WO2011012065A1 - 一种中继与基站建立连接的方法、设备和系统 - Google Patents

一种中继与基站建立连接的方法、设备和系统 Download PDF

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Publication number
WO2011012065A1
WO2011012065A1 PCT/CN2010/075469 CN2010075469W WO2011012065A1 WO 2011012065 A1 WO2011012065 A1 WO 2011012065A1 CN 2010075469 W CN2010075469 W CN 2010075469W WO 2011012065 A1 WO2011012065 A1 WO 2011012065A1
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WO
WIPO (PCT)
Prior art keywords
base station
serving base
information
relay
interface information
Prior art date
Application number
PCT/CN2010/075469
Other languages
English (en)
French (fr)
Inventor
肖登坤
王文杰
黄剑
曲同巍
熊新
覃忠宾
肖为民
李安俭
贺媛
韩静
于映辉
马慧
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP10803898A priority Critical patent/EP2448359A4/en
Priority to RU2012107390/08A priority patent/RU2518673C2/ru
Publication of WO2011012065A1 publication Critical patent/WO2011012065A1/zh
Priority to US13/358,196 priority patent/US20120170505A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/155Ground-based stations
    • H04B7/15528Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15542Selecting at relay station its transmit and receive resources
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/045Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • Embodiments of the present invention relate to communication technologies, and in particular, to a method, device, and system for establishing a connection between a relay and a base station. Background of the invention
  • the wireless relay communicates with the base station over the air interface, which is referred to as the serving base station.
  • a base station that is also in the vicinity of a wireless relay but that does not establish a connection with a wireless relay is referred to as a non-serving base station, as shown in FIG.
  • the relay and the serving base station are connected through the Rn interface, and the serving base station and the non-serving base station are connected through the X2 interface.
  • the relay needs to exchange data with the non-serving base station, the relay needs to send the data to the serving base station, and then the serving base station forwards it to the non-serving base station. In the actual situation, the relay exchanges data with the non-serving base station often occurs.
  • the load indication information needs to be sent to the non-serving base station to find the interference user.
  • the UE switches from cell 1 to cell 2 in FIG. 1, it also needs to exchange information with the non-serving base station; and in CoMP (multipoint coordinated transmission) coordination, it also needs to exchange information with the non-serving base station.
  • CoMP multipoint coordinated transmission
  • Embodiments of the present invention provide a method, device, and system for establishing a connection between a relay and a base station. Used for trunking and non-serving base stations to establish a connection.
  • An embodiment of the present invention provides a method for establishing a connection between a relay and a base station, including: receiving interface information sent by a serving base station;
  • An embodiment of the present invention provides a relay, including:
  • a first receiving module configured to receive interface information sent by the serving base station
  • a first acquiring module configured to acquire resource information in the interface information received by the first receiving module, where the resource information is used to indicate a radio resource used by the relay and the non-serving base station to communicate;
  • a first establishing module configured to establish a wireless connection with the non-serving base station on the wireless resource indicated by the resource information acquired by the first acquiring module.
  • An embodiment of the present invention provides a base station, including:
  • a second sending module configured to send the interface information to the relay, where the interface information includes resource information used to indicate the radio resource used by the relay and the non-serving base station to communicate;
  • a third sending module configured to send the interface information to the non-serving base station, where the interface information includes resource information used to indicate the radio resource used by the non-serving base station and the relay to communicate.
  • the embodiment of the invention provides a communication system, including:
  • a relay configured to receive interface information sent by the serving base station, and obtain resource information in the interface information, where the resource information is used to indicate a radio resource used by the relay and the non-serving base station to communicate; Establishing a wireless connection with the non-serving base station on the indicated resource; a base station, configured to send the interface information to the relay, where the interface information includes resource information used to indicate the radio resource used by the relay and the non-serving base station to communicate; and send the interface information to the non-serving base station
  • the interface information includes resource information used to indicate the radio resource used by the non-serving base station and the relay to communicate.
  • a method, device, and system for establishing a connection between a relay and a base station By receiving the interface information sent by the serving base station, selecting a frequency band or continuing to receive an uplink polling interval, a connection is finally established on the above resources.
  • the technical problem of establishing a wireless connection with an adjacent non-serving base station is solved, which lays a foundation for reducing the communication delay with the adjacent non-serving base station.
  • FIG. 1 is a schematic diagram of a wireless connection between a relay and a base station in the prior art
  • FIG. 2 is a schematic diagram of an embodiment of establishing a connection according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of an embodiment of establishing a connection by using a frequency division method according to an embodiment of the present invention
  • FIG. 4 is a flowchart of establishing a connection information by using a frequency division method according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a relay according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an embodiment of establishing a connection by using a time division method according to the present invention.
