U.S. patent application number 16/610255 was filed with the patent office on 2020-02-20 for information processing method and device.
This patent application is currently assigned to CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY. The applicant listed for this patent is CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY. Invention is credited to Hucheng WANG.
Application Number | 20200059832 16/610255 |
Document ID | / |
Family ID | 64016378 |
Filed Date | 2020-02-20 |
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United States Patent
Application |
20200059832 |
Kind Code |
A1 |
WANG; Hucheng |
February 20, 2020 |
INFORMATION PROCESSING METHOD AND DEVICE
Abstract
The preset disclosure provides an information processing method
and device. The information processing method is applied to a user
equipment (UE) operating in a single registration mode, and
includes: receiving assistance information from a first network;
initiating an attaching or initial registration procedure according
to the assistance information received from the first network when
moving between the first network and a second network, the first
and second networks utilizing different access technologies.
Inventors: |
WANG; Hucheng; (Beijing,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
Beijing |
|
CN |
|
|
Assignee: |
CHINA ACADEMY OF TELECOMMUNICATIONS
TECHNOLOGY
Beijing
CN
|
Family ID: |
64016378 |
Appl. No.: |
16/610255 |
Filed: |
April 24, 2018 |
PCT Filed: |
April 24, 2018 |
PCT NO: |
PCT/CN2018/084260 |
371 Date: |
November 1, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04W 36/00 20130101;
H04W 48/18 20130101; H04W 36/0022 20130101; H04W 76/25 20180201;
H04W 36/14 20130101; H04W 88/06 20130101; H04W 76/18 20180201; H04W
76/27 20180201; H04W 60/00 20130101 |
International
Class: |
H04W 36/00 20060101
H04W036/00; H04W 60/00 20060101 H04W060/00; H04W 36/14 20060101
H04W036/14; H04W 76/25 20060101 H04W076/25; H04W 76/27 20060101
H04W076/27; H04W 76/18 20060101 H04W076/18 |
Foreign Application Data
Date |
Code |
Application Number |
May 2, 2017 |
CN |
201710301629.3 |
Claims
1. An information processing method applied to a user equipment
(UE) operating in a single registration mode, comprising: receiving
assistance information from a first network; initiating an
attaching or initial registration procedure according to the
assistance information received from the first network when the UE
is moving between the first network and a second network, the first
and second networks utilizing different access technologies.
2. The method according to claim 1, wherein the step of initiating
an attaching or initial registration procedure according to the
assistance information received from the first network when the UE
is moving between the first network and a second network comprises:
determining whether the UE in single registration mode can be
supported in the first network according to the assistance
information received from the first network; initiating the
attaching or initial registration procedure when accessing the
second network, if the UE in single registration mode cannot be
supported in the first network.
3. The method according to claim 2, wherein the assistance
information comprises: NAS level indication or registration mode
negotiated on the NAS level; the step of determining whether the UE
in single registration mode can be supported in the first network
according to the assistance information received from the first
network comprises: determining whether the UE in single
registration mode can be supported in the first network according
to the result or indication of the registration mode
negotiation.
4. The method according to claim 2, wherein the assistance
information comprises: neighborhood measurement information; the
step of determining whether the UE in single registration mode can
be supported in the first network according to the assistance
information received from the first network comprises: determining
that the UE in single registration mode cannot be supported in the
first network, if the neighborhood measurement information does not
comprise information about any cell of the access technology which
the second network utilizes.
5. The method according to claim I, wherein the step of initiating
an attaching or initial registration procedure according to the
assistance information received from a first network when the UE is
moving between the first network and a second network comprises:
determining whether an access to the second network is needed
according to the assistance information received from the first
network; initiating the attaching or initial registration procedure
when accessing the second network, if the access to the second
network is needed.
6. The method according to claim 5, wherein the assistance
information comprises: an instruction sent by a base station in the
first network through an RRC message, the instruction comprising:
information about cells of the second network; or an indication
that switching among different access technologies is not
supported; or an instruction of performing a reselection to the
second network. -NP
7. The method according to claim 6, wherein the RRC message is an
RRC connection release message.
8. The method according to claim 7, wherein the instruction is sent
when the first network fails to switch among different access
technologies.
9. The method according to claim 2, wherein the assistance
information comprises: an instruction sent by a core network in the
first network through an NAS message, the instruction comprising:
an instruction of performing a reselection to the second
network.
10. An information processing method applied to a network-side
equipment of a first network, comprising: acquiring assistance
information; sending the assistance information to a UE operating
in a single registration mode, the UE initiating an attaching or
initial registration procedure according to the assistance
information received from the first network when moving between the
first network and a second network.
11. The method according to claim 10, wherein, the assistance
information comprises: NAS level indication or registration mode
negotiated on the NAS level; or the assistance information
comprises: neighborhood measurement information; or the assistance
information comprises: an instruction sent by a base station in the
first network through an RRC message, the instruction comprising:
information about cells of the second network; or an indication
that switching among different access technologies is not
supported; or an instruction of performing a reselection to the
second network; or the assistance information comprises: an
instruction sent by a core network in the first network through an
NAS message, the instruction comprising: an instruction of
performing a reselection to the second network.
