CN114070496A - Uplink transmission method and device for carrier aggregation and base station - Google Patents

Uplink transmission method and device for carrier aggregation and base station Download PDF

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Publication number
CN114070496A
CN114070496A CN202010743277.9A CN202010743277A CN114070496A CN 114070496 A CN114070496 A CN 114070496A CN 202010743277 A CN202010743277 A CN 202010743277A CN 114070496 A CN114070496 A CN 114070496A
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carrier
channel quality
uplink
auxiliary carrier
uplink channel
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Chinese (zh)
Inventor
周俊
武绍涛
侯海兵
申新乐
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ZTE Corp
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ZTE Corp
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Priority to CN202010743277.9A priority Critical patent/CN114070496A/en
Priority to PCT/CN2021/107546 priority patent/WO2022022352A1/en
Publication of CN114070496A publication Critical patent/CN114070496A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Abstract

The embodiment of the invention discloses an uplink transmission method, an uplink transmission device and a base station for carrier aggregation. In the uplink transmission method for carrier aggregation, an uplink carrier includes a primary carrier and a secondary carrier, and the step executed at the base station side includes: performing uplink channel quality estimation on the auxiliary carrier to obtain estimated uplink channel quality of the auxiliary carrier; determining to execute switching operation based on the estimated uplink channel quality of the auxiliary carrier; determining the auxiliary carrier as an auxiliary carrier to be switched; and triggering the UE to execute the switching operation, switching the original uplink carrier to the auxiliary carrier to be switched for scheduling, and managing the uplink auxiliary carrier of the UE according to the channel quality of the auxiliary carrier, thereby improving the transmission flow of the uplink service of the UE.

Description

Uplink transmission method and device for carrier aggregation and base station
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to an uplink transmission method, an uplink transmission device and a base station for carrier aggregation.
Background
The CA (Carrier Aggregation) technology can meet the requirement of a larger bandwidth, and the CA technology is generally applied to an LTE network and an NR network, in which a plurality of component carriers simultaneously provide a service for a User Equipment (UE), and one of the plurality of component carriers that provide the service for the UE is a main Carrier and the other component carriers are auxiliary carriers. The UE can simultaneously transmit data on a plurality of carriers, thereby improving the data transmission rate.
With the development of network technology and the appearance of a large number of video services, the uplink service requirement of the UE is increased. In the CA technology, the channel quality of the primary carrier and the secondary carrier and the channel quality of different secondary carriers may be greatly different according to the different locations of the uplink carriers of the UE. The situation that the channel quality of the secondary carrier of the UE is significantly better than that of the primary carrier may occur, and the UE still performs uplink service transmission on the primary carrier, which affects the uplink service transmission of the UE and further affects the service experience of the user. Therefore, how to manage the UE uplink secondary carrier according to the channel quality of the secondary carrier and improve the UE uplink service transmission flow becomes an urgent problem to be solved.
Disclosure of Invention
One or more embodiments of the present disclosure provide an uplink transmission method, an apparatus, and a base station for carrier aggregation, which can manage a UE uplink secondary carrier according to channel quality of the secondary carrier, and improve UE uplink service transmission traffic.
To solve the above technical problem, one or more embodiments of the present specification are implemented as follows:
in a first aspect, an uplink transmission method for carrier aggregation is provided, where an uplink carrier includes a primary carrier and a secondary carrier, and the step performed at a base station side includes: performing uplink channel quality estimation on the auxiliary carrier to obtain estimated uplink channel quality of the auxiliary carrier; determining to execute switching operation based on the estimated uplink channel quality of the auxiliary carrier; determining the auxiliary carrier as an auxiliary carrier to be switched; and triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling.
In a second aspect, an uplink transmission method for carrier aggregation is provided, where an uplink carrier includes a primary carrier and a secondary carrier, and the step performed at the UE side includes: and determining a trigger signal sent after executing the switching operation based on the pre-estimated uplink channel quality of the auxiliary carrier after pre-estimating the uplink channel quality of the auxiliary carrier according to the base station, executing the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling, wherein the trigger signal comprises the auxiliary carrier to be switched.
In a third aspect, an uplink transmission apparatus for carrier aggregation is provided, where an uplink carrier includes a primary carrier and a secondary carrier and is disposed on a base station side, and the apparatus includes: the estimation module is used for estimating the uplink channel quality of the auxiliary carrier to obtain the estimated uplink channel quality of the auxiliary carrier; a switching determining module, configured to determine to execute a switching operation based on the estimated uplink channel quality of the secondary carrier; the auxiliary carrier determining module is used for determining the auxiliary carrier to be switched; and the triggering module is used for triggering the UE to execute the switching operation and switching the original uplink carrier to the auxiliary carrier to be switched for scheduling.
In a fourth aspect, an uplink transmission apparatus for carrier aggregation is provided, where an uplink carrier includes a primary carrier and a secondary carrier and is disposed on a UE side, and the apparatus includes: and the switching module is used for determining a trigger signal sent after the switching operation is executed based on the pre-estimated uplink channel quality of the auxiliary carrier after the uplink channel quality of the auxiliary carrier is pre-estimated by the base station, executing the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling, wherein the trigger signal comprises the auxiliary carrier to be switched.
In a fifth aspect, a base station is proposed, which includes the uplink transmission apparatus for carrier aggregation as described above.
In a sixth aspect, a user equipment is proposed, which includes the uplink transmission apparatus for carrier aggregation as described above.
In a seventh aspect, a storage medium for a computer-readable storage is proposed, where one or more programs are stored, and when executed by one or more processors, implement the steps of the uplink transmission method for carrier aggregation as described above.
As can be seen from the technical solutions provided in one or more embodiments of the present disclosure, the uplink transmission method for carrier aggregation according to the embodiments of the present disclosure performs uplink channel quality estimation on an auxiliary carrier in an uplink auxiliary carrier at a base station side, and determines whether to perform a handover operation based on the estimated uplink channel quality of the auxiliary carrier after obtaining the estimated uplink channel quality of the auxiliary carrier. And if the switching operation is determined to be executed, determining the auxiliary carrier as the auxiliary carrier to be switched, triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling. The UE is actively switched to the auxiliary carrier with better channel quality to better perform uplink scheduling, and the uplink flow of the UE in the carrier aggregation of the existing network can be improved. Particularly, for the case that the UE cannot directly obtain the uplink channel quality of the auxiliary carrier, the uplink transmission method for carrier aggregation, provided by the embodiment of the present invention, may be used to trigger the UE to actively perform the handover operation for the case that it is determined to perform the handover operation after the base station side completes the uplink channel quality estimation for the auxiliary carrier in the uplink auxiliary carrier, so as to reduce the throughput of the UE, improve the uplink traffic of the UE, and facilitate the uplink service experience of the user.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, reference will now be made briefly to the attached drawings, which are needed in the description of one or more embodiments or prior art, and it should be apparent that the drawings in the description below are only some of the embodiments described in the specification, and that other drawings may be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a schematic diagram of steps of an uplink transmission method for carrier aggregation according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of steps of an uplink transmission method for carrier aggregation according to another embodiment of the present invention.
