WO2013159595A1 - Procédé et système de traitement de commande de puissance en boucle interne et contrôleur de réseau radio - Google Patents

Procédé et système de traitement de commande de puissance en boucle interne et contrôleur de réseau radio Download PDF

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Publication number
WO2013159595A1
WO2013159595A1 PCT/CN2013/072049 CN2013072049W WO2013159595A1 WO 2013159595 A1 WO2013159595 A1 WO 2013159595A1 CN 2013072049 W CN2013072049 W CN 2013072049W WO 2013159595 A1 WO2013159595 A1 WO 2013159595A1
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WO
WIPO (PCT)
Prior art keywords
power control
loop power
inner loop
user equipment
channel type
Prior art date
Application number
PCT/CN2013/072049
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English (en)
Chinese (zh)
Inventor
郭房富
黄鑫
戴丁樟
李金泽
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2013159595A1 publication Critical patent/WO2013159595A1/fr

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Classifications

    • 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
    • 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
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/282—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission taking into account the speed of the mobile
    • 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
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • H04W52/60—Signalisation aspects of the TPC commands, e.g. frame structure using different transmission rates for TPC commands

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and system for processing inner loop power control, and a radio network controller.
  • CDMA Code Division Multiple Access
  • UE User Equipment
  • Capacity which makes power control technology one of the most important core technologies in CDMA systems.
  • the goal of power control in a CDMA system is to minimize the transmit power of all UEs while maintaining the communication quality of the UE.
  • closed-loop power control is a very important power control phase after the UE accesses the base station (NodeB), and closed-loop power control is used to overcome path loss, fast fading, and slow fading.
  • the closed loop power control it is further divided into inner loop power control and outer loop power control.
  • the inner loop power is controlled to be NodeB and
  • Radio network controller Radio
  • RNC Network Controller
  • the inner loop power control frequency is 300 Hz.
  • the inner loop power control mode is fixedly configured by the upper layer such as the RNC.
  • an embodiment of the present invention provides a method for processing inner loop power control, including: acquiring a channel type in which a user equipment is located and a moving speed of the user equipment;
  • An inner loop power control mode is configured for the user equipment according to the channel type and the movement.
  • the embodiment of the present invention further provides a radio network controller, including: an acquiring module, configured to acquire a channel type in which the user equipment is located and a moving speed of the user equipment; The channel type and the movement configure an inner loop power control mode for the user equipment.
  • an embodiment of the present invention further provides a processing system for inner loop power control, including a radio network controller and a base station, where the radio network controller is in communication connection with the base station.
  • the method and system for processing inner loop power control and the radio network controller provided by the embodiment of the present invention obtain the channel type of the user equipment and the moving speed of the user equipment; and configure the inner loop for the user equipment according to the channel type and the mobile
  • the power control mode can adaptively adjust the inner loop power control mode to effectively improve the efficiency of the inner loop power control, so that the transmit power of the user equipment is adjusted to an optimal value, so as to effectively improve the uplink throughput of the CDMA system. Rate or effectively increase the number of users that can be accessed by CDMA systems, thereby effectively increasing the capacity of CDMA systems.
  • FIG. 1 is a flowchart of a method for processing an inner loop power control according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an RNC according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view of an RNC provided by another embodiment 4 of the present invention.
  • FIG. 4 is a schematic structural diagram of a processing system for inner loop power control according to an embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • the transmission power of the user equipment directly affects the total capacity of the CDMA system.
  • the goal of the power control is to make the transmission power of all UEs as small as possible under the condition of ensuring the communication quality of the UE. Increase the capacity of the CDMA system as much as possible.
  • the power control in the CDMA system is divided into uplink power control (i.e., controlling UE transmit power) and downlink power control (i.e., controlling NodeB transmit power).
  • uplink and downlink power control it can also be divided into two phases: open loop power control and closed loop power control.
  • the open loop power control occurs when the UE and the NodeB start to access, and the UE or NodeB is set in the open loop power control. Initial transmit power.
  • the closed-loop power control occurs after the UE and the NodeB are connected. In the closed-loop power control, the UE and the NodeB adjust the power according to the feedback information of the other party, that is, the UE and the NodeB are required to participate in the power adjustment at the same time.
  • the inner loop power control is power control between the NodeB and the UE
  • the outer loop power control is power control between the NodeB and the radio network controller (RNC).