  • FIG. 9 is a flowchart of establishing a connection information by using a time division method according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a relay according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a communication system according to an embodiment of the present invention. Mode for carrying out the invention
  • FIG. 2 is a schematic diagram of an embodiment of establishing a connection according to an embodiment of the present invention.
  • the embodiment includes: Step 201: Receive interface information sent by a serving base station;
  • Step 202 Obtain resource information in the interface information, where the resource information is used to indicate a radio resource used by the relay and non-serving base stations to communicate;
  • Step 203 Establish a wireless connection with the non-serving base station on the resource indicated by the resource information.
  • This embodiment is applicable to a process in which a relay and an adjacent non-serving base station use a frequency division method to establish a connection.
  • the relay first receives the interface information sent by the serving base station; then obtains the resource information from it for communication with the non-serving base station; and finally establishes a connection with the non-serving base station on the selected resource.
  • Each step is described in detail below.
  • the serving base station sends the interface information to the relay, and the information may include time domain resources, or frequency domain resources, or time domain and frequency domain resources.
  • the serving base station may send the time slot information to the relay; when the resource is a frequency domain resource, the serving base station may send the frequency band to the relay; When it is a time domain and a frequency domain resource, the serving base station can simultaneously send the time domain and the frequency domain resource to the relay.
  • the method of obtaining may include: direct parsing, which is generally applied when only one pair of uplink and downlink resources are received; or an uplink and downlink resource is selected from an optional resource set, which generally occurs when multiple pairs are received.
  • the serving base station may send signaling to the relay to initiate the random access procedure; if there is no feedback, the non-serving base station may learn the UE's selection result by monitoring; finally, the relay establishes a wireless connection with the non-serving base station in the above frequency band.
  • a schematic diagram of this process is shown in Figure 4.
  • the relay can send information to the non-serving base station through this connection.
  • the relay can directly send the load indication information to the non-serving base station through this interface, and the interference user is checked, thereby reducing the delay by 50%, thereby improving the throughput.
  • the information can also be exchanged with the non-serving base station through this interface, thereby reducing the delay by 50% compared with the prior art.
  • FIG. 3 is a schematic diagram of an embodiment of establishing a connection by using a frequency division method according to the present invention.
  • the embodiment includes: Step 301: Receive interface information sent by a serving base station;
  • Step 302 Select a frequency band from the interface information, and perform communication with the non-serving base station.
  • Step 303 Establish a wireless connection with the non-serving base station in the foregoing frequency band.
  • This embodiment is applicable to a process in which a relay and an adjacent non-serving base station establish a connection by using a frequency division method.
  • the relay first receives the interface information sent by the serving base station; then selects the uplink and downlink frequency bands for communication with the non-serving base station; and finally establishes a connection with the non-serving base station in the selected frequency band. Each step is described in detail below.
  • the serving base station In establishing a wireless connection between the relay and the non-serving base station, the serving base station sends the interface information to the relay.
  • the information may include the serving base station and the service not included.
  • the information may include no The service set base station and the frequency band set information A3 used by the base station around the serving base station and supported by the non-serving base station.
  • the A3 set needs to be divided into two sub-sets
  • A3a is Downlink information that is not supported by the serving base station and the base station around the serving base station and supported by the non-serving base station
  • A3b is uplink set information that is not used by the serving base station and the base station around the serving base station and supported by the non-serving base station; After receiving this information, select the frequency band suitable for your own use.
  • the method of selection is as follows: Let the frequency band of the relay support data transmission be set B (the same relay may also support different frequency bands when going up and down, then it will still B is divided into two sets, and the specific method is similar to the sub-A3, and will not be described again.
  • the UE When receiving the set A1 or A3, the UE selects the frequency band of the intersection of A1 or A3 and B, and when receiving the set A2, selects A2.
  • the frequency band of the intersection of the complement and B; after the selection, the relay may feed back to the serving base station, or may not feed back: If feedback, the serving base station sends the relay selected carrier information to the surrounding non-serving base station, the non-serving base station After receiving the information, the confirmation information is fed back; the serving base station may send signaling to initiate the random access procedure to the relay; if there is no feedback, the non-serving base station may learn the selection result of the UE by monitoring; and finally relay in the above frequency band Establish a wireless connection with the non-serving base station.
  • a schematic diagram of this process is shown in Figure 4.
  • the relay can send information to the non-serving base station through this connection.
  • the relay can directly send the load indication information to the non-serving base station through this interface, and the interference user is checked, thereby reducing the delay by 50%, thereby improving the throughput.
