WO2005039083A1 - Procede destine a ajuster le mode d'un codage vocal multidebit adaptatif - Google Patents

Procede destine a ajuster le mode d'un codage vocal multidebit adaptatif Download PDF

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Publication number
WO2005039083A1
WO2005039083A1 PCT/CN2003/000888 CN0300888W WO2005039083A1 WO 2005039083 A1 WO2005039083 A1 WO 2005039083A1 CN 0300888 W CN0300888 W CN 0300888W WO 2005039083 A1 WO2005039083 A1 WO 2005039083A1
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WO
WIPO (PCT)
Prior art keywords
adaptive multi
rate mode
uplink
downlink
rate
Prior art date
Application number
PCT/CN2003/000888
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English (en)
Chinese (zh)
Inventor
Shenghua Huang
Jianwu Dou
Dapeng Li
Original Assignee
Zte Corporation
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.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to PCT/CN2003/000888 priority Critical patent/WO2005039083A1/fr
Priority to CNB2003801104012A priority patent/CN100539488C/zh
Priority to AU2003280537A priority patent/AU2003280537A1/en
Publication of WO2005039083A1 publication Critical patent/WO2005039083A1/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate
    • 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
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate

Definitions

  • the invention relates to a Wideband Code Division Multiple Access (WCDMA) communication system, and in particular to a method for adjusting an adaptive multi-rate (Adaptable Multi-Rate, R for short) speech coding mode in a WCDMA communication system.
  • WCDMA Wideband Code Division Multiple Access
  • R adaptive Multi-Rate
  • the coding rate of the source and the channel is fixed and has nothing to do with the channel quality.
  • the number of redundant bits of the channel coding is not sufficient to correct transmission errors.
  • the number of redundant bits in the channel coding should be increased and the number of bits of the source code should be reduced to improve the speech quality.
  • the number of bits of the source should be increased to improve speech quality. Therefore, the AMR speech encoder is used in the third generation mobile communication system.
  • AMR solves the problem of the rate allocation of source coding and channel coding in a more intelligent way. That is, the actual speech rate depends on the channel through AMR. Quality can be said to be a function of channel quality.
  • the user equipment In a WCDMA communication system, the user equipment (User Equipment, UE for short) in the process of moving, the radio environment is always changing, when the UE is away from the base station or the radio environment of the UE is deteriorated, if it remains The original rate transmission, so in order to ensure the quality of its service shield (Quality of Service, QoS for short), under the role of closed-loop power control, the base station will inevitably send signals with greater power. At this time, the impact of power changes is comparative Large, possible climb of power between many UEs N2003 / 000888 will lead to a sharp increase in power, which will further deteriorate the wireless environment and reduce the capacity of the communication system. Sometimes, even increasing the power of the UE to the limit will not improve the call quality. Therefore, it is necessary to use AMR to adjust Speech rate.
  • AMR Automatic Repeat Resolution
  • each AMR mode corresponds to a coding rate.
  • the system can only use several AMR modes.
  • the effect of speech coding using different AMR modes on the system is different.
  • a patent filed by Nokia Corporation with publication number WO0103448 and titled METHOD FOR SELECTION OF CODING METHOD gives a method for controlling AMR coding mode, which is based on cell load and frame error rate Adjust the AMR mode.
  • the uplink frame error rate used in this method cannot truly represent the actual wireless status of the UE, and may not be able to quickly track the situation of the wireless environment in which the UE is located in real time, so it may lead to the failure to select a suitable one.
  • AMR mode for encoding is based on cell load and frame error rate Adjust the AMR mode.
  • the technical problem to be solved by the present invention is to propose a method for adjusting an adaptive multi-rate speech coding mode in a WCDMA system, which can solve the shortcomings in the prior art that the AMR speech coding rate regulation requirements specified in the WCDMA standard cannot be well implemented.
  • the core method of the method for adjusting the adaptive multi-rate speech coding mode of the present invention is that the radio network controller determines the uplink and downlink allowed adaptive multi-rate mode according to the reported uplink and downlink load of the cell Based on the uplink transmit power of the user equipment and the downlink transmit code power of the Node B, determine the uplink and downlink adaptive multi-rate mode that a single user equipment wishes to adopt, and finally comprehensively determine whether to adjust the uplink and downlink adaptive multi-rate mode.
  • Step 1 The radio network controller determines the upper limit of the adaptive multi-rate mode allowed in the uplink according to the received total broadband power, and determines the upper limit of the adaptive multi-rate mode allowed in the downlink according to the transmit carrier power.
