CN112867055B - Inter-system switching method and device - Google Patents
Inter-system switching method and device Download PDFInfo
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- CN112867055B CN112867055B CN201911101303.1A CN201911101303A CN112867055B CN 112867055 B CN112867055 B CN 112867055B CN 201911101303 A CN201911101303 A CN 201911101303A CN 112867055 B CN112867055 B CN 112867055B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
Abstract
The application discloses a method and a device for switching different systems, aiming at the problem that the different systems can not be switched due to the lack of different system terminal capability information in a base station, so that a user is off-line, the method comprises the following steps: after determining that a measurement report of a specified type sent by a terminal is received, a base station determines that the second system terminal capability information of the terminal is not obtained, and at least adjusts the threshold of the adjacent cell when determining that the measurement report of the specified type is sent by the terminal for the first time, and sends the adjusted threshold of the adjacent cell to the terminal; and when the base station receives the measurement report of the designated type sent by the terminal again, selecting an adjacent cell according to the measurement report and indicating the terminal to redirect. In the method and the device, when the measurement report of the specified type is received again, the terminal is indicated to redirect, so that the opportunity of accessing the adjacent cell is provided for the terminal, the probability of user offline is reduced, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for inter-system handover.
Background
The 5G New air interface (5G New Radio, 5G NR) is a global 5G standard based on a brand-New air interface design of Orthogonal Frequency Division Multiplexing (OFDM), and is also a very important cellular mobile technology basis for the next generation.
In the prior art, when the NR system configures B1/B2 for measurement, if a base station (gNB) can obtain terminal Capability information (UE-NR-Capability) of the NR system from a terminal, and the UE-NR-Capability contains information supporting different system frequency bands, the B1/B2 measurement configuration is completed. When the terminal detects that the network of the NR service cell is poor and the Evolved UMTS Terrestrial Radio Access (EUTRA) neighboring cell network is good, a B1/B2 measurement report is reported to the base station to trigger inter-system switching, namely, the 5G network is switched to the 4G network. When triggering inter-system handover, there are generally two situations according to different strategies of a base station:
in the first case: after receiving the B1/B2 measurement report sent by the terminal, the base station judges whether EUTRA system terminal Capability information (UE-EUTRA-Capability) exists in the user context of the base station, and when the UE-EUTRA-Capability exists, the base station initiates a switching request to a target side.
In the second case: after receiving the B1/B2 measurement report sent by the terminal, the base station directly initiates a switching request to a target side without judging whether UE-EUTRA-Capability exists in the user context of the base station.
However, in the first case, if there is no UE-EUTRA-Capability in the base station user context, it is not possible to initiate a handover request to the target side, as shown in fig. 1.
In the second case, if the base station does not carry the UE-EUTRA-Capability to initiate the handover request to the target side, the target side cannot allocate resources according to the terminal Capability because the handover request does not carry the corresponding UE Capability, resulting in a handover failure, as specifically shown in fig. 2.
In the current NR system, if the UE-EUTRA-Capability does not exist in the context of a base station user due to reasons such as base station strategies, unreported users and the like, when the NR service cell network is degraded and the EUTRA neighbor cell network is better, and a terminal reports a B1/B2 measurement report to the base station, the UE cannot trigger the completion of inter-system handover, and finally causes the user to be off-network, thereby affecting the user experience and reducing the KPI of the base station.
It follows that a new solution needs to be devised to overcome the above drawbacks.
Disclosure of Invention
The application provides a method and a device for switching different systems, which are used for solving the problem that in the prior art, due to the fact that a base station lacks capability information of a terminal of the different systems, the different systems can not be switched, and therefore a user is off-line.
The embodiment of the application provides the following specific technical scheme:
a method for switching between different systems comprises the following steps:
a base station determines to receive a measurement report of a specified type sent by a terminal, wherein the specified type represents that the terminal determines that channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold, a service cell administered by the base station serves a first standard system, and the at least one adjacent cell serves a second standard system;
the base station determines that the second system terminal capability information of the terminal is not obtained, and determines that the specified type of measurement report is sent by the terminal for the first time, at least the threshold of the adjacent cell is adjusted upwards, and the adjusted threshold of the adjacent cell is sent to the terminal;
and when the base station receives the measurement report of the specified type sent by the terminal again, selecting an adjacent cell according to the measurement report and indicating the terminal to redirect.
