WO2008028369A1 - Système et procédé destinés à améliorer la commande de puissance de synchronisation en boucle fermée et la transmission de l'information d'ordonnancement assistante d'une liaison montante - Google Patents

Système et procédé destinés à améliorer la commande de puissance de synchronisation en boucle fermée et la transmission de l'information d'ordonnancement assistante d'une liaison montante Download PDF

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Publication number
WO2008028369A1
WO2008028369A1 PCT/CN2006/003790 CN2006003790W WO2008028369A1 WO 2008028369 A1 WO2008028369 A1 WO 2008028369A1 CN 2006003790 W CN2006003790 W CN 2006003790W WO 2008028369 A1 WO2008028369 A1 WO 2008028369A1
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WO
WIPO (PCT)
Prior art keywords
uplink
channel
enhanced
synchronization
information
Prior art date
Application number
PCT/CN2006/003790
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English (en)
Chinese (zh)
Inventor
Hua Rui
Yincheng Zhang
Hui Chen
Hu Liu
Peng Geng
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Zte Corporation
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Publication date
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Publication of WO2008028369A1 publication Critical patent/WO2008028369A1/fr

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    • 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
    • H04W52/08—Closed loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Definitions

  • the present invention relates to a time division code division multiple access (TD-CDMA) system, and particularly relates to an uplink enhancement technology supporting uplink in a time division code division multiple access wireless communication system.
  • BACKGROUND OF THE INVENTION In a third generation mobile communication system, in order to provide higher rate uplink packet services and improve spectrum utilization efficiency, 3GPP (3rd Generation Partnership Project) in WCDMA (Wideband Code Division Multiple Access) and TD-CDMA systems
  • WCDMA Wideband Code Division Multiple Access
  • TD-CDMA Wideband Code Division Multiple Access
  • the specification introduces the High Speed Uplink Packet Access (HSUPA) feature, that is, the uplink enhancement feature.
  • HSUPA High Speed Uplink Packet Access
  • the network processing time is reduced by introducing adaptive modulation and modulation (AMC), hybrid automatic retransmission request (HARQ: Hybrid Automatic Retransmission Request), and Node B (Node B) controlled scheduling techniques. Delay, thereby increasing the rate of uplink packet services and improving spectrum utilization efficiency.
  • the HSUPA system is also known as the uplink augmentation system and is called the E-DCH system.
  • the enhanced uplink data is carried on the newly introduced dedicated transport channel E-DCH.
  • Each UE User Equipment
  • an E-DCH channel is newly introduced, which is carried by the E-PUCH channel (Enhanced Uplink Physical Channel) of the physical layer.
  • the scheduling entity located in the MAC-e entity of the Node B is responsible for the allocation of the E-PUCH physical resources, wherein the E-TFC (Enhanced Transport Format Combination) selects the entity authorization information to select the transport block length for the new data; the multiplexing and TSN setting entity According to the selection result of the E-TFC selecting entity, it is responsible for putting multiple MAC-d PDUs (protocol data units) from one logical channel into the MAC-es PDU, and multiplexing one or more MAC-es PDUs into one In the MAC-e PDU, a HARQ Profile is generated (the hybrid automatic repeat request service list); the scheduling access entity is responsible for obtaining and normalizing the scheduling related signaling information; the HARQ entity is responsible for the HARQ protocol related processing, including the MAC-e PDU storage and retransmission
  • a part of the MAC-e uplink signaling is carried by two newly introduced uplink control channels, and the main transmission Input HARQ (Hybrid Automatic Repeat Request;), auxiliary scheduling related information, these channels are terminated at Node B.
  • the E-UCCH (E-DCH uplink control channel) is included for transmitting E-TFCI and HARQ related information.
  • the E-UCCH information may be transmitted in one or more time slots of the E-DCH and multiplexed with the E-DCH onto a set of E-PUCHs within the TTI.
  • E-RUCCH E-DCH Random Access Uplink Control Channel
  • the E-RUCCH can be mapped to a random access physical channel resource and can share some resources with the existing PRACH.
  • E-AGCH E-DCH (Enhanced Dedicated Channel) Absolute Grant Channel)
  • E-HICH E-DCH Hybrid Automatic Repeat Transmission Confirmation Indicator Channel
  • the E-HCH is used to transmit the authorization information
  • the E-HICH is used to carry the uplink E-DCH HARQ indication information.
  • the RNC Radio Network Controller
  • the RNC configures the E-PUCH resource of the unscheduled transmission, and the UE can transmit the E-DCH through the resource at any time as long as the resource is used.
  • the E-PUCH resource pool is allocated by the RNC, and the UE allocates resources through the E-RUCCH or E-DCH request, and then the Node B dynamically configures the E-PUCH resources that each UE schedules to transmit. Only the Node B passes the E- When the AGCH channel authorizes the UE to use certain scheduled E-PUCH resources, the UE can send the E-DCH through the resource.
