WO2012159534A1 - Procédé et système de configuration de structure de sous-trame de raccordement de liaison descendante - Google Patents

Procédé et système de configuration de structure de sous-trame de raccordement de liaison descendante Download PDF

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Publication number
WO2012159534A1
WO2012159534A1 PCT/CN2012/075442 CN2012075442W WO2012159534A1 WO 2012159534 A1 WO2012159534 A1 WO 2012159534A1 CN 2012075442 W CN2012075442 W CN 2012075442W WO 2012159534 A1 WO2012159534 A1 WO 2012159534A1
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WIPO (PCT)
Prior art keywords
relay station
symbol
downlink
end point
state
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PCT/CN2012/075442
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English (en)
Chinese (zh)
Inventor
梁枫
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中兴通讯股份有限公司
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Priority claimed from CN201110139205.4A external-priority patent/CN102801461B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012159534A1 publication Critical patent/WO2012159534A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • 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
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • the present invention relates to the field of communications, and in particular to a method and system for configuring a downlink backhaul subframe structure.
  • BACKGROUND OF THE INVENTION As an emerging technology, relay technology has attracted more and more attention and is regarded as a key technology of B3G/4G. As future wireless communications or cellular systems require increased coverage and support for higher rate transmissions, this presents new challenges for wireless communication technologies. At the same time, the cost of system construction and maintenance is more prominent. As the transmission rate and communication distance increase, the energy consumption problem of the battery becomes prominent, and the future wireless communication will adopt a higher frequency, thereby causing a more serious path loss attenuation. Through the relay technology, the traditional single-hop link can be divided into multiple multi-hop links.
  • FIG. 1 is a schematic diagram of a structure of a relay network according to the related art.
  • a link between a user participating in a service of a relay station and a relay station is referred to as an access link (Access Link), and a relay station.
  • the link between the base station and the base station is called a backhaul link.
  • the link between the user participating in the service and the base station is called a direct link.
  • 2 is a schematic diagram of a subframe structure according to the related art. As shown in FIG.
  • LTE Long Term Evolution
  • SC-FDMA Single Carrier-Frequency Division Multiple Access
  • the length of the symbol 0 is 2208T S , and the length of other symbols is 2192T S; if the extended cyclic prefix is used in the subframe, the 1 slot of the Bay U contains 6 symbols, and the length of the CP is Calculated, each symbol has a length of 2560 T S .
  • an OFDM symbol or an SC-FDMA symbol may be simply referred to as a symbol, and in a subframe, a symbol identifier starts from 0.
  • the following discussion is assumed to be a normal CP configuration. For in-band relaying, the backhaul link and the access link operate on the same spectrum.
  • the subframes used for relay station transmission are currently divided into a backhaul subframe and an access subframe, and the backhaul downlink and uplink transmissions of the relay station are performed on the downlink and uplink backhaul subframes, respectively, and the downlink and uplink access subframes are respectively performed. It is specifically used for the downlink and uplink transmission of the access link.
  • the relay station needs to perform downlink transmission of the access link on the first or second OFDM symbols of the subframe, that is, downlink transmission to the user through the downlink access link, and on the remaining available resources.
  • the downlink reception of the backhaul link is performed, that is, the downlink transmission from the base station is received through the downlink backhaul link.
  • the relay station needs a guard interval of a certain length of time for the radio frequency conversion, and the conversion process from the downlink transmission to the downlink reception or the downlink reception to the downlink transmission is difficult.
  • the configuration of the downlink backhaul subframe structure specifically includes two slot structure configurations in the subframe, that is, the start and end configurations of the downlink backhaul transmission in the slot.
  • the guard interval occupies a part of the time slot resources in the downlink backhaul subframe. Therefore, the structure configuration of the downlink backhaul subframe is limited accordingly. The limits are different for different relay station timing states.
  • the relay station has two timing states, a synchronous state and an asynchronous state. If the timing of the downlink transmission of the relay access link is aligned with the timing of the downlink transmission of the base station, the relay station is said to be in a synchronous state, otherwise it is in an asynchronous state.
