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WO2012040877A1 - Signaux de référence dans un système de communication - Google Patents

Signaux de référence dans un système de communication Download PDF

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Publication number
WO2012040877A1
WO2012040877A1 PCT/CN2010/001531 CN2010001531W WO2012040877A1 WO 2012040877 A1 WO2012040877 A1 WO 2012040877A1 CN 2010001531 W CN2010001531 W CN 2010001531W WO 2012040877 A1 WO2012040877 A1 WO 2012040877A1
Authority
WO
WIPO (PCT)
Prior art keywords
muting
accordance
signalling
service area
pattern
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.)
Ceased
Application number
PCT/CN2010/001531
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English (en)
Other versions
WO2012040877A9 (fr
Inventor
Xiaoyi Wang
Deshan Miao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Solutions and Networks Oy
Original Assignee
Nokia Siemens Networks Oy
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 Nokia Siemens Networks Oy filed Critical Nokia Siemens Networks Oy
Priority to PCT/CN2010/001531 priority Critical patent/WO2012040877A1/fr
Publication of WO2012040877A1 publication Critical patent/WO2012040877A1/fr
Publication of WO2012040877A9 publication Critical patent/WO2012040877A9/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies

Definitions

  • This disclosure relates to reference signalling, and more particularly, but not exclusively, to signalling of resource patterns.
  • the patterns can be used in communications systems by devices such as base stations and mobile communication devices for communication of information associated with signalling resources.
  • a communication system can be seen as a facility that enables communication sessions between two or more entities such as fixed or mobile communication devices, base stations, servers and/or other communication nodes.
  • a communication system and compatible communicating entities typically operate in accordance with a given standard or specification which sets out what the various entities associated with the system are permitted to do and how that should be achieved.
  • the standards, specifications and related protocols can define the manner how communication devices can access the communication system and how various aspects of communication shall be implemented between communicating devices.
  • a communication can be carried on wired or wireless carriers. In a wireless communication system at least a part of the communication between at least two stations occurs over a wireless link.
  • wireless systems include public land mobile networks (PLMN) such as cellular networks, satellite based communication systems and different wireless local networks, for example wireless local area networks (LAN) .
  • PLMN public land mobile networks
  • LAN wireless local area networks
  • a wireless system can be divided into cells, and hence these are often referred to as cellular systems.
  • a cell is provided by a base station. Cells can have different shapes and sizes. A cell can also be divided into sectors. Regardless of the shape and size of the cell providing access for a u access is provided via a sector of a c ⁇ area can be called radio service are Neighbouring radio service areas typical! a communication in an area can listen tc station .
  • a user can access the communication syste limbate communication device.
  • a commun user is often referred to as user equipme
  • a communication device is provided with a receiving and transmitting arrangement f ' cations with other parties.
  • a is used for enabling receiving and transit tions such as speech and data.
  • wirel nication device provides a transceiver s municate with another communication de base station of an access network and/or ment.
  • the communication device may acces by a station, for example a base station, receive communications on the carrier.
  • An example of communication systems atten increased demands for capacity is an arc ing standardized by the 3rd Generation
  • Various signalling information is sent be and mobile devices.
  • a base station refers sent from a base station to mobile devi Information about the resources to be use nailing may need to be communicated to ⁇ signalling in a service area.
  • a channel state information refer is proposed to implement downlink channel a CSI-RS pattern has been proposed for ⁇ formation associated with the reference prove channel estimation accuracy, Physd Channel (PDSCH) resource element (RE) mu to avoid interference to the channel stat ence signals (CSI-RS) by neighbouring se cells and/or sectors.
  • the muting is a the neighbour areas (sectors or cells) a the muting for a sector or cell means source elements of the neighbours.
  • serving area should know the current nur it can avoid neighbour area's CSI-RS. ⁇ ing of resources of neighbouring service
  • Embodiments of the invention aim to addre the above issues.
  • tus comprising at least one processor, ai ory including computer program code, w one memory and the computer program code the at least one processor, to: generate associated with at least one radio servii comprising locations for indicating resc signalling in a first radio service area of the pattern and of clustering informa information comprising information of at ports and frequency reuse to enable comm the first radio service area to determine tion based on the pattern and said clu and use resources indicated by one or m ⁇ in the muting cluster for reference sigi radio service area and to mute resource; locations in the muting cluster.
  • muting ports comprises the number of mut information of frequency reuse comprise number.
  • the reference signalling may comp channel state information reference signa
  • clustered locations of the pattern can 1 for reference signalling. It can be det frequency reuse parameter, that at leas not belong to a full cluster, and in res dicator of an odd group can be sent or re cations of a port number can be mapped t of another port number.
  • a communication device and/or base stati trol apparatus configured to provide at bodiments can also be provided.
  • the comir comprise a user equipment, for example a
  • Figure 1 shows an example of a coramunic; below described examples of the invention
  • Figure 2 shows an example of a communicat
  • Figure 3 shows an example of controller ⁇ station;
  • Figure 4 is flowchart illustrating an emb Figures 5A to 5C and 6A to 6C show exaim terns ;
  • Figure 7 shows two examples for grouping