Optionally, the determining, by the base station, that the measurement report of the specified type sent by the terminal is received specifically includes:
the base station receives a measurement report sent by the terminal, wherein the test report comprises mark information representing the measurement type;
when the measurement type of the measurement report is determined to be a first measurement type or a second measurement type based on the marking information, judging that the specified type of measurement report is received;
wherein the content of the first and second substances,
the first measurement type is used for representing that the terminal determines that the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold through measurement;
and the second measurement type is characterized in that the terminal determines that the channel state information of the serving cell is lower than a preset serving cell threshold through measurement, and the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold.
Optionally, the at least adjusting the threshold of the neighboring cell by the base station, and sending the adjusted threshold of the neighboring cell to the terminal includes:
when the base station determines that the measurement type of the received measurement report is the first measurement type, the base station up-regulates the adjacent cell threshold and sends the regulated adjacent cell threshold to the terminal; alternatively, the first and second electrodes may be,
and when the base station determines that the measurement type of the received measurement report is a second measurement type, the base station down regulates the threshold of the service cell, up regulates the threshold of the adjacent cell, and sends the regulated threshold of the service cell and the regulated threshold of the adjacent cell to the terminal.
Optionally, if the base station determines that the second system terminal capability information of the terminal is obtained, the base station instructs the terminal to switch to an adjacent cell.
Optionally, if the base station determines that the second system terminal capability information of the terminal is not obtained, but the measurement report of the specified type is not sent by the terminal for the first time, selecting an adjacent cell according to the measurement report, and directly instructing the terminal to redirect.
Optionally, the base station instructs the terminal to perform redirection, which specifically includes:
and the base station sends redirection information representing the characteristic information of the adjacent cell to the terminal, and instructs the terminal to randomly access to the adjacent cell according to the redirection information.
An inter-system switching apparatus comprising:
the first processing unit is used for determining that a measurement report of a specified type sent by a terminal is received, wherein the specified type represents that the terminal determines that channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold, a service cell administered by a base station serves a first system, and the at least one adjacent cell serves a second system;
a second processing unit, configured to determine that second-standard system terminal capability information of the terminal is not obtained, and when it is determined that the measurement report of the specified type is first sent by the terminal, at least up-regulate the adjacent cell threshold, and send the regulated adjacent cell threshold to the terminal;
and the third processing unit is used for selecting one adjacent cell according to the measurement report when the measurement report of the specified type sent by the terminal is received again, and indicating the terminal to redirect.
Optionally, when determining that the measurement report of the specified type sent by the terminal is received, the first processing unit is specifically configured to:
receiving a measurement report sent by the terminal, wherein the test report comprises mark information representing a measurement type;
when the measurement type of the measurement report is determined to be a first measurement type or a second measurement type based on the marking information, judging that the specified type of measurement report is received;
wherein the content of the first and second substances,
the first measurement type is used for representing that the terminal determines that the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold through measurement;
and the second measurement type is characterized in that the terminal determines that the channel state information of the serving cell is lower than a preset serving cell threshold through measurement, and the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold.
Optionally, when at least the threshold of the neighboring cell is adjusted up and the adjusted threshold of the neighboring cell is sent to the terminal, the second processing unit is specifically configured to:
when the measurement type of the received measurement report is determined to be the first measurement type, the adjacent cell threshold is adjusted upwards, and the adjusted adjacent cell threshold is sent to the terminal; alternatively, the first and second electrodes may be,
and when the measurement type of the received measurement report is determined to be the second measurement type, the serving cell threshold is adjusted downwards, the adjacent cell threshold is adjusted upwards, and the adjusted serving cell threshold and the adjusted adjacent cell threshold are sent to the terminal.
Optionally, the second processing unit is further configured to:
and if the terminal capability information of the second system of the terminal is determined to be obtained, indicating the terminal to be switched to an adjacent cell.
Optionally, the third processing unit is further configured to:
and if the terminal capability information of the second system of the terminal is not obtained, but the specified type of the measurement report is not sent by the terminal for the first time, selecting an adjacent cell according to the measurement report, and directly indicating the terminal to redirect.
