U.S. patent application number 13/213944 was filed with the patent office on 2011-12-08 for method, apparatus, and system for detecting a radio network problem.
This patent application is currently assigned to HUAWEI TECHNOLOGIES CO., LTD.. Invention is credited to Ying HUANG, Johan JOHANSSON, Peter LEGG, Jun WANG, Xuelong WANG.
Application Number | 20110300896 13/213944 |
Document ID | / |
Family ID | 42622399 |
Filed Date | 2011-12-08 |
United States Patent
Application |
20110300896 |
Kind Code |
A1 |
WANG; Jun ; et al. |
December 8, 2011 |
METHOD, APPARATUS, AND SYSTEM FOR DETECTING A RADIO NETWORK
PROBLEM
Abstract
A method, an apparatus, and a system for detecting a radio
network problem are disclosed. The method includes: when a radio
network problem occurs on a user equipment (UE), a first base
station controlling a cell that a radio resource control (RRC)
connection established with the UE, receives problem information
about the radio network problem sent by the UE, in a procedure of
re-establishing the RRC connection by the UE, and sends the problem
information to a second base station controlling a cell where the
radio network problem occurs. In this way, the network side can
automatically identify and detect the radio network problem which
occurs on the UE, so that the network can perform self-adjustment
and optimization, therefore improving the network performance and
satisfying use requirements of users.
Inventors: |
WANG; Jun; (Shanghai,
CN) ; HUANG; Ying; (Shanghai, CN) ; WANG;
Xuelong; (Beijing, CN) ; LEGG; Peter; (Kista,
SE) ; JOHANSSON; Johan; (Kungsangen, SE) |
Assignee: |
HUAWEI TECHNOLOGIES CO.,
LTD.
Shenzhen
CN
|
Family ID: |
42622399 |
Appl. No.: |
13/213944 |
Filed: |
August 19, 2011 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
PCT/CN2010/070639 |
Feb 11, 2010 |
|
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13213944 |
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Current U.S.
Class: |
455/524 |
Current CPC
Class: |
H04W 36/0079 20180801;
H04W 24/04 20130101; H04W 76/18 20180201; H04W 36/0058 20180801;
H04W 24/08 20130101; H04W 36/0055 20130101 |
Class at
Publication: |
455/524 |
International
Class: |
H04W 24/04 20090101
H04W024/04; H04W 36/00 20090101 H04W036/00 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 20, 2009 |
CN |
200910078405.6 |
Claims
1. A method for detecting a radio network problem, comprising: when
a radio network problem occurs on a user equipment (UE), receiving,
by a first base station controlling a cell that a radio resource
control (RRC) connection established with the UE, problem
information about the radio network problem sent by the UE, in a
procedure of re-establishing the RRC connection by the UE, and
sending the problem information to a second base station
controlling a cell where the radio network problem occurs.
2. The method of claim 1, wherein if the radio network problem is a
handover failure (HOF), the problem information comprises one or
more of the following: information of an error cause, both identity
information of a source cell (S-Cell) and a target cell (T-Cell)
when the HOF occurs, identity information of the cell that the RRC
connection established with the UE, identity information of a
tracking area (TA) of the S-Cell when the HOF occurs, identity
information of the UE, time information from the time when a
handover command is received to the time when RRC re-establishment
or establishment succeeds.
3. The method of claim 2, wherein the identity information of the
cell comprises: signal quality and the signal quality comprises one
or two of the following: reference signal received power (RSRP) and
reference signal received quality (RSRQ).
4. The method of claim 1, wherein if the radio network problem is a
handover failure (HOF), the cell that the RRC connection
established with the UE is a target cell (T-Cell), and the cell
where the radio network problem occurs is a source cell (S-Cell)
where the HOF occurs on the UE, or the cell that the RRC connection
established with the UE is an other cell (O-Cell), and the cell
where the radio network problem occurs is the S-Cell or T-Cell
where the HOF occurs on the UE.
5. The method of claim 1, wherein the forwarding the problem
information to the second base station controlling the cell where
the radio network problem occurs comprises: sending the problem
information to the second base station controlling the cell where
the radio network problem occurs through an inter-base station
interface.
6. A method for reporting a radio network problem, comprising: when
a radio network problem occurs on a user equipment (UE), sending,
by the UE, problem information about the radio network problem to a
first base station controlling a cell that a radio resource control
(RRC) connection established with the UE, in a procedure of
re-establishing the RRC connection by the UE; wherein the problem
information comprises signal quality and the signal quality
comprises one or two of the following: reference signal received
power (RSRP) and reference signal received quality (RSRQ).
7. The method of claim 6, wherein if the radio network problem is a
handover failure (HOF), the problem information comprises one or
more of the following: information of an error cause, both identity
information of a source cell (S-Cell) and a target cell (T-Cell)
when the HOF occurs, identity information of the cell that the RRC
connection established with the UE, identity information of a
tracking area (TA) of the S-Cell when the HOF occurs, identity
information of the UE, time information from the time when a
handover command is received to the time when RRC re-establishment
succeeds.
