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 PDF

Info

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
Application number
PCT/CN2012/071929
Other languages
English (en)
French (fr)
Inventor
鲍东山
潘立军
姚惠娟
周玉宝
于晓燕
雷俊
王竞
刘慎发
闫志刚
Original Assignee
北京新岸线无线技术有限公司
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.)
Filing date
Publication date
Application filed by 北京新岸线无线技术有限公司 filed Critical 北京新岸线无线技术有限公司
Priority to EP12763580.3A priority Critical patent/EP2693812A4/en
Priority to CN201280012538.3A priority patent/CN103636267B/zh
Priority to US14/008,616 priority patent/US9295002B2/en
Priority to KR1020137028966A priority patent/KR20140018962A/ko
Publication of WO2012130017A1 publication Critical patent/WO2012130017A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/10Open loop power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/12Outer and inner loops
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241TPC 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/26TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/262TPC 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/146Uplink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/22TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/226TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242TPC 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

Landscapes

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

Abstract

一种用于上行接入开环功率控制的方法,包括:依据站点STA接收信号功率及中心接入点CAP的发射功率估算上行传输路径损耗;确定CAP为上行传输分配的传输带宽、及CAP的偏差调整;确定调制编码方式、及确定调制编码方式对应的载波噪声比要求;计算调整STA发射功率的目标值。本发明还公开一种用于上行接入开环功率控制的装置。

