WO2007128229A1

WO2007128229A1 - Access method, relay station, base station and system in wireless multi-hop relay access network

Info

Publication number: WO2007128229A1
Application number: PCT/CN2007/001449
Authority: WO
Inventors: Jimin Liu; Shan Jin; Erwu Liu; Gang Shen
Original assignee: Alcatel Lucent
Priority date: 2006-04-29
Filing date: 2007-04-28
Publication date: 2007-11-15
Also published as: CN101064901A; CN101064901B

Abstract

A network access method in relay access network is provided. Said relay access network includes base station, relay station and mobile station. Said network access method includes following steps: relay register step; mobile station synchronization and initialization step; monitor step, said relay station monitors signal quality parameters of said mobile station; filter step, it is not until mobile station is determined as an active mobile station of relay station that the ranging request and signal quality parameters of said mobile station are transmitted to said base station; collection step, said base station collects signal quality parameters directly from said mobile station and said relay station; and combined measure step, said base station synthesizes these signal quality parameters for combined measure, and determines whether said mobile station belongs to said base station or belongs to said relay station. Relay station, base station and wireless communication system using said method are also provided.

Description

无线多跳中继接入网的接入方法、中继站、基站和*** 技术领域 Access method, relay station, base station and system for wireless multi-hop relay access network

本发明一般地涉及宽带无线接入网，更特别地涉及无线多跳（ multi-hop ) 中继接入网的接入方法，以及使用该接入方法的中继站、基站和无线通信系统。背景技术 The present invention relates generally to broadband radio access networks, and more particularly to a method of accessing a wireless multi-hop relay access network, and a relay station, base station, and wireless communication system using the access method. Background technique

移动多跳中继在 IEEE 802.16标准化中是一个很新的概念。 2005年 7月， IEEE 802.16組成立了 "移动多跳中继"研究組来研究 WiMAX中继技术，并定义其既念和应用。 WiMAX ( World Interoperability for Microwave Access ) 意即全球微波接入互通，是基于 IEEE802.16标准的无线城域网技术。可以对比公知的 Wi-Fi来更好地理解 WiMAX。 Wi-Fi是一项无线局域网接入技术，其信号传输半径只有几百米。而 WiMAX是一项无线城域网接入技术，其信号传输半径达 50公里，基本上能覆盖到城郊。正是由于这种远距离传输特性， WiMAX将不仅仅是解决无线接入的技术，还能作为有线网络接入（Cable、 DSL (数字用户线））的无线扩展，方便地实现边远地区的网络连接。 Mobile multi-hop relay is a very new concept in IEEE 802.16 standardization. In July 2005, the IEEE 802.16 group established the "Mobile Multi-hop Relay" research group to study WiMAX relay technology and define its concepts and applications. WiMAX (World Interoperability for Microwave Access) is a wireless metropolitan area network technology based on the IEEE802.16 standard. WiMAX can be better understood than the well-known Wi-Fi. Wi-Fi is a wireless LAN access technology with a signal transmission radius of only a few hundred meters. WiMAX is a wireless metropolitan area network access technology with a signal transmission radius of 50 kilometers, which can basically cover the suburbs. Thanks to this long-distance transmission feature, WiMAX will not only solve the wireless access technology, but also be a wireless extension of wired network access (Cable, DSL (Digital Subscriber Line)), which can easily realize the network in remote areas. connection.

在宽带无线接入网中，基站负责控制并为每个用户终端或者移动台分配无线资源。可以考虑某些应用情形，诸如基站的小区内存在阴影空洞 ( shadowing hole ), 基站在低密度地区部署、大量地部署微蜂窝基站不很经济或者其它类似的情形。中继站可以用来覆盖阴影空洞和扩展覆盖范围，并且成本效率较高。在另一些情形下，中继站也可以用来改善空间的传播环境进而增强吞吐量。基于以上考虑， 2006年初， IEEE表决通过了 "移动多跳中继"研究組的项目授权请求（PAR ),正式的 IEEE 80².16j工作组就此成立，以便在 802.16小区内引入中继站以实现增强吞吐量和扩展覆盖范围。在小区内引入中继站会为移动台和中继站（ Relay Station )的网矣入和初始化过程带来一些变化和更新。因此，本发明所描述的新机制就着眼于移动台 /中继站的网络接入和初始 4匕方面。 In a broadband radio access network, the base station is responsible for controlling and allocating radio resources for each user terminal or mobile station. Some application scenarios may be considered, such as shadowing holes in a cell of a base station, deployment of a base station in a low-density area, and deployment of a micro-cell base station in a large amount, which is not economical or the like. Relay stations can be used to cover shadow holes and extend coverage, and are cost effective. In other cases, the relay station can also be used to improve the propagation environment of the space and thereby enhance throughput. Based on the above considerations, in early 2006, IEEE voted to adopt a "mobile multi-hop relay" project authorization request Study Group (PAR), the official IEEE 80 ² .16j this working group was established in order to introduce a relay station in the district in order to achieve enhanced 802.16 Throughput and extended coverage. Introducing a relay station in a cell brings some changes and updates to the network intrusion and initialization process of the mobile station and the relay station. Therefore, the new mechanism described by the present invention focuses on the network access and initial aspects of the mobile station/relay station.

