[go: up one dir, main page]

WO2013128370A1 - Procédé et appareil pour fournir une ressource de découverte dans un réseau de communication mobile - Google Patents

Procédé et appareil pour fournir une ressource de découverte dans un réseau de communication mobile Download PDF

Info

Publication number
WO2013128370A1
WO2013128370A1 PCT/IB2013/051530 IB2013051530W WO2013128370A1 WO 2013128370 A1 WO2013128370 A1 WO 2013128370A1 IB 2013051530 W IB2013051530 W IB 2013051530W WO 2013128370 A1 WO2013128370 A1 WO 2013128370A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
discovery
frame structure
propagation delay
network
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/IB2013/051530
Other languages
English (en)
Inventor
Sami-Jukka Hakola
Matti Pikkarainen
Ville Vartiainen
Anna Pantelidou
Juha Pekka KARJALAINEN
Timo Koskela
Samuli Turtinen
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.)
Renesas Electronics Corp
Original Assignee
Renesas Mobile Corp
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 Renesas Mobile Corp filed Critical Renesas Mobile Corp
Publication of WO2013128370A1 publication Critical patent/WO2013128370A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals

Definitions

  • the invention relates to radio communication devices.
  • proximity- based applications and services have been developed. These applications and services are expected to become very popular. In proximity based services at least two devices or users are close to each other and communicate with each other. These applications and/or services naturally generate traffic between devices. The communication may be between two or more users and users may be ordinary end users, service providers or other devices.
  • Examples of such applications and services include, social applications, local advertising, multiplayer gaming, network offloading, smart meters, public safety and similar.
  • social applications include exchange of files, photos, messages and similar, voice over IP conversation, video streaming, video conferencing or similar.
  • Local advertising may be used for providing information on different services in the neighborhood.
  • Network offloading may be used when an opportunistic proximity offload potential exists.
  • the first device initiates a transfer of the media flow from the macro network to a proximity communications session with the second device conserving macro network resources while maintaining the quality of user experience for the media session.
  • the communication is not necessarily initiated by the device but can also be initiated by the network.
  • Further applications and services are continuously developed the only common nominator required is the proximity of communicating parties even if there is no explicit definition for the distance between communicating devices.
  • Bluetooth short distance communication network technologies
  • a commonly known solution is to use short distance communication network technologies, such as Bluetooth, for providing proximity services.
  • this has also drawbacks the major drawback being that it cannot be controlled by the network operator.
  • Bluetooth and other short distance communication means are not always turned on as they require energy.
  • it is desirable to provide proximity based services using the same communication channel with ordinary phone calls and data communication.
  • this radio-based discovery process used for providing proximity services needs also to be coupled with the system architecture and security architecture of a mobile network.
  • This allows the mobile operators to retain control of the device behavior. For example, who can emit discovery signal. Furthermore, the operator may want to control what is the structure of these signals and when they are sent.
  • the problem in providing such service using mobile communication network is how to fit it into the same communication resources with the other communication in a manner that the discovery process and the relating communication using discovery resources do not cause interference to the downlink and/or uplink communication that is transmitted in the same multiplex with the discovery related communication.
  • the present invention discloses a method for providing a discovery resource in a mobile communication network.
  • a discovery area for at least one service is determined.
  • the discovery area comprises at least one cell.
  • the largest propagation delay for each cell in the determined discovery area is determined.
  • the frame structure for discovery area communication is then configured in accordance with the largest propagation delay in the determined discovery area.
  • the frame structure comprises a plurality of sub frames.
  • the frame structure is configured in accordance with the determined largest propagation delay in the cells belonging to the discovery area.
  • a guard period in the end of the subframe used for the discovery resource is provided.
  • a guard period in the beginning of the subframe used for the discovery resource is provided.
  • a discovery resource is configured to follow a random access channel communication.
  • the guard period is not needed in the beginning of the frame as there is no uplink communication preceding the discovery resource.
  • the guard period is configured as a maximum propragation value within the discovery area.
  • the largest propagation delay is obtained by requesting and receiving it from at least one cell.
  • the present invention may be implemented as an apparatus, such as a network element of a mobile communication network.
  • the network element comprises a network connection to at least one mobile network cell, a memory configured to store communication parameters and a processor configured to determine and execute communication parameters for said at least one mobile network cell.
  • the network element is configured to perform the above mentioned embodiments.
  • the present invention may be implemented as computer software that comprises computer program code that is executed by the processor of the network element.
  • the network element is a part of a system comprising a plurality of cells for mobile communications.
  • the network is an LTE (Long Term Evolution) or LTE-A (Long Term Evolution Advanced) network.
  • the invention described above discloses a method and required hardware components for implementing network controlled discovery communications that do not interfere with the conventional communication of the mobile network.
  • Some Embodiments of the present invention are suitable for different types of mobile networks and are scalable for different types of network configurations.
  • Some Embodiments of the present invention do not set limits for the discovery area like short distance networks but the network operator may determine the discovery area in accordance with the actual need and the network design.
  • Fig. 1 is a block diagram of an embodiment according to the present invention
  • Fig. 2 is a flowchart of an embodiment according to the present invention
  • Fig. 3 is an illustration of a frame structure according to an embodiment of the present invention.
  • FIG. 1 is a block diagram of an embodiment of the present invention.
  • a network element 10 is arranged to communicate with cells 14a - 14d of a mobile network.
  • the network element 10 comprises a processor 11, a memory 12 and a network connection 13.
  • the network connection 13 is capable of communicating with cells 14a - 14d.
  • this connection is a fixed connection but also wireless connections may be used.
  • Cells 14a - 14d are cells of a mobile communication network.
  • eNodeB's in an LTE network The present invention is typically used in a network that has synchronized downlink and uplink transmission, such as an LTE-network.
  • the network element 10 is configured to perform the inventive method in accordance with figure 2 that is explained below.