  • RNC radio network controller
  • the NodeB controls the transmit power of the UE.
  • the inner loop power control is also the power control between the NodeB and the UE, specifically, the UE controls the transmit power of the NodeB.
  • uplink power control is mainly considered.
  • the inner loop power control mode is further divided into fast inner loop power control and slow inner loop power control, and the inner loop power control mode It is fixed in advance by the RNC and cannot be changed. Therefore, if the fixed-loop inner loop power control mode is fast inner loop power control, the power of the fast inner loop power control mode is adjusted due to the small change of the channel environment under the Additive White Gaussian Noise (AWGN) channel. It will bring fluctuations in the received power of the base station, so that the relative low-speed inner loop power control mode will bring a negative performance gain.
  • AWGN Additive White Gaussian Noise
  • the fixed-loop inner loop power control mode is fast inner loop power control
  • the channel environment changes too rapidly in the high-speed mobile scenario of the UE, so that the adjustment of the power of the fast inner loop power control mode is difficult to keep up with the change of the channel environment.
  • the relative power consumption of the MAN speed inner loop power control mode will also bring a negative performance gain.
  • the fixed-loop inner loop power control mode is the slow inner loop power control mode
  • the slow inner loop power control mode cannot adjust the transmit power according to the channel change condition in a non-AWGN channel with a low UE moving speed.
  • Fast inner loop power control brings a negative gain in throughput.
  • FIG. 1 is a flowchart of a method for processing inner loop power control according to an embodiment of the present invention.
  • the processing method of the inner loop power control method in this embodiment is an RNC.
  • the processing method of the inner loop power control in this embodiment may specifically include the following steps:
  • the RNC acquires a channel type in which the UE is located and a moving speed of the UE.
  • the RNC configures an inner loop power control mode for the UE according to the channel type and the mobility of the UE.
  • the method for processing the inner loop power control provided by the embodiment can obtain the inner loop power control mode by acquiring the channel type of the UE and the movement of the UE, and configuring the inner loop power control mode according to the channel type and movement of the UE. Perform adaptive adjustment to effectively improve the efficiency of inner loop power control, so that the UE's transmit power is adjusted to an optimal value to effectively improve the uplink throughput of the CDMA system or effectively increase the number of users accessible to the CDMA system. , thereby effectively increasing the capacity of the CDMA system.
  • the technical solution of the foregoing embodiment shown in FIG. 1 is applied to the inner loop power control in the uplink power control in the CDMA system, and is used to provide a configurable inner loop power control mode.
  • the method may include the following steps:
  • the RNC determines whether the channel type is an AWGN channel; when the channel type is an AWGN channel, performing step (2); otherwise, when the channel type is a non-AWGN channel, performing step (3);
  • the RNC configures the inner loop power control mode to be a slow inner loop power control mode; Since the environment change of the AWGN channel is small, it can be considered that the UE in the channel is moving slowly. Therefore, when the channel type is an AWGN channel, it is no longer necessary to further judge the speed of the UE.
  • the RNC determines whether the moving speed of the UE is greater than or equal to the preset speed threshold; when the moving speed of the UE is greater than or equal to the preset speed threshold, performing step (4); otherwise, when the moving speed of the UE is less than the preset speed threshold , performing step (5);
  • the preset speed threshold can be selected according to the actual scene.
  • the preset speed threshold can be selected as 120KM/h.
  • the inner loop power control mode of the RNC is configured as a slow inner loop power control mode
  • the RNC configures the inner loop power control mode as the fast inner loop power control mode.
  • the frequency of the slow inner loop power control mode is 300 Hz
  • the frequency of the fast inner loop power control mode is 1500 Hz.
  • the RNC may further include: the RNC receives data sent by the base station, such as the NodeB, where the data is The NodeB receives the UE's transmission.
  • step 100 "the RNC acquires the channel type in which the UE is located and the moving speed of the UE” may include: the RNC acquires the channel type in which the UE is located and the moving speed of the UE according to the data, and further, "the RNC according to the data.
  • Obtaining the channel type in which the UE is located and the mobility of the UE may include the following steps:
  • the RNC uses the channel identification method to identify the data and obtain the channel type of the UE. For example, when the RNC receives at least two data reported by the NodeB, each data corresponds to a different period; the RNC may be from at least two data. Obtaining a channel quality indicator (CQI) in each data, obtaining at least two CQIs; then the RNC acquires a CQI standard deviation according to at least two CQIs, and since each period corresponds to one CQI, the RNC obtains according to at least two CQIs. The CQI standard deviation is obtained by the RNC to obtain the corresponding CQI standard deviation for the CQI statistics of at least two periods.
