EP2044744A1 - Übertragungsmuster für die übertragung von daten in einem funkkommunikationssystem - Google Patents
Übertragungsmuster für die übertragung von daten in einem funkkommunikationssystemInfo
- Publication number
- EP2044744A1 EP2044744A1 EP07765808A EP07765808A EP2044744A1 EP 2044744 A1 EP2044744 A1 EP 2044744A1 EP 07765808 A EP07765808 A EP 07765808A EP 07765808 A EP07765808 A EP 07765808A EP 2044744 A1 EP2044744 A1 EP 2044744A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transmission
- resl
- data
- res2
- base station
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
Definitions
- the invention relates to a method and devices for avoiding interference in a cellular radio communication system.
- the avoidance of interference is of particular importance.
- the main focus of interference avoidance is on avoiding intercell interference.
- Interference between different cells can in this case using the example of Mo bilfunkkommunikationssystems with a plurality of Basissta ⁇ functions divided into two main groups.
- a base station defines a radio cell.
- interferences of the first group are less pronounced compared to interferences of the second group, in which interference at the cell boundaries is considered.
- interference occurs with broadcasts of a very limited number of neighboring base stations.
- the measured interference is much higher at the cell borders and have intention is to significantly greater impact on the radio traffic of the cell as the interference of the first group, occurring around the cell centering ⁇ rum around.
- the object of the invention is to design a method and devices such that an efficient allocation of resources in a radio communication system is made possible while largely avoiding intercell interference.
- the invention relates to a method for transmitting data between base stations and terminals in a radio communication system.
- the method uses at least a first time-frequency spectrum, wherein the at least one time-frequency spectrum includes a plurality of transmission resources.
- a transmission resource is defined a divided subcarriers into time slots and at least one time slot through a section of the time-frequency spectrum, formed by min ⁇ least.
- data is transmitted in a frame on a transmission resource between a base station and a terminal.
- the method according to the invention is characterized in that the base station transmits the data in such a way that a combination of subcarriers used for the transmission of the frame and / or used time slots of the transmission resource forms a transmission pattern characterizing the nature of the data.
- the base station selects the transmission pattern as a function of the type of data to be transmitted from a set of previously defined transmission patterns.
- a further embodiment of the method according to the invention is characterized in that, for an allocation of a transmission resource for a transmission of data between a first base station and a terminal, the terminal for each transmission resource accessible to the terminal has a Channel quality of the respective transmission resource characterizing ⁇ nenden measured value and averages to the first base station ⁇ . Furthermore, the terminal for each of the Endge ⁇ advises accessible transmission resource determines a JE the stays awhile transmission resource from a used adjacent Ba ⁇ sisstation used transfer pattern.
- the transfer pattern is formed by a combination of used for the transmission of the adjacent base station sub-carriers and / or time slots used in the transmission resource, wherein the transmission pattern characterizes the type of data, and wherein the neighboring base station to be transmitted the Sprinttra ⁇ diffraction pattern in dependence on the type of Select data from a set of previously defined transmission patterns.
- the terminal transmitted for each terminal accessible to the transmission resource in addition to the erstoff ⁇ th, the channel quality of the respective transmission resource characterizing reading the determined transmission pattern of the first base station.
- the first base station assigns a suitable transmission resource to the terminal based on the transmitted measured values and transmission patterns with respect to the transmission resources accessible to the terminal.
- the invention relates to a base station and a terminal for carrying out the method, a transmission pattern and a corresponding radio communication system.
- the invention has the advantage that inter-cell interference is avoided without the need for separate synchronization or signaling between base stations.
- the interference avoidance is rather decentralized on the basis of measurements made by terminal devices of transmission patterns. The probability of intercell interference is thus considerably reduced.
- Shares of the transmission resource unused due to the choice of a transfer pattern for over ⁇ transmission of data between a first base station and a first terminal can be utilized overall from other terminals. This is the case in particular, since the other terminals are usually located elsewhere than the first terminal and thus have a different attenuation aufwei ⁇ sen. A further terminal in a neighboring cell can thus recognize the transmission pattern used by the first base station despite the use of the portions of the transmission resource not used by the first base station by other terminals.
- Figure 1 Example scenario with two base stations and two terminals
- FIG. 4 shows an example scenario for using unused resources in transmission patterns
- traffic classes are defined, wherein a traffic class is a specific type of data to be transmitted represents. These traffic classes are defined for example based on the length of belonging to a transmission data packets, and a probability of about meh ⁇ eral frame sustained transmission at constant DA tenmenge per data packet.