  • Step two the radio network controller according to the user equipment The reported uplink transmission power determines the uplink adaptive multi-rate mode desired by a single user equipment; and determines the downlink adaptive multi-rate mode desired by a single user equipment according to the downlink transmission code power of the user equipment reported by the Node B;
  • Step 3 The radio network controller determines the uplink and downlink adaptive multi-rate mode that a single user equipment should adopt according to the results of steps 1 and 2.
  • Step 4 Compare the uplink and downlink adaptive multi-rate modes determined in step 3 with the current uplink and downlink adaptive multi-rate modes. If the uplink adaptive multi-rate modes are different, control frames are transmitted to the user equipment through the transmission format of the control plane. Send an adaptive multi-rate mode adjustment command; if the downlink adaptive multi-rate mode is different, send an adaptive multi-rate mode adjustment command to the core network side through the user plane's speed control frame; if the uplink and downlink adaptive multi-rate modes are the same , Then no adjustment command is sent.
  • the invention adjusts the adaptive multi-rate speech coding mode based on the actual transmission power, which can well ensure the effective implementation of the speech AMR adjustment required by the WCDMA system, and improve the signal quality of the user communication in an optimal way as much as possible.
  • the transmission power of the small UE maximizes the system capacity, and the logic is reasonable and efficient.
  • FIG. 1 is a flowchart of an AMR mode adjustment method according to the present invention
  • FIG 2 is a flowchart of the value of M u upstream direction determination system AMR mode restriction
  • FIG. 3 is a flowchart of determining an AMR mode limit value M D in a system downlink direction;
  • FIG. 4 is a flowchart of adjusting the AMR mode in the uplink direction
  • Fig. 5 is a flowchart for adjusting the AMR mode in the downlink direction.
  • the parameters required for the control cannot truly represent the current wireless environment of the UE; and if a power-based processing method is used, the wireless status of the UE can be tracked in real time, This is because under the action of closed-loop power control, the power can be adjusted 15 times every 10 milliseconds. Therefore, the present invention proposes a speech AMR rate adjustment method based on actual transmission power.
  • the present invention makes full use of the measurement results on the UE and the Node B (ode B) in the WCDMA system, and determines the uplink and downlink based on the reported uplink and downlink load conditions in the radio network controller (Radio Network Controller, RNC). Allowable limit AMR mode, and then comprehensively decide whether to adjust the AMR mode according to the transmit power of the UE and the transmit code power of the Node B to the UE.
  • RNC Radio Network Controller
  • the measurement report of the UE and the measurement report of the Node B can be selected in two ways: periodic reporting and event-triggered reporting.
  • periodic reporting method the RNC compares and judges the reported measurement results with a preset threshold; for the event-triggered reporting method, the measurement control command sent to the UE and Node B by the RNC includes the preset Threshold. The comparison between the measurement result and the threshold is performed by the ENE and Node B.
  • the RNC is used to determine the type of the event on the root.
  • event-triggered reporting is used for the dedicated part
  • periodic reporting is used for the public part.
  • FIG. 1 The flow of the method according to the present invention is shown in FIG. 1.
  • Step 101 The radio network controller RNC sends measurement control commands to the UE, and simultaneously sends public and dedicated measurement control commands to the Node B.
  • N2003 / 000888 requires the UE to measure its uplink transmit power and report the event trigger when a preset condition is reached;
  • Node B In the common measurement control command sent to Node B, Node B is required to periodically measure and report the total broadband power received ( Received Wide Band Power (RTWP for short) and measured values of Transmitted Carrier Power (TCP for short);
  • RWP Received Wide Band Power
  • TCP Transmitted Carrier Power
  • the dedicated measurement control command sent to the Node B the Node B is required to send a downlink signal to a single UE.
  • the transmission code power is measured, and a report is triggered according to an event when a preset condition is reached.
  • the above-mentioned measurement control command sent also includes a measurement report gap and a filter coefficient.
  • Step 102 After receiving the control command sent by the RNC, the UE performs measurement according to specific measurement requirements, and reports the measurement result when the reporting conditions are met. After receiving the common measurement control command from the RNC, Node B performs measurement according to the requirements and reports the results when the reporting time comes. After receiving the dedicated measurement control command from the RNC, Node B performs measurement according to the requirements, and reports the measurement results when the reporting conditions are met.
  • Step 103 After receiving the report result, the RNC stores the uplink transmit power event reported by the UE and the downlink transmit code power event reported by Node B, and stores the RTWP measurement values and TCP measurement values related to each cell reported by Node B.
