WO1999065158A1 - Procede pour maintenir une condition de fonctionnement d'un systeme radiotelephonique mobile, station mobile et station de base - Google Patents

Procede pour maintenir une condition de fonctionnement d'un systeme radiotelephonique mobile, station mobile et station de base Download PDF

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Publication number
WO1999065158A1
WO1999065158A1 PCT/DE1999/001614 DE9901614W WO9965158A1 WO 1999065158 A1 WO1999065158 A1 WO 1999065158A1 DE 9901614 W DE9901614 W DE 9901614W WO 9965158 A1 WO9965158 A1 WO 9965158A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
mobile station
control command
mobile
msi
Prior art date
Application number
PCT/DE1999/001614
Other languages
German (de)
English (en)
Inventor
Bernhard Raaf
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1999065158A1 publication Critical patent/WO1999065158A1/fr

Links

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
    • H04W52/30—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
    • H04W52/362—Aspects of the step size
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • 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
    • 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
    • H04W52/44—TPC being performed in particular situations in connection with interruption of transmission

Definitions

  • the invention relates to a method for maintaining an operating condition of a mobile radio system, which consists in the fact that the radio signals transmitted by the mobile stations have a reception power lying within a tolerance range at the base station.
  • time multiple access TDMA time multiple access
  • frequency multiple access FDMA frequency multiple access FDMA
  • CDMA Code Division Multiple Access
  • This can be a so-called wideband CDMA mobile radio system with several frequency ranges for the uplink (mobile station to base station) and, separately therefrom, several frequency ranges for the downlink (base station to mobile station) and / or a TD / CDMA system with a common frequency range for the uplink and the downlink where the Separation between uplink and downlink is achieved by combining the CDMA system with a TDMA system.
  • Hybrid multiple access methods of this type and all transmission methods which have a CDMA component are also referred to as CDMA systems in the context of this application.
  • the receiving device of the base station must simultaneously receive, process and detect radio signals transmitted in a frequency channel, possibly of several different connections.
  • the signal / noise ratio is determined in the base station for each connection from the mobile station to the base station.
  • the measurement results or commands for regulating the transmission power are signaled to the mobile stations, whereupon theirs
  • the invention is therefore based on the object of specifying a method, a mobile station and a base station with which it can be achieved that, even in the case of unusual transmission conditions, the radio signals transmitted by the mobile stations and received at the base station have an output which is within a tolerance range.
  • the invention is therefore based on the idea of regulating the transmission power of the mobile stations within a control range under normal transmission conditions, for example a sufficiently large distance between all mobile stations and the base station allocated to these mobile stations, such that the radio signals transmitted by the mobile stations and received at the base station have a reception power lying within a tolerance range; in the case of unusual transmission conditions, such as an insufficient distance between a mobile Station and the base station assigned to this mobile station, a control command is generated which restricts the operation of this mobile station.
  • FIG. 1 shows a schematic illustration of a mobile radio system
  • Figure 2 is a schematic representation of a radio.
  • FIG. 1 shows a cellular mobile radio system which consists of a multiplicity of mobile switching centers MSC which are networked with one another or which provide access to a fixed network PSTN. Furthermore, these mobile switching centers MSC are each connected to at least one base station controller BSC, which can also be formed by a data processing system. Each base station controller BSC is in turn connected to at least one base station BS.
  • a base station BS is a radio device which can establish a radio connection to other radio devices, so-called mobile stations MS, via a radio interface. Data can be transmitted between the mobile stations MS and the base station BS assigned to these mobile stations MS by means of radio signals.
  • the range of the radio signals of a base station BS essentially define a radio cell FZ.
  • the allocation of resources such as frequency bands or spreading code sets to radio cells and thus to the data to be transmitted can be controlled by control devices such as the base station controller BSC.
  • Base stations BS and a base station controller BSC can be combined to form a base station system BSS.
  • the base station system BSS is also responsible for radio channel management, data rate adaptation, monitoring the radio transmission link, handover procedures, connection control and the allocation or signaling of the spreading codes to be used and transmits the necessary signaling information to the mobile stations MS.
  • the physical transmission resources are assigned to logical channels by a multiple access method such as a CDMA method according to a defined scheme.
  • a multiple access method such as a CDMA method according to a defined scheme.
  • the logical channels can be assigned to a specific connection between a base station BS and a mobile station MS
  • a control system for the transmission power of the transmitter power amplifier SV of the mobile stations MS is provided.
