WO2007142117A1 - 上り方向の通信に対するデータフォーマット選択手順(e-tfc)の最適化方法 - Google Patents
上り方向の通信に対するデータフォーマット選択手順(e-tfc)の最適化方法 Download PDFInfo
- Publication number
- WO2007142117A1 WO2007142117A1 PCT/JP2007/061087 JP2007061087W WO2007142117A1 WO 2007142117 A1 WO2007142117 A1 WO 2007142117A1 JP 2007061087 W JP2007061087 W JP 2007061087W WO 2007142117 A1 WO2007142117 A1 WO 2007142117A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- time
- limit
- terminal
- base station
- update
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- the present invention relates to a method of optimizing a data format selection procedure (E-TFC) for uplink communication between a terminal of a cellular communication network and a base station, in which: Transmits a signal including at least one repetition command in a predetermined number of time slots to the terminal prior to uplink communication, the command including at least one predetermined parameter for selecting a data format;
- the terminal is configured to update, and the terminal detects the information transmitted from the base station when it receives the signal on the downlink path, and is detected during a time window having a predetermined time T. Perform the update according to the value
- the invention also relates to a mobile terminal configured to implement this method.
- the data bit rate passing through the downlink from the network to the terminal is an increase from the terminal to the network.
- the link bit rate is significantly higher.
- the trol) layer task must be performed.
- time T may be insufficient to perform the entire task necessary for the terminal to be able to select a data format tailored for uplink transmission.
- the object of the present invention is to eliminate the above disadvantages.
- Another object of the present invention is to optimize information detection time for updating predetermined parameters involved in data format selection.
- the object of the present invention is to use various configurations of physical layers, in particular, various values of T to perform all the tasks necessary to perform uplink transmission on an E-DCH channel.
- the present invention recommends a method for optimizing the data format selection procedure (E-TFC) for uplink communication between the terminal of the cellular communication network and the base station,
- the base station transmits to the terminal a signal including at least one repetition information in a predetermined number of time slots prior to uplink transmission, and the information intervenes in selection of data format.
- Configured to update one of the predetermined parameters and when the terminal receives the signal, it detects the value of the command and has a predetermined time T During the window, the update is performed according to the detected value.
- the method according to the present invention further optimizes the number of time slots used by the terminal to detect command values transmitted from the base station to use the entire time ⁇ , and
- transmission of a signal is performed via E-RGCH / E-AG CH (Enhanced Relative Grant Channel and Enhanced Absolute Grant Channel), and uplink. Transmission of direction is performed via E_ DPDCH (Enhanced Dedicated Physical Data Channel).
- E-RGCH / E-AG CH Enhanced Relative Grant Channel and Enhanced Absolute Grant Channel
- E_ DPDCH Enhanced Dedicated Physical Data Channel
- the update parameters during time T are
- the present invention also relates to a terminal for transmission / reception of data packets via a base station of a cellular communication network, wherein the base station transmits at least one of a predetermined number of time slots prior to uplink transmission.
- a signal comprising a repeat command is transmitted to the terminal, said command being configured to update at least one predetermined parameter involved in the selection of the data format, and when the terminal receives said signal, the base station Of the command transmitted from Detecting a value and during the time window having a predetermined time .tau.
- this terminal optimizes the number of time slots used to detect command values transmitted from the base station to use the entire time T,
- the base station includes means for performing the update without compromising the reliability of the signal detection transmitted from the base station.
- the terminal according to the present invention is
- This terminal is further adapted to allow the mobile terminal to use the entire time T from the base station.
- HSUPA High Speed Uplink Packet Access
- the base station of the network transmits to the terminal a signal including a plurality of repetitive commands in a predetermined number of time slots, and this command selects the data format.
- the terminal is configured to be able to update predetermined parameters that intervene in.
- the terminal receives the signal, it detects the value of the transmitted command and performs an update according to the detected value. This operation is performed during the time window T defined by the manufacturer.
- FIG. 1A shows a downlink channel DL-E-RGCH 2 (Downlink Enhanced Relative Grant Channel) and an uplink channel UL-E- DPDCH 4 (Uplink It schematically shows a time-series table showing Enhanced Dedicated Physical Data Channel.
- the downlink channel DL-E-RGCH transmits one of 12 time slots 6 power UP, DOWN or HOLD commands in one downlink frame. This command causes the terminal to intervene in the selection of parameters that intervene in the relative relative and absolute grant (Relative ZA absolute grant detection) procedures, eg, the size of the E-DCH block transmitted on the uplink.
- the ratio can be updated.
- ⁇ indicates the gain coefficient of each DPDCH channel
- ⁇ indicates each DPCCH channel
- an E-DCH enhanced communication channel (Transmission Time Interval) block including data transmitted from the terminal to the base station after detecting one of the commands UP, DOWN or HOLD. Eight forces are sent.