  • the UE can also exchange information with the non-serving base station through this interface, thereby reducing the delay by 50% compared with the prior art.
  • FIG. 5 is a schematic structural diagram of a relay according to an embodiment of the present invention. This embodiment includes:
  • the first receiving module 501 is configured to receive interface information sent by the serving base station.
  • a first selection module 502 configured to select a frequency band from the interface information, for communicating with a non-serving base station;
  • the first establishing module 503 is configured to establish a wireless connection with the non-serving base station in the foregoing frequency band, and may further include:
  • the first feedback module 504 is configured to send, to the serving base station, a frequency band letter selected by the first selection module. Interest; or
  • the second receiving module 505 is configured to receive signaling sent by the serving base station to initiate a random access procedure with the non-serving base station;
  • the first sending module 506 is configured to send connection establishment completion information to the serving base station.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention. This embodiment includes:
  • a second sending module 601, configured to send interface information
  • the third sending module 602 is configured to send, to the non-serving base station, the frequency band information selected by the relay.
  • This embodiment is used in the embodiment shown in FIG. 3, and its features are not described again.
  • FIG. 7 is a schematic diagram of a communication system according to an embodiment of the present invention. This embodiment includes:
  • the relay 701 is configured to receive interface information sent by the serving base station, select a frequency band from the interface information, and perform communication with the non-serving base station, and establish a wireless connection with the non-serving base station in the frequency band;
  • the base station 702 is configured to send interface information, and send the selected frequency band information to the non-serving base station.
  • FIG. 8 is a schematic diagram of an embodiment of establishing a connection by using a time division method according to the present invention.
  • the embodiment includes: Step 801: Receive interface information sent by a serving base station;
  • Step 802 Receive a downlink polling interval sent by the serving base station for communicating with the non-serving base station.
  • Step 803 Establish a wireless connection with the non-serving base station according to the interface information and the downlink polling interval.
  • This embodiment is applicable to a process in which a relay and an adjacent non-serving base station establish a connection by using a time division method. Medium.
  • the relay first receives the interface information sent by the serving base station; then receives the downlink polling interval sent by the serving base station for communicating with the non-serving base station; and finally establishes a connection with the non-serving base station during the selected time period. Each step is described in detail below.
  • the serving base station In establishing a wireless connection between the relay and the non-serving base station, the serving base station transmits interface information to the relay, the information including an uplink polling interval for communicating with the non-serving base station.
  • the relay After receiving the T2, the relay can feed back the confirmation information to the serving base station; then the serving base station sends the T2 to the non-serving base station, and after receiving the information, the non-serving base station feeds back the confirmation information, and attaches its own information in the confirmation information.
  • the relay transmits information to the non-serving base station every interval T2, and the non-serving base station transmits information to the relay every interval T2*.
  • the above information flow is shown in Figure 9.
  • the relay can send information to the non-serving base station through this connection.
  • the relay can directly send the load indication information to the non-serving base station through this interface, and the interference user is checked, which reduces the delay by 50%, thereby improving the throughput.
  • the UE can also exchange information with the non-serving base station through this interface, thereby reducing the delay by 50% compared with the prior art.
  • FIG. 10 is a schematic structural diagram of a relay according to an embodiment of the present invention. This embodiment includes:
  • the third receiving module 1001 is configured to receive interface information sent by the serving base station;
  • the fourth receiving module 1002 is configured to receive a downlink polling interval sent by the serving base station for communicating with the non-serving base station;
  • a second establishing module 1003, configured to establish a wireless connection with the non-serving base station according to the foregoing interface information and the downlink polling interval; It can also include:
  • the second feedback module 1004 is used for feedback confirmation information.
  • FIG. 11 is a schematic structural diagram of a base station according to an embodiment of the present invention. This embodiment includes:
  • the fourth sending module 1101 is configured to send interface information.
  • the fifth sending module 1102 is configured to send, to the non-serving base station, an uplink polling interval for communicating with the non-serving base station;
  • the fifth receiving module 1103 is configured to receive a downlink polling interval sent by the non-serving base station for communicating with the non-serving base station.