  • the downlink backhaul subframe configuration includes: In the first slot, the starting point of the downlink backhaul transmission is configured as symbol 1 or 2 or 3, and the destination is configured as symbol 6, in the second slot.
  • the starting point of the downlink backhaul transmission is configured as symbol 0, and the end point is configured as symbol 5; for the relay station in the non-synchronized state, the structure configuration of the downlink backhaul subframe includes: in the first slot, the starting point of the downlink backhaul transmission is configured as symbol 2 or 3. The end point is configured as symbol 6. In the second slot, the starting point of the downlink backhaul transmission is configured as symbol 0, and the end point is configured as symbol 6.
  • the downlink backhaul transmission starting point of the first slot is regarded as the starting point of downlink transmission of the downlink backhaul subframe, and the base station performs configuration to the relay station through high layer signaling;
  • the second slot The configuration of the structure strictly corresponds to the synchronous or asynchronous state in which the relay station is located, that is, the configuration 1 in Table 2 is used for the relay station in the synchronous state, and the configuration in the non-synchronized state is configured in Table 2, and the base station does not pass the high layer signaling. Configure to the relay station.
  • Table 1 The first slot structure configuration in the downlink backhaul subframe
  • FIG. 3 is a schematic diagram of a structure of a downlink backhaul subframe in an asynchronous state according to the related art.
  • a starting point of a downlink backhaul transmission is configured as a symbol 2 Or 3
  • the end point is configured as symbol 6.
  • the starting point of the downlink backhaul transmission is configured as symbol 0
  • the end point is configured as symbol 6.
  • 4 is a schematic diagram of a synchronization state downlink backhaul subframe structure according to the related art.
  • a specific symbol that can be used for downlink backhaul transmission in a downlink backhaul subframe also has a propagation delay between the base station and the relay station. The change is different.
  • the propagation delay between the base station and the relay station exceeds a certain threshold value ⁇ ⁇ 7 ⁇
  • the available symbols of the second slot in the downlink backhaul subframe are symbols 0 to 4, and the symbol 5 will not be available.
  • the end point symbol of the backhaul transmission of the relay station in the synchronization state on the second slot of the downlink backhaul subframe is fixedly configured as symbol 5, but when the distance between the base station and the relay station is long, or when the relay station moves, A relay station in a synchronous state is likely to generate very serious self-interference between the downstream receiving end and the transmitting end, resulting in transmission errors, which have a great influence on system performance and user experience.
  • Embodiments of the present invention provide a downlink backhaul subframe structure configuration method and system, so as to at least solve the related art, in the downlink backhaul subframe of the relay station, the end symbol of the backhaul transmission on the second slot is fixedly configured as symbol 5, so that When the distance between the base station and the relay station is long or when the relay station moves, the relay station will have a very serious self-interference problem between the downlink receiving end and the transmitting end.
  • the embodiment of the invention provides a downlink backhaul subframe structure configuration method.
  • the downlink backhaul subframe structure configuration method includes: according to a downlink propagation delay of the base station to the relay station or a distance between the base station and the relay station, the end point symbol of the backhaul transmission on the second slot of the downlink backhaul subframe of the relay station / or the timing state of the relay station is configured; the relay station configures the downlink backhaul subframe structure according to the end point symbol and/or the timing state.
  • the configuration end point symbol is symbol 5 and/or the configuration timing status is the synchronization status; the configuration end point symbol is symbol 6 and/or the configuration timing status is asynchronous.
  • the downlink propagation delay of the base station to the relay station exceeds or does not fall below a preset second threshold, the end symbol of the backhaul transmission on the second slot of the relay downlink backhaul subframe and/or the timing state of the relay station are configured.
  • the configuration end point symbol is symbol 4 and/or the configuration timing status is the synchronization status; the configuration end point symbol is symbol 6 and/or the configuration timing status is non-synchronized.
  • configuring the end point symbol of the backhaul transmission on the second slot of the relay downlink backhaul subframe and/or the timing state of the relay station includes One of the following: Configure the end point symbol to be symbol 5 and/or configure the timing status to be in sync state; configure the end point symbol to symbol 6 and/or configure the timing status to be unsynchronized.