移动台必须首先经过网络接入过程才能为基站所识别。但是因为在基站和移动台之间引入了中继站，网络接入过程会发生变化，一些问题也出现了。例如，当一个移动台在小区之外或者在阴影空洞内，移动台因为不能收到基站的下行广播信息而无法象往常一样开始网络接入过程。中继站不得不在基站和移动台之间中继控制消息。因此，必须有一种新的机制来进行移动台和中继站的网络接入过程，并且考虑到移动台的后向兼容性。 The mobile station must first pass through the network access procedure in order to be identified by the base station. However, because a relay station is introduced between the base station and the mobile station, the network access process changes, and some problems also arise. For example, when a mobile station is outside the cell or in a shadow hole, the mobile station cannot receive the base because The downlink broadcast information of the station cannot start the network access process as usual. The relay station has to relay control messages between the base station and the mobile station. Therefore, there must be a new mechanism for the network access procedure of the mobile station and the relay station, and considering the backward compatibility of the mobile station.

存在的第一个问题是移动台归属问题，即移动台归属到基站还是中继站。移动台归属问题与基站上的资源分配相关。如果移动台归属到中继站，基站应该先发送数据业务到中继站，然后再由中继站转发到移动台。尽管中继站的引入能够提高基站-移动台之间和移动台 -基站之间两段链路上的数据传输速率，但结果基站却为该移动台分配了双份资源。因此，需要在移动台网络接入过程中充分考虑引入中继站后带来的资源分配效率变化。另一个考虑与移动台耗电量有关。当移动台处于小区边缘或者深度衰落区域时，移动台必须调整到最大的发射功率。但是，移动台的电池将在比平常短得多的时间内毛尽。在基站和移动台间的空中链路中引入了中继站后，移动台的能量消耗被大量地降低了。这对于将移动台的归属权从基站转移到中继台是很有用的。 The first problem that exists is the mobile station attribution problem, ie whether the mobile station is home to the base station or the relay station. The mobile station attribution problem is related to resource allocation on the base station. If the mobile station is home to the relay station, the base station should first transmit the data traffic to the relay station and then forward it to the mobile station by the relay station. Although the introduction of the relay station can increase the data transmission rate on the two links between the base station-mobile station and the mobile station-base station, the base station allocates duplicate resources for the mobile station. Therefore, it is necessary to fully consider the resource allocation efficiency change brought about by the introduction of the relay station in the mobile station network access process. Another consideration relates to the power consumption of the mobile station. When the mobile station is in the cell edge or deep fading area, the mobile station must adjust to the maximum transmit power. However, the mobile station's battery will be exhausted in a much shorter period of time than usual. After the introduction of the relay station in the air link between the base station and the mobile station, the energy consumption of the mobile station is greatly reduced. This is useful for transferring the mobile station's ownership from the base station to the repeater.

存在的另一个问题是中继站是否应该发送同步和广播信息。如果无需中继站参与，移动台就能从基站接收到同步和广播信息，则中继站可以用来改善移动台的上行链路和下行链路的调制编码速率，或者降低移动台的发射功率。如果是其他情况，则中继站会发送同步和广播信息到移动台，使移动台能够进行网络接入过程。 Another issue that exists is whether the relay should send synchronization and broadcast information. If the mobile station can receive synchronization and broadcast information from the base station without the need for a relay station to participate, the relay station can be used to improve the modulation coding rate of the uplink and downlink of the mobile station, or to reduce the transmission power of the mobile station. If it is otherwise, the relay station will send synchronization and broadcast information to the mobile station, enabling the mobile station to perform the network access procedure.

