WO2007118350A1 - Dispositif relais, système de distribution de contenu sans-fil à bande large et procédé de maintien et de distribution d'un tel contenu - Google Patents

Dispositif relais, système de distribution de contenu sans-fil à bande large et procédé de maintien et de distribution d'un tel contenu Download PDF

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Publication number
WO2007118350A1
WO2007118350A1 PCT/CN2006/000679 CN2006000679W WO2007118350A1 WO 2007118350 A1 WO2007118350 A1 WO 2007118350A1 CN 2006000679 W CN2006000679 W CN 2006000679W WO 2007118350 A1 WO2007118350 A1 WO 2007118350A1
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WO
WIPO (PCT)
Prior art keywords
content
content server
wireless digital
terminal
digital repeater
Prior art date
Application number
PCT/CN2006/000679
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English (en)
Chinese (zh)
Inventor
Xinxi Diao
Original Assignee
Zte Corporation
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 Zte Corporation filed Critical Zte Corporation
Priority to CN2006800536510A priority Critical patent/CN101395941B/zh
Priority to PCT/CN2006/000679 priority patent/WO2007118350A1/fr
Publication of WO2007118350A1 publication Critical patent/WO2007118350A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/14—Backbone network devices

Definitions

  • Relay device broadband wireless content distribution system and content maintenance and transmission method thereof
  • the present invention relates to the field of electronic communications, and in particular, to a relay device, a broadband wireless content distribution system, and a method for maintaining and transmitting the content thereof.
  • the future demand for wireless communication systems will mainly be reflected in the support capabilities of data services, that is, the ability to support information services.
  • the future wireless network will be a communication/consumption/information.
  • Integrated service network This wireless integrated service network will be applied to: education, news, entertainment, transportation, business and so on.
  • Multicast and broadcast services MBMS is based on WCDMA (Wideband Code Division Multiple Access) / GSM (Global System for Mobile Communications) packet networks, by adding some new functional entities, such as the Broadcast Multicast Service Center (BM-SC), Some packet domain functional entities such as SGSN (Serving GPRS (General Packet Radio Service) Support Node), GGSN (Gateway GPRS Support Node), RNC (Radio Network Controller) and UE (User Equipment) add MBMS functions and define The new logical shared channel is used to implement air interface resource sharing. .
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System for Mobile Communications
  • BM-SC Broadcast Multicast Service Center
  • Some packet domain functional entities such as SGSN (Serving GPRS (General Packet Radio Service) Support Node), GGSN (Gateway GPRS Support Node), RNC (Radio Network Controller) and UE (User Equipment) add MBMS functions and define The new logical shared channel is used to implement air interface resource sharing
  • the broadcast multicast service center BM-SC is one of the most characteristic network elements for implementing multimedia services in the third generation mobile communication.
  • the BM-SC is located from the private content service controller in the carrier network, or is located.
  • the content requested by the user is obtained on the server of the core network and sent to the user in an appropriate manner.
  • Patent Application No. US20040110484 entitled “Relay Device, Content Transmission Control Method, and Content Delivery System”
  • the patent document of "Processing, Method of controlling content delivery, and content delivery system” provides a method for pre-positioning a content service controller.
  • the method is in UTRAN (Universal Mobile Telecommunications System Terrestrial Radio Access Network)
  • UTRAN Universal Mobile Telecommunications System Terrestrial Radio Access Network
  • a local content service controller connected to the base station controller is introduced therein to improve the speed at which the BM-SC accesses content to the core network or other networks outside the core network when providing the content service.
  • the fixed wireless digital repeater-based cellular mobile communication system 501 includes: a plurality of wireless digital repeaters 101a 101101n distributed in a manner around the access point device (cell base station) 102,
  • the mobile terminal 103 communicates with the cellular base station 102 in a two-hop manner via a wireless digital repeater 101f through some or some of the wireless digital repeaters.