  • the processor 11 is configured to determine a discovery area for services that are used. The determination may be done manually or the network element can be configured to monitor discovery request made in the whole network and then based on statistical analysis to divide the network into suitable discovery areas automatically. Automatic configuration may be assisted by a system administrator.
  • the network element 10 is configured to follow downlink frame timing and to adjust guard periods to the frame structure in accordance with the largest propagation delay in the neighborhood.
  • the allocated discovery resources are multiplexed with resources used for normal cellular communications of the network.
  • the multiplexing can be in time and/or frequency domain.
  • the guard periods are provided in time domain in the beginning and the end of each subframe allocated for discovery resources. This facilitates appropriate discovery resource communication so that different devices that are located in different distances from the cell do not cause interference to other communication.
  • the required length of the guard periods is determined by the propagation delay of the devices in the discovery area. As the different devices are located at different distances from the cell or cells they are connected to they all have respective propagation delay from the device to the cell. If no impact to any cellular user either in previous or next subframe is desired the guard periods for the discovery signal should correspond with largest propagation delay of connected devices. It should be noticed that it is not necessary to use the largest propagation delay but a shorter period may be chosen. However, shorter periods are not sufficient to guarantee interference free discovery communication and are sufficient only for reducing the interference.
  • FIG 1 a further embodiment of the invention is disclosed.
  • Signaling 15 and 16 discloses an arrangement wherein the network element 10 communicates with cell 14a. Corresponding communication is performed also with all cells belonging to the same discovery area, such as cells 14b - 14d in figure 1, however, for the sake of the clarity only one cell is explained here.
  • the network in the example is an LTE network wherein max (TA/2)-value (Timing Adjustment) corresponds with the largest propagation delay.
  • the (TA/2)-value may be requested and received in accordance with the invention.
  • the LTE network is just an example used in the embodiment of figure 1. Different network types may also be used. Thus, instead of (TA/2)-value differently named value or different mechanism for acquiring largest propagation delay may be used.
  • a request for max (TA/2)-value in a cell is sent.
  • the max (TA/2)-value in a cell is received.
  • the requested value is then used for configuring frame structure for the cell with proper guard periods as discussed above.
  • the configuring the frame structure may comprise further selections, such as the frame format. These further selections may depend on the determined discovery area, included cell types, or other parameters that need to be configured.
  • Figure 2 discloses a method according to an embodiment of the present invention.
  • a discovery area is determined, step 20.
  • the determination may be manual selection of a skilled person or determined automatically by using discovery communication analysis.
  • the use of discovery resources is measured and then the areas are determined so that the effective use of resources is guaranteed.
  • the largest propagation delay within the discovery area is requested for each cell, step 21.
  • the frame structure is determined accordance with the largest propagation delay in the whole discovery area, step 22.
  • guard periods corresponding with (TA/2)-value are provided in the beginning and end of the each subframe allocated for discovery process and resources.
  • the length of the guard period is determined in accordance with the largest propagation delay in the discovery area.
  • the allocated resource is used for communication, step 23.
  • the subframe structure utilizes a longer structure by not shrinking the subframe from the beginning of the subframe when the discovery or D2D (Device to device) communications resource is taking place on the same resources as RACH (Random Access Channel) in previous uplink subframe.
  • RACH Random Access Channel
  • This connection can be specified as an implicit mapping between the discovery resource allocation and known RACH resources by devices. This is applicable in case there is an uplink subframe in neighbor cells simultaneously with the mentioned RACH resources in the cell in question.
  • This embodiment may be used in the subframe following the special subframe in TDD-system, basically when discovery takes place in subframe #2 in the frame.
  • Figure 3 discloses an illustration of a frame structure according to an embodiment of the present invention.
  • four subframes 30 - 33 are arranged in accordance with DL TX (Downlink Transmitter) timing.
  • DL RX Downlink Receiver
  • the propagation delay 34 is small.
  • the propagation delay 35 is large. In the figure this is assumed as the largest propagation delay.
  • the discovery process follows the DL TX timing.
  • the discovery transmission would cause interference to the transmissions as illustrated by the hatched area in rows 2 and 3 respectively.
  • the hatched are equals to the propagation delay of the corresponding row.
  • discovery communication 36 is sent according to a conventional method. From this figure it can be seen the above explained interference in the beginning of the transmission.
  • a discovery communication according to the present invention is disclosed.
  • the discovery communication is sent in the subframe 31 and it is preceded and followed by subframes 30, 32 used for conventional communication, as can be seen from the figure.
  • the discovery communication 38 is preceded by guard period 37 in order to avoid the above described interference related to the downlink communication.
  • the uplink communication is not illustrated in the figure, however, a guard period 39 is arranged after discovery communication 38 in order to avoid the corresponding interference in the uplink transmission.
  • the above mentioned method may be implemented as computer software which is executed in a network element, such as the network element disclosed above.
  • the software When the software is executed in a computing device it is configured to perform the above described inventive method in order to facilitate discovery resources in a mobile communication network.
  • the software is embodied on a computer readable medium so that it can be provided to the computing device.
  • the components of the exemplary embodiments can include computer readable medium or memories for holding instructions programmed according to the teachings of the present inventions and for holding data structures, tables, records, and/or other data described herein.
  • Computer readable medium can include any suitable medium that participates in providing instructions to a processor for execution. Such a medium can take many forms, including but not limited to, nonvolatile media, volatile media, transmission media, and the like.
  • Non-volatile media can include, for example, optical or magnetic disks, magneto -optical disks, and the like.
  • Volatile media can include dynamic memories, and the like.
  • Transmission media can include coaxial cables, copper wire, fiber optics, and the like.
  • Transmission media also can take the form of acoustic, optical, electromagnetic waves, and the like, such as those generated during radio frequency (RF) communications, infrared (IR) data communications, and the like.
  • RF radio frequency
  • IR infrared
  • Common forms of computer-readable media can include, for example, a floppy disk, a flexible disk, hard disk, magnetic tape, any other suitable magnetic medium, a CD-ROM, CD ⁇ R, CD ⁇ RW, DVD, DVD-RAM, DVD ⁇ RW, DVD ⁇ R, HD DVD, HD DVD-R, HD DVD-RW, HD DVD-RAM, Blu- ray Disc, any other suitable optical medium, a RAM, a PROM, an EPROM, a FLASH-EPROM, any other suitable memory chip or cartridge, a carrier wave or any other suitable medium from which a computer can read.