  • the transmission power of the mobile stations MS can be set in contrast to the reception power of the radio signals that are sent from the base station BS to the mobile stations MS.
  • the reception power of the radio signals sent by the mobile stations MS is measured at the base station BS and a control command is generated which, after transmission to the corresponding mobile stations MS, development of the transmission power of these mobile stations MS, so that the reception powers of the radio signals of the different mobile stations MS at the base station BS are as small as possible or as large as possible.
  • the control system can thus be implemented by the interaction of corresponding components of the base station BS and the mobile station MS.
  • a first control command is generated, possibly transmitted to the control device STE of the mobile station MSI, and there triggers the switching of the mobile station MSI into a defined, restricted operating state, in which in particular the uplink communication between the mobile station MSI and the base station BS is restricted in such a way that the connections of the other mobile stations MS2, MS3 to the base station BS are not disturbed too much.
  • the downlink communication from the base station BS to the mobile station MSI can be maintained in this restricted operating state.
  • the first control command is no longer generated or a second control command is generated, which is transmitted to the control device STE of the mobile station MSI and triggers the switching of the mobile station MSI into the normal operating mode.
  • a command is generated in the base station BS or the mobile station MSI which interrupts or The affected connection between the mobile station MSI and the base station BS is terminated or the connection is switched over to another base station and / or a different frequency range. If this handover procedure fails, the mobile station MSI is not switched back to the original base station BS in order to avoid a new near-far problem.
  • the first control command is generated in the mobile station MSI if, for example, due to the short distance between the mobile station MSI and the base station BS, the transmission power of the mobile station MSI has been regulated down to the lower transmission power limit by the transmission power control and by the control system further commands for further reducing the transmission power are transmitted for the transmission power regulation.
  • the first control command is generated in the base station BS when the reception power of the radio signals transmitted by the mobile station MSI at the base station BS exceeds a predetermined reception power threshold.
  • the first control command is generated in the base station BS when the interference in the transmission or reception of the radio signals transmitted by other mobile stations MS2, MS3 is greater than a predetermined interference threshold value, which can be defined by the signal to noise ratio.
  • Control commands that are generated in the base station BS can be transmitted as a signaling message via a signaling channel to the corresponding mobile station MSI.
  • the first control command can also be generated immediately after the first access attempt when establishing a connection and can be transmitted to the mobile station MSI instead of a channel assignment.
  • the first control command can cause the mobile station MSI to refrain from or delay the connection establishment.
  • the processing of the first control command by the control device STE of the mobile station MS leads to a switching of the mobile station MS into a restricted operating state.
  • the following definitions are possible for a restricted operating state:
  • the operation of the transmission power amplifier SV and possibly other upstream components, in particular the high-frequency device HF, is blocked or prevented either by a defined switch-off command from the control device STE to the respective components is transmitted, or the power supply of these components is switched off by the control device STE.
  • the mobile station MSI is switched to a discontmous transmission (DTX) mode, in which the transmitter device SE is switched on in pulse form only at certain time intervals and m the switched on time periods are used in particular for the transmission of particularly important data.
  • DTX discontmous transmission
  • the data are channel-coded against transmission errors before transmission, the channel coding being carried out with less redundancy than in the normal operating state or the transmission being carried out with a lower spreading factor.
  • the duty cycle (ratio between the time in which the transmitting device SE is switched on and the total time) of the pulsed operation of the mobile station MS m as a function of the reception power of the radio signals transmitted by the mobile stations at the base station BS or as a function of the commands Transmission power control is varied so that the received power of the radio signals received at the base station BS is at least temporarily within a tolerance range.
  • the mobile station MSI is switched to an emergency operating state in which the user data rate is reduced at least in the uplink, so that the interference of the other connections between the other mobile stations MS and the base station BS is below an interference threshold, but the connection between the mobile station concerned MSI and the base station BS is not totally interrupted.
  • This can be achieved by a stronger voice compression, a stronger voice activity control or a slower data transmission, in which packet data in the downlink are only answered by a confirmation packet after several packets have been received.
  • the first control command is no longer generated or a second control command is generated to end the restricted operation, which can possibly be transmitted from the base station BS as a signaling message to the mobile station MSI.