  • FIG. 12 is a schematic diagram of a communication system according to an embodiment of the present invention. This embodiment includes:
  • the relay 1201 is configured to receive interface information sent by the serving base station, receive a downlink polling interval sent by the serving base station for communicating with the non-serving base station, and establish a wireless connection according to the interface information and the downlink polling interval and the non-serving base station;
  • the base station 1202 is configured to send interface information, send an uplink polling interval for communicating with the non-serving base station to the non-serving base station, and receive a downlink polling interval sent by the non-serving base station for communicating with the non-serving base station.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the embodiment, or may be correspondingly changed in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

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Description

一种中继与基站建立连接的方法、 设备和系统 本申请要求于 2009 年 7 月 29 日提交中国专利局、 申请号为 200910109250.8、 发明名称为 "一种中继与基站建立连接的方法、设备和系 统" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明实施例涉及通信技术, 特别是涉及一种中继与基站建立连接的 方法、 设备和系统。 发明背景
随着高速网络技术和多媒体技术的飞速发展, 无线网络的发展异常迅 猛, 由于无线电波存在衰减, 高工作频率将导致基站的覆盖范围十分有限, 针对这一点, 现有技术在网络中加入了无线中继, 以增加系统覆盖的范围。
无线中继通过空中接口与基站进行通信, 这一基站被称作服务基站。 也在无线中继附近的 , 但是未与无线中继建立连接的基站称作非服务基站 , 见图 1。 中继和服务基站通过 Rn接口进行连接, 服务基站和非服务基站中 间通过 X2接口进行连接。 当中继需要和非服务基站交换数据时, 中继需要 将数据发送至服务基站, 再由服务基站转发至非服务基站。 并且在实际情 况中, 这种中继与非服务基站交换数据的情况经常发生, 比如当中继受到 相邻非服务基站的千扰时, 需要向非服务基站发送负荷指示信息用来查找 千扰用户; 再比如当 UE从图 1中的小区 1切换至小区 2时,也需要和非服 务基站交换信息; 还有在 CoMP (多点协作传输)协调时, 也需要和非服务 基站交换信息。
在实现本发明过程中, 发明人发现如下问题: 现有技术中中继需要通 过 Rn、 X2两个接口才能和非服务基站进行通信, 产生了两倍的时延。 发明内容
本发明实施例提供了一种中继与基站建立连接的方法、 设备及系统。 用于中继和非服务基站建立连接。
本发明实施例提供了一种中继与基站建立连接的方法, 包括: 接收服务基站发送的接口信息;
获取所述接口信息中的资源信息, 所述资源信息用于指示所述中继和 所述非服务基站进行通信时使用的无线资源;
在所述资源信息所指示的无线资源上和所述非服务基站建立无线连 接。
本发明实施例提供了一种中继, 包括:
第一接收模块, 用于接收服务基站发送的接口信息;
第一获取模块 , 用于获取所述第一接收模块接收的接口信息中的资源 信息, 所述资源信息用于指示所述中继和所述非服务基站进行通信时使用 的无线资源;
第一建立模块, 用于在所述第一获取模块获取的资源信息所指示的无 线资源上和所述非服务基站建立无线连接。
本发明实施例提供了一种基站, 包括:
第二发送模块, 用于向中继发送接口信息, 所述接口信息中包括用于 指示所述中继和非服务基站进行通信时使用的无线资源的资源信息;
第三发送模块, 用于向非服务基站发送所述接口信息, 所述接口信息 中包括用于指示所述非服务基站和所述中继进行通信时使用的无线资源的 资源信息。
本发明实施例提供了一种通信系统, 包括:
中继, 用于接收服务基站发送的接口信息; 获取所述接口信息中的资 源信息, 所述资源信息用于指示所述中继和非服务基站进行通信时使用的 无线资源; 在资源信息所指示的资源上和非服务基站建立无线连接; 基站, 用于向中继发送接口信息, 所述接口信息中包括用于指示所述 中继和所述非服务基站进行通信时使用的无线资源的资源信息; 向非服务 基站发送所述接口信息, 所述接口信息中包括用于指示所述非服务基站和 所述中继进行通信时使用的无线资源的资源信息。
本发明实施例提供的一种中继与基站建立连接的方法、 设备及系统。 通过接收服务基站发送的接口信息, 选择频段或继续接收上行轮询间隔, 最终在上述资源上建立连接。 解决了与相邻的非服务基站建立无线连接的 技术问题, 为降低与相邻的非服务基站的通信时延奠定了基础。 附图简要说明
图 1 为现有技术中继和基站的无线连接示意图;
图 2为本发明实施例建立连接的实施例示意图;
图 3为本发明实施例采用频分法建立连接的实施例示意图;
图 4为本发明实施例釆用频分法建立连接信息流程图;
图 5为本发明实施例中继的结构示意图;
图 6为本发明实施例基站的结构示意图;
图 7为本发明实施例通信系统示意图;
图 8为本发明采用时分法建立连接的实施例示意图;
图 9为本发明实施例采用时分法建立连接信息流程图;
图 10为本发明实施例中继的结构示意图;
图 11为本发明实施例基站的结构示意图;
图 12为本发明实施例通信系统示意图。 实施本发明的方式
发明人在实现本发明实施例的过程中, 发现中继经常需要和相邻的非 服务基站传递数据。 但是现有技术中, 中继与非服务基站之间没有任何接 口 (包括无线接口和有线接口), 所以这种转发需要通过服务基站完成, 这 样就增加了时延。 而且增加的时延还会影响系统的其它性能, 比如当排查 找干扰用户时, 时延会造成吞吐量的下降。 图 2为本发明实施例建立连接的实施例示意图。 本实施例包括: 步骤 201 , 接收服务基站发送的接口信息;
步驟 202, 获取所述接口信息中的资源信息, 所述资源信息用于指示所 述中继和非服务基站进行通信时使用的无线资源;
步驟 203 , 在所述资源信息所指示的资源上和非服务基站建立无线连 接。
本实施例适用于中继和相邻的非服务基站釆用频分法建立连接的过程 中。 中继首先接收服务基站发送的接口信息; 然后从中获取资源信息, 用 于和非服务基站进行通信; 最后在选出的资源上和非服务基站建立连接。 下面对每一个步驟作详细的说明。
在建立中继与非服务基站之间的无线连接过程中 , 服务基站向中继发 送接口信息, 这个信息可以包括时域资源, 或频域资源, 或时域与频域资 源。 具体来说, 当这一资源为时域资源时, 服务基站可以将时隙信息发送 给中继; 当这一资源为频域资源时, 服务基站可以将频段发送给中继; 当 这一资源为时域与频域资源时 , 服务基站可以同时将时域和频域资源发送 给中继。 获取的方式可以包括: 直接解析, 这种方式一般应用在只接收了 一对上下行资源的情况下; 或者从可选的资源集合中选择上下行资源, 这 种情况一般发生在接收了多对上下行资源的情况下。 服务基站可以向中继 发送发起随机接入过程的信令; 如果没有反馈, 非服务基站可以通过监听 得知 UE的选择结果; 最后中继在上述频段上和非服务基站建立无线连接。 这一过程的示意图如图 4所示。
在建立连接之后, 中继可以通过这一连接向非服务基站发送信息。 比 如当中继受到相邻的非服务基站的干扰时, 中继可以通过这一接口直接发 送负荷指示信息给非服务基站, 排查千扰用户, 降低了 50 %时延, 从而提 高了吞吐量。 再比如, 当 UE在从服务基站向非服务基站进行切换时以及 CoMP协作时,也可以通过这一接口与非服务基站交换信息,从而比现有技 术减少了 50 %的时延。
本发明实施例通过解决了中继与相邻的非服务基站建立无线连接的技 术问题 , 为降低与相邻的非服务基站的通信时延奠定了基础。 图 3为本发明采用频分法建立连接的实施例示意图。 本实施例包括: 步骤 301 , 接收服务基站发送的接口信息;
步驟 302, 从上述接口信息中选择频段, 用于和非服务基站进行通信; 步驟 303, 在上述频段上和非服务基站建立无线连接。
本实施例适用于中继和相邻的非服务基站采用频分法建立连接的过程 中。 中继首先接收服务基站发送的接口信息; 然后从中选出上行和下行频 段, 用于和非服务基站进行通信; 最后在选出的频段上和非服务基站建立 连接。 下面对每一个步驟作详细的说明。