  • RTWP is the amount that directly reflects the uplink interference situation of the cell
  • TCP is the amount that directly reflects the downlink transmission power of the cell. Therefore, under the conditions determined by the cell plan, the above two measured values can respectively represent the uplink and downlink load of a cell.
  • Step 104 According to the cell load information, that is, the RTWP value and the TCP value, determine the uplink and downlink limit AMR modes respectively.
  • the upper limit of the AMR mode allowed for the uplink is determined according to the original uplink limit AMR mode of the cell and the current RTWP value
  • the upper limit of the AMR mode allowed for the downlink is determined according to the original downlink limit AMR mode of the cell and the current TCP value.
  • Step 105 If a power event reported by a single UE and a downlink transmission code power event reported by a Node B are received, the RNC determines an uplink AMR mode desired by the UE according to the uplink transmission power event, and The downlink transmit code power event determines the downlink AMR mode desired by the UE.
  • Step 106 According to the limit AMR mode obtained in step 104 and the AMR mode desired by a single UE obtained in step 105, finally determine a new uplink and downlink AMR mode that a single UE should adopt.
  • Step 107 Compare the new uplink-downlink AMR mode obtained in step 106 with the original uplink-downlink AMR mode. If the original AMR mode is consistent with the original AMR mode, the A-set adjustment command is not required to be sent.
  • AMR mode adjustment For adjustment in the uplink direction, an adjustment command will be sent to the UE through the control plane's transmission format combination control frame; for adjustment in the downlink direction, an adjustment command will be sent to the core network side through the user plane's rate control frame.
  • step 104 after determining the upper limit of the AMR mode allowed for the uplink and downlink of the cell, first determine whether the current uplink and downlink fine R mode of each UE is greater than the upper limit of the AMR mode allowed for the uplink and downlink; if the current uplink AMR mode is greater than the uplink of the cell
  • the upper limit of the allowed AMR mode is to send an adjustment command to the UE to adjust the current uplink AMR mode to the upper limit of the cell AMR mode allowed by the transmission format control frame of the control plane; if the current downlink AMR mode is greater than the R mode of the cell downlink allowed
  • the user plane's speed control frame is sent to the core network side to adjust the current downlink AMR mode to the cell downlink allowable upper limit AMR mode adjustment command; if the current uplink and downlink AMR mode is not greater than the uplink and downlink allowed A away mode
  • Upper limit no adjustment command is sent.
  • FIG. 2 is a flowchart for determining the limit value of the AMR mode allowed in the uplink, corresponding to step 104 in FIG. 1. Details are as follows:
  • the RNC judges whether the obtained value of RTWP within a normal range (step 202), i.e., satisfies R d ⁇ RTWP ⁇ R u, where ⁇ represents The power threshold when the uplink AMR coding rate is adjusted up represents the power threshold when the uplink AMR coding rate is reduced. If so, the limit value Mu of the uplink AMR mode is not changed (step 204).
  • step 203 further determine whether the value of RTWP is N2003 / 000888 is greater than the lowering threshold ⁇ (step 203), if it is greater than the lowering threshold and the current AMR mode limit value Mu is not the minimum allowable mode value provided by the system, then lower the AMR mode limit value and decrease the Mu value by 1 ( Step 205); otherwise, if the value of RTWP is less than the upper threshold ⁇ , and the current AMR mode limit value Mu is not the maximum allowable mode value provided by the system, increase the limit value of the AMR mode and increase the Mu value by 1 (step 206) .
  • FIG. 3 is a flowchart of determining a limit value of a downlink AMR mode, which corresponds to step 104 in FIG. 1.
  • the limit value Md of the current downlink AMR mode of the cell is queried (step 301). Then determine whether the TCP value obtained by the RNC is within a normal range (step 302), that is, whether it meets ⁇ 21 ⁇ ⁇ 7, where r d represents the power threshold when the downlink AMR coding rate is increased, and ⁇ unfortunatelyrepresents the downlink AMR coding rate The power threshold during the downward adjustment.
  • the limit value Md of the downlink AMR mode is not changed (step 304); if TCP is not within the above range, it is further judged whether the TCP value is greater than the lower threshold 7 (step 303), if Greater than the downward adjustment threshold value 7; and if the downstream AMR mode limit value Md is not the minimum allowable mode value provided by the system, the downstream AMR mode limit value is reduced and the Md value is reduced by 1 (step 305). Otherwise, if the TCP value is less than the upward adjustment door If the limit value is 7 and the limit value Md of the downlink AMR mode is not the maximum allowable mode value provided by the system, the limit value of the downlink AMR mode is increased, and the value of Md is increased by 1 (step 306).
  • FIG. 4 is an adjustment flowchart of the uplink AMR mode, corresponding to steps 105, 106, and 107 in FIG.