  • the restricted operation of the mobile station MSI is ended as soon as there are normal transmission conditions between the mobile station MSI and the base station BS, such as a sufficiently large distance. This can be recognized by the fact that the radio signals sent by the base station BS have a reception power at the mobile station MSI which is below a predetermined reception power threshold.
  • the mobile station MSI sends radio signals to the base station BS at limited time intervals during the restricted operation and as soon as the radio signals sent by the mobile station MSI at the base station BS have a reception power that is below a predefined reception power threshold value, the first control command is no longer generated , or the second control command is generated.
  • a further embodiment provides that the mobile station MSI sends pulsed test radio signals after a certain period of time in the restricted operating state or after receipt of a corresponding control command from the base station BS, the received power of which is measured by the base station BS and the base station BS is dependent on generates a second control command that measures the received power that causes the restricted operation of the mobile station MS to end.
  • a first and a second control command are alternately used for two or more mobile stations.
  • NEN that are in the restricted operating state, generated and distributed to mobile stations MS in such a way that not all mobile stations MS transmit at the same time, or that the reception power at the base station BS is as constant as possible. In this way, several mobile stations MS can determine in a coordinated manner whether there are normal or unusual transmission relationships between them and the base station BS.
  • FIG. 2 shows a radio, which can be a base station BS or a mobile station MS. It consists of a data source DQ and a data sink DS, which can be implemented by a microphone and a loudspeaker element or corresponding connections to a mobile switching center MSC.
  • a control device STE a processing device VE, a power supply device SVE, a high-frequency device HF consisting of a receiving device EE, a transmitting device SE and a frequency synthesizer SYN and an antenna device ANT are provided.
  • the individual elements of the radio are also connected to one another by conductor tracks or bus systems.
  • the control device STE essentially consists of a program-controlled microcontroller MC and the processing device VE consists of a digital signal processor DSP, both of which have write and read access to memory modules SPE.
  • the microcontroller MC controls and controls all essential elements and functions of the radio and controls the communication and signaling sequence, the switching on and off of certain components of the radio, the switching of the radio into certain operating states, and the detection or determination of the transmission ratios of the connections between the mobile station MS and base station.
  • SPE are the program data that are used to control the radio and the communication process, especially the signaling sation procedures are required, device information, information entered by the user, information generated during the processing of signals are stored and, in particular, reception power threshold values for detecting unusual transmission conditions are stored.
  • the digital signal processor DSP is responsible for the speech and channel coding of the data to be transmitted or received.
  • the analog audio signals and the analog signals originating from the high-frequency device HF are converted into digital signals by analog / digital converters A / D and processed by the digital signal processor DSP.
  • Data to be transmitted are spread by a connection-specific spreading code, modulated by a modulator MOD, amplified by a transmission power amplifier SV and finally emitted with the corresponding transmission power via the antenna ANT.
  • the radio signals are received by the antenna ANT with a reception power, amplified by a reception amplifier EV, demodulated by a demodulator DEM, despread and finally detected by the processing device VE.
  • control commands for transmitting power control can be generated in the control device STE, which can either be processed directly in the control device STE of the mobile station, or can first be transmitted via a signaling channel from the base station BS to the mobile station MS and there can be processed by the control device STE.
  • the power of the transmit power amplifier SV can be regulated or the mobile station MS can be switched to defined operating states.
  • the mobile station in question is switched to a restricted operating state at extremely short distances between the mobile station and base station, in order to avoid the mobile station in other connections of this radio cell due to the limited control range of the transmit power amplifier to avoid occurring faults.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour résoudre le problème de la variation de la puissance de réception de stations mobiles proches-éloignées, notamment dans des systèmes radiotéléphoniques mobiles AMCR, dans lequel pour des distances extrêmement faibles entre la station mobile et la station de base, la station mobile concernée est commutée dans un état de fonctionnement limité, afin d'éviter les interférences apparaissant dans d'autres connexions de cette cellule radiotéléphonique en raison de la plage de réglage limitée de l'amplificateur de puissance d'émission de la station mobile.
PCT/DE1999/001614 1998-06-10 1999-06-01 Procede pour maintenir une condition de fonctionnement d'un systeme radiotelephonique mobile, station mobile et station de base WO1999065158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19826024.5 1998-06-10
DE19826024 1998-06-10