  • Figure 8 shows two examples for grouping accordance with a further embodiment
  • Figure 9 shows an example of scenario wl different numbers of ports.
  • FIGS 10 and 11 show embodiments where clustering information is provided.
  • An access system may b of a cellular system or another system e tion device to access a communication sys site 20 can provide one or more cells, also provide a plurality of sectors, for sectors, each sector providing a cell or All sectors within a cell can be served b tion.
  • a radio link within a sector can single logical identification belonging ' a base station can provide one or more Each mobile communication device 21 and have one or more radio channels open at t send signals to and/or receive signals source .
  • a base station 20 is typically controlleclitiste controller so as to enable o ⁇ management of mobile communication devic tion with the base station.
  • the control terconnected with other control entities troller apparatus is shown to be providec station control apparatus is typically ;
  • the radio service areas can ov> transmitted in an area can interfere wit another area.
  • the communication devices 21 can acces system based on various access techniques sion multiple access (CDMA) , or wideband examples include time division multiple quency division multiple access (FDMA) thereof such as the interleaved frequenc access (IFDMA), single carrier frequenc access (SC-FDMA) and orthogonal frequenc access (OFDMA) , space division multiple on .
  • CDMA sion multiple access
  • FDMA time division multiple quency division multiple access
  • IFDMA interleaved frequenc access
  • SC-FDMA single carrier frequenc access
  • OFDMA orthogonal frequenc access
  • Non-limiting example of the recent deve cation systems is the long-term evolutic versal Mobile Telecommunications System standardized by the 3rd Generation (3GPP) .
  • 3GPP 3rd Generation
  • LTE-Advanced further devel referred to as LTE-Advanced .
  • Non-limitin priate access nodes are a base station o for example what is known as NodeB (NB) the 3GPP specifications.
  • the LTE employ: ture known as the Evolved Universal Terr
  • WiMax Worldwide Interopera Access
  • the base stations oi are connected to a wider communications troller may be provided for coordinating access systems.
  • a ⁇ also be provided to connect to -another r work 35.
  • the other network may be any ap wider communication system may thus be more interconnect networks and the eleme: or more gateways may be provided for int networks .
  • FIG. 2 shows a schematic, partially communication device 21 that a user car tion.
  • a communication device is o user equipment (UE) or terminal.
  • An apprc nication device may be provided by an; sending and receiving radio signals.
  • N include a mobile station (MS) such as a is known as a 'smart phone', a portab] with a wireless interface card or othe: facility, personal data assistant (PDA) less communication capabilities, or any c
  • the m receive signals over an air interface 28 paratus for receiving and may transmit s: ate apparatus for transmitting radio si transceiver apparatus is designated sch 27.
  • the transceiver may be provided for e radio part and associated antenna arran arrangement may be arranged internally c mobile device.
  • a wireless communication device can be pr pie Input / Multiple Output (MIMO) anter rangements as such are known.
  • MIMO syste tennas at the transmitter and receiver digital signal processing to improve lin ity.
  • the transceiver apparatus 27 can be provided, for example at base stat tions, and the transceiver apparatus 27 ⁇ vide a plurality of antenna ports. More and/or sent where there are more antennae may comprise an array of multiple antenna ling and muting patterns can be carries numbers or port numbers of MIMO arrangeme
  • the user may control the operation of t means of a suitable user interface such . commands, touch sensitive screen or pad, or the like.
  • a device may comprise appropriate connectc wireless) to other devices and/or for cor cessories, for example hands-free equipme
  • Figure 3 shows an example of a control communication system, for example to be c controlling a station of an access syste ratus 30 can be arranged to provide conti by mobile communication devices that are of the system.
  • the control apparatus 30 provide control functions in association communication of transmission patterns a
  • the required data processing apparatus base station apparatus, a communication c appropriate station may be provided by m data processors.
  • the data processors may be of any t local technical environment, and may inc general purpose computers, special purpo: processors, digital signal processors specific integrated circuits (ASIC) , gat ⁇ processors based on multi core processor limiting examples.
  • the data processing across several data processing modules. ⁇ be provided by means of, for example, at intestinalte memory capacity can also be pi vant devices.
  • the memory or memories may able to the local technical environment mented using any suitable data storage semiconductor based memory devices, magi and systems, optical memory devices and s and removable memory.
  • Clustering information is signalled at 56 time with step 54 or at a different time formation comprises information of at J ports and frequency reuse to enable the c in the at least one radio service area t ⁇ configuration based on the signalling pal tering information.
  • a communication device within the at lea: area receives the signalling pattern at ing information at 60.
  • the communication termine at 62 a muting configuration ba signalling pattern and the clustering in indicated by one or more of the locations ter are used for a first radio service sources indicated by other locations in for at least one second radio service are
  • channel state information refer* is provided to save reference signal (RS) plement downlink channel estimation. Use has been proposed for communication of ir with the reference signalling. Examples 2, 4 and 8 CSI-RS ports are shown in
  • CSI-RS - ⁇ tion reference signals
  • PDSCH RE muting can be applied ; locations that are intended for neighbo ' tors.
  • Various parameters may need to be ⁇ ing is applied. For example, information quency reuse (FR) factor, number of CSI-R ences in the ports between neighbouring i may need to be provided and/or conside: vices.
  • FR information quency reuse
  • eNB indii locations for the serving cell/sector.
  • P cell can indicate its CSI-RS to the ui serving. The user equipment in a cell or ceive the CSI-RS location of its own eel not required that a user equipment knows or sector's CSI-RS location.