Fig. 3 is a schematic diagram of steps of an uplink transmission method for carrier aggregation according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of steps of an uplink transmission method for carrier aggregation according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of an uplink transmission apparatus for carrier aggregation according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of an uplink transmission apparatus for carrier aggregation according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions in the present specification better understood, the technical solutions in one or more embodiments of the present specification will be clearly and completely described below with reference to the accompanying drawings in one or more embodiments of the present specification, and it is obvious that the one or more embodiments described are only a part of the embodiments of the present specification, and not all embodiments. All other embodiments that can be derived by a person skilled in the art from one or more of the embodiments described herein without making any inventive step shall fall within the scope of protection of this document.
The uplink transmission method for carrier aggregation provided by the embodiment of the invention is suitable for the carrier aggregation technology, and can trigger the UE to be directly switched to the auxiliary carrier with better uplink channel quality for better scheduling after the uplink channel quality of the uplink auxiliary carrier of the UE is pre-estimated at the base station side, so that the uplink flow of the UE is improved. The uplink transmission method for carrier aggregation and the steps thereof provided in this specification will be described in detail below.
It should be noted that the uplink transmission method for carrier aggregation provided in the embodiment of the present invention may be applied to an LTE network and an NR network, which is not limited herein.
Example one
Referring to fig. 1, a schematic step diagram of an uplink transmission method for carrier aggregation according to an embodiment of the present invention is shown. It can be understood that, in the uplink transmission method for carrier aggregation provided in the embodiment of the present invention, the uplink carrier includes a primary carrier and a secondary carrier, the UE uplink transmission may be scheduled on the primary carrier and the secondary carrier at the same time, and the uplink transmission method for carrier aggregation is performed at the base station side, so that the processing amount at the UE side is reduced. The uplink transmission method for carrier aggregation comprises the following steps:
step 10: performing uplink channel quality estimation on the auxiliary carrier to obtain the estimated uplink channel quality of the auxiliary carrier;
and performing channel quality estimation on the auxiliary carrier at the base station side to obtain the estimated uplink channel quality of the auxiliary carrier, so as to judge whether a switching operation needs to be executed or not based on the estimated uplink channel quality of the auxiliary carrier, wherein the judging step is also executed at the base station side. The uplink transmission method for carrier aggregation provided by the embodiment of the invention can be used for reducing the processing amount of the UE side when the base station side executes the method, and particularly for the current situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier, when the auxiliary carrier with better uplink channel quality is judged to exist, the UE is triggered to be directly switched to the auxiliary carrier with better uplink channel quality for scheduling, so that the uplink transmission flow of the UE can be improved, and the service experience of the UE can be improved. Therefore, the embodiment of the invention aims to ensure that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling when the auxiliary carrier with better uplink channel quality is determined to exist by estimating the uplink channel quality of the uplink auxiliary carrier of the UE, thereby improving the uplink flow of the UE in carrier aggregation of an LTE network or an NR existing network.
An example of performing, on a communication protocol layer of a base station, an uplink transmission method for carrier aggregation according to an embodiment of the present invention may be: after adding the auxiliary carrier, the control surface layer of the base station sends an indication of the uplink channel quality estimation of the auxiliary carrier to a scheduler which also belongs to the base station side; the scheduler performs uplink channel quality prediction on each auxiliary carrier after receiving the indication, wherein the uplink channel quality prediction is performed on each auxiliary carrier, and the subsequent UE performs switching operation and also performs switching among each auxiliary carrier.
Step 20: determining to execute switching operation based on the pre-estimated uplink channel quality of the auxiliary carrier;
and after the estimated uplink channel quality of the auxiliary carrier is obtained, determining whether to execute switching operation or not based on the estimated uplink channel quality of the auxiliary carrier, and ending the uplink transmission method when the switching operation is determined not to be executed. And determining the auxiliary carrier to be switched when the switching operation is determined to be executed. The principle of determining to execute the switching operation based on the pre-estimated uplink channel quality of the secondary carrier may be whether the pre-estimated uplink channel quality of the secondary carrier is greater than a preset value, where the preset value may be set according to the uplink transmission quality of the secondary carrier, and the uplink transmission quality of the secondary carrier is better when the pre-estimated uplink channel quality of the secondary carrier is greater than the preset value.
Step 30: determining the auxiliary carrier as the auxiliary carrier to be switched;
and determining that the switching operation can be executed based on the pre-estimated uplink channel quality of the auxiliary carrier so that the UE can be switched to the auxiliary carrier with better uplink channel quality, wherein the auxiliary carrier can be used as the auxiliary carrier to be switched. If the secondary carrier with better uplink channel quality of the plurality of secondary carriers appears, the secondary carrier to be switched can be determined according to the setting of the user, for example, the secondary carrier with the best uplink channel quality is determined as the secondary carrier to be switched.
Step 40: and triggering the UE to execute switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling.
And starting the base station to start the UE to execute the switching operation after determining that the switching operation and the auxiliary carrier to be switched can be executed, wherein the triggering can be a mode that the base station sends a message to the UE and the like. And the UE executes the switching operation to switch from the original uplink carrier to the auxiliary carrier to be switched for scheduling, and the step of executing the switching operation by the UE is to switch from the original uplink carrier to the auxiliary carrier to be switched.
The uplink transmission method of the embodiment of the invention realizes that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink transmission by estimating the uplink channel quality of the UE auxiliary carrier from the base station side, reduces the processing amount of the UE, and particularly can deal with the situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier in carrier aggregation. And the UE in the carrier aggregation can be actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling, so that the uplink flow of the UE in the carrier aggregation is improved.
Referring to fig. 2, in some embodiments, in the uplink transmission method for carrier aggregation provided in the embodiment of the present invention, step 20: determining to execute switching operation based on the estimated uplink channel quality of the auxiliary carrier, specifically comprising:
step 200: calculating the difference value between the pre-estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of the main carrier;
after the estimated uplink channel quality of the auxiliary carrier is obtained, whether the difference value between the estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of the main carrier is larger than a preset threshold value or not can be judged.