8. A network apparatus for detecting a radio network problem,
comprising: a problem information receiving unit, configured to:
when a radio network problem occurs on a user equipment (UE),
receive problem information about the radio network problem sent by
the UE, in a procedure of re-establishing a radio resource control
(RRC) connection by the UE, and send the problem information to a
base station controlling a cell where the radio network problem
occurs.
9. The apparatus of claim 8, wherein if the radio network problem
is a handover failure (HOF), the problem information comprises one
or more of the following: information of an error cause, both
identity information of a source cell (S-Cell) and a target cell
(T-Cell) when the HOF occurs, identity information of the cell that
the RRC connection established with the UE, identity information of
a tracking area (TA) of the S-Cell when the HOF occurs, identity
information of the UE, time information from the time when a
handover command is received to the time when RRC re-establishment
succeeds.
10. The apparatus of claim 9, wherein the identity information of
the cell comprises: signal quality and the signal quality comprises
one or two of the following: reference signal received power (RSRP)
and reference signal received quality (RSRQ).
11. The apparatus of claim 8, wherein if the radio network problem
is a handover failure (HOF), the cell that the RRC connection
established with the UE is a target cell (T-Cell), and the cell
where the radio network problem occurs is a source cell (S-Cell)
where the HOF occurs on the UE, or the cell that the RRC connection
established with the UE is another cell (O-Cell), and the cell
where the radio network problem occurs is the S-Cell or T-Cell
where the HOF occurs on the UE.
12. The apparatus of claim 8, wherein the problem information is
forwarded to the base station controlling the cell where the radio
network problem occurs through an inter-base station interface.
13. A user equipment (UE), comprising: a sending unit, configured
to: when a radio network problem occurs on the UE, send problem
information about the radio network problem to a first base station
controlling a cell that a radio resource control (RRC) connection
is established with the UE, in a procedure of re-establishing the
RRC connection by the UE, wherein the problem information comprises
signal quality and the signal quality comprises one or two of the
following: reference signal received power (RSRP) and reference
signal received quality (RSRQ).
14. The UE of claim 13, wherein if the radio network problem is a
handover failure (HOF), the problem information sent by the sending
unit comprises one or more of the following: information of an
error cause, both identity information of a source cell (S-Cell)
and a target cell (T-Cell) when the HOF occurs, identity
information of the cell that the RRC connection established with
the UE, identity information of a tracking area (TA) of the S-Cell
when the HOF occurs, identity information of the UE, time
information from the time when a handover command is received to
the time when RRC re-establishment succeeds.
Description
[0001] This application is a continuation of International
Application No. PCT/CN2010/070639, filed on Feb. 11, 2010, which
claims priority to Chinese Patent Application No. 200910078405.6,
filed on Feb. 20, 2009, both of which are hereby incorporated by
reference in their entireties.
FIELD OF THE INVENTION
[0002] The present invention relates to the radio network field,
and in particular, to a method, an apparatus and a system for
detecting a radio network problem.
BACKGROUND OF THE INVENTION
[0003] There may be various radio network problems occur during the
access of a user equipment (UE) to a radio network, for example,
radio link failure (Radio Link Failure, RLF) or handover failure
(Hand Over Failure, HOF), Handover Too Early, Handover Too Late,
ping-pong handover.
[0004] When an RLF occurs on the UE, the UE re-establishes a radio
resource control (Radio Resource Control, RRC) within a specified
time; if the re-establishment fails within the specified time, the
UE may initiate an RRC establishment request subsequently; when the
UE receives a handover command and fails to perform a handover
within the specified time, that is, an HOF occurs, the UE may
perform an RRC re-establishment procedure within a specified time.
Similarly, if the re-establishment fails within the specified time,
the UE may also initiate an RRC establishment request. In addition,
when an RLF occurs on the UE, a cell where the UE camps before the
RLF occurs is referred to as a previous cell (P-Cell), and other
cells are uniformly referred to as new cell (N-Cell). However, when
an HOF occurs on the UE, because the handover concept is involved,
there are three types of cell: source cell (S-Cell), target cell
(T-Cell), and other cell (O-Cell).
[0005] For example, when an RLF occurs on a UE, a procedure of RRC
re-establishment or establishment is shown in FIG. 1. The procedure
includes the following steps.
[0006] 1. An RLF occurs on the UE.
[0007] 2. The UE initiates an RRC connection re-establishment or
establishment procedure.
[0008] Specifically, the UE may perform the RRC connection
re-establishment in the P-Cell or the N-Cell; or after the RRC
re-establishment fails, the UE may initiate a subsequent RRC
establishment procedure in the P-Cell or the N-Cell.
[0009] FIG. 2 is a schematic diagram of an RRC re-establishment or
establishment procedure when a UE performs a handover and an HOF
occurs. The procedure includes the following steps.