Description

上行接入开环功率控制的方法及装置 本申请要求申请日为 2011年 3月 31 日, 申请号为 201110081288.6, 发 明名称为 "一种无线通信方法"的中国专利申请的优先权, 该在先申请的全部 内容均已在本申请中体现。
本申请要求申请日为 2011年 3月 31 日, 申请号为 201110081193.4, 发 明名称为 "一种无线通信方法、 ***与设备" 的中国专利申请的优先权, 该 在先申请的全部内容均已在本申请中体现。
本申请要求申请日为 2011年 5月 19 日, 申请号为 201110130194.3, 发 明名称为"一种通信***"的中国专利申请的优先权, 该在先申请的全部内容 均已在本申请中体现。
本申请要求申请日为 2012年 2月 7 日, 申请号为 201210026860.3, 发明 名称为 "上行接入开环功率控制的方法及装置"的中国专利申请的优先权, 该在 先申请的全部内容均已在本申请中体现。
本申请要求申请日为 2012年 2月 17 日, 申请号为 201210038612.0, 发明 名称为 "上行接入开环功率控制的方法及装置"的中国专利申请的优先权, 该在 先申请的全部内容均已在本申请中体现。 技术领域
本发明属于无线通信领域, 尤其涉及上行接入开环功率控制的方法及装 置。 背景技术 近年来, 无线通信***迅速发展, 诸如基于 802.11标准的无线局域网技 术 WiFi、 基于 802.15 的蓝牙 (Bluetooth ) ***以及由移动通信***^ "生而 来的面向室内应用的 Femto技术等等, 都得到了广泛的应用。
基于 802.11的 WiFi技术是当今使用最广的一种无线网络传输技术。 由 于 WiFi***釆用了载波侦听 /冲突避免 (CSMA/CA, Carrier Sense Multiple Access with Collision Avoidance )机制, ***效率较 ^ [氐,对无线资源 -浪费较大。 导致这一问题的根本原因是 CSMA/CA机制是一种基于竟争的随机多址接入 机制, 中心接入点 (CAP, Access Point ) 和站点 ( STA, Station ) 之间, 或 者不同 STA之间, 会通过 CSMA/CA机制竟争无线资源的使用权, 同时竟争 无线信道,此时就发生碰撞,导致无线资源的浪费。为了避免碰撞, CSMA/CA 机制要求 CAP或 STA在竟争无线信道时需要随机退避,在所有 CAP和 STA 都退避时, 无线信道虽有空闲, 但并未被使用, 这也是对无线信道的极大浪 费。 由于上述原因, 802.11 ***效率较低。 例如: 802. l lg***物理层峰值速 率可达 54Mbps, 但 TCP层在大数据包下载业务下可达速率不高于 30Mbps。 虽然存在上述缺点, 但 802.11 ***灵活, 不依赖集中控制机制, 因此也能够 实现较低的设备成本。
基于 3GPP标准的 Femto技术是从移动通信***演进而来的一种面向室 内覆盖的新技术。 基于对 3G***的数据统计, 大约 70%的数据业务都发生 在室内, 因此室内高速率数据接入方案就尤为重要。 Femto基站, 称为微微 基站, 体积小巧, 部署灵活。 由于从移动通信***演进而来, Femto基站几 乎继承了移动通信***的所有特点。 Femto设备只是结合其有限的覆盖范围, 较少的接入用户等应用场景特征,将设备处理能力降低,进而降低设备成本。 从双工方式考虑, 与移动通信***相同, Femto基站可分为 FDD与 TDD两 类双工机制。 FDD上下行载波资源对称, 而数据业务上下行数据流量非对称 的业务特征使得 FDD***面对数据业务时存在一定的资源浪费。 TDD*** 上下行链路工作在同一载波上, 通过划分时间资源为上下行链路分配不同的 无线资源, 因此较 FDD能够更好的适配上下行业务需求非对称的数据业务。 然而, 移动通信*** (包括 Femto ***) 的 TDD双工方式, 上下行资源静 态分配, 面对需求不同的各类数据业务, 例如: 浏览网页, 移动视频, 移动 游戏等,难以实现业务需求与资源划分的动态适配。与 Wi-Fi相比,由于 Femto 釆用了基于调度的集中控制机制,基站或 CAP和终端或者终端之间不存在由 于竟争冲突和随机退避导致的无线资源浪费, 因此链路效率较高。
