CN112020095A - Method for switching and processing uplink bandwidth part - Google Patents

Method for switching and processing uplink bandwidth part Download PDF

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Publication number
CN112020095A
CN112020095A CN201910450049.XA CN201910450049A CN112020095A CN 112020095 A CN112020095 A CN 112020095A CN 201910450049 A CN201910450049 A CN 201910450049A CN 112020095 A CN112020095 A CN 112020095A
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bwp
mobile terminal
switching
side device
handover
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CN112020095B (en
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刘建颖
周欣
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Potevio Information Technology Co Ltd
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Potevio Information Technology Co Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • 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
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a method for switching and processing an uplink bandwidth part, which is characterized by comprising the following steps: receiving a measurement report sent by a mobile terminal, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of BWPs configured for the mobile terminal by a network side device; if the mobile terminal is judged to meet the first BWP handover condition according to the channel parameters corresponding to the BWPs, sending a BWP handover command to the mobile terminal, where the BWP handover command includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP. The method for processing partial handover of uplink bandwidth provided in the embodiment of the present invention periodically reports the MR through the UE, and then the network side device determines whether the UE needs BWP handover according to the MR, which is beneficial to switching the UE to the BWP with little contention in advance before the uplink LBT failure, thereby avoiding the situation that the UE cannot send data all the time due to LBT failure, thereby reducing the time delay of data sending and improving the system performance.

Description

Method for switching and processing uplink bandwidth part
Technical Field
The invention relates to the technical field of communication, in particular to a method for partially switching and processing an uplink bandwidth.
Background
Although the usage of the licensed spectrum is efficient, the licensed spectrum is expensive and the total amount of the spectrum is limited, and the unlicensed spectrum gets increasing attention due to its rich available bandwidth and low license cost, and becomes a supplementary spectrum resource of an LTE/LTE-Advanced network deployed based on the licensed spectrum, thereby enhancing network services. In LTE, an unlicensed spectrum is used as a spectrum resource of an LTE device in a secondary cell, that is, the unlicensed spectrum is used as an auxiliary carrier to perform carrier aggregation networking with an LTE Licensed spectrum carrier, which is called Licensed Assisted Access (LAA). For the unlicensed spectrum, a Listen Before Talk (LBT) operation needs to be performed before sending data, and data can be sent only after the LBT is successful, otherwise, the data cannot be sent.
In the 5G new air interface NR technology, the use of an unlicensed spectrum, that is, NR-u (new Radio unlicensed), is also introduced, but the usage scenario of the unlicensed spectrum is different from that of LTE, and on the unlicensed spectrum, the unlicensed spectrum of NR needs to support an independent networking (standby), that is, all system information, PDCCH, and the like need to be transmitted on the unlicensed spectrum. NR proposes the concept of bandwidth part (BWP), i.e. the terminal UE has only one active BWP at a time on one cell or one carrier. NR-U mainly contains the following scenarios:
-performing carrier aggregation with the licensed frequency band as PCell and the unlicensed frequency band as Scell;
-dual connectivity between LTE licensed band as Pcell and NR unlicensed band as PScell;
-a dual connection between a licensed NR frequency band as Pcell and an NR unlicensed frequency band as PScell;
-NR cell, downlink unlicensed band, uplink licensed band;
-standalone NR-U。
for a standby scene and a dual connection of an NR-U, if the UE has data to send, but the base station does not know that the UE needs to send the data, such as Scheduling Request (SR), preamble, and configured grant transmission, because the LBT operation is performed before the UE sends the data, the UE always fails in LBT detection due to high current channel occupancy, that is, the UE cannot send the data, and only after the data is successfully sent, the SR counter and the preamble transmission counter can add 1 to the counter, then another behavior cannot be triggered by the existing counter, and under the condition of channel occupancy, a delay problem of data transmission may be caused. Therefore, in the case of high channel occupancy, the transmission delay caused by the failure of the UE to perform LBT for a long time is a problem to be solved.
Disclosure of Invention
It is an object of embodiments of the present invention to provide a method for handling partial handover of an uplink bandwidth that overcomes or at least partially solves the above mentioned problems.
In order to solve the foregoing technical problem, in one aspect, an embodiment of the present invention provides a method for processing partial handover of an uplink bandwidth, where the method includes:
receiving a measurement report sent by a mobile terminal, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for the mobile terminal by a network side device;
if the mobile terminal is judged to meet the first BWP handover condition according to the channel parameters corresponding to the bandwidth portions BWP, sending a BWP handover command to the mobile terminal, where the BWP handover command includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
Further, the channel parameters respectively corresponding to the plurality of bandwidth portions BWP are specifically channel occupancy rates CO respectively corresponding to the bandwidth portions BWP.
Further, the BWP switching first condition includes:
and comparing the CO corresponding to the currently activated BWP of the mobile terminal with a first preset threshold, and if the CO corresponding to the currently activated BWP of the mobile terminal is greater than the first preset threshold, determining that the mobile terminal meets a first BWP switching condition.