[0010] 1. A source cell (S-Cell) performs measurement configuration
on the UE.
[0011] 2. The UE performs corresponding measurement.
[0012] 3. If a result of the measurement meets a set condition, the
UE reports a measurement report to the S-Cell.
[0013] 4. The S-Cell decides to hand over the UE to a target cell
(T-Cell) according to the measurement report reported by the
UE.
[0014] 5. The S-Cell sends a handover request message to the
T-Cell.
[0015] 6. The T-Cell returns a handover response message to the
T-Cell.
[0016] 7. The S-Cell sends a handover command to the UE.
[0017] 8. In this case, if the radio signal of the T-Cell is not
good, the UE may not hand over to the T-Cell within a specified
time.
[0018] 9. After a timer set on the UE side expires, an HOF occurs
on the UE. In this case, the UE may initiate an RRC connection
re-establishment procedure.
[0019] Specifically, the UE may perform the RRC connection
re-establishment procedure in an S-Cell or a T-Cell or an O-Cell of
a previous handover, where the O-Cell is a cell other than the
S-Cell and the T-Cell; or after the RRC connection re-establishment
fails, the UE initiates a subsequent RRC connection establishment
procedure. Similarly, the RRC connection establishment procedure
may also be performed in the S-Cell, the T-Cell or the O-Cell.
[0020] According to the solution in the prior art, no solution that
can automatically identify and detect these radio network problems
is available in the prior art. Consequently, various radio network
problems such as Handover Too Early or Handover Too Late may occur
due to parameter settings, so that call drops occur on the UE,
therefore affecting a user experience.
SUMMARY OF THE INVENTION
[0021] In one aspect, the present invention provides a method for
detecting a radio network problem. The method includes: when a
radio network problem occurs on a UE, a first base station
controlling a cell that an RRC connection established with the UE
receives problem information about the radio network problem sent
by the UE, in a procedure of re-establishing or establishing an RRC
connection by the UE or after an RRC connection has been
established, and sends the problem information to a second base
station controlling a cell where the radio network problem
occurs.
[0022] In another aspect, the present invention provides an
apparatus for detecting a radio network problem. The apparatus
includes a problem information receiving unit configured to: when a
radio network problem occurs on a UE, receive problem information
about the radio network problem sent by the UE, in a procedure of
re-establishing or establishing an RRC connection by the UE or
after an RRC connection has been established, and send the problem
information to a server or a cell where the radio network problem
occurs.
[0023] In another aspect, the present invention provides a method
for reporting a radio network problem. The method includes: when a
radio network problem occurs on a UE, sending problem information
about the radio network problem to a first base station controlling
a cell that an RRC connection established with the UE, in a
procedure of re-establishing or establishing an RRC connection or
after establishing an RRC connection, where the problem information
includes signal quality and the signal quality includes reference
signal received power (RSRP) and/or reference signal received
quality (RSRQ).
[0024] In still another aspect, the present invention provides a
UE. The UE includes a sending unit configured to: when a radio
network problem occurs on the UE, send problem information about
the radio network problem to a first base station controlling a
cell that an RRC connection established, in a procedure of
establishing or re-establishing an RRC connection by the UE or
after the UE establishes an RRC connection, where the problem
information includes signal quality and the signal quality includes
reference signal received power (RSRP) and/or reference signal
received quality (RSRQ).
[0025] In still another aspect, the present invention provides a
radio network system. The system includes the preceding apparatus
at network side and the preceding UE.
[0026] According to the above technical solution, when a radio
network problem occurs on a UE, in a procedure of re-establishing
or establishing an RRC connection by the UE or after the UE
establishes an RRC connection, a cell that an RRC connection
established receives problem information about the radio network
problem sent by the UE, and forwards the problem information to a
server or a cell where the radio network problem occurs. In this
way, the network side can automatically identify and detect the
radio network problem which occurs on the UE, so that the network
can perform self-adjustment and optimization, therefore improving
the network performance and satisfying use requirements of
users.
