currently selected by the terminal does not support the attachment without PDN connection; and if the terminal supports both the attachment without the PDN connection and the attachment with the PDN connection, sending an attachment request containing a PDN connection request to the network side based on the first message.
Optionally, the communication method further includes: and establishing PDN connection with the network side, and completing the attachment of the current first cell.
Optionally, the communication method further includes: and when the terminal moves from the first cell to a second cell supporting the attachment without PDN connection, sending a TAU request to the network side.
Optionally, the communication method further includes: and requesting the network side to disconnect the PDN connection.
Optionally, the communication method further includes: when the terminal moves from the second cell to a third cell which does not support the attachment without PDN connection, sending a detach request of the second cell and an attach request containing a PDN connection request to the network side to attach to the third cell.
Optionally, the communication method further includes: when the terminal moves from the second cell to a third cell which does not support the attachment of the PDN-free connection, sending a TAU request to the network side to indicate that the third cell does not support the attachment of the PDN-free connection.
Optionally, the communication method further includes: and sending a PDN connection request to the network side before or after the sending of the TAU request.
Optionally, the communication method further includes: and if the terminal only supports the attachment without the PDN connection, executing a cell selection process to complete the attachment in a fourth cell, wherein the fourth cell supports the attachment without the PDN connection.
Optionally, the communication method further includes: performing a cell selection procedure when the terminal moves from the fourth cell to a fifth cell that does not support attachment without a PDN connection.
The embodiment of the invention provides a communication method, which comprises the following steps: sending a first message to a terminal, wherein the first message indicates that a first cell currently selected by the terminal does not support the attachment without PDN connection; and receiving an attach request including a PDN connection request from the terminal when the terminal supports both an attach without a PDN connection and an attach with a PDN connection.
Optionally, the communication method further includes: and establishing a PDN connection with the terminal, and enabling the terminal to complete the attachment of the current first cell.
Optionally, the communication method further includes: receiving a TAU request from the terminal when the terminal moves from the first cell to a second cell supporting attachment without a PDN connection.
Optionally, the communication method further includes: receiving a request for disconnection of a PDN connection from the terminal.
Optionally, the communication method further includes: and disconnecting the PDN connection with the terminal.
Optionally, the communication method further includes: when the terminal moves from the second cell to a third cell which does not support attachment without PDN connection, a detach request sent by the terminal to remove attachment in the second cell and an attach request containing a PDN connection request sent to attach in the third cell are received.
Optionally, the communication method further includes: receiving a TAU request from the terminal when the terminal moves from the second cell to a third cell that does not support attachment without a PDN connection.
Optionally, the communication method further includes: receiving a PDN connection request from the terminal before or after receiving the TAU request.
Optionally, the communication method further includes: initiate a detach procedure or initiate a default evolved packet system bearer context activation procedure.
Optionally, the communication method further includes: receiving an attach request from the terminal that does not include a PDN connection request, the request being sent to enable an attach at a fourth cell that supports an attach with no PDN connection when the terminal supports only an attach with no PDN connection.
An embodiment of the present invention further provides a terminal device, including: a receiving unit, configured to receive a first message from a network side, where the first message indicates that a first cell currently selected by the terminal device does not support an attach without PDN connection; and a transmitting unit configured to: and if the terminal equipment supports both the attachment without PDN connection and the attachment with PDN connection, sending an attachment request containing a PDN connection request to the network side based on the first message.
Optionally, the terminal device further includes a processing unit, configured to establish a PDN connection with the network side, and complete the attachment of the current first cell.
Optionally, the sending unit is further configured to: and when the terminal equipment moves from the first cell to a second cell supporting the attachment without PDN connection, sending a TAU request to the network side.
Optionally, the sending unit is further configured to: and sending a request for disconnecting the PDN connection to the network side.
Optionally, the sending unit is further configured to: when the terminal equipment moves from the second cell to a third cell which does not support the attachment without PDN connection, a detach request of the second cell and an attach request containing a PDN connection request are sent to the network side to attach to the third cell.
