CN110710261B - Handover processing method, network device, UE, and computer storage medium - Google Patents
Handover processing method, network device, UE, and computer storage medium Download PDFInfo
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Abstract
The invention discloses a switching processing method, network equipment, user equipment and a computer storage medium, comprising the following steps: when receiving an SRVCC switching capability indication of User Equipment (UE) and/or determining that the UE performs voice service under a 5G network, sending configuration information to the UE; the configuration information is used for triggering the UE to carry out inter-system measurement; and receiving the measurement information reported by the UE in the triggering of the corresponding measurement event, and judging whether to execute SRVCC switching when the UE performs the voice service in the 5G network based on the measurement information.
Description
Technical Field
The present invention relates to the field of information processing technologies, and in particular, to a handover processing method, a network device, a User Equipment (UE), and a computer storage medium.
Background
Srvcc (single Radio Voice continuity) is a Voice over LTE (Voice over LTE) Voice service continuity scheme proposed by 3GPP, and mainly aims to solve the problem of how to ensure Voice Call continuity when a single Radio UE moves between an LTE/Pre-LTE network and a 2G/3G CS network, that is, to ensure smooth handover between VoIP Voice and CS domain Voice controlled by IMS for the single Radio UE. However, at present, the 5G network does not support the SRVCC capability, and therefore, a solution needs to be proposed to solve the SRVCC support of the 5G network.
Disclosure of Invention
To solve the foregoing technical problem, embodiments of the present invention provide a handover processing method, a network device, a User Equipment (UE), and a computer storage medium.
The switching processing method provided by the embodiment of the invention is applied to first network equipment, and comprises the following steps:
when receiving an SRVCC switching capability indication of User Equipment (UE) and/or determining that the UE performs voice service under a 5G network, sending configuration information to the UE; the configuration information is used for triggering the UE to carry out inter-system measurement;
and receiving the measurement information reported by the UE in the triggering of the corresponding measurement event, and judging whether to execute SRVCC switching when the UE performs the voice service in the 5G network based on the measurement information.
The switching processing method provided by the embodiment of the invention is applied to UE (user equipment), and comprises the following steps:
sending an indication with SRVCC switching capability to a network side, and/or receiving configuration information sent by the network side when the UE performs voice service in a 5G network; the configuration information is used for triggering the UE to carry out inter-system measurement;
and when the inter-system measurement is carried out, the measurement information is reported to the network side based on the trigger of the corresponding measurement event.
The switching processing method provided by the embodiment of the invention is applied to second network equipment, and comprises the following steps:
receiving a relocation request sent by AMF; the relocation request is sent by AMF after receiving a handover request sent by an access network, and the relocation request contains base station identification information of a 3G network;
and judging whether to execute SRVCC switching or not based on the relocation request.
A first network device provided in an embodiment of the present invention includes:
the first communication unit is used for sending configuration information to the UE when receiving an SRVCC switching capability indication of the UE and/or determining that the UE carries out voice service under a 5G network; the configuration information is used for triggering the UE to carry out inter-system measurement;
and the first processing unit is used for receiving the measurement information reported by the UE in the triggering of the corresponding measurement event and judging whether the UE executes SRVCC switching or not when the UE executes the voice service under the 5G network based on the measurement information.
The embodiment of the invention provides a UE, which comprises:
the second communication unit is used for sending an indication with SRVCC switching capability to the network side and/or receiving the configuration information sent by the network side when the UE carries out voice service under the 5G network; the configuration information is used for triggering the UE to carry out inter-system measurement;
and when the inter-system measurement is carried out, the measurement information is reported to the network side based on the trigger of the corresponding measurement event.
In an embodiment of the present invention, a second network device includes:
the third communication unit receives the relocation request sent by the AMF; the relocation request is sent by AMF after receiving a handover request sent by an access network, and the relocation request contains base station identification information of a 3G network;
and the third processing unit is used for judging whether to execute SRVCC switching or not based on the relocation request.
A first network device provided in an embodiment of the present invention includes: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to perform the steps of the aforementioned method when running the computer program.
The embodiment of the invention provides User Equipment (UE), which comprises: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to perform the steps of the aforementioned method when running the computer program.
The second network device provided by the embodiment of the present invention includes: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is configured to perform the steps of the aforementioned method when running the computer program.
Embodiments of the present invention provide a computer storage medium, which stores computer-executable instructions, and when executed, implement the foregoing method steps.
According to the technical scheme of the embodiment of the invention, when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform different system measurement, and whether the UE is controlled to execute the SRVCC switching is determined based on the measurement information of the different system measurement. Therefore, the control of the UE to execute the SRVCC processing in the 5G network can be realized, and the problem that the current 5G network does not support SRVCC switching is solved.
Drawings
Fig. 1 is a schematic flow chart of a handover processing method according to an embodiment of the present invention 1;
fig. 2 is a schematic flow chart of a handover processing method according to an embodiment of the present invention 2;
fig. 3 is a schematic flow chart of a handover processing method according to an embodiment of the present invention 3;
fig. 4 is a schematic flow chart of a handover processing method according to an embodiment of the present invention 4;
fig. 5 is a schematic diagram of a first network device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second network device according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a hardware architecture according to an embodiment of the present invention.
Detailed Description
So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.
The first embodiment,
An embodiment of the present invention provides a handover processing method, which is applied to a first network device, and as shown in fig. 1, the method includes:
step 101: when receiving an SRVCC switching capability indication of User Equipment (UE) and/or determining that the UE performs voice service under a 5G network, sending configuration information to the UE; the configuration information is used for triggering the UE to carry out inter-system measurement;
step 102: and receiving the measurement information reported by the UE in the triggering of the corresponding measurement event, and judging whether to execute SRVCC switching when the UE performs the voice service in the 5G network based on the measurement information.
In this embodiment, the voice service in the 5G network may be a VoNR voice service.
The first network device may be a device in an access network.
