WO2012130017A1 - 上行接入开环功率控制的方法及装置 - Google Patents
上行接入开环功率控制的方法及装置 Download PDFInfo
- Publication number
- WO2012130017A1 WO2012130017A1 PCT/CN2012/071929 CN2012071929W WO2012130017A1 WO 2012130017 A1 WO2012130017 A1 WO 2012130017A1 CN 2012071929 W CN2012071929 W CN 2012071929W WO 2012130017 A1 WO2012130017 A1 WO 2012130017A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cap
- sta
- modulation
- coding mode
- uplink transmission
- Prior art date
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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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
-
- 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
- H04W52/10—Open loop power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- 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
- H04W52/12—Outer and inner loops
-
- 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
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
-
- 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]
- H04W52/262—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account adaptive modulation and coding [AMC] scheme
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- 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
- H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
- H04W52/226—TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table
-
- 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
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
Definitions
- the present invention belongs to the field of wireless communications, and in particular, to a method and an apparatus for uplink access open loop power control.
- wireless communication systems have been rapidly developed, such as wireless LAN technology WiFi based on the 802.11 standard, Bluetooth system based on 802.15, and Femto technology for indoor applications generated by mobile communication systems, etc. has been widely used.
- 802.11-based WiFi technology is one of the most widely used wireless network transmission technologies. Since the WiFi system uses the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) mechanism, the system efficiency is higher than that of the wireless resources. The root cause of this problem is that the CSMA/CA mechanism is a contention-based random multiple access mechanism between the central access point (CAP, Access Point) and the site (STA, Station), or Between different STAs, the CSMA/CA mechanism will compete for the right to use wireless resources, and at the same time compete for the wireless channel. At this time, collision occurs, resulting in waste of wireless resources. In order to avoid collisions, the CSMA/CA mechanism requires that the CAP or STA need to randomly retreat when competing for the wireless channel.
- CAP central access point
- STA Site
- 802.11 systems are less efficient. For example: 802. l lg system physical layer peak rate up to 54Mbps, but the TCP layer can not reach higher than 30Mbps in the big packet download service. Despite the above shortcomings, the 802.11 system is flexible and does not rely on a centralized control mechanism, so it can also achieve lower equipment costs.
- the Femto technology based on the 3GPP standard is a new technology for indoor coverage that has evolved from a mobile communication system. Based on the statistics of 3G systems, about 70% of data services occur indoors, so indoor high-rate data access solutions are especially important.
- Femto base stations called pico base stations, are compact and flexible to deploy. Due to the evolution from mobile communication systems, Femto base stations have almost inherited all the features of mobile communication systems. The Femto device only combines its limited coverage, fewer access users and other application scenarios, and reduces the processing power of the device, thereby reducing the cost of the device.
- the duplex mode like the mobile communication system, the Femto base station can be divided into two types of duplex mechanisms: FDD and TDD.
- the uplink and downlink carrier resources of the FDD are symmetric, and the asymmetric service characteristics of the uplink and downlink data traffic of the data service make the FDD system have a certain waste of resources when facing the data service.
- the TDD system works on the same carrier and allocates different radio resources to the uplink and downlink by dividing the time resources. Therefore, the FDD can better adapt to the asymmetric data services of the uplink and downlink services.
- the TDD duplex mode of the mobile communication system including the Femto system
- the static allocation of uplink and downlink resources, and the various types of data services that require different requirements, such as browsing web pages, mobile video, mobile games, etc. are difficult to realize business requirements and resources. Dynamic adaptation of the partition. Compared with Wi-Fi, Femto uses a scheduling-based centralized control mechanism, and there is no waste of radio resources caused by competition conflict and random backoff between the base station or CAP and the terminal or terminal, so the link efficiency is high.
- a method for uplink access open loop power control comprising:
- « is the maximum transmit power of the STA
- ⁇ is the uplink transmission path loss
- C/N is the carrier-to-noise ratio corresponding to the modulation and coding mode
- BW is the transmission bandwidth allocated by the CAP for the uplink transmission
- offset CAP is the offset adjustment of the CAP.
- the offset STA is the offset adjustment of the STA.