  • the content service controller 104 controls the content transfer between the base station and the terminal. It is the entry of the content provider for authorizing and initiating the MBMS bearer service in the mobile network and transmitting the MBMS content according to a predetermined schedule. Its features include:
  • MBMS transmission related parameters such as QoS (Quality of Service), multicast broadcast area, initiate and terminate MBMS transmission resources;
  • Receive and transmit MBMS content from an external data source schedule an MBMS session transfer and inform the user, retransmit the session, etc.
  • Service statement including media description, session description such as multicast service identifier, address, and transmission time Wait.
  • the basic structure of the wireless digital repeater given by WINNER D3.4 is shown in Figure 2.
  • the basic structure of the wireless digital repeater includes two channels, up and down, each channel receiving the received signal. Perform remodulation, encoding, and decoding before demodulation, decoding, and retransmission.
  • the signal received by the downlink channel is sent from the donor antenna 201 to the downlink receiving through the basic steps of the duplexer (filter) 202, the linear power amplifier (LNA) 203, the down-conversion 204, and the analog-to-digital conversion (A/D) 205.
  • the power amplifier 209 and the duplexer 211 are sent to the retransmission antenna 210 to transmit to the terminal.
  • the signal received from the mobile terminal by the uplink channel is from the retransmission antenna 210, through the duplexer (filter) 211, and the linear power amplifier (LNA) 212.
  • the basic steps of down conversion 213 and analog-to-digital conversion (A/D) 214 are sent to the uplink receiving and transmitting baseband processing unit 215, and the uplink receiving and transmitting baseband processing unit 215 controls the receiving signal under the control of the management control unit 219.
  • A/D analog-to-digital conversion
  • the basic structure of the wireless digital repeater IST-2003-507581 WINNER D3.4 also gives a variety of variants of wireless digital repeaters, such as: When a time division duplex is required ( When the terminal of TDD is relayed to a frequency division duplex base station, as shown in FIG. 1, the air interface 105 between the wireless digital repeater 101f and the base station 102 is different from the wireless in the working frequency and coding and modulation modes. An air interface 106 between the digital repeater 101f and the terminal 103. The duplexer 211 at this time will be replaced by the radio frequency switch.
  • the disadvantage of introducing a fixed repeater (relay station) in a cellular mobile communication system is that it is merely used as a communication relay, and does not involve a method of exchanging transmission efficiency by implementing content pre-storage at the front end, thereby providing content downloading, local data or
  • the media broadcasting service is not flexible enough and the spectrum usage efficiency is relatively low;
  • Patent application number US20040110484 entitled “Relay device, content transmission control party "Relay apparatus, method of controlling content delivery, and content delivery system” gives a method of prepending a content service controller to an RNC (Radio Network Controller), which The method can improve the acquisition speed of the content by the UTRAN, but cannot save the traffic and spectrum resources of the air interface.
  • RNC Radio Network Controller
  • the present invention provides a relay device, a broadband wireless content distribution system, and a content maintenance and transmission method thereof.
  • a pre-content server in a wireless digital repeater, the pre-content server is loaded with the idle spectrum in the idle period.
  • the content that needs to be broadcast or downloaded realizes the time shift of the spectrum resources, reduces the amount of data transmission between the base station and the wireless digital repeater on the air interface, and makes the valuable spectrum concentrated for real-time and unscheduled information.
  • Transmission which provides a flexible and efficient system structure and implementation path for the integrated service network in which the wireless communication network evolves into communication and content services, and improves the coverage quality and spectrum efficiency of the base station broadcast signal.
  • the present invention provides a relay device, a broadband wireless content distribution system, and a content maintenance and transmission method thereof, and a relay device, configured to perform signal relay forwarding in a wireless communication system, where the device includes :
  • a wireless digital repeater having a management control unit for demodulating, decoding, and remodulating and encoding the received signal under control of the management control unit, the apparatus further comprising : .