After the network side receives the UE SRVCC HO Capability Indicator and/or carries out the VoNR voice service, the gNB sends RRC Connection Reconfiguration to trigger the UE to respectively measure the eNB signal and the NB signal;
specifically, the configuration measurement event includes at least one of:
the signal strength of the adjacent cells of the different system exceeds a first threshold value;
the signal of the main cell is lower than a second threshold value, and the signal of the different system adjacent cell exceeds a third threshold value;
in at least two different system adjacent cells, the signal strength of one different system adjacent cell exceeds a corresponding fourth threshold value, and the signal strength of the other different system adjacent cell is higher than or lower than a fifth threshold value;
in the main cell and at least two inter-system neighbor cells, the signal strength of the main cell is lower than a sixth threshold value, the signal strength of one inter-system neighbor cell is higher or lower than a corresponding seventh threshold value, and the signal strength of the other inter-system neighbor cell is higher or lower than an eighth threshold value.
The measurement event may be any B event included in the prior art, that is, the following measurement event issues are performed for NR/LTE and NR/CDMA, respectively, and may include, for example:
a first event, reporting when a signal of an adjacent Inter-system cell is higher than a corresponding first threshold, that is, an Inter RAT neighbor cells between threshold;
a second event, when the signal intensity of the main cell is lower than a second threshold value and the signal intensity of the adjacent cell of the different system exceeds a third threshold value, reporting; for example, the PCell belongings word threshold1 and the inter RAT neighbor books threshold 2.
In addition, the measurement event may introduce a new measurement event, and report the signal strengths of three inter-system cells simultaneously, for example, the measurement event may include:
a first adding event, which is to report when the signal strength of one Inter-system neighboring cell exceeds a corresponding fourth threshold value and the signal strength of another Inter-system neighboring cell is higher or lower than a fifth threshold value, in at least two Inter-system neighboring cells, for example, Inter RAT-1 neighbor beacons threshold1, Inter RAT-2 neighbor beacons/word threshold2, or vice versa;
a second new event, which triggers the UE to report when the signal strength of the main cell is lower than a sixth threshold, the signal strength of one inter-system neighboring cell is higher or lower than a corresponding seventh threshold, and the signal strength of another inter-system neighboring cell is higher or lower than an eighth threshold, in the main cell and the at least two inter-system neighboring cells; for example, PCell beacons word threshold1 and Interrat-1 neighbor beacons beta/word threshold2 and Interrat-2 neighbor beacons beta/word threshold 3.
It should be noted that the 8 threshold values may be set according to actual situations, where all of the threshold values may be the same, or all of the threshold values may not be the same, or at least part of the threshold values may be the same.
At this time, when the UE determines whether to perform SRVCC handover when performing a voice service in a 5G network based on the measurement information, the method further includes: and determining that the UE moves out of the 5G coverage range when the UE carries out the voice service under the 5G network.
Specifically, the determining whether to perform the SRVCC handover includes:
when it is determined, based on the measurement information, that the current 5G cell signal is below a corresponding threshold value,
selecting a target cell from at least two inter-system adjacent cells, and triggering the UE to be switched from the 5G cell to the target cell;
the inter-system adjacent cell is an LTE system adjacent cell or a 3G system adjacent cell; and, the at least two inter-system neighboring cells belong to at least two inter-systems.
That is, when there are only two inter-system neighboring cells, the inter-system neighboring cell may be an LTE system neighboring cell, and the other inter-system neighboring cell may be a 3G system neighboring cell; and determining to switch to the LTE system or the 3G system according to specific conditions. Further, when the measurement event is triggered and the UE reports a poor gNB signal, the gNB decides to trigger the handover of the target cell, which is better than the eNB or NB signal.
When the selected target cell is an LTE cell, triggering the UE to execute inter-system switching operation; and when the selected target cell is the 3G cell, triggering the UE to execute the SRVCC. That is, if it is determined to switch to the LTE network, that is, the 4G network, it may be understood as an inter-system handover process; and if the switching from the 5G network to the 3G network is determined, the SRVCC switching is performed.
On the basis of the scheme, the method further comprises the following steps: when receiving an SRVCC switching capability indication of User Equipment (UE) and/or determining that the UE performs voice service under a 5G network, acquiring a self-interference parameter reported by the UE; determining whether to trigger SRVCC based on the self-interference parameter to handover the UE from a 5G cell to a 3G cell.
That is, after receiving the UE SRVCC HO Capability Indicator and/or performing the VoNR voice service (i.e. the voice service in the 5G network), the network side considers the self-interference problem, that is, if the UE operates in NR and LTE simultaneously, and the UE performs the voice service on NR, after moving out of the NR coverage, the self-interference problem under the LTE bi-pass condition needs to be considered, and if the self-interference is large, the SRVCC handover needs to be performed even if the LTE coverage is good
To this end, configuration information is sent to the UE, including: and sending the configuration information through RRC connection reconfiguration information. That is, when the UE performs VoNR voice at NR, RAN (first network device) issues a new parameter indicating the self-interference parameter of the UE in RRC Connection Reconfiguration.
The method further comprises the following steps:
and issuing an indication parameter in the configuration information, wherein the indication parameter is used for indicating the UE and a measurement event to report the self-interference parameter together. That is, the first network device may instruct the UE to report the self-interference parameter separately, or report the self-interference parameter together with the measurement event or report the self-interference parameter separately; further, the reporting together with the measurement event may be reporting together with the first event or the second event, or may be reporting together with the first new time increment or the second new event.
The self-interference parameter is characterized in that: when the UE has a first frequency band in which the LTE works before switching and a second frequency band which is added after switching and works in the LTE, estimating the influence of mutual interference on relevant parameters of data transmission of the UE when the first frequency band and the second frequency band simultaneously carry out double-pass. That is, the self-interference parameter is an influence of interference generated by two bands estimated based on the first Band for switching the current existing LTE operation and the second Band for switching the newly added LTE operation by the UE when the two bands simultaneously perform two passes on data transmission, on throughput, delay, and success rate of data transmission.