  • the companion is as follows:
  • the uplink transmission power reported by the UE is triggered by an event. Therefore, if the RNC does not receive the event reported by the UE, it does not perform any operation.
  • the RNC After receiving the event reported by the UE (step 401), first check whether the UE is in a soft handover state, and if so, do not adjust its uplink A mode; or determine this comprehensively according to the AMR limit mode of the relevant cell.
  • AMR mode of the UE such as the one that uses the minimum mode among the uplink limit modes allowed by multiple cells connected to the UE Adjust within the range, that is, take the minimum value of the uplink limit mode of multiple cells as the comprehensive limit mode.
  • the RNC queries to obtain the current uplink AMR mode value Nu of the UE, and then judges the uplink transmit power event reported by the UE. If the event indicates that the uplink transmit power of the current UE is too large
  • Step 402 then continue to determine whether the current uplink AMR mode is the minimum AMR mode provided by the system (step 404), if not, then lower the current uplink R mode by one level (step 406), that is, subtract 1 from Nu to obtain a single UE The desired uplink AMR mode value; if the current uplink R mode is already the minimum AMR mode, no adjustment is performed (step 407). If the event indicates that the uplink transmit power of the current UE is too small
  • Step 403 then continue to determine whether the current uplink AMR mode is the maximum AMR mode provided by the system (step 405), if not, then increase the current uplink AMR mode by one level (step 408), that is, increase Nu by 1 to obtain a single UE The desired uplink AMR mode value; if the current uplink A mode is already the maximum AMR mode, no adjustment is performed (step 407).
  • the uplink AMR mode value Nu desired by a single UE can be obtained, and then compared with the uplink allowable AMR mode limit value Mu obtained in FIG. 2 (step 409). If the Nu value is greater than the Mu value, the single UE The uplink AMR mode value to be used is Mu (step 410); if the Nu value is less than or equal to the Mu value, the uplink R mode value to be used by a single UE is Nu (step 411). Finally, compare the determined uplink AMR mode that should be adopted by a single UE with the uplink AMR mode of the current UE. If the two are different, then send an adjustment command to the UE through the control plane transmission format control frame (step 412); if they are the same, then No adjustment command is sent.
  • FIG. 5 is a flowchart of adjusting a downlink AMR mode, corresponding to steps 105, 106, and 107 in FIG. Details are as follows:
  • the Node B reports the downlink transmit code power of a single UE using event triggering. It is reported that if the RNC does not receive the event reported by the Node B dedicated measurement, it will not perform any operation.
  • the Node B After receiving the downlink transmit code power event of the UE reported by the Node B (step 501), first query whether the UE is in a soft handover state, and if so, do not adjust its downlink AMR mode; or according to the AMR of the relevant cell Limit mode to comprehensively determine the AMR mode of this UE. For example, it adopts the principle of adjusting the minimum mode among the downlink limit modes allowed by multiple cells connected to the UE. The minimum value is used as the comprehensive limit mode.
  • the current downlink adaptive multi-rate mode does not exceed this comprehensive limit mode, it can be adjusted; or the current downlink AMR mode can be reduced to the minimum AMR mode that can be used in the system. If the UE is not in a soft handover state, query the UE's current downlink AMR mode value M, and then discriminate the reported downlink transmit code power event.
  • step 502 If the event indicates that the current downlink transmit power is too high (step 502), then continue to determine whether the current downlink AMR mode is the minimum downlink AMR mode provided by the system (step 504), and if not, the current downlink AMR mode is downgraded by one level (step 506), that is, Nd is decremented by 1 as the downlink AMR mode value desired by a single UE; if the current downlink AMR mode is already the minimum mode provided by the system, no adjustment is performed (step 507).
  • step 503 If the event indicates that the current downlink transmit power is too small (step 503), then continue to determine whether the current downlink AMR mode is the maximum R mode provided by the system (step 505), and if not, increase the current downlink AMR mode by one level (step 508) ), That is, Nd is increased by 1 as the downlink AMR mode value desired by a single UE; if it is already the maximum AMR mode provided by the system, no adjustment is performed (step 507).
  • the downlink AMR mode value M desired by a single UE can be obtained, and then compared with the downlink allowed AMR mode limit value Md obtained through FIG. 2 (step 509). If the Nd value is greater than the Md value, the single UE The value of the downlink AMR mode to be used is Md (step 510); if the value of Nd is less than or equal to the value of Md, the value of the downlink AMR mode to be used by a single UE is Nd (step 511). Finally, compare the determined downlink AMR mode that a single UE should adopt with the downlink AMR mode of the current UE. If the two are different, an adjustment command is sent to the core network side through a speed control frame on the user plane (step 509).