Optionally, when the terminal is instructed to perform redirection, the third processing unit is specifically configured to:
and sending redirection information representing the characteristic information of the adjacent cell to the terminal, and indicating the terminal to randomly access to the adjacent cell according to the redirection information.
An inter-system switching apparatus comprising:
a memory for storing executable instructions;
and the processor is used for reading and executing the executable instructions stored in the memory so as to realize the inter-system switching method.
A storage medium having instructions which, when executed by a processor, enable the processor to perform a method of inter-system handover as defined in any one of the preceding claims.
In the embodiment of the application, after determining that a measurement report of a specified type sent by a terminal is received, a base station determines that the second system terminal capability information of the terminal is not obtained, and when determining that the measurement report of the specified type is sent by the terminal for the first time, at least the threshold of an adjacent cell is adjusted upwards, and the adjusted threshold of the adjacent cell is sent to the terminal; and when the base station receives the measurement report of the designated type sent by the terminal again, selecting an adjacent cell according to the measurement report and indicating the terminal to randomly redirect. Therefore, the base station can know that the channel state of at least one adjacent cell is good through the received measurement report of the designated type, the terminal needs to be switched to the adjacent cell, the processing efficiency of the base station is improved, then, the base station determines that the second system terminal capability information of the terminal is not obtained, and determines that the measurement report of the designated type is sent for the first time, the channel state of the adjacent cell can be monitored through at least modulating the threshold of the adjacent cell, when the measurement report of the designated type sent by the terminal is received again, the channel state of the adjacent cell is continuously good, at the moment, one adjacent cell is selected according to the measurement report, the terminal is indicated to be redirected, the opportunity of accessing the adjacent cell with the good signal state is provided for the terminal, the phenomenon that a user is off-line due to the fact that the different system switching cannot be triggered is avoided, and the user experience is improved, the KPI of the base station is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a diagram illustrating a situation in which a base station does not have the terminal capability information of the EUTRA system in the prior art;
fig. 2 is a diagram illustrating another case where the terminal capability information of the EUTRA system does not exist in the base station in the prior art;
fig. 3 is a schematic diagram of a serving cell and neighboring cells of a terminal according to an embodiment of the present application;
fig. 4 is a schematic diagram of an inter-system handover procedure according to an embodiment of the present application;
fig. 5 is a schematic diagram of a standard signaling flow presented by an air interface according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an inter-system switching apparatus according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an inter-system switching device according to an embodiment of the present disclosure.
Detailed Description
Aiming at the problem that the user is offline due to the fact that the different system terminal capability information is lacked in the context of the base station and the different system switching cannot be carried out in the prior art, in order to prevent the user from offline and improve the KPI of the base station, in the embodiment of the application, a solution for the different system switching is provided.
The scheme is as follows: the method comprises the steps that a base station determines to receive a measurement report of a specified type sent by a terminal, and the specified type represents that the terminal determines that channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold, wherein a service cell administered by the base station serves a first standard system, and at least one adjacent cell serves a second standard system; the base station determines that the second system terminal capability information of the terminal is not obtained, and determines that the specified type of measurement report is sent by the terminal for the first time, at least the threshold of the adjacent cell is adjusted upwards, and the adjusted threshold of the adjacent cell is sent to the terminal; and when the base station receives the measurement report of the specified type sent by the terminal again, selecting an adjacent cell according to the measurement report and indicating the terminal to redirect.
It should also be understood that in the embodiment of the present application, a Terminal (UE) includes, but is not limited to, a Mobile Station (MS), a Mobile Terminal (MS), a Mobile phone (Mobile Telephone), a handset (handset), a portable device (portable Equipment), and the like, and the Terminal may communicate with one or more core networks via a Radio Access Network (RAN), for example, the Terminal may be a Mobile phone (or "cellular" phone), a computer with a wireless communication function, and the Terminal may also be a portable, pocket, hand-held, computer-embedded, or vehicle-mounted Mobile device.
In the embodiments of the present application, the present invention relates to an evolved Node B (eNB) in the EUTRA system, and a base station in 5G NR (gNB).
When the terminal is accessed to the gNB, the gNB acquires the terminal capability information of the NR system from the terminal, and if the terminal capability information of the NR system contains information supporting the frequency band of the EUTRA system, the gNB sends a preset serving cell threshold and a preset adjacent cell threshold to the terminal. According to the pre-made strategy of the gNB, the terminal reports the terminal capability information of the EUTRA system at the same time when reporting the terminal capability information of the NR system, or the terminal reports the terminal capability information of the EUTRA system actively after reporting the terminal capability information of the NR system.