  • configuring the end point symbol of the backhaul transmission on the second slot of the relay downlink backhaul subframe and/or the timing state of the relay station includes One of the following: Configure the end point symbol to be symbol 4 and/or configure the timing status to be in sync state; configure the end point symbol to symbol 6 and/or configure the timing status to be unsynchronized.
  • the configuration of the end point symbol of the backhaul transmission and/or the timing status of the relay station on the second slot of the downlink backhaul subframe of the relay station includes: the end point symbol and/or the timing state of the backhaul transmission on the second slot of the downlink backhaul subframe of the relay station Configure it.
  • the configuration of the end point symbol of the backhaul transmission and/or the timing status of the relay station on the second slot of the downlink backhaul subframe of the relay station includes: the base station to the end point symbol of the backhaul transmission on the second slot of the relay downlink backhaul subframe and/or the timing of the relay station The status is configured; the base station informs the relay station of the configuration result through high layer signaling and/or X2 interface signaling.
  • the configuration of the end point symbol of the backhaul transmission and/or the timing status of the relay station on the second slot of the downlink backhaul subframe of the relay station includes: 0AM module to the end point symbol of the backhaul transmission on the second slot of the relay downlink backhaul subframe and/or the relay station
  • the timing state is configured; the 0AM module informs the relay station of the configuration result through 0AM signaling.
  • the OAM module notifies the relay station of the configuration result by using the OAM signaling.
  • the OAM module notifies the base station of the configuration result by the OAM signaling; the base station informs the relay station by using the high layer signaling and/or the X2 interface signaling and/or the direct forwarding manner.
  • the method further includes: the relay station notifying the base station of the configuration result by using high layer signaling and/or X2 interface signaling and/or direct forwarding.
  • the higher layer signaling and/or X2 interface signaling and/or OAM signaling comprises a first binary sequence, wherein the first binary sequence is used to indicate that the end point symbol is configured as symbol 4, symbol 5 or symbol 6.
  • the higher layer signaling and/or X2 interface signaling and/or OAM signaling includes a second binary sequence, wherein the second binary sequence is used to indicate that the timing state is configured to be in a synchronized state or an unsynchronized state.
  • the embodiment of the invention provides a downlink backhaul subframe structure configuration system.
  • the downlink backhaul subframe structure configuration system includes a downlink backhaul subframe structure configuration apparatus and a relay station, where the downlink backhaul subframe structure configuration apparatus includes: a first configuration module, configured to perform downlink propagation delay according to the base station to the relay station Or the distance between the base station and the relay station, configuring the end point symbol of the backhaul transmission on the second slot of the relay downlink backhaul subframe and/or the timing state of the relay station; the second configuration module is set to be based on the end point symbol and/or the timing status , configure the downlink backhaul subframe structure.
  • the second configuration module is in the base station or in the 0AM module or in the relay station.
  • FIG. 2 is a schematic diagram of a subframe structure according to the related art
  • FIG. 3 is a schematic diagram of a structure of a downlink backhaul subframe in an asynchronous state according to the related art
  • 4 is a schematic diagram of a synchronization state downlink backhaul subframe structure according to the related art
  • FIG. 5 is a flowchart of a downlink backhaul subframe structure configuration method according to an embodiment of the present invention
  • FIG. 6 is a downlink backhaul according to a preferred embodiment of the present invention.
  • FIG. 7 is an interaction flowchart of a downlink backhaul subframe structure configuration method according to a preferred embodiment 5 of the present invention
  • FIG. 8 is a downlink backhaul subframe structure configuration according to a preferred embodiment 7 of the present invention
  • FIG. 9 is an interaction flowchart of a downlink backhaul subframe structure configuration method according to a preferred embodiment 8 of the present invention
  • FIG. 10 is an interaction flow of a downlink backhaul subframe structure configuration method according to a preferred embodiment 10 of the present invention
  • FIG. 11 is a structural block diagram of a downlink backhaul subframe structure configuration system according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for configuring a downlink backhaul subframe structure according to an embodiment of the present invention. As shown in FIG. 5, the following steps S502 to S504 are included. Step S502: Configure, according to a downlink propagation delay of the base station to the relay station or a distance between the base station and the relay station, an end point symbol of the backhaul transmission on the second slot of the relay downlink backhaul subframe and/or a timing state of the relay station. Step S504, the relay station configures a downlink backhaul subframe structure according to the end point symbol and/or the timing state.