- the traffic classes can be derived from both the actual amount of data to be transmitted per packet and the type of application. Examples of different applications are destructivesver ⁇ connection (constant traffic, small amounts of data) or video streaming (constant traffic, high volumes of data).
- Each traffic class is represented by a carry pattern characterizing the type of data to be transmitted.
- the base station selects the transmission pattern as a function of the
- Type of data to be transmitted from a set of previously defined transmission patterns For a call connection, the base station thus selects a different transmission pattern ⁇ than for a video streaming connection.
- ver ⁇ drives the terminal as follows: for an assignment of a About ⁇ tragungsressource for a transfer of data between a first base station and a terminal transmits the terminal for each available to the terminal effetsres ⁇ source ( resl, res2) a measured value characterizing the channel quality of the respective transmission resource (resl, res2) to the first base station, for example a channel quality indicator, which represents the signal-to-noise-plus-interference ratio.
- the terminal determines one from an adjacent, the respective override transmission resource (resl, res2) using base station used transmission pattern (pl, p2). Following the terminal for each transmission resource accessible to him the determined channel quality indicator and the transmission pattern and respectively determined (pl, p2) sends to the first Basissta ⁇ tion. Based on the transmitted measured values and transmission patterns (pl, p2) relative to the transmission resources available to the terminal (resl, res2), the first Basissta ⁇ tion the terminal an appropriate transmission resource (resl, res2) to.
- the method thus allows for the case of a or more ⁇ rer strong interfering neighboring base stations, a prediction on the type of the respectively next frame contagion Henden transmission of neighboring base stations on the accessible for the terminal transmission resources. In this case, it does not matter which neighboring base station will transmit with a specific probability resulting from the respective transmission pattern on which transmission resource.
- the own base ⁇ station the terminal based on the transmitted from the terminal ⁇ mitted list of possible transmission resources and that of the adjacent Base stations used to select and assign a suitable transmission resource for the terminal.
- FIG. 1 shows an example scenario with two adjacent base stations BS1, BS2 and two terminals UE1, UE2.
- a first base station BS1 defines a first radio cell c1
- a second base station B2 defines a second radio cell c2 adjacent to the first radio cell c1.
- the first base station BS1 transmits data on a first transmission resource resl to a first terminal UE1
- the second base station BS2 transmits data on a second transmission resource res2 to a second terminal UE2.
- the terminals UE1, UE2 are located each at the cell boundaries of the radio cells cl, c2.
- the proximity of the terminals UEL, UE 2 and the ge ⁇ directed at her transmissions resl on the transmission resources, res2 occur at the cell boundaries to Interzell- interference if.
- FIG. 2 shows an example of transmission resources resl, res2 and transmission patterns p1, p2 for the example scenario illustrated in FIG.
- the time t is plotted on the x-axis and the frequency f on the y-axis.
- the subdivision of the coordinate system shown corresponds to a Eintei ⁇ development in time slots (x-axis) and subcarrier (y-axis).
- the illustrated scenario represents a time frame with two frames frl, fr2 within which data is transmitted from a first base station on a first transmission resource resl to a first terminal.
- a second Basissta ⁇ tion transmits parallel data at a second transmission resource ⁇ res2 to a second terminal.
- the first Sprinttra ⁇ supply resource resl is formed by a first and a second subcarrier sfl, sf2 and by a first group of time slots ⁇ ts_resl.
- the second transmission resource res2 is formed by a third and a fourth subcarrier sf3, sf4 and by a second group of time slots ts_res2.
- the first and second subcarriers sfl, sf2 are arranged adjacent to the frequency band f, and the third and fourth subcarriers sf3, sf4 are also adjacent.
- the first base station transmits a large amount of data to the first terminal, while the second base station transmits a low data ⁇ amount of the second terminal.
- the first Basisstati on ⁇ transmits the data in a first frame frl on the first transmission resource resl such that a first Ü bertragungsmuster pl is formed.
- the first transmission pattern ⁇ pl arises in that the first base station for transmitting the data in a first time slot tsl the first subcarrier sfl and in a second time slot ts2 uses the second subcarrier sf2.
- the first Basisstati ⁇ repeated on this type of transmission, so that the first transmission pattern PL obtained as shown in FIG. 2
- the first base station has selected the first transmission pattern pl before the beginning of transmission of the data due to the kind of data to be transmitted among a set of transmission patterns.