Optionally, the sending unit is further configured to: when the terminal equipment moves from the second cell to a third cell which does not support the attachment of the PDN-free connection, sending a TAU request to the network side to indicate that the third cell does not support the attachment of the PDN-free connection.
Optionally, the sending unit is further configured to: and before or after sending the TAU request, sending a PDN connection request to the network side.
Optionally, the processing unit is further configured to: and if the terminal equipment only supports the attachment without the PDN connection, executing a cell selection process to complete the attachment in a fourth cell, wherein the fourth cell supports the attachment without the PDN connection.
Optionally, the processing unit is further configured to: performing a cell selection procedure when the terminal device moves from the fourth cell to a fifth cell that does not support attachment without a PDN connection.
An embodiment of the present invention further provides a network side device, including: a sending unit, configured to send a first message to a terminal device, where the first message indicates that a first cell currently selected by the terminal device does not support an attach without PDN connection; a receiving unit configured to: when the terminal device supports both non-PDN connection and PDN connection attachment, receiving an attachment request containing a PDN connection request from the terminal device.
Optionally, the network side device further includes a processing unit, configured to establish a PDN connection with the terminal device, and enable the terminal device to complete the attach to the current first cell.
Optionally, the receiving unit is further configured to: receiving a TAU request from the terminal device when the terminal device moves from the first cell to a second cell supporting an attachment without a PDN connection.
Optionally, the receiving unit is further configured to: receiving a request for disconnection of a PDN connection from the terminal device.
Optionally, the processing unit is further configured to: and directly disconnecting the PDN connection with the terminal.
Optionally, the receiving unit is further configured to: when the terminal equipment moves from the second cell to a third cell which does not support the attachment without PDN connection, receiving a detach request sent by the terminal equipment for removing the attachment of the second cell and an attach request containing a PDN connection request sent for attaching to the third cell.
Optionally, the receiving unit is further configured to: receiving a TAU request from the terminal device when the terminal device moves from the second cell to a third cell that does not support attachment without a PDN connection.
Optionally, the receiving unit is further configured to: and receiving a PDN connection request from the terminal equipment.
Optionally, the processing unit is further configured to: initiate a detach procedure or initiate a default evolved packet system bearer context activation procedure.
Optionally, the receiving unit is further configured to: receiving an attach request from the terminal device that does not include a PDN connection request, the request being sent to enable attachment in a fourth cell that supports attachment of no PDN connection when the terminal device supports only attachment of no PDN connection.
Compared with the prior art, the technical scheme of the invention has the following advantages:
in the method and the apparatus provided in the embodiments of the present invention, when a network side informs a terminal that a currently selected cell does not support PDN connection-less attach, if the terminal supports both PDN connection-less attach and PDN connection-holding attach, the terminal directly sends an attach request including a PDN connection request to the network side. Therefore, the terminal utilizes the message which is sent by the network side and indicates that the current cell does not support the attachment without PDN connection, so that the waste of a signaling flow caused by the fact that the terminal still sends an attachment request without a PDN connection request to the network side under the condition that the current cell does not support the attachment without PDN connection in the prior art is avoided, the signaling flow in communication is optimized, the communication efficiency is improved, and the communication time, the battery and the network resource are saved.
Further, if the terminal supports both the attach with PDN connection and the attach without PDN connection, a TAU procedure is performed when the terminal moves from the first cell that does not support the attach with PDN connection to a second cell that supports the attach with PDN connection. In some embodiments, the terminal also requests disconnection of the PDN connection. It follows that when the terminal moves from the first cell not supporting an attachment without a PDN connection to the second cell supporting an attachment without a PDN connection, a TAU procedure may be performed and/or a disconnection of the PDN connection may be requested to attach to the second cell.
Further, if the terminal supports both PDN connectivity and PDN connectivity, when the terminal moves from the second cell supporting PDN connectivity to a third cell not supporting PDN connectivity, the terminal sends a detach request of the second cell and an attach request including a PDN connectivity request to the network side to attach to the third cell. In some embodiments, a TAU request is sent to the network side to indicate that the third cell does not support attach without a PDN connection. In some embodiments, a PDN connection request is also sent to the network side. It can be seen that, when the terminal moves from the second cell supporting the attach without PDN connection to the third cell not supporting the attach without PDN connection, a detach request or a TAU request and/or a PDN connection request may be sent to the network side to attach to the third cell.