本发明着重于使用合并检测的方法，完成中继站和移动台的基本网络接入机制。基站收集中继站和基站上接收的信号质量测量结果，以及在移动台上发送的控制消息中指定的能够支持的下行突发包信息，从而通过综合评估这些参数来对移动台归属以及中继站是否转发广播信息得出结论。本发明可以广泛地应用于基于中继站的宽带无线接入网。 The present invention focuses on the use of a method of combined detection to complete the basic network access mechanism of the relay station and the mobile station. The base station collects the signal quality measurement results received on the relay station and the base station, and the downlink burst packet information that can be supported in the control message sent on the mobile station, thereby comprehensively evaluating the parameters to the mobile station attribution and whether the relay station forwards the broadcast. The information draws conclusions. The present invention can be widely applied to a broadband wireless access network based on a relay station.

因此，本发明的目的是提供一种采用上述合并检测来解决移动台归属问题和中继站转发广播信息问题的网络接入方法、中继站、基站和无线通信系统。发明内容 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a network access method, a relay station, a base station, and a wireless communication system that solve the problem of mobile station attribution and relay station forwarding broadcast information by using the above-described merge detection. Summary of the invention

本发明的的首先通过一种中继接入网的网络接入方法来实现。其中所述中继接入网包括基站、中继站和移动台，所述网络接入方法包括如下步骤：中继站注册步骤，其中所述中继站接入到网络，并向所述基站表明其是一个中继站； The invention is first implemented by a network access method of a relay access network. The relay access network includes a base station, a relay station, and a mobile station, and the network access method includes the following steps: a relay station registration step, wherein the relay station accesses a network, and indicates to the base station that it is a relay station;

移动台同步和初始化步骤，其中所述移动台与所述基站的下行链路信道同步，并使用所述基站分配的专用资源发送测距请求消息； a mobile station synchronization and initialization step, wherein the mobile station synchronizes with a downlink channel of the base station, and transmits a ranging request message using a dedicated resource allocated by the base station;

监测步骤，其中所述中继站监测所述移动台的信号质量参数； a monitoring step, wherein the relay station monitors a signal quality parameter of the mobile station;

过滤步骤，其中判断所述移动台是否为所述中继站的活动移动台，并且当判断所述移动台为中继站的活动移动台时才将所述移动台的测距请求消息和信号质量参数转发给所述基站； a filtering step, wherein determining whether the mobile station is an active mobile station of the relay station, and forwarding the ranging request message and signal quality parameter of the mobile station to the mobile station when determining that the mobile station is an active mobile station of the relay station The base station;

收集步骤，其中所述基站收集直接来自所述移动台的信号质量参数和所述中继站所监测的信号质量参数；以及 a collecting step, wherein the base station collects signal quality parameters directly from the mobile station and signal quality parameters monitored by the relay station;

合并检测步骤，其中所述基站综合这些信号质量参数来进行合并检测，以确定将所述移动台归属于所述基站还是归属于所述中继站。 A merge detection step, wherein the base station synthesizes the signal quality parameters for combined detection to determine whether the mobile station is attributed to the base station or to the relay station.

本发明的目的还通过一种用于中继接入网的中继站来实现。其中所述中继接入网包括基站、中继站和移动台，所述中继站包括： The object of the invention is also achieved by a relay station for a relay access network. The relay access network includes a base station, a relay station, and a mobile station, and the relay station includes:

接收机，用于接收并监测移动台的信号质量参数以及用于接收来自基站的消息； a receiver for receiving and monitoring signal quality parameters of the mobile station and for receiving a message from the base station;

过滤单元，用于确定所述移动台是否为活动的移动台； a filtering unit, configured to determine whether the mobile station is an active mobile station;

发射机，用于： Transmitter, for:

向所述基站表明所述中继站是一个中继站； Dedicating to the base station that the relay station is a relay station;

在确定所述移动台为所述中继站的活动移动台之后，才将所述移动台的测距请求消息转发给基站；以及 After determining that the mobile station is an active mobile station of the relay station, forwarding the ranging request message of the mobile station to the base station;

在所述移动台归属于所述中继站时，将由所述接收机接收的所述基站的测距响应消息转发给所述移动台并发送同步和广播信息。 When the mobile station is at the relay station, the ranging response message of the base station received by the receiver is forwarded to the mobile station and the synchronization and broadcast information is transmitted.