  • the end symbol of the backhaul transmission on the second slot of the downlink backhaul subframe of the relay station is fixedly configured as symbol 5, so that when the base station and the relay station are far apart or when the relay station moves, the relay station is at the downlink receiving end and Very serious self-interference between the transmitters.
  • the end point symbol and/or the synchronization state flexibly, and configuring the downlink backhaul subframe structure, self-interference can be avoided on the downlink receiving end and the transmitting end of the relay station, thereby ensuring system performance and user experience.
  • the present invention configures the end point symbol and/or timing according to the downlink propagation delay of the base station to the relay station or the distance between the base station and the relay station.
  • the state so that the problem of self-interference can be directly solved.
  • the downlink propagation delay of the relay station or the distance between the base station and the relay station configures the end point symbol and/or the timing state.
  • the end point symbol and/or the timing state can be configured by the following two methods: Method 1, the configuration end point symbol is Symbol 5 and/or the configuration timing state is the synchronization state; Method 2, the configuration end point symbol is symbol 6 and/or the configuration timing state is the non-synchronization state.
  • the end point symbol and/or the timing state can be configured by the following two methods: Method 1, the configuration end point symbol is Symbol 4 and/or the configuration timing state is a synchronization state; Method 2, the configuration end point symbol is symbol 6 and/or the configuration timing state is an asynchronous state.
  • the preferred embodiment can also configure T P Tm T P TH2 .
  • the end point symbol and/or the timing status can be configured by the following two methods: Method 1, configure the end point symbol as a symbol 5 and/or configure the timing state to be the synchronization state; Method 2, configure the end point symbol to be symbol 6 and/or configure the timing state to be non-synchronous.
  • the end point symbol and/or the timing status can be configured by the following two methods: Method 1, configure the end point symbol as a symbol 4 and/or configure the timing state to be the synchronization state; Method 2, configure the end point symbol to be symbol 6 and/or configure the timing state to be non-synchronous.
  • Method 1 configure the end point symbol as a symbol 4 and/or configure the timing state to be the synchronization state; Method 2, configure the end point symbol to be symbol 6 and/or configure the timing state to be non-synchronous.
  • the preferred embodiment can also configure D Tm D TH2 .
  • the configuration of the end point symbol and/or the timing state may be performed by the relay station itself, the base station or the OAM module, which are described below.
  • Manner 1 The relay station configures the end point symbol and/or timing state of the backhaul transmission on the second slot of its own downlink backhaul subframe.
  • Manner 2 The base station configures the end point symbol of the backhaul transmission and/or the timing status of the relay station on the second slot of the downlink backhaul subframe of the relay station; the base station informs the relay station of the configuration result by using the high layer signaling and/or the X2 interface signaling.
  • Manner 3 The OAM module configures the end point symbol of the backhaul transmission on the second slot of the downlink backhaul subframe of the relay station and/or the timing status of the relay station; the OAM module notifies the relay station of the configuration result through OAM signaling.
  • the OAM module can also indirectly notify the relay station of the configuration result through OAM signaling, that is,
  • the OAM module informs the base station of the configuration result through OAM signaling; the base station informs the relay station through high layer signaling and/or X2 interface signaling and/or direct forwarding.
  • the configuration result may also be notified to the base station, which may be notified by the following two methods: Method 1, the relay station will be configured through high layer signaling and/or X2 interface signaling and/or direct forwarding.
  • the result informs the base station; Method 2, the 0AM module informs the relay station of the configuration result through 0AM signaling.
  • the higher layer signaling and / or X2 interface signaling and / or 0AM signaling includes a binary sequence for indicating that the end point symbol is configured as symbol 4, symbol 5 or symbol 6. 1.