针对各种无线通信***, 出于克服路径损耗等因素的考虑, 都存在进行 上行接入开环功率控制的需求。 发明内容 有鉴于此,本发明的一个目的是提供两种上行接入开环功率控制的方法。 本发明的另一个目的是提供两种上行接入开环功率控制的装置。
为了对披露的实施例的一些方面有一个基本的理解, 下面给出了筒单的 概括。 该概括部分不是泛泛评述, 也不是要确定关键 /重要组成元素或描绘 这些实施例的保护范围。 其唯一目的是用筒单的形式呈现一些概念, 以此作 为后面的评细说明的序言。
本发明技术方案是这样实现的:
一种上行接入开环功率控制的方法, 该方法包括:
依据 STA接收信号功率及中心接入点 CAP的发射功率估算上行传输路 径损耗;
确定 CAP为上行传输分配的传输带宽、 及 CAP的偏差调整; 确定调制编码方式、 及确定调制编码方式对应的载波噪声比要求; 通过如下公式计算调整 STA发射功率的目标值:
PSTA =
Figure imgf000005_0001
; 其 中 «为所述 STA的最大发射功率, 为上行传输路径损耗, C/ N为调 制编码方式对应的载波噪声比, BW为 CAP 为上行传输分配的传输带宽, offsetCAP为 CAP的偏差调整, offset STA为所述 STA的偏差调整。
可选的, 通过解析所述 CAP广播的消息, 得到所述 CAP的偏差调整。 一种上行接入开环功率控制的方法, 该方法包括:
依据 STA接收信号功率及中心接入点 CAP的发射功率估算上行传输路 径损耗;
确定 CAP为上行传输分配的传输带宽;
确定调制编码方式、 及确定调制编码方式对应的载波噪声比要求; 通过如下公式计算调整站点 STA发射功率的目标值:
PSTA = vm, {PSTA MAX , PL0L + C/N + l0 gL0
Figure imgf000005_0002
; 其中 ^— 为所述 STA的 最大发射功率, P ^为上行传输路径损耗, C/ N为调制编码方式对应的载波 噪声比, BW为 CAP为上行传输分配的传输带宽。
在以上两种方法中, 可选的, 通过解析所述 CAP广播的消息, 得到所述 CAP的发射功率。
在以上两种方法中, 可选的, STA通过解析当前接收的物理帧的控制信 道 CCH获取资源指示, 以确定所述 CAP为上行传输分配的传输带宽。
在以上两种方法中, 可选的, STA 通过解析当前接收的物理帧的 CCH 获取调制编码方式指示, 确定调制编码方式, 并通过查找预设的调制编码方 式与载波噪声比的对应关系表, 确定当前调制编码方式对应的载波噪声比。 一种上行接入开环功率控制的装置, 该装置包括:
第一计算单元, 用于依据 STA接收信号功率及中心接入点 CAP的发射 功率估算上行传输路径损耗;
第一确定单元, 用于确定 CAP为上行传输分配的传输带宽;
第二确定单元, 用于确定调制编码方式、 及调制编码方式对应的载波噪 声比要求;
第三确定单元, 用于确定 CAP的偏差调整;
第二计算单元, 用于通过如下公式计算 STA发射功率调整的目标值: PSTA =
Figure imgf000006_0001
; 其 中 «为所述 STA的最大发射功率, 为上行传输路径损耗, C/ N为调 制编码方式对应的载波噪声比, BW为 CAP 为上行传输分配的传输带宽, offsetCAP为 CAP的偏差调整, offset STA为所述 STA的偏差调整。
可选的, 所述第三确定单元通过解析所述 CAP 广播的消息, 得到所述 CAP的偏差调整。
一种上行接入开环功率控制的装置, 该装置包括:
第一计算单元, 用于依据 STA接收信号功率及中心接入点 CAP的发射 功率估算上行传输路径损耗;
第一确定单元, 用于确定 CAP为上行传输分配的传输带宽;
第二确定单元, 用于确定调制编码方式、 及调制编码方式对应的载波噪 声比要求;
第二计算单元, 用于通过如下公式计算 STA发射功率调整的目标值: PSTA = vm, {PSTA MAX , PL0L + C/N + l0 gL0
Figure imgf000006_0002
; 其中 为所属 STA的 最大发射功率, P ^为上行传输路径损耗, C/ N为调制编码方式对应的载波 噪声比, BW为 CAP为上行传输分配的传输带宽。