12. The method according to claim 11, wherein the RRC message is an
RRC connection release message.
13. The method according to claim 12, wherein the instruction sent
by the base station in the first network through the RRC message is
sent when the first network fails to switch among different access
technologies.
14. A user equipment (UE) operating in a single registration mode,
comprising a processor, a storage and a transceiver, wherein the
transceiver is configured to receive and send data, and the
processor is configured to read a program in the storage to execute
the following processes: receiving assistance information from a
first network by the transceiver: initiating an attaching or
initial registration procedure according to the assistance
information received from the first network when the user equipment
is moving between the first network and a second network, the first
and second networks utilizing different access technologies.
15. The UE according to claim 14, wherein the processor is
configured to: determine whether the UE in single registration mode
can be supported in the first network according to the assistance
information received from the first network; initiate the attaching
or initial registration procedure when accessing the second
network, if the UE in single registration mode cannot be supported
in the first network.
16. The UE according to claim 15, wherein the assistance
information comprises: NAS level indication or registration mode
negotiated on the NAS level; processor is configured to determine
whether the UE in single registration mode can be supported in the
first network according to the result or indication of the
registration mode negotiation; or, the assistance information
comprises: neighborhood measurement information; the processor is
configured to determine that the UE in single registration mode
cannot be supported in the first network, if the neighborhood
measurement information does not comprise information about any
cell of the access technology which the second network
utilizes.
17. (canceled)
18. The UE according to claim 14, wherein the processor is
configured to: determine whether an access to the second network is
needed according to the assistance information received from the
first network; initiate the attaching or initial registration
procedure when accessing the second network, if the access to the
second network is needed.
19. The UE according to claim 18, wherein the assistance
information comprises: an instruction sent by a base station in the
first network through an RRC message, the instruction comprising:
information about a target cell of a different access technology;
or an indication that switching among different access technologies
is not supported; or an instruction of performing a reselection to
the second network.
20-22. (canceled)
23. A network-side equipment of a first network, comprising: a
processor, a storage and a transceiver, wherein the processor is
configured to read a program in the storage to execute the method
according to claim 10.
24. The network-side equipment according to claim 23, wherein, the
assistance information comprises: NAS level indication or
registration mode negotiated on the NAS level; or the assistance
information comprises: neighborhood measurement information; or the
assistance information comprises: an instruction sent by a base
station in the first network through an RRC message, the
instruction comprising: information about cells of the second
network; or an indication that switching among different access
technologies is not supported; or an instruction of performing a
reselection to the second network; or the assistance information
comprises: an instruction sent by a core network in the first
network through an NAS message, the instruction comprising: an
instruction of performing a reselection to the second network.
25-28. (canceled)
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] The present application claims the priority of Chinese
Patent Application No. 201710301629.3 filed on May 2, 2017, the
contents of which are incorporated herein in their entirety by
reference.
TECHNICAL FIELD
[0002] The present disclosure relates to the field of communication
technology, in particular to an information processing method and
device.
BACKGROUND
[0003] With the development of communication technologies, 5G
networks need to support an interoperation with Long Term Evolution
(LTE) networks. However, the interoperability between the 5G Core
Network (5GC) and the Evolved Packet Core (EPC) is completely
determined by the operator's deployment, that is, whether the Nx
interface is supported is determined by the operator. However, some
terminal-side manufacturers do not prefer to support the dual
registration mode which may affect the terminal. Therefore, there
may be a scenario where the terminal capability does not match the
network capability. That is, the terminal supports merely the
single registration mode, and the network does not support the Nx
interface. In this case, when the UE moves between the 5G and LTE
networks, the mobility management process may fail.
SUMMARY
[0004] In view of this, the present disclosure provides an
information processing method and device to avoid the problem of
mobility management failure when a terminal is moving among
networks of different access technologies, thereby ensuring the
communication quality.
[0005] To solve the above problem, the present disclosure provides
an information processing method applied to a user equipment (UE)
operating in a single registration mode, including: receiving
assistance information from a first network; initiating an
attaching or initial registration procedure according to the
assistance information received from the first network when the UE
is moving between the first network and a second network, the first
and second networks utilizing different access technologies.
[0006] In some alternative embodiments, the step of initiating an
attaching or initial registration procedure according to the
assistance information received from the first network when the UE
is moving between the first network and a second network includes:
determining whether the UE in single registration mode can be
supported in the first network according to the assistance
information received from the first network; initiating the
attaching or initial registration procedure when accessing the
second network, if the UE in single registration mode cannot be
supported in the first network.
[0007] In some alternative embodiments, the assistance information
includes: NAS level indication or registration mode negotiated on
the NAS level; the step of determining whether the UE in single
registration mode can be supported in the first network according
to the assistance information received from the first network
includes: determining whether the UE in single registration mode
can be supported in the first network according to the result or
indication of the registration mode negotiation.
