CN102088760A - Power control method and device of uplink in carrier aggregation system - Google Patents
Power control method and device of uplink in carrier aggregation system Download PDFInfo
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- CN102088760A CN102088760A CN2009102421343A CN200910242134A CN102088760A CN 102088760 A CN102088760 A CN 102088760A CN 2009102421343 A CN2009102421343 A CN 2009102421343A CN 200910242134 A CN200910242134 A CN 200910242134A CN 102088760 A CN102088760 A CN 102088760A
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- user terminal
- power
- uplink transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
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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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a power control method of an uplink in a carrier aggregation system. The method comprises the following steps of: grouping carriers according to a transmission condition, or/and a transmission performance requirement, or/and carried information, and determining a power adjustment coefficient for each carrier group; distributing a carrier resource to a user terminal and determining uplink transmitting power of the user terminal; multiplying the determined uplink transmitting power and the power adjustment coefficient corresponding to the carrier group comprising the distributed carrier resource; judging whether the multiplied transmitting power is lower than the maximum uplink transmitting power of the user terminal; if so, taking the multiplied transmitting power as the uplink transmitting power of the user terminal, otherwise, taking the maximum uplink transmitting power as the uplink transmitting power of the user terminal; and informing the uplink transmitting power determined for the user terminal to the user terminal. The invention discloses a power control device of the uplink in the carrier aggregation system. By the method and the device, the communication quality is improved.
Description
Technical field
The present invention relates to the control technology of user terminal uplink transmission power, relate in particular to the Poewr control method and the device of up link in a kind of carrier aggregation system.
Background technology
In follow-on broadband wireless communication network, how support under the bandwidth in current wireless communication system that bigger bandwidth becomes a key factor that improves inter-cell user terminal throughput and user terminal average throughput.
At present, Long Term Evolution (LTE in third generation partner program, Long Term Evolution) all propose to adopt the mode of carrier aggregation to come in current wireless communication system, to support effectively bigger bandwidth in the system, to satisfy in the new generation of wireless standard demand to indexs such as throughput, peak rates.Carrier aggregation is to support the key technology of bigger bandwidth in the future broadband wireless communication systems, by different carrier waves is carried out polymerization, form the carrier wave of bigger bandwidth, user terminal (the UE that support has stronger ability on the bandwidth after the polymerization, User Equipment), for example, senior Long Term Evolution (LTE-Advanced, Long Term Evolution-Advanced) needs to surpass the bandwidth of 100MHz in the system, and existing carrier resource does not still possess the single carrier resource of 100MHz bandwidth, carries out polymerization to satisfy the demand of communication system high bandwidth with regard to the carrier wave that needs a plurality of different frequency ranges.But at present the carrier aggregation of discussing in the LTE-Advanced system is not considered the influence of the presence of intercell interference that inter-cell user terminal throughput and user terminal average throughput are played an important role, if the carrier wave of polymerization partly is subjected to serious presence of intercell interference, so, even obtained bigger bandwidth, make also and can use the throughput and the service transmission rate performance of the user terminal of this partially polymerized carrier wave seriously to descend, thereby offset the benefit that carrier aggregation is brought because of serious presence of intercell interference.
Summary of the invention
In view of this, main purpose of the present invention is to provide the Poewr control method and the device of up link in a kind of carrier aggregation system, can control the uplink transmission power of user terminal according to current communication conditions, has reduced the interference between the upward signal.
For achieving the above object, technical scheme of the present invention is achieved in that
The Poewr control method of up link in a kind of carrier aggregation system, according to transmission conditions or/and the transmission performance demand or/and institute's loaded information is divided into groups to carrier wave, and determine power for each carrier wave set and adjust coefficient; Described method also comprises:
Be user terminal distributing carrier wave resource, and determine the uplink transmission power of described user terminal;
The power that determined uplink transmission power is corresponding with the carrier resource place carrier wave set of being distributed is adjusted coefficient and is amassed;
Determine the uplink transmission power of described user terminal with the transmitting power of doing after long-pending, and notify described user terminal.
Preferably, describedly determine the uplink transmission power of described user terminal, comprising to make transmitting power after long-pending:
Judge whether the transmitting power after doing to amass is lower than the maximum uplink transmission power of described user terminal, be lower than the uplink transmission power of the transmitting power of Shi Yizuo after long-pending as described user terminal, otherwise with the uplink transmission power of maximum uplink transmission power as described user terminal.