  • the information related to the transmission assist scheduling may be transmitted in the E-DCH channel; there is no E-AGCH resource authorization and there is no non-scheduled resource allocation.
  • the information When transmitting the information related to the secondary scheduling, the information must be transmitted through the E-RUCCH, and the mechanism initiated by the E-RUCCH is the same as the PRACH (Packet Random Access Channel), using the standard 3GPP transport channel processing flow, but the CRC (cyclic redundancy) The bits of the check) need to be reversed in polarity, so that the Node B can identify the E-RUCCH and the PRACH.
  • PRACH Packet Random Access Channel
  • CRC cyclic redundancy
  • the bits of the check need to be reversed in polarity, so that the Node B can identify the E-RUCCH and the PRACH.
  • the HSUPA technology in the above TD-CDMA system cannot be directly used in the TD-SCDMA system. Because this method does not consider the synchronization hold problem of the uplink channel.
  • the uplink synchronization process for the E-PUCH is controlled by the SS (synchronization offset) command carried in the E-AGCH, and the E-AGCH can only carry the uplink synchronization control information of one UE, and Its allocation is related to the scheduling policy of the Node B, which causes the DB B and the UE to maintain a closed-loop synchronization process, forcing the UE to continuously initiate the resynchronization process.
  • the UE does not have the E-AGCH resource grant and there is no non-scheduled resource allocation, in order to transmit the information related to the auxiliary scheduling, a similar and random access procedure must be initiated through the E-RUCCH, and the process further includes the UE transmitting the uplink pilot code.
  • the system and method for uplink enhanced closed-loop synchronous power control and auxiliary scheduling information transmission of the present invention aims to provide an HSUPA technology in a time division code division multiple access system to simultaneously support uplink. Synchronous power control and auxiliary scheduling information transmission.
  • a system for uplink enhanced closed-loop synchronous power control and auxiliary scheduling information transmission comprising: a MAC-es/e entity, wherein the MAC-es/e entity includes a multiplexing and transmitting sequence number Setting an entity, the system further includes: an uplink enhanced periodic split channel, configured to transmit auxiliary scheduling information and uplink high-level signaling information, where the channel resource is only allocated to user equipments that have no non-scheduled resources, and the related allocation information is used for uplink high-layer signaling.
  • the enhanced uplink shared synchronization channel which is used to carry the uplink enhanced uplink physical channel and the uplink enhanced periodic split channel closed-loop synchronization and power information; wherein the MAC-es/e entity further includes: enhanced transport format combination selection and
  • the synchronization control entity obtains uplink synchronization control information of the user equipment by enhancing the uplink shared synchronization channel, and transmits the information to the multiplexing and transmission sequence number setting entity.
  • the auxiliary scheduling information access control entity obtains the auxiliary scheduling information by using the uplink enhanced periodic split channel and normalizes the obtained auxiliary scheduling information.
  • the method for uplink enhanced closed-loop synchronous power control includes: a method for enhancing closed-loop synchronous power control in a time-division code division multiple access system, which is characterized by:
  • the radio network controller allocates a scheduling resource to the Node B, and allocates an uplink synchronization control physical channel and an uplink enhanced periodic split channel resource to the user equipment that only schedules the resource, where the uplink synchronization control physical channel is used to carry the uplink synchronization command word of the user. And an uplink enhanced periodic split channel power control command word, where the uplink enhanced periodic split channel is used to carry auxiliary scheduling information;
  • the user equipment completes the "synchronous establishment" and the uplink open loop power control through a random access process, an open loop synchronization process, and an open loop power control process;
  • the Node B completes the uplink scheduling of the user equipment or the closed-loop synchronization of the non-scheduled enhanced uplink physical channel and the uplink enhanced periodic split channel by enhancing the synchronization offset command in the uplink shared synchronization channel;
  • the Node B completes the closed loop power control of the uplink channel of the user equipment by enhancing the power control command in the uplink shared synchronization channel.
  • the step (3) is specifically: the step (3) is specifically:
  • the Node B measures the arrival time of the enhanced uplink physical channel or the uplink enhanced periodic split channel, generates a synchronization offset command, and periodically sends the command to the user equipment by the physical layer common control channel; (32) the user equipment according to The synchronization offset command adjusts the transmission advance amount of the enhanced uplink physical channel or the uplink enhanced periodic split channel, and completes the upper closed loop synchronization.
  • the step (4) is specifically:
  • a method for periodically transmitting auxiliary scheduling information in a time division code division multiple access system comprising:
  • the radio network controller allocates a scheduling resource to the Node B, and allocates an uplink synchronization control physical channel and an uplink enhanced periodic split channel resource to the user equipment that only schedules the resource, where the uplink synchronization control physical channel is used to carry the uplink synchronization command word of the user. And an uplink enhanced periodic split channel power control command word, where the uplink enhanced periodic split channel is used to carry auxiliary scheduling information;
  • the user equipment determines whether it is necessary to upload the auxiliary scheduling information. If it needs to upload, it transmits through the allocated uplink enhanced period split channel; if not, the step ends.
  • the method for periodically transmitting auxiliary scheduling information in the time division code division multiple access system further includes:
  • Node B obtains user equipment resource request information and user through the uploaded auxiliary scheduling information.
  • the method for periodically transmitting auxiliary scheduling information in the time division code division multiple access system further includes:
  • the uplink enhanced periodic split dedicated channel carries the uplink radio resource control layer signaling information of the user equipment.
  • the method for periodically transmitting auxiliary scheduling information in the time division code division multiple access system further includes:
  • Node B obtains the orientation information of the user equipment periodically by measuring the beam arrival angle of the uplink enhanced periodic split channel, and the information can be used for beamforming of the smart antenna.
  • the step (2) is specifically:
  • step (21) determining whether the user equipment has a non-scheduled enhanced uplink dedicated physical channel resource, if yes, transmitting the auxiliary scheduling information on the uplink enhanced dedicated physical channel; if not, proceeding to step (22);
  • step (23) determining whether the user equipment has the authorized scheduling resource, if yes, transmitting the auxiliary scheduling information on the authorized uplink enhanced dedicated physical channel, if not, proceeding to step (23); (23) determining whether the user equipment has the uplink enhanced The periodic split dedicated channel resource, if any, transmits the secondary scheduling information on its assigned uplink enhanced periodic split dedicated channel; if not, the step ends.
  • the present invention ensures that the HSUPA technology in the TD-SCDMA system can support uplink closed-loop synchronization and power control in the time division code division multiple access system with a small resource allocation cost, and also ensures that the UE has The determined resource can initiate the resource request information, report the path loss, and the UE power headroom information at any time, and provide a basis for the Node B to implement efficient and fast scheduling, and reduce the uplink signaling transmission delay of the UE without the resource grant.
  • FIG. 1 is a schematic diagram of an HSUPA principle of a conventional TD-CDMA system
  • 2 is a schematic diagram of the principle of the HSUPA of the time division code division multiple access system of the present invention
  • FIG. 3 is a schematic diagram of the HSUPA related uplink closed loop synchronization method of the present invention
  • FIG. 4 is a flowchart of the HSUPA uplink auxiliary scheduling information transmission method of the present invention.
  • DETAILED DESCRIPTION OF THE INVENTION The present invention will be further described below in conjunction with the accompanying drawings.
  • 1 is a schematic diagram of the HSUPA principle of a conventional TD-CDMA system.
  • the enhanced uplink data is carried on the newly introduced dedicated transport channel E-DCH.
  • Each UE has at most two CCTrCHs of the E-DCH type, and only one E-DCH can be multiplexed in each CCTrCH, one for unscheduled transmission and one for scheduled transmission.
  • the enhanced uplink signaling bearer may be on the newly introduced dedicated transport channel E-DCH or the newly introduced dedicated transport channel E-FDCH.
  • E-PUCH physical channel for transmitting CCTrCH of E-DCH type.
  • the E-PUCH physical channel is divided into a non-scheduled E-PUCH physical channel and a scheduled E-PUCH physical channel, where the unscheduled E-PUCH physical channel and the E-FDCH are configured by the RNC to respectively carry the unscheduled E-DCH transport channel.
  • CCTrCH and auxiliary scheduling transmission information; scheduling E-PUCH physical channel is dynamically configured by the scheduling entity located in the MAC-e of the Node B and is authorized for use by the UE through the E-AGCH channel, and is used to carry the CCTrCH for scheduling the E-DCH transmission channel. .