The scheduler at the base station side can calculate the estimated uplink channel quality of the auxiliary carrier and compare the estimated uplink channel quality of the auxiliary carrier with the known uplink channel quality of the main carrier to obtain a difference value, and then judge whether the difference value is greater than a preset threshold value.
Step 210: judging whether the difference value is larger than a preset threshold value or not;
and if a plurality of auxiliary carriers meet the condition, reporting corresponding auxiliary carrier information, such as the information of the auxiliary carrier with the best estimated auxiliary carrier uplink channel quality according to the setting of a user. And the control plane triggers the UE to execute the switching operation after receiving the estimation result of the scheduler.
Step 220: and if the difference value is larger than a preset threshold value, determining to execute the switching operation.
When the difference value of the estimated uplink channel quality of the auxiliary carrier minus the uplink channel quality of the main carrier is larger than a preset threshold value, determining to execute a switching operation, reporting the information of the auxiliary carrier to a control plane by a scheduler, and triggering the UE to execute the switching operation after the control plane layer of the base station receives the estimation result sent by the scheduler so that the UE is actively switched to the auxiliary carrier with better uplink channel quality to perform uplink scheduling.
Referring to fig. 3, in some embodiments, in the uplink transmission method for carrier aggregation provided in the embodiments of the present invention, the number of the secondary carriers is multiple, and if the difference is greater than the preset threshold, step 30: determining the auxiliary carrier to be switched, specifically comprising:
step 300: and if the difference value of one of the auxiliary carriers is greater than other difference values of the auxiliary carriers, selecting one of the auxiliary carriers as the auxiliary carrier to be switched.
If the estimated uplink channel quality of a plurality of auxiliary carriers simultaneously meets the condition, selecting the auxiliary carrier with the best uplink channel quality from the auxiliary carriers as the auxiliary carrier to be switched, and uploading the information of the auxiliary carrier with the best uplink channel quality to the control surface layer. And after receiving the estimation result of the scheduler, the control surface layer triggers the UE to be actively switched to the auxiliary carrier reported by the scheduler for scheduling. By the prediction of the uplink channel quality and the auxiliary carrier switching operation, the UE in the carrier aggregation can be scheduled on the carrier with better channel quality, so that the uplink transmission flow of the UE is improved.
In some embodiments, in the uplink transmission method for carrier aggregation provided in the embodiments of the present invention, step 10: the method for obtaining the pre-estimated uplink channel quality of the auxiliary carrier after performing uplink channel quality pre-estimation on the auxiliary carrier specifically comprises the following steps:
step 100: calculating the difference value delta (i) between the uplink channel quality of the auxiliary carrier and the uplink channel quality of the main carrier by adopting the following formulaSINRComprises the following steps:
Δ(i)SINR＝10log10(fScell(i))-10log10(fPcell)+NIScell(i)-NIPcell+10log10(AntNumScell(i))-10log10(AntNumPcell)
(1)
the estimated uplink channel quality of the auxiliary carrier is as follows:
SINRScell(i)＝SINRPcell+Δ(i)SINR (2)
wherein, the SINRScell(i)For estimated uplink channel quality, SINR of auxiliary carrierPcellFor the uplink channel quality of the primary carrier, Pcell indicates the primary carrierScell (i) denotes a secondary carrier, i is an index of the secondary carrier, fScell(i)，fPcellRespectively the frequency point of the auxiliary carrier wave, the frequency point of the main carrier wave, NIScell(i)，NIPcellInterference information of the auxiliary carrier and interference information of the main carrier, AntNumScell(i)，AntNumPcellThe number of antenna ports of the secondary carrier and the number of antenna ports of the primary carrier are respectively.
The embodiment of the invention can predict the uplink channel quality of the auxiliary carrier according to the interference information of the uplink carrier, the frequency point of the uplink carrier and the number of the antennas of the uplink carrier.
An example is provided below to illustrate specific implementation steps of the uplink transmission method for carrier aggregation according to the embodiment of the present invention.
1. The control surface layer of the base station sends an uplink channel quality estimation indication to a scheduler after adding the auxiliary carriers Scell1 and Scell2 of the UE;
2. after receiving the instruction, the scheduler can estimate the channel quality SINR of the two auxiliary carriers according to the information such as the frequency point of the uplink carrier, the interference information of the uplink carrier, the number of antennas of the uplink carrier and the likeScell1And SINRScell2；
The estimated uplink channel quality of the secondary carrier can be calculated according to the following formula:
SINRScell(i)＝SINRPcell+Δ(i)SINR
wherein, Pcell and Scell (i) respectively represent primary and secondary carriers, i is a secondary carrier index, and i may be 1 or 2:
wherein, Delta (i)SINRCan be calculated from the following formula:
Δ(i)SINR＝10log10(fScell(i))-10log10(fPcell)+NIScell(i)-NIPcell+10log10(AntNumScell(i))-10log10(AntNumPcell)
wherein f isScell(i)，fPcellFrequency points of auxiliary carrier and main carrier, NIScell(i)，NIPcellFor interference information of the secondary carrier and interference information of the primary carrier, AntNumScell(i)，AntNumPcellThe number of antenna ports of the auxiliary carrier and the number of antenna ports of the main carrier;
3. the scheduler of the base station respectively calculates the difference value of the two estimated uplink channel qualities of the auxiliary carrier and the main carrier: delta SINRScell1And Δ SINRScell2When the difference between the two is greater than the threshold, i.e. Δ SINRScell1Greater than Δ SINRThr or Δ SINRScell2If the time is more than delta SINRThr, the auxiliary carrier information is reported to the control surface layer. If both the two auxiliary carriers meet the condition, the 2 auxiliary carriers are sorted from high to low according to the uplink channel quality, and the auxiliary carrier information with the best channel quality is reported to the control surface layer. In the example, if both the two secondary carriers meet the condition, the Scell2 with better channel quality is reported to the control plane.
4. And the control plane of the base station receives the estimation result of the auxiliary carrier, and actively triggers the main and auxiliary switching to ensure that the CA UE is switched from the Pcell to the auxiliary carrier Scell2 reported by the scheduler meeting the conditions to perform uplink scheduling.