The BWP switching instruction further comprises a second preset threshold;
correspondingly, the specifically step of performing BWP handover by the mobile terminal according to the identification information corresponding to the target BWP is:
and if the mobile terminal judges that the CO of the currently activated BWP is larger than the second preset threshold, performing BWP switching according to the identification information corresponding to the target BWP.
Further, the method further comprises:
issuing uplink authorization to the mobile terminal according to the scheduling request SR reported by the mobile terminal;
and receiving RRC reconfiguration completion information sent by the mobile terminal, wherein the RRC reconfiguration completion information comprises BWP switching completion information.
Further, the target BWP is determined according to the following steps:
and resolving the CO corresponding to each BWP from the measurement report, and selecting the BWP corresponding to the minimum CO as the target BWP.
On the other hand, an embodiment of the present invention provides a method for processing partial handover of an uplink bandwidth, including:
sending a measurement report to a network side device, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for a mobile terminal by the network side device;
receiving a BWP handover command sent by the network-side device, where the BWP handover command is sent by the network-side device after determining that the mobile terminal meets a BWP handover first condition according to channel parameters corresponding to the multiple bandwidth portions BWP, respectively; the BWP switching instruction comprises identification information corresponding to a target BWP;
and performing BWP switching according to the identification information corresponding to the target BWP.
Further, the channel parameters respectively corresponding to the bandwidth portions BWP are specifically channel occupancy rates CO respectively corresponding to the bandwidth portions BWP.
Further, the BWP switching first condition includes:
and comparing the CO corresponding to the currently activated BWP of the mobile terminal with a first preset threshold, and if the CO corresponding to the currently activated BWP of the mobile terminal is greater than the first preset threshold, determining that the mobile terminal meets a first BWP switching condition.
Further, the BWP switching instruction further includes a second preset threshold;
correspondingly, performing BWP handover according to the identification information corresponding to the target BWP specifically includes:
and if the CO of the currently activated BWP is judged and known to be larger than the second preset threshold, carrying out BWP switching according to the identification information corresponding to the target BWP.
Further, the method further comprises:
sending a scheduling request SR to the network side equipment and receiving an uplink authorization issued by the network side equipment;
and sending RRC reconfiguration completion information to the network side equipment, wherein the RRC reconfiguration completion information comprises BWP switching completion information.
In another aspect, an embodiment of the present invention provides a network-side device, including:
a first receiving module, configured to receive a measurement report sent by a mobile terminal, where the measurement report includes channel parameters respectively corresponding to multiple bandwidth portions BWP configured by a network-side device for the mobile terminal;
a first sending module, configured to send a BWP handover instruction to the mobile terminal if it is determined that the mobile terminal meets a first BWP handover condition according to the channel parameters corresponding to the multiple bandwidth portions BWP, where the BWP handover instruction includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
In another aspect, an embodiment of the present invention provides a mobile terminal, including:
a second sending module, configured to send a measurement report to a network-side device, where the measurement report includes channel parameters corresponding to multiple bandwidth portions BWP configured for a mobile terminal by the network-side device;
a second receiving module, configured to receive a BWP handover instruction sent by the network-side device, where the BWP handover instruction is sent by the network-side device after determining that the mobile terminal meets a BWP handover first condition according to channel parameters respectively corresponding to the multiple bandwidth portions BWP; the BWP switching instruction comprises identification information corresponding to a target BWP;
and the switching module is used for carrying out BWP switching according to the identification information corresponding to the target BWP.
In another aspect, an embodiment of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In yet another aspect, the present invention provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of the above method.
The method for processing partial handover of uplink bandwidth provided in the embodiment of the present invention periodically reports the MR through the UE, and then the network side device determines whether the UE needs BWP handover according to the MR, which is beneficial to switching the UE to the BWP with small contention in advance before the uplink LBT failure, thereby avoiding the situation that the UE cannot send data all the time due to LBT failure, thereby reducing the time delay of data transmission and improving the system performance.
Drawings
Fig. 1 is a schematic diagram of a partial handover processing method for an uplink bandwidth according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a method for processing partial handover of an uplink bandwidth according to another embodiment of the present invention;
fig. 3 is a schematic diagram of signaling interaction in a partial uplink bandwidth switching process according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a network-side device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a mobile terminal according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the NR unlicensed spectrum, for uplink transmission initiated by the UE, for example, the SR and preamble transmission counters are incremented by 1 only after LBT is successful, that is, after SR and preamble transmission is successfully transmitted, which may result in that the counters never reach the maximum configuration value under the condition that the channel is continuously occupied, thereby causing a great delay, and under some extreme conditions, a lock-up condition may be performed.