  • FIG. 2 is a schematic diagram of the principle of the HSUPA of the time division code division multiple access system of the present invention.
  • a system for uplink enhanced closed-loop synchronous power control and auxiliary scheduling information transmission comprising: a MAC-es/e entity, wherein the MAC-es/e The entity includes a multiplexing and sending sequence number setting entity, and the system further includes: an uplink enhanced periodic split channel, configured to transmit auxiliary scheduling information and uplink high layer signaling information, where the channel resource is only allocated to the non-scheduled resource.
  • the user equipment, the related allocation information is sent to the node B through the uplink high-level signaling;
  • the enhanced uplink shared synchronization channel is configured to carry the uplink enhanced uplink physical channel and the uplink enhanced periodic split channel closed-loop synchronization and power information;
  • the MAC-es/e entity further includes: an enhanced transport format combination selection and synchronization control entity, where the entity obtains uplink synchronization control information of the user equipment by enhancing the uplink shared synchronization channel, and transmits the information to the multiplexing and Send the serial number to set the entity.
  • the auxiliary scheduling information access control entity obtains the auxiliary scheduling information by using the uplink enhanced periodic split channel and normalizes the obtained auxiliary scheduling information.
  • a part of the MAC-e uplink signaling is carried by two new uplink control channels 7, and mainly transmits HARQ and auxiliary scheduling related information. It includes an E-UCCH (E-DCH uplink control channel) for transmitting E-TFCI and HARQ related information.
  • E-UCCH E-DCH uplink control channel
  • E-FDCH used to transmit auxiliary scheduling related information and uplink high layer signaling information, and is only used for scheduling transmission.
  • E-FDCH implements resource sharing by multiple UEs in a time division manner.
  • the downlink signaling channels E-AGCH, E-HICH and E-USCH are newly introduced.
  • E-AGCH is used to transmit authorization information and is only used for scheduling transmission;
  • E-HICH is used to carry uplink E-DCH HARQ indication information;
  • E-USCH channel is used to carry uplink E-PUCH and E-FDCH closed-loop synchronization and power control information .
  • the HSUPA uplink closed-loop synchronous power control method includes the following steps:
  • the radio network controller allocates a scheduling resource to the Node B, and allocates an uplink synchronization control physical channel and an uplink enhanced periodic split channel resource to the user equipment that only schedules the resource, where the uplink synchronization control physical channel is used to carry the user uplink.
  • the synchronization command word and the uplink enhanced period split channel power control command word, the uplink enhanced period split channel is used to carry the auxiliary scheduling information and the uplink high layer signaling information; when determining, in the RNC, a Node B supports the HSUPA technology, the RNC first needs to be performed at the RNC.
  • Allocating channel resources related to HSUPA technology including scheduling transmission of E-PUCH channel resource pool, scheduling transmission of downlink signaling channel E-AGCH, E-HICH, E-USCH channel resource pool, and simultaneously allocating UEs without non-scheduled resources E-FDCH channel resource.
  • These channel resources include channelization code resources, transmit power resources, and transmit code resources used as channel estimates.
  • the E-USCH recommends the PLCCH (Physical Layer Common Control Channel) channel defined in the protocol without adding a new channel.
  • the RNC After the RNC completes the above resource allocation, it can pass the physical connection in the NBAP protocol of the lub interface.
  • the physical shared channel reconfiguration procedure (the physical shared channel reconfiguration procedure) is sent to the Node B, and the Node B completes the resource configuration, and sends the configuration result to the RNC in the corresponding response message.
  • the FLNC determines to allocate non-scheduled transmissions and/or scheduled transmission resources for one service of one UE. For non-scheduled transmissions, the RNC allocates non-scheduled transmitted E-PUCH channel resources. E-FDCH channel resources are allocated to UEs that only schedule transmission.
  • the RNB can perform the radio link setup process, the radio link addition, and the synchronous radio link in the NBAP protocol of the Iub interface. Synchronised Radio Link Reconfiguration Preparation The request message during the process or the Unsynchronised Radio Link Reconfiguration is sent to the Node B.
  • the user equipment completes the uplink synchronization establishment and the upper open loop power control through the random access process, the open loop synchronization process, and the open loop power control process.
  • Node B After synchronization is established, Node B completes the closed-loop synchronization of the UE uplink scheduling/non-scheduled E-PUCH and E-FDCH channels through the SS in the PLCCH channel, and the PLCCH can also carry the uplink power control command (TPC) to complete the uplink closed loop.