在以上两种装置中, 可选的, 所述第一计算单元包括:
第一解析子单元, 用于从 CAP广播的消息中解析出所述 CAP的发射功 率;
计算子单元,用于依据接收信号功率及所述 CAP的发射功率估算上行传 输路径损耗。
在以上两种装置中, 可选的, 所述第一确定单元包括:
第二解析子单元, 用于通过解析当前接收的物理帧的控制信道 CCH 获 取资源指示;
第一确定子单元, 用于利用所述资源指示, 确定 CAP为上行传输分配的 传输带宽。
在以上两种装置中, 可选的, 所述第二确定单元包括:
第三解析子单元, 用于通过解析当前接收的物理帧的 CCH 获取调制编 码方式指示;
第二确定子单元,用于利用所述调制编码方式指示,确定调制编码方式; 第三确定子单元, 用于通过查找预设的调制编码方式与载波噪声比的对 应关系表, 确定调制编码方式对应的载波噪声比。
为了上述以及相关的目的, 一个或多个实施例包括后面将详细说明并在 权利要求中特别指出的特征。下面的说明以及附图评细说明某些示例性方面, 并且其指示的仅仅是各个实施例的原则可以利用的各种方式中的一些方式。 其它的益处和新颖性特征将随着下面的详细说明结合附图考虑而变得明显, 所公开的实施例是要包括所有这些方面以及它们的等同。 附图说明
图 1是本发明中第一种上行接入开环功率控制的方法流程图;
图 2是 EUHT***的参考模型;
图 3是 EUHT***的接入***组成;
图 4是 STA和 CAP之间协议数据的发送和接收的过程示意图; 图 5是本发明中第一种上行接入开环功率控制的装置的结构示意图。 具体实施方式
以下描述和附图充分地示出本发明的具体实施方案, 以使本领域的技术 人员能够实践它们。 其他实施方案可以包括结构的、 逻辑的、 电气的、 过程 的以及其他的改变。 实施例仅代表可能的变化。 除非明确要求, 否则单独的 组件和功能是可选的, 并且操作的顺序可以变化。 一些实施方案的部分和特 征可以被包括在或替换其他实施方案的部分和特征。 本发明的实施方案的范 围包括权利要求书的整个范围, 以及权利要求书的所有可获得的等同物。 在 本文中, 本发明的这些实施方案可以被单独地或总地用术语 "发明" 来表示, 这仅仅是为了方便, 并且如果事实上公开了超过一个的发明, 不是要自动地 限制该应用的范围为任何单个发明或发明构思。 图 1是本发明中第一种上行接入开环功率控制的方法流程图, 该流程包 括 ··
步骤 11 : 依据 STA接收信号功率及 CAP的发射功率估算上行传输路径 损耗。
步骤 12: 确定 CAP为上行传输分配的传输带宽、 及调制编码方式。 步骤 13: 确定调制编码方式对应的载波噪声比要求。
步骤 14: 通过如下公式计算调整 STA发射功率的目标值:
PSTA = min { S7¾— 尸^ + C/N + 101Ogl。^ ;其中 为所述 STA的最 大发射功率, PL0L为上行传输路径损耗, C / N为调制编码方式对应的载波噪 声比, BW为 CAP为上行传输分配的传输带宽, min指取 STA的最大发射功 率和第二部分相加结果的最小值。 该公式的单位是 dBm
本发明第二种上行接入开环功率控制的方法中, 流程与上述步骤 11〜步 骤 14相同, 只是步骤 14中使用如下公式计算调整 STA发射功率的目标值: PSTA =
Figure imgf000008_0001
; 其 中 «为所述 STA的最大发射功率, 为上行传输路径损耗, C/ N为调 制编码方式对应的载波噪声比, BW为 CAP 为上行传输分配的传输带宽, offsetCAP ^ CAP的偏差调整, o#«¾M为所述 STA的偏差调整。 其中。^^^为 每个 STA已知的值。
下面给出本发明方法的可选实施例, 这些实施例均以新定义的增强型超 高速无线局域网 (EUHT ) ***为应用场景, 但这种应用场景仅为具体的举 例。
图 2为 EUHT***的参考模型 主要是指空中接口参考模型, 包括: 媒 体接入控制 ( MAC ) 层和物理 (PHY ) 层, 各层的主要功能筒述如下:
① MAC层包括适配子层和 MAC子层。
适配子层: 主要提供外部网络数据和 MAC层艮务协议单元 (MSDU ) 之间的映射和转换的功能。 MSDU指 MAC服务访问点 (SAP )之间作为单 元而交付的信息。