[0008] In some alternative embodiments, the assistance information
includes: neighborhood measurement information; the step of
determining whether the UE in single registration mode can be
supported in the first network according to the assistance
information received from the first network includes: determining
that the UE in single registration mode cannot be supported in the
first network, if the neighborhood measurement information does not
include information about any cell of the access technology which
the second network utilizes.
[0009] In some alternative embodiments, the step of initiating an
attaching or initial registration procedure according to the
assistance information received from a first network when the UE is
moving between the first network and a second network includes:
determining whether an access to the second network is needed
according to the assistance information received from the first
network; initiating the attaching or initial registration procedure
when accessing the second network, if the access to the second
network is needed.
[0010] In some alternative embodiments, the assistance information
includes: an instruction sent by a base station in the first
network through an RRC message, the instruction including:
information about cells of the second network; or an indication
that switching among different access technologies is not
supported; or an instruction of performing a reselection to the
second network.
[0011] In some alternative embodiments, the RRC message is an RRC
connection release message.
[0012] In some alternative embodiments, the instruction is sent
when the first network fails to switch among different access
technologies.
[0013] In some alternative embodiments, the assistance information
includes: an instruction sent by a core network in the first
network through an NAS message, the instruction including: an
instruction of performing a reselection to the second network.
[0014] In a second aspect, an embodiment of the present disclosure
provides an information processing method applied to a network-side
equipment of a first network, including: acquiring assistance
information; sending the assistance information to a UE operating
in a single registration mode, the UE initiating an attaching or
initial registration procedure according to the assistance
information received from the first network when moving between the
first network and a second network.
[0015] In some alternative embodiments, the assistance information
includes: NAS level indication or registration mode negotiated on
the NAS level; or the assistance information includes: neighborhood
measurement information; or the assistance information includes: an
instruction sent by a base station in the first network through an
RRC message, the instruction including: information about cells of
the second network; or an indication that switching among different
access technologies is not supported; or an instruction of
performing a reselection to the second network; or the assistance
information includes: an instruction sent by a core network in the
first network through an NAS message, the instruction including: an
instruction of performing a reselection to the second network.
[0016] In some alternative embodiments, the RRC message is an RRC
connection release message.
[0017] In some alternative embodiments, the instruction sent by the
base station in the first network through the RRC message is sent
when the first network fails to switch among different access
technologies.
[0018] In a third aspect, an embodiment of the present disclosure
provides an information processing device applied to a user
equipment (UE) operating in a single registration mode, including:
a receiving module for receiving assistance information from a
first network; a processing module for initiating an attaching or
initial registration procedure according to the assistance
information received from the first network when the UE is moving
between the first network and a second network, the first and
second networks utilizing different access technologies.
[0019] In some alternative embodiments, the processing module
includes: a determination sub-module for determining whether the UE
in single registration mode can be supported in the first network
according to the assistance information received from the first
network; a processing sub-module for initiating the attaching or
initial registration procedure when accessing the second network,
if the UE in single registration mode cannot be supported in the
first network.
[0020] In some alternative embodiments, the assistance information
includes: NAS level indication or registration mode negotiated on
the NAS level; the determination sub-module is configured to
determine whether the UE in single registration mode can be
supported in the first network according to the result or
indication of the registration mode negotiation.
[0021] In some alternative embodiments, the assistance information
includes: neighborhood measurement information; the determination
sub-module is configured to determine that the UE in single
registration mode cannot be supported in the first network, if the
neighborhood measurement information does not include information
about any cell of the access technology which the second network
utilizes.
[0022] In some alternative embodiments, the processing module
includes: a determination sub-module for determining whether an
access to the second network is needed according to the assistance
information received from the first network; a processing
sub-module for initiating the attaching or initial registration
procedure when accessing the second network, if the access to the
second network is needed.
[0023] In some alternative embodiments, the assistance information
includes: an instruction sent by a base station in the first
network through an RRC message, the instruction including:
information about cells of the second network; or an indication
that switching among different access technologies is not
supported; or an instruction of performing a reselection to the
second network.
[0024] In some alternative embodiments, the RRC message is an RRC
connection release message.
[0025] In some alternative embodiments, the instruction is sent
when the first network fails to switch among different access
technologies.
[0026] In some alternative embodiments, the assistance information
includes: an instruction sent by a core network in the first
network through an NAS message, the instruction including: an
instruction of performing a reselection to the second network.
[0027] In a fourth aspect, an embodiment of the present disclosure
provides an information processing device applied to a network-side
equipment of a first network, including: an acquisition module for
acquiring assistance information; a sending module for sending the
assistance information to a UE operating in a single registration
mode, the UE initiating an attaching or initial registration
procedure according to the assistance information received from the
first network when moving between the first network and a second
network.
[0028] In some alternative embodiments, the assistance information
includes: NAS level indication or registration mode negotiated on
the NAS level; or
[0029] the assistance information includes: neighborhood
measurement information; or the assistance information includes: an
instruction sent by a base station in the first network through an
RRC message, the instruction including: information about cells of
the second network; or an indication that switching among different
access technologies is not supported; or an instruction of
performing a reselection to the second network; or the assistance
information includes: an instruction sent by a core network in the
first network through an NAS message, the instruction including: an
instruction of performing a reselection to the second network.