  • TPC uplink power control command
  • Power control When the UE uplink synchronization is initially established, the UE may complete the establishment of the uplink synchronization by initiating a random access procedure.
  • the specific process can refer to the 3GGP protocol.
  • 3 is an HSUPA related uplink closed loop synchronization method of the present invention.
  • the Node B After the uplink synchronization is established, the Node B measures the arrival time of the uplink E-PUCH or E-FDCH, and generates a corresponding SS command, which is carried by the PLCCH downlink synchronization control channel and sent to the UE.
  • the PLCCH carries the uplink synchronization control commands of multiple UEs at the same time and transmits them in a certain period.
  • the UE adjusts the transmission advance of the uplink E-PUCH or E-FDCH according to the synchronization control command, as shown in FIG.
  • the Node B measures the E-FDCH received power, generates a corresponding TPC command, and is carried by the PLCCH downlink channel and sent to the UE.
  • the PLCCH carries the uplink power control commands of multiple UEs at the same time.
  • the UE adjusts the transmit power of the E-FDCH according to the power control command.
  • a method for periodically transmitting auxiliary scheduling information by a time division code division multiple access system includes:
  • the radio network controller allocates a scheduling resource to the Node B, and allocates an uplink synchronization control physical channel and an uplink enhanced periodic split channel resource to the user equipment that only schedules the resource, where the uplink synchronization control physical channel is used to carry the uplink synchronization command word of the user. And uplink enhanced period split channel power control The command, the uplink enhanced periodic split channel is used to carry the auxiliary scheduling information and the uplink high layer signaling information;
  • step (2) When the UE needs to upload the auxiliary scheduling information, it may transmit through the latest available uplink resources, including the unscheduled E-PUCH, the authorized scheduling E-PUCH, and the E-FDCH.
  • step (2) is specifically:
  • the auxiliary scheduling information (including the UE buffer occupancy information, the path loss information, and the UE residual power resource) may be MAC-in the E-PUCH.
  • the e PDU is sent to the Node B; if not, the process proceeds to step (22);
  • Step (23) determining whether the UE has the scheduling resource to authorize the E-PUCH resource, and if so, the auxiliary scheduling information may be combined with the uplink and downlink service data of the UE, and then transmitted in the E-PUCH 4 channel of the 4 ⁇ right; if not, the transfer is performed.
  • the user equipment performs auxiliary scheduling information measurement.
  • the UE may select to send auxiliary scheduling related information on that channel according to its own resource allocation situation, wherein the auxiliary scheduling information always carries the latest relevant measurement information.
  • Node B can obtain the latest UE resource request information and UE power headroom and path loss information from the E-PUCH and E-FDCH channels, as a reference for the fast scheduling algorithm.
  • the fast scheduling algorithm in Node B is responsible for the allocation of scheduling resources. In order to allocate resources reasonably and efficiently, satisfy QoS service quality, and reduce uplink interference, the scheduling algorithm needs to know the total amount of information to be transmitted in the current buffer of the UE, the current path loss information, the interference information of the neighboring cell, and the transmit power of the UE. margin. Node B can obtain relevant information from the E-PUCH and E-FDCH channels in time.
  • the scheduling of the E-PUCH resource allocation depends on the resource authorization of the Node B, not all UEs can always obtain the resource authorization, and the E-FDCH ensures that the UE that does not obtain the scheduling resource authorization timely reports the relevant auxiliary scheduling information. Based on these reported information, the Node B can better adjust the scheduling resource allocation policy.
  • the E-FDCH can be used to carry uplink RRC layer signaling information of the UE.
  • the Node B is responsible for distinguishing whether the E-FDCH carries the auxiliary scheduling information or the high layer signaling information.
  • the Node B periodically obtains the orientation information of the user equipment by measuring the beam arrival angle of the upper 4 split channel of the enhanced period, and the information can be used for beamforming of the smart antenna.
  • the uplink RC layer signaling of the UE may also be transmitted through the E-FDCH channel.
  • the Node B may adopt some special technologies.
  • This technique is used in the TD-CDMA system HSUPA technology to distinguish between the PRACH channel and the E-RUCCH channel, as distinguished by the positive and negative CRC schools 3.
  • the E-FDCH channel can be terminated at Node B or suspended at the RNC. This method can effectively improve the utilization of resources.