Still further, after the first network device completes determining to perform the SRVCC handover, the method may further include:
when the SRVCC handover is determined to be executed, generating a handover request based on the identification of the base station of the target 3G cell in the SRVCC handover and sending the handover request to a core network; wherein, the handover request is used to enable the core network to determine that the executed handover operation is SRVCC handover according to the identifier of the base station of the target 3G cell in the handover request and the corresponding reconfiguration request.
For example, referring to fig. 2, the first network device provided in this embodiment may be an NG-RAN (i.e., a next generation radio access network device) in the figure; after receiving a measurement report sent by the UE, the UE executes the series of processing and then determines to execute SRVCC; then, sending a handover request to a core network (specifically, an AMF), and then sending a relocation request to an MME by the AMF; the MME judges whether to execute SRVCC handover or not based on the relocation request and the identification information of the 3G base station in the handover request; at this time, the MME also performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing procedure existing in the prior art, and is not described again in this embodiment); after the completion, the core network and the access network complete the switching preparation operation of the SRVCC; after completing the switching preparation, sending relocation response information to the AMF, and sending a switching instruction to the access network RAN by the AMF; finally, the entire system performs the SRVCC process.
Therefore, by adopting the scheme, when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and whether the UE is controlled to perform the SRVCC switching is determined based on the measurement information of the inter-system measurement. Therefore, the control of the UE to execute the SRVCC processing in the 5G network can be realized, and the problem that the current 5G network does not support SRVCC switching is solved.
Example II,
An embodiment of the present invention provides a handover processing method, which is applied to a UE, and as shown in fig. 3, the method includes:
step 301: sending an indication with SRVCC switching capability to a network side, and/or receiving configuration information sent by the network side when the UE performs voice service in a 5G network; the configuration information is used for triggering the UE to carry out inter-system measurement;
step 302: and when the inter-system measurement is carried out, the measurement information is reported to the network side based on the trigger of the corresponding measurement event.
In this embodiment, the voice service in the 5G network may be a VoNR voice service.
The first network device may be a device in an access network.
After the network side receives the UE SRVCC HO Capability Indicator and/or carries out the VoNR voice service, the gNB sends RRC Connection Reconfiguration to trigger the UE to respectively measure the eNB signal and the NB signal;
specifically, the configuration measurement event includes at least one of:
the signal strength of the adjacent cells of the different system exceeds a first threshold value;
the signal of the main cell is lower than a second threshold value, and the signal of the adjacent cell of the different system exceeds a third threshold value;
in at least two different system adjacent cells, the signal strength of one different system adjacent cell exceeds a corresponding fourth threshold value, and the signal strength of the other different system adjacent cell is higher than or lower than a fifth threshold value;
in the main cell and at least two inter-system neighbor cells, the signal strength of the main cell is lower than a sixth threshold value, the signal strength of one inter-system neighbor cell is higher or lower than a corresponding seventh threshold value, and the signal strength of the other inter-system neighbor cell is higher or lower than an eighth threshold value.
The measurement event may be any B event included in the prior art, that is, the following measurement event issues are performed for NR/LTE and NR/CDMA, respectively, and may include, for example:
a first event, reporting when a signal of an adjacent Inter-system cell is higher than a corresponding first threshold, that is, an Inter RAT neighbor cells between threshold;
a second event, when the signal intensity of the main cell is lower than a second threshold value and the signal intensity of the adjacent cell of the different system exceeds a third threshold value, reporting; for example, the PCell belongings word threshold1 and the inter RAT neighbor books threshold 2.
In addition, the measurement event may introduce a new measurement event, and report the signal strengths of three inter-system cells simultaneously, for example, the measurement event may include:
a first adding event, which is to report when the signal strength of one Inter-system neighboring cell exceeds a corresponding fourth threshold value and the signal strength of another Inter-system neighboring cell is higher or lower than a fifth threshold value, in at least two Inter-system neighboring cells, for example, Inter RAT-1 neighbor beacons threshold1, Inter RAT-2 neighbor beacons/word threshold2, or vice versa;
a second new event, which triggers the UE to report when the signal strength of the main cell is lower than a sixth threshold, the signal strength of one inter-system neighboring cell is higher or lower than a corresponding seventh threshold, and the signal strength of another inter-system neighboring cell is higher or lower than an eighth threshold, in the main cell and the at least two inter-system neighboring cells; for example, PCell beacons word threshold1 and Interrat-1 neighbor beacons beta/word threshold2 and Interrat-2 neighbor beacons beta/word threshold 3.
On the basis of the scheme, the method further comprises the following steps: and acquiring an indication parameter issued by the network side through the configuration information, wherein the indication parameter is used for indicating the UE and the measurement event to report the self-interference parameter together.
The self-interference parameter is characterized in that: when the UE has a first frequency band in which the LTE works before switching and a second frequency band which is added after switching and works in the LTE, estimating the influence of mutual interference on relevant parameters of data transmission of the UE when the first frequency band and the second frequency band simultaneously carry out double-pass. That is, the self-interference parameter is an influence of interference generated by two bands estimated based on the first Band for switching the current existing LTE operation and the second Band for switching the newly added LTE operation by the UE when the two bands simultaneously perform two passes on data transmission, on throughput, delay, and success rate of data transmission.
That is, after receiving the UE SRVCC HO Capability Indicator and/or performing the VoNR voice service (i.e. the voice service in the 5G network), the network side considers the self-interference problem, that is, if the UE operates in NR and LTE simultaneously, and the UE performs the voice service on NR, after moving out of the NR coverage, the self-interference problem under the LTE bi-pass condition needs to be considered, and if the self-interference is large, the SRVCC handover needs to be performed even if the LTE coverage is good
To this end, configuration information is sent to the UE, including: and sending the configuration information through RRC connection reconfiguration information. That is, when the UE performs VoNR voice at NR, RAN (first network device) issues a new parameter indicating the self-interference parameter of the UE in RRC Connection Reconfiguration.