Landscapes

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

Abstract

L'invention porte sur un agencement pour produire un processus et des ressources de découverte commandés par un réseau dans un réseau d'une manière telle que l'utilisation d'un processus de découverte n'interfère pas avec les autres ressources de la cellule. Dans l'agencement, une structure de trame est sélectionnée, de telle sorte que le processus de découverte n'interfère pas avec les ressources de liaison montante et/ou de liaison descendante de la cellule. Ceci est produit par l'utilisation d'au moins une période de garde dans la sous-trame utilisée pour des ressources de découverte, configurée en fonction du plus grand temps de propagation déterminé dans la cellule.
PCT/IB2013/051530 2012-02-28 2013-02-26 Procédé et appareil pour fournir une ressource de découverte dans un réseau de communication mobile Ceased WO2013128370A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1203455.9A GB2499803B (en) 2012-02-28 2012-02-28 Method and apparatus for providing a discovery resource
GB1203455.9 2012-02-28

Publications (1)

Publication Number Publication Date
WO2013128370A1 true WO2013128370A1 (fr) 2013-09-06

Family

ID=45991864

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/051530 Ceased WO2013128370A1 (fr) 2012-02-28 2013-02-26 Procédé et appareil pour fournir une ressource de découverte dans un réseau de communication mobile

Country Status (2)

Country Link
GB (1) GB2499803B (fr)
WO (1) WO2013128370A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015047144A1 (fr) * 2013-09-27 2015-04-02 Telefonaktiebolaget L M Ericsson (Publ) Procédés, appareils et produits-programmes informatiques de génération de périodes de garde fractionnelles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12408131B2 (en) 2020-03-31 2025-09-02 Telefonaktiebolaget Lm Ericsson (Publ) Network node, device to device user equipment, and methods in a radio communications network