MAC 子层: 除了担当媒体接入控制功能外, 还包括对***的管理和控 制以及对 PHY层的特定功能的支持。
② PHY层: 主要提供将 MAC层协议数据单元( MPDU )映射到相应的 物理信道的 PHY传输机制,例如正交频分复用( OFDM )和多入多出( MIMO ) 技术。 MPDU指两个对等 MAC实体之间利用 PHY层服务所交换的数据单元。 图 3 为 EUHT ***的接入***组成, 包括中心接入点 (CAP ) 和站点 ( STA ), 其中 STA可以为各种数据设备, 例如: PDA、 笔记本、 照相机、 才聂像机、 手机、 平板电脑、 pad等。 如图 3所示, STA1和 STA2 通过空中接 口协议接入 CAP , CAP通过有线或者无线与现有的外部网络 (如 IP骨千网、 以太网)建立通信。 其中 CAP的协议组成包括 MAC层和 PHY层。 STA协 议组成包括应用 (Application ) 层、 传输控制 (TCP ) 层、 网络 (IP ) 层、 MAC层和 PHY层。
基于图 3所示的协议组成, 图 4给出了 STA和 CAP之间协议数据的发 送和接收的过程, 例如: STA想发送数据给 CAP , STA首先将应用数据(如 VoIP , 视频等) 经过应用层、 TCP/IP层处理并打包, 以 IP分组的形式发送 给 IP适配子层, 由 IP适配子层进行转换和映射, 发送给 MAC子层, MAC 子层经过分片、 加密、 成帧、 聚合等操作, 发给 PHY层, 最终由 PHY映射 到无线信道上进行数据传输。
在以下针对本发明方法举出的实施例中, 均将开环功率控制的执行主体 直接写为 STA, 实际上该执行主体也可以是与 STA位于同侧的其他实体, 或 者集成在 STA内部的实体。
针对本发明第一种上行接入功率控制的方法举出以下可选的实施例。 在一些可选的实施例中, STA可以通过 CAP广播的消息得到 CAP的发 射功率。
在 EUHT***中, 广播信息帧 ( BCF ) 是 CAP广播的一种帧, CAP将 周期性广播 BCF。
BCF的帧体中可以具有 8比特的 CAP发射功率字段, 指示 CAP的当前 发射功率, 该字段对应带符号的十进制数为 n, n=- 128〜127 (负数部分以补 码形式表示;): CAP发射功率为 n dBm。
可以看出, BCF中携带了 CAP发射功率, STA在接收到 BCF后, 可以 从中获取 CAP发射功率。 然后 STA可以依据接收信号功率及 CAP发射功率 估算上行传输路径损耗, 例如, 在假定上下行链路对称的情况下, 可以通过 测量当前前导或数据部分的接收功率, 并参考 CAP发射功率得到。
在一些可选的实施例中, CAP为上行传输分配的传输带宽通过物理帧中 的控制信道 (CCH ) 指示, STA通过解析 CCH中的资源指示, 就可以确定 当前 CAP为上行传输分配的传输带宽。
在一些可选的实施例中, STA通过解析当前接收的物理帧的 CCH获取 调制编码方式指示, 确定调制编码方式, 然后 艮据预先设置调制编码方式与 载波噪声比的对应关系表, 通过查表的方式确定当前调制编码方式与载波噪 声比的对应关系。
在一些可选的实施例中, 如果 STA侧和 CAP侧各自具有规定的固定偏 差调整值, 则 STA在计算调整发射功率的目标值时, 可以考虑将 STA侧和 CAP侧的固定偏差调整值加入计算公式中, 即将 STA侧和 CAP侧的固定偏 差调整值与 PL0L + C/N + 101ogl。( )的计算结果相加。
针对本发明第二种上行接入功率控制的方法, 在可选的实施例中, 确定 CAP 的发射功率、 估算上行传输路径损耗、 确定调制编码方式、 确定 CAP 为上行传输分配的传输带宽及确定调制编码方式对应的载波噪声比的方法, 与前述第一种上行接入功率控制方法的可选实施例中的相同, 只是在本发明 第二种上行接入功率控制的方法中, STA可以通过 CAP广播的消息, 例如 前述 BCF帧, 来确定 CAP的偏差调整。
图 5为本发明中第一种上行接入开环功率控制的装置的结构示意图, 该 装置包括: 第一计算单元 51、 第一确定单元 52、 第二确定单元 53和第二计 算单元 54。