Still further, after the first network device completes determining to perform the SRVCC handover, the method may further include:
when the SRVCC switching is determined to be executed, a switching request is generated and sent to a core network based on the identification of the base station of the target 3G cell in the SRVCC switching; wherein, the handover request is used to enable the core network to determine that the executed handover operation is SRVCC handover according to the identifier of the base station of the target 3G cell in the handover request and the corresponding reconfiguration request.
For example, referring to fig. 2, the first network device provided in this embodiment may be an NG-RAN (i.e., a next generation radio access network device) in the figure; after receiving a measurement report sent by the UE, the UE executes the series of processing and then determines to execute SRVCC; then, sending a handover request to a core network (specifically, an AMF), and then sending a relocation request to an MME by the AMF; at this time, the MME also performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing procedure existing in the prior art, and is not described again in this embodiment); after the completion, the core network and the access network complete the switching preparation operation of the SRVCC; after completing the switching preparation, sending relocation response information to the AMF, and sending a switching instruction to the access network RAN by the AMF; finally, the entire system performs the SRVCC process.
Therefore, by adopting the scheme, when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and whether the UE is controlled to perform the SRVCC switching is determined based on the measurement information of the inter-system measurement. Therefore, the control of the UE to execute the SRVCC processing in the 5G network can be realized, and the problem that the current 5G network does not support SRVCC switching is solved.
Example III,
An embodiment of the present invention provides a handover processing method, which is applied to a second network device, and as shown in fig. 4, the method includes:
step 401: receiving a relocation request sent by AMF; the relocation request is sent by AMF after receiving a handover request sent by an access network, and the relocation request contains base station identification information of a 3G network;
step 402: and judging whether to execute SRVCC switching or not based on the relocation request.
When it is determined that the SRVCC handover is performed, a handover preparation operation of the SRVCC is completed. After the SRVCC handover preparation operation is completed, sending relocation response information to the AMF, so that the AMF sends a handover instruction to an access network RAN; the SRVCC process is performed.
In this embodiment, referring to fig. 2, the method specifically includes: the first network device may be an NG-RAN in the figure (i.e., a next generation radio access network device); after receiving a measurement report sent by the UE, the UE executes the series of processing and then determines to execute SRVCC; then, sending a handover request to a core network (specifically, an AMF), and then sending a relocation request to an MME by the AMF; the MME judges whether to execute SRVCC handover or not based on the relocation request and the identification information of the 3G base station in the handover request; at this time, the MME also performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing procedure existing in the prior art, and is not described again in this embodiment); after the completion, the core network and the access network complete the switching preparation operation of the SRVCC; after completing the switching preparation, sending relocation response information to the AMF, and sending a switching instruction to the access network RAN by the AMF; finally, the entire system performs SRVCC processing.
Therefore, by adopting the scheme, when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and the SRVCC switching is determined to be performed based on the measurement information of the inter-system measurement. Therefore, the control of the UE to execute the SRVCC processing in the 5G network can be realized, and the problem that the current 5G network does not support SRVCC switching is solved.
Example four,
An embodiment of the present invention provides a first network device, and as shown in fig. 5, the method includes:
a first communication unit 51, configured to send configuration information to a user equipment UE when receiving an SRVCC handover capability indication performed by the UE and/or determining that the UE performs a voice service in a 5G network; the configuration information is used for triggering the UE to carry out inter-system measurement;
the first processing unit 52 receives the measurement information reported by the UE triggered by the corresponding measurement event, and determines whether to perform SRVCC handover when the UE performs a voice service in the 5G network based on the measurement information.
In this embodiment, the voice service in the 5G network may be a VoNR voice service.
The first network device may be a device in an access network.
After the network side receives the UE SRVCC HO Capability Indicator and/or carries out the VoNR voice service, the gNB sends RRC Connection Reconfiguration to trigger the UE to respectively measure the eNB signal and the NB signal;
specifically, the configuration measurement event includes at least one of:
the signal strength of the adjacent cells of the different system exceeds a first threshold value;
the signal of the main cell is lower than a second threshold value, and the signal of the adjacent cell of the different system exceeds a third threshold value;
in at least two different system adjacent cells, the signal strength of one different system adjacent cell exceeds a corresponding fourth threshold value, and the signal strength of the other different system adjacent cell is higher than or lower than a fifth threshold value;
in the main cell and at least two inter-system neighbor cells, the signal strength of the main cell is lower than a sixth threshold value, the signal strength of one inter-system neighbor cell is higher or lower than a corresponding seventh threshold value, and the signal strength of the other inter-system neighbor cell is higher or lower than an eighth threshold value.
The measurement event may be any B event included in the prior art, that is, the following measurement event issues are performed for NR/LTE and NR/CDMA, respectively, and may include, for example:
a first event, when a signal of an adjacent Inter-system cell is higher than a corresponding first threshold, reporting, that is, an Inter RAT neighbor beacons threshold;
a second event, when the signal intensity of the main cell is lower than a second threshold value and the signal intensity of the adjacent cell of the different system exceeds a third threshold value, reporting; for example, the PCell belongings word threshold1 and the inter RAT neighbor books threshold 2.
In addition, the measurement event may introduce a new measurement event, and report the signal strengths of three inter-system cells simultaneously, for example, the measurement event may include:
a first adding event, which is to report when the signal strength of one Inter-system neighboring cell exceeds a corresponding fourth threshold value and the signal strength of another Inter-system neighboring cell is higher or lower than a fifth threshold value, in at least two Inter-system neighboring cells, for example, Inter RAT-1 neighbor beacons threshold1, Inter RAT-2 neighbor beacons/word threshold2, or vice versa;
a second new event, which triggers the UE to report when the signal strength of the main cell is lower than a sixth threshold, the signal strength of one inter-system neighboring cell is higher or lower than a corresponding seventh threshold, and the signal strength of another inter-system neighboring cell is higher or lower than an eighth threshold, in the main cell and the at least two inter-system neighboring cells; for example, PCell beacons word threshold1 and Interrat-1 neighbor beacons beta/word threshold2 and Interrat-2 neighbor beacons beta/word threshold 3.