As can be seen from the above analysis, the uplink transmission method for carrier aggregation according to the embodiment of the present invention performs uplink channel quality estimation on an auxiliary carrier in an uplink auxiliary carrier at a base station side, and determines whether to perform a handover operation based on the estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of a main carrier after obtaining the estimated uplink channel quality of the auxiliary carrier. And if the switching operation is determined to be executed, determining the auxiliary carrier as the auxiliary carrier to be switched, triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling. The UE is actively switched to the auxiliary carrier with better channel quality to better perform uplink scheduling, and the uplink flow of the UE in the carrier aggregation of the existing network can be improved. Particularly, for the case that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier, the uplink transmission method for the UE uplink auxiliary carrier in carrier aggregation, which is provided by the embodiment of the present invention, can be used to trigger the UE to actively perform the handover operation for the case that the handover operation is determined to be performed after the uplink channel quality of the auxiliary carrier in the uplink auxiliary carrier is estimated at the base station side, so that the throughput of the UE is reduced, the uplink traffic of the UE is improved, and the uplink service experience of the user is facilitated.
Example two
Referring to fig. 4, in an uplink transmission method for carrier aggregation according to an embodiment of the present invention, an uplink carrier includes a primary carrier and a secondary carrier, and the step performed at the UE side includes:
step 60: and determining a trigger signal sent after executing the switching operation based on the pre-estimated uplink channel quality of the auxiliary carrier after pre-estimating the uplink channel quality of the auxiliary carrier according to the base station to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling, wherein the trigger signal comprises the auxiliary carrier to be switched.
And performing channel quality estimation on the auxiliary carrier at the base station side to obtain the estimated uplink channel quality of the auxiliary carrier, so as to judge whether a switching operation needs to be executed or not based on the estimated uplink channel quality of the auxiliary carrier, wherein the judging step is also executed at the base station side. The uplink transmission method for carrier aggregation provided by the embodiment of the invention can be used for reducing the processing amount of the UE side when the base station executes the method, particularly for the current situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier, the base station sends a trigger signal to the UE when judging that the auxiliary carrier with better uplink channel quality exists, and the UE is directly switched to the auxiliary carrier with better uplink channel quality for scheduling, so that the uplink transmission flow of the UE can be improved, and the service experience of the UE can be improved. Therefore, the embodiment of the invention aims to ensure that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling when the auxiliary carrier with better uplink channel quality is determined to exist by estimating the uplink channel quality of the uplink auxiliary carrier of the UE, the follow-up UE performs switching operation to switch among the auxiliary carriers, the UE can perform scheduling on the auxiliary carrier with better uplink channel quality, and the uplink flow of the UE in carrier aggregation of an LTE network or an NR existing network is improved.
As can be seen from the above analysis, the uplink transmission method for carrier aggregation according to the embodiment of the present invention performs uplink channel quality estimation on an auxiliary carrier in an uplink auxiliary carrier at a base station side, and determines whether to perform a handover operation based on the estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of a main carrier after obtaining the estimated uplink channel quality of the auxiliary carrier. And if the switching operation is determined to be executed, determining the auxiliary carrier as the auxiliary carrier to be switched, triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling. The UE is actively switched to the auxiliary carrier with better channel quality to better perform uplink scheduling, and the uplink flow of the UE in the carrier aggregation of the existing network can be improved. Particularly, for the case that the UE cannot directly obtain the uplink channel quality of the auxiliary carrier, the uplink transmission method for carrier aggregation, provided by the embodiment of the present invention, may be used to trigger the UE to actively perform the handover operation for the case that it is determined to perform the handover operation after the base station side completes the uplink channel quality estimation for the auxiliary carrier in the uplink auxiliary carrier, so as to reduce the throughput of the UE, improve the uplink traffic of the UE, and facilitate the uplink service experience of the user.
EXAMPLE III
Referring to fig. 5, in order to provide an uplink transmission device for carrier aggregation according to an embodiment of the present invention, the uplink transmission device is disposed at a base station side, and an uplink carrier includes a primary carrier and a secondary carrier. The uplink transmission apparatus 10 for an uplink secondary carrier in carrier aggregation includes: pre-estimation module 100, handover determination module 110, secondary carrier determination module 120, and trigger module 130. Wherein:
the estimation module 100 is configured to perform uplink channel quality estimation on the auxiliary carrier to obtain estimated uplink channel quality of the auxiliary carrier;
and performing channel quality estimation on the auxiliary carrier at the base station side to obtain the estimated uplink channel quality of the auxiliary carrier, so as to judge whether a switching operation needs to be executed or not based on the estimated uplink channel quality of the auxiliary carrier, wherein the judging step is also executed at the base station side. The uplink transmission method for the uplink auxiliary carrier of the UE in the carrier aggregation provided by the embodiment of the invention can be used for reducing the processing amount of the UE side when the base station side executes the uplink transmission method, particularly for the current situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier, and triggering the UE to be directly switched to the auxiliary carrier with better uplink channel quality for scheduling when the auxiliary carrier with better uplink channel quality is judged to exist, so that the uplink transmission flow of the UE can be improved, and the service experience of the UE can be improved. Therefore, the embodiment of the invention aims to ensure that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling when the auxiliary carrier with better uplink channel quality is determined to exist by estimating the uplink channel quality of the uplink auxiliary carrier of the UE, thereby improving the uplink flow of the UE in carrier aggregation of an LTE network or an NR existing network.
An example of performing, on a communication protocol layer of a base station, an uplink transmission method for carrier aggregation according to an embodiment of the present invention may be: after adding the auxiliary carrier, the control surface layer of the base station sends an indication of the uplink channel quality estimation of the auxiliary carrier to a scheduler which also belongs to the base station side; the scheduler performs uplink channel quality prediction on each auxiliary carrier after receiving the indication, wherein the uplink channel quality prediction is performed on each auxiliary carrier, and the subsequent UE performs switching operation and also performs switching among each auxiliary carrier.
A switching determining module 110, configured to determine to execute a switching operation based on the estimated uplink channel quality of the secondary carrier;
and after the estimated uplink channel quality of the auxiliary carrier is obtained, determining whether to execute switching operation or not based on the estimated uplink channel quality of the auxiliary carrier, and ending the uplink transmission method when the switching operation is determined not to be executed. And determining the auxiliary carrier to be switched when the switching operation is determined to be executed. The principle of determining to execute the switching operation based on the pre-estimated uplink channel quality of the secondary carrier may be whether the pre-estimated uplink channel quality of the secondary carrier is greater than a preset value, where the preset value may be set according to the uplink transmission quality of the secondary carrier, and the uplink transmission quality of the secondary carrier is better when the pre-estimated uplink channel quality of the secondary carrier is greater than the preset value.