本发明的目的还通过一种中继接入网的基站来实现。其中所述中继接入网包括基站、中继站和移动台，所述基站包括： The object of the invention is also achieved by a base station of a relay access network. The relay access network includes a base station, a relay station, and a mobile station, and the base station includes:

接收机，用于收集直接来自移动台的信号盾量参数和所述中继站所监测的所述移动台的信号质量参数； a receiver for collecting signal shield parameters directly from the mobile station and signal quality parameters of the mobile station monitored by the relay station;

合并检测单元，用于综合这些信号质量参数来进行合并检测，以确定将所述移动台归属于所述基站还是所述中继站；以及 Combining detection units for synthesizing the signal quality parameters for combining detection to determine whether the mobile station is attributed to the base station or the relay station;

发射机，用于在所述合并检测单元确定将所述移动台归属于所述基站时向所述移动台返回测距响应消息，或在所述合并检测单元确定将所述移动台归属于所述中继站时向所述中继站返回测距响应消息。 a transmitter, configured to return a ranging response message to the mobile station when the merge detecting unit determines that the mobile station belongs to the base station, or determine, at the merge detecting unit, that the mobile station belongs to the The ranging response message is returned to the relay station when the relay station is described.

本发明的目的还通过一种无线通信***来实现。所述***包括：一个或多个移动台； The object of the invention is also achieved by a wireless communication system. The system includes: One or more mobile stations;

上述根据本发明的基站； The above base station according to the present invention;

上述根据本发明的中继站，用于在所述移动台和所述基站之间转发消息以增加所述移动台的吞吐量和 /或扩展所述基站的覆盖范围。 The relay station according to the present invention is for forwarding a message between the mobile station and the base station to increase the throughput of the mobile station and/or to extend the coverage of the base station.

本发明的一个优点在于后向兼容性。移动台不 4故任何更改就能应用于有中继站存在的基站小区。移动台只需采用原有的网络接入和初始化过程就能完成网络的接入，并不知晓中继站的存在。 One advantage of the present invention is backward compatibility. The mobile station does not apply any changes to the base station cell where the relay station exists. The mobile station only needs to use the original network access and initialization process to complete the network access, and does not know the existence of the relay station.

本发明的另一个优点在于能够高效地提高移动台吞吐量和优化移动台的电池使用时间。起初，中继站监测测距请求消息的信号质量。如果信号质量不好，该测距请求消息将不会转发至基站。这能够避免中继站到基站之间的无用的带宽消耗。另一方面，通过合并检测方法，由于中继站的存在而增加移动台的电池使用时间。所有这些控制都来自于基站。 Another advantage of the present invention is the ability to efficiently increase mobile station throughput and optimize battery life of the mobile station. Initially, the relay station monitors the signal quality of the ranging request message. If the signal quality is not good, the ranging request message will not be forwarded to the base station. This can avoid useless bandwidth consumption between the relay station and the base station. On the other hand, by the combined detection method, the battery life of the mobile station is increased due to the presence of the relay station. All of these controls come from the base station.

本发明的另一个优点在于能够实现中继站的自配置。中继站有两种用处，即增强吞吐量和扩展覆盖范围。通过合并检测方法，基站将决定是否需要中继站发送同步和广播信息。例如，如果中继站从小区外进入小区内，则中继站最好选择为起到增强吞吐量的作用。 Another advantage of the present invention is that it enables self-configuration of the relay station. There are two uses for relay stations, namely enhanced throughput and extended coverage. Through the combined detection method, the base station will decide whether or not the relay station needs to send synchronization and broadcast information. For example, if the relay station enters the cell from outside the cell, the relay station is preferably selected to function to enhance throughput.

同时，本发明的变型也能支持中继站选择流程以及中继站移动性流程。另外，本发明的方案与中继站所采用的帧结构无关，也就是说本发明是一种更为通用的方法。因此本发明的使用范围并不限于 IEEE 802.16标准。附图说明 At the same time, variations of the present invention can also support relay station selection procedures as well as relay station mobility procedures. In addition, the solution of the present invention is independent of the frame structure employed by the relay station, that is, the present invention is a more general method. Therefore, the scope of use of the present invention is not limited to the IEEE 802.16 standard. DRAWINGS

根据以下参照附图对本发明实施例的详细描述，本发明的其他特征、应用和优点将变得明显，其中相同的参考标号代表相同或相应的組件或步骤，其中： Other features, applications, and advantages of the present invention will become apparent from the Detailed Description of Drawing Description