It should be noted that the 8 threshold values may be set according to actual situations, where all of the threshold values may be the same, or all of the threshold values may not be the same, or at least part of the threshold values may be the same.
At this time, when the UE determines whether to perform SRVCC handover when performing a voice service in a 5G network based on the measurement information, the method further includes: and determining that the UE moves out of the 5G coverage range when the UE carries out the voice service under the 5G network.
Specifically, when the first processing unit 52 determines that the current 5G cell signal is lower than the corresponding threshold value based on the measurement information,
selecting a target cell from at least two different system adjacent cells, and triggering the UE to be switched from the 5G cell to the target cell;
the inter-system adjacent cell is an LTE system adjacent cell or a 3G system adjacent cell; and, the at least two inter-system neighboring cells belong to at least two inter-systems.
That is, when there are only two inter-system neighboring cells, the inter-system neighboring cell may be an LTE system neighboring cell, and the other inter-system neighboring cell may be a 3G system neighboring cell; and determining to switch to the LTE system or the 3G system according to specific conditions. Further, when the measurement event is triggered and the UE reports a poor gNB signal, the gNB decides to trigger the handover of the target cell, which is better than the eNB or NB signal.
When the selected target cell is an LTE cell, triggering the UE to execute inter-system switching operation; and when the selected target cell is the 3G cell, triggering the UE to execute the SRVCC. That is, if it is determined to switch to the LTE network, that is, the 4G network, it may be understood as an inter-system handover process; and if the switching from the 5G network to the 3G network is determined, the SRVCC switching is performed.
On the basis of the scheme, the method further comprises the following steps: when receiving an SRVCC switching capability indication of User Equipment (UE) and/or determining that the UE performs voice service under a 5G network, acquiring a self-interference parameter reported by the UE; determining whether to trigger SRVCC based on the self-interference parameter to handover the UE from a 5G cell to a 3G cell.
That is, after receiving the UE SRVCC HO Capability Indicator and/or performing the VoNR voice service (i.e. the voice service in the 5G network), the network side considers the self-interference problem, that is, if the UE operates in NR and LTE simultaneously, and the UE performs the voice service on NR, after moving out of the NR coverage, the self-interference problem under the LTE bi-pass condition needs to be considered, and if the self-interference is large, the SRVCC handover needs to be performed even if the LTE coverage is good
To this end, the first communication unit transmits the configuration information through RRC connection reconfiguration information. That is, when the UE performs VoNR voice at NR, RAN (first network device) issues a new parameter indicating the self-interference parameter of the UE in RRC Connection Reconfiguration.
And the first communication unit issues an indication parameter in the configuration information, wherein the indication parameter is used for indicating the UE and a measurement event to report the self-interference parameter together. That is, the first network device may instruct the UE to report the self-interference parameter separately, or report the self-interference parameter together with the measurement event or report the self-interference parameter separately; further, the reporting together with the measurement event may be the reporting together with the first event or the second event, or may be the reporting together with the first new time increment or the second new event.
The self-interference parameter is characterized in that: when the UE has a first frequency band where the LTE works before switching and a second frequency band which works in the LTE and is added after switching, estimating the influence of mutual interference on relevant parameters of data transmission of the UE when the first frequency band and the second frequency band are subjected to double-pass at the same time. That is, the self-interference parameter is an influence of interference generated by two bands estimated based on the first Band for switching the current existing LTE operation and the second Band for switching the newly added LTE operation by the UE when the two bands simultaneously perform two passes on data transmission, on throughput, delay, and success rate of data transmission.
Still further, when determining to execute SRVCC handover, the first processing unit generates a handover request based on an identifier of a base station of a target 3G cell in the SRVCC handover and sends the handover request to a core network; wherein, the handover request is used to enable the core network to determine that the executed handover operation is SRVCC handover according to the identifier of the base station of the target 3G cell in the handover request and the corresponding reconfiguration request.
For example, referring to fig. 2, the first network device provided in this embodiment may be an NG-RAN (i.e., a next generation radio access network device) in the figure; after receiving a measurement report sent by the UE, the UE executes the series of processing and then determines to execute SRVCC; then, sending a handover request to a core network (specifically, an AMF), and then sending a relocation request to an MME by the AMF; the MME judges whether to execute SRVCC handover or not based on the relocation request and the identification information of the 3G base station in the handover request; at this time, the MME also performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing procedure existing in the prior art, and is not described again in this embodiment); after the completion, the core network and the access network complete the switching preparation operation of the SRVCC; after completing the switching preparation, sending relocation response information to the AMF, and sending a switching instruction to the access network RAN by the AMF; finally, the entire system performs the SRVCC process.
Therefore, by adopting the scheme, when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and whether the UE is controlled to perform the SRVCC switching is determined based on the measurement information of the inter-system measurement. Therefore, the control of the UE to execute the SRVCC processing in the 5G network can be realized, and the problem that the current 5G network does not support SRVCC switching is solved.
Examples V,
An embodiment of the present invention provides a UE, including:
the second communication unit is used for sending an indication with SRVCC switching capability to the network side and/or receiving the configuration information sent by the network side when the UE carries out voice service under the 5G network; the configuration information is used for triggering the UE to carry out inter-system measurement;
and when the inter-system measurement is carried out, the measurement information is triggered and reported to the network side based on the corresponding measurement event.
In this embodiment, the voice service in the 5G network may be a VoNR voice service.
The first network device may be a device in an access network.
After the network side receives the UE SRVCC HO Capability Indicator and/or carries out the VoNR voice service, the gNB sends RRC Connection Reconfiguration to trigger the UE to respectively measure the eNB signal and the NB signal;
specifically, the configuration measurement event includes at least one of:
the signal strength of the adjacent cells of the different system exceeds a first threshold value;
the signal of the main cell is lower than a second threshold value, and the signal of the different system adjacent cell exceeds a third threshold value;
in at least two different system adjacent cells, the signal strength of one different system adjacent cell exceeds a corresponding fourth threshold value, and the signal strength of the other different system adjacent cell is higher than or lower than a fifth threshold value;
in the main cell and at least two inter-system neighbor cells, the signal strength of the main cell is lower than a sixth threshold value, the signal strength of one inter-system neighbor cell is higher or lower than a corresponding seventh threshold value, and the signal strength of the other inter-system neighbor cell is higher or lower than an eighth threshold value.