  • muting TX number use (FR) number
  • FR muting TX number
  • info FR number and/or muting Tx number can be cell-specific RRC signaling.
  • Tx transmitter
  • Tx transmitter
  • Tx m transmitter
  • embot pattern are cyclically reused.
  • the intra subframe index can then be us device, for example a user equipment list to select the muting cluster that is b this the receiving device can determine the pattern it shall use for reference si location of the serving access system c plicitly for the at least one user equ the user equipment can determine based clusters which locations are to be muted can assume that at least some resource el the PDSCH by the base station.
  • the mut ⁇ can be decided based on information of and more particularly based on informs
  • Figures 6A - 6C illustra CSI-RS location indexing scheme. It is r these are only examples that are given principle, and that any other appropriate dexing can also be used. In these Figure bers are using different indexing. In twenty CSI-RS resource element (RE) loca Downlink Shared Channel (PDSCH) are indi bers 0 to 19 in a two port pattern, in F.
  • RE resource element
  • PDSCH Downlink Shared Channel
  • index locations have indexes 0 to 9 in a four Figures 5C and 6C five CSI-RS resource el on a Physical Downlink Shared Channel (] by index numbers 0 to 4 in an eight pc group of indexes can be determined based the frequency reuse (FR) number.
  • FR frequency reuse
  • All CSI-RS indexes can be categorized ii clusters. By grouping the indexes relate between a serving cell's / sector's CSI-F pattern. For example, a user equipment CSI-RS locations in the patterns in the c ing cell's / sector's CSI-RS index is ii CSI-RS indexes 1, 2, and 3 form a group, cell's / sector's CSI-RS index is 1, the
  • frequency reuse number may allow compatil: future systems and standards, such as c point transmission and reception (CoMP flexibility, the herein described group use of different muting FR numbers and ⁇ FR number can be different from 3, for ex
  • a user e aware of the Tx number, for example by b RS Tx number of the serving cell / sectc ment can then determine the number of CSI the Tx number.
  • n is an integer
  • Group n is the index set of grou] N is the number of CSI-RS ind
  • resources elements in group n are muted e source element of the user equipment
  • An indication for example a bit or anotl to indicate an "odd group" (cyclic tail o the indication is possible to reuse all C frequency reuse (FR) number.
  • a special group (odd group) is usee single bit indicators may be used only inside a special muting group.
  • cycle can be indicated by a single bit muting pattern is [0,1,2] or [3,4,0] for
  • T can be associated with FR number and ser index .
  • PDSCH RE muting aims to avoid interferen RS patterns.
  • determining the muting ber of neighbour radio service area cai count.
  • neighbouring cells or s ferent Tx numbers FIG. 9 illustrates E RS in a subframe where different sector
  • a strig cells or sectors have a different Tx num appropriate conversions between the diffe: For example, it is possible to convert fi example, with a nested structure, a serv index can be converted to a correspondin number.
  • the muting TX numbei serving sector's CSI-RS the CSI-RS index a corresponding muting Tx number, and t take place based on a pre-defined index Tx number.
  • Tx number a serv; and the CSI-RS index is 15 but muting T CSI-RS index 15 in 2Tx corresponds to CS case.
  • the muting patten maximum Tx number In case where multiple sectors within a different Tx numbers, the muting patten maximum Tx number. To provide this, an ac ample an eNB, informs all user equipment number (this can be same or different f] tor's CSI-RS Tx number) and muting FR nui means of RRC signalling. A user equipmer formation can then map serving sector' s C
  • Nl is the CSI-RS location number ac rent Tx number
  • N2 is the CSI-RS cording the muting Tx number.
  • Muting grouping can then be done using N input.
  • the muting pattern is then decide
  • CSI-RS i formed in accordance with a rule betwee numbers. Based on a nested structure of ⁇ ports / 4 ports / 2 ports, this can be us tify a user equipment in a cooperative se tion or locations in the pattern should b
  • the eNB can broadcast only this muting cell-specific parameter.
  • muting pattern can be tions [0-4] in figure 5C.
  • the muting Tx number should be equa the CSI-RS Tx number of the serving cell/ an assumption that the serving cell/sect the muting group.
  • a serving sector is 4 Tx, then there a ing patterns. In a case where neighbour number equals 4, the maximum pattern shal muting 4 Tx number. If it is supposed tha CSI-RS is located among positions [0-4] muting pattern would be [0-4]. In a cas cell maximum Tx number equals 8, the maxi configured with muting 8 Tx number. If the serving sector CSI-RS is located amon [5-9] in figure 5B, then muting pattern 3 ⁇ 4
  • the serving sector is 2 Tx, then three possible. In a case where neighbouring ce equals 2, the maximum pattern can be conf Tx number. If it is supposed that the s
  • pattern shown in figure 5 be set as a multiple of 5, such as 5 or : pattern shown in figure 5A, FR number c, multiple as 5, such as 5, 10, 15 or 20.
  • each cell CSI-RS inde differently. All possible CSI-RS REs can clusters according to pre-defined rules. which includes the cell's / sector's own the final muting pattern.
  • serving sector is 2Tx, and it's and the muting TX number is 4.
  • mod 10 5.
  • the muting patte. based Index 5 under 4Tx case. Since ir group consisting of indexes [3, 4, 5], tl RS indexing [3,4] in 4Tx case of Figure 5
  • additional information can be used to set.
  • 8 TX pattern in fi sets can be defined, [0 1 2], [3 4 0]. ! can be found from two pattern sets.
  • pattern sets [0 1 [10,11,12] [15,16,17] [9 13 14] [18 19 formation can be utilized to indicate inc
  • ments may be implemented in hardware or cuits, software, logic or any combinatic ments of the inventions may thus be pract ponents such as integrated circuit modu.
  • integrated circuits is by and large a hi ess.
  • Complex and powerful software tool converting a logic level design into a s design ready to be etched and formed on strate .
  • the above described embodiments may pre tages. For example, all of the CSI-RS in Flexibly configurable frequency reuse nun In principle any number of muting frequer ployed. Different Tx configurations can Muting configuration does not cause unne head .