  • CQI channel quality indicator
  • the RNC identifies the channel type of the user equipment according to the CQI standard deviation. For example, when the CQI standard deviation is in a certain range, the channel type of the UE is an AWGN channel, and when the CQI standard deviation is in other ranges, the channel type of the UE is a non-AWGN channel.
  • the RNC may obtain transmission power control from each of the at least two data. (transmission power control; TPC) word, obtain at least two TPC words; then the RNC obtains a TPC standard deviation according to at least two TPC words, and since each period corresponds to one TPC word, the RNC obtains a TPC standard deviation according to at least two TPC words, That is, the RNC obtains the corresponding TPC word standard deviation for the TPC word statistics of at least two periods.
  • TPC transmission power control
  • the RNC identifies the channel type of the user equipment according to the standard deviation of the TPC word.
  • the channel type of the UE is an AWGN channel
  • the channel type of the UE is a non-AWGN channel
  • the RNC may obtain the number of paths from the received data; and identify the channel type of the UE according to the number of paths. If the path includes a primary path, the channel type of the identified UE is the AWGN channel, and when the path number is greater than 1, the path is included, and the channel type of the identified UE is a non-AWGN channel.
  • the RNC takes into account the data and obtains the UE's movement.
  • the method may further include the following steps: the RNC sends the configured inner loop power control mode to the NodeB, so that the NodeB is configured according to the inner ring.
  • the power control mode controls the UE to perform power adjustment.
  • the NodeB may send the configured inner loop power control mode to the UE, so that the UE prepares for power adjustment according to the inner loop power control mode.
  • the NodeB calculates a Signal to Interference Ratio (SIR) according to the received data sent by the UE, and compares the calculated SIR and the preset SIR threshold value according to the calculated SIR and the preset SIR.
  • SIR Signal to Interference Ratio
  • the size relationship of the threshold value and the configured inner loop power control mode corresponding frequency send a power control command to the UE, and the UE adjusts the transmit power according to the received power control command and the configured inner loop power control mode. If the calculated SIR is greater than the preset SIR threshold, the corresponding power control command requires the UE to lower the transmit power. When the calculated SIR is less than the preset SIR threshold, the corresponding power control command requires the UE to increase. Transmit power.
  • SIR Signal to Interference Ratio
  • the method for processing the inner loop power control provided by the foregoing embodiment is used to obtain the channel type of the UE and the moving speed of the UE, and configure the inner loop power control mode for the UE according to the channel type and the moving speed of the UE.
  • the adaptive adjustment of the inner loop power control mode is implemented to effectively improve the efficiency of the inner loop power control, so that the UE's transmit power is adjusted to an optimal value, thereby effectively improving the uplink throughput rate of the CDMA system or effectively improving the CDMA system.
  • the system can access the number of users, thereby effectively increasing the capacity of the CDMA system. It will be understood by those skilled in the art that all or part of the steps of implementing the above method embodiments may be performed by hardware related to the program instructions.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the steps including the foregoing method embodiments are performed; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
  • FIG. 2 is a schematic structural diagram of an RNC according to an embodiment of the present invention.
  • the RNC of this embodiment may specifically include: an obtaining module 10 and a configuration module 11.
  • the obtaining module 10 is configured to acquire a channel type in which the UE is located and a moving speed of the UE.
  • the configuration modules 11 and 10 are configured to configure an inner loop power control mode for the UE according to the channel type and the mobile acquired by the iW A 10.
  • the RNC of the present embodiment is the same as the implementation mechanism of the foregoing related method embodiment by using the above-mentioned modules to implement the inner loop power control.
  • the description of the foregoing related method embodiments and details are not described herein again.
  • the RNC of the present embodiment can implement the inner loop power control mode by using the above-mentioned module to obtain the channel type of the UE and the movement of the UE and configure the inner loop power control mode according to the channel type and movement of the UE.
  • Adaptation adjustment to effectively improve the efficiency of the inner loop power control so that the UE's transmit power is adjusted to an optimal value, so as to effectively improve the uplink throughput rate of the CDMA system or effectively increase the number of users accessible to the CDMA system, thereby Effectively increase the capacity of CDMA systems.