An auxiliary carrier determining module 120, configured to determine an auxiliary carrier as an auxiliary carrier to be switched;
and determining that the switching operation can be executed based on the pre-estimated uplink channel quality of the auxiliary carrier so that the UE can be switched to the auxiliary carrier with better uplink channel quality, wherein the auxiliary carrier can be used as the auxiliary carrier to be switched. If the secondary carrier with better uplink channel quality of the plurality of secondary carriers appears, the secondary carrier to be switched can be determined according to the setting of the user, for example, the secondary carrier with the best uplink channel quality is determined as the secondary carrier to be switched.
And a triggering module 130, configured to trigger the UE to perform a switching operation, and switch from an original uplink carrier to an auxiliary carrier to be switched for scheduling.
And starting the base station to start the UE to execute the switching operation after determining that the switching operation and the auxiliary carrier to be switched can be executed, wherein the triggering can be a mode that the base station sends a message to the UE and the like. And the UE executes the switching operation to switch from the original uplink carrier to the auxiliary carrier to be switched for scheduling, and the step of executing the switching operation by the UE is to switch from the original uplink carrier to the auxiliary carrier to be switched.
The uplink transmission method of the embodiment of the invention realizes that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink transmission by estimating the uplink channel quality of the UE auxiliary carrier from the base station side, reduces the processing amount of the UE, and particularly can deal with the situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier in carrier aggregation. And the UE in the carrier aggregation can be actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling, so that the uplink flow of the UE in the carrier aggregation is improved.
In some embodiments, in order to provide an uplink transmission apparatus for carrier aggregation according to an embodiment of the present invention, the handover determining module 110 is specifically configured to:
calculating the difference value between the pre-estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of the main carrier;
after the estimated uplink channel quality of the auxiliary carrier is obtained, whether the difference value between the estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of the main carrier is larger than a preset threshold value or not can be judged.
The scheduler at the base station side can calculate the estimated uplink channel quality of the auxiliary carrier and compare the estimated uplink channel quality of the auxiliary carrier with the known uplink channel quality of the main carrier to obtain a difference value, and then judge whether the difference value is greater than a preset threshold value.
Judging whether the difference value is larger than a preset threshold value or not;
and if a plurality of auxiliary carriers meet the condition, reporting corresponding auxiliary carrier information, such as the information of the auxiliary carrier with the best estimated auxiliary carrier uplink channel quality according to the setting of a user. And the control plane triggers the UE to execute the switching operation after receiving the estimation result of the scheduler.
And if the difference value is larger than a preset threshold value, determining to execute the switching operation.
Step 220: and if the difference value is larger than a preset threshold value, determining to execute the switching operation.
When the difference value of the estimated uplink channel quality of the auxiliary carrier minus the uplink channel quality of the main carrier is larger than a preset threshold value, determining to execute a switching operation, reporting the information of the auxiliary carrier to a control plane by a scheduler, and triggering the UE to execute the switching operation after the control plane layer of the base station receives the estimation result sent by the scheduler so that the UE is actively switched to the auxiliary carrier with better uplink channel quality to perform uplink scheduling.
As can be seen from the above analysis, the uplink transmission method for carrier aggregation according to the embodiment of the present invention performs uplink channel quality estimation on an auxiliary carrier in an uplink auxiliary carrier at a base station side, and determines whether to perform a handover operation based on the estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of a main carrier after obtaining the estimated uplink channel quality of the auxiliary carrier. And if the switching operation is determined to be executed, determining the auxiliary carrier as the auxiliary carrier to be switched, triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling. The UE is actively switched to the auxiliary carrier with better channel quality to better perform uplink scheduling, and the uplink flow of the UE in the carrier aggregation of the existing network can be improved. Particularly, for the case that the UE cannot directly obtain the uplink channel quality of the auxiliary carrier, the uplink transmission method for carrier aggregation, provided by the embodiment of the present invention, may be used to trigger the UE to actively perform the handover operation for the case that it is determined to perform the handover operation after the base station side completes the uplink channel quality estimation for the auxiliary carrier in the uplink auxiliary carrier, so as to reduce the throughput of the UE, improve the uplink traffic of the UE, and facilitate the uplink service experience of the user.
Example four
Referring to fig. 6, an embodiment of the present invention provides an uplink transmission apparatus 20 for carrier aggregation, where an uplink carrier includes a primary carrier and a secondary carrier, and is disposed at a UE side, and the apparatus includes:
the switching module 200 is configured to determine, according to the uplink channel quality of the secondary carrier estimated by the base station, a trigger signal sent after performing the switching operation based on the estimated uplink channel quality of the secondary carrier, perform the switching operation, and switch from the original uplink carrier to the secondary carrier to be switched for scheduling, where the trigger signal includes the secondary carrier to be switched.
And performing channel quality estimation on the auxiliary carrier at the base station side to obtain the estimated uplink channel quality of the auxiliary carrier, so as to judge whether a switching operation needs to be executed or not based on the estimated uplink channel quality of the auxiliary carrier, wherein the judging step is also executed at the base station side. The uplink transmission method for carrier aggregation provided by the embodiment of the invention can be used for reducing the processing amount of the UE side when the base station executes the method, particularly for the current situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier, the base station sends a trigger signal to the UE when judging that the auxiliary carrier with better uplink channel quality exists, and the UE is directly switched to the auxiliary carrier with better uplink channel quality for scheduling, so that the uplink transmission flow of the UE can be improved, and the service experience of the UE can be improved. Therefore, the embodiment of the invention aims to ensure that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling when the auxiliary carrier with better uplink channel quality is determined to exist by estimating the uplink channel quality of the uplink auxiliary carrier of the UE, the follow-up UE performs switching operation to switch among the auxiliary carriers, the UE can perform scheduling on the auxiliary carrier with better uplink channel quality, and the uplink flow of the UE in carrier aggregation of an LTE network or an NR existing network is improved.