图 1是现有技术中的无线网络接入方法的示意性流程图； 1 is a schematic flowchart of a method for accessing a wireless network in the prior art;

图 2是采用本发明方法的无线通信***的示意性结构图； 2 is a schematic structural diagram of a wireless communication system employing the method of the present invention;

图 3是根据本发明的中继站的示意性结构图； Figure 3 is a schematic structural view of a relay station in accordance with the present invention;

图 4是根据本发明的基站的示意性结构图； 4 is a schematic structural diagram of a base station according to the present invention;

图 5是根据本发明第一实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图； FIG. 5 is a schematic flowchart of a network access method for a wireless multi-hop relay access network according to a first embodiment of the present invention; FIG.

图 6是根据本发明第二实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图；图 Ί是根据本发明第三实施例的用于无线多跳中继接入网的网矣入方法的示意性流程图； 6 is a schematic flowchart of a network access method for a wireless multi-hop relay access network according to a second embodiment of the present invention; Figure Ί is a schematic flowchart of a network intrusion method for a wireless multi-hop relay access network according to a third embodiment of the present invention;

图 8是根据本发明第四实施例的用于无线多跳中继接入网的网^ 入方法的示意性流程图； FIG. 8 is a schematic flowchart of a network loading method for a wireless multi-hop relay access network according to a fourth embodiment of the present invention; FIG.

图 9是根据本发明第五实施例的用于无线多跳中继接入网的网矣入方法的示意性流程图； 9 is a schematic flowchart of a network intrusion method for a wireless multi-hop relay access network according to a fifth embodiment of the present invention;

图 10是根据本发明第六实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图；以及 FIG. 10 is a schematic flowchart of a network access method for a wireless multi-hop relay access network according to a sixth embodiment of the present invention; and

图 11 是根据本发明第七实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图。具体实施方式 11 is a schematic flowchart of a network access method for a wireless multi-hop relay access network according to a seventh embodiment of the present invention. detailed description

图 1是现有技术中的无线网络接入方法的示意性流程图。首先，在步骤 101 中，移动台与基站的下行链路信道同步，并使用专用资源向基站发送测距请求消息。接着，在步骤 102中，基站向移动台发送测距响应消息。然后，如图 1所示，接入过程结束。虽然图 1只是示例性的，但可以很容易地看出，图 1所示的无线网络接入方法不涉及中继站。在某些应用情况下，诸如基站的小区存在少量阴影空洞（ shadowing hole )，或者基站部署在低密度区域，此时移动台就无法正常通信。此外，当移动台位于小区边缘或深度衰落区域时，移动台应当将发射功率调整为最大值，此时，与正常情况相比，电池电量会在很短的时间内耗尽。 FIG. 1 is a schematic flowchart of a method for accessing a wireless network in the prior art. First, in step 101, the mobile station synchronizes with the downlink channel of the base station and transmits a ranging request message to the base station using dedicated resources. Next, in step 102, the base station transmits a ranging response message to the mobile station. Then, as shown in Figure 1, the access process ends. Although FIG. 1 is merely exemplary, it can be easily seen that the wireless network access method shown in FIG. 1 does not involve a relay station. In some applications, a cell such as a base station has a small number of shadowing holes, or a base station is deployed in a low-density area, at which point the mobile station cannot communicate properly. In addition, when the mobile station is located at the cell edge or the deep fading area, the mobile station should adjust the transmission power to the maximum value. At this time, the battery power is exhausted in a short time compared with the normal case.

图 2是采用本发明方法的无线通信*** 200的示意性结构图。图中只示出了参与接入过程的基站 220、中继站 210和移动台 230之间相互通信的示意图。如图 2中所示，移动台 230可以直接与基站 220进行通信，并且也可以通过中继站 210与基站 220进行通信。根据下文参照图 5描述的合并检测来确定是否在移动台 230的接入过程中引入中继站 210。注意，该图只是示意性的，实际的无线通信***中应包括更多的組件。 2 is a schematic block diagram of a wireless communication system 200 employing the method of the present invention. Only the illustration of communication between the base station 220, the relay station 210, and the mobile station 230 participating in the access procedure is shown. As shown in FIG. 2, mobile station 230 can communicate directly with base station 220 and can also communicate with base station 220 via relay station 210. Whether or not the relay station 210 is introduced in the access procedure of the mobile station 230 is determined according to the merge detection described below with reference to FIG. Note that this figure is only illustrative, and more components should be included in the actual wireless communication system.