The measurement event may be any B event included in the prior art, that is, the following measurement event issues are performed for NR/LTE and NR/CDMA, respectively, and may include, for example:
a first event, reporting when a signal of an adjacent Inter-system cell is higher than a corresponding first threshold, that is, an Inter RAT neighbor cells between threshold;
a second event, when the signal intensity of the main cell is lower than a second threshold value and the signal intensity of the adjacent cell of the different system exceeds a third threshold value, reporting; for example, the PCell belongings word threshold1 and the inter RAT neighbor books threshold 2.
In addition, the measurement event may introduce a new measurement event, and report the signal strengths of three inter-system cells simultaneously, for example, the measurement event may include:
a first adding event, which is to report when the signal strength of one Inter-system neighboring cell exceeds a corresponding fourth threshold value and the signal strength of another Inter-system neighboring cell is higher or lower than a fifth threshold value, in at least two Inter-system neighboring cells, for example, Inter RAT-1 neighbor beacons threshold1, Inter RAT-2 neighbor beacons/word threshold2, or vice versa;
a second new event, which triggers the UE to report when the signal strength of the main cell is lower than a sixth threshold, the signal strength of one inter-system neighboring cell is higher or lower than a corresponding seventh threshold, and the signal strength of another inter-system neighboring cell is higher or lower than an eighth threshold, in the main cell and the at least two inter-system neighboring cells; for example, PCell beacons word threshold1 and Interrat-1 neighbor beacons beta/word threshold2 and Interrat-2 neighbor beacons beta/word threshold 3.
On the basis of the foregoing scheme, the second communication unit obtains an indication parameter issued by the network side through the configuration information, where the indication parameter is used to indicate that the UE and the measurement event report the self-interference parameter together.
The self-interference parameter is characterized in that: when the UE has a first frequency band in which the LTE works before switching and a second frequency band which is added after switching and works in the LTE, estimating the influence of mutual interference on relevant parameters of data transmission of the UE when the first frequency band and the second frequency band simultaneously carry out double-pass. That is, the self-interference parameter is an influence of interference generated by two bands estimated based on the first Band for switching the current existing LTE operation and the second Band for switching the newly added LTE operation by the UE when the two bands simultaneously perform two passes on data transmission, on throughput, delay, and success rate of data transmission.
That is, after receiving the UE SRVCC HO Capability Indicator and/or performing the VoNR voice service (i.e. the voice service in the 5G network), the network side considers the self-interference problem, that is, if the UE operates in NR and LTE simultaneously, and the UE performs the voice service on NR, after moving out of the NR coverage, the self-interference problem under the LTE bi-pass condition needs to be considered, and if the self-interference is large, the SRVCC handover needs to be performed even if the LTE coverage is good
To this end, configuration information is sent to the UE, including: and sending the configuration information through RRC connection reconfiguration information. That is, when the UE performs VoNR voice, the RAN (first network device) issues a new parameter indicating the self-interference parameter of the UE in RRC Connection Reconfiguration.
Further, when determining to execute the SRVCC handover, the second communication unit generates a handover request based on the identifier of the base station of the target 3G cell in the SRVCC handover and sends the handover request to the core network; wherein, the handover request is used to enable the core network to determine that the executed handover operation is SRVCC handover according to the identifier of the base station of the target 3G cell in the handover request and the corresponding reconfiguration request.
For example, referring to fig. 2, the first network device provided in this embodiment may be an NG-RAN (i.e., a next generation radio access network device) in the figure; after receiving a measurement report sent by the UE, the UE performs the series of processing and then determines to perform SRVCC; then, sending a handover request to a core network (specifically, an AMF), and then sending a relocation request to an MME by the AMF; at this time, the MME also performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing flow existing in the prior art, and is not described in this embodiment again); after the completion, the core network and the access network complete the switching preparation operation of the SRVCC; after completing the switching preparation, sending relocation response information to the AMF, and sending a switching instruction to the access network RAN by the AMF; finally, the entire system performs SRVCC processing.
Therefore, by adopting the scheme, when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and whether the UE is controlled to perform the SRVCC switching is determined based on the measurement information of the inter-system measurement. Therefore, the control of the UE to execute the SRVCC processing in the 5G network can be realized, and the problem that the current 5G network does not support SRVCC switching is solved.
Examples six,
An embodiment of the present invention provides a second network device, as shown in fig. 6, including:
a third communication unit 61, which receives the relocation request from the AMF; the relocation request is sent by AMF after receiving a handover request sent by an access network, and the relocation request contains base station identification information of a 3G network;
the third processing unit 62 determines whether to perform SRVCC handover based on the relocation request.
The third processing unit 62, when determining to execute SRVCC handover, completes the handover preparation operation of SRVCC. After the SRVCC handover preparation operation is completed, sending relocation response information to the AMF through a third communication unit, so that the AMF sends a handover instruction to an access network RAN; the SRVCC process is performed.
In this embodiment, referring to fig. 2, the method specifically includes: the first network device may be a NG-RAN (i.e., a next generation radio access network device) in the figure; after receiving a measurement report sent by the UE, the UE executes the series of processing and then determines to execute SRVCC; then, sending a handover request to a core network (specifically, an AMF), and then sending a relocation request to an MME by the AMF; the MME judges whether to execute SRVCC handover or not based on the relocation request and the identification information of the 3G base station in the handover request; at this time, the MME also performs processing such as SM context acquisition and response with the SMF/PGW-C in the core network (not shown in the figure, but is a processing procedure existing in the prior art, and is not described again in this embodiment); after the completion, the core network and the access network complete the switching preparation operation of the SRVCC; after completing the switching preparation, sending relocation response information to the AMF, and sending a switching instruction to the access network RAN by the AMF; finally, the entire system performs SRVCC processing.