Fig. 1 is a schematic diagram of a method for processing partial uplink bandwidth handover according to an embodiment of the present invention, and as shown in fig. 1, to solve the above technical problem, an embodiment of the present invention provides a method for processing partial uplink bandwidth handover, where an execution subject of the method is a network side device, such as a base station, an MME, and the like, and the method includes:
step S101, receiving a measurement report sent by a mobile terminal, where the measurement report includes channel parameters respectively corresponding to a plurality of bandwidth portions BWP configured for the mobile terminal by a network side device.
Specifically, the network-side device may configure a plurality of BWPs for one UE, and the network-side device may configure the UE to perform measurement for the BWPs, where the UE performs measurement before reporting a measurement report periodically each time, acquires channel parameters corresponding to each BWP, and then performs LBT detection, and reports the acquired parameters after the LBT detection is successful. The channel parameter is used to measure the contention level of each BWP, for example, the measurement results of the parameters such as RSSI of the received signal strength indicator, CO of the channel occupancy rate, etc. may be used to measure the contention level of the BWP.
After acquiring the channel parameters corresponding to each BWP, the UE generates a measurement report, and sends the measurement report to the network side device through the currently activated BWP, and the network side device receives the measurement report sent by the mobile terminal.
Step S102, if it is determined that the mobile terminal meets the first BWP handover condition according to the channel parameters corresponding to the bandwidth portions BWP, sending a BWP handover command to the mobile terminal, where the BWP handover command includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
Specifically, after receiving the measurement report sent by the mobile terminal, the network-side device determines whether to switch UL BWP for the UE according to the measurement report, and if it is determined that the mobile terminal meets the first BWP switching condition according to the channel parameters corresponding to the bandwidth portions BWP, the network-side device determines to authorize the UE to switch BWP.
The network side device determines to authorize the UE to switch BWP, performs LBT detection, and after LBT succeeds, issues a BWP switching instruction to the UE, for example, an RRC reconfiguration message may be used as the BWP switching instruction. The BWP switch instruction includes identification information corresponding to the target BWP. The identification information corresponding to the target BWP is used to identify a handover target of the UE during BWP handover, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
The method for processing partial handover of uplink bandwidth provided in the embodiment of the present invention periodically reports the MR through the UE, and then the network side device determines whether the UE needs BWP handover according to the MR, which is beneficial to switching the UE to the BWP with small contention in advance before the uplink LBT failure, thereby avoiding the situation that the UE cannot send data all the time due to LBT failure, thereby reducing the time delay of data transmission and improving the system performance.
Based on any of the above embodiments, further, the channel parameters respectively corresponding to the bandwidth portions BWP are specifically channel occupancy rates CO respectively corresponding to the bandwidth portions BWP.
Specifically, before reporting a measurement report periodically each time, the UE performs measurement to obtain channel parameters corresponding to each BWP, and then performs LBT detection, and reports the obtained parameters after the LBT detection is successful. The channel parameter is used for measuring the competition degree of each BWP, and the embodiment of the invention adopts the channel occupancy CO as the channel parameter corresponding to the BWP and measures the competition degree of the BWP by the channel occupancy CO.
The uplink bandwidth partial switching processing method provided by the embodiment of the present invention uses the channel occupancy CO as a channel parameter corresponding to the BWP, and is used to measure the contention level of the BWP, so that the network side device can accurately know the channel state of each BWP, and is favorable to correctly determine whether the UE needs to switch the BWP.
Based on any one of the above embodiments, further, the BWP switching first condition includes:
and comparing the CO corresponding to the currently activated BWP of the mobile terminal with a first preset threshold, and if the CO corresponding to the currently activated BWP of the mobile terminal is greater than the first preset threshold, determining that the mobile terminal meets a first BWP switching condition.
Specifically, after receiving the measurement report, the network side device parses, from the measurement report, the channel occupancy CO corresponding to the bandwidth segment BWP currently activated by the UE.
Then, the CO of the BWP currently activated by the UE is compared with the size of the first preset threshold Thresh 1. If the CO of the BWP currently activated by the UE is greater than Thresh1, the UE needs to perform BWP switching, and if the CO of the BWP currently activated by the UE is less than or equal to Thresh1, the UE does not need to perform BWP switching.
Wherein, Thresh1 is a preset threshold, and the specific value can be configured according to actual needs.
The uplink bandwidth part switching processing method provided by the embodiment of the invention is beneficial to correctly determining whether the UE needs to switch the BWP or not by comparing the channel occupancy CO of the currently activated BWP with the first preset threshold value.
Based on any of the above embodiments, further, the BWP switching instruction further includes a second preset threshold;
correspondingly, the specifically step of performing BWP handover by the mobile terminal according to the identification information corresponding to the target BWP is:
and if the mobile terminal judges that the CO of the currently activated BWP is larger than the second preset threshold, performing BWP switching according to the identification information corresponding to the target BWP.
Specifically, the BWP handover command sent by the network-side device to the terminal further includes a second preset threshold Thresh 2. Wherein the second preset threshold Thresh2 is greater than the first preset threshold Thresh 1.