Further, when the network side informs that the cell currently selected by the terminal does not support the attach without PDN connection, if the terminal only supports the attach without PDN connection, a cell selection procedure is performed, that is, a fourth cell supporting the attach without PDN connection is reselected, thereby completing the attach.
Further, if the terminal only supports the attach with no PDN connection, when the terminal moves from the fourth cell supporting the attach with no PDN connection to the fifth cell not supporting the attach with no PDN connection, a cell selection procedure may be performed, that is, other cells supporting the attach with no PDN connection may be reselected to complete the attach.
Drawings
Fig. 1 is a flowchart illustrating a communication method according to an embodiment of the present invention;
fig. 2 is a flow chart of a communication method according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating a communication method according to still another embodiment of the present invention;
fig. 4 is a flowchart illustrating a communication method according to another embodiment of the present invention;
fig. 5 is a flowchart illustrating a communication method according to another embodiment of the present invention;
fig. 6 is a flowchart illustrating a communication method according to still another embodiment of the present invention;
fig. 7 is a flowchart illustrating a communication method according to another embodiment of the present invention;
fig. 8 is a block diagram of a terminal device according to an embodiment of the present invention; and
fig. 9 is a block diagram of a network device according to an embodiment of the present invention.
Detailed Description
As mentioned in the background, in the prior art, although the network side may inform the terminal that the current cell does not support the "attach without PDN connection" function, the terminal still sends an attach request without PDN connection request to the network side. Because the current cell does not support the 'attach without PDN connection' function, the network side will reject the attach request of the terminal that does not contain the PDN connection request, so that the terminal attach fails. This wastes unnecessary signaling flow.
The embodiment of the invention provides a new communication method, and a terminal avoids the waste of a signaling flow in the prior art and optimizes the signaling flow in communication by using a message which is sent by a network side and indicates that the current cell does not support the attachment without PDN connection, thereby improving the communication efficiency and saving the communication time, the battery and the network resources.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, fig. 1 shows a flowchart of a communication method 100 according to an embodiment of the present invention. The method 100 comprises:
step S101, a terminal receives a first message from a network side, wherein the first message indicates that a first cell currently selected by the terminal does not support the attachment without PDN connection; and
step S102, if the terminal supports both the attachment without PDN connection and the attachment with PDN connection, based on the first message, sending an attachment request including a PDN connection request to the network side.
In some embodiments, after receiving the attach request containing the PDN connection request sent by the terminal, the network side grants the PDN connection request and the attach request, so that the terminal establishes a PDN connection with the network side and completes the attach to the current first cell.
As can be seen from the above steps, in some embodiments, the terminal uses the first message sent by the network side, so as to avoid the waste of a signaling flow caused by the fact that the terminal still sends an attach request not including a PDN connection request to the network side under the condition that the current cell is known not to support the attach without PDN connection in the prior art, thereby optimizing the signaling flow in communication, improving communication efficiency, and saving communication time, battery, and network resources.
Referring to fig. 2, fig. 2 shows a flowchart of a communication method 200 according to another embodiment of the present invention. The method 200 comprises the following steps:
s201, a terminal receives a first message from a network side, wherein the first message indicates that a first cell currently selected by the terminal does not support the attachment without PDN connection; and
s202, if the terminal only supports the attachment without PDN connection, executing a cell selection process to complete the attachment in a second cell, wherein the second cell supports the attachment without PDN connection.
As can be seen from the foregoing steps, in some embodiments, when the terminal only supports attach without PDN connection, through the first message sent by the network side, the terminal knows that the first cell where the terminal is currently located does not support attach without PDN connection, and cannot attach to the first cell, so it performs a cell selection procedure to select another cell supporting attach without PDN connection, for example, the second cell, and then completes the attach procedure.
An embodiment of the present invention further provides a communication method when the terminal moves from the attached cell that does not support the PDN-less connection to the cell that supports the PDN-less connection.