Abstract

La présente invention concerne un procédé pouvant être utilisé pour ajuster le mode d'un codage multidébit adaptatif. Selon ce procédé, un contrôleur de réseau radio détermine la limite du mode multidébit adaptatif de la liaison ascendante et de la liaison descendante conformément au trafic de la liaison ascendante et de la liaison descendante, puis détermine la puissance de transmission de codage selon la puissance de transmission de liaison ascendante de l'équipement utilisateur et la puissance de transmission de liaison descendante du noeud B, et détermine synthétiquement si le mode multidébit adaptatif de la liaison ascendante et de la liaison descendante doit être ajusté. La présente invention, qui est basée sur l'ajustement du mode d'un codage vocal multidébit adaptatif de la puissance de transmission effective, permet de réaliser l'ajustement de l'AMR vocal requis par le système WCDMA avec efficacité, et d'améliorer la qualité de signal de la communication de l'utilisateur de manière optimale et de réduire la puissance de transmission de l'équipement utilisateur ainsi que de maximiser la capacité du système avec une logique raisonnable et une haute efficacité.
PCT/CN2003/000888 2003-10-22 2003-10-22 Procede destine a ajuster le mode d'un codage vocal multidebit adaptatif WO2005039083A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2003/000888 WO2005039083A1 (fr) 2003-10-22 2003-10-22 Procede destine a ajuster le mode d'un codage vocal multidebit adaptatif
CNB2003801104012A CN100539488C (zh) 2003-10-22 2003-10-22 自适应多速率语音编码模式的调整方法
AU2003280537A AU2003280537A1 (en) 2003-10-22 2003-10-22 Method of adjusting the mode of the adaptive multi-rate speech coding