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

Abstract

L'invention porte sur des procédés et un appareil servant à commander une signalisation de référence. Un motif de signalisation qui est associé à au moins une zone de desserte radio est généré, le motif comprenant des emplacements servant à indiquer des ressources de signalisation de référence dans une première zone de desserte radio. Le motif et des informations de regroupement sont signalés dans la zone de desserte radio. Les informations de regroupement comprennent des informations de ports de silence et/ou de réutilisation de fréquence pour permettre à des dispositifs de communication dans la zone de desserte radio de déterminer une configuration de silence. Des ressources indiquées par un ou plusieurs des emplacements dans le groupe de silence sont utilisées pour une signalisation de référence dans une première zone de desserte radio tandis que des ressources indiquées par d'autres emplacements dans le groupe de silence sont réduites au silence.
PCT/CN2010/001531 2010-09-30 2010-09-30 Signaux de référence dans un système de communication Ceased WO2012040877A1 (fr)

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PCT/CN2010/001531 WO2012040877A1 (fr) 2010-09-30 2010-09-30 Signaux de référence dans un système de communication

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Application Number Priority Date Filing Date Title
PCT/CN2010/001531 WO2012040877A1 (fr) 2010-09-30 2010-09-30 Signaux de référence dans un système de communication

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101635950A (zh) * 2009-08-14 2010-01-27 中兴通讯股份有限公司 一种确定小区参考信号位置的方法及装置
WO2010106725A1 (fr) * 2009-03-16 2010-09-23 パナソニック株式会社 Récepteur radio, émetteur radio, et procédé de radiocommunications

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010106725A1 (fr) * 2009-03-16 2010-09-23 パナソニック株式会社 Récepteur radio, émetteur radio, et procédé de radiocommunications
CN101635950A (zh) * 2009-08-14 2010-01-27 中兴通讯股份有限公司 一种确定小区参考信号位置的方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI.: "Specification Impact of Muting.", 3GPPTSG RAN WG1 MEETING #62 RL-104291, 27 August 2010 (2010-08-27) *

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