For example, when the terminal accesses the gbb, the terminal capability information of the NR system is reported to the gbb, where the terminal capability information of the NR system includes information supporting a frequency band of the EUTRA system, then the gbb sends a preset serving cell threshold of-140 db and a preset adjacent cell threshold of-70 db to the terminal, and schematic diagrams of the serving cell and the adjacent cell of the terminal are shown in fig. 3.
In order to make the technical solutions of the present application better understood by those of ordinary skill in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 4, in the embodiment of the present application, a process of performing inter-system handover is as follows.
Step S401: the method comprises the steps that a base station determines to receive a measurement report of a specified type sent by a terminal, wherein the specified type represents that the terminal determines that channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold, a service cell governed by the base station serves a first system, and the at least one adjacent cell serves a second system.
For example, a serving cell governed by a gNB serves an NR system, a neighboring cell 1, a neighboring cell 2, a neighboring cell 3, a neighboring cell 4, and a neighboring cell 5 serve an EUTRA system, the gNB determines that a specified type of measurement report sent by a terminal is received, where the specified type refers to a first measurement type or a second measurement type, the specified type characterizes that the terminal determines that channel state information of at least one neighboring cell is higher than a preset neighboring cell threshold of-70 db, and the measurement report at least includes the following information: the channel state information of the serving cell and the channel state information of at least one neighboring cell, for example, the measurement report includes-170 db of channel state information of the serving cell, -40db of channel state information of the neighboring cell 1, and-50 db of channel state information of the neighboring cell 2.
Specifically, the base station receives a measurement report sent by the terminal, the test report includes mark information representing a measurement type, and when it is determined that the measurement type of the measurement report is a first measurement type or a second measurement type based on the mark information, it is determined that the measurement report of a specified type is received, where the first measurement type represents that the terminal determines that channel state information of at least one neighboring cell is higher than a preset neighboring cell threshold through measurement, the second measurement type represents that the terminal determines that the channel state information of a serving cell is lower than a preset serving cell threshold through measurement, and the channel state information of at least one neighboring cell is higher than the preset neighboring cell threshold.
For example, it is assumed that a flag 1 corresponds to B1 measurement, the gNB receives a measurement report 1 sent by the terminal, the test report 1 includes a flag 1 indicating a measurement type, based on the flag 1, it is determined that the measurement type of the measurement report 1 is B1 measurement, and the B1 measurement indicates that the terminal determines that the channel state information of the neighboring cell 1 and the neighboring cell 2 is higher than a preset neighboring cell threshold of-70 db through measurement.
For another example, it is assumed that the flag 2 corresponds to a B2 measurement, the gNB receives the measurement report 2 sent by the terminal, the test report 2 includes the flag 2 indicating the measurement type, based on the flag 2, it is determined that the measurement type of the measurement report 2 is a B2 measurement, the B2 measurement indicates that the terminal determines, through measurement, that the channel state information of the serving cell is lower than the preset serving cell threshold of-140 db, and the channel state information of the neighboring cell 1 and the neighboring cell 2 is higher than the preset neighboring cell threshold of-70 db.
Step S402: the base station judges whether the second system terminal capability information of the terminal is obtained, if so, step S403 is executed, otherwise, step S404 is executed.
For example, the gNB determines whether to obtain the EUTRA system terminal capability information of the terminal, where the EUTRA system terminal capability information may include maximum supported uplink and downlink rates of the terminal, terminal transmission power, carrier indication supported by the terminal, duplex mode, and so on.
Step S403: the base station instructs the terminal to switch to an adjacent cell.
For example, when the gNB determines that the terminal capability information of the EUTRA system has been obtained, the pre-formulated policy according to the gNB includes, but is not limited to, taking the following actions: assuming that the channel state information of the adjacent cell 1 is higher than that of the adjacent cell 2, the designated terminal is switched to the adjacent cell 1 in the adjacent cell 1 and the adjacent cell 2 of which the channel state information is higher than a preset adjacent cell threshold of-70 db.
Step S404: the base station determines whether the measurement report of the specified type is sent by the terminal for the first time, if so, step S405 is executed, otherwise, step S406 is executed.