Preferably, described to the carrier wave grouping, be specially:
According to transmission conditions or/and the transmission performance demand or/and institute's loaded information is determined the transmitting power of carrier wave needs, the carrier wave that required transmitting power is satisfied the setting threshold scope is divided into one group.
Preferably, describedly notify described user terminal, be specially:
To be carried on power control command transmitting for the uplink transmission power that described user terminal is determined and give described user terminal.
Preferably, described transmission conditions comprise that carrier wave transmits with line-of-sight transmission or with non line of sight; Described transmission performance demand comprises at least one in the current throughput of carrier-in-interference situation, the speed of carriers carry business, user terminal.
The output control device of up link in a kind of carrier aggregation system comprises grouped element, first determining unit, allocation units, second determining unit, computing unit, the 3rd determining unit and notification unit, wherein:
Grouped element, be used for according to transmission conditions or/and the transmission performance demand or/and institute's loaded information carrier wave is divided into groups;
First determining unit is used to each carrier wave set to determine power adjustment coefficient;
Allocation units are used to user terminal distributing carrier wave resource;
Second determining unit is used to described user terminal to determine uplink transmission power;
Computing unit, the uplink transmission power power corresponding with the carrier resource place carrier wave set of described allocation units distribution that is used for that described second determining unit is determined is adjusted coefficient and is amassed;
The 3rd determining unit is used for determining the uplink transmission power of described user terminal to make transmitting power after long-pending;
Notification unit is used for notifying described user terminal with the uplink transmission power that described the 3rd determining unit is determined.
Preferably, described the 3rd determining unit judges whether the transmitting power after doing to amass is lower than the maximum uplink transmission power of described user terminal, be lower than the uplink transmission power of the transmitting power of Shi Yizuo after long-pending as described user terminal, otherwise with the uplink transmission power of maximum uplink transmission power as described user terminal.
Preferably, described grouped element according to transmission conditions or/and the transmission performance demand or/and institute's loaded information is determined the transmitting power of carrier wave needs, the carrier wave that required transmitting power is satisfied the setting threshold scope is divided into one group.
Preferably, described notification unit will be carried in the power control command for the uplink transmission power that described user terminal is determined, and sends to described user terminal.
Preferably, described transmission conditions comprise that carrier wave transmits with line-of-sight transmission or with non line of sight; Described transmission performance demand comprises at least one in the current throughput of carrier-in-interference situation, the speed of carriers carry business, user terminal.
Among the present invention, at first to multicarrier by transmission conditions or/and the transmission performance demand or/and institute's loaded information is divided into groups, and is determined the power partition coefficient of carrier wave set; After determining carrier resource and uplink transmission power for user terminal, determine its place carrier wave set according to the carrier resource that distributes for user terminal, and determine the power partition coefficient of this carrier wave place carrier wave set correspondence, and this power partition coefficient and the uplink transmission power determined amass, and amass the result according to work and determine final uplink transmission power for user terminal.The uplink transmission power of determining for user terminal according to the present invention can effectively reduce the interference between the user terminal upward signal, thereby has guaranteed the service feature of communication system.
Description of drawings
Fig. 1 is the flow chart of the Poewr control method of up link in the carrier aggregation system of the present invention;
Fig. 2 is the composition structural representation of the output control device of up link in the carrier aggregation system of the present invention.
Embodiment
Basic thought of the present invention is: at first to multicarrier by transmission conditions or/and the transmission performance demand or/and institute's loaded information is divided into groups, and is determined the power partition coefficient of carrier wave set; After determining carrier resource and uplink transmission power for user terminal, determine its place carrier wave set according to the carrier resource that distributes for user terminal, and determine the power partition coefficient of this carrier wave place carrier wave set correspondence, and this power partition coefficient and the uplink transmission power determined amass, and amass the result according to work and determine final uplink transmission power for user terminal.The uplink transmission power of determining for user terminal according to the present invention can effectively reduce the interference between the user terminal upward signal, thereby has guaranteed the service feature of communication system.
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 is the flow chart of the Poewr control method of up link in the carrier aggregation system of the present invention, and as shown in Figure 1, the Poewr control method of up link specifically may further comprise the steps in the carrier aggregation system of the present invention:
Step 101: according to transmission conditions or/and the transmission performance demand or/and institute's loaded information is divided into groups to carrier wave, and determine power for each carrier wave set and adjust coefficient.