In some embodiments, the terminal supports both an attachment without and an attachment with a PDN connection. The terminal has attached to a cell that does not support attachment without a PDN connection, such as the first cell mentioned in the communication method 100 in the previous embodiment.
Referring to fig. 3, fig. 3 shows a flowchart of a communication method 300 provided by the present embodiment. The method 300 includes:
s301, when the terminal moves from the first cell to a third cell supporting the attachment without PDN connection, sending a TAU request to a network side; and
s302, requesting the network side to disconnect the PDN connection.
The step S302 is optional, and in some embodiments, the PDN connection may also be directly disconnected by the network side.
An embodiment of the present invention further provides a communication method when the terminal moves from the attached cell supporting the PDN-less connection to the cell not supporting the PDN-less connection.
In some embodiments, the terminal supports both an attachment without and an attachment with a PDN connection. The terminal has attached to a cell supporting attachment without a PDN connection, such as the second cell mentioned in the communication method 200 in the previous embodiment.
Referring to fig. 4, fig. 4 shows a flow chart of a communication method 400 provided by the present embodiment. The method 400 includes:
s401, when the terminal moves from the second cell to a fourth cell which does not support the attachment without PDN connection, a detach request of the second cell is sent to a network side; and
s402, sending an attach request containing a PDN connection request to the network side to attach to the fourth cell.
Referring to fig. 5, fig. 5 shows a flow diagram of a communication method 500 provided by another embodiment. The method 500 comprises:
s501, when the terminal moves from the second cell to a fourth cell which does not support the attachment without PDN connection, a TAU request is sent to a network side to indicate that the fourth cell does not support the attachment without PDN connection; and
s502, a PDN connection request is sent to the network side.
In some embodiments, the step S502 is optional, and may be performed either before or after the step S501.
The above-described methods 400 and 500 are both premised on the terminal supporting both an attach with no PDN connection and an attach with a PDN connection.
In some embodiments, the terminal may only support an attach without PDN connection and it is already attached to a cell supporting an attach without PDN connection, such as the second cell mentioned in the communication method 200 in the previous embodiment. Then, when the terminal moves from the second cell to a fourth cell that does not support attachment of no PDN connection, a cell selection procedure may be performed, i.e. the fourth cell supporting attachment of no PDN connection is reselected, thereby completing attachment.
The performer of the method provided by the above embodiments may be a terminal. The embodiment of the invention also provides a communication method executed by the network side.
Referring to fig. 6, fig. 6 shows a flowchart of a communication method 600 according to an embodiment of the present invention. The method 600 comprises:
s601, sending a first message to a terminal, wherein the first message indicates that a first cell currently selected by the terminal does not support the attachment without PDN connection; and
s602, when the terminal supports both the attachment without PDN connection and the attachment with PDN connection, receiving an attachment request containing a PDN connection request from the terminal.
In some embodiments, after receiving the attach request including the PDN connection request sent by the terminal, the network side grants the PDN connection request and the attach request, thereby establishing a PDN connection with the terminal and enabling the terminal to complete an attach in the current first cell.
It can be seen from the above steps that, the first message sent by the network side is utilized by the terminal, and the terminal does not send an attach request not containing a PDN connection request to the network side, thereby avoiding a waste of a signaling flow in the prior art, optimizing the signaling flow in communication, improving communication efficiency, and saving communication time, battery, and network resources.
Referring to fig. 7, fig. 7 is a flow chart of a communication method 700 according to another embodiment of the invention. The method 700 comprises:
s701, sending a first message to a terminal, wherein the first message indicates that a first cell currently selected by the terminal does not support the attachment without PDN connection; and
s702, receiving an attach request without PDN connection request from the terminal, wherein the request is sent for realizing the attach in a second cell when the terminal only supports the attach without PDN connection, and the second cell supports the attach without PDN connection.
As can be seen from the above steps, in some embodiments, after the first message sent by the network side is received by the terminal that only supports the attach without PDN connection, the terminal knows that it cannot attach to the current first cell, and performs a cell selection procedure to attach to the second cell that supports the attach without PDN connection.