  • the number of bits in the binary sequence is 1, you can configure the binary sequence to be "1" to indicate that the end point symbol is configured to 5, and the configuration binary sequence to "0" to indicate that the end point symbol is configured as 6, as shown in Table 3.
  • the mapping relationship is only a preferred implementation manner, and any other mapping relationship adopting the inventive concept should be included in the protection scope of the present invention.
  • the higher layer signaling and/or the X2 interface signaling and/or the 0AM signaling comprise a binary sequence for indicating that the timing state is configured to be in a synchronized state or an unsynchronized state.
  • FIG. 6 is an interaction flowchart of a downlink backhaul subframe structure configuration method according to a preferred embodiment of the present invention.
  • the base station configures the end symbol of the second slot in the downlink backhaul subframe of the relay station as symbol 6, and in the field pdsch-End-rl l ENUMERATED (5, 6) in the high-level signaling RN-SubframeConfig information element, pdsch
  • the binary sequence value of -End-rl l is configured as "1" and sent to the relay station, indicating that the end point of the second slot in the downlink backhaul subframe of the relay station is configured as symbol 6.
  • Preferred Embodiment 2 This preferred embodiment 2 describes a procedure in which a base station configures a timing state and transmits it to a relay station.
  • the base station configures the downlink timing state of the relay station to the synchronization state, and the field in the high-level signaling RN-SubframeConfig information element Synchronization - flag-rl 1
  • si synchronization-flag-rl 1 is configured as "0" and sent to the relay station, indicating that the downlink timing state of the relay is configured to be in sync.
  • Preferred Embodiment 3 describes a procedure in which a base station configures a timing state and transmits it to a relay station.
  • the binary sequence value of the synchronization-flag-rl l is configured to be "0" and sent to the relay station, indicating that the downlink timing state of the relay station is configured to be in a synchronized state.
  • Preferred Embodiment 4 describes a procedure in which a base station configures an end point symbol and transmits it to a relay station.
  • ENUMERATED 5 , 6
  • the binary sequence value of pdsch-End-rl l is configured as " 1 " and sent to the relay station, indicating that the end symbol of the second slot in the downlink backhaul subframe of the relay station is configured as symbol 6.
  • Preferred Embodiment 5 This preferred embodiment 5 describes the process in which the OAM module configures the timing status and transmits it to the base station and the relay station.
  • the binary sequence value of synchronization-flag-rll is configured to be "1", sent to the base station and the relay station, indicating that the downlink timing state of the relay station is configured to be in an asynchronous state.
  • Preferred Embodiment 6 This preferred embodiment describes a process in which a base station configures an end point symbol and transmits it to a relay station.
  • the binary sequence value of the field pdsch-End-rll is configured to be "1" and sent to the relay station, indicating that the end symbol of the second slot in the downlink backhaul subframe of the relay station is configured as symbol 6.
  • Preferred Embodiment 7 This preferred embodiment 7 describes the process in which the OAM module configures the end point symbol and transmits it to the relay station, which is then forwarded by the relay station to the base station.
  • the OAM module configures the end symbol of the second slot in the downlink backhaul subframe of the relay station as symbol 4, and in the OAM signaling, configures the binary sequence value of the field pdsch-End-rll as "00", and sends it to the relay station. And then forwarded to the base station by the relay station, indicating that the end point symbol of the second slot in the downlink backhaul subframe of the relay station is configured as symbol 4.
  • Preferred Embodiment 8 This preferred embodiment VIII describes a process in which an OAM module configures a timing state and transmits it to a relay station, which is then forwarded by the relay station to the base station.
  • the OAM module configures the downlink timing state of the relay station to be in a synchronized state, and in the OAM signaling, the binary sequence value of the field synchronization-flag-rll is configured to be "0", sent to the base station, and then forwarded by the base station to the relay station, indicating The downlink timing state of the relay station is configured to be in a synchronized state.