BRIEF DESCRIPTION OF THE DRAWINGS
[0027] FIG. 1 is a schematic diagram of a procedure of RRC
re-establishment or establishment when an RLF occurs on a UE in the
prior art;
[0028] FIG. 2 is a schematic diagram of a procedure of RRC
re-establishment or establishment when an HOF occurs on a UE in the
prior art;
[0029] FIG. 3 is a schematic flowchart of a method according to
Embodiment 1 of the present invention;
[0030] FIG. 4 is a schematic structure diagram of an apparatus
according to Embodiment 2 of the present invention;
[0031] FIG. 5 is a schematic structure diagram of a system
according to Embodiment 3 of the present invention;
[0032] FIG. 6 is a schematic diagram of signaling interactions in a
specific instance according to Embodiment 4 of the present
invention;
[0033] FIG. 7 is a schematic diagram of signaling interactions in a
specific instance according to Embodiment 5 of the present
invention;
[0034] FIG. 8 is a schematic diagram of signaling interactions in a
specific instance according to Embodiment 6 of the present
invention;
[0035] FIG. 9 is a schematic diagram of signaling interactions in a
specific instance according to Embodiment 7 of the present
invention;
[0036] FIG. 10 is a schematic diagram of signaling interactions in
a specific instance according to Embodiment 8 of the present
invention;
[0037] FIG. 11 is a schematic diagram of signaling interactions in
a specific instance according to Embodiment 9 of the present
invention; and
[0038] FIG. 12 is a schematic diagram of signaling interactions in
a specific instance according to Embodiment 10 of the present
invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0039] Embodiments of the present invention provide a method, an
apparatus, and a system for detecting a radio network problem, so
that the network side can automatically identify and detect the
radio network problem which occurs on the UE. In this way, the
network can perform self-adjustment and optimization, therefore
improving the network performance and satisfying use requirements
of users.
[0040] An embodiment of the present invention provides a method for
detecting a radio network problem. The method is as follows: when a
radio network problem occurs on a UE, in a procedure of
establishing an RRC connection by the UE or after an RRC connection
is established, the network side receives problem information about
the radio network problem sent by the UE. In this way, the network
side can detect the radio network problem after receiving the
problem information about the radio network problem, which provides
a basis for the network side to optimize parameters and solve the
radio network problem.
[0041] The following describes the embodiments of the present
invention in detail with reference to the accompanying
drawings.
Embodiment 1
[0042] FIG. 3 is a schematic flowchart of a method for detecting a
radio network problem according to Embodiment 1 of the present
invention. The method includes the following content.
[0043] 31. Receive problem information about a radio network
problem sent by the UE.
[0044] In this step, when a radio network problem occurs on the UE,
in a procedure of establishing an RRC connection by the UE or after
an RRC connection is established, the network side receives the
problem information about the radio network problem sent by the UE.
The network side may be a cell that the RRC connection established
or other network device.
[0045] The radio network problem may be a radio link failure (RLF)
problem, handover failure (HOF) problem, Handover Too Early,
Handover Too Late or ping-pong handover.
[0046] More specifically, the problem information may be carried in
an RRC re-establishment message or an RRC establishment message in
a procedure of RRC re-establishment or establishment, or be carried
in other messages after the procedure of RRC re-establishment or
establishment is completed, for example, the problem information
may be carried in a user-defined message.
[0047] In addition, in a specific implementation procedure, if the
radio network problem is an RLF problem, the problem information
about the RLF may include one or more of the following: information
of an error cause, identity information of an S-Cell in the case of
the RLF, identity information of a tracking area (TA) of the S-Cell
in the case of the RLF, identity information of the UE, and time
information from the time when the RLF occurs to the time when the
RRC re-establishment or establishment succeeds. If the radio
network problem is an HOF problem, the problem information about
the HOF may include one or more of the following: information of an
error cause, both identity information of an S-Cell and a T-Cell in
the case of the HOF, identity information of a tracking area of the
S-Cell in the case of the HOF, identity information of the UE, and
time information from the time when a handover command is received
to the time when the RRC re-establishment or establishment
succeeds.
[0048] After step 31 is executed, the network side can
automatically identify and detect the radio network problem which
occurs on the UE, so that the network can perform self-adjustment
and optimization, therefore improving the network performance and
satisfying use requirements of users.
[0049] In addition, after the network receives the problem
information, step 32 may be further executed.
[0050] 32. Perform a problem analysis according to the received
problem information and optimize parameters to solve the radio
network problem.
[0051] In a specific implementation procedure, if the network side
is a cell that an RRC connection established with the UE and a
radio network problem occurs in the cell, the cell directly
performs a problem analysis on the received problem information and
optimizes parameters to solve the radio network problem.
[0052] The network side may also forward the received problem
information through the cell that an RRC connection established
with the UE to a cell where the radio network problem occurs, and
the cell where the radio network problem occurs performs a problem
analysis on the received problem information and optimizes
parameters to solve the radio network problem. In the specific
implementation, the received problem information may be forwarded
to the cell where the radio network problem occurs through an
inter-base station interface or through transference of a network
element, where the network element may be a mobility management
entity (MME) in the core network, an element management system
(EMS) or a network management system (NMS).
[0053] In addition, the network side may also upload the received
problem information to a special server through the cell that an
RRC connection established, and then the server performs analysis
and processing on the received problem information. In this way,
the problem may be analyzed and processed on a centralized basis.
Specifically, the received problem information may be forwarded to
the element management system (EMS) through a southbound interface
(Itf-S); or the received problem information may be forwarded to
the network management system (NMS) server through a northbound
interface Itf-N for centralized analysis and processing.