For example, when the terminal is accessed, the gNB sets user state information, where the user state information is used to represent whether a measurement report measured by B1 or B2 is sent by the terminal for the first time, where when the user state information is Init, the measurement report measured by B1 or B2 is sent by the terminal for the first time, and when the user state information is Redirect, the measurement report measured by B1 or B2 is not sent by the terminal for the first time, and the gNB determines whether a measurement report of a specified type is sent by the terminal for the first time according to the user state information.
Step S405: and the base station at least performs up-regulation on the adjacent cell threshold and sends the regulated adjacent cell threshold to the terminal.
Specifically, when the base station determines that the measurement type of the received measurement report is the first measurement type, the base station performs up-regulation on the threshold of the adjacent cell, and sends the regulated threshold of the adjacent cell to the terminal.
For example, when the user status information is Init, when the gNB determines that the measurement type of the received measurement report is B1 measurement, the neighbor cell threshold-70 db is adjusted up, and the adjusted neighbor cell threshold-50 db is sent to the terminal.
Specifically, when the base station determines that the measurement type of the received measurement report is the second measurement type, the base station down-regulates the serving cell threshold, up-regulates the adjacent cell threshold, and sends the regulated serving cell threshold and the regulated adjacent cell threshold to the terminal.
For example, when the user state information is Init, when the gNB determines that the measurement type of the received measurement report is B2 measurement, the serving cell threshold-140 db is adjusted downward, the adjacent cell threshold-70 db is adjusted upward, and the adjusted serving cell threshold-160 db and adjacent cell threshold-50 db are sent to the terminal.
In the embodiment of the application, the serving cell threshold is adjusted downwards by increasing the neighboring cell threshold, and the adjusted serving cell threshold and the adjusted neighboring cell threshold are sent to the terminal, so that whether the channel state of the serving cell is continuously deteriorated can be monitored, when a measurement report of B1 measurement or B2 measurement sent by the terminal is received again, the channel state of the serving cell is continuously deteriorated, at this time, whether the gNB obtains the terminal capability information of the EUTRA system or not, an adjacent cell is randomly selected for redirection on the indication terminal, the selected eNB of the adjacent cell obtains the terminal capability information of the EUTRA system from the terminal, and if the selected eNB of the adjacent cell can obtain the terminal capability information of the EUTRA system, the random access is successful.
Further, since the measurement report of the specified type is received once, and the next reception will not be the first reception, the user status information is modified from Init to Redirect at this time.
Step S406: and the base station selects an adjacent cell according to the measurement report and indicates the terminal to redirect.
For example, when the user state information is Redirect, when the gNB determines that the measurement report measured by B1 or B2 is not first sent by the terminal, a neighboring cell is selected according to the measurement report measured by B1 or B2, and the terminal is instructed to Redirect.
It should be noted that, in the embodiment of the present application, the pre-made policy of the gNB includes, but is not limited to, selecting one neighboring cell by taking the following operations: assuming that-30 db of the channel state information of the neighboring cell 1 is higher than-40 db of the channel state information of the neighboring cell 2 according to the re-received B2 measurement report, the neighboring cell 1 is selected from the neighboring cell 1 and the neighboring cell 2 whose channel state information is higher than the adjusted neighboring cell threshold of-50 db.
Specifically, the base station sends redirection information representing feature information of one adjacent cell to the terminal, and instructs the terminal to randomly access to the adjacent cell according to the redirection information.
For example, the gNB sends redirection information of the feature information of the neighboring cell 1 to the terminal through an rrcreelease message, and instructs the terminal to randomly access to the neighboring cell 1 according to the redirection information.
The following will describe a standard signaling flow presented by an air interface when performing inter-system handover in the embodiment of the present invention, taking an interaction between one gNB, one eNB, and a terminal as an example, as shown in fig. 5.
Step S501: and the terminal sends a MeasurementReport message to the gNB, wherein the MeasurementReport message carries the measurement report.
Specifically, the terminal sends a measurement report to the gNB through a MeasurementReport message, the gNB receives the measurement report sent by the terminal, the test report includes label information representing the measurement type, label 1 corresponds to B1 measurement, label 2 corresponds to B2 measurement, and based on label 1 or label 2, the gNB determines to receive the measurement report of the B1/B2 measurement type.