- the error adjustment of the CAP is obtained by parsing the message broadcast by the CAP.
- a method for uplink access open loop power control the method comprising:
- P STA vm, ⁇ P STA MAX , PL 0L + C/N + l0 g L0
- ⁇ — is the maximum transmit power of the STA
- P ⁇ is the uplink transmission path loss
- C/N is the carrier-to-noise ratio corresponding to the modulation and coding mode
- BW is the transmission bandwidth allocated by the CAP for the uplink transmission.
- the transmit power of the CAP is obtained by parsing the message broadcast by the CAP.
- the STA obtains the resource indication by parsing the control channel CCH of the currently received physical frame to determine the transmission bandwidth allocated by the CAP for the uplink transmission.
- the STA obtains a modulation and coding mode indication by parsing the CCH of the currently received physical frame, determines a modulation and coding mode, and searches for a correspondence table between a preset modulation and coding mode and a carrier-to-noise ratio. Determine the carrier-to-noise ratio corresponding to the current modulation and coding scheme.
- An apparatus for uplink access open loop power control the apparatus comprising:
- a first calculating unit configured to estimate an uplink transmission path loss according to the STA received signal power and the transmit power of the central access point CAP;
- a first determining unit configured to determine a transmission bandwidth allocated by the CAP for uplink transmission
- a second determining unit configured to determine a modulation and coding mode, and a carrier noise ratio requirement corresponding to the modulation and coding mode
- a third determining unit configured to determine a deviation adjustment of the CAP
- « is the maximum transmit power of the STA
- ⁇ is the uplink transmission path loss
- C/N is the carrier-to-noise ratio corresponding to the modulation and coding mode
- BW is the transmission bandwidth allocated by the CAP for the uplink transmission
- offset CAP is the offset adjustment of the CAP.
- the offset STA is the offset adjustment of the STA.
- the third determining unit obtains the offset adjustment of the CAP by parsing the message broadcast by the CAP.
- An apparatus for uplink access open loop power control comprising:
- a first calculating unit configured to estimate an uplink transmission path loss according to the STA received signal power and the transmit power of the central access point CAP;
- a first determining unit configured to determine a transmission bandwidth allocated by the CAP for uplink transmission
- a second determining unit configured to determine a modulation and coding mode, and a carrier noise ratio requirement corresponding to the modulation and coding mode
- the first calculating unit includes:
- a first parsing subunit configured to parse a transmit power of the CAP from a message broadcast by the CAP
- a calculating subunit configured to estimate an uplink transmission path loss according to the received signal power and the transmit power of the CAP.
- the first determining unit includes:
- a second parsing subunit configured to obtain a control channel CCH of the currently received physical frame Take resource indications
- a first determining subunit configured to determine, by using the resource indication, a transmission bandwidth allocated by the CAP for the uplink transmission.
- the second determining unit includes:
- a third parsing subunit configured to obtain a modulation coding mode indication by parsing a CCH of the currently received physical frame
- a second determining subunit configured to determine, by using the modulation and coding mode indication, a modulation and coding mode
- a third determining subunit configured to determine a modulation and coding mode by searching a correspondence table between a preset modulation and coding mode and a carrier to noise ratio Corresponding carrier-to-noise ratio.
- FIG. 1 is a flow chart of a method for uplink access open loop power control in the present invention
- Figure 2 is a reference model of the EUHT system
- Figure 3 shows the composition of the access system of the EUHT system
- FIG. 4 is a schematic diagram of a process of transmitting and receiving protocol data between a STA and a CAP;
- FIG. 5 is a schematic structural diagram of an apparatus for uplink access open loop power control according to the present invention. detailed description
- Step 11 Estimate the uplink transmission path loss based on the received signal power of the STA and the transmit power of the CAP.
- Step 12 Determine the transmission bandwidth and modulation and coding mode allocated by the CAP for the uplink transmission.
- Step 13 Determine the carrier-to-noise ratio requirement corresponding to the modulation and coding scheme.