After resolving the BWP handover condition and the target BWP identifier from the BWP handover command, the UE continuously detects the wireless environment and determines whether the CO of the currently activated BWP is greater than a second preset threshold Thresh 2.
When the CO of the currently activated BWP of the UE is greater than Thresh2 and the BWP handover condition is satisfied, BWP handover may be performed and the UE may handover to the target BWP.
When the CO of the BWP currently activated by the UE is less than or equal to Thresh2, the BWP switching condition is not satisfied, and the BWP switching is not executed.
The method for processing partial switching of uplink bandwidth provided in the embodiment of the present invention sets the second preset threshold Thresh2 in the BWP switching instruction issued to the UE, so that the terminal performs switching when the CO of the currently activated BWP is greater than Thresh2, which not only ensures that the terminal does not have LBT failure, but also avoids repeatedly performing BWP switching.
Based on any embodiment, further, the method further includes:
issuing uplink authorization to the mobile terminal according to the scheduling request SR reported by the mobile terminal;
and receiving RRC reconfiguration completion information sent by the mobile terminal, wherein the RRC reconfiguration completion information comprises BWP switching completion information.
Specifically, after the terminal executes the BWP handover, the terminal executes LBT detection on the new BWP, and after the LBT is successful, the terminal sends a scheduling request SR to the network side device to request the uplink resource.
And the network side equipment issues an uplink grant (UL grant) to the mobile terminal according to the Scheduling Request (SR) reported by the mobile terminal.
And after receiving the UL grant sent by the network side equipment, the mobile terminal sends an RRC reconfiguration complete message to the network side equipment, wherein the message comprises BWP switching complete information.
According to the method for processing partial switching of the uplink bandwidth provided by the embodiment of the invention, after the network side device issues the BWP switching instruction to the terminal, the network side device receives the RRC reconfiguration completion message sent by the mobile terminal, so that whether the terminal successfully performs BWP switching or not can be known in time.
Based on any of the above embodiments, further, the target BWP is determined according to the following steps:
and resolving the CO corresponding to each BWP from the measurement report, and selecting the BWP corresponding to the minimum CO as the target BWP.
Specifically, after receiving the measurement report MR, the network-side device parses the CO of each BWP from the MR, and selects the BWP corresponding to the smallest CO as the target BWP, thereby implementing determination of the target BWP for BWP handover according to the MR, where the target BWP is the most suitable one BWP, and the success rate of LBT is the highest after the UE is handed over to the target BWP.
In addition, the network-side device may also incorporate network-side resource usage when determining the target BWP.
In the method for processing partial uplink bandwidth handover provided by the embodiment of the present invention, the network-side device selects the BWP corresponding to the minimum CO as the target BWP, so that the success rate of LBT is the highest after the UE is handed over to the target BWP.
Based on any of the above embodiments, fig. 2 is a schematic diagram of a partial uplink bandwidth switching processing method according to another embodiment of the present invention, and as shown in fig. 2, an embodiment of the present invention provides a partial uplink bandwidth switching processing method, an execution subject of which is a mobile terminal, for example, a mobile phone, and the method includes:
step S201, sending a measurement report to a network side device, where the measurement report includes channel parameters corresponding to a plurality of bandwidth portions BWP configured for the mobile terminal by the network side device.
Specifically, the network-side device may configure a plurality of BWPs for one UE, and the network-side device may configure the UE to perform measurement for the BWPs, where the UE performs measurement before reporting a measurement report periodically each time, acquires channel parameters corresponding to each BWP, and then performs LBT detection, and reports the acquired parameters after the LBT detection is successful. The channel parameter is used to measure the contention level of each BWP, for example, the measurement results of the parameters such as RSSI of the received signal strength indicator, CO of the channel occupancy rate, etc. may be used to measure the contention level of the BWP.
And after acquiring the channel parameters corresponding to each BWP, the UE generates a measurement report, sends the measurement report to the network side equipment through the currently activated BWP, and receives the measurement report sent by the mobile terminal.
Step S202, receiving a BWP handover command sent by the network-side device, where the BWP handover command is sent by the network-side device after determining that the mobile terminal meets a BWP handover first condition according to the channel parameters respectively corresponding to the multiple bandwidth portions BWP; the BWP switch instruction includes identification information corresponding to a target BWP.
Specifically, after receiving the measurement report sent by the mobile terminal, the network-side device determines whether to switch UL BWP for the UE according to the measurement report, and if it is determined that the mobile terminal meets the first BWP switching condition according to the channel parameters corresponding to the bandwidth portions BWP, the network-side device determines to authorize the UE to switch BWP, and sends a BWP switching instruction to the mobile terminal, for example, an RRC reconfiguration message may be used as the BWP switching instruction. The BWP switch instruction includes identification information corresponding to the target BWP.
The mobile terminal receives the BWP handover command sent by the network-side device.
Step S203, performing BWP handover according to the identification information corresponding to the target BWP.