The embodiment of the invention also provides a communication method executed by the network side. The communication method comprises the following steps: receiving a TAU request from a terminal when the terminal moves from a first cell that does not support attachment with PDN-free connection to a third cell that supports attachment with PDN-free connection. In this embodiment, the terminal supports both the attach without PDN connection and the attach with PDN connection.
In some embodiments, the communication method further comprises: receiving a request for disconnection of a PDN connection from the terminal.
In some embodiments, the communication method further comprises: and the network side directly disconnects the PDN connection.
The embodiment of the invention also provides a communication method executed by the network side. The communication method comprises the following steps: when the terminal moves from a second cell supporting attachment without PDN connection to a fourth cell not supporting attachment without PDN connection, a detach request sent by the terminal for removing attachment at the second cell and an attach request containing a PDN connection request sent for attaching at the fourth cell are received. In this embodiment, the terminal supports both the attach without PDN connection and the attach with PDN connection.
In some embodiments, the communication method further comprises: initiate a detach procedure or initiate a default evolved packet system bearer context activation procedure.
The embodiment of the invention also provides a communication method executed by the network side. The communication method comprises the following steps: receiving a TAU request from the terminal when the terminal moves from a second cell supporting attachment without PDN connection to a fourth cell not supporting attachment without PDN connection.
In some embodiments, the communication method further comprises: receiving a PDN connection request from the terminal before or after receiving the TAU request.
In some embodiments, the communication method further comprises: initiate a detach procedure or initiate a default evolved packet system bearer context activation procedure.
Correspondingly, an embodiment of the invention also provides the terminal equipment. Referring to fig. 8, the terminal device 800 includes a receiving unit 801, a sending unit 802, and a processing unit 803.
In some embodiments, the receiving unit 801 is configured to receive a first message from a network side, where the first message indicates that the first cell currently selected by the terminal apparatus 800 does not support an attach without a PDN connection. The sending unit 802 is configured to: if the terminal device 800 supports both the PDN connection attach and the PDN connection attach, an attach request including a PDN connection request is sent to the network side based on the first message. The processing unit 803 is configured to: and establishing PDN connection with the network side, and completing the attachment of the current first cell.
In some embodiments, the sending unit 802 is further configured to: when the terminal apparatus 800 moves from the first cell to a second cell supporting attachment without PDN connection, a TAU request is sent to the network side. In some embodiments, the sending unit 802 is further configured to send a request for disconnecting a PDN connection to the network side.
In some embodiments, the sending unit 802 is further configured to: when the terminal device 800 moves from the second cell to a third cell that does not support attachment without PDN connection, a detach request of the second cell and an attach request including a PDN connection request are sent to the network side to attach to the third cell.
In some embodiments, the sending unit 802 is further configured to: when the terminal device 800 moves from the second cell to a third cell that does not support the PDN connection free attachment, a TAU request is sent to the network side to indicate that the third cell does not support the PDN connection free attachment. In some embodiments, the sending unit 802 is further configured to: and before or after sending the TAU request, sending a PDN connection request to the network side.
In some embodiments, the processing unit 803 is configured to: if the terminal device 800 only supports the attachment without the PDN connection, a cell selection procedure is performed to complete the attachment in the fourth cell, which supports the attachment without the PDN connection.
In some embodiments, the processing unit 803 is further configured to: when the terminal apparatus 800 moves from the fourth cell to a fifth cell that does not support attachment without a PDN connection, a cell selection procedure is performed.
In some embodiments, the terminal device 800 may be a mobile phone, a Personal Digital Assistant (PDA), a tablet computer, or the like.
In some embodiments, the receiving unit 801, the sending unit 802, and the processing unit 803 may include an Evolved Packet System Session Management (ESM) entity or an Evolved Packet System Mobility Management (EMM) entity.
In some embodiments, the receiving Unit 801, the transmitting Unit 802, and the Processing Unit 803 are processors, such as a Central Processing Unit (CPU), a Micro Control Unit (MCU), a Digital Signal Processor (DSP), and the like.
Correspondingly, an embodiment of the invention also provides network side equipment. Referring to fig. 9, the network side device 900 includes a sending unit 901, a receiving unit 902 and a processing unit 903.