在建立中继与非服务基站之间的无线连接过程中 , 服务基站向中继发 送接口信息, 当非服务基站支持在所有频段上收发数据时, 这个信息中可 以包含未被上述服务基站以及服务基站周围的基站使用的频段集合信息 A1 或已被上述服务基站以及服务基站周围的基站使用的频段集合信息 A2, 当 非服务基站只支持在部分频段上收发数据时, 这个信息中可以包含未被上 述服务基站以及服务基站周围的基站使用的并且非服务基站支持的频段集 合信息 A3, 具体来说, 当非服务基站上下行支持不同的频段时, A3 集合 还需要分为两个子集合, A3a 为未被上述服务基站以及服务基站周围的基 站使用的并且非服务基站支持的下行集合信息, A3b 为未被上述服务基站 以及服务基站周围的基站使用的并且非服务基站支持的上行集合信息; 中 继收到这些信息后, 从中选择适合自己使用的频段, 选择的方法为: 设中 继支持数据传输的频段为集合 B (同样的中继也有可能在上下行时支持不 同的频段,那么还是将 B分为两个集合,具体方法和分 A3相似,不再赘述), 当收到集合 A1或 A3时, UE选择 A1或 A3与 B的交集中的频段, 当收到 集合 A2时, 选择 A2的补集与 B的交集中的频段; 选择之后中继可以反馈 给服务基站, 也可以不反馈: 如果反馈了, 服务基站向周围的非服务基站 发送中继选出的载波信息, 非服务基站收到这条信息后, 反馈确认信息; 服务基站可以向中继发送发起随机接入过程的信令; 如果没有反馈, 非服 务基站可以通过监听得知 UE的选择结果;最后中继在上述频段上和非服务 基站建立无线连接。 这一过程的示意图如图 4所示。
在建立连接之后, 中继可以通过这一连接向非服务基站发送信息。 比 如当中继受到相邻的非服务基站的干扰时 , 中继可以通过这一接口直接发 送负荷指示信息给非服务基站, 排查千扰用户, 降低了 50 %时延, 从而提 高了吞吐量。 再比如, 当 UE在从服务基站向非服务基站进行切换时以及 CoMP协作时,也可以通过这一接口与非服务基站交换信息,从而比现有技 术减少了 50 %的时延。
本发明实施例通过解决了中继与相邻的非服务基站建立无线连接的技 术问题, 为降低与相邻的非服务基站的通信时延奠定了基础。 图 5为本发明实施例中继的结构示意图。 本实施例包括:
第一接收模块 501 , 用于接收服务基站发送的接口信息;
第一选择模块 502, 用于从上述接口信息中选择频段, 用于和非服务基 站进行通信;
第一建立模块 503 , 用于在上述频段上和非服务基站建立无线连接; 还可以包括:
第一反馈模块 504:用于向服务基站发送第一选择模块所选择的频段信 息; 或
第二接收模块 505,用于接收服务基站发送的要求与非服务基站发起随 机接入过程的信令; 或
第一发送模块 506, 用于向服务基站发送连接建立完成信息。
本实施例用于图 3所示的实施例中, 其特点不再赘述。 图 6为本发明实施例基站的结构示意图。 本实施例包括:
第二发送模块 601 , 用于发送接口信息;
第三发送模块 602, 用于向非服务基站发送中继所选择的频段信息。 本实施例用于图 3所示的实施例中, 其特点不再赘述。 图 7为本发明实施例通信系统示意图。 本实施例包括:
中继 701 , 用于接收服务基站发送的接口信息, 从上述接口信息中选择 频段, 用于和非服务基站进行通信, 在上述频段上和非服务基站建立无线 连接;
基站 702, 用于发送接口信息, 向非服务基站发送中继所选择的频段信 息。
本实施例用于图 3所示的实施例中, 其特点不再赘述。 图 8为本发明采用时分法建立连接的实施例示意图。 本实施例包括: 步驟 801 , 接收服务基站发送的接口信息;
步驟 802,接收服务基站发送的用于和非服务基站进行通信的下行轮询 间隔;
步驟 803 ,根据上述接口信息以及下行轮询间隔和非服务基站建立无线 连接。
本实施例适用于中继和相邻的非服务基站采用时分法建立连接的过程 中。 中继首先接收服务基站发送的接口信息; 然后再接收服务基站发送的 用于和非服务基站进行通信的下行轮询间隔; 最后在选出的时间段上和非 服务基站建立连接。 下面对每一个步驟作详细的说明。
在建立中继与非服务基站之间的无线连接过程中 , 服务基站向中继发 送接口信息, 这个信息中包含用于和非服务基站进行通信的上行轮询间隔
T2; 中继收到 T2后, 可以给服务基站反馈确认信息; 然后服务基站再发送 T2给非服务基站, 非服务基站收到这条信息后, 反馈确认信息, 并在确认 信息中附带自己的用于和中继进行通信的下行轮询间隔 T2*;服务基站向中 继发送 T2*; 中继收到 T2*后, 可以给服务基站反馈确认信息; 根据 T2和 T2*建立无线连接, 即中继每间隔 T2向非服务基站发送信息, 非服务基站 每间隔 T2*向中继发送信息。 上述信息流程见图 9。
在建立连接之后, 中继可以通过这一连接向非服务基站发送信息。 比 如当中继受到相邻的非服务基站的千扰时, 中继可以通过这一接口直接发 送负荷指示信息给非服务基站, 排查千扰用户, 降低了 50 %时延, 从而提 高了吞吐量。 再比如, 当 UE在从服务基站向非服务基站进行切换时以及 CoMP协作时,也可以通过这一接口与非服务基站交换信息,从而比现有技 术减少了 50 %的时延。