  • Pre-content server including:
  • a memory for storing media content data
  • a database maintenance unit configured to perform data access to the memory under control of the management control unit according to an operation command received by the wireless digital repeater; N2006/000679
  • the wireless digital repeater reads content data from the memory through the management control unit according to the received operation command, and broadcasts through the air interface.
  • the present invention further provides a broadband wireless content distribution system, comprising: one or more base stations, one or more terminals, one or more relay devices, the base station has a content service controller, and the relay device includes A wireless repeater having a management control unit for performing signal relaying between the base station and the terminal, wherein:
  • the relay device further includes:
  • a pre-content server comprising: a memory for storing media content data; and a database maintenance unit, configured to, according to an operation command received by the wireless digital repeater, under the control of the management control unit Memory for data access;
  • the content service controller includes:
  • a pre-content server management unit configured to manage and maintain content of the pre-content server by sending an operation command to the wireless digital repeater
  • the wireless digital repeater reads the content data from the memory through the management control unit according to the received operation command, and broadcasts it through the air interface.
  • the pre-content server management unit of the content service controller may perform management and maintenance on the pre-content server, including regular maintenance and immediate maintenance.
  • the pre-content server management unit of the content service controller may load content to the pre-content server based on a plan.
  • the pre-content server management unit of the content service controller may load the content to the pre-content server based on statistics.
  • the plurality of wireless digital repeaters use working frequency points that are spatially staggered from each other, and the respective contents can be transmitted.
  • the wireless digital repeater can transmit content using a spectrum reserved by the base station for content transmission.
  • the wireless digital repeater can use the idle spectrum of the base station to transmit content.
  • the wireless digital repeater can use the spectrum of other cells to transmit content.
  • the present invention also provides a method for the content delivery system to maintain content stored in the relay device, comprising the steps of:
  • the content service controller commands the pre-content server to report the service record and the current available storage capacity information in a specific time interval through the pre-content server management unit;
  • the content service controller sends the service content to the forward content server through the pre-content server management unit according to the information reported by the pre-content server;
  • the content list of the pre-content server created by the pre-content server is updated by the pre-content server according to the transmitted service content, and the pre-content server management unit updates the mirror list corresponding to the content of the pre-content server.
  • the step (A2) may further include: the content service controller clearing the service content in the pre-content server through the pre-content server management unit according to the information reported by the pre-content server;
  • the step (A3) may further include: updating, according to the cleared service content, the content list of the pre-content server created by the pre-content server, and updating the pre-content server with the pre-content server by the pre-content server management unit A mirrored list of content.
  • the present invention also provides a method for content delivery system to provide content to a terminal, comprising the following steps:
  • the terminal reports the service request and the location information, where the location information includes: a signal strength and a repeater identification flag transmitted by the wireless digital relay received by the terminal;
  • the content service controller determines the available repeater according to the location information reported by the terminal;
  • the method can further include: (B5) If there is no content requested by the terminal on the pre-content server, the content service controller sends the content requested by the terminal to the content service controller corresponding to the relay through the air interface, and guides the terminal to download.
  • the present invention also provides a method for a content delivery system to provide coordinated broadcast, comprising the following steps:
  • the wireless digital repeater determines the content to be sent according to the received broadcast content indication information, and reads the broadcast content stored in the pre-content server according to a preset manner by the content service controller.
  • the wireless digital repeater determines the modulation mode, coding mode, RF rate, symbol level synchronization time, and transmission power to be used;
  • the wireless digital repeater broadcasts the read content over the air interface.
  • the wireless digital repeater may determine the modulation mode and the coding mode to be adopted according to the transmission parameter indication information carried in the control signaling sent by the base station.
  • the wireless digital repeater can determine the modulation mode and the coding mode to be used according to the modulation mode and the coding mode information carried by the content itself in the pre-content server.
  • the wireless digital repeater can determine the transmission frequency by locking the transmission frequency on the signal transmitted by the base station.