In some embodiments, the sending unit 901 is configured to send a first message to a terminal device, where the first message indicates that a first cell currently selected by the terminal device does not support an attach without a PDN connection. The receiving unit 902 is configured to: when the terminal device supports both non-PDN connection and PDN connection attachment, receiving an attachment request containing a PDN connection request from the terminal device. The processing unit 903 is configured to: and establishing PDN connection with the terminal equipment, and enabling the terminal equipment to complete the attachment of the current first cell.
In some embodiments, the receiving unit 902 is further configured to: receiving a TAU request from the terminal device when the terminal device moves from the first cell to a second cell supporting an attachment without a PDN connection. In some embodiments, the receiving unit 902 is further configured to receive a request for disconnection of a PDN connection from the terminal device. In some embodiments, the processing unit 903 is further configured to: and directly disconnecting the PDN connection with the terminal.
In some embodiments, the receiving unit 902 is further configured to: when the terminal equipment moves from the second cell to a third cell which does not support the attachment without PDN connection, receiving a detach request sent by the terminal equipment for removing the attachment of the second cell and an attach request containing a PDN connection request sent for attaching to the third cell.
In some embodiments, the receiving unit 902 is further configured to: receiving a TAU request from the terminal device when the terminal device moves from the second cell to a third cell that does not support attachment without a PDN connection; and receiving a PDN connection request from the terminal device. In some embodiments, the receiving unit 902 is further configured to: initiate a detach procedure or initiate a default evolved packet system bearer context activation procedure.
In some embodiments, the receiving unit 902 is further configured to: receiving an attach request from the terminal device that does not include a PDN connection request, the request being sent to enable attachment in a fourth cell that supports attachment of no PDN connection when the terminal device supports only attachment of no PDN connection.
In some embodiments, the sending unit 901, the receiving unit 902 and the processing unit 903 may be a Mobility Management Entity (MME). In some embodiments, the sending unit 901, the receiving unit 902 and the processing unit 903 are processors, such as CPUs, MCUs, DSPs, etc.
In summary, according to the communication method, the terminal device, and the network side device provided in the embodiments of the present invention, when the network side informs that the cell currently selected by the terminal does not support the PDN connection-less attach, if the terminal supports both the PDN connection-less attach and the PDN connection-holding attach, the terminal directly sends an attach request including a PDN connection request to the network side. Therefore, the terminal utilizes the message which is sent by the network side and indicates that the current cell does not support the attachment without PDN connection, so that the waste of a signaling flow caused by the fact that the terminal still sends an attachment request without a PDN connection request to the network side under the condition that the current cell does not support the attachment without PDN connection in the prior art is avoided, the signaling flow in communication is optimized, the communication efficiency is improved, and the communication time, the battery and the network resource are saved.
Further, when the network side informs that the cell currently selected by the terminal does not support the attachment without the PDN connection, if the terminal only supports the attachment without the PDN connection, a cell selection procedure is performed, that is, a cell supporting the attachment without the PDN connection is reselected, thereby completing the attachment.
Further, the embodiment of the present invention also provides a communication method when the terminal moves from a cell which does not support the attachment of the PDN-free connection to a cell which supports the attachment of the PDN-free connection, and a communication method when the terminal moves from a cell which supports the attachment of the PDN-free connection to a cell which does not support the attachment of the PDN-free connection.
The communication method, the terminal device and the network side device provided by the embodiment of the invention can be used in new technology fields which may appear in the future, such as 4G technology (Long Term Evolution (LTE)) system, 5G technology and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (38)
1. A method of communication, comprising:
a terminal receives a first message from a network side, wherein the first message indicates that a first cell currently selected by the terminal does not support the attachment without public data network connection;
and if the terminal supports both the attachment without public data network connection and the attachment with public data network connection, sending an attachment request containing a public data network connection request to the network side based on the first message.
2. The communication method according to claim 1, further comprising: and establishing public data network connection with the network side, and completing the attachment of the current first cell.
3. The communication method according to claim 2, further comprising: when the terminal moves from the first cell to a second cell supporting the attachment without public data network connection, a tracking area update request is sent to the network side.
4. The communication method according to claim 3, further comprising: and requesting the network side to disconnect the public data network connection.