Publications (1)

Publication Number Publication Date
WO1999065158A1 true WO1999065158A1 (fr) 1999-12-16

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001031808A1 (fr) * 1999-10-25 2001-05-03 Motorola Limited Reduction de la puissance d'emission dans une station mobile
WO2001043296A2 (fr) * 1999-12-08 2001-06-14 Telefonaktiebolaget Lm Ericsson (Publ) Commande de la puissance d'emission d'une station mobile
EP1204286A1 (fr) * 2000-06-23 2002-05-08 Matsushita Electric Industrial Co., Ltd. Dispositif de terminal reseau, dispositif de station de base et procede de communication radio
WO2002041523A2 (fr) * 2000-11-15 2002-05-23 Qualcomm Incorporated Procede et appareil permettant de reduire la puissance d'emission dans un systeme a debit binaire eleve
WO2001076098A3 (fr) * 2000-03-30 2002-08-01 Qualcomm Inc Procede et appareil de commande des transmissions d'un systeme de communication
WO2002091597A2 (fr) * 2001-05-03 2002-11-14 Qualcomm Incorporated Procede et dispositif de commande pour transmissions ascendantes dans un systeme de communication sans fil
WO2002098017A1 (fr) * 2001-06-01 2002-12-05 Nortel Networks Limited Procede de controle de puissance d'emission
WO2004102827A2 (fr) 2003-05-13 2004-11-25 Koninklijke Philips Electronics N.V. Systeme de communication
US7653016B2 (en) 2003-06-24 2010-01-26 Alcatel Lucent Method of controlling access to resources of a radiocommunication network and base station for implementing the method
WO2010039562A1 (fr) * 2008-09-23 2010-04-08 Qualcomm Incorporated Procédé et appareil de contrôle d’émission d’ue dans un système de communication sans fil
US7965679B2 (en) 2005-05-11 2011-06-21 Nokia Corporation Method, apparatus and computer program providing signaling of zero/full power allocation for high speed uplink packet access (HSUPA)
CN102237928A (zh) * 2010-05-07 2011-11-09 华为技术有限公司 一种信号的传输方法、装置和系统
WO2016089522A1 (fr) * 2014-12-04 2016-06-09 Qualcomm Incorporated Augmentation de débit de liaison montante via des dispositifs d'utilisateurs contraints à une puissance minimale

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EP0713300A1 (fr) * 1994-11-19 1996-05-22 Motorola Ltd Procédé pour la réduction d'interférence dans un système de communication
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US5734967A (en) * 1994-02-17 1998-03-31 Motorola, Inc. Method and apparatus for reducing self interference in a communication system