As can be seen from the above analysis, the uplink transmission method for carrier aggregation according to the embodiment of the present invention performs uplink channel quality estimation on an auxiliary carrier in an uplink auxiliary carrier at a base station side, and determines whether to perform a handover operation based on the estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of a main carrier after obtaining the estimated uplink channel quality of the auxiliary carrier. And if the switching operation is determined to be executed, determining the auxiliary carrier as the auxiliary carrier to be switched, triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling. The UE is actively switched to the auxiliary carrier with better channel quality to better perform uplink scheduling, and the uplink flow of the UE in the carrier aggregation of the existing network can be improved. Particularly, for the case that the UE cannot directly obtain the uplink channel quality of the auxiliary carrier, the uplink transmission method for carrier aggregation, provided by the embodiment of the present invention, may be used to trigger the UE to actively perform the handover operation for the case that it is determined to perform the handover operation after the base station side completes the uplink channel quality estimation for the auxiliary carrier in the uplink auxiliary carrier, so as to reduce the throughput of the UE, improve the uplink traffic of the UE, and facilitate the uplink service experience of the user.
EXAMPLE five
An embodiment of the present invention provides a base station, where the base station includes the uplink transmission device 10 for carrier aggregation as described above. The uplink transmission device 10 is provided on the base station side, and includes: pre-estimation module 100, handover determination module 110, secondary carrier determination module 120, and trigger module 130. Wherein:
the estimation module 100 is configured to perform uplink channel quality estimation on the auxiliary carrier to obtain estimated uplink channel quality of the auxiliary carrier;
and performing channel quality estimation on the auxiliary carrier at the base station side to obtain the estimated uplink channel quality of the auxiliary carrier, so as to judge whether a switching operation needs to be executed or not based on the estimated uplink channel quality of the auxiliary carrier, wherein the judging step is also executed at the base station side. The uplink transmission method for carrier aggregation provided by the embodiment of the invention can be used for reducing the processing amount of the UE side when the base station side executes the method, and particularly for the current situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier, when the auxiliary carrier with better uplink channel quality is judged to exist, the UE is triggered to be directly switched to the auxiliary carrier with better uplink channel quality for scheduling, so that the uplink transmission flow of the UE can be improved, and the service experience of the UE can be improved. Therefore, the embodiment of the invention aims to ensure that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling when the auxiliary carrier with better uplink channel quality is determined to exist by estimating the uplink channel quality of the uplink auxiliary carrier of the UE, thereby improving the uplink flow of the UE in carrier aggregation of an LTE network or an NR existing network.
An example of performing, on a communication protocol layer of a base station, an uplink transmission method for carrier aggregation according to an embodiment of the present invention may be: after adding the auxiliary carrier, the control surface layer of the base station sends an indication of the uplink channel quality estimation of the auxiliary carrier to a scheduler which also belongs to the base station side; the scheduler performs uplink channel quality prediction on each auxiliary carrier after receiving the indication, wherein the uplink channel quality prediction is performed on each auxiliary carrier, and the subsequent UE performs switching operation and also performs switching among each auxiliary carrier.
A switching determining module 110, configured to determine to execute a switching operation based on the estimated uplink channel quality of the secondary carrier;
and after the estimated uplink channel quality of the auxiliary carrier is obtained, determining whether to execute switching operation or not based on the estimated uplink channel quality of the auxiliary carrier, and ending the uplink transmission method when the switching operation is determined not to be executed. And determining the auxiliary carrier to be switched when the switching operation is determined to be executed. The principle of determining to execute the switching operation based on the pre-estimated uplink channel quality of the secondary carrier may be whether the pre-estimated uplink channel quality of the secondary carrier is greater than a preset value, where the preset value may be set according to the uplink transmission quality of the secondary carrier, and the uplink transmission quality of the secondary carrier is better when the pre-estimated uplink channel quality of the secondary carrier is greater than the preset value.
An auxiliary carrier determining module 120, configured to determine an auxiliary carrier as an auxiliary carrier to be switched;
and determining that the switching operation can be executed based on the pre-estimated uplink channel quality of the auxiliary carrier so that the UE can be switched to the auxiliary carrier with better uplink channel quality, wherein the auxiliary carrier can be used as the auxiliary carrier to be switched. If the secondary carrier with better uplink channel quality of the plurality of secondary carriers appears, the secondary carrier to be switched can be determined according to the setting of the user, for example, the secondary carrier with the best uplink channel quality is determined as the secondary carrier to be switched.
And a triggering module 130, configured to trigger the UE to perform a switching operation, and switch from an original uplink carrier to an auxiliary carrier to be switched for scheduling.
And starting the base station to start the UE to execute the switching operation after determining that the switching operation and the auxiliary carrier to be switched can be executed, wherein the triggering can be a mode that the base station sends a message to the UE and the like. And the UE executes the switching operation to switch from the original uplink carrier to the auxiliary carrier to be switched for scheduling, and the step of executing the switching operation by the UE is to switch from the original uplink carrier to the auxiliary carrier to be switched.
The uplink transmission method of the embodiment of the invention realizes that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink transmission by estimating the uplink channel quality of the UE auxiliary carrier from the base station side, reduces the processing amount of the UE, and particularly can deal with the situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier in carrier aggregation. And the UE in the carrier aggregation can be actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling, so that the uplink flow of the UE in the carrier aggregation is improved.
As can be seen from the above analysis, in the uplink transmission method for carrier aggregation according to the embodiment of the present invention, after performing uplink channel quality estimation on an auxiliary carrier in an uplink auxiliary carrier at a base station side, obtaining estimated uplink channel quality of the auxiliary carrier, and then determining whether to perform a handover operation based on the estimated uplink channel quality of the auxiliary carrier. And if the switching operation is determined to be executed, determining the auxiliary carrier as the auxiliary carrier to be switched, triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling. The UE is actively switched to the auxiliary carrier with better channel quality to better perform uplink scheduling, and the uplink flow of the UE in the carrier aggregation of the existing network can be improved. Particularly, for the case that the UE cannot directly obtain the uplink channel quality of the auxiliary carrier, the uplink transmission method for carrier aggregation, provided by the embodiment of the present invention, may be used to trigger the UE to actively perform the handover operation for the case that it is determined to perform the handover operation after the base station side completes the uplink channel quality estimation for the auxiliary carrier in the uplink auxiliary carrier, so as to reduce the throughput of the UE, improve the uplink traffic of the UE, and facilitate the uplink service experience of the user.
EXAMPLE six
An embodiment of the present invention provides a user equipment, where the user equipment includes the uplink transmission device for carrier aggregation as described above. In the uplink transmission device 20 for carrier aggregation, an uplink carrier includes a primary carrier and a secondary carrier, and is disposed at a UE side, and the uplink transmission device includes:
the switching module 200 is configured to determine, according to the uplink channel quality of the secondary carrier estimated by the base station, a trigger signal sent after performing the switching operation based on the estimated uplink channel quality of the secondary carrier, perform the switching operation, and switch from the original uplink carrier to the secondary carrier to be switched for scheduling, where the trigger signal includes the secondary carrier to be switched.