  • the wireless digital repeater can determine the transmission frequency by locking the transmission frequency on the signal of the global positioning system.
  • the invention introduces a pre-content server in a wireless digital repeater, and loads the content that needs to be broadcasted or downloaded in the future by using the idle spectrum in the idle period, thereby realizing the time shift of the spectrum resource.
  • the broadcast content can be obtained locally, the coverage quality and spectrum efficiency of the base station broadcast signal can be improved, and the data transmission amount between the base station and the wireless digital repeater on the air interface can be reduced, so that the valuable spectrum is made.
  • FIG. 1 is a structural diagram of a conventional fixed wireless digital relay system
  • FIG. 2 is a basic structural diagram of a conventional fixed wireless digital repeater
  • FIG. 3 is a structural diagram of a relay device according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a content transmission system based on a relay device according to an embodiment of the present invention.
  • the relay apparatus of the present invention is composed of two parts: a wireless digital repeater and a pre-content server 301.
  • the basic structure of a wireless digital repeater includes two channels, uplink and downlink, each of which remodulates, encodes, and demodulates the received signal before demodulation, decoding, and retransmission.
  • the uplink and downlink channels of the wireless digital repeater may be in the form of TDD (Time Division Duplex), FDD (Frequency Division Duplex), or may be adopted at the donor end and the retransmission end respectively.
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • the pre-content server 301 is composed of a large-capacity high-speed memory and a database maintenance unit.
  • the large-capacity high-speed memory is used for storing media content data, and the large-capacity high-speed memory is composed of a solid-state memory or a hard disk; the database maintenance unit performs data writing, reading, deleting, and content on the large-capacity high-speed memory according to an operation command received by the donor antenna. catalog.
  • the wireless digital repeater with the pre-content server transmits the pilot signal and the repeater identification (ID) signal according to the frequency point and the time slot parameter sent by the base station, and the pilot signal is used between the terminal and the repeater. Synchronize.
  • the repeater identification signal sent by the terminal repeater after synchronization is established, as well as other signals, such as content service information (including current broadcast content, downloadable content, etc.).
  • the repeater identification signal sent by the wireless digital repeater with the pre-content server can It is a specific coded signal carried by a pilot, or it may be a coded signal transmitted with other information.
  • Wireless Digital Repeater with Pre-Content Server in Pre-Content Server Management Unit can It is a specific coded signal carried by a pilot, or it may be a coded signal transmitted with other information.
  • the 402 preset time, content, and mode, read content data from the pre-content server, and send broadcast information to the area covered by the repeater through the air interface; the broadcast information is independent of the broadcast content of other repeaters. They can be the same or different.
  • FIG. 4 it is a structural diagram of a relay device-based content transmission system according to an embodiment of the present invention, which includes: a plurality of wireless digital repeaters 101'a to 101 including a pre-content server 401. ' n , several cellular mobile communication base stations or access points 102 of other wireless access systems, several terminals 103' with dual synchronization control unit 403, and several content service controls with pre-content server management unit 402 104'.
  • a plurality of wireless digital repeaters 101'a-101'n including the pre-content server 401 are distributed in a certain manner, and the mobile terminal 103' establishes a communication link with the cellular base station 102 in three ways.
  • the dual synchronization control unit 403 within the terminal 103' simultaneously locks the base station synchronization signal and the repeater synchronization signal.
  • the content service controller 104' with the pre-content server management unit 402 maintains the content of the pre-content server 401 over the air interface.
  • the content service controller 104' uses the pre-content server management unit 402 and the UTRAN, other servers within the core network, and the content service controller of the external network to provide content services to the terminal 103'.
  • the pre-content server management unit 402 performs maintenance on the content of the pre-content server 401 into regular maintenance and instant maintenance, for example, uploading new content to the pre-content server 401, cleaning out outdated content, and checking the consistency of the content.