  • FIG. 3 is a schematic diagram of a structure of an RNC according to another embodiment of the present invention. As shown in FIG. 3, the RNC of this embodiment may further include the following technical solutions in the RNC of the embodiment shown in FIG.
  • the configuration module 11 in the RNC of this embodiment may include: a determining unit 111 and a configuration unit 112.
  • the determining unit 111 is connected to the obtaining module 10, and the determining unit 111 is configured to determine whether the channel type acquired by the acquiring module 10 is an AWGN channel;
  • the configuration unit 112 is connected to the determining unit 111, and the configuring unit 112 is configured to determine, when the determining unit 111, that the channel type is In the AWGN channel, the inner loop power control mode is configured as a slow inner loop power control mode;
  • the determining unit 111 is further configured to: when determining that the channel type is a non-AWGN channel, further determining whether the moving speed is greater than or equal to a preset speed threshold;
  • the 112 is further configured to: when the determining unit 111 determines that the moving speed is greater than or equal to the preset speed threshold, configure the inner loop power control mode to be the slow inner loop power control mode;
  • the setting unit 112 is further configured to configure the
  • the RNC in this embodiment may further include a receiving module 12; the receiving module 12 is configured to: before the acquiring module 10 acquires a channel type in which the UE is located and a moving speed of the UE, Accounted for the ⁇ : data, the data is! ⁇ ⁇ Received by the UE; Correspondingly, the 3W A 10 is connected with the Receive 1 Inflammation 12, and 10 is used to obtain the channel type of the UE and the moving speed of the UE according to the data received by the Receiver 1 . Further, as shown in FIG.
  • the acquiring module 10 in the RNC of the embodiment may specifically include: an identifying unit 101 and a detecting unit 102, where the identifying unit 101 is connected to the receiving module 10, and the identifying unit 101 is configured to use the channel.
  • the identification method is configured to receive the channel type of the UE by the receiving module 12; for example, the receiving module 12 is configured to receive at least two data sent by the base station, where each data corresponds to a different period;
  • the identification unit 101 is specifically configured to obtain CQI from each data of at least two data to obtain at least two CQIs; and obtain a CQI standard deviation according to at least two CQIs, and then identify a channel type of the user equipment according to the CQI standard deviation.
  • the channel type of the UE is an AWGN channel
  • the channel type of the UE is a non-AWGN channel.
  • the receiving module 12 is specifically configured to receive at least two data sent by the base station
  • the identifying unit 101 is specifically configured to obtain a TPC word from each data of the at least two data, to obtain at least two TPC words; and according to at least two The TPC word acquires the TPC standard deviation, and then identifies the channel type of the user equipment according to the TPC word standard deviation.
  • the channel type of the UE when the standard deviation of the TPC word is in a certain range, the channel type of the UE is the AWGN channel, and when the standard deviation of the TPC word is in other ranges, the channel type of the UE is a non-AWGN channel.
  • the identification unit 101 is specifically configured to obtain the number of paths from the received data; and identify the channel type of the UE according to the number of paths. For example, when the path 1 includes a primary path, the channel type of the identified UE is an AWGN channel, and when the path number is greater than 1, the path is included, and the channel type of the identified UE is a non-AWGN channel.
  • the detecting unit 102 is also connected to the receiving module 10.
  • the detecting unit 102 is configured to detect the data received by the receiving device 10 and obtain the movement of the UE.
  • the determining unit 111 is specifically connected to the identifying unit 101, and the determining unit 111 is configured to determine whether the channel type acquired by the identifying unit 101 is an AWGN channel.
  • the determining unit 111 may be further connected to the detecting unit 102, and the determining unit 111 It is determined whether the moving speed of the detecting unit 102 is greater than or equal to a preset speed threshold.
  • the RNC in this embodiment may further include a sending module 13.
  • the sending module 13 is connected to the configuration module 11 (as specifically as the configuration unit 112, as shown in FIG. 3), and the sending module 13 is configured to configure the inner loop power control mode for the UE according to the channel type and the moving speed.
  • the configuration unit 112 configures the inner loop power control mode to send the configured inner loop power control mode to the UE, so that the base station controls the UE to perform power adjustment according to the configured inner loop power control mode.
  • the RNC in this embodiment is a technical solution of the present invention by using all the foregoing optional technical solutions.
  • the foregoing multiple technical solutions may be combined in any combination.
  • an optional embodiment of the present invention is formed, and details are not described herein again.