And performing channel quality estimation on the auxiliary carrier at the base station side to obtain the estimated uplink channel quality of the auxiliary carrier, so as to judge whether a switching operation needs to be executed or not based on the estimated uplink channel quality of the auxiliary carrier, wherein the judging step is also executed at the base station side. The uplink transmission method for carrier aggregation provided by the embodiment of the invention can be used for reducing the processing amount of the UE side when the base station executes the method, particularly for the current situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier, the base station sends a trigger signal to the UE when judging that the auxiliary carrier with better uplink channel quality exists, and the UE is directly switched to the auxiliary carrier with better uplink channel quality for scheduling, so that the uplink transmission flow of the UE can be improved, and the service experience of the UE can be improved. Therefore, the embodiment of the invention aims to ensure that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling when the auxiliary carrier with better uplink channel quality is determined to exist by estimating the uplink channel quality of the uplink auxiliary carrier of the UE, the follow-up UE performs switching operation to switch among the auxiliary carriers, the UE can perform scheduling on the auxiliary carrier with better uplink channel quality, and the uplink flow of the UE in carrier aggregation of an LTE network or an NR existing network is improved.
As can be seen from the above analysis, the uplink transmission method for carrier aggregation according to the embodiment of the present invention performs uplink channel quality estimation on an auxiliary carrier in an uplink auxiliary carrier at a base station side, and determines whether to perform a handover operation based on the estimated uplink channel quality of the auxiliary carrier after obtaining the estimated uplink channel quality of the auxiliary carrier. And if the switching operation is determined to be executed, determining the auxiliary carrier as the auxiliary carrier to be switched, triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling. The UE is actively switched to the auxiliary carrier with better channel quality to better perform uplink scheduling, and the uplink flow of the UE in the carrier aggregation of the existing network can be improved. Particularly, for the case that the UE cannot directly obtain the uplink channel quality of the auxiliary carrier, the uplink transmission method for carrier aggregation, provided by the embodiment of the present invention, may be used to trigger the UE to actively perform the handover operation for the case that it is determined to perform the handover operation after the base station side completes the uplink channel quality estimation for the auxiliary carrier in the uplink auxiliary carrier, so as to reduce the throughput of the UE, improve the uplink traffic of the UE, and facilitate the uplink service experience of the user.
EXAMPLE seven
A storage medium provided in an embodiment of the present invention is a storage medium for computer readable storage, where the storage medium stores one or more programs, and the one or more programs are executable by one or more processors to implement the steps of the uplink transmission method for carrier aggregation shown in fig. 1 to 4, and specifically may perform the following steps:
step 10: performing uplink channel quality estimation on the auxiliary carrier to obtain the estimated uplink channel quality of the auxiliary carrier;
and performing channel quality estimation on the auxiliary carrier at the base station side to obtain the estimated uplink channel quality of the auxiliary carrier, so as to judge whether a switching operation needs to be executed or not based on the estimated uplink channel quality of the auxiliary carrier, wherein the judging step is also executed at the base station side. The uplink transmission method for carrier aggregation provided by the embodiment of the invention can be used for reducing the processing amount of the UE side when the base station side executes the method, and particularly for the current situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier, when the auxiliary carrier with better uplink channel quality is judged to exist, the UE is triggered to be directly switched to the auxiliary carrier with better uplink channel quality for scheduling, so that the uplink transmission flow of the UE can be improved, and the service experience of the UE can be improved. Therefore, the embodiment of the invention aims to ensure that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling when the auxiliary carrier with better uplink channel quality is determined to exist by estimating the uplink channel quality of the uplink auxiliary carrier of the UE, thereby improving the uplink flow of the UE in carrier aggregation of an LTE network or an NR existing network.
An example of performing, on a communication protocol layer of a base station, an uplink transmission method for carrier aggregation according to an embodiment of the present invention may be: after adding the auxiliary carrier, the control surface layer of the base station sends an indication of the uplink channel quality estimation of the auxiliary carrier to a scheduler which also belongs to the base station side; the scheduler performs uplink channel quality prediction on each auxiliary carrier after receiving the indication, wherein the uplink channel quality prediction is performed on each auxiliary carrier, and the subsequent UE performs switching operation and also performs switching among each auxiliary carrier.
Step 20: determining to execute switching operation based on the pre-estimated uplink channel quality of the auxiliary carrier;
and after the estimated uplink channel quality of the auxiliary carrier is obtained, determining whether to execute switching operation or not based on the estimated uplink channel quality of the auxiliary carrier, and ending the uplink transmission method when the switching operation is determined not to be executed. And determining the auxiliary carrier to be switched when the switching operation is determined to be executed. The principle of determining to execute the switching operation based on the pre-estimated uplink channel quality of the secondary carrier may be whether the pre-estimated uplink channel quality of the secondary carrier is greater than a preset value, where the preset value may be set according to the uplink transmission quality of the secondary carrier, and the uplink transmission quality of the secondary carrier is better when the pre-estimated uplink channel quality of the secondary carrier is greater than the preset value.
Step 30: determining the auxiliary carrier as the auxiliary carrier to be switched;
and determining that the switching operation can be executed based on the pre-estimated uplink channel quality of the auxiliary carrier so that the UE can be switched to the auxiliary carrier with better uplink channel quality, wherein the auxiliary carrier can be used as the auxiliary carrier to be switched. If the secondary carrier with better uplink channel quality of the plurality of secondary carriers appears, the secondary carrier to be switched can be determined according to the setting of the user, for example, the secondary carrier with the best uplink channel quality is determined as the secondary carrier to be switched.
Step 40: and triggering the UE to execute switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling. And starting the base station to start the UE to execute the switching operation after determining that the switching operation and the auxiliary carrier to be switched can be executed, wherein the triggering can be a mode that the base station sends a message to the UE and the like. And the UE executes the switching operation to switch from the original uplink carrier to the auxiliary carrier to be switched for scheduling, and the step of executing the switching operation by the UE is to switch from the original uplink carrier to the auxiliary carrier to be switched.
The uplink transmission method of the embodiment of the invention realizes that the UE is actively switched to the auxiliary carrier with better uplink channel quality for uplink transmission by estimating the uplink channel quality of the UE auxiliary carrier from the base station side, reduces the processing amount of the UE, and particularly can deal with the situation that the UE cannot directly acquire the uplink channel quality of the auxiliary carrier in carrier aggregation. And the UE in the carrier aggregation can be actively switched to the auxiliary carrier with better uplink channel quality for uplink scheduling, so that the uplink flow of the UE in the carrier aggregation is improved.