Specifically, after receiving a BWP handover command sent by a network-side device, the mobile terminal parses identification information corresponding to a target BWP from the BWP, performs BWP handover according to the identification information corresponding to the target BWP, and switches from the currently activated BWP to the target BWP.
The method for processing partial handover of uplink bandwidth provided in the embodiment of the present invention periodically reports the MR through the UE, and then the network side device determines whether the UE needs BWP handover according to the MR, which is beneficial to switching the UE to the BWP with small contention in advance before the uplink LBT failure, thereby avoiding the situation that the UE cannot send data all the time due to LBT failure, thereby reducing the time delay of data transmission and improving the system performance.
Based on any of the above embodiments, further, the channel parameters respectively corresponding to the bandwidth portions BWP are specifically channel occupancy rates CO respectively corresponding to the bandwidth portions BWP.
Specifically, before reporting a measurement report periodically each time, the UE performs measurement to obtain channel parameters corresponding to each BWP, and then performs LBT detection, and reports the obtained parameters after the LBT detection is successful. The channel parameter is used for measuring the competition degree of each BWP, and the embodiment of the invention adopts the channel occupancy CO as the channel parameter corresponding to the BWP and measures the competition degree of the BWP by the channel occupancy CO.
The uplink bandwidth partial switching processing method provided by the embodiment of the present invention uses the channel occupancy CO as a channel parameter corresponding to the BWP, and is used to measure the contention level of the BWP, so that the network side device can accurately know the channel state of each BWP, and is favorable to correctly determine whether the UE needs to switch the BWP.
Based on any one of the above embodiments, further, the BWP switching first condition includes:
and comparing the CO corresponding to the currently activated BWP of the mobile terminal with a first preset threshold, and if the CO corresponding to the currently activated BWP of the mobile terminal is greater than the first preset threshold, determining that the mobile terminal meets a first BWP switching condition.
Specifically, after receiving the measurement report, the network side device parses, from the measurement report, the channel occupancy CO corresponding to the bandwidth segment BWP currently activated by the UE.
Then, the CO of the BWP currently activated by the UE is compared with the size of the first preset threshold Thresh 1. If the CO of the BWP currently activated by the UE is greater than Thresh1, the UE needs to perform BWP switching, and if the CO of the BWP currently activated by the UE is less than or equal to Thresh1, the UE does not need to perform BWP switching.
Wherein, Thresh1 is a preset threshold, and the specific value can be configured according to actual needs.
The uplink bandwidth part switching processing method provided by the embodiment of the invention is beneficial to correctly determining whether the UE needs to switch the BWP or not by comparing the channel occupancy CO of the currently activated BWP with the first preset threshold value.
Based on any of the above embodiments, further, the BWP switching instruction further includes a second preset threshold;
correspondingly, performing BWP handover according to the identification information corresponding to the target BWP specifically includes:
and if the CO of the currently activated BWP is judged and known to be larger than the second preset threshold, carrying out BWP switching according to the identification information corresponding to the target BWP.
Specifically, the BWP handover command sent by the network-side device to the terminal further includes a second preset threshold Thresh 2. Wherein the second preset threshold Thresh2 is greater than the first preset threshold Thresh 1.
After resolving the BWP handover condition and the target BWP identifier from the BWP handover command, the UE continuously detects the wireless environment and determines whether the CO of the currently activated BWP is greater than a second preset threshold Thresh 2.
When the CO of the currently activated BWP of the UE is greater than Thresh2 and the BWP handover condition is satisfied, BWP handover may be performed and the UE may handover to the target BWP.
When the CO of the BWP currently activated by the UE is less than or equal to Thresh2, the BWP switching condition is not satisfied, and the BWP switching is not executed.
The method for processing partial switching of uplink bandwidth provided in the embodiment of the present invention sets the second preset threshold Thresh2 in the BWP switching instruction issued to the UE, so that the terminal performs switching when the CO of the currently activated BWP is greater than Thresh2, which not only ensures that the terminal does not have LBT failure, but also avoids repeatedly performing BWP switching.
Based on any embodiment, further, the method further includes:
sending a scheduling request SR to the network side equipment and receiving an uplink authorization issued by the network side equipment;
and sending RRC reconfiguration completion information to the network side equipment, wherein the RRC reconfiguration completion information comprises BWP switching completion information.
Specifically, after the terminal executes the BWP handover, the terminal executes LBT detection on the new BWP, and after the LBT is successful, the terminal sends a scheduling request SR to the network side device to request the uplink resource.
And the network side equipment issues an uplink grant (UL grant) to the mobile terminal according to the Scheduling Request (SR) reported by the mobile terminal.
And after receiving the UL grant sent by the network side equipment, the mobile terminal sends an RRC reconfiguration complete message to the network side equipment, wherein the message comprises BWP switching complete information.
According to the method for processing partial switching of the uplink bandwidth provided by the embodiment of the invention, after the network side device issues the BWP switching instruction to the terminal, the network side device receives the RRC reconfiguration completion message sent by the mobile terminal, so that whether the terminal successfully performs BWP switching or not can be known in time.