所述第一计算单元 51, 用于依据 STA接收信号功率及 CAP的发射功率 估算上行传输路径损耗。
所述第一确定单元 52, 用于确定 CAP为上行传输分配的传输带宽。 所述第二确定单元 53 , 用于确定调制编码方式、 及调制编码方式对应的 载波噪声比。
所述第二计算单元 54, 用于通过如下公式计算 STA发射功率调整的目 标值:
PSTA = vm, {PSTA MAX ,PL0L + C/N +
Figure imgf000010_0001
; 其中 为所属 STA的 最大发射功率, P ^为上行传输路径损耗, C/ N为调制编码方式对应的载波 噪声比, BW为 CAP为上行传输分配的传输带宽。
本发明中第二种上行接入开环功率控制的装置, 结构与图 5所示的基本 相同,只是其中的第二计算单元通过如下公式计算站点 STA发射功率调整的 目标值 ·· PSTA = mm {PSTA MAX, PLOL + C/N + \Ologw(BW) + offsetCAP + offsetSTA\; 其中 «为所述 STA的最大发射功率, 为上行传输路径损耗, C/ N为调 制编码方式对应的载波噪声比, BW为 CAP 为上行传输分配的传输带宽, offsetCAP为 CAP的偏差调整, offset STA为所述 STA的偏差调整。 并且本发明第 二种上行接入开环功率控制的装置中还包括第三确定单元, 用于确定 CAP 的偏差调整。
下面给出本发明第一种上行接入开环功率控制的装置的可选实施例。 在一些可选的实施例中, 所述第一计算单元包括: 第一解析子单元和计 算子单元。
所述第一解析子单元, 用于从 CAP广播的消息中解析出所述 CAP的发 射功率。
所述计算子单元, 用于依据 STA接收信号功率及所述 CAP的发射功率 估算上行传输路径损耗的估计值。
在一些可选的实施例中, 所述第一确定单元包括: 第二解析子单元和确 定子单元。
所述第二解析子单元,用于通过解析当前接收的物理帧的控制信道 CCH 获取资源指示。
所述第一确定子单元, 用于利用所述资源指示, 确定 CAP为上行传输分 配的传输带宽。
在一些可选的实施例中, 所述第二确定单元包括: 第三解析子单元、 第 二确定子单元和第三确定子单元。
所述第三解析子单元, 用于通过解析当前接收的物理帧的 CCH 获取调 制编码方式指示。
所述第二确定子单元, 用于利用所述调制编码方式指示, 确定调制编码 方式。
所述第三确定子单元, 用于通过查找预设的调制编码方式与载波噪声比 的对应关系表, 确定调制编码方式对应的载波噪声比。
本发明第二种上行接入开环功率控制的装置的可选实施例, 与第一种上 行接入开环功率的装置的可选实施例基本相同, 只是增加第三确定单元, 用 于通过解析所述 CAP广播的消息, 得到所述 CAP的偏差调整。
本发明提供的进行开环功率控制的装置, 可以位于 STA中, 也可以是与 STA同侧的单独实体。 应该明白,公开的过程中的步骤的特定顺序或层次是示例性方法的实例。 基于设计偏好, 应该理解, 过程中的步骤的特定顺序或层次可以在不脱离本 公开的保护范围的情况下得到重新安排。 所附的方法权利要求以示例性的顺 序给出了各种步骤的要素, 并且不是要限于所述的特定顺序或层次。
在上述的详细描述中, 各种特征一起组合在单个的实施方案中, 以筒化 本公开。 不应该将这种公开方法解释为反映了这样的意图, 即, 所要求保护 的主题的实施方案需要清楚地在每个权利要求中所陈述的特征更多的特征。 相反, 如所附的权利要求书所反映的那样, 本发明处于比所公开的单个实施 方案的全部特征少的状态。 因此, 所附的权利要求书特此清楚地被并入详细 描述中, 其中每项权利要求独自作为本发明单独的优选实施方案。
上文的描述包括一个或多个实施例的举例。 当然, 为了描述上述实施例 而描述部件或方法的所有可能的结合是不可能的, 但是本领域普通技术人员 应该认识到, 各个实施例可以做进一步的组合和排列。 因此, 本文中描述的 实施例旨在涵盖落入所附权利要求书的保护范围内的所有这样的改变、 修改 和变型。 此外, 就说明书或权利要求书中使用的术语 "包含", 该词的涵盖方 式类似于术语 "包括", 就如同 "包括," 在权利要求中用作 #†接词所解释的 那样。 此外, 使用在权利要求书的说明书中的任何一个术语 "或者" 是要表 示 "非排它性的或者"。