- Step 14 Calculate the target value for adjusting the STA transmit power by the following formula:
- PSTA min ⁇ S73 ⁇ 4 — corpse ⁇ + C/N + 101 Ogl . ⁇ ;
- PL 0L is the uplink transmission path loss
- C / N is the carrier-to-noise ratio corresponding to the modulation and coding mode
- BW is the transmission bandwidth allocated by the CAP for the uplink transmission
- min is the maximum of the STA.
- the unit of the formula is dBm
- « is the maximum transmit power of the STA
- ⁇ is the uplink transmission path loss
- C/N is the carrier-to-noise ratio corresponding to the modulation and coding mode
- BW is the transmission bandwidth allocated by the CAP for the uplink transmission
- the offset adjustment of the offset CAP ⁇ CAP , o# «3 ⁇ 4 M is the deviation adjustment of the STA. among them.
- ⁇ is a value known to each STA.
- Figure 2 shows the reference model of the EUHT system. It mainly refers to the air interface reference model, including: the media access control (MAC) layer and the physical (PHY) layer.
- MAC media access control
- PHY physical
- the MAC layer includes an adaptation sublayer and a MAC sublayer.
- MSDU refers to information delivered as a unit between MAC Service Access Points (SAPs).
- SAPs MAC Service Access Points
- MAC Sublayer In addition to acting as a media access control function, it also includes management and control of the system and support for specific functions of the PHY layer.
- FIG. 2 PHY layer mainly provides PHY transmission mechanism for mapping MAC layer protocol data units (MPDUs) to corresponding physical channels, such as Orthogonal Frequency Division Multiplexing (OFDM) and Multiple Input Multiple Output (MIMO) technology.
- MPDU refers to the data unit exchanged between two peer MAC entities using PHY layer services.
- Figure 3 shows the access system of the EUHT system, including the central access point (CAP) and the station (STA), where the STA can be used for various data devices, such as: PDA, notebook, camera, camera, mobile phone, tablet Computer, pad, etc. As shown in FIG.
- STA1 and STA2 access the CAP through an air interface protocol, and the CAP establishes communication with an existing external network (such as IP bone network, Ethernet) through wired or wireless.
- the protocol composition of the CAP includes a MAC layer and a PHY layer.
- the STA protocol consists of an Application layer, a Transmission Control (TCP) layer, a Network (IP) layer, a MAC layer, and a PHY layer.
- Figure 4 shows the process of transmitting and receiving protocol data between the STA and the CAP.
- the STA wants to send data to the CAP, and the STA first passes the application data (such as VoIP, video, etc.).
- the application layer and the TCP/IP layer process and package, and send it to the IP adaptation sublayer in the form of IP packets, which are converted and mapped by the IP adaptation sublayer, and sent to the MAC sublayer.
- the MAC sublayer is fragmented, encrypted, and Operations such as framing, aggregation, etc. are sent to the PHY layer, which is ultimately mapped by the PHY to the wireless channel for data transmission.
- the execution body of the open loop power control is directly written as an STA.
- the execution entity may also be other entities located on the same side as the STA, or integrated in the STA. entity.
- the STA may obtain the transmit power of the CAP through a message broadcast by the CAP.
- the Broadcast Information Frame is a type of frame broadcast by the CAP, and the CAP will periodically broadcast the BCF.
- the CAP transmit power is n dBm.
- the BCF carries the CAP transmit power
- the STA can obtain the CAP transmit power after receiving the BCF.
- the STA can then estimate the uplink transmission path loss based on the received signal power and the CAP transmission power. For example, if the uplink and downlink symmetry are assumed, the received power of the current preamble or data portion can be measured and referenced to the CAP transmission power.
- the transmission bandwidth allocated by the CAP for the uplink transmission is indicated by a control channel (CCH) in the physical frame, and the STA can determine by analyzing the resource indication in the CCH.
- the current CAP allocates the transmission bandwidth for the uplink transmission.
- the STA obtains a modulation and coding mode indication by parsing the CCH of the currently received physical frame, and determines a modulation and coding mode, and then sets a correspondence table between the modulation and coding modes and a carrier-to-noise ratio according to a preset table. The way of determining the correspondence between the current modulation coding mode and the carrier-to-noise ratio.
