WO2001039523A2 - Procede de signalisation d'une structure de canal radio dans un systeme de communication radio - Google Patents

Procede de signalisation d'une structure de canal radio dans un systeme de communication radio Download PDF

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Publication number
WO2001039523A2
WO2001039523A2 PCT/DE2000/004227 DE0004227W WO0139523A2 WO 2001039523 A2 WO2001039523 A2 WO 2001039523A2 DE 0004227 W DE0004227 W DE 0004227W WO 0139523 A2 WO0139523 A2 WO 0139523A2
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WO
WIPO (PCT)
Prior art keywords
radio
channel
signaling
bch
fach
Prior art date
Application number
PCT/DE2000/004227
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German (de)
English (en)
Other versions
WO2001039523A3 (fr
Inventor
Reinhard KÖHN
Jörg Schniedenharn
Armin Sitte
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to AU28266/01A priority Critical patent/AU2826601A/en
Publication of WO2001039523A2 publication Critical patent/WO2001039523A2/fr
Publication of WO2001039523A3 publication Critical patent/WO2001039523A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • the invention relates to a method for signaling a radio channel structure of a radio-m Remodelunikationssystern, in particular ⁇ sondere in a mobile radio system.
  • radio communication systems information such as voice, picture information or other data is transmitted with the aid of electromagnetic waves via a radio interface between a transmitting and a receiving radio station, such as a base station or a mobile station in the case of a mobile radio system.
  • the electromagnetic waves are emitted at carrier frequencies that lie in the frequency band intended for the respective system.
  • the carrier frequencies are in the range of 900 MHz, 1800 MHz and 1900 MHz.
  • carrier frequencies in the range of approx. 2000 MHz are provided.
  • the TDD mode is characterized in particular by the fact that a common frequency band is used both for signal transmission in the upward direction (UL - Uplmk) and m downward direction (DL - Downlmk), while the FDD mode uses a respective frequency band for the transmission directions.
  • certain signaling channels are transmitted in the m defined time slots by the base stations or subscriber stations.
  • the organization channel BCCH (Broadcast Control Channel), which is transmitted with a higher transmission power compared to normal traffic channels and contains information relating to the structure of the mobile radio system or the respective radio cell of a base station, also includes these signaling channels.
  • This channel BCCH is always m the first time slot of a time frame and on a ⁇ be voted carrier frequency within one m one radio cell to grouting standing frequency band sent.
  • a subscriber station determines the location (frequency and time slot) of the BCCH organizational channel in the radio cell in which it is currently located, and derives the structure of the radio interface after receiving and evaluating it.
  • the organization channel BCH beacon channel
  • the FACH forward access channel
  • further signaling channels such as the PCH (paging channel)
  • This radio channel resource is, for example, a specific spreading code in the first time slot of a time frame.
  • the invention is based on the object of specifying a method which enables simple signaling of the radio channel structure. This object is achieved by the method according to the features of independent claim 1 and by the base station system according to the features of independent claim 10. Further developments of the invention can be found in the dependent claims.
  • a base station transmits at least one signaling channel with a channel-specific format of a radio block, and a radio channel structure is derived from a receiving subscriber station based on the format of the radio block.
  • the method according to the invention advantageously enables a subscriber station to clearly identify the radio communication system when it first accesses a radio communication system based on the format of the respective radio block of the signaling channel, without additional signaling by means of a separate channel or a special signaling field in the radio blocks must be done.
  • the format also advantageously differs from the format of a normal traffic channel.
  • At least two signaling channels use the same radio channel resource according to a time-division multiplex method.