[0054] In the specific implementation, the network side may adopt
different processing modes according to different radio network
problems which occur on the UE. Specifically, when a radio network
problem occurs on the UE is a radio link failure (RLF), if the cell
that an RRC connection established with the UE is a P-Cell where
the RLF occurs, the P-Cell may directly perform a problem analysis
on the received problem information and optimize parameters to
solve the radio network problem.
[0055] If the cell that an RRC connection established with the UE
is an N-Cell, the N-Cell may send the received problem information
to a P-Cell where the RLF occurs. For example, the N-Cell may
forward the received problem information to the P-Cell where the
RLF occurs through an inter-base station interface or through
transference of a network element; the P-Cell performs a problem
analysis on the received problem information and optimizes
parameters to solve the radio network problem.
[0056] When the radio network problem occurs on the UE is a
handover failure (HOF), if the cell that an RRC connection
established with the UE is an S-Cell or a P-Cell where the HOF
occurs, the S-Cell or the P-Cell may directly perform a problem
analysis on the received problem information and optimize
parameters to solve the radio network problem.
[0057] Or, if the cell that an RRC connection established with the
UE is a T-Cell, the T-Cell forwards the received problem
information to an S-Cell where the HOF occurs, and the S-Cell
performs a problem analysis on the received problem information and
optimizes parameters to solve the radio network problem.
[0058] Or, if the cell that an RRC connection established with the
UE is an O-Cell, the O-Cell forwards the received problem
information to an S-Cell where an HOF occurs or a T-Cell where an
HOF occurs, and the S-Cell or the T-Cell performs a problem
analysis on the received problem information and optimizes
parameters to solve the radio network problem.
[0059] More specifically, the problem information about the radio
network problem that the network side receives from the UE may
further include information such as the frequency of an old/source
cell, a physical cell identity (PCI), a cell global identity (CGI),
IP, a public land mobile network (PLMN) ID, and signal quality (for
example, Reference Signal Received Power (RSRP), Reference Signal
Received Quality (RSRQ)). The access control base station of an
N-Cell/T-Cell may add a new cell adjacency relationship or trigger
an establishment of an X2 interface according to the preceding
information, therefore solving a radio network problem (for
example, the RLF) due to weak coverage.
[0060] This embodiment provides a method for detecting a radio
network problem by the network side and further provides a method
for solving the network problem according to the network problem
information. By using the technical solution provided in this
embodiment, the network can detect the network problem which occurs
on the UE in time, perform a problem analysis on the problem
information, find the problem causes, and optimize parameters to
solve the radio network problem.
Embodiment 2
[0061] Embodiment 2 of the present invention provides an apparatus
at network side for detecting a radio network problem. FIG. 4 is a
schematic structure diagram of the apparatus according to the
Embodiment 2 of the present invention. As shown in FIG. 4, the
apparatus includes a problem information receiving unit 41.
[0062] The problem information receiving unit 41 is configured to:
when a radio network problem occurs on the UE, in a procedure of
establishing an RRC connection by the UE or after an RRC connection
is established, receive problem information about the radio network
problem sent by the UE. For the specific receiving method, refer to
the description of the Embodiment 1.
[0063] In addition, the apparatus may further include a problem
processing unit 42 configured to perform a problem analysis
according to the problem information received by the problem
information receiving unit, and optimize parameters to solve the
radio network problem. The specific analysis and processing method
has been described in the Embodiment 1.
[0064] The apparatus at network side for detecting a radio network
problem according to this embodiment can detect a radio network
problem which occurs on the UE in time, and know problem
information about the radio network problem, which provides a basis
for the network side to solve the radio network problem. In this
way, the network side can further perform a problem analysis and
optimize parameters to solve the radio network problem.
Embodiment 3
[0065] Embodiment 3 of the present invention provides a system for
detecting a radio network problem. FIG. 5 is a schematic structure
diagram of the system according to the Embodiment 3 of the present
invention. The system includes a network side 51 configured to:
when a radio network problem occurs on the UE, in a procedure of
establishing an RRC connection or after an RRC connection is
established, receive problem information about the radio network
problem sent by the UE.
[0066] In addition, the network 51 is further configured to perform
a problem analysis according to the received problem information
and optimize parameters to solve the radio network problem. For the
specific problem analysis and processing method, refer to the
description of the method Embodiment 1.
[0067] By using the system for detecting the radio network problem
according to this embodiment, the network can detect a radio
network problem which occurs on the UE in time, and know the
problem information about the radio network problem, which provides
a basis for the network side to solve the radio network problem. In
this way, the network side can perform a problem analysis and
optimize parameters to solve the radio network problem.
[0068] It should be noted that: in the preceding apparatus and
system provided in embodiments of the present invention, each unit
is divided only according to the function logics. However, the
division is not limited thereto so long as the unit can implement
corresponding functions. In addition, the specific name of each
functional unit is only for the convenience of differentiation and
is not intended to limit the protection scope of the present
invention.