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2190539A1 (fr) * 1995-12-15 1997-06-16 Seppo Alanara Terminal mobile et systeme utilisant un format d'intervalle de temps abrege de longueur variable pour voie de retour a commande numerique
EP1213855A1 (fr) * 2000-12-08 2002-06-12 Lucent Technologies Inc. Structure de trame pour des systèmes de télécommunications TDD
US20030026215A1 (en) * 1996-11-07 2003-02-06 Schafer David C. System and method for minimizing guard time in a time division duplex communication system
US20070268884A1 (en) * 2006-05-16 2007-11-22 Honeywell International Inc. Integrated infrastructure for coexistence of WI-FI networks with other networks
US20100165882A1 (en) * 2008-12-30 2010-07-01 Qualcomm Incorporated Centralized control of peer discovery pilot transmission

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8499079B2 (en) * 2008-06-23 2013-07-30 Apple Inc. Apparatus and methods for providing service discovery over alternate transports

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2190539A1 (fr) * 1995-12-15 1997-06-16 Seppo Alanara Terminal mobile et systeme utilisant un format d'intervalle de temps abrege de longueur variable pour voie de retour a commande numerique
US20030026215A1 (en) * 1996-11-07 2003-02-06 Schafer David C. System and method for minimizing guard time in a time division duplex communication system
EP1213855A1 (fr) * 2000-12-08 2002-06-12 Lucent Technologies Inc. Structure de trame pour des systèmes de télécommunications TDD
US20070268884A1 (en) * 2006-05-16 2007-11-22 Honeywell International Inc. Integrated infrastructure for coexistence of WI-FI networks with other networks
US20100165882A1 (en) * 2008-12-30 2010-07-01 Qualcomm Incorporated Centralized control of peer discovery pilot transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015047144A1 (fr) * 2013-09-27 2015-04-02 Telefonaktiebolaget L M Ericsson (Publ) Procédés, appareils et produits-programmes informatiques de génération de périodes de garde fractionnelles
US9210678B2 (en) 2013-09-27 2015-12-08 Telefonaktiebolaget L M Ericsson (Publ) Methods, apparatuses, and computer program products for generating fractional guard periods
US9973325B2 (en) 2013-09-27 2018-05-15 Telefonaktiebolaget Lm Ericsson (Publ) Methods, apparatuses, and computer program products for generating fractional guard periods

Also Published As

Publication number Publication date
GB201203455D0 (en) 2012-04-11
GB2499803A (en) 2013-09-04
GB2499803B (en) 2014-05-07

Similar Documents

Publication Publication Date Title
JP7722440B2 (ja) Ｕｅ、ｒａｎノード、及びそれらによって実行される方法
US10736054B2 (en) Random access power control method and apparatus and communication system
TWI801621B (zh) 用於控制無線通訊中的下游節點的時序的技術
JP6911832B2 (ja) デバイス・ツー・デバイス通信を制御するための装置および方法
US12382503B2 (en) Balancing RA resources between 2-step RACH and 4-step RACH
CN112840728A (zh) 用于无线网络中的小区标识的设备及方法
US12127190B2 (en) Systems and methods for non-codebook based multi-TRP PUSCH
US12262426B2 (en) Dual 5G connection mechanisms to support multi-operators with different service traffic simultaneously
JP2024170559A (ja) マルチＱｏＳプロファイル・セッションのためのサービス品質プロファイル変更
JP5945869B2 (ja) リレーノード関連測定
JP2024048386A (ja) ５ｇ ｎｒにおける非重複サブバンド全二重（ｓｂｆｄ）動作のタイミング
US11304222B2 (en) Method and apparatus for uplink scheduling
KR20170017830A (ko) 인터 캐리어 d2d 통신을 수행하기 위한 방법 및 장치
US20160135157A1 (en) Communication control device, communication control method and communication device
WO2018228345A1 (fr) Procédé et dispositif de transmission d'informations, support de stockage et processeur
JP5990844B2 (ja) スペクトル割り当て方法および装置
WO2019205024A1 (fr) Procédé de transmission de signal et dispositif de communication
WO2022205404A1 (fr) Conditions de déclenchement pour rapport de puissance
WO2022147829A1 (fr) Rapport de réduction de puissance maximale de gestion de puissance spécifique à un panneau (p-mpr)
WO2013128370A1 (fr) Procédé et appareil pour fournir une ressource de découverte dans un réseau de communication mobile
US10454641B2 (en) Listen before talk for reference signals in MIMO systems
RU2735944C1 (ru) Способ передачи услуги, базовая станция и терминал
WO2016000111A1 (fr) Procédé, dispositif et appareil d'allocation de ressources inter-cellule
US20150117359A1 (en) Communication terminal apparatus, communication control system, and communication control method
US10595301B2 (en) Managing signaling resources using hidden public land mobile network signals

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13717856

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13717856

Country of ref document: EP

Kind code of ref document: A1