Based on any of the above embodiments, fig. 3 is a schematic diagram of signaling interaction in a partial uplink bandwidth switching process provided by the embodiment of the present invention, and as shown in fig. 3, the embodiment of the present invention provides a technical scheme for switching UL BWP in advance based on RSSI and CO measurement report, which includes the following specific flows:
1. UE reports RSSI and CO measurement results to network side equipment
The network side device may configure a plurality of BWPs for one UE, and the network side device may configure the UE to measure for the plurality of BWPs, where the UE performs LBT detection before reporting each period, and after the LBT detection is successful:
(1) and reporting the RSSI and CO measurement result of each BWP to network side equipment through a measurement report message.
2. If the network side device decides to switch UL BWP, the RRC reconfiguration message carries a BWP conditional switch cell and is sent to the UE
The network side equipment decides whether to switch BWP for the UE based on the measurement result, if the RSSI and CO measurement results of the BWP currently activated by the UE are respectively greater than a threshold value 1(Thresh1) and a threshold value 2(Thresh2), the network side equipment decides to authorize the UE to switch BWP, a BWP conditional switch cell is carried in the RRC reconfiguration message, LBT detection is required before the BWP conditional switch cell is sent to the UE, and after the LBT detection is successful:
(2) the network side equipment sends the BWP conditional switch information element to the UE through the RRC reconfiguration message.
The BWP conditional switch cell includes: and the UE switches the BWP condition and switches to the target BWP ID.
The conditions for switching BWP by UE are as follows: the RSSI and CO measurements are greater than a threshold value of 1 '(Thresh 1') and a threshold value of 2 '(Thresh 2'), respectively, where Thresh1 '> Thresh1, Thresh 2' > Thresh 2;
target BWP ID switched to: and the network sets a target BWP ID according to the reported RSSI and CO measurement results of the BWP and the use condition of the network side resources.
3. When the conditions are met, the UE switches UL BWP, carries a BWP switching completion information element in an RRC reconfiguration completion message and sends the BWP switching completion information element to the network
UE receives the conditional switch cell of the network side equipment and detects whether the switching condition is satisfied, when the BWP switch cell configured by the network side is satisfied, the UE switches to the target BWP ID, LBT detection is executed on the new BWP, and after the LBT detection is successful:
(3) the UE sends an SR to the network on the new UL BWP.
(4) And after receiving the SR, the network executes LBT detection, and sends uplink authorization to the UE after the LBT detection is successful.
(5) And when the UE receives the uplink authorization, the LBT detection is executed, the LBT detection is successful, and the UE sends an RRC reconfiguration completion message to the network, wherein the message comprises a BWP switching completion cell.
Based on any of the above embodiments, fig. 4 is a schematic diagram of a network side device provided in an embodiment of the present invention, and as shown in fig. 4, an embodiment of the present invention provides a network side device, which includes a first receiving module 401 and a first sending module 402, where:
a first receiving module 401 is configured to receive a measurement report sent by a mobile terminal, where the measurement report includes channel parameters respectively corresponding to multiple bandwidth portions BWP configured by a network-side device for the mobile terminal; the first sending module 402 is configured to send a BWP handover instruction to the mobile terminal if it is determined that the mobile terminal meets a first BWP handover condition according to the channel parameters corresponding to the bandwidth portions BWP, where the BWP handover instruction includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
Specifically, the network-side device may configure a plurality of BWPs for one UE, and the network-side device may configure the UE to perform measurement for the BWPs, where the UE performs measurement before reporting a measurement report periodically each time, acquires channel parameters corresponding to each BWP, and then performs LBT detection, and reports the acquired parameters after the LBT detection is successful.
After acquiring the channel parameters corresponding to each BWP, the UE generates a measurement report, and sends the measurement report to the network side device through the currently activated BWP, and the network side device receives the measurement report sent by the mobile terminal through the first receiving module 401.
After receiving the measurement report sent by the mobile terminal, the network side device determines whether to switch UL BWP for the UE according to the measurement report, and if it is determined that the mobile terminal meets the first BWP switching condition according to the channel parameters corresponding to the bandwidth portions BWP, the network side device determines to authorize the UE to switch BWP.
The network side device determines that the UE is authorized to switch the BWP, performs LBT detection, and after LBT succeeds, issues a BWP switching instruction to the UE through the first sending module 402, where the BWP switching instruction includes identification information corresponding to a target BWP.
The network side device provided by the embodiment of the invention periodically reports the MR through the UE, and then determines whether the UE needs to perform BWP switching according to the MR, so that the UE is switched to the BWP with small competition in advance before the uplink LBT fails, and the condition that the UE cannot send data all the time due to the LBT failure is avoided, thereby reducing the time delay of data sending and improving the system performance.