本发明实施例通过另一种方式解决了中继与相邻的非服务基站建立无 线连接的技术问题, 为降低与相邻的非服务基站的通信时延奠定了基础。 图 10为本发明实施例中继的结构示意图。 本实施例包括:
第三接收模块 1001 , 用于接收服务基站发送的接口信息;
第四接收模块 1002, 用于接收服务基站发送的用于和非服务基站进行 通信的下行轮询间隔;
第二建立模块 1003 , 用于根据上述接口信息以及下行轮询间隔和非服 务基站建立无线连接; 还可以包括:
第二反馈模块 1004: 用于反馈确认信息。
本实施例用于图 8所示的实施例中, 其特点不再赘述。 图 11为本发明实施例基站的结构示意图。 本实施例包括:
第四发送模块 1101 , 用于发送接口信息;
第五发送模块 1102, 用于向非服务基站发送用于和上述非服务基站进 行通信的上行轮询间隔;
第五接收模块 1103, 用于接收非服务基站发送的用于和上述非服务基 站进行通信的下行轮询间隔。
本实施例用于图 8所示的实施例中, 其特点不再赘述。 图 12为本发明实施例通信系统示意图。 本实施例包括:
中继 1201 , 用于接收服务基站发送的接口信息, 接收服务基站发送的 用于和非服务基站进行通信的下行轮询间隔, 根据上述接口信息以及下行 轮询间隔和非服务基站建立无线连接;
基站 1202, 用于发送接口信息, 向非服务基站发送用于和上述非服务 基站进行通信的上行轮询间隔, 接收非服务基站发送的用于和上述非服务 基站进行通信的下行轮询间隔。
本实施例用于图 8所示的实施例中, 其特点不再赘述。 通过以上的实施方式的描述, 本领域的技术人员可以清楚地了解到本 发明可以通过硬件实现, 也可以借助软件加必要的通用硬件平台的方式来 实现。 基于这样的理解, 本发明的技术方案可以以软件产品的形式体现出 来, 该软件产品可以存储在一个非易失性存储介质 (可以是 CD-ROM, U 盘, 移动硬盘等) 中, 包括若干指令用以使得一台计算机设备(可以是个 人计算机, 服务器, 或者网络设备等)执行本发明各个实施例上述的方法。 本领域技术人员可以理解附图只是一个优选实施例的示意图, 附图中 的模块或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实施例描 述进行分布于实施例的装置中, 也可以进行相应变化位于不同于本实施例 的一个或多个装置中。 上述实施例的模块可以合并为一个模块, 也可以进 一步拆分成多个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。
以上公开的仅为本发明的几个具体实施例, 但是, 本发明并非局限于 此, 任何本领域的技术人员能思之的变化都应落入本发明的保护范围。

Claims

权利要求
1. 一种中继与基站建立连接的方法, 其特征在于, 包括:
接收服务基站发送的接口信息;
获取所述接口信息中的资源信息, 所述资源信息用于指示所述中继和 所述非服务基站进行通信时使用的无线资源;
在所述资源信息所指示的无线资源上和所述非服务基站建立无线连 接。
2. 如权利要求 1所述的方法, 其特征在于, 所述获取所述接口信息中的 资源信息包括:
从所述接口信息中获取可用频段集合, 并选择上行和下行频段; 或 从所述接口信息中解析上行和下行频段。
3. 如权利要求 2所述的方法, 其特征在于, 所述接口信息中的可用频段 集合包括:
未被所述服务基站以及服务基站周围的基站使用的频段集合信息; 或 未被所述服务基站以及服务基站周围的基站使用的、 并且非服务基站 支持的频段集合信息。
4. 如权利要求 1所述的方法, 其特征在于, 所述获取所述接口信息中的 资源信息包括:
从所述接口信息中的可用上行和下行轮询间隔集合中选择上行和下行 频段; 或
从所述接口信息中解析上行和下行轮询间隔。
5. 如权利要求 4所述的方法, 其特征在于, 所述接口信息中的可用上行 和下行轮询间隔集合包括:
未被所述服务基站以及服务基站周围的基站使用的上行和下行轮询间 隔集合信息; 或 未被所述服务基站以及服务基站周围的基站使用的、 并且非服务基站 支持的上行和下行轮询间隔集合信息。
6. 如权利要求 1所述的方法, 其特征在于, 所述获取所述接口信息中的 资源信息包括:
从所述接口信息中的可用上行和下行时域和频域资源集合中选择上行 和下行时域和频域资源; 或
从所述接口信息中解析上行和下行时域和频域资源。
7. 如权利要求 1至 6中任意一项所述的方法, 其特征在于, 所述在所述 资源信息所指示的资源上和非服务基站建立无线连接之前, 还包括:
接收服务基站发送的、 要求所述中继与所述非服务基站发起随机接入 过程的信令。
8. 如权利要求 2至 6中任意一项所述的方法, 其特征在于, 还包括: 向所述服务基站发送所选择的资源信息。
9. 一种中继, 其特征在于, 包括:
第一接收模块, 用于接收服务基站发送的接口信息;