[0030] In some alternative embodiments, the RRC message is an RRC
connection release message.
[0031] In some alternative embodiments, the instruction sent by the
base station in the first network through the RRC message is sent
when the first network fails to switch among different access
technologies.
[0032] In a fifth aspect, an embodiment of the present disclosure
provides a user equipment including a processor, a storage and a
transceiver, wherein, the processor is configured to read a program
in the storage to execute processes as follows: receiving
assistance information from a first network by the transceiver;
initiating an attaching or initial registration procedure according
to the assistance information received from the first network when
the user equipment is moving between the first network and a second
network, the first and second networks utilizing different access
technologies; the transceiver is configured to receive and send
data.
[0033] In a sixth aspect, an embodiment of the present disclosure
provides a network-side equipment including a processor, a storage
and a transceiver, wherein, the processor is configured to read a
program in the storage to execute processes as follows: receiving
assistance information; sending the assistance information to a UE
operating in a single registration mode by the transceiver, the UE
initiating an attaching or initial registration procedure according
to the assistance information received from the first network when
moving between the first network and a second network; the
transceiver is configured to receive and send data.
[0034] The beneficial effects of the foregoing technical solutions
of the present disclosure are as follows: in the embodiments of the
present disclosure, when moving between the first network and the
second network, the UE initiates an attaching or initial
registration procedure according to the assistance information of
the first network, thereby avoiding a problem of mobility
management failure when the UE is moving among networks of
different access technologies, and ensuring the communication
quality.
BRIEF DESCRIPTION OF THE DRAWINGS
[0035] FIG. 1 is a schematic diagram of a network architecture
model supporting an interoperation between 5G networks and LTE
networks;
[0036] FIG. 2 is a flowchart of an information processing method
according to an embodiment of the present disclosure;
[0037] FIG. 3 is a flowchart of an information processing method
according to an embodiment of the present disclosure;
[0038] FIG. 4 is a flowchart of an information processing method
according to an embodiment of the present disclosure;
[0039] FIG. 5 is a flowchart of an information processing method
according to an embodiment of the present disclosure;
[0040] FIG. 6 is a flowchart of an information processing method
according to an embodiment of the present disclosure;
[0041] FIG. 7 is a flowchart of an information processing method
according to an embodiment of the present disclosure;
[0042] FIG. 8 is a flowchart of an information processing method
according to an embodiment of the present disclosure;
[0043] FIG. 9 is a schematic diagram of an information processing
device according to an embodiment of the present disclosure;
[0044] FIG. 10 is a schematic diagram of an information processing
device according to an embodiment of the present disclosure;
[0045] FIG. 11 is a schematic diagram of a network-side equipment
according to an embodiment of the present disclosure; and
[0046] FIG. 12 is a schematic diagram of a user equipment according
to an embodiment of the present disclosure.
DETAILED DESCRIPTION
[0047] The specific embodiments of the present disclosure may be
further described hereinafter in details in conjunction with the
drawings. The embodiments described below are merely an
illustration of the present disclosure rather than a limitation
thereof.
[0048] FIG. 1 is a schematic diagram of a network architecture
model supporting an interoperation between 5G networks and LTE
networks.
[0049] In FIG. 1, an Nx interface between an MME (Mobility
Management Entity) and a 5G System (5GS) AMF (Access and Mobility
Management Function) is optionally supported. When the network
supports the Nx interface, the network can support the switching
between the 5G network and the LTE network. In this case, the
context information of a UE (User Equipment) needs to be
transmitted between the MME and the AMF, which includes the context
of the mobility and the context of the session connection. When the
UE accesses such a network supporting the Nx interface, the network
may be configured in a single registration mode.
[0050] When the network does not support the Nx interface, the
switching between the 5G network and the LTE network is not
supported. In order to support the interoperation, the network
needs to require the terminal to perform dual registration mode,
that is, to be registered to both the LTE network and the 5G
network. Considering the support for service continuity in the dual
registration mode, the SMF (Session Management Function) of the
control plane in the network is required to simultaneously support
the functions of the PDN Gate Way-Control plane (PGW-C). In this
way, the "HO registration" can ensure that when the UE moves
between the LTE network and the 5G network, its session connection
is always anchored on a same user plane anchor point.
[0051] The dual-registered UEs are further classified into UEs
having a single radio capability and UEs having a dual radio
capability. A single-radio terminal can only maintain one-side
session connection at the same time, that is, can only maintain the
connection in the LTE network or the connection in the 5G network.
In this way, if the terminal moves between the LTE network and the
5G network, packet loss will inevitably occur, and seamless service
continuity cannot be guaranteed. However, a dual-radio terminal can
maintain the connections in the LTE network and the 5G network at
the same time. Therefore, when it moves between the networks, the
connection can be switched in the make-before-break manner, that
is, while receiving data from the network to which is switched,
data is also received from the previous network, so that the
connection of the services can be guaranteed.