Based on any of the above embodiments, fig. 5 is a schematic diagram of a mobile terminal provided in an embodiment of the present invention, and as shown in fig. 5, an embodiment of the present invention provides a mobile terminal, which includes a second sending module 501, a second receiving module 502, and a switching module 503, where:
the second sending module 501 is configured to send a measurement report to a network-side device, where the measurement report includes channel parameters respectively corresponding to multiple bandwidth portions BWP configured by the network-side device for a mobile terminal; the second receiving module 502 is configured to receive a BWP handover instruction sent by the network-side device, where the BWP handover instruction is sent by the network-side device after determining that the mobile terminal meets a BWP handover first condition according to channel parameters respectively corresponding to the multiple bandwidth portions BWP; the BWP switching instruction comprises identification information corresponding to a target BWP; the switching module 503 is configured to perform BWP switching according to the identification information corresponding to the target BWP.
Specifically, after acquiring the channel parameters corresponding to each BWP, the UE generates a measurement report, and sends the measurement report to the network side device through the second sending module 501 by using the currently activated BWP, and receives the measurement report sent by the mobile terminal.
After receiving the measurement report sent by the mobile terminal, the network side device determines whether to switch UL BWP for the UE according to the measurement report, and if it is determined that the mobile terminal meets the first BWP switching condition according to the channel parameters corresponding to the bandwidth portions BWP, the network side device determines to authorize the UE to switch BWP, and sends a BWP switching instruction to the mobile terminal.
The mobile terminal receives the BWP handover command sent by the network-side device through the second receiving module 502.
After receiving the BWP handover command sent by the network-side device, the mobile terminal parses the identification information corresponding to the target BWP, and performs BWP handover according to the identification information corresponding to the target BWP through the handover module 503, so as to handover from the currently activated BWP to the target BWP.
The mobile terminal provided by the embodiment of the invention periodically reports the MR through the UE, and then the network side equipment determines whether the UE needs to perform BWP switching according to the MR, so that the UE is switched to the BWP with small competition in advance before the failure of the uplink LBT, and the condition that the UE cannot send data all the time due to the failure of the LBT is avoided, thereby reducing the time delay of data sending and improving the system performance.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 6, the electronic device includes: a processor (processor)601, a memory (memory)602, a bus 603, and computer programs stored on the memory and executable on the processor.
Wherein, the processor 601 and the memory 602 complete the communication with each other through the bus 603;
the processor 601 is configured to call and execute the computer program in the memory 602 to perform the steps in the above method embodiments, including:
receiving a measurement report sent by a mobile terminal, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for the mobile terminal by a network side device; if the mobile terminal is judged to meet the first BWP handover condition according to the channel parameters corresponding to the bandwidth portions BWP, sending a BWP handover command to the mobile terminal, where the BWP handover command includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
Or comprises the following steps:
sending a measurement report to a network side device, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for a mobile terminal by the network side device; receiving a BWP handover command sent by the network-side device, where the BWP handover command is sent by the network-side device after determining that the mobile terminal meets a BWP handover first condition according to channel parameters corresponding to the multiple bandwidth portions BWP, respectively; the BWP switching instruction comprises identification information corresponding to a target BWP; and performing BWP switching according to the identification information corresponding to the target BWP.
In addition, the logic instructions in the memory may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes 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 steps of the method according to 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 Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present invention provide a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the steps of the above-described method embodiments, for example, including:
receiving a measurement report sent by a mobile terminal, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for the mobile terminal by a network side device; if the mobile terminal is judged to meet the first BWP handover condition according to the channel parameters corresponding to the bandwidth portions BWP, sending a BWP handover command to the mobile terminal, where the BWP handover command includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
Or comprises the following steps:
sending a measurement report to a network side device, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for a mobile terminal by the network side device; receiving a BWP handover command sent by the network-side device, where the BWP handover command is sent by the network-side device after determining that the mobile terminal meets a BWP handover first condition according to channel parameters corresponding to the multiple bandwidth portions BWP, respectively; the BWP switching instruction comprises identification information corresponding to a target BWP; and performing BWP switching according to the identification information corresponding to the target BWP.
An embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the steps in the above method embodiments, for example, including:
receiving a measurement report sent by a mobile terminal, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for the mobile terminal by a network side device; if the mobile terminal is judged to meet the first BWP handover condition according to the channel parameters corresponding to the bandwidth portions BWP, sending a BWP handover command to the mobile terminal, where the BWP handover command includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
Or comprises the following steps:
sending a measurement report to a network side device, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for a mobile terminal by the network side device; receiving a BWP handover command sent by the network-side device, where the BWP handover command is sent by the network-side device after determining that the mobile terminal meets a BWP handover first condition according to channel parameters corresponding to the multiple bandwidth portions BWP, respectively; the BWP switching instruction comprises identification information corresponding to a target BWP; and performing BWP switching according to the identification information corresponding to the target BWP.