5. The communication method according to claim 3, further comprising: when the terminal moves from the second cell to a third cell which does not support the attachment without public data network connection, sending a detach request of the second cell and an attach request containing a public data network connection request to the network side to attach to the third cell.
6. The communication method according to claim 3, further comprising: when the terminal moves from the second cell to a third cell which does not support the attachment without public data network connection, a tracking area update request is sent to the network side to indicate that the third cell does not support the attachment without public data network connection.
7. The communication method according to claim 6, further comprising: sending a public data network connection request to the network side before or after the sending of the tracking area update request.
8. The communication method according to claim 1, further comprising: and if the terminal only supports the attachment without public data network connection, executing a cell selection process to complete the attachment in a fourth cell, wherein the fourth cell supports the attachment without public data network connection.
9. The communication method according to claim 8, further comprising: performing a cell selection procedure when the terminal moves from the fourth cell to a fifth cell that does not support attachment without a public data network connection.
10. A communication method performed by a network-side device, comprising:
sending a first message to a terminal, wherein the first message indicates that a first cell currently selected by the terminal does not support attachment without public data network connection;
when the terminal supports both an attach without a public data network connection and an attach with a public data network connection, an attach request including a public data network connection request from the terminal is received.
11. The communication method according to claim 10, further comprising: and establishing a public data network connection with the terminal, and enabling the terminal to complete the attachment of the current first cell.
12. The communication method according to claim 11, further comprising: receiving a tracking area update request from the terminal when the terminal moves from the first cell to a second cell supporting an attachment without a public data network connection.
13. The communication method according to claim 12, further comprising: a request from the terminal to disconnect a public data network connection is received.
14. The communication method according to claim 12, further comprising: and disconnecting the public data network connection with the terminal.
15. The communication method according to claim 12, further comprising: when the terminal moves from the second cell to a third cell which does not support the attachment without public data network connection, a detach request sent by the terminal for detaching the attachment in the second cell and an attach request containing the public data network connection request sent for attaching in the third cell are received.
16. The communication method according to claim 12, further comprising: receiving a tracking area update request from the terminal when the terminal moves from the second cell to a third cell that does not support attachment without a public data network connection.
17. The communication method according to claim 16, further comprising: receiving a public data network connection request from the terminal before or after receiving the tracking area update request.
18. The communication method according to claim 15 or 16, further comprising: initiate a detach procedure or initiate a default evolved packet system bearer context activation procedure.
19. The communication method according to claim 10, further comprising: receiving an attach request from the terminal that does not include a public data network connection request, the request being sent to enable an attach in a fourth cell that supports an attach without a public data network connection when the terminal supports only an attach without a public data network connection.
20. A terminal device, comprising:
a receiving unit, configured to receive a first message from a network side, where the first message indicates that a first cell currently selected by the terminal device does not support an attach without public data network connection;
a transmitting unit configured to: and if the terminal equipment supports both the attachment without public data network connection and the attachment with public data network connection, sending an attachment request containing a public data network connection request to the network side based on the first message.
21. The terminal device of claim 20, further comprising: and the processing unit is used for establishing public data network connection with the network side and completing the attachment of the current first cell.
22. The terminal device of claim 21, wherein the sending unit is further configured to: when the terminal equipment moves from the first cell to a second cell supporting attachment without public data network connection, a tracking area updating request is sent to the network side.
23. The terminal device of claim 22, wherein the sending unit is further configured to: and sending a request for disconnecting the public data network to the network side.
24. The terminal device of claim 22, wherein the sending unit is further configured to: when the terminal equipment moves from the second cell to a third cell which does not support the attachment without public data network connection, a detach request of the second cell and an attach request containing a public data network connection request are sent to the network side to attach to the third cell.
25. The terminal device of claim 22, wherein the sending unit is further configured to: when the terminal equipment moves from the second cell to a third cell which does not support the attachment without public data network connection, a tracking area updating request is sent to the network side to indicate that the third cell does not support the attachment without public data network connection.
26. The terminal device of claim 25, wherein the sending unit is further configured to: sending a public data network connection request to the network side before or after sending the tracking area update request.