  • the subscriber station can clearly identify the respective signaling channel and thus carry out a rapid synchronization with the radio channel structure.
  • a radio channel resource can correspond to a time slot within a frequency band in the case of a simple TDMA subscriber separation method or, in the case of an additional separation according to a CDMA method, correspond to one or more spreading codes within a TDMA time slot.
  • the respective radio blocks of the signaling channels can be distinguished by an individual length or sequence of the data.
  • the subscriber station uses a known error detection mechanism, it can already make a distinction based on the length of the data within the radio block of the signaling channel. With such a mechanism, a data section that is too long or too short is rejected. Only when the length of the data matches the length expected by the mechanism is the data evaluated and forwarded to higher protocol instances. The same applies to the individual order of the data. Only when the received data is identified as correct by the mechanism is an evaluation carried out. In general it can be formulated that the error detection mechanism recognizes this data as correct and evaluates it only if the received data match the structure of the signaling channel or signaling channels sought.
  • the respective format of the signaling channel m is selected identically in all radio cells of the radio communication system or is differentiated individually for each radio cell.
  • the subscriber station can advantageously be in each radio cell Radio channel structure m can be determined in a simple manner without any special prior knowledge, while in the case of a format specific to radio cells, the subscriber station implicitly signals and thus identifies the respective radio cell, and the subscriber station is therefore able to differentiate, for example, signaling channels sent in parallel to m neighboring radio cells.
  • the method according to the invention is used particularly advantageously in a radio communication system which uses a hybrid TD / CDMA subscriber separation method.
  • FIG. 1 shows a block diagram of a radio communication system, in particular a mobile radio system
  • FIG. 2 shows an exemplary schematic representation of the frame structure of the radio interface and the structure of a radio block
  • FIG. 3 shows a sequence of several time frames with different signaling channels
  • FIG. 4 shows radio blocks of signaling channels with different data formats.
  • a mobile radio system consists in each case of a multiplicity of mobile switching centers MSC (Mobile Switchmg Center) which belong to a switching network (Switchmg Subsystem) and which are networked with one another or which provide access to a fixed network PSTN, and each of one or more connected to these mobile switching centers MSC Basisstationssyste- men BSS (Base Station Subsystem).
  • MSC Mobile Switchmg Center
  • Switchmg Subsystem switching network
  • a base station system BSS in turn has at least one device RNC (Radio Network Controller) for assigning radio resources and at least one base station NB (node B) connected to it.
  • RNC Radio Network Controller
  • a base station NB can establish and maintain connections to subscriber stations UE (user equipment) via a radio interface. At least one radio cell Z is formed by each base station NB. The size of the radio cell Z is generally determined by the range of an organization channel BCH, which is transmitted by the base stations NB with a higher and constant transmission power. In the case of a sectoring or hierarchical cell structures, several radio cells Z can also be supplied per base station NB.
  • FIG. 1 shows a subscriber station UE which is located in the radio cell Z of a base station NB.
  • the subscriber station UE has set up a communication link to the base station NB, on which a selected service is transmitted in the upward UL and downward direction DL.
  • the communication connection is separated by one or more spreading codes assigned to the subscriber station UE from communication connections established in parallel in the radio cell Z, the subscriber station UE, for example, all spreading codes currently assigned in each case in the radio cell Z for receiving the signals of its own communication association in accordance with the known Jo uses t-detection method.
  • FIG. 1 An exemplary frame structure of the radio interface, as it is realized in the TDD mode of the future UMTS mobile radio system and in a modified form in the future Chinese TD-SCDMA mobile radio system, is shown in FIG seen.