At first the multicarrier in the communication system being divided into groups, promptly by at least one in current transmission conditions, transmission performance demand and the carrier wave institute loaded information carrier wave is divided into groups, among the present invention, is power to be adjusted the identical carrier wave of coefficient be divided into one group.Above-mentioned transmission conditions comprise that carrier wave transmits with line-of-sight transmission or with non line of sight; Above-mentioned transmission performance demand mainly comprises at least one in the throughput that carrier-in-interference situation, the speed of carriers carry business, user terminal are current etc.If the information spinner beared information corresponding service type of carriers carry, be control information or business information etc.
For example, if transmit with the non line of sight transmission means, just must consider the decline technology of up channel, must guarantee that user terminal launches with higher ascending power, at this moment, will be according to the average uplink transmission power of user terminal, determine an ascending power for user terminal and adjust coefficient, such as being number greater than 1, the general transmitting power of this coefficient and user terminal do long-pending after, will satisfy the anti-fading of channel substantially; If the carrier-in-interference between the user terminal is bigger, with the upward signal transmitting power that reduces between these mutual interference user terminals, at this moment, ascending power is set adjusts coefficient, just guarantee that user terminal carries out the upward signal emission with the value that is lower than general transmitting power for less than 1 positive number.Certainly, also can comprehensively above-mentioned various parameter among the present invention and set a total power and adjust coefficient, make the upward signal transmitting power of user terminal remain reasonable value, to satisfy the required upward signal transmitting power of each performance as much as possible.
Concrete, according to transmission conditions or/and the transmission performance demand or/and institute's loaded information is determined the transmitting power of carrier wave needs, the carrier wave that required transmitting power is satisfied the setting threshold scope is divided into one group.Threshold range is provided with according to system's needs, or is provided with according to ASS, perhaps rule of thumb is provided with.
Step 102: be user terminal distributing carrier wave resource, and determine the uplink transmission power of described user terminal.
The base station is a user terminal distributing carrier wave resource, determines the transmitting power of upward signal simultaneously for user terminal.Be that resource and power control are carried out to user terminal in the base station, this step carries out resource allocation with existing base station and uplink transmission power determines that mode is identical, repeats no more it here and realizes details.
Step 103: the power that determined uplink transmission power is corresponding with the carrier resource place carrier wave set of being distributed is adjusted coefficient and is amassed.
For after user terminal determines the upward signal transmitting power, the base station is defined as the pairing carrier wave grouping of carrier resource that user terminal distributes in step 102, and then determines that the power of this carrier wave set correspondence adjusts coefficient.In the step 101 every group of carrier wave determined that power adjusts coefficient, therefore, after the carrier wave set of determining under the carrier wave, can determine the power of this carrier wave set and adjust coefficient, the power that is this carrier wave is adjusted coefficient.The base station utilizes the power of carrier wave place carrier wave set correspondence to adjust coefficient and amasss for the determined uplink transmission power of user terminal current.
Step 104: judge whether the transmitting power after doing to amass is lower than the maximum uplink transmission power of described user terminal, be lower than the uplink transmission power of the transmitting power of Shi Yizuo after long-pending as described user terminal, otherwise with the uplink transmission power of maximum uplink transmission power as described user terminal.
The base station judges whether the transmitting power after doing to amass is lower than the maximum uplink transmission power of described user terminal, the transmitting power after long-pending otherwise is defined as the current uplink transmission power that should use of user terminal with maximum uplink transmission power as the uplink transmission power of user terminal with this work when being lower than.
Step 105: will notify described user terminal for the uplink transmission power that described user terminal is determined.
The base station with the uplink transmission power determined for user terminal in the step 104, be the carrier resource information informing user terminal of user terminal distribution.
Concrete, the base station will be carried in the power control command for the uplink transmission power that described user terminal is determined, and sends to described user terminal.
After user terminal receives the power control command of base station transmission, according to uplink transmission power transmit uplink signal wherein.
Among the present invention, the flexibility of base station when scheduling carrier wave resources is greatly enhanced, and the setting of power partition coefficient makes the power adjustment in the up-link power control can be more targeted, helps improving communication quality.