- the first transmission pattern p1 corresponds to a high amount of data to be transmitted, the transmission of which is also likely to continue in a second frame fr2 following the first frame fr1.
- Base station transmits data in the first frame frl on the second transmission resource resl, which extends over the second group of time slots ts_res2 and the third and fourth subcarriers sf3, sf4.
- the second base station selects a second transmission pattern p2 before the transmission of the data, which differs from the first transmission pattern p1.
- the second transmission pattern p2 is produced by the second base station transmitting data on the third subcarrier sf3 during a fifth and sixth time slot ts5, ts ⁇ , in order subsequently to transmit data on the fourth subcarrier sf4 during a seventh and eighth time slot ts7, ts8 ,
- the second transmission pattern p2 thus formed characterizes a small amount of data in the illustrated example, the transmission of which is also likely to continue in the second frame fr2 following the first frame frl.
- the first base station again transmits pl using the first transmission pattern, the second base station in turn transmits using the second transmission pattern p2.
- Figure 3 shows the allocation of the transmission resources in the example scenario of FIG 1. It is the assumption that the first base station allocates the first terminal, the first supply Sprinttra ⁇ resource resl. Since a large amount of data is transmitted both in the first frame frl and in the subsequent second frame fr2, the first base station selects the first transmission pattern pl for transmission on the first transmission resource resl in the first and second frames frl, fr2.
- the second terminal first measures for each said second terminal accessible transmission resource a channel quality of the respective transmission resource characterizing ⁇ nenden measured value, such as a Channel Quality indica tor, which represents the signal-to-noise-plus-interference ratio , Furthermore, the second terminal determines, for each transmission resource accessible to the second terminal, a transmission pattern used by an adjacent base station using the respective transmission resource . In the illustrated in the figures, the second terminal determines the first transmission pattern PL, for example, for the first unforeseensres ⁇ source resl.
- This first transmission pattern p1 used by the first base station indicates the transmission of a large amount of data for the current first frame frl. Furthermore, the first transmission pattern pl suggests that also in the following second frame fr2 much data will bear on the first transmission resource resl about ⁇ with high probability, for example because the transmission of the first base station is a video streaming application.
- Liche transmission resource determined the Channel Quality Indicator as well as the respectively determined transmission pattern , in particular the transmission pattern p1 for the first transmission resource p1, to the second base station.
- Basie ⁇ rend on the transmitted measured values and transmission patterns with respect to the access terminal to the second transmission resources, the second base station the second terminal to an appropriate transmission resource, in the illustrated example, the second transmission resource res2 for the two ⁇ th frame fr2. In this way disturbing intercell interference in the Zeilgrenz Symposium be avoided.
- Excluding the first transmission pattern pl it would be the second Basisstati ⁇ on not possible, a statement about a likely to ⁇ future resource allocation of the first transmission resource to meet resl.
- the second base station ⁇ would then assign the second terminal, the first Neillsres ⁇ source resl, although even the first base station of the neighboring cell bertragungsressource large amounts of data on said first Ü transmits resl. There would inevitably be too much disturbing intercell interference.
- the inventive method avoids this effect without a direct Sig ⁇ alization or other complicated synchronization between the first and the second base station is necessary.
- the second terminal transmits the determined channel quality indicator as well, and the respectively determined Mattertra ⁇ diffraction pattern is only accessible to a selection of the second terminal transmission resources to the second base station.
- the transmission resources which are determined by the second terminal as best transmission resources may be, for example, the transmission resources which are determined by the second terminal as best transmission resources.
- FIG. 4 shows, for the example scenario, how unused portions of the relevant transmission resources resl, res2 can be used by other terminals due to the use of transmission patterns p1, p2. It is true the assumption that, for example, a third terminal is indeed in one of the two defined by the first and the second base station radio cells and thus occupies portions of the transmission resources of the first or the second base station, but that the third terminal in the re ⁇ gel located elsewhere than the first and second terminal ⁇ device and thus has a different attenuation than the first and the second terminal. Transmissions between the first or the second base station and the third terminal thus do not affect the perception of the transmission pattern resl, res2 used by the first or second base station by a fourth terminal located in an adjacent radio cell.
- the third terminal which is located, for example, in the first radio cell of the first base station, is assigned the second time slot ts2 in the first subcarrier sfl, and the third time slot ts3 in the second subcarrier sf2 of the first transmission resource resl, these portions being assigned the first transmission resource resl represent the unused portions of the first transmission resource resl due to the first transmission pattern pl.