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

Abstract

L'invention concerne un système et un procédé destinés à améliorer la commande de puissance de synchronisation en boucle fermée et la transmission de l'information d'ordonnancement assistante d'une liaison montante, en vue de résoudre le problème de la commande de puissance de synchronisation en boucle fermée et la transmission périodique de l'information d'ordonnancement assistante de liaison montante. Le système comprend une entité E-FDCH et E-USCH de MAC-es/e. La commande améliorée de puissance de synchronisation en boucle fermée du procédé de liaison montante comprend les étapes suivantes : assignation RNC de la ressource; réalisation UE de la synchronisation en liaison montante et de la commande de puissance en boucle fermée liaison montante; réalisation en noeud B de la synchronisation en boucle fermée et de la commande de puissance en boucle fermée de UE. Le procédé de transmission périodique de l'information d'ordonnancement assistante comprend les étapes suivantes : assignation RNC de la ressource; jugement visant à savoir si l'UE a besoin de télécharger l'information d'ordonnancement assistante, si oui, téléchargement; si non, mettre fin au processus. L'invention garantit que le noeud B acquiert en temps voulu l'information d'ordonnancement assistante de tous les UE, et améliore la capacité globale de l'arithmétique d'ordonnancement.
PCT/CN2006/003790 2006-08-29 2006-12-30 Système et procédé destinés à améliorer la commande de puissance de synchronisation en boucle fermée et la transmission de l'information d'ordonnancement assistante d'une liaison montante WO2008028369A1 (fr)

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CN200610112060.8 2006-08-29
CN2006101120608A CN101136667B (zh) 2006-08-29 2006-08-29 上行增强闭环同步功控和辅助调度信息传输的系统和方法

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CN101568176B (zh) * 2008-04-23 2012-07-04 中兴通讯股份有限公司 上行同步实现方法
EP2670069B1 (fr) 2012-06-01 2015-08-12 Telefonaktiebolaget L M Ericsson (publ) Contrôle de transmission de données
US20140036794A1 (en) * 2012-08-03 2014-02-06 Ali T. Koc User equipment assistance information signaling in a wireless network
CN113613268B (zh) * 2021-06-29 2023-07-21 重庆邮电大学 下行时间反转非正交多址接入系统的设计与优化方法

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CN1767410A (zh) * 2005-11-25 2006-05-03 凯明信息科技股份有限公司 时分同步码分多址系统中不连续发射状态功率控制的方法
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WO2006079689A1 (fr) * 2005-01-25 2006-08-03 Nokia Siemens Networks Oy Procede de reduction des interferences au niveau d'une cellule interieure dans un reseau de communication cellulaire sans fil
CN1767410A (zh) * 2005-11-25 2006-05-03 凯明信息科技股份有限公司 时分同步码分多址系统中不连续发射状态功率控制的方法

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