Step S502: and the gNB sends an RRC Reconfiguration message to the terminal to inform the terminal to measure according to the new serving cell threshold and the adjacent cell threshold.
Specifically, the gNB determines that the terminal capability information of the EUTRA system is not obtained, and determines that the measurement report of the B1/B2 measurement type is sent by the terminal for the first time according to the user state information Init, the gNB adjusts the threshold of the adjacent cell upward, or adjusts the threshold of the serving cell downward and the threshold of the adjacent cell upward, and then sends the new serving cell threshold and the new threshold of the adjacent cell to the terminal through an RRC Reconfiguration message.
Step S503: the terminal sends RRCRECONFIfigurationComplete message to gNB to inform gNB of reconfiguration completion.
Specifically, the terminal informs the gNB of the completion of reconfiguration by sending an rrcreeconfigurationcomplete message to the gNB.
Step S504: and the terminal sends a MeasurementReport message to the gNB, wherein the MeasurementReport message carries a new measurement report.
Specifically, when it is known through measurement that the channel state information of the at least one neighboring cell is higher than the new neighboring cell threshold, or when the channel state information of the serving cell is lower than the new serving cell threshold and the channel state information of the at least one neighboring cell is higher than the new neighboring cell threshold, the terminal sends a new measurement report to the gNB through a MeasurementReport message, and the gNB determines again the measurement report of the B1/B2 measurement type sent by the receiving terminal.
Step S505: and the gNB sends an RRCRelease message to the terminal, wherein the RRCRelease message carries the redirection information.
Specifically, when the gNB determines that the terminal capability information of the EUTRA system is not obtained, and determines that the measurement report of the B1/B2 measurement type is not sent by the terminal for the first time according to the user state information Redirect, the RRCRelease message carries redirection information representing the characteristic information of one adjacent cell, and the RRCRelease message is sent to the terminal.
Step S506: the terminal sends an Msg1 message to the eNB informing the eNB of random access.
Specifically, the terminal sends an Msg1 message to the base station eNB to which the neighboring cell belongs according to the redirection information in the received rrcreelease message, so as to initiate random access to the neighboring cell.
Based on the same inventive concept, in the embodiment of the present application, an inter-system handover is provided, as shown in fig. 6, which includes at least a first processing unit 601, a second processing unit 602, and a third processing unit 603, wherein,
a first processing unit 601, configured to determine to receive a measurement report of a specific type sent by a terminal, where the specific type represents that channel state information of at least one neighboring cell determined by the terminal is higher than a preset neighboring cell threshold, where a serving cell governed by a base station serves a first system, and the at least one neighboring cell serves a second system;
a second processing unit 602, configured to determine that second-standard system terminal capability information of the terminal is not obtained, and when it is determined that the measurement report of the specified type is first sent by the terminal, at least up-regulate the adjacent cell threshold, and send the adjusted adjacent cell threshold to the terminal;
a third processing unit 603, configured to select an adjacent cell according to the measurement report when receiving the measurement report of the specified type sent by the terminal again, and instruct the terminal to perform redirection.
Optionally, when determining that the measurement report of the specified type sent by the terminal is received, the first processing unit 601 is specifically configured to:
receiving a measurement report sent by the terminal, wherein the test report comprises mark information representing a measurement type;
when the measurement type of the measurement report is determined to be a first measurement type or a second measurement type based on the marking information, judging that the specified type of measurement report is received;
wherein the content of the first and second substances,
the first measurement type is used for representing that the terminal determines that the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold through measurement;
and the second measurement type is characterized in that the terminal determines that the channel state information of the serving cell is lower than a preset serving cell threshold through measurement, and the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold.
Optionally, when at least the threshold of the neighboring cell is adjusted up and the adjusted threshold of the neighboring cell is sent to the terminal, the second processing unit 602 is specifically configured to:
when the measurement type of the received measurement report is determined to be the first measurement type, the adjacent cell threshold is adjusted upwards, and the adjusted adjacent cell threshold is sent to the terminal; alternatively, the first and second electrodes may be,
and when the measurement type of the received measurement report is determined to be the second measurement type, the serving cell threshold is adjusted downwards, the adjacent cell threshold is adjusted upwards, and the adjusted serving cell threshold and the adjusted adjacent cell threshold are sent to the terminal.