Claims

权 利 要 求 书
1.一种上行接入开环功率控制的方法, 其特征在于, 该方法包括: 依据站点 STA接收信号功率及中心接入点 CAP的发射功率估算上行传 输路径损耗;
确定 CAP为上行传输分配的传输带宽、 及 CAP的偏差调整; 确定调制编码方式、 及确定调制编码方式对应的载波噪声比要求; 通过如下公式计算调整 STA发射功率的目标值:
PSTA =
Figure imgf000013_0001
; 其 中 «为所述 STA的最大发射功率, 为上行传输路径损耗, C/ N为调 制编码方式对应的载波噪声比, BW为 CAP 为上行传输分配的传输带宽, offsetCAP为 CAP的偏差调整, offset STA为所述 STA的偏差调整。
2. 如权利要求 1所述的方法, 其特征在于, 通过解析所述 CAP广播的 消息, 得到所述 CAP的偏差调整。
3.一种上行接入开环功率控制的方法, 其特征在于, 该方法包括: 依据站点 STA接收信号功率及中心接入点 CAP的发射功率估算上行传 输路径损耗;
确定 CAP为上行传输分配的传输带宽;
确定调制编码方式、 及确定调制编码方式对应的载波噪声比要求; 通过如下公式计算调整 STA发射功率的目标值:
PSTA = vm, {PSTA MAX , PL0L + C/N + l0 gL0
Figure imgf000013_0002
; 其中 ^— 为所述 STA的 最大发射功率, P ^为上行传输路径损耗, C/ N为调制编码方式对应的载波 噪声比, BW为 CAP为上行传输分配的传输带宽。
4. 如权利要求 1或 3所述的方法, 其特征在于, 通过解析所述 CAP广 播的消息, 得到所述 CAP的发射功率。
5. 如权利要求 1或 3所述的方法, 其特征在于, STA通过解析当前接收 的物理帧的控制信道 CCH获取资源指示, 以确定所述 CAP为上行传输分配 的传输带宽。
6. 如权利要求 1或 3所述的方法, 其特征在于, STA通过解析当前接收 的物理帧的 CCH 获取调制编码方式指示, 确定调制编码方式, 并通过查找 预设的调制编码方式与载波噪声比的对应关系表, 确定当前调制编码方式对 应的载波噪声比。
7.一种上行接入开环功率控制的装置, 其特征在于, 该装置包括: 第一计算单元, 用于依据站点 STA接收信号功率及中心接入点 CAP的 发射功率估算上行传输路径损耗;
第一确定单元, 用于确定 CAP为上行传输分配的传输带宽;
第二确定单元, 用于确定调制编码方式、 及调制编码方式对应的载波噪 声比要求;
第三确定单元, 用于确定 CAP的偏差调整;
第二计算单元, 用于通过如下公式计算 STA发射功率调整的目标值: PSTA =
Figure imgf000014_0001
; 其 中 «为所述 STA的最大发射功率, 为上行传输路径损耗, C/ N为调 制编码方式对应的载波噪声比, BW为 CAP 为上行传输分配的传输带宽, offsetCAP为 CAP的偏差调整, offset STA为所述 STA的偏差调整。
8. 如权利要求 7所述的装置, 其特征在于, 所述第三确定单元通过解析 所述 CAP广播的消息, 得到所述 CAP的偏差调整。
9.一种上行接入开环功率控制的装置, 其特征在于, 该装置包括: 第一计算单元, 用于依据站点 STA接收信号功率及中心接入点 CAP的 发射功率估算上行传输路径损耗;
第一确定单元, 用于确定 CAP为上行传输分配的传输带宽;
第二确定单元, 用于确定调制编码方式、 及调制编码方式对应的载波噪 声比要求;
第二计算单元, 用于通过如下公式计算 STA发射功率调整的目标值: PSTA = vm, {PSTA MAX , PL0L + C/N + l0 gL0
Figure imgf000014_0002
; 其中 为所属 STA的 最大发射功率, P ^为上行传输路径损耗, C/ N为调制编码方式对应的载波 噪声比, BW为 CAP为上行传输分配的传输带宽。
10. 如权利要求 7或 9所述的装置, 其特征在于, 所述第一计算单元包 括 ··
第一解析子单元, 用于从 CAP广播的消息中解析出所述 CAP的发射功 率;
计算子单元, 用于依据 STA接收信号功率及所述 CAP的发射功率估算 上行传输路径损耗。
11. 如权利要求 7或 9所述的装置, 其特征在于, 所述第一确定单元包 括 ··
第二解析子单元, 用于通过解析当前接收的物理帧的控制信道 CCH 获 取资源指示;
第一确定子单元, 用于利用所述资源指示, 确定 CAP为上行传输分配的 传输带宽。
12. 如权利要求 7或 9所述的装置, 其特征在于, 所述第二确定单元包 括 ··
第三解析子单元, 用于通过解析当前接收的物理帧的 CCH 获取调制编 码方式指示;
第二确定子单元,用于利用所述调制编码方式指示,确定调制编码方式; 第三确定子单元, 用于通过查找预设的调制编码方式与载波噪声比的对 应关系表, 确定调制编码方式对应的载波噪声比。
PCT/CN2012/071929 2011-03-31 2012-03-05 上行接入开环功率控制的方法及装置 WO2012130017A1 (zh)