  • the base station configures the end symbol of the second slot in the downlink backhaul subframe of the relay station as symbol 4, and in the field pdsch-End-rll ENUMERATED (4, 5) in the high-level signaling RN-SubframeConfig information element, the field pdsch
  • the binary sequence value of -End-rll is configured as "0" and sent to the relay station, indicating that the end symbol of the second slot in the downlink backhaul subframe of the relay station is configured as symbol 4.
  • the preferred embodiment IX describes the process in which the OAM module configures the timing status and sends it to the relay station, which is then forwarded by the relay station to the base station.
  • the binary sequence value of the field synchronization-flag-rll is configured to be "0", sent to the base station, and then forwarded by the base station to the relay station, indicating that the downlink timing state of the relay station is configured to be in a synchronized state.
  • Preferred Embodiment 10 describes a process in which a relay station itself configures an end point symbol and then transmits it to a base station.
  • the binary sequence value of the field pdsch-End-rll is configured to be "1" and sent to the base station, indicating that the end symbol of the second slot in the downlink backhaul subframe of the relay station is configured as symbol 6.
  • a preferred embodiment 11 describes a process in which a relay station itself configures a timing state and then transmits it to a base station.
  • the relay station itself configures the downlink timing state of the relay station to the synchronization state.
  • the field synchronization-flag-rll The binary sequence value is configured to be "0" and sent to the base station, indicating that the downlink timing state of the relay station is configured to be in a synchronized state.
  • Preferred Embodiment 12 describes a procedure in which a base station configures an end point symbol and transmits it to a relay station.
  • the binary sequence value of pdsch-End-rl l is configured as "1", and sent to the relay station to indicate the relay station.
  • the end symbol of the second slot in the downlink backhaul subframe is configured as symbol 5.
  • the base station configures the binary sequence value of the synchronization-flag-rl l to “0” and sends it to the relay station. Indicates that the downlink timing state of the relay station is configured to be in a synchronized state.
  • FIG. 11 is a structural block diagram of a downlink backhaul subframe configuration configuration system, as shown in FIG.
  • the first configuration module 1122 is configured to set an end point symbol and/or a relay station 114 for the backhaul transmission on the second slot of the downlink backhaul subframe of the relay station 114 according to the downlink propagation delay of the base station to the relay station 114 or the distance between the base station and the relay station 114.
  • the second configuration module 1124 is connected to the first configuration module 1122, and configured to configure the downlink backhaul subframe structure according to the end point symbol and/or the timing status configured by the first configuration module 1122.
  • the second configuration module 1124 is in the base station or in the 0AM module or in the relay station 114.
  • the downlink backhaul subframe structure configuration system described in the device embodiment corresponds to the foregoing method embodiment, and the specific implementation process has been described in detail in the method embodiment, and details are not described herein again.
  • a downlink backhaul subframe structure configuration method and system are provided. By flexibly configuring the end point symbol and/or the synchronization state, and configuring the downlink backhaul subframe structure, the present invention can avoid self-interference of the downlink receiving end and the transmitting end of the relay station, thereby ensuring system performance and user experience.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

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Abstract

L'invention porte sur un procédé et un système de configuration d'une structure d'une sous-trame de raccordement de liaison descendante. Le procédé consiste à : configurer, en fonction d'un temps de propagation en liaison descendante entre une station de base et une station relais ou d'une distance entre la station de base et la station relais, un symbole de point final de transmission de raccordement sur un second créneau d'une sous-trame de raccordement de liaison descendante de la station relais et/ou un état de synchronisation de la station relais ; et configurer par la station relais une structure de la sous-trame de raccordement de liaison descendante conformément au symbole de point final et/ou à l'état de synchronisation. La présente invention prévient un auto-brouillage d'une extrémité de réception et d'une extrémité d'émission de liaison descendante de la station relais, de manière à garantir les performances du système et l'expérience utilisateur.
PCT/CN2012/075442 2011-05-26 2012-05-14 Procédé et système de configuration de structure de sous-trame de raccordement de liaison descendante WO2012159534A1 (fr)

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CN201110139205.4A CN102801461B (zh) 2011-05-26 下行回程子帧结构配置方法及系统

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