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US5732347A (en) * 1994-01-26 1998-03-24 Oki Telecom, Inc. Imminent change warning
US5734967A (en) * 1994-02-17 1998-03-31 Motorola, Inc. Method and apparatus for reducing self interference in a communication system
WO1996004718A1 (fr) * 1994-07-29 1996-02-15 Qualcomm Incorporated Procede et appareil pour reguler la puissance dans un systeme de communication a vitesse variable
EP0713300A1 (fr) * 1994-11-19 1996-05-22 Motorola Ltd Procédé pour la réduction d'interférence dans un système de communication
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Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001031808A1 (fr) * 1999-10-25 2001-05-03 Motorola Limited Reduction de la puissance d'emission dans une station mobile
GB2355887B (en) * 1999-10-25 2004-01-07 Motorola Ltd Reduction of transmit power in a mobile station
WO2001043296A2 (fr) * 1999-12-08 2001-06-14 Telefonaktiebolaget Lm Ericsson (Publ) Commande de la puissance d'emission d'une station mobile
WO2001043296A3 (fr) * 1999-12-08 2002-01-10 Ericsson Telefon Ab L M Commande de la puissance d'emission d'une station mobile
US6735447B1 (en) 1999-12-08 2004-05-11 Telefonaktiebolaget Lm Ericsson (Publ) Transmission power control of a mobile station
EP1901442A3 (fr) * 2000-03-30 2010-08-04 QUALCOMM Incorporated Procédé et appareil de contrôle de transmissions d'un système de communication sans fil
US6744743B2 (en) 2000-03-30 2004-06-01 Qualcomm Incorporated Method and apparatus for controlling transmissions of a communications system
AU2001249379B2 (en) * 2000-03-30 2007-02-01 Qualcomm Incorporated Method and apparatus for controlling transmissions of a communications system
EP1901442A2 (fr) * 2000-03-30 2008-03-19 QUALCOMM Incorporated Procédé et appareil de contrôle de transmissions d'un système de communication sans fil
WO2001076098A3 (fr) * 2000-03-30 2002-08-01 Qualcomm Inc Procede et appareil de commande des transmissions d'un systeme de communication
US6745035B2 (en) 2000-06-23 2004-06-01 Matsushita Electric Industrial Co., Ltd. Communication terminal apparatus and transmission method of information necessary for communication using a downlink shared channel (DSCH)
EP1448005A1 (fr) * 2000-06-23 2004-08-18 Matsushita Electric Industrial Co., Ltd. Dispositif de terminal reseau, dispositif de station de base et procédé de communication radio
EP1204286A4 (fr) * 2000-06-23 2002-09-25 Matsushita Electric Ind Co Ltd Dispositif de terminal reseau, dispositif de station de base et procede de communication radio
EP1204286A1 (fr) * 2000-06-23 2002-05-08 Matsushita Electric Industrial Co., Ltd. Dispositif de terminal reseau, dispositif de station de base et procede de communication radio
CZ300787B6 (cs) * 2000-06-23 2009-08-12 Panasonic Corporation Komunikacní koncový prístroj a zpusob radiové komunikace
US6807425B2 (en) 2000-06-23 2004-10-19 Matsushita Electric Industrial Co., Ltd. Communication terminal apparatus
WO2002041523A3 (fr) * 2000-11-15 2002-09-12 Qualcomm Inc Procede et appareil permettant de reduire la puissance d'emission dans un systeme a debit binaire eleve
US6922389B1 (en) 2000-11-15 2005-07-26 Qualcomm, Incorporated Method and apparatus for reducing transmission power in a high data rate system
WO2002041523A2 (fr) * 2000-11-15 2002-05-23 Qualcomm Incorporated Procede et appareil permettant de reduire la puissance d'emission dans un systeme a debit binaire eleve
CN100425011C (zh) * 2000-11-15 2008-10-08 高通股份有限公司 在高数据速率系统中降低传输功率的方法和系统
EP2230861A3 (fr) * 2001-05-03 2012-07-04 Qualcomm Incorporated Procédé et dispositif de commande pour transmissions ascendantes dans un système de communication sans fil
WO2002091597A2 (fr) * 2001-05-03 2002-11-14 Qualcomm Incorporated Procede et dispositif de commande pour transmissions ascendantes dans un systeme de communication sans fil
WO2002091597A3 (fr) * 2001-05-03 2003-03-20 Qualcomm Inc Procede et dispositif de commande pour transmissions ascendantes dans un systeme de communication sans fil
US7042856B2 (en) 2001-05-03 2006-05-09 Qualcomm, Incorporation Method and apparatus for controlling uplink transmissions of a wireless communication system
WO2002098017A1 (fr) * 2001-06-01 2002-12-05 Nortel Networks Limited Procede de controle de puissance d'emission
US7228147B2 (en) 2001-06-01 2007-06-05 Nortel Networks Limited Method for controlling transmission power
FR2825540A1 (fr) * 2001-06-01 2002-12-06 Nortel Networks Ltd Procede de controle de puissance d'emission d'un terminal radio mobile, terminal mobile et station de base pour la mise en oeuvre de ce procede
WO2004102827A2 (fr) 2003-05-13 2004-11-25 Koninklijke Philips Electronics N.V. Systeme de communication
WO2004102827A3 (fr) * 2003-05-13 2005-01-27 Koninkl Philips Electronics Nv Systeme de communication
US7353040B2 (en) 2003-05-13 2008-04-01 Koninklijke Philips Electronics N.V. Closed-loop power controlled radio communication system
US7653016B2 (en) 2003-06-24 2010-01-26 Alcatel Lucent Method of controlling access to resources of a radiocommunication network and base station for implementing the method
US7965679B2 (en) 2005-05-11 2011-06-21 Nokia Corporation Method, apparatus and computer program providing signaling of zero/full power allocation for high speed uplink packet access (HSUPA)
WO2010039562A1 (fr) * 2008-09-23 2010-04-08 Qualcomm Incorporated Procédé et appareil de contrôle d’émission d’ue dans un système de communication sans fil
US8315217B2 (en) 2008-09-23 2012-11-20 Qualcomm Incorporated Method and apparatus for controlling UE emission in a wireless communication system
CN102237928A (zh) * 2010-05-07 2011-11-09 华为技术有限公司 一种信号的传输方法、装置和系统
WO2011137754A1 (fr) * 2010-05-07 2011-11-10 华为技术有限公司 Procédé, dispositif et système de transmission de signal
CN102237928B (zh) * 2010-05-07 2014-11-19 华为技术有限公司 一种信号的传输方法、装置和系统
US9363706B2 (en) 2010-05-07 2016-06-07 Huawei Technologies Co., Ltd. Method, device and system for signal transmission
WO2016089522A1 (fr) * 2014-12-04 2016-06-09 Qualcomm Incorporated Augmentation de débit de liaison montante via des dispositifs d'utilisateurs contraints à une puissance minimale

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