- the STA may consider adding the fixed offset adjustment values of the STA side and the CAP side when calculating the target value of the adjusted transmit power.
- the fixed deviation adjustment value of the STA side and the CAP side is PL 0L + C/N + 101o gl .
- the calculation results of ( ) are added.
- determining the transmit power of the CAP estimating the uplink transmission path loss, determining the modulation and coding mode, determining the transmission bandwidth allocated by the CAP for the uplink transmission, and determining
- the method for modulating the carrier-to-noise ratio corresponding to the coding mode is the same as that in the foregoing embodiment of the first uplink access power control method, except that in the second uplink access power control method of the present invention, the STA may pass The CAP broadcast message, such as the aforementioned BCF frame, determines the offset adjustment of the CAP.
- FIG. 5 is a schematic structural diagram of an apparatus for uplink access open loop power control according to the present invention.
- the apparatus includes: a first calculating unit 51, a first determining unit 52, a second determining unit 53, and a second calculating unit 54.
- the first calculating unit 51 is configured to estimate an uplink transmission path loss according to the STA received signal power and the transmit power of the CAP.
- the first determining unit 52 is configured to determine a transmission bandwidth allocated by the CAP for uplink transmission.
- the second determining unit 53 is configured to determine a modulation and coding mode, and a carrier-to-noise ratio corresponding to the modulation and coding mode.
- the second calculating unit 54 is configured to calculate a target value of the STA transmit power adjustment by the following formula:
- P STA vm, ⁇ P STA MAX , PL 0L + C/N +
- P ⁇ the uplink transmission path loss
- C/N the carrier-to-noise ratio corresponding to the modulation and coding mode
- BW the transmission bandwidth allocated by the CAP for the uplink transmission.
- the first computing unit includes: a first parsing subunit and a computing subunit.
- the first parsing subunit is configured to parse the transmit power of the CAP from a message broadcast by the CAP.
- the calculating subunit is configured to estimate an estimated value of the uplink transmission path loss according to the STA received signal power and the transmit power of the CAP.
- the first determining unit comprises: a second parsing subunit and a definitive staging unit.
- the second parsing subunit is configured to obtain a resource indication by parsing a control channel CCH of a currently received physical frame.
- the first determining subunit is configured to determine, by using the resource indication, a transmission bandwidth allocated by the CAP for the uplink transmission.
- the second determining unit includes: a third parsing subunit, a second determining subunit, and a third determining subunit.
- the third parsing subunit is configured to obtain a modulation coding mode indication by parsing a CCH of a currently received physical frame.
- the second determining subunit is configured to determine, by using the modulation and coding mode indication, a modulation and coding mode.
- the third determining sub-unit is configured to determine a carrier-to-noise ratio corresponding to the modulation and coding mode by searching a correspondence table between a preset modulation and coding mode and a carrier-to-noise ratio.
- An alternative embodiment of the apparatus for the second uplink access open loop power control of the present invention is substantially the same as the alternative embodiment of the first uplink access open loop power device, except that the third determining unit is added for The message of the CAP broadcast is parsed to obtain the offset adjustment of the CAP.
- the device for performing open loop power control provided by the present invention may be located in the STA or may be a separate entity on the same side as the STA. It is understood that the specific order or hierarchy of steps in the process disclosed is an example of the exemplary method. Based on a design preference, it is understood that a particular order or hierarchy of steps in the process can be rearranged without departing from the scope of the disclosure.