Therefore, by adopting the scheme, when the UE has the SRVCC switching capability or the UE performs the voice service in the 5G network, the UE is triggered to perform the inter-system measurement, and the SRVCC switching is determined to be performed based on the measurement information of the inter-system measurement. Therefore, the control of the UE to execute the SRVCC processing in the 5G network can be realized, and the problem that the current 5G network does not support SRVCC switching is solved.
An embodiment of the present invention further provides a hardware composition architecture of a user device or a network device, as shown in fig. 7, including: at least one processor 71, memory 72, at least one network interface 73. The various components are coupled together by a bus system 74. It will be appreciated that the bus system 74 is used to enable communications among the components of the connection. The bus system 74 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 74 in fig. 7.
It will be appreciated that the memory 72 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory.
In some embodiments, memory 72 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:
an operating system 721, and application programs 722.
Wherein the processor 71 is configured to: the method steps of any one of the first to third embodiments can be processed, and are not described herein again.
An embodiment of the present invention provides a computer storage medium, which stores computer-executable instructions, and when executed, implements the method steps of any one of the first to third embodiments.
The above-mentioned device of the embodiment of the present invention, if implemented in the form of software functional module and sold or used as an independent product, may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, or an optical disk, and various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.
Correspondingly, the embodiment of the present invention further provides a computer storage medium, in which a computer program is stored, and the computer program is configured to execute the data scheduling method of the embodiment of the present invention.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, and the scope of the invention should not be limited to the embodiments described above.
Claims (25)
1. A switching processing method is applied to a first network device, and comprises the following steps:
when receiving an SRVCC switching capability indication of User Equipment (UE) and/or determining that the UE performs voice service under a 5G network, sending configuration information to the UE; the configuration information is used for triggering the UE to carry out inter-system measurement;
receiving measurement information reported by the UE in triggering of a corresponding measurement event, and acquiring a self-interference parameter reported by the UE; the self-interference parameter is characterized in that: when the UE has a first frequency band in which the LTE works before switching and a second frequency band which is added after switching and works in the LTE, estimating the influence of mutual interference on relevant parameters of data transmission of the UE when the first frequency band and the second frequency band are simultaneously subjected to bi-pass;
judging whether to execute SRVCC switching when the UE performs the voice service under the 5G network based on the measurement information;
determining whether to trigger SRVCC based on the self-interference parameter to handover the UE from a 5G cell to a 3G cell.
2. The method of claim 1, further comprising:
configuring the measurement event includes at least one of:
the signal strength of the adjacent cells of the different system exceeds a first threshold value;
the signal intensity of the main cell is lower than a second threshold value, and the signal intensity of the adjacent cells of the different system exceeds a third threshold value;
in at least two different system adjacent cells, the signal strength of one different system adjacent cell exceeds a corresponding fourth threshold value, and the signal strength of the other different system adjacent cell is higher than or lower than a fifth threshold value;
in the main cell and at least two inter-system neighbor cells, the signal strength of the main cell is lower than a sixth threshold value, the signal strength of one inter-system neighbor cell is higher or lower than a corresponding seventh threshold value, and the signal strength of the other inter-system neighbor cell is higher or lower than an eighth threshold value.
3. The method of claim 2, wherein when determining whether the UE performs SRVCC handover while performing voice service in a 5G network based on the measurement information, the method further comprises:
and determining that the UE moves out of the 5G coverage range when the UE carries out the voice service under the 5G network.
4. The method of claim 2, wherein the determining whether to perform the SRVCC handover comprises:
when it is determined, based on the measurement information, that the current 5G cell signal is below a corresponding threshold value,
selecting a target cell from at least two different system adjacent cells, and triggering the UE to be switched from the 5G cell to the target cell;
the inter-system adjacent cell is an LTE system adjacent cell or a 3G system adjacent cell; and, the at least two inter-system neighboring cells belong to at least two inter-systems.
5. The method of claim 4, wherein the selecting the target cell from the at least two inter-system cells, triggering the UE to handover from the 5G cell to the target cell comprises:
when the selected target cell is an LTE cell, triggering the UE to execute inter-system switching operation;
and when the selected target cell is the 3G cell, triggering the UE to execute the SRVCC.
6. The method of claim 1, wherein sending configuration information to the UE comprises:
and sending the configuration information through RRC connection reconfiguration information.
7. The method of claim 1, further comprising:
and issuing an indication parameter in the configuration information, wherein the indication parameter is used for indicating the UE and a measurement event to report the self-interference parameter together.
8. The method of claim 1, further comprising:
when the SRVCC switching is determined to be executed, a switching request is generated and sent to a core network based on the identification of the base station of the target 3G cell in the SRVCC switching; wherein, the handover request is used to enable the core network to determine that the executed handover operation is SRVCC handover according to the identifier of the base station of the target 3G cell in the handover request and the corresponding reconfiguration request.
9. A switching processing method is applied to UE, and comprises the following steps:
sending an indication with SRVCC switching capability to a network side, and/or receiving configuration information sent by the network side when the UE performs voice service in a 5G network; the configuration information is used for triggering the UE to carry out inter-system measurement;
when carrying out inter-system measurement, based on the triggering of the corresponding measurement event and the measurement information reported to the network side, and sending a self-interference parameter to the network side, wherein the self-interference parameter is characterized in that: when the UE has a first frequency band in which the LTE works before switching and a second frequency band which is added after switching and works in the LTE, estimating the influence of mutual interference on relevant parameters of data transmission of the UE when the first frequency band and the second frequency band simultaneously carry out double-pass.