[0052] When a UE supporting the single registration mode is in an
idle state, if an E-UTRAN access is selected, the UE will perform a
TAU process. However, if the Nx interface is not supported in the
5GC network and the EPC network, the TAU process of the UE will be
rejected, which will cause the UE to perform cell reselection or
re-initiate an attaching process, thereby adding additional
signaling overhead, delaying the acquisition of network services of
the UE, particularly when the UE performs a ping-pong movement
between the 5GS network and the EPS network. For the connected UE
that supports the single registration mode, it is not yet discussed
how to deal with the situation where an Nx interface between the
5GC network and the EPC network is not supported, and a problem of
mobility management failure may also occur.
[0053] In view of this, some embodiments of the present disclosure
provide an information processing method and device to avoid the
problem of mobility management failure when a terminal is moving
among networks of different access technologies, thereby ensuring
the communication quality.
[0054] As shown in FIG. 2, an information processing method
according to an embodiment of the present disclosure is applied to
a user equipment (UE) operating in a single registration mode. The
method includes: Step 201, receiving assistance information from a
first network; Step 202, initiating an attaching or initial
registration procedure according to the assistance information
received from the first network when the UE is moving between the
first network and a second network, the first and second networks
utilizing different access technologies.
[0055] In the embodiment of the present disclosure, the initial
registration procedure refers to a registration procedure carrying
a Subscriber Permanent Identifier (SUPI) that is initiated by a
terminal.
[0056] In some embodiments, the first network is the 5G network,
and the second network is the LET network. However, it should be
noted that, with the development of technology, the first network
and the second network may also change.
[0057] In Step 202, it is determined whether the UE in single
registration mode can be supported in the first network according
to the assistance information received from the first network; for
example, it is determined whether the first network supports the Nx
interface. If the UE in single registration mode cannot be
supported in the first network, the attaching or initial
registration procedure is initiated when accessing the second
network.
[0058] In the embodiment of the present disclosure, the assistance
information includes: NAS level indication or registration mode
negotiated on the NAS level. Specifically, the step of determining
whether the UE in single registration mode can be supported in the
first network according to the assistance information received from
the first network may particularly be as follows: determining
whether the UE in single registration mode can be supported in the
first network according to the result or indication of the
registration mode negotiation. If the result or indication of the
registration mode negotiation indicates that UE in single
registration mode can be supported, it is determined that the first
network supports the UE in the single registration mode; otherwise,
it is determined that the UE in single registration mode cannot be
supported in the first network.
[0059] In the embodiment of the present disclosure, the assistance
information includes: neighborhood measurement information.
Specifically, the step of determining whether the UE in single
registration mode can be supported in the first network according
to the assistance information received from the first network may
be: determining that the UE in single registration mode cannot be
supported in the first network, if the neighborhood measurement
information does not include information about any cell of the
access technology which the second network utilizes.
[0060] In Step 202, it is determined whether an access to the
second network is needed according to the assistance information
received from the first network; if the access to the second
network is needed, the attaching or initial registration procedure
is initiated when accessing the second network. In an embodiment of
the present disclosure, the assistance information includes: an
instruction sent by a base station in the first network through a
Radio Resource Control (RRC) message. The instruction includes:
information about cells of the second network; or an indication
that switching among different access technologies is not
supported; or an instruction of performing a reselection to the
second network. In practical applications, the RRC message is an
RRC connection release message, and the instruction is sent when
the first network fails to switch among different access
technologies.
[0061] In an embodiment of the present disclosure, the assistance
information includes: an instruction sent by a core network in the
first network through an NAS message. The instruction includes: an
instruction of performing a reselection to the second network.
[0062] In the embodiment of the present disclosure, when moving
between the first network and the second network, the UE initiates
an attaching or initial registration procedure according to the
assistance information received from the first network, thereby
avoiding a problem of mobility management failure when the UE is
moving among networks of different access technologies, and
ensuring the communication quality.
[0063] As shown in FIG. 3, an information processing method
according to an embodiment of the present disclosure is applied to
a network-side equipment of a first network, and includes: Step
301, acquiring assistance information; Step 302, sending the
assistance information to a UE operating in a single registration
mode, the UE initiating an attaching or initial registration
procedure according to the assistance information received from the
first network when moving between the first network and a second
network.
[0064] In an embodiment of the present disclosure, the assistance
information includes: NAS level indication or registration mode
negotiated on the NAS level; or the assistance information
includes: neighborhood measurement information; or the assistance
information includes: an instruction sent by a base station in the
first network through an RRC message, the instruction including:
information about cells of the second network; or an indication
that switching among different access technologies is not
supported; or an instruction of performing a reselection to the
second network; or the assistance information includes: an
instruction sent by a core network in the first network through an
NAS message, the instruction including: an instruction of
performing a reselection to the second network.
[0065] In the embodiment, the RRC message is an RRC connection
release message. The instruction sent by the base station in the
first network through the RRC message is sent when the first
network fails to switch among different access technologies.