- the appended method claims set forth the elements of the various steps in the exemplary order and are not intended to
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12763580.3A EP2693812A4 (en) | 2011-03-31 | 2012-03-05 | METHOD AND DEVICE FOR OPEN-LOOP UPGRADE PERFORMANCE CONTROL |
CN201280012538.3A CN103636267B (zh) | 2011-03-31 | 2012-03-05 | 上行接入开环功率控制的方法及装置 |
US14/008,616 US9295002B2 (en) | 2011-03-31 | 2012-03-05 | Method and device for open loop uplink access power control |
KR1020137028966A KR20140018962A (ko) | 2011-03-31 | 2012-03-05 | 업링크 액세스 오픈루프 파워제어방법 및 장치 |
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110081193.4 | 2011-03-31 | ||
CN201110081193 | 2011-03-31 | ||
CN201110081288 | 2011-03-31 | ||
CN201110081288.6 | 2011-03-31 | ||
CN201110130194.3 | 2011-05-19 | ||
CN201110130194 | 2011-05-19 | ||
CN201210026860.3 | 2012-02-07 | ||
CN201210026860 | 2012-02-07 | ||
CN201210038612.0 | 2012-02-17 | ||
CN201210038612 | 2012-02-17 |
Publications (1)
Publication Number | Publication Date |
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WO2012130017A1 true WO2012130017A1 (zh) | 2012-10-04 |
Family
ID=46929419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2012/071929 WO2012130017A1 (zh) | 2011-03-31 | 2012-03-05 | 上行接入开环功率控制的方法及装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9295002B2 (zh) |
EP (1) | EP2693812A4 (zh) |
KR (1) | KR20140018962A (zh) |
CN (2) | CN103636267B (zh) |
WO (1) | WO2012130017A1 (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101785712B1 (ko) * | 2009-10-23 | 2017-10-17 | 한국전자통신연구원 | 무선랜 시스템에서 송신 출력 제어 방법 및 장치 |
CN104683275B (zh) | 2013-11-27 | 2019-01-08 | 华为技术有限公司 | 一种前导序列生成方法、定时同步方法和设备 |
US9967827B2 (en) * | 2014-10-02 | 2018-05-08 | Futurewei Technologies, Inc. | System and method for power control |
WO2016173103A1 (zh) | 2015-04-30 | 2016-11-03 | 华为技术有限公司 | Wlan***的资源指示方法及装置 |
CN114126022B (zh) * | 2020-08-31 | 2023-08-29 | 成都鼎桥通信技术有限公司 | 调整发射功率的方法、装置、设备及存储介质 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101584129A (zh) * | 2007-01-09 | 2009-11-18 | 朗讯科技公司 | 反向链路功率控制 |
CN101632238A (zh) * | 2007-03-13 | 2010-01-20 | 高通股份有限公司 | 功率控制方法和装置 |
CN101741437A (zh) * | 2008-11-19 | 2010-06-16 | ***通信集团公司 | 一种上行功率控制方法、***及设备 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100869922B1 (ko) * | 2006-05-12 | 2008-11-21 | 삼성전자주식회사 | 광대역 무선 통신시스템에서 상향링크 전력 제어 장치 및방법 |
US8169933B2 (en) * | 2008-09-30 | 2012-05-01 | Spidercloud Wireless, Inc. | Dynamic topological adaptation |
-
2012
- 2012-03-05 US US14/008,616 patent/US9295002B2/en active Active
- 2012-03-05 KR KR1020137028966A patent/KR20140018962A/ko not_active Application Discontinuation
- 2012-03-05 CN CN201280012538.3A patent/CN103636267B/zh active Active
- 2012-03-05 CN CN2012100548163A patent/CN102932891A/zh active Pending
- 2012-03-05 WO PCT/CN2012/071929 patent/WO2012130017A1/zh active Application Filing
- 2012-03-05 EP EP12763580.3A patent/EP2693812A4/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101584129A (zh) * | 2007-01-09 | 2009-11-18 | 朗讯科技公司 | 反向链路功率控制 |
CN101632238A (zh) * | 2007-03-13 | 2010-01-20 | 高通股份有限公司 | 功率控制方法和装置 |
CN101741437A (zh) * | 2008-11-19 | 2010-06-16 | ***通信集团公司 | 一种上行功率控制方法、***及设备 |
Non-Patent Citations (1)
Title |
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See also references of EP2693812A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP2693812A4 (en) | 2014-12-17 |
KR20140018962A (ko) | 2014-02-13 |
EP2693812A1 (en) | 2014-02-05 |
US9295002B2 (en) | 2016-03-22 |
US20150085732A1 (en) | 2015-03-26 |
CN103636267A (zh) | 2014-03-12 |
CN103636267B (zh) | 2017-06-13 |
CN102932891A (zh) | 2013-02-13 |
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