Embodiment 4
[0069] The following describes the method for detecting a radio
network problem in detail with specific instances. FIG. 6 is a
schematic diagram of signaling interactions in a specific instance
according to Embodiment 4 of the present invention. The procedure
includes the following content.
[0070] 1. An RLF or an HOF occurs on the UE.
[0071] 2. In a procedure of RRC re-establishment or RRC
establishment after RRC re-establishment fails performed by the UE,
the cell that an RRC connection established with the UE receives
problem information about the RLF or the HOF sent by the UE.
[0072] The problem information may be carried in an RRC
establishment message (RRC Connection Request), an RRC
re-establishment message (RRC Connection Re-establishment), or in a
message extended after the UE establishes an RRC connection.
[0073] In a specific implementation procedure, if an RLF occurs,
the cell that an RRC connection established with the UE includes a
P-Cell and an N-Cell; if an HOF occurs, the cell that an RRC
connection established with the UE includes an S-Cell, a T-Cell,
and an O-Cell.
[0074] 3. The cell that an RRC connection established with the UE
forwards the problem information about the RLF or the HOF to a
server.
[0075] Through step 1 to step 3 above, the network side detects the
radio network problem. Further, the procedure of performing a
problem analysis and a parameter optimization by the server
according to the problem information includes the following
steps:
[0076] 4. The server performs a problem analysis, for example,
performing problem analysis according to the problem information
measured within a period of time.
[0077] 5. Adjust cell parameters according to a result of the
problem analysis to solve the problem.
[0078] In this way, by using the technical solution provided in the
Embodiment 4 of the present invention, the network side can
automatically identify and detect the radio network problem which
occurs on the UE, so that the network can perform self-adjustment
and optimization, therefore improving the network performance and
satisfying use requirements of users.
Embodiment 5
[0079] Embodiment 5 is a solution instance after an RLF occurs on a
UE. In this embodiment, a cell that receives the problem
information may directly perform a problem analysis to achieve the
purpose of parameter optimization. FIG. 7 is a schematic diagram of
signaling interactions in a specific instance according to the
Embodiment 5 of the present invention. As shown in FIG. 7, a
procedure of RRC re-establishment or establishment when an RLF
occurs on the UE includes the following content.
[0080] 1. An RLF occurs on the UE.
[0081] 2. The P-Cell receives problem information about the RLF
reported by the UE, where the problem information about the RLF may
be carried in an RRC establishment or re-establishment message, or
be carried in a message extended after an RRC connection is
established.
[0082] In a specific implementation procedure, any combination of
the following parameters may be carried in the RRC establishment or
re-establishment message or in the extended message to describe the
problem information about the RLF:
[0083] (A) Information of an error cause, for example, RLF or
HOF.
[0084] (B) Identity of a P-Cell and/or an N-Cell when an RLF occurs
on the UE. In this embodiment, the identify is a related identity
of a P-Cell and/or an O-Cell, for example, identity information
such as frequency, Physical Cell Identity (PCI), Cell Global
Identity (CGI), PLMN ID, signal quality (RSRP,RSRQ).
[0085] (C) Identity information of a Tracking Area (TA) of the
serving cell when an RLF occurs on the UE.
[0086] (D) Unique identity information of the UE, for example,
cell-radio network temporary identity (C-RNTI), temporary mobile
subscriber identity (TMSI), and international mobile subscriber
identity (IMSI). A UE related context may be found according to
this parameter, so that the context of the UE may be analyzed to
solve the problem better.
[0087] (E) Time information from a time when the RLF occurs on the
UE to a time when the RRC establishment or re-establishment
succeeds. Causes for the network problem may be inferred according
to this parameter. For example, when the time value is small, it
may be inferred that the problem is Handover Too Early or Handover
Too Late due to improper parameter settings; when the time value is
large, it may be inferred that the problem is caused by coverage
holes.
[0088] Through step 1 to step 2 above, the network side detects the
radio network problem. Further, the process of analysis and
parameter optimization performed by the P-Cell according to the
problem information include step 3:
[0089] 3. The P-Cell performs problem analysis according to the
problem information fed back in step 2, for example, long-term
measurement is performed directly and find out the root cause of
the problem by performing an analysis, and then performing cell
parameter optimization to solve the problem.
[0090] Similarly, by using the technical solution provided in the
Embodiment 6 of the present invention, the network side can
automatically identify and detect the radio network problem which
occurs on the UE, so that the network can perform self-adjustment
and optimization, therefore improving the network performance and
satisfying use requirements of users.
Embodiment 6
[0091] Embodiment 6 is also a solution instance after an RLF occurs
on a UE. This embodiment is different from the Embodiment 5 in
that: in this embodiment, after an RLF occurs on the UE, a
procedure of RRC re-establishment or establishment is performed in
an N-Cell. FIG. 8 is a schematic diagram of signaling interactions
in a specific instance according to the Embodiment 6. The procedure
includes the following content.