  • Each time slot ts within the frequency band B forms a frequency channel.
  • the successive time slots ts are structured according to a frame structure. In this way, 16 time slots ts0 to tsl5 are combined to form a time frame fr.
  • part of the time slots tsO to tsl5 in the upward direction UL and part of the time slots tsO to tsl5 in the downward direction DL are used, the transmission in the upward direction UL taking place, for example, before the transmission in the downward direction DL.
  • a switchover point SP SP - Switchmg Point
  • SP SP - Switchmg Point
  • Timeslots ts for upward or downward direction UL, DL various asymmetrical resource allocations can be made.
  • Radio blocks fb Information of several connections m radio blocks fb are transmitted within the time slots ts.
  • the data d are spread individually with a fine structure, a spreading code c, so that a number of connections can be separated on the receiving side by this CDMA component (code division multiple access).
  • a radio channel resource is defined from the combination of a frequency channel and a spreading code c, which can be used for the transmission of signaling and useful information.
  • the spreading of individual symbols of the data d has the effect that within the symbol duration T sym Q transmit chips of the duration T chip become.
  • the Q chips form the connection-specific spreading code c.
  • a training sequence tseql In the radio blocks fb, a training sequence tseql.
  • a protection time gp is provided within the time slot ts to compensate for different signal run tents of the connections of successive time slots ts.
  • certain signaling channels such as the BCH and the FACH, use the same radio channel resource in each time frame, this always corresponding, for example, to the first spreading code m to the first time slot ts0 of a time frame fr.
  • this radio channel resource can, however, also “wander ” within the time frame for, ie, for example, change the respectively assigned time slot ts m of a certain time sequence.
  • FIG. 3 shows an exemplary sequence of several time frames frl ... fr4 for describing the use of the same radio channel resource by several signaling channels BCH, FACH, only the first time slot tsO of a respective time frame frl ... fr4 being specified in each case.
  • the signaling channels BCH and FACH use the common radio channel resource in a time division multiplex, which is defined by the first time slot tsO and the first spreading code cl.
  • a subscriber station UE which carries out an initial access to the radio communication system, first searches for the organization channel BCH, since this sends out information relevant for a subsequent connection establishment. In addition, due to its higher transmission power, this channel can also be received very well by the subscriber station UE near the radio cell boundaries.
  • the subscriber station UE is per se Note that the organization channel BCH (as described above) with the first radio channel resource of a Zeitrah ⁇ mens fr is sent, and tries to detect the control channel BCH. Since this, as shown, is not sent as in the known GSM mobile radio system m all time frames fr, the subscriber station UE may have to search successively several time frames for the organization channel BCH until it has completely detected and evaluated its information.
  • the organization channel BCH differs from, for example, the FACH by a different data length d, as is shown by way of example in FIG.
  • the organization channel BCH e n has a shorter data field than the FACH, 248 bits compared to 256 bits.
  • the error detection mechanism in the subscriber station UE is m knowledge of these lengths of the respective data fields d. If this mechanism detects a data field that is too long, for example if the FACH is received instead of the BCH, it discards the data field and tries to receive it again. This continues until the length of the received data field matches the expected length. Only then is the data field with the information hidden therein evaluated in higher protocol instances. If the length of the data fields is also varied from radio cell to radio cell, this can be done
  • Subscriber station UE assuming knowledge of the respective length, differentiate the signaling channels BCH, FACH of the respective radio cells and advantageously use this knowledge to determine a suitable radio cell for establishing a connection.