  • the pre-content server management unit 402 establishes content mirroring for the content of each pre-content server within the UTRAN or within the core network.
  • the manifest and content mirror database, the content mirror database stores the union of the contents of each pre-content server.
  • the pre-content server management unit 402 loads the pre-content server in various ways: 1) content-based content loading; 2) statistics-based loading, that is, historical statistical results of the content service class according to the location of the pre-content server, Loading and retaining the content class of the demand; 3) Instant loading, when the pre-content server does not pre-store the content requested by the user, the repeater stores the content in the base station while forwarding the content sent by the base station to the user. Placed in the content server.
  • the pre-content server management unit 402 can load the pre-content server in a specific time, such as during communication idle period, one case is when the night communication service is idle; or can be loaded in real time, such as live broadcast and loading of breaking news data;
  • the wireless digital repeaters 101'a to 101'n have two modes of operation: a communication relay mode and a content transmission mode in a local area.
  • the service content comprises: content download broadcasting.
  • the spectrum resource allocation and dynamic adjustment methods of the wireless digital repeaters 101'a ⁇ 101'n 1) using a spectrum reserved by the base station for downloading, broadcasting, and multicast services, Such as time slots; 2) using the idle spectrum of the base station; 3) using the spectrum of other cells, the wireless environment measurement data coordination is required.
  • the base station (or access point) 102 When operating in a content transmission mode in a local area, the base station (or access point) 102 broadcasts access guidance information for the terminal to access the wireless digital repeater to the area it covers, and the access guidance information includes the use of the repeater. Frequency point, time slot, time relationship with respect to the base station synchronization signal.
  • the relay access guide information broadcasted in the coverage area may include a plurality of frequency points and time slots.
  • the terminal implements fast access with the repeater according to the frequency point, the time slot, and the time relationship of the synchronization signal transmitted by the base station (or the access point).
  • the access point 102 is a base station of the IEEE 802.16e system, and the wireless digital repeaters 101'a-10rn are disposed in the area covered by the IEEE 802.16e base station, and the wireless digital repeaters 101'a-101 'n comes with a pre-content server 401.
  • the terminal 103' is a portable computer.
  • an IEEE 802.16e base station is connected to the content service controller 104' with the pre-content server management unit 402 via the SGSN and GGSN.
  • the wireless digital repeaters 10r a to 101'n are only installed in hot spots, such as stations, intersections, and subway stations.
  • the available spectrum resources are divided into three parts in time: spectrum for base station broadcasting, spectrum B for mobile communication, and spectrum for wireless digital repeaters (. Dynamically adjust based on changes in business volume.
  • the wireless digital repeater When the base station broadcasts with its broadcast spectrum A (corresponding to a time slice A), the wireless digital repeater also uses the spectrum A of the base station broadcast to broadcast in cooperation with the base station;
  • the base station communicates with its communication spectrum B (corresponding to a time slice B)
  • the wireless digital repeater also uses the spectrum B pair for base station communication.
  • the communication signal of the base station is relayed;
  • the spectrum C of the wireless digital repeater (corresponding to a time slice C) is used.
  • the base station does not transmit a signal, and each wireless digital is used.
  • the relay implements spatial multiplexing of the same spectrum in the time slice C, which improves the efficiency of the spectrum.
  • the wireless digital repeater lOl'a lOl'n covered by the access point 102 partially covers the commercial street, some covers the school, and some partially covers the bus stop.
  • the wireless number of the commercial street is covered.
  • the relay provides a broadcast service for commercial advertisements and a download service for commodity information.
  • the wireless digital repeater covering the school provides multimedia teaching broadcast and multimedia download services, and wireless numbers covering the bus stop.
  • Relay provides traffic route download service and bus arrival time Broadcast notice service (at this time, the bus arrival time notices sent by the wireless digital repeaters of different bus stops are different).