[0092] 1. An RLF occurs on the UE.
[0093] 2. The N-Cell receives problem information about the RLF
reported by the UE, where the problem information about the RLF may
be carried in an RRC establishment or re-establishment message, or
be carried in a message extended after the UE establishes an RRC
connection.
[0094] In a specific implementation procedure, the parameter
information carried in the RRC establishment or re-establishment
message, or the extended message is the same as the parameter
information in the Embodiment 5 of the present invention.
[0095] 3. The N-Cell forwards the problem information to a P-Cell
where the RLF occurs. In a specific implementation procedure, the
identity of the P-Cell may be found according to the cell identity
information carried in the problem information about the RLF
reported by the UE.
[0096] Through step 1 to step 3 above, the network detects the
radio network problem. Further, the process of analysis and
parameter optimization performed by the P-Cell according to the
problem information includes:
[0097] 4. The P-Cell performs problem analysis according to the
problem information fed back in step 3, for example, long-term
measurement is performed and finding out the root cause of the
problem by performing an analysis, and then performing parameter
optimization to solve the problem.
[0098] Similarly, by using the technical solution provided in the
Embodiment 6 of the present invention, the network side can
automatically identify and detect the radio network problem which
occurs on the UE, so that the network can perform self-adjustment
and optimization, therefore improving the network performance and
satisfying use requirements of users.
Embodiment 7
[0099] This Embodiment 7 is a solution instance after an HOF occurs
on a UE. In the Embodiment 7, a cell that receives the problem
information may directly perform a problem analysis to achieve the
purpose of parameter optimization. FIG. 9 is a schematic diagram of
signaling interactions in a specific instance according to the
Embodiment 7 of the present invention. As shown in FIG. 9, a
procedure of RRC re-establishment or establishment is performed in
an S-Cell when an HOF occurs on the UE includes the following
content.
[0100] 1. An HOF occurs on the UE.
[0101] 2. The S-Cell receives problem information about the HOF
reported by the UE, where the problem information about the HOF may
be carried in an RRC establishment or re-establishment message, or
be carried in a message extended after the UE establishes an RRC
connection.
[0102] In a specific implementation procedure, the following
parameters may be carried in the RRC establishment or
re-establishment message or in the extended message to describe the
following problem information about the HOF:
[0103] (A) Information of an error cause;
[0104] (B) Identity information of the S-Cell and a T-Cell when an
HOF occurs on the UE, for example, a frequency, a physical cell
identity (Physical Cell Identity, PCI), a cell global identity
(Cell Global Identity, CGI), an IP, a PLMN ID, and signal quality
(RSRP,RSRQ).
[0105] (C) Identity information of a tracking area (Tracking Area,
TA) of the S-Cell when an HOF occurs on the UE.
[0106] (D) Unique identity of the UE, for example, a C-RNTI, a
TMSI, or an IMSI.
[0107] (E) Time information from the time when the UE receives a
handover command to the time when the RRC establishment or
re-establishment succeeds.
[0108] Through step 1 to step 2 above, the network detects the
radio network problem. Further, the process of analysis and
parameter optimization performed by the S-Cell according to the
problem information includes:
[0109] 3. The S-Cell performs problem analysis according to the
problem information fed back in step 2, for example, long-term
measurement is performed and finding out the root cause of the
problem by performing an analysis, and then performing parameter
optimization to solve the problem.
[0110] Similarly, by using the technical solution provided in the
Embodiment 7 of the present invention, the network side can
automatically identify and detect the radio network problem which
occurs on the UE, so that the network can perform self-adjustment
and optimization, therefore improving the network performance and
satisfying use requirements of users.
Embodiment 8
[0111] Embodiment 8 is also a solution instance after an HOF occurs
on a UE. The Embodiment 8 is different from the Embodiment 7 in
that: in the Embodiment 8, after an HOF occurs on the UE, a
procedure of RRC re-establishment or establishment is performed in
a T-Cell. FIG. 8 is a schematic diagram of signaling interactions
in a specific instance according to the Embodiment 8. The procedure
includes the following content.
[0112] 1. An HOF occurs on the UE.
[0113] 2. The T-Cell receives problem information about the HOF
reported by the UE, where the problem information about the HOF may
be carried in an establishment or re-establishment message, or be
carried in a message extended after the UE establishes an RRC
connection.
[0114] The parameter information carried in the establishment or
re-establishment message or the extended message is the same as the
parameter information in the Embodiment 7 of the present
invention.
[0115] 3. The T-Cell forwards the problem information to an S-Cell
where the HOF occurs. In the specific implementation, the identity
information of the S-Cell is obtained according to cell identity
information carried in the problem information about the HOF
reported by the UE.