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
WO2012130017A1 true WO2012130017A1 (zh) 2012-10-04

Family

ID=46929419

Family Applications (1)

Application Number Title Priority Date Filing Date
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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)

* Cited by examiner, † Cited by third party
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Title
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

Similar Documents

Publication Publication Date Title
JP6643383B2 (ja) 無線ローカルエリアネットワークにおける省電力のための方法および装置
JP6353098B2 (ja) スモールデータパケットの転送に関連付けられたオーバヘッドの低減
TWI706688B (zh) 在WLANs中上鏈多使用者傳輸分類及消除
US11700666B2 (en) Method and apparatus for triggering transmission carrier selection in wireless communication system
JP6014246B2 (ja) 効率的な媒体アクセス制御(mac)ヘッダ
EP2992712A1 (en) Method for selecting an entity based on a total link quality
WO2012130019A1 (zh) 业务流建立方法和装置、及业务流修改方法和装置
JP2016528795A (ja) チャネルアクセスまたは送信パラメータの動的な適応のためのシステムおよび方法
WO2015158004A1 (zh) 一种功率配置方法、用户设备及基站
WO2012130017A1 (zh) 上行接入开环功率控制的方法及装置
WO2012130027A1 (zh) 用于接入无线网络的方法及装置
WO2013126666A2 (en) Architecture of multi-anchor systems
WO2012155785A1 (zh) 上行传输开环功率控制方法及装置
WO2012155557A1 (zh) 一种异构网络中业务流的同步传输方法及***
US8121067B2 (en) Quality of service provisioning using periodic channel time allocation
Ben-Othman et al. 802.11 Qos Cross-Layer Protocol Based Propagation Conditions Adaptation

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12763580

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20137028966

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2012763580

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 14008616

Country of ref document: US