Fig. 2 is the composition structural representation of the output control device of up link in the carrier aggregation system of the present invention, as shown in Figure 2, the output control device of up link comprises grouped element 20, first determining unit 21, allocation units 22, second determining unit 23, computing unit 24 and the 3rd determining unit 26 and notification unit 25 in the carrier aggregation system of the present invention, wherein, grouped element 20 be used for according to transmission conditions or/and the transmission performance demand or/and institute's loaded information carrier wave is divided into groups; First determining unit 21 is used to each carrier wave set to determine power adjustment coefficient; Allocation units 22 are used to user terminal distributing carrier wave resource; Second determining unit 23 is used to described user terminal to determine uplink transmission power; The uplink transmission power power corresponding with the carrier resource place carrier wave set of allocation units 22 distribution that computing unit 24 is used for that second determining unit 23 is determined is adjusted coefficient and is amassed; The 3rd determining unit 26 is used to judge whether the transmitting power after doing to amass is lower than the maximum uplink transmission power of described user terminal, be lower than the uplink transmission power of the transmitting power of Shi Yizuo after long-pending as described user terminal, otherwise with the uplink transmission power of maximum uplink transmission power as described user terminal; Notification unit 25 is used for notifying described user terminal with the uplink transmission power that the 3rd determining unit 26 is determined.
Concrete, grouped element 22 according to transmission conditions or/and the transmission performance demand or/and institute's loaded information is determined the transmitting power of carrier wave needs, the carrier wave that required transmitting power is satisfied the setting threshold scope is divided into one group.
Concrete, notification unit 25 will be carried in the power control command for the uplink transmission power that described user terminal is determined, and sends to described user terminal.
Above-mentioned transmission conditions comprise that carrier wave transmits with line-of-sight transmission or with non line of sight; Above-mentioned transmission performance demand comprises at least one in the current throughput of carrier-in-interference situation, the speed of carriers carry business, user terminal.If the information spinner beared information corresponding service type of carriers carry, be control information or business information etc.
Those skilled in the art are to be understood that, the output control device of up link is to design for the Poewr control method of realizing up link in the aforesaid carrier aggregation system in the carrier aggregation system shown in Figure 2, the function of each processing unit can be understood with reference to the associated description in the power control command Notification Method in the aforementioned carrier aggregation system in the system shown in Figure 2, the function of each processing unit can realize by the program that runs on the processor, also can realize by concrete logical circuit.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1. the Poewr control method of up link in the carrier aggregation system is characterized in that, according to transmission conditions or/and the transmission performance demand or/and institute's loaded information is divided into groups to carrier wave, and determine power for each carrier wave set and adjust coefficient; Described method also comprises:
Be user terminal distributing carrier wave resource, and determine the uplink transmission power of described user terminal;
The power that determined uplink transmission power is corresponding with the carrier resource place carrier wave set of being distributed is adjusted coefficient and is amassed;
Determine the uplink transmission power of described user terminal with the transmitting power of doing after long-pending, and notify described user terminal.
2. method according to claim 1 is characterized in that, describedly determines the uplink transmission power of described user terminal to make transmitting power after long-pending, comprising:
Judge whether the transmitting power after doing to amass is lower than the maximum uplink transmission power of described user terminal, be lower than the uplink transmission power of the transmitting power of Shi Yizuo after long-pending as described user terminal, otherwise with the uplink transmission power of maximum uplink transmission power as described user terminal.
3. method according to claim 1 is characterized in that, and is described to the carrier wave grouping, is specially:
According to transmission conditions or/and the transmission performance demand or/and institute's loaded information is determined the transmitting power of carrier wave needs, the carrier wave that required transmitting power is satisfied the setting threshold scope is divided into one group.
4. method according to claim 1 is characterized in that, describedly notifies described user terminal, is specially:
To be carried on power control command transmitting for the uplink transmission power that described user terminal is determined and give described user terminal.
5. according to each described method of claim 1 to 4, it is characterized in that described transmission conditions comprise that carrier wave transmits with line-of-sight transmission or with non line of sight; Described transmission performance demand comprises at least one in the current throughput of carrier-in-interference situation, the speed of carriers carry business, user terminal.
6. the output control device of up link in the carrier aggregation system is characterized in that, comprises grouped element, first determining unit, allocation units, second determining unit, computing unit, the 3rd determining unit and notification unit, wherein:
Grouped element, be used for according to transmission conditions or/and the transmission performance demand or/and institute's loaded information carrier wave is divided into groups;
First determining unit is used to each carrier wave set to determine power adjustment coefficient;
Allocation units are used to user terminal distributing carrier wave resource;
Second determining unit is used to described user terminal to determine uplink transmission power;
Computing unit, the uplink transmission power power corresponding with the carrier resource place carrier wave set of described allocation units distribution that is used for that described second determining unit is determined is adjusted coefficient and is amassed;
The 3rd determining unit is used for determining the uplink transmission power of described user terminal to make transmitting power after long-pending;
Notification unit is used for notifying described user terminal with the uplink transmission power that described the 3rd determining unit is determined.