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

Abstract

Selon l'invention, une station de base émet au moins un canal de signalisation présentant un format individuel par canal d'un bloc radio, et une station abonné réceptrice déduit la structure de canal radio en fonction du format du bloc radio.
PCT/DE2000/004227 1999-11-29 2000-11-28 Procede de signalisation d'une structure de canal radio dans un systeme de communication radio WO2001039523A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU28266/01A AU2826601A (en) 1999-11-29 2000-11-28 Method for signaling a radio channel structure in a radio communication system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999157288 DE19957288C1 (de) 1999-11-29 1999-11-29 Verfahren zur Signalisierung einer Funkkanalstruktur in einem Funk-Kommunikationssystem
DE19957288.7 1999-11-29

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WO2001039523A2 true WO2001039523A2 (fr) 2001-05-31
WO2001039523A3 WO2001039523A3 (fr) 2001-10-25

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AU (1) AU2826601A (fr)
DE (1) DE19957288C1 (fr)
WO (1) WO2001039523A2 (fr)

Cited By (34)

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US7916624B2 (en) 2000-09-13 2011-03-29 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US8462859B2 (en) 2005-06-01 2013-06-11 Qualcomm Incorporated Sphere decoding apparatus
US8477684B2 (en) 2005-10-27 2013-07-02 Qualcomm Incorporated Acknowledgement of control messages in a wireless communication system
US8547951B2 (en) 2005-03-16 2013-10-01 Qualcomm Incorporated Channel structures for a quasi-orthogonal multiple-access communication system
US8565194B2 (en) 2005-10-27 2013-10-22 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US8582509B2 (en) 2005-10-27 2013-11-12 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US8582548B2 (en) 2005-11-18 2013-11-12 Qualcomm Incorporated Frequency division multiple access schemes for wireless communication
US8599945B2 (en) 2005-06-16 2013-12-03 Qualcomm Incorporated Robust rank prediction for a MIMO system
US8611284B2 (en) 2005-05-31 2013-12-17 Qualcomm Incorporated Use of supplemental assignments to decrement resources
US8693405B2 (en) 2005-10-27 2014-04-08 Qualcomm Incorporated SDMA resource management
US8842619B2 (en) 2005-10-27 2014-09-23 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US8879511B2 (en) 2005-10-27 2014-11-04 Qualcomm Incorporated Assignment acknowledgement for a wireless communication system
US8885628B2 (en) 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US8917654B2 (en) 2005-04-19 2014-12-23 Qualcomm Incorporated Frequency hopping design for single carrier FDMA systems
US9088384B2 (en) 2005-10-27 2015-07-21 Qualcomm Incorporated Pilot symbol transmission in wireless communication systems
US9130810B2 (en) 2000-09-13 2015-09-08 Qualcomm Incorporated OFDM communications methods and apparatus
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
US9137822B2 (en) 2004-07-21 2015-09-15 Qualcomm Incorporated Efficient signaling over access channel
US9143305B2 (en) 2005-03-17 2015-09-22 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9144060B2 (en) 2005-10-27 2015-09-22 Qualcomm Incorporated Resource allocation for shared signaling channels
US9148256B2 (en) 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
US9154211B2 (en) 2005-03-11 2015-10-06 Qualcomm Incorporated Systems and methods for beamforming feedback in multi antenna communication systems
US9172453B2 (en) 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
US9179319B2 (en) 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US9184870B2 (en) 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US9209956B2 (en) 2005-08-22 2015-12-08 Qualcomm Incorporated Segment sensitive scheduling
US9210651B2 (en) 2005-10-27 2015-12-08 Qualcomm Incorporated Method and apparatus for bootstraping information in a communication system
US9225488B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Shared signaling channel
US9225416B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Varied signaling channels for a reverse link in a wireless communication system
US9246560B2 (en) 2005-03-10 2016-01-26 Qualcomm Incorporated Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
US9307544B2 (en) 2005-04-19 2016-04-05 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US9461859B2 (en) 2005-03-17 2016-10-04 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9520972B2 (en) 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9660776B2 (en) 2005-08-22 2017-05-23 Qualcomm Incorporated Method and apparatus for providing antenna diversity in a wireless communication system

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US8644292B2 (en) 2005-08-24 2014-02-04 Qualcomm Incorporated Varied transmission time intervals for wireless communication system
US8831607B2 (en) 2006-01-05 2014-09-09 Qualcomm Incorporated Reverse link other sector communication