10. The method of claim 9, further comprising:
configuring the measurement event includes at least one of:
the signal strength of the adjacent cells of the different system exceeds a first threshold value;
the signal of the main cell is lower than a second threshold value, and the signal of the different system adjacent cell exceeds a third threshold value;
in at least two different system adjacent cells, the signal strength of one different system adjacent cell exceeds a corresponding fourth threshold value, and the signal strength of the other different system adjacent cell is higher than or lower than a fifth threshold value;
in the main cell and at least two inter-system neighbor cells, the signal strength of the main cell is lower than a sixth threshold value, the signal strength of one inter-system neighbor cell is higher or lower than a corresponding seventh threshold value, and the signal strength of the other inter-system neighbor cell is higher or lower than an eighth threshold value.
11. The method according to claim 9, wherein when receiving the configuration information sent by the network side, the method further comprises:
and acquiring an indication parameter issued by the network side through the configuration information, wherein the indication parameter is used for indicating the UE and the measurement event to report the self-interference parameter together.
12. A first network device, comprising:
the first communication unit is used for sending configuration information to the UE when receiving an SRVCC switching capability indication of the UE and/or determining that the UE carries out voice service under a 5G network; the configuration information is used for triggering the UE to carry out inter-system measurement;
the first processing unit is used for receiving the measurement information reported by the UE under the trigger of the corresponding measurement event and acquiring the self-interference parameter reported by the UE; the self-interference parameter is characterized in that: when the UE has a first frequency band in which the LTE works before switching and a second frequency band which is added after switching and works in the LTE, estimating the influence of mutual interference on relevant parameters of data transmission of the UE when the first frequency band and the second frequency band are simultaneously subjected to bi-pass;
the first processing unit further determines whether to execute SRVCC handover when the UE performs a voice service in a 5G network based on the measurement information;
the first processing unit further determines whether to trigger SRVCC to handover the UE from a 5G cell to a 3G cell based on the self-interference parameter.
13. The first network device of claim 12, wherein configuring a measurement event comprises at least one of:
the signal strength of the adjacent cells of the different system exceeds a first threshold value;
the signal intensity of the main cell is lower than a second threshold value, and the signal intensity of the adjacent cells of the different system exceeds a third threshold value;
in at least two different system adjacent cells, the signal strength of one different system adjacent cell exceeds a corresponding fourth threshold value, and the signal strength of the other different system adjacent cell is higher than or lower than a fifth threshold value;
in the main cell and at least two inter-system neighbor cells, the signal strength of the main cell is lower than a sixth threshold value, the signal strength of one inter-system neighbor cell is higher or lower than a corresponding seventh threshold value, and the signal strength of the other inter-system neighbor cell is higher or lower than an eighth threshold value.
14. The first network device of claim 13,
and the first processing unit is used for determining that the UE moves out of the 5G coverage range when the UE carries out voice service under the 5G network.
15. The first network device of claim 13,
the first processing unit, when determining that the current 5G cell signal is lower than the corresponding threshold value based on the measurement information, selects a target cell from at least two inter-system neighboring cells, and triggers the UE to switch from the 5G cell to the target cell;
the inter-system adjacent cell is an LTE system adjacent cell or a 3G system adjacent cell; and, the at least two inter-system neighboring cells belong to at least two inter-systems.
16. The first network device of claim 15,
the first processing unit triggers the UE to execute inter-system handover operation when the selected target cell is an LTE cell; and when the selected target cell is the 3G cell, triggering the UE to execute the SRVCC.
17. The first network device of claim 12,
the first communication unit transmits the configuration information through RRC connection reconfiguration information.
18. The first network device of claim 12,
and the first communication unit issues an indication parameter in the configuration information, wherein the indication parameter is used for indicating the UE and a measurement event to report the self-interference parameter together.
19. The first network device of claim 12,
the first processing unit generates a switching request based on the identification of the base station of the target 3G cell in the SRVCC switching and sends the switching request to a core network when the SRVCC switching is determined to be executed; wherein, the handover request is used to enable the core network to determine that the executed handover operation is SRVCC handover according to the identifier of the base station of the target 3G cell in the handover request and the corresponding reconfiguration request.
20. A UE, the UE comprising:
the second communication unit is used for sending an indication with SRVCC switching capability to the network side and/or receiving the configuration information sent by the network side when the UE carries out voice service under the 5G network; the configuration information is used for triggering the UE to carry out inter-system measurement;
when carrying out inter-system measurement, based on the triggering of the corresponding measurement event and the measurement information reported to the network side, and sending a self-interference parameter to the network side, wherein the self-interference parameter is characterized in that: when the UE has a first frequency band in which the LTE works before switching and a second frequency band which is added after switching and works in the LTE, estimating the influence of mutual interference on relevant parameters of data transmission of the UE when the first frequency band and the second frequency band simultaneously carry out double-pass.
21. The UE of claim 20,
configuring the measurement event includes at least one of:
the signal strength of the adjacent cells of the different system exceeds a first threshold value;
the signal of the main cell is lower than a second threshold value, and the signal of the different system adjacent cell exceeds a third threshold value;
in at least two different system adjacent cells, the signal strength of one different system adjacent cell exceeds a corresponding fourth threshold value, and the signal strength of the other different system adjacent cell is higher than or lower than a fifth threshold value;
in the main cell and at least two inter-system neighbor cells, the signal strength of the main cell is lower than a sixth threshold value, the signal strength of one inter-system neighbor cell is higher or lower than a corresponding seventh threshold value, and the signal strength of the other inter-system neighbor cell is higher or lower than an eighth threshold value.
22. The UE of claim 20, wherein the second communication unit is configured to obtain an indication parameter issued by the network side through the configuration information, and the indication parameter is used to indicate that the UE and the measurement event report the self-interference parameter together.
23. A first network device, comprising: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is adapted to perform the steps of the method of any one of claims 1 to 8 when running the computer program.
24. A user equipment, comprising: a processor and a memory for storing a computer program capable of running on the processor,
wherein the processor is adapted to perform the steps of the method of any one of claims 9-11 when running the computer program.
25. A computer storage medium storing computer-executable instructions that, when executed, perform the steps of the method of any one of claims 1-11.
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| WO2019140646A1 (en) | 2019-07-25 |
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