第一获取模块 , 用于获取所述第一接收模块接收的接口信息中的资源 信息, 所述资源信息用于指示所述中继和所述非服务基站进行通信时使用 的无线资源;
第一建立模块, 用于在所述第一获取模块获取的资源信息所指示的无 线资源上和所述非服务基站建立无线连接。
10. 如权利要求 9所述的中继, 其特征在于, 所述第一获取模块用于: 从所述接口信息中获取可用频段集合, 并选择上行和下行频段; 或 从所述接口信息中解析上行和下行频段。
11. 如权利要求 10所述的中继, 其特征在于, 所述第一获取模块用于: 从所述接口信息中获取可用频段集合, 并选择上行和下行频段, 其中, 所 述接口信息中的可用频段集合包括: 未被所述服务基站以及服务基站周围的基站使用的频段集合信息; 或 未被所述服务基站以及服务基站周围的基站使用的、 并且非服务基站 支持的频段集合信息。
12. 如权利要求 9所述的中继, 其特征在于, 所述第一获取模块用于: 从所述接口信息中的可用上行和下行轮询间隔集合中选择上行和下行 频段; 或
从所述接口信息中解析上行和下行轮询间隔。
13. 如权利要求 12所述的中继, 其特征在于, 所述第一获取模块用于: 从所述接口信息中的可用上行和下行轮询间隔集合中选择上行和下行频 段, 其中, 所述接口信息中的可用上行和下行轮询间隔集合包括:
未被所述服务基站以及服务基站周围的基站使用的上行和下行轮询间 隔集合信息; 或
未被所述服务基站以及服务基站周围的基站使用的、 并且非服务基站 支持的上行和下行轮询间隔集合信息。
14. 如权利要求 9所述的中继, 其特征在于, 所述第一获取模块用于: 从所述接口信息中的可用上行和下行时域和频域资源集合中选择上行 和下行时域和频域资源; 或
从所述接口信息中解析上行和下行时域和频域资源。
15. 如权利要求 10至 14中任意一项所述的中继, 其特征在于, 还包括: 第一反馈模块, 用于向服务基站发送所述第一获取模块所选择的资源 信息; 或
第二接收模块, 用于接收服务基站发送的、 要求所述中继与所述非服 务基站发起随机接入过程的信令, 并指示所述第一建立模块建立无线连接。
16. 一种基站, 其特征在于, 包括:
第二发送模块, 用于向中继发送接口信息, 所述接口信息中包括用于 指示所述中继和非服务基站进行通信时使用的无线资源的资源信息; 第三发送模块, 用于向非服务基站发送所述接口信息, 所述接口信息 中包括用于指示所述非服务基站和所述中继进行通信时使用的无线资源的 资源信息。
17.一种通信系统, 其特征在于, 包括:
中继, 用于接收服务基站发送的接口信息; 获取所述接口信息中的资 源信息, 所述资源信息用于指示所述中继和非服务基站进行通信时使用的 无线资源; 在资源信息所指示的资源上和非良务基站建立无线连接;
基站, 用于向中继发送接口信息, 所述接口信息中包括用于指示所述 中继和所述非服务基站进行通信时使用的无线资源的资源信息; 向非服务 基站发送所述接口信息, 所述接口信息中包括用于指示所述非服务基站和 所述中继进行通信时使用的无线资源的资源信息。
PCT/CN2010/075469 2009-07-29 2010-07-27 一种中继与基站建立连接的方法、设备和系统 WO2011012065A1 (zh)

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EP10803898A EP2448359A4 (en) 2009-07-29 2010-07-27 METHOD, DEVICE AND RELAY SYSTEM FOR ESTABLISHING A CONNECTION WITH A BASE STATION
RU2012107390/08A RU2518673C2 (ru) 2009-07-29 2010-07-27 Способ, устройство и система для установления соединения радиорелейной станции с базовой станцией
US13/358,196 US20120170505A1 (en) 2009-07-29 2012-01-25 Method, Device and System for a Relay to Establish a Connection with a Base Station

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US20120170505A1 (en) 2012-07-05
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RU2518673C2 (ru) 2014-06-10
CN101986762A (zh) 2011-03-16

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