  • the RNC of the present embodiment is the same as the implementation mechanism of the foregoing related method embodiment by using the above-mentioned module to implement the inner loop power control. For details, refer to the description of the related method embodiments, and details are not described herein again.
  • the RNC of the embodiment can implement the inner loop power control mode by acquiring the channel type of the UE and the movement of the UE, and configuring the inner loop power control mode according to the channel type and movement of the UE according to the UE and the unit. Perform adaptive adjustment to effectively improve the efficiency of inner loop power control, so that the UE's transmit power is adjusted to an optimal value to effectively improve the uplink throughput of the CDMA system or effectively increase the number of users accessible to the CDMA system. , thereby effectively increasing the capacity of the CDMA system.
  • FIG. 4 is a schematic structural diagram of a processing system for inner loop power control according to an embodiment of the present invention.
  • the processing system of the inner loop power control of this embodiment specifically includes the RNC 20 and the NodeB 30.
  • the RNC 20 is configured to acquire a channel type of the UE and a moving speed of the UE, and configure an inner loop power control mode for the UE according to the channel type and the moving speed.
  • the RNC 20 is further configured to send the configured inner loop power control mode to the NodeB 30.
  • the NodeB 30 is configured to receive the configured inner loop power control mode sent by the RNC 20, and control the UE to perform power adjustment according to the configured inner loop power control mode.
  • the processing system of the inner loop power control of the embodiment may specifically adopt the RNC of the embodiment shown in FIG. 2 or FIG. 3, and specifically may adopt the foregoing embodiment shown in FIG. 1 and FIG.
  • the embodiment of the method for processing the inner loop power control of the subsequent alternative embodiment of the embodiment implements the inner loop power control.
  • the processing system of the inner loop power control in this embodiment implements the RNC to acquire the channel type of the UE and the moving speed of the UE by using the RNC and the NodeB, and configures the inner loop power control according to the channel type and mobility of the UE.
  • the RNC is also configured to send the configured inner loop power control mode to the NodeB.
  • the NodeB receives the configured inner loop power control mode sent by the RNC, and adjusts the transmit power according to the configured inner loop power control mode.
  • the inner loop power control mode can be adaptively adjusted to effectively improve the efficiency of the inner loop power control, so that the UE's transmit power is adjusted to an optimal value to effectively improve
  • the uplink throughput of the CDMA system can effectively increase the number of users that can be accessed by the CDMA system, thereby effectively increasing the capacity of the CDMA system.
  • the device embodiments described above are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located in one place. , or it can be distributed to at least two network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without deliberate labor.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention porte sur un procédé et un système de traitement de commande de puissance en boucle interne et sur un contrôleur de réseau radio (RNC). Le procédé comprend les opérations suivantes : un RNC obtient le type d'un canal dans lequel un UE se trouve et la vitesse de déplacement de l'UE (100); et le RNC configure un mode de commande de puissance en boucle interne pour l'UE en fonction du type de canal et de la vitesse de déplacement de l'UE (101). La solution technique des modes de réalisation de la présente invention peut être appliquée pour ajuster de manière adaptative le mode de commande de puissance en boucle interne, afin d'améliorer effectivement l'efficacité de commande de puissance en boucle interne de telle sorte que la puissance d'émission d'un UE soit ajustée à la valeur optimale, de façon à augmenter effectivement le débit de liaison montante d'un système CDMA ou à augmenter effectivement le nombre d'utilisateurs pouvant accéder au système CDMA, ce qui permet d'augmenter effectivement la capacité du système CDMA.
PCT/CN2013/072049 2012-04-26 2013-03-01 Procédé et système de traitement de commande de puissance en boucle interne et contrôleur de réseau radio WO2013159595A1 (fr)

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CN101640556A (zh) * 2008-07-29 2010-02-03 鼎桥通信技术有限公司 一种功率控制的方法和装置
CN101478813A (zh) * 2008-12-17 2009-07-08 北京天碁科技有限公司 一种用于高速下行分组接入的内环功率控制方法及终端
CN102647775A (zh) * 2012-04-26 2012-08-22 华为技术有限公司 内环功率控制的处理方法及系统、无线网络控制器

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US20220352946A1 (en) * 2021-04-30 2022-11-03 Qualcomm Incorporated Detecting static channels
US11646777B2 (en) * 2021-04-30 2023-05-09 Qualcomm Incorporated Detecting static channels

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