Optionally, the second processing unit 602 is further configured to:
and if the terminal capability information of the second system of the terminal is determined to be obtained, indicating the terminal to be switched to an adjacent cell.
Optionally, the third processing unit 603 is further configured to:
and if the terminal capability information of the second system of the terminal is not obtained, but the specified type of the measurement report is not sent by the terminal for the first time, selecting an adjacent cell according to the measurement report, and directly indicating the terminal to redirect.
Optionally, when the terminal is instructed to perform redirection, the third processing unit 603 is specifically configured to:
and sending redirection information representing the characteristic information of the adjacent cell to the terminal, and indicating the terminal to randomly access to the adjacent cell according to the redirection information.
Based on the same inventive concept, in the embodiment of the present application, an inter-system switching apparatus is provided, as shown in fig. 7, the entity apparatus may include: a processor 701, a memory 702, a transceiver 703, and a bus interface 704;
the processor 701 is configured to read the computer instruction in the memory 702 and execute any one of the methods executed by the inter-system switching apparatus.
The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 701 in performing operations. The transceiver 703 is used for receiving and transmitting data under the control of the processor 701.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 701, and various circuits, represented by memory 702, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 701 in performing operations.
Based on the same inventive concept, embodiments of the present application provide a storage medium, where the storage medium stores computer-executable instructions, and the computer-executable instructions are configured to enable a computer to execute the method executed by the inter-system switching apparatus.
In the embodiment of the application, after determining that a measurement report of a specified type sent by a terminal is received, a base station determines that the second system terminal capability information of the terminal is not obtained, and when determining that the measurement report of the specified type is sent by the terminal for the first time, at least the threshold of an adjacent cell is adjusted upwards, and the adjusted threshold of the adjacent cell is sent to the terminal; and when the base station receives the measurement report of the designated type sent by the terminal again, selecting an adjacent cell according to the measurement report and indicating the terminal to redirect.
Therefore, the base station can know that the channel state of at least one adjacent cell is good through the received measurement report of the designated type, the terminal needs to be switched to the adjacent cell, the processing efficiency of the base station is improved, then, the base station determines that the second system terminal capability information of the terminal is not obtained, and determines that the measurement report of the designated type is sent for the first time, the channel state of the adjacent cell can be monitored through at least modulating the threshold of the adjacent cell, when the measurement report of the designated type sent by the terminal is received again, the channel state of the adjacent cell is continuously good, at the moment, one adjacent cell is selected according to the measurement report, the terminal is indicated to be redirected, the opportunity of accessing the adjacent cell with the good signal state is provided for the terminal, the phenomenon that a user is off-line due to the fact that the different system switching cannot be triggered is avoided, and the user experience is improved, the KPI of the base station is improved.
For the system/apparatus embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for relevant points.
It is to be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (14)
1. A method for inter-system handover, comprising:
a base station determines to receive a measurement report of a specified type sent by a terminal, wherein the specified type represents that the terminal determines that channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold, a service cell administered by the base station serves a first standard system, and the at least one adjacent cell serves a second standard system;
the base station determines that the second system terminal capability information of the terminal is not obtained, and determines that the specified type of measurement report is sent by the terminal for the first time, at least the threshold of the adjacent cell is adjusted upwards, and the adjusted threshold of the adjacent cell is sent to the terminal;
and when the base station receives the measurement report of the specified type sent by the terminal again, selecting an adjacent cell according to the measurement report and indicating the terminal to redirect.
2. The method of claim 1, wherein the determining, by the base station, that the measurement report of the specified type sent by the terminal is received specifically comprises:
the base station receives a measurement report sent by the terminal, wherein the measurement report comprises mark information representing a measurement type;
when the measurement type of the measurement report is determined to be a first measurement type or a second measurement type based on the marking information, judging that the specified type of measurement report is received;
wherein the content of the first and second substances,
the first measurement type is used for representing that the terminal determines that the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold through measurement;
and the second measurement type is characterized in that the terminal determines that the channel state information of the serving cell is lower than a preset serving cell threshold through measurement, and the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold.