- the ⁇ U command allows the terminal to select, for the block E-DCH TTI, the dimensions to be adapted to the data to be transmitted on the uplink.
- FIG. 1A shows the case where the interval TTI has a duration of 10 ms
- FIGS. 1B and 1C show the case where the interval TTI has a duration of 2 ms.
- the time T separating the 12th time slot 6 and the first TTI is DL ⁇ E ⁇ RGCH
- T is for performing uplink transmission via the UL-E-DPDCH channel
- Terminal power Indicates the time required to execute all operations of L1 layer and MAC layer (Medium Access Control).
- Time T is the hardware and software configuration that the terminal manufacturer chooses.
- the operation of the L1 layer and the MAC layer is, in particular, relative / absolute 3 no-committee missing EURelativeZA absolute grant detection; Includes TFC restriction / selection procedures, Data encryption, and Turbo encoding.
- step 10 consists of calculating time T
- step 12 consists of estimating available time T
- step 14 consists of calculating time T and time T
- limit rg limit consists of comparing.
- T rg Wms DPC -E E-RGCH ⁇ + 38400-12 x 2560 + 1024 ie
- Deviation (unit: chip) is shown. This value is not the same when TTI is 2 ms and 10 ms.
- Deviation (unit: chip) is shown. This value is not the same when TTI is 2 ms and 10 ms.
- the value is a multiple of 256 chips.
- the time T required for the terminal to perform the MA C / L1 layer task for a given HARQ (Hybrid Acknowledgment Request) procedure is the first transmission of the transport block
- step 12 the terminal checks the state of the HARQ procedure (whether initial transmission or retransmission) and selects an appropriate T value.
- next step 18 is the time to carry the signal.
- Step 20 consists in reducing the number of lot 2 and step 20 to detect the signal with the remaining number of time slots.
- the terminal may execute all steps in the MAC / L1 layer.
- the number of time slots used to execute detection of the command value transmitted on the downlink path is
- time T is less than time T, and the terminal has physical layer L1 and MAC rg limit.
- the base station can transmit by using a time slot group 30 including only five time slots 6 instead of twelve. Detects the command value to send.
- time T is less than time T and the terminal is physically
- the terminal detects a command value transmitted by the base station by using a time slot group 32 including only two time slots instead of three.
- the case shown in FIG. 1C corresponds to the retransmission of the UL-E-DPDCH channel after the first failure.
- the E-TFC format selection procedure is not performed again.
- the time allotted for the execution of this procedure is derived by T force.
- T is less than T limit limit rg, in which case the terminal has sufficient time to process the physical layer L1 and the MAC layer.
- the terminal then uses all three time slots that make up the TTI carrying the signal.
- each time slot Ci of the GCH channel are multiplied by the signature Si and the results of these multiplications are added. After that, the average value of the obtained sum is output to detect the UP, DOWN or HOLD value of the signal transmitted by the base station.
- time slots are used to perform the detection, while in the case shown in FIG. 3B only 6 time slots are used.
- two thresholds are defined to detect the command value transmitted on the downstream path, and the first threshold RG-UP-TH is the value of UP And the second threshold RG—DOWN—TH corresponds to the value of DOWN.
- N_TH can be adapted to improve detection reliability.
- FIG. 4 is a graph showing the influence of the defined threshold correction on the reliability of detection of command values transmitted to terminals in the downlink path.
- the left part "G" in Fig. 4 shows the case where 12 time slots of DL-E-RGCH channel are used to perform detection.
- the right-hand part "D" in Fig. 4 shows the case where only (12-X) of the 12 time slots of the DL-E-RGCH channel are used to perform detection.
- X is an integer of 12 or less.
- the threshold RG—UP—TH is increased by the value of ⁇ up, and the threshold RG—DOWN
- the new detection threshold is
- the detection probability of the value UP indicated in the segment before fitting the threshold is higher than the detection probability of the value UP after fitting the threshold. As a result, if the threshold value is increased, the erroneous UP or
- the probability of detecting the DOWN command value is low.
- threshold adaptation favors false detection of HOLD values over false detection of UP or DOWN values.
- Fig. 1 Figs. 1A to 1C outline time series diagrams of time slots used respectively for uplink and downlink transmission, and available time windows between the two transmissions. It is a figure shown schematically.
- FIG. 2 is a flow chart showing the main steps of the method according to the invention.
- FIGS. 3A and 3B are diagrams showing processing of time slots of a downlink path in the case where the method according to the present invention is not used and in the case where the method according to the present invention is used.