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Application Number Priority Date Filing Date Title
PCT/CN2003/000888 WO2005039083A1 (fr) 2003-10-22 2003-10-22 Procede destine a ajuster le mode d'un codage vocal multidebit adaptatif

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WO (1) WO2005039083A1 (fr)

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US20080013528A1 (en) * 2006-04-12 2008-01-17 Interdigital Technology Corporation METHOD FOR RADIO RESOURCE CONTROL REQUESTED CODEC RATE CONTROL FOR VoIP
CN100415019C (zh) * 2005-06-30 2008-08-27 上海华为技术有限公司 一种自适应多速率语音传输格式配置方法
CN100452693C (zh) * 2005-10-31 2009-01-14 连展科技(天津)有限公司 一种在无线网络中有效保证话音质量的amr方法
WO2009099367A1 (fr) * 2008-02-05 2009-08-13 Telefonaktiebolaget Lm Ericsson (Publ) Procédé de commande de puissance pour commutation de circuit sur accès par paquet haut débit
CN1992559B (zh) * 2005-12-30 2011-04-20 中兴通讯股份有限公司 一种终端上行语音速率动态调整的方法
CN1983904B (zh) * 2006-04-06 2011-05-18 华为技术有限公司 一种系统负荷的控制方法和装置
CN102752809A (zh) * 2011-04-21 2012-10-24 联芯科技有限公司 上行amr的调控方法及系统

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CN100440749C (zh) * 2003-12-12 2008-12-03 华为技术有限公司 下行自适应多速率模式控制的方法
CN101521558B (zh) * 2008-03-01 2013-04-17 华为技术有限公司 自适应多速率的速率和相位调整方法
CN102761388A (zh) * 2011-04-29 2012-10-31 华为技术有限公司 数据传输中速率的调整方法和设备

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WO1999045660A1 (fr) * 1998-03-02 1999-09-10 Samsung Electronics Co., Ltd. Dispositif et procede de determination du taux de codage dans un systeme de telecommunications amcr
WO2001003448A2 (fr) * 1999-07-05 2001-01-11 Nokia Corporation Procede de selection de methode de codage

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CN1203009A (zh) * 1995-10-02 1998-12-23 艾利森电话股份有限公司 无线电电信网络中用于可变编码、调制及时隙分配的系统和方法
WO1999045660A1 (fr) * 1998-03-02 1999-09-10 Samsung Electronics Co., Ltd. Dispositif et procede de determination du taux de codage dans un systeme de telecommunications amcr
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100415019C (zh) * 2005-06-30 2008-08-27 上海华为技术有限公司 一种自适应多速率语音传输格式配置方法
CN100452693C (zh) * 2005-10-31 2009-01-14 连展科技(天津)有限公司 一种在无线网络中有效保证话音质量的amr方法
CN1992559B (zh) * 2005-12-30 2011-04-20 中兴通讯股份有限公司 一种终端上行语音速率动态调整的方法
CN1983904B (zh) * 2006-04-06 2011-05-18 华为技术有限公司 一种系统负荷的控制方法和装置
US20080013528A1 (en) * 2006-04-12 2008-01-17 Interdigital Technology Corporation METHOD FOR RADIO RESOURCE CONTROL REQUESTED CODEC RATE CONTROL FOR VoIP
WO2009099367A1 (fr) * 2008-02-05 2009-08-13 Telefonaktiebolaget Lm Ericsson (Publ) Procédé de commande de puissance pour commutation de circuit sur accès par paquet haut débit
CN102752809A (zh) * 2011-04-21 2012-10-24 联芯科技有限公司 上行amr的调控方法及系统
CN102752809B (zh) * 2011-04-21 2016-08-10 联芯科技有限公司 上行amr的调控方法及系统

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CN1802806A (zh) 2006-07-12
CN100539488C (zh) 2009-09-09

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