[0066] In the embodiment of the present disclosure, when moving
between the first network and the second network, the UE initiates
an attaching or initial registration procedure according to the
assistance information received from the first network, thereby
avoiding a problem of mobility management failure when the UE is
moving among networks of different access technologies, and
ensuring the communication quality.
[0067] As shown in FIG. 4, the embodiment of the present disclosure
describes an example in which the UE performs registration mode
negotiation with the 5GS and performs connection state movement to
the EPS. The method includes the following steps.
[0068] Step 401, first, registering a UE operating in a single
registration mode to the 5G network and performing registration
mode negotiation with the network. According to a result of the
registration mode negotiation, the AMF indicates to the UE that the
Nx interface is not supported, that is, the single registration
mode is not supported. The registration mode negotiation is an
optional step. For example, the UE only supports the single
registration mode, and thus the UE does not need to provide the
registration mode information to the network. The 5G network
determines, according to its own capability, that the single
registration mode cannot be supported, and indicates to the UE that
the Nx interface or the single registration mode is not
supported.
[0069] Step 402, the UE determines, according to the result or
indication of the registration mode negotiation or, that the 5G
network does not support the single registration mode.
[0070] Step 403, an NG RAN prepares to initiate a switching
process. However, since the AMF does not support the single
registration mode, the NG RAN determines that the switching to a
EPS (Evolved Packet System) cannot be performed.
[0071] Step 404, the NG RAN releases the RRC connection of the UE,
and sends the RRC connection release message to the UE.
[0072] The RRC connection release message includes: information
about cells of the second network; or an indication that switching
among different access technologies is not supported; or an
instruction of performing a reselection to the second network.
[0073] The UE releases the RRC connection.
[0074] Step 405, the UE determines, according to the instruction
information received from the NG RAN, to perform an attaching
process to the EPS.
[0075] As shown in FIG. 5, the embodiment of the present disclosure
describes an example in which the UE performs registration mode
negotiation in the 5GS and performs idle state movement to the EPS.
The method includes: Step 501, first, registering a UE operating in
a single registration mode to the 5G network, and performing
registration mode negotiation with the network. According to the
result of the registration mode negotiation, the 5GS indicates to
the UE that the single registration mode is not supported. Step
502, the UE determines, according to the result or indication of
the registration mode negotiation, that the 5G network does not
support the single registration mode. Step 503, according to the
result or indication of the registration mode negotiation,
performing an attaching process instead of a TAU (Tracking Area
Update) process, when the UE moves into a coverage of the EPS
network, and the UE sends an attach request to the EPS. Step 504,
the EPS sends an Attach Accept to the UE.
[0076] As shown in FIG. 6, the embodiment of the present disclosure
describes an example in which the UE is registered in the 5GS and
performs connection state movement to the EPS. The method includes:
Step 601, the UE in the connection state acquiring neighborhood
measurement information from the NG RAN; Step 602, the UE in the
connection state determining, according to the neighborhood
measurement information provided by the NG RAN, that the measured
cell does not include any information about cells of the E-UTRA,
and thus determining that the 5G network does not support an
interoperation with the EPS, that is, does not support a single
registration mode; Step 603, the NG RAN abandoning switching since
no suitable target cell can be found, releasing the RRC connection,
and sending an RRC connection release request to the UE; Step 604,
the UE selecting an E-UTRA cell according to the RRC connection
release request, and initiating an attaching process.
[0077] As shown in FIG. 7, the embodiment of the present disclosure
describes an example in which a UE attaches to an EPS and performs
connection state movement to a 5GS. The method includes: Step 701,
the UE in the connection state acquiring neighborhood measurement
information from the E-UTRAN; Step 702, the UE in the connection
state determining, according to the neighborhood measurement
information provided by the E-UTRAN, that the measured cell does
not include any information about cells of NR, and thus determining
that the LTE network does not support an interoperation with the
5GS, that is, does not support a single registration mode; Step
702, the E-UTRAN abandoning switching since no suitable target cell
can be found, releasing the RRC connection, and sending an RRC
connection release request to the UE; Step 703, the UE selecting an
NR cell according to the RRC connection release request, and
initiating an attaching process.
[0078] As shown in FIG. 8, the embodiment of the present disclosure
describes an example in which the AMF instructs a UE to perform
connection state movement. The scenario is as follows: The NG RAN
has configured information about the E-UTRA cell, but the AMF does
not deploy the Nx interface. The method includes: Step 801, first,
registering a UE operating in the single registration mode to the
5G network, and performing registration mode negotiation with the
network. If the 5GS does not support the Nx interface, the 5GS
indicates to the UE that the single registration mode is not
supported. Step 802, the UE determines, according to the result or
indication of the registration mode negotiation, that the 5G
network does not support the single registration mode. Step 803,
the NG RAN performs switching decision, determines to initiate a
switching process, and sends a switching request message to the
AMF. Step 804, the AMF rejects switching since the AMF does not
support the single registration mode, and sends a switching
rejection message to the NG RAN. Step 805, the AMF sends an RAT
(Radio Access Technology) reselection instruction to the UE,
wherein the instruction is sent by using the NAS message. Step 806,
the UE determines to perform an attaching process to the EPS
according to the RAT reselection instruction as sent.