  • Another embodiment of the present invention is a content maintenance method of a content service controller of a relay device, wherein the pre-content server management unit 402 performs content uploading, content clearing, and content list update on the pre-content server 301. Specific steps are as follows:
  • Step 1 The pre-content server management unit 402 acquires related data of the pre-content server 301.
  • the pre-content server management unit 402 requests the pre-content server 301 to report the service record in its specific time interval and the current available storage capacity information in order to optimize the upload of the content of the pre-content server 301;
  • Step 2 The pre-content server management unit 402 sends the content to the content server 301;
  • a transmission method is pre-sending, and the content is transmitted to the content server 301 in advance according to the content requirement of the service area of the pre-content server 301.
  • the content requirement of the content service controller service area may be predetermined broadcast information (such as advertisement, streaming media), and may be multimedia content such as frequently downloaded audio and video;
  • One method is to instantly update the content of the pre-content server 301.
  • the pre-content server management unit 402 confirms that the pre-content server 301 currently available to the service requesting terminal does not have the content requested by the terminal, it immediately goes to the relay device.
  • the pre-content server 301 sends (uploads) the content while transmitting its requested content to the terminal through the repeater.
  • Step 3 Synchronize the content list
  • the pre-content server management unit 402 After completing the loading of the pre-content server 301, the pre-content server management unit 402 updates the mirror list corresponding to the content created by the pre-content server 301, and the pre-content server 301 updates the content list created by the pre-content server.
  • the server management unit 402 maintains the two manifest synchronization updates, content peers, and the like.
  • a further embodiment of the present invention is a content downloading method based on a relay device, the specific steps of which are:
  • Step 1 The service request reported by the terminal and the signal strength and the repeater identification flag transmitted by the wireless digital repeater received by the terminal (the network uses the information reported by the terminal to obtain the location information of the wireless digital repeater);
  • Step 2 The content service controller 104' receives the service request reported by the terminal;
  • Step 3 The content service controller 104' determines whether there are available repeaters based on the location information of the terminal.
  • Step 4 The content service controller 104' determines whether there is content requested by the terminal on the pre-content server 401;
  • Step 5 If the pre-content server 401 has the content requested by the terminal, the content service controller 104' guides the download of the terminal;
  • Step 6 If the pre-content server 401 does not have the content requested by the terminal, the content service controller 104' transmits the content requested by the terminal to the content service controller of the repeater through the air interface, and guides the terminal to download;
  • Yet another embodiment of the present invention is a relay-based cooperative broadcast method in which the wireless digital repeaters 101'a-101'n follow the content service controller 104 when the cellular base station 102 broadcasts predetermined content to the area covered by the cellular base station 102.
  • 'Pre-set time, content, and method the content pre-existing in the pre-content server 401 and the content broadcasted by the upper-layer cellular base station 102 is read out through the air interface, and the broadcasts are transmitted as follows.
  • Content
  • the wireless digital repeater 10ra ⁇ 101'n determines the content to be sent, and the specific method is to display the information according to the content carried in the control signaling sent by the base station 102.
  • the wireless digital repeaters 101'a-101'n determine the modulation mode and the coding mode to be used, which can be implemented in two ways: 1) According to the transmission parameters carried in the control signaling sent by the base station 102 The indication information; 2) the modulation mode and the coding mode information carried according to the content itself in the pre-content server 401;
  • the wireless digital repeater 10ra ⁇ 10rn realizes the frequency of transmitting the content and the cellular base.
  • the frequency of the station 102 is strictly synchronized.
  • One method for realizing frequency point synchronization is that the wireless digital repeater 10l'a-lOll'n locks the frequency on the signal transmitted by the cellular base station 102, and a method for realizing frequency synchronization is wireless.