As can be seen from the above analysis, the uplink transmission method for carrier aggregation according to the embodiment of the present invention performs uplink channel quality estimation on an auxiliary carrier in an uplink auxiliary carrier at a base station side, and determines whether to perform a handover operation based on the estimated uplink channel quality of the auxiliary carrier after obtaining the estimated uplink channel quality of the auxiliary carrier. And if the switching operation is determined to be executed, determining the auxiliary carrier as the auxiliary carrier to be switched, triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling. The UE is actively switched to the auxiliary carrier with better channel quality to better perform uplink scheduling, and the uplink flow of the UE in the carrier aggregation of the existing network can be improved. Particularly, for the case that the UE cannot directly obtain the uplink channel quality of the auxiliary carrier, the uplink transmission method for carrier aggregation, provided by the embodiment of the present invention, may be used to trigger the UE to actively perform the handover operation for the case that it is determined to perform the handover operation after the base station side completes the uplink channel quality estimation for the auxiliary carrier in the uplink auxiliary carrier, so as to reduce the throughput of the UE, improve the uplink traffic of the UE, and facilitate the uplink service experience of the user.
In short, the above description is only a preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present specification shall be included in the protection scope of the present specification.
The system, apparatus, module or unit illustrated in one or more of the above embodiments may be implemented by a computer chip or an entity, or by an article of manufacture with a certain functionality. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
Computer-readable storage media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

Claims (11)

1. An uplink transmission method for carrier aggregation, where an uplink carrier includes a primary carrier and a secondary carrier, and the step performed at a base station side includes:
performing uplink channel quality estimation on the auxiliary carrier to obtain estimated uplink channel quality of the auxiliary carrier;
determining to execute switching operation based on the estimated uplink channel quality of the auxiliary carrier;
determining the auxiliary carrier as an auxiliary carrier to be switched;
and triggering the UE to execute the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling.
2. The uplink transmission method according to claim 1, wherein the determining to perform the handover operation based on the estimated uplink channel quality of the secondary carrier specifically includes:
calculating the difference value between the estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of the main carrier;
judging whether the difference value is larger than a preset threshold value or not;
and if the difference value is larger than the preset threshold value, determining to execute the switching operation.
3. The uplink transmission method according to claim 2, wherein the number of the secondary carriers is multiple, and if the difference is greater than the preset threshold, the determining the secondary carrier to be switched specifically includes:
and if the difference value of one of the auxiliary carrier waves is larger than the difference values of the other auxiliary carrier waves, selecting one of the auxiliary carrier waves as the auxiliary carrier wave to be switched.
4. The uplink transmission method according to any one of claims 1 to 3, wherein the obtaining of the estimated uplink channel quality of the secondary carrier after the uplink channel quality estimation of the secondary carrier specifically includes:
calculating the difference value between the uplink channel quality of the auxiliary carrier and the uplink channel quality of the main carrier by adopting the following formula:
Δ(i)SINR＝10log10(fScell(i))-10log10(fPcell)+NIScell(i)-NIPcell+10log10(AntNumScell(i))-10log10(AntNumPcell)
(1)
the estimated uplink channel quality of the auxiliary carrier is as follows:
SINRScell(i)＝SINRPcell+Δ(i)SINR (2)
wherein，SINRScell(i)For estimated uplink channel quality, SINR of auxiliary carrierPcellFor the uplink channel quality of a primary carrier, Pcell represents the primary carrier, Scell (i) represents the secondary carrier, i is the index of the secondary carrier, fScell(i),fPcellRespectively being the frequency point of the auxiliary carrier, the frequency point of the main carrier and NIScell(i),NIPcellInterference information of the auxiliary carrier and interference information of the main carrier, AntNum, respectivelyScell(i),AntNumPcellThe number of antenna ports of the auxiliary carrier and the number of antenna ports of the main carrier are respectively.
5. An uplink transmission method for carrier aggregation, where an uplink carrier includes a primary carrier and a secondary carrier, and the steps performed at a UE side include:
and determining a trigger signal sent after executing the switching operation based on the pre-estimated uplink channel quality of the auxiliary carrier after pre-estimating the uplink channel quality of the auxiliary carrier according to the base station, executing the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling, wherein the trigger signal comprises the auxiliary carrier to be switched.
6. An uplink transmission apparatus for carrier aggregation, where an uplink carrier includes a primary carrier and a secondary carrier and is disposed at a base station side, the apparatus comprising:
the estimation module is used for estimating the uplink channel quality of the auxiliary carrier to obtain the estimated uplink channel quality of the auxiliary carrier;
a switching determining module, configured to determine to execute a switching operation based on the estimated uplink channel quality of the secondary carrier;
the auxiliary carrier determining module is used for determining the auxiliary carrier to be switched;
and the triggering module is used for triggering the UE to execute the switching operation and switching the original uplink carrier to the auxiliary carrier to be switched for scheduling.
7. The uplink transmission device according to claim 6, wherein the handover determining module is specifically configured to:
calculating the difference value between the estimated uplink channel quality of the auxiliary carrier and the known uplink channel quality of the main carrier;
judging whether the difference value is larger than a preset threshold value or not;
and if the difference value is larger than the preset threshold value, determining to execute the switching operation.
8. An uplink transmission apparatus for carrier aggregation, where an uplink carrier includes a primary carrier and a secondary carrier and is disposed at a UE side, the apparatus comprising:
and the switching module is used for determining a trigger signal sent after the switching operation is executed based on the pre-estimated uplink channel quality of the auxiliary carrier after the uplink channel quality of the auxiliary carrier is pre-estimated by the base station, executing the switching operation, and switching from the original uplink carrier to the auxiliary carrier to be switched for scheduling, wherein the trigger signal comprises the auxiliary carrier to be switched.
9. A base station comprising the uplink transmission apparatus for carrier aggregation according to claim 6 or 7.
10. A user equipment comprising the uplink transmission apparatus for carrier aggregation according to claim 8.
11. A storage medium for computer readable storage, the storage medium storing one or more programs which, when executed by one or more processors, implement the steps of the uplink transmission method for carrier aggregation according to any one of claims 1 to 5.
CN202010743277.9A 2020-07-29 2020-07-29 Uplink transmission method and device for carrier aggregation and base station Pending CN114070496A (en)

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