3. The method of claim 2, wherein the base station at least up-regulates the neighbor cell threshold and sends the adjusted neighbor cell threshold to the terminal, comprising:
when the base station determines that the measurement type of the received measurement report is the first measurement type, the base station up-regulates the adjacent cell threshold and sends the regulated adjacent cell threshold to the terminal; alternatively, the first and second electrodes may be,
and when the base station determines that the measurement type of the received measurement report is a second measurement type, the base station down regulates the threshold of the service cell, up regulates the threshold of the adjacent cell, and sends the regulated threshold of the service cell and the regulated threshold of the adjacent cell to the terminal.
4. The method of claim 1, further comprising:
and if the base station determines that the second system terminal capability information of the terminal is obtained, indicating the terminal to be switched to an adjacent cell.
5. The method of claim 1, further comprising:
and if the base station determines that the second system terminal capability information of the terminal is not obtained, but the specified type of measurement report is not sent by the terminal for the first time, selecting an adjacent cell according to the measurement report, and directly indicating the terminal to redirect.
6. The method according to any of claims 1 to 5, wherein the base station instructs the terminal to perform redirection, specifically comprising:
and the base station sends redirection information representing the characteristic information of the adjacent cell to the terminal, and instructs the terminal to randomly access to the adjacent cell according to the redirection information.
7. An inter-system switching apparatus, comprising:
the first processing unit is used for determining that a measurement report of a specified type sent by a terminal is received, wherein the specified type represents that the terminal determines that channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold, a service cell administered by a base station serves a first system, and the at least one adjacent cell serves a second system;
a second processing unit, configured to determine that second-standard system terminal capability information of the terminal is not obtained, and when it is determined that the measurement report of the specified type is first sent by the terminal, at least up-regulate the adjacent cell threshold, and send the regulated adjacent cell threshold to the terminal;
and the third processing unit is used for selecting one adjacent cell according to the measurement report when the measurement report of the specified type sent by the terminal is received again, and indicating the terminal to redirect.
8. The apparatus as claimed in claim 7, wherein the first processing unit is specifically configured to, upon determining that a measurement report of a specified type sent by the terminal is received:
receiving a measurement report sent by the terminal, wherein the measurement report comprises mark information representing a measurement type;
when the measurement type of the measurement report is determined to be a first measurement type or a second measurement type based on the marking information, judging that the specified type of measurement report is received;
wherein the content of the first and second substances,
the first measurement type is used for representing that the terminal determines that the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold through measurement;
and the second measurement type is characterized in that the terminal determines that the channel state information of the serving cell is lower than a preset serving cell threshold through measurement, and the channel state information of at least one adjacent cell is higher than a preset adjacent cell threshold.
9. The apparatus of claim 8, wherein when at least the neighboring cell threshold is adjusted up and the adjusted neighboring cell threshold is sent to the terminal, the second processing unit is specifically configured to:
when the measurement type of the received measurement report is determined to be the first measurement type, the adjacent cell threshold is adjusted upwards, and the adjusted adjacent cell threshold is sent to the terminal; alternatively, the first and second electrodes may be,
and when the measurement type of the received measurement report is determined to be the second measurement type, the serving cell threshold is adjusted downwards, the adjacent cell threshold is adjusted upwards, and the adjusted serving cell threshold and the adjusted adjacent cell threshold are sent to the terminal.
10. The apparatus of claim 7, wherein the second processing unit is further to:
and if the terminal capability information of the second system of the terminal is determined to be obtained, indicating the terminal to be switched to an adjacent cell.
11. The apparatus of claim 7, wherein the third processing unit is further to:
and if the terminal capability information of the second system of the terminal is not obtained, but the specified type of the measurement report is not sent by the terminal for the first time, selecting an adjacent cell according to the measurement report, and directly indicating the terminal to redirect.
12. The apparatus according to any one of claims 7 to 11, wherein, when instructing the terminal to perform redirection, the third processing unit is specifically configured to:
and sending redirection information representing the characteristic information of the adjacent cell to the terminal, and indicating the terminal to randomly access to the adjacent cell according to the redirection information.
13. An inter-system switching apparatus, comprising:
a memory for storing executable instructions;
a processor for reading and executing executable instructions stored in the memory to implement the inter-system handover method of any one of claims 1 to 6.
14. A storage medium, wherein instructions in the storage medium, when executed by a processor, enable the processor to perform the inter-system handover method of any one of claims 1 to 5.
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