  • the digital repeaters 101'a ⁇ 101'n lock the frequency on the signals of the global positioning system;
  • the wireless digital repeaters 101'a ⁇ 101'n determine the symbol level synchronization time of the transmitted content, and a method for determining the synchronization time is that the wireless digital repeaters 101'a ⁇ 101'n lock the time in the cellular On the signal transmitted by the base station 102, a method for determining the synchronization time is that the wireless digital repeater 10ra ⁇ 101'n locks the time on the signal of the global positioning system;
  • the wireless digital repeater 10ra ⁇ 101'n determines the transmission power of the transmitted content, one method is based on the predetermined power transmission, and the other is based on the power control signal transmitted by the cellular base station 102.
  • the wireless digital repeaters 101'a to 101'n cooperate with the base station 102 to transmit a broadcast signal.
  • Industrial practicability information services and communication services are characterized by: 1) differences in geographical areas, people in different geographical areas care about different types of information; 2) planability in sending time, some
  • class information such as audio and video broadcasting services, is carried out according to the prior schedule; 3) the statistical regularity existing in the content class, and the demand for various types of information in a specific time zone within a specific area is For statistical rules, content classes with high download frequency are used as priority loading content classes.
  • the present invention provides a method for exchanging spectrum usage efficiency with a memory, introducing a pre-content server through a wireless digital repeater, and using the idle spectrum to load the pre-content server for future broadcasts or during idle periods (eg, late at night)
  • the downloaded content realizes the time shift of the spectrum resources.
  • the wireless digital repeater can transmit the content in cooperation with the base station when the base station broadcasts the content, thereby improving the coverage quality and spectral efficiency of the base station broadcast signal.

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

Abstract

L'invention concerne un dispositif relais, un système de distribution de contenu sans-fil à bande large et un procédé de maintien et de distribution d'un tel contenu. Le dispositif relais comporte un serveur de contenu prépositif et le système se compose d'un dispositif relais sans-fil et d'une unité de gestion de serveur de contenu prépositif additionnant le serveur de contenu prépositif à un système de communication mobile existant. Le procédé selon l'invention comporte un procédé selon lequel le serveur de contenu prépositif télécharge en amont et met à jour le contenu dans le serveur de contenu pré-positif dans le noeud de relais; un procédé de réalisation de téléchargement de contenu par un dispositif de relais numérique sans-fil avec le serveur de contenu prépositif; et un procédé de réalisation de diffusion de données et de supports en continu par le dispositif de relais numérique sans-fil avec le serveur de contenu prépositif. Le dispositif, le système et le procédé peuvent réaliser un téléchargement et une diffusion de contenu de façon flexible et efficace, de manière à fournir une solution technique présentant une grande exploitabilité dans le développement de réseaux de communication sans-fil en réseaux de télécommunication, à serveur d'information intégré.
PCT/CN2006/000679 2006-04-14 2006-04-14 Dispositif relais, système de distribution de contenu sans-fil à bande large et procédé de maintien et de distribution d'un tel contenu WO2007118350A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2006800536510A CN101395941B (zh) 2006-04-14 2006-04-14 中继装置、宽带无线内容发放系统及其内容维护与发送方法
PCT/CN2006/000679 WO2007118350A1 (fr) 2006-04-14 2006-04-14 Dispositif relais, système de distribution de contenu sans-fil à bande large et procédé de maintien et de distribution d'un tel contenu

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Application Number Priority Date Filing Date Title
PCT/CN2006/000679 WO2007118350A1 (fr) 2006-04-14 2006-04-14 Dispositif relais, système de distribution de contenu sans-fil à bande large et procédé de maintien et de distribution d'un tel contenu

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WO2007118350A1 true WO2007118350A1 (fr) 2007-10-25

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CN114208060A (zh) * 2019-08-01 2022-03-18 高通股份有限公司 具有缓冲能力的智能定向中继器

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CN103765979B (zh) * 2011-08-19 2018-03-23 Sca艾普拉控股有限公司 电信装置及方法
US10764172B1 (en) 2018-12-31 2020-09-01 Sprint Communications Company L.P. Wireless communication network with wireless relays that serve data content to wireless user devices
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