[0079] In this embodiment, the UE determines whether to perform
access to the EPS according to the RAT reselection instruction, and
if necessary, initiates an attaching or initial registration
procedure when accessing the EPS network.
[0080] In the embodiment of the present disclosure, when moving
between the first network and the second network, the UE initiates
an attaching or initial registration procedure according to the
assistance information received from the first network, thereby
avoiding a problem of mobility management failure when the UE is
moving among networks of different access technologies, and
ensuring the communication quality.
[0081] As shown in FIG. 9, an information processing device
according to an embodiment of the present disclosure is applied to
a user equipment (UE) operating in a single registration mode, and
includes: a receiving module 901 for receiving assistance
information from a first network; a processing module 902 for
initiating an attaching or initial registration procedure according
to the assistance information received from the first network when
the UE is moving between the first network and a second network,
the first and second networks utilizing different access
technologies.
[0082] Wherein the processing module 902 includes: a determination
sub-module for determining whether the UE in single registration
mode can be supported in the first network according to the
assistance information received from the first network; a
processing sub-module for initiating the attaching or initial
registration procedure when accessing the second network, if the UE
in single registration mode cannot be supported in the first
network.
[0083] Wherein the assistance information includes NAS level
indication or registration mode negotiated on the NAS level; the
determination sub-module is specifically configured to determine
whether the UE in single registration mode can be supported in the
first network according to the result or indication of the
registration mode negotiation.
[0084] Wherein the assistance information includes neighborhood
measurement information; the determination sub-module is
specifically configured to determine that the UE in single
registration mode cannot be supported in the first network, if the
neighborhood measurement information does not include information
about any cell of the access technology which the second network
utilizes.
[0085] Wherein the processing module 902 include: a determination
sub-module for determining whether an access to the second network
is needed according to the assistance information received from the
first network; a processing sub-module for initiating the attaching
or initial registration procedure when accessing the second
network, if the access to the second network is needed.
[0086] Wherein the assistance information includes an instruction
sent by a base station in the first network through an RRC message,
and the instruction includes: information about cells of the second
network; or an indication that switching among different access
technologies is not supported; or an instruction of performing a
reselection to the second network.
[0087] Wherein the RRC message is an RRC connection release
message.
[0088] Wherein the assistance information includes an instruction
sent by a core network in the first network through an NAS message,
and the instruction includes: an instruction of performing a
reselection to the second network.
[0089] The working principle of the device according to the present
disclosure has been described in the foregoing method
embodiments.
[0090] In the embodiment of the present disclosure, when moving
between the first network and the second network, the UE initiates
an attaching or initial registration procedure according to the
assistance information received from the first network, thereby
avoiding a problem of mobility management failure when the UE is
moving among networks of different access technologies, and
ensuring the communication quality.
[0091] As shown in FIG. 10, an information processing device
according to an embodiment of the present disclosure is applied to
a network-side equipment of a first network, and includes: an
acquisition module 1001 for acquiring assistance information; and a
sending module 1002 for sending the assistance information to a UE
operating in a single registration mode, wherein the UE initiates
an attaching or initial registration procedure according to the
assistance information received from the first network when moving
between the first network and a second network.
[0092] The assistance information includes NAS level indication or
registration mode negotiated on the NAS level; or the assistance
information includes neighborhood measurement information; or the
assistance information includes an instruction sent by a base
station in the first network through an RRC message, and the
instruction includes: information about cells of the second
network; or an indication that switching among different access
technologies is not supported; or an instruction of performing a
reselection to the second network; or the assistance information
includes an instruction sent by a core network in the first network
through an NAS message, instructing to perform a reselection to the
second network.
[0093] The RRC message is an RRC connection release message.
[0094] The instruction sent by the base station in the first
network through the RRC message is sent when the first network
fails to switch among different access technologies.
[0095] The operation principle of the device according to the
present disclosure has been described in the foregoing method
embodiments.
[0096] In the embodiment of the present disclosure, when moving
between the first network and the second network, the UE initiates
an attaching or initial registration procedure according to the
assistance information received from the first network, thereby
avoiding a problem of mobility management failure when the UE is
moving among networks of different access technologies, and
ensuring the communication quality.
[0097] As shown in FIG. 11, an embodiment of the present disclosure
provides a network-side equipment including a processor 1100 which
is configured to read a program in a storage 1120 to execute
processes as follows: acquiring assistance information; sending the
assistance information to a UE operating in a single registration
mode by a transceiver 1110, the UE initiating an attaching or
initial registration procedure according to the assistance
information received from the first network when moving between the
first network and a second network. The transceiver 1100 is
configured to receive and send data.
[0098] In FIG. 11, the bus architecture may include any number of
interconnected buses and bridges, which are specifically linked by
various circuits such as the processor 1100 (which is an example of
the one or more processors) and the storage 1120 (which is an
example of the storage). The bus architecture may also link various
other circuits such as peripherals, voltage regulators, and power
management circuits, which are well known in the art and is
therefore omitted herein. The bus interface provides an interface.