- FIG. 4 This is a graph showing the effect of matching the detection threshold of the information transmitted from the network to the terminal in the downlink path.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008520527A JP4877323B2 (ja) | 2006-05-31 | 2007-05-31 | 上り方向の通信に対するデータフォーマット選択手順(e−tfc)の最適化方法 |
US12/301,570 US8260308B2 (en) | 2006-05-31 | 2007-05-31 | Method of optimizing data format selection procedure for up link communication |
EP07767009A EP2023648A4 (en) | 2006-05-31 | 2007-05-31 | METHOD FOR OPTIMIZING DATA FORMAT SELECTION PROCEDURE (E-TFC) FOR UPLINK COMMUNICATION |
CN2007800186545A CN101449610B (zh) | 2006-05-31 | 2007-05-31 | 优化用于上行链路通信的数据格式选择过程的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0651980 | 2006-05-31 | ||
FR0651980A FR2901954A1 (fr) | 2006-05-31 | 2006-05-31 | Procede d'optimisation de la procedure de selection de format de donnees (e-tfc) pour une communication ascendante |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007142117A1 true WO2007142117A1 (ja) | 2007-12-13 |
Family
ID=37554430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/061087 WO2007142117A1 (ja) | 2006-05-31 | 2007-05-31 | 上り方向の通信に対するデータフォーマット選択手順(e-tfc)の最適化方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8260308B2 (ja) |
EP (1) | EP2023648A4 (ja) |
JP (1) | JP4877323B2 (ja) |
CN (1) | CN101449610B (ja) |
FR (1) | FR2901954A1 (ja) |
WO (1) | WO2007142117A1 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR651980A (fr) | 1928-03-30 | 1929-03-01 | Système de train roulant pour berlines de mines, wagonnets, etc. | |
WO2005125259A1 (ja) * | 2004-06-17 | 2005-12-29 | Ntt Docomo, Inc. | 伝送速度制御方法、送信電力制御方法、送信電力比制御方法、移動通信システム、移動局及び無線基地局 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI101114B (fi) * | 1995-04-25 | 1998-04-15 | Nokia Telecommunications Oy | Epäsymmetrinen suurinopeuksinen datasiirtomenetelmä matkapuhelinverkos sa |
US7433683B2 (en) * | 2000-12-28 | 2008-10-07 | Northstar Acquisitions, Llc | System for fast macrodiversity switching in mobile wireless networks |
WO2004049648A2 (en) * | 2002-11-25 | 2004-06-10 | Siemens Aktiengesellschaft | Channel configuration and timing for enhanced uplink dch |
GB2402021A (en) * | 2003-05-19 | 2004-11-24 | Nec Corp | Rate control method and apparatus for data packet transmission from a mobile phone to a base station |
DE602004018325D1 (de) * | 2004-11-03 | 2009-01-22 | Panasonic Corp | HARQ Protokolloptimierung für Paketdatenübertragung |
US7643515B2 (en) * | 2004-11-10 | 2010-01-05 | Qualcomm Incorporated | Method and apparatus for deriving transmission timing of a downlink control channel in support of enhanced uplink operation |
-
2006
- 2006-05-31 FR FR0651980A patent/FR2901954A1/fr active Pending
-
2007
- 2007-05-31 US US12/301,570 patent/US8260308B2/en not_active Expired - Fee Related
- 2007-05-31 WO PCT/JP2007/061087 patent/WO2007142117A1/ja active Application Filing
- 2007-05-31 EP EP07767009A patent/EP2023648A4/en not_active Withdrawn
- 2007-05-31 CN CN2007800186545A patent/CN101449610B/zh not_active Expired - Fee Related
- 2007-05-31 JP JP2008520527A patent/JP4877323B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR651980A (fr) | 1928-03-30 | 1929-03-01 | Système de train roulant pour berlines de mines, wagonnets, etc. | |
WO2005125259A1 (ja) * | 2004-06-17 | 2005-12-29 | Ntt Docomo, Inc. | 伝送速度制御方法、送信電力制御方法、送信電力比制御方法、移動通信システム、移動局及び無線基地局 |
Non-Patent Citations (2)
Title |
---|
"Physical channels and mapping of transport channels onto physical channels (FDD) 7 Timing relationship between physical channels", 3GPP TS 25.211 V7.0.0, 22 March 2006 (2006-03-22), pages 40 - 46, XP003020139, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/Specs/archive/25_series/25.211> * |
See also references of EP2023648A4 |
Also Published As
Publication number | Publication date |
---|---|
EP2023648A1 (en) | 2009-02-11 |
FR2901954A1 (fr) | 2007-12-07 |
CN101449610A (zh) | 2009-06-03 |
JPWO2007142117A1 (ja) | 2009-10-22 |
EP2023648A4 (en) | 2009-07-01 |
JP4877323B2 (ja) | 2012-02-15 |
US20090117912A1 (en) | 2009-05-07 |
CN101449610B (zh) | 2012-10-03 |
US8260308B2 (en) | 2012-09-04 |
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