The above-described embodiments of the apparatuses and devices are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (15)

1. A method for processing partial switch of uplink bandwidth is characterized by comprising the following steps:
receiving a measurement report sent by a mobile terminal, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for the mobile terminal by a network side device;
if the mobile terminal is judged to meet the first BWP handover condition according to the channel parameters corresponding to the bandwidth portions BWP, sending a BWP handover command to the mobile terminal, where the BWP handover command includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
2. The method according to claim 1, wherein the channel parameters respectively corresponding to the plurality of bandwidth parts BWP are channel occupancy rates CO respectively corresponding to the bandwidth parts BWP.
3. The upstream bandwidth partial switching processing method according to claim 2, wherein the BWP switching the first condition comprises:
and comparing the CO corresponding to the currently activated BWP of the mobile terminal with a first preset threshold, and if the CO corresponding to the currently activated BWP of the mobile terminal is greater than the first preset threshold, determining that the mobile terminal meets a first BWP switching condition.
4. The upstream bandwidth partial switching processing method according to claim 3, wherein the BWP switching command further includes a second preset threshold;
correspondingly, the specifically step of performing BWP handover by the mobile terminal according to the identification information corresponding to the target BWP is:
and if the mobile terminal judges that the CO of the currently activated BWP is larger than the second preset threshold, performing BWP switching according to the identification information corresponding to the target BWP.
5. The method of claim 1, further comprising:
issuing uplink authorization to the mobile terminal according to the scheduling request SR reported by the mobile terminal;
and receiving RRC reconfiguration completion information sent by the mobile terminal, wherein the RRC reconfiguration completion information comprises BWP switching completion information.
6. The upstream bandwidth partial switching processing method according to claim 2, wherein the target BWP is determined according to the following steps:
and resolving the CO corresponding to each BWP from the measurement report, and selecting the BWP corresponding to the minimum CO as the target BWP.
7. A method for processing partial switch of uplink bandwidth is characterized by comprising the following steps:
sending a measurement report to a network side device, wherein the measurement report comprises channel parameters respectively corresponding to a plurality of bandwidth parts BWP configured for a mobile terminal by the network side device;
receiving a BWP handover command sent by the network-side device, where the BWP handover command is sent by the network-side device after determining that the mobile terminal meets a BWP handover first condition according to channel parameters corresponding to the multiple bandwidth portions BWP, respectively; the BWP switching instruction comprises identification information corresponding to a target BWP;
and performing BWP switching according to the identification information corresponding to the target BWP.
8. The method according to claim 7, wherein the channel parameters respectively corresponding to the bandwidth portions BWP are channel occupancy rates CO respectively corresponding to the bandwidth portions BWP.
9. The upstream bandwidth partial switching processing method according to claim 8, wherein the BWP switching the first condition comprises:
and comparing the CO corresponding to the currently activated BWP of the mobile terminal with a first preset threshold, and if the CO corresponding to the currently activated BWP of the mobile terminal is greater than the first preset threshold, determining that the mobile terminal meets a first BWP switching condition.
10. The upstream bandwidth partial switching processing method according to claim 9, wherein the BWP switching command further includes a second preset threshold;
correspondingly, performing BWP handover according to the identification information corresponding to the target BWP specifically includes:
and if the CO of the currently activated BWP is judged and known to be larger than the second preset threshold, carrying out BWP switching according to the identification information corresponding to the target BWP.
11. The method of claim 7, further comprising:
sending a scheduling request SR to the network side equipment and receiving an uplink authorization issued by the network side equipment;
and sending RRC reconfiguration completion information to the network side equipment, wherein the RRC reconfiguration completion information comprises BWP switching completion information.
12. A network-side device, comprising:
a first receiving module, configured to receive a measurement report sent by a mobile terminal, where the measurement report includes channel parameters respectively corresponding to multiple bandwidth portions BWP configured by a network-side device for the mobile terminal;
a first sending module, configured to send a BWP handover instruction to the mobile terminal if it is determined that the mobile terminal meets a first BWP handover condition according to the channel parameters corresponding to the multiple bandwidth portions BWP, where the BWP handover instruction includes identification information corresponding to a target BWP, so that the mobile terminal performs BWP handover according to the identification information corresponding to the target BWP.
13. A mobile terminal, comprising:
a second sending module, configured to send a measurement report to a network-side device, where the measurement report includes channel parameters corresponding to multiple bandwidth portions BWP configured for a mobile terminal by the network-side device;
a second receiving module, configured to receive a BWP handover instruction sent by the network-side device, where the BWP handover instruction is sent by the network-side device after determining that the mobile terminal meets a BWP handover first condition according to channel parameters respectively corresponding to the multiple bandwidth portions BWP; the BWP switching instruction comprises identification information corresponding to a target BWP;
and the switching module is used for carrying out BWP switching according to the identification information corresponding to the target BWP.
14. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method for processing upstream bandwidth portion switching according to any one of claims 1 to 11 when executing the computer program.
15. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the steps of the method for processing partial handover of upstream bandwidth as recited in any one of claims 1 to 11.
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