The transceiver 1110 may be a plurality of elements, including a
transmitter and a transceiver, and providing units for
communicating with various other devices over a transmission
medium. The processor 1100 is responsible for managing the bus
architecture and general processing, and the memory 1120 may store
data used by the processor 1100 in performing operations.
[0099] The processor 1100 is responsible for managing the bus
architecture and general processing, and the memory 1120 may store
data used by the processor 1100 in performing operations.
[0100] As shown in FIG. 12, a user equipment according to an
embodiment of the present disclosure includes: a processor 1200
which is configured to read a program in a storage 1220 to execute
processes as follows: receiving assistance information from a first
network by a transceiver 1210; initiating an attaching or initial
registration procedure according to the assistance information
received from the first network when the user equipment is moving
between the first network and a second network, the first and
second networks utilizing different access technologies; and a
transceiver 1210, which is configured to receive and send data
under the control of the processor 1200.
[0101] In FIG. 12, the bus architecture may include any number of
interconnected buses and bridges, which are specifically linked by
various circuits such as the processor 1200 (which is an example of
the one or more processors) and the storage 1220 (which is an
example of the storage). The bus architecture may also link various
other circuits such as peripherals, voltage regulators, and power
management circuits, which are well known in the art and,
therefore, will not be further described herein. The bus interface
provides an interface. The transceiver 1210 may be a plurality of
elements, including a transmitter and a transceiver, and providing
units for communicating with various other devices over a
transmission medium. For different user equipments, the user
interface 1230 may also be an interface capable of connecting
externally or internally the required devices, including but not
limited to a keypad, a display, a speaker, a microphone, a
joystick, and the like.
[0102] The processor 1200 is responsible for managing the bus
architecture and general processing, and the memory 1220 may store
data used by the processor 1200 in performing operations.
[0103] The processor 1200 is further configured to determine
whether the UE in single registration mode can be supported in the
first network according to the assistance information received from
the first network; and initiate the attaching or initial
registration procedure when accessing the second network, if the UE
in single registration mode cannot be supported in the first
network.
[0104] The assistance information includes: NAS level indication or
registration mode negotiated on the NAS level; and the processor
1200 is further configured to determine whether the UE in single
registration mode can be supported in the first network according
to the result or indication of the registration mode
negotiation.
[0105] The assistance information includes neighborhood measurement
information; and the processor 1200 is further configured to
determine that the UE in single registration mode cannot be
supported in the first network, if the neighborhood measurement
information does not include information about any cell of the
access technology which the second network utilizes.
[0106] The processor 1200 is further configured to determine
whether an access to the second network is needed according to the
assistance information received from the first network; and
initiate the attaching or initial registration procedure when
accessing the second network, if the access to the second network
is needed.
[0107] The assistance information includes an instruction sent by a
base station in the first network through an RRC message, and the
instruction includes: information about cells of the second
network; or an indication that switching among different access
technologies is not supported; or an instruction of performing a
reselection to the second network.
[0108] The RRC message is an RRC connection release message.
[0109] The instruction is sent when the first network fails to
switch among different access technologies.
[0110] The assistance information includes an instruction sent by a
core network in the first network through an NAS message,
instructing to perform a reselection to the second network.
[0111] The present disclosure further provides a computer-readable
storage medium for storing a computer program which is executable
by a processor to perform the information processing method
according to any of the above embodiments.
[0112] In the several embodiments provided by the present
application, it should be understood that the disclosed methods and
devices can be implemented in other manners. For example, the
device embodiments described above are merely illustrative. For
example, the division of the units is only a logical functional
division. In practical applications, there may be other division
manners; for example, multiple units or components may be combined
or may be integrated into another system, or some features may be
ignored or not executed. In addition, the mutual coupling or direct
coupling or communication connection shown or discussed may be an
indirect coupling or communication connection through some
interfaces, devices or units, and may be in an electrical,
mechanical or other form.
[0113] In addition, the functional units in various embodiments of
the present disclosure may be integrated into one processing unit,
or each unit may be physically included separately, or two or more
units may be integrated into one unit. The above integrated unit
can be implemented in the form of hardware or in the form of
hardware and software.
[0114] The above integrated unit implemented in the form of a
software functional unit may be stored in a computer-readable
storage medium. The above software functional unit is stored in a
storage medium and includes a plurality of instructions for causing
a computer device (which may be a personal computer, a server, or a
network device, etc.) to perform part of the steps of the
transceiving method of the various embodiments of the present
disclosure. The foregoing storage medium includes various medium
capable of storing program codes, such as a U disk, a mobile hard
disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a
magnetic disk or an optical disk, and the like.
[0115] The above describes preferred embodiments of the present
disclosure, and it should be noted that those skilled in the art
can also make many improvements and refinements without departing
from the principle of the present disclosure. These improvements
and refinements should also fall into the protective scope of the
present disclosure.
* * * * *