[0116] Through step 1 to step 3 above, the network detects the
radio network problem. Further, the procedure of analysis and
parameter optimization performed by the S-Cell according to the
problem information includes:
[0117] 4. The S-Cell performs problem analysis according to the
problem information fed back in step 3, for example, long-term
measurement is performed and finding out the root cause of the
problem by performing an analysis, and then performing parameter
optimization to solve the problem.
[0118] In a specific implementation procedure, a message between
the T-Cell and the S-Cell may be transferred through an existing UE
CONTEXT RELEASE message or a new user-defined message.
[0119] Similarly, by using the technical solution provided in the
Embodiment 8 of the present invention, the network side can
automatically identify and detect the radio network problem which
occurs on the UE, so that the network can perform self-adjustment
and optimization, therefore improving the network performance and
satisfying use requirements of users.
Embodiment 9
[0120] Embodiment 9 is also a solution instance after an HOF occurs
on a UE. After the HOF occurs, a procedure of RRC re-establishment
or establishment is performed in a T-Cell. This embodiment 9 is
different from the Embodiment 8 in that: in this embodiment 9, the
T-Cell directly performs corresponding problem analysis and
processing. FIG. 11 is a schematic diagram of signaling
interactions in a specific instance according to the Embodiment 9
of the present invention. The procedure includes the following
content.
[0121] 1. An HOF occurs on the UE.
[0122] 2. The T-Cell receives problem information about the HOF
reported by the UE, where the problem information about the HOF may
be carried in an RRC establishment or re-establishment message, or
be carried in a message extended after the UE establishes an RRC
connection.
[0123] The parameter information carried in the RRC establishment
or re-establishment message or the extended message is the same as
the parameter information in the Embodiment 7 of the present
invention.
[0124] Through step 1 to step 2 above, the network side detects the
radio network problem. Further, the procedure of analysis and
parameter optimization performed by the T-Cell according to the
problem information includes:
[0125] 3. The T-Cell performs problem analysis according to the
problem information fed back in step 2, for example, long-term
measurement is performed and finding out the root cause of the
problem by performing an analysis, and then performing parameter
optimization to solve the problem.
[0126] Similarly, by using the technical solution provided in the
Embodiment 9 of the present invention, the network can
automatically identify and detect the radio network problem which
occurs on the UE, so that the network can perform self-adjustment
and optimization, therefore improving the network performance and
satisfying use requirements of users.
Embodiment 10
[0127] Embodiment 10 is also a solution instance after an HOF
occurs on a UE. The Embodiment 10 is different from the Embodiment
9 in that: in the Embodiment 9, after the HOF occurs, a procedure
of RRC re-establishment or establishment is performed in an O-Cell.
FIG. 12 is a schematic diagram of signaling interactions in a
specific instance according to the Embodiment 10. The procedure
includes the following content.
[0128] 1. An HOF occurs on the UE.
[0129] 2. The O-Cell receives problem information about the HOF
reported by the UE, where the problem information about the HOF may
be carried in an RRC establishment or re-establishment message, or
be carried in a message extended after the UE establishes an RRC
connection.
[0130] The parameter information carried in the RRC establishment
or re-establishment message or the extended message is the same as
the parameter information in the Embodiment 7 of the present
invention.
[0131] 3. The O-Cell forwards the problem information to an S-Cell
or a T-Cell where the HOF occurs. In a specific implementation
procedure, the identity information of the S-Cell or the T-Cell may
be obtained according to the cell identity information carried in
the problem information about the HOF reported by the UE.
[0132] Through step 1 to step 3 above, the network side detects the
radio network problem. Further, the process of analysis and
parameter optimization performed by the S-Cell according to the
problem information includes:
[0133] 4. The S-Cell or the T-Cell performs problem analysis
according to the problem information fed back in step 3, for
example, long-term measurement is performed and finding out the
root cause of the problem by performing an analysis, and then
performing parameter optimization to solve the problem.
[0134] By using the technical solution provided in the Embodiment
10 of the present invention, the network side can automatically
identify and detect the radio network problem which occurs on the
UE, so that the network can perform self-adjustment and
optimization, therefore improving the network performance and
satisfying use requirements of users.
[0135] It is understandable to those skilled in the art that all or
part of the steps in the methods provided in the preceding
embodiments may be performed by hardware instructed by a program.
The program may be stored in a computer readable storage medium,
such as a read only memory, a magnetic disk, and a compact
disk-read only memory (CD-ROM).
[0136] In conclusion, by using the method, apparatus and system for
detecting the radio network problem according to embodiments of the
present invention, the network side can automatically identify and
detect the radio network problem which occurs on the UE, so that
the network can perform self-adjustment and optimization, therefore
improving the network performance and satisfying use requirements
of users.
[0137] The above descriptions are merely exemplary embodiments of
the present invention, but not intended to limit the scope of the
present invention. Any modification, equivalent replacement, or
improvement made without departing from the spirit and principle of
the present invention should fall within the protection scope of
the present invention. Therefore, the protection scope of the
present invention is subject to the appended claims.
* * * * *