27. The terminal device of claim 20, further comprising: a processing unit to: and if the terminal equipment only supports the attachment without public data network connection, executing a cell selection process to complete the attachment in a fourth cell, wherein the fourth cell supports the attachment without public data network connection.
28. The terminal device of claim 27, wherein the processing unit is further configured to: performing a cell selection procedure when the terminal device moves from the fourth cell to a fifth cell that does not support attachment without a public data network connection.
29. A network-side device, comprising:
a sending unit, configured to send a first message to a terminal device, where the first message indicates that a first cell currently selected by the terminal device does not support attachment without public data network connection;
a receiving unit configured to: when the terminal device supports both an attach without public data network connection and an attach with public data network connection, an attach request including a public data network connection request is received from the terminal device.
30. The network-side device of claim 29, further comprising a processing unit, configured to establish a public data network connection with the terminal device, and enable the terminal device to complete the attachment in the current first cell.
31. The network-side device of claim 30, wherein the receiving unit is further configured to: receiving a tracking area update request from the terminal device when the terminal device moves from the first cell to a second cell supporting an attachment without a public data network connection.
32. The network-side device of claim 31, wherein the receiving unit is further configured to: a request to disconnect a public data network connection is received from the terminal device.
33. The network-side device of claim 31, wherein the processing unit is further configured to: and directly disconnecting the public data network connection with the terminal.
34. The network-side device of claim 31, wherein the receiving unit is further configured to: when the terminal equipment moves from the second cell to a third cell which does not support the attachment without public data network connection, a detach request sent by the terminal equipment for removing the attachment of the terminal equipment in the second cell and an attach request containing the public data network connection request sent for attaching to the third cell are received.
35. The network-side device of claim 31, wherein the receiving unit is further configured to: receiving a tracking area update request from the terminal device when the terminal device moves from the second cell to a third cell that does not support attachment without a public data network connection.
36. The network-side device of claim 35, wherein the receiving unit is further configured to: and receiving a public data network connection request from the terminal equipment.
37. The network-side device of claim 35 or 36, wherein the processing unit is further configured to: initiate a detach procedure or initiate a default evolved packet system bearer context activation procedure.
38. The network-side device of claim 29, wherein the receiving unit is further configured to: receiving an attach request from the terminal device that does not include a public data network connection request, the request being sent to enable attachment in a fourth cell that supports attachment without a public data network connection when the terminal device supports only attachment without a public data network connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611096642.1A CN108616934B (en) | 2016-12-02 | 2016-12-02 | Communication method, terminal equipment and network side equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611096642.1A CN108616934B (en) | 2016-12-02 | 2016-12-02 | Communication method, terminal equipment and network side equipment |
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| Publication Number | Publication Date |
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| CN108616934A CN108616934A (en) | 2018-10-02 |
| CN108616934B true CN108616934B (en) | 2021-11-02 |
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| CN112770387B (en) * | 2020-12-22 | 2022-09-20 | 展讯半导体(成都)有限公司 | Terminal attachment processing method and device, terminal and network side equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104584671A (en) * | 2012-07-02 | 2015-04-29 | 阿尔卡特朗讯公司 | Support of data transmission in a packet mobile network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014056523A1 (en) * | 2012-10-08 | 2014-04-17 | Nokia Solutions And Networks Oy | Methods, devices, and computer program products for keeping devices attached without a default bearer |
| US9743435B2 (en) * | 2015-02-02 | 2017-08-22 | Verizon Patent And Licensing Inc. | Dynamic on-demand data network connection control service |
-
2016
- 2016-12-02 CN CN201611096642.1A patent/CN108616934B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104584671A (en) * | 2012-07-02 | 2015-04-29 | 阿尔卡特朗讯公司 | Support of data transmission in a packet mobile network |
Non-Patent Citations (2)
| Title |
|---|
| "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access";3rd Generation Partnership Project;《3GPP TS 23.401 V13.6.1 》;20160331;第5.10小节 * |
| "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS)";3rd Generation Partnership Project;《3GPP TS 24.301 V13.5.0》;20160331;第6.5小节 * |
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