- the first short data sdl to be transmitted on these portions of the first transmission resource resl represent only a small amount of data, for example short messages, which can be transmitted in one or two time slots.
- they are transmitted in a ninth time slot ts9 on the fourth subcarrier sf4 and in a tenth time slot ts10 on the third subcarrier sf3.
- the transmission patterns p 1, p 2 shown in the figures represent only two possible variants. Other combinations, for example with respect to only one subcarrier in the case of several successive time slots, or even on a larger number of subcarriers than in the example shown, are conceivable.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006032495A DE102006032495A1 (de) | 2006-07-13 | 2006-07-13 | Verfahren und Vorrichtung zur Vermeidung von Interferenzen in einem zellulären Funkkommunikationssystem |
PCT/EP2007/056809 WO2008006767A1 (de) | 2006-07-13 | 2007-07-05 | Übertragungsmuster für die übertragung von daten in einem funkkommunikationssystem |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2044744A1 true EP2044744A1 (de) | 2009-04-08 |
Family
ID=38596331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07765808A Withdrawn EP2044744A1 (de) | 2006-07-13 | 2007-07-05 | Übertragungsmuster für die übertragung von daten in einem funkkommunikationssystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100027500A1 (de) |
EP (1) | EP2044744A1 (de) |
CN (1) | CN101491048B (de) |
DE (1) | DE102006032495A1 (de) |
WO (1) | WO2008006767A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SG171993A1 (en) | 2008-12-08 | 2011-07-28 | Gilead Connecticut Inc | Imidazopyrazine syk inhibitors |
PT2716157T (pt) | 2008-12-08 | 2016-08-23 | Gilead Connecticut Inc | Imidazopirazinas ¿ inibidores de syc |
US20140029529A1 (en) * | 2012-07-25 | 2014-01-30 | Qualcomm Incorporated | Asymmetric radio access network (ran) resource allocation in ran sharing arrangement |
CN106922022A (zh) * | 2015-12-25 | 2017-07-04 | 华为技术有限公司 | 上行业务资源调度方法、设备和系统 |
WO2020172431A1 (en) | 2019-02-22 | 2020-08-27 | Gilead Sciences, Inc. | Solid forms of condensed pyrazines as syk inhibitors |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4675863A (en) * | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
FI97838C (fi) * | 1992-05-06 | 1997-02-25 | Nokia Telecommunications Oy | Solukkoverkkojärjestelmä |
US6895248B1 (en) * | 1998-06-02 | 2005-05-17 | The Board Of Trustees Of The Leland Stanford Junior University | Dynamic resource allocation and media access control for a wireless ATM network |
US6947748B2 (en) * | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
US6778512B2 (en) * | 2000-12-20 | 2004-08-17 | Motorola, Inc. | Communication system that provides extra protection when transmitting critical data |
KR100866237B1 (ko) | 2004-01-20 | 2008-10-30 | 삼성전자주식회사 | 고속 무선 데이터 시스템을 위한 변조 차수 결정 장치 및 방법과 그 데이터 수신 장치 및 방법 |
US8014264B2 (en) | 2004-05-01 | 2011-09-06 | Neocific, Inc. | Methods and apparatus for communication with time-division duplexing |
US20070104206A1 (en) * | 2005-11-10 | 2007-05-10 | Mark Pecen | Method and apparatus for allocating channels for data communication in a radio communication system |
EP1985066A4 (de) * | 2006-02-17 | 2017-04-12 | Telefonaktiebolaget LM Ericsson (publ) | Verfahren und einrichtung zur steuerung von datenflüssen in kommunikationsendgeräten |
US8687542B2 (en) * | 2006-05-18 | 2014-04-01 | Qualcomm Incorporated | Method of improving throughput in a system including sticky assignments |
-
2006
- 2006-07-13 DE DE102006032495A patent/DE102006032495A1/de not_active Withdrawn
-
2007
- 2007-07-05 EP EP07765808A patent/EP2044744A1/de not_active Withdrawn
- 2007-07-05 US US12/309,262 patent/US20100027500A1/en not_active Abandoned
- 2007-07-05 WO PCT/EP2007/056809 patent/WO2008006767A1/de active Application Filing
- 2007-07-05 CN CN200780026501.5A patent/CN101491048B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2008006767A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2008006767A1 (de) | 2008-01-17 |
US20100027500A1 (en) | 2010-02-04 |
DE102006032495A1 (de) | 2008-02-07 |
CN101491048B (zh) | 2015-06-17 |
CN101491048A (zh) | 2009-07-22 |
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