7. device according to claim 6, it is characterized in that, described the 3rd determining unit judges whether the transmitting power after doing to amass is lower than the maximum uplink transmission power of described user terminal, be lower than the uplink transmission power of the transmitting power of Shi Yizuo after long-pending as described user terminal, otherwise with the uplink transmission power of maximum uplink transmission power as described user terminal.
8. device according to claim 6, it is characterized in that, described grouped element according to transmission conditions or/and the transmission performance demand or/and institute's loaded information is determined the transmitting power of carrier wave needs, the carrier wave that required transmitting power is satisfied the setting threshold scope is divided into one group.
9. device according to claim 6 is characterized in that, described notification unit will be carried in the power control command for the uplink transmission power that described user terminal is determined, and sends to described user terminal.
10. according to each described device of claim 6 to 9, it is characterized in that described transmission conditions comprise that carrier wave transmits with line-of-sight transmission or with non line of sight; Described transmission performance demand comprises at least one in the current throughput of carrier-in-interference situation, the speed of carriers carry business, user terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102421343A CN102088760A (en) | 2009-12-08 | 2009-12-08 | Power control method and device of uplink in carrier aggregation system |
| PCT/CN2010/072766 WO2010148813A1 (en) | 2009-12-08 | 2010-05-14 | Uplink power control method and device in carrier aggregation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102421343A CN102088760A (en) | 2009-12-08 | 2009-12-08 | Power control method and device of uplink in carrier aggregation system |
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| CN102088760A true CN102088760A (en) | 2011-06-08 |
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| CN2009102421343A Pending CN102088760A (en) | 2009-12-08 | 2009-12-08 | Power control method and device of uplink in carrier aggregation system |
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| WO (1) | WO2010148813A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109729577A (en) * | 2017-10-27 | 2019-05-07 | 成都鼎桥通信技术有限公司 | The power control command word indicating means and equipment of asymmetric up-link carrier polymerization |
| CN110461000A (en) * | 2019-04-29 | 2019-11-15 | 中国联合网络通信集团有限公司 | 5G subzone network capacity prediction methods and device |
| CN115865239A (en) * | 2021-09-27 | 2023-03-28 | 中国电信股份有限公司 | Information reporting method, device, medium and electronic equipment based on carrier aggregation |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2498758B (en) * | 2012-01-26 | 2014-02-19 | Broadcom Corp | Power control |
| GB2502064B (en) * | 2012-05-14 | 2014-04-09 | Broadcom Corp | Power control |
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| CN100377509C (en) * | 2005-08-16 | 2008-03-26 | 华为技术有限公司 | Method for confirming carrier reverse channel initial transmitting power |
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- 2009-12-08 CN CN2009102421343A patent/CN102088760A/en active Pending
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| CN1296345A (en) * | 1994-05-12 | 2001-05-23 | Ntt移动通信网株式会社 | Method for controlling emitted power and communication system using same |
| US20060270439A1 (en) * | 2005-05-23 | 2006-11-30 | Navini Networks, Inc. | Method for up-link transmit power management in a wireless broadband terminal |
| CN101039160A (en) * | 2006-03-17 | 2007-09-19 | 华为技术有限公司 | Multiplexing system, method for sharing control channel resource and reception equipment thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109729577A (en) * | 2017-10-27 | 2019-05-07 | 成都鼎桥通信技术有限公司 | The power control command word indicating means and equipment of asymmetric up-link carrier polymerization |
| CN110461000A (en) * | 2019-04-29 | 2019-11-15 | 中国联合网络通信集团有限公司 | 5G subzone network capacity prediction methods and device |
| CN115865239A (en) * | 2021-09-27 | 2023-03-28 | 中国电信股份有限公司 | Information reporting method, device, medium and electronic equipment based on carrier aggregation |
| CN115865239B (en) * | 2021-09-27 | 2023-08-08 | 中国电信股份有限公司 | Information reporting method, device, medium and electronic equipment based on carrier aggregation |
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| WO2010148813A1 (en) | 2010-12-29 |
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Application publication date: 20110608 |