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US9426012B2 (en) 2000-09-13 2016-08-23 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US8014271B2 (en) 2000-09-13 2011-09-06 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US9130810B2 (en) 2000-09-13 2015-09-08 Qualcomm Incorporated OFDM communications methods and apparatus
US7990844B2 (en) 2000-09-13 2011-08-02 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US7916624B2 (en) 2000-09-13 2011-03-29 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US8098568B2 (en) 2000-09-13 2012-01-17 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US8098569B2 (en) 2000-09-13 2012-01-17 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US8199634B2 (en) 2000-09-13 2012-06-12 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US8218425B2 (en) 2000-09-13 2012-07-10 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US8223627B2 (en) 2000-09-13 2012-07-17 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US8295154B2 (en) 2000-09-13 2012-10-23 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US10313069B2 (en) 2000-09-13 2019-06-04 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US11032035B2 (en) 2000-09-13 2021-06-08 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US7924699B2 (en) 2000-09-13 2011-04-12 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US7990843B2 (en) 2000-09-13 2011-08-02 Qualcomm Incorporated Signaling method in an OFDM multiple access system
US10517114B2 (en) 2004-07-21 2019-12-24 Qualcomm Incorporated Efficient signaling over access channel
US9137822B2 (en) 2004-07-21 2015-09-15 Qualcomm Incorporated Efficient signaling over access channel
US10237892B2 (en) 2004-07-21 2019-03-19 Qualcomm Incorporated Efficient signaling over access channel
US10194463B2 (en) 2004-07-21 2019-01-29 Qualcomm Incorporated Efficient signaling over access channel
US10849156B2 (en) 2004-07-21 2020-11-24 Qualcomm Incorporated Efficient signaling over access channel
US9148256B2 (en) 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
US11039468B2 (en) 2004-07-21 2021-06-15 Qualcomm Incorporated Efficient signaling over access channel
US9246560B2 (en) 2005-03-10 2016-01-26 Qualcomm Incorporated Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
US9154211B2 (en) 2005-03-11 2015-10-06 Qualcomm Incorporated Systems and methods for beamforming feedback in multi antenna communication systems
US8547951B2 (en) 2005-03-16 2013-10-01 Qualcomm Incorporated Channel structures for a quasi-orthogonal multiple-access communication system
US9461859B2 (en) 2005-03-17 2016-10-04 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9520972B2 (en) 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9143305B2 (en) 2005-03-17 2015-09-22 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9184870B2 (en) 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US9307544B2 (en) 2005-04-19 2016-04-05 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US9036538B2 (en) 2005-04-19 2015-05-19 Qualcomm Incorporated Frequency hopping design for single carrier FDMA systems
US8917654B2 (en) 2005-04-19 2014-12-23 Qualcomm Incorporated Frequency hopping design for single carrier FDMA systems
US9408220B2 (en) 2005-04-19 2016-08-02 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US8611284B2 (en) 2005-05-31 2013-12-17 Qualcomm Incorporated Use of supplemental assignments to decrement resources
US8462859B2 (en) 2005-06-01 2013-06-11 Qualcomm Incorporated Sphere decoding apparatus
US8599945B2 (en) 2005-06-16 2013-12-03 Qualcomm Incorporated Robust rank prediction for a MIMO system
US9179319B2 (en) 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US8885628B2 (en) 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US9693339B2 (en) 2005-08-08 2017-06-27 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US9860033B2 (en) 2005-08-22 2018-01-02 Qualcomm Incorporated Method and apparatus for antenna diversity in multi-input multi-output communication systems
US9660776B2 (en) 2005-08-22 2017-05-23 Qualcomm Incorporated Method and apparatus for providing antenna diversity in a wireless communication system
US9240877B2 (en) 2005-08-22 2016-01-19 Qualcomm Incorporated Segment sensitive scheduling
US9246659B2 (en) 2005-08-22 2016-01-26 Qualcomm Incorporated Segment sensitive scheduling
US9209956B2 (en) 2005-08-22 2015-12-08 Qualcomm Incorporated Segment sensitive scheduling
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
US9210651B2 (en) 2005-10-27 2015-12-08 Qualcomm Incorporated Method and apparatus for bootstraping information in a communication system
US9172453B2 (en) 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
US8693405B2 (en) 2005-10-27 2014-04-08 Qualcomm Incorporated SDMA resource management
US9144060B2 (en) 2005-10-27 2015-09-22 Qualcomm Incorporated Resource allocation for shared signaling channels
US9225416B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Varied signaling channels for a reverse link in a wireless communication system
US8879511B2 (en) 2005-10-27 2014-11-04 Qualcomm Incorporated Assignment acknowledgement for a wireless communication system
US9225488B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Shared signaling channel
US8842619B2 (en) 2005-10-27 2014-09-23 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US9088384B2 (en) 2005-10-27 2015-07-21 Qualcomm Incorporated Pilot symbol transmission in wireless communication systems
US8477684B2 (en) 2005-10-27 2013-07-02 Qualcomm Incorporated Acknowledgement of control messages in a wireless communication system
US8582509B2 (en) 2005-10-27 2013-11-12 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US10805038B2 (en) 2005-10-27 2020-10-13 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US8565194B2 (en) 2005-10-27 2013-10-22 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US8582548B2 (en) 2005-11-18 2013-11-12 Qualcomm Incorporated Frequency division multiple access schemes for wireless communication
US8681764B2 (en) 2005-11-18 2014-03-25 Qualcomm Incorporated Frequency division multiple access schemes for wireless communication

Also Published As

Publication number Publication date
WO2001039523A3 (fr) 2001-10-25
CN1157005C (zh) 2004-07-07
DE19957288C1 (de) 2001-05-10
AU2826601A (en) 2001-06-04
CN1402916A (zh) 2003-03-12

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