图 3是根据本发明的中继站 210的示意性结构图。图中只示出了接收机 211、过滤单元 212和发射机 213。接收机 211用于监测移动台 230的信号质量参数。在本发明的一个实施例中，过滤单元 212用于确定移动台 230是否为活动的移动台。发射机 213用于向基站 220表明中继站 210是一个中继站，用于在确定移动台 230为活动的移动台之后，才将其测距请求消息转发给基站 220, 并且用于在移动台 230归属于中继站 210时，将来自基站 220的测距响应消息转发给移动台 230并发送同步和广播信息。在本发明的另一个实施例中，接收机 211通过接收上行链路数据突发包或测距请求消息来监测移动台 230的信号质量参数。在本发明的另一个实施例中，过滤单元 212确定活动的移动台 230包括基于多个帧中的基站 220下行链路广播信息来测量移动台 230的信号质量或功率，并且其中如果移动台 230的信号质量或功率高于特定门限，则将移动台 230确定为活动的移动台 230，或者如果移动台 230 的信号质量或功率低于特定门限，则将移动台 230 确定为不活动的移动台 230。在本发明的另一个实施例中，过滤单元 212还估计活动的移动台 230 与中继站 210之间的时间偏移。在本发明的另一个实施例中，过滤单元 212 还将活动的移动台 230的测距请求消息转换为 MAC消息，或在中继站 210 测距子信道中对其进行转发，以便在一个帧中转发活动的移动台 230的测距请求消息。在本发明的另一个实施例中，发射机 213 通过向基站 220发送 MAC消息来向基站 220表明中继站 210是一个中继站。注意，该图只是示意性的，实际的中继站中应包括更多的組件。 Figure 3 is a schematic block diagram of a relay station 210 in accordance with the present invention. Only the receiver 211, the filtering unit 212, and the transmitter 213 are shown in the figure. Receiver 211 is operative to monitor signal quality parameters of mobile station 230. In one embodiment of the invention, filtering unit 212 is operative to determine if mobile station 230 is an active mobile station. The transmitter 213 is configured to indicate to the base station 220 that the relay station 210 is a relay station for forwarding the ranging request message to the base station after determining that the mobile station 230 is an active mobile station. Station 220, and for forwarding a ranging response message from base station 220 to mobile station 230 and transmitting synchronization and broadcast information when mobile station 230 is home to relay station 210. In another embodiment of the invention, receiver 211 monitors the signal quality parameters of mobile station 230 by receiving an uplink data burst or ranging request message. In another embodiment of the present invention, the filtering unit 212 determines that the active mobile station 230 includes measuring the signal quality or power of the mobile station 230 based on the base station 220 downlink broadcast information in the plurality of frames, and wherein if the mobile station 230 The mobile station 230 is determined to be the active mobile station 230 if the signal quality or power is above a certain threshold, or the mobile station 230 is determined to be the inactive mobile station if the signal quality or power of the mobile station 230 is below a certain threshold. 230. In another embodiment of the invention, filtering unit 212 also estimates the time offset between active mobile station 230 and relay station 210. In another embodiment of the present invention, the filtering unit 212 also converts the ranging request message of the active mobile station 230 into a MAC message or forwards it in the ranging subchannel of the relay station 210 for forwarding in one frame. The ranging request message of the active mobile station 230. In another embodiment of the invention, transmitter 213 indicates to base station 220 that relay station 210 is a relay station by transmitting a MAC message to base station 220. Note that this figure is only illustrative and more components should be included in the actual relay station.

图 4是根据本发明的基站 220 的示意性结构图。图中只示出了接收机 221、合并检测单元 222、发射机 213和数据库 224。在本发明的一个实施例中，接收机 221用于收集直接来自移动台 230的信号质量参数和中继站 210 所监测的移动台 230的信号质量参数。合并检测单元 222用于综合这些信号质量参数来进行合并检测 , 以确定将移动台 230归属于基站 220还是中继站 210。在本发明的一个实施例中，以信号质量报告的形式提供这些信号质量参数。这些信号质量参数可以是发射功率、信干比、信噪比、误包率、误码率和 /或载干比。发射机 213用于在合并检测单元 222确定将移动台 230归属于基站 220时向移动台 230返回测距响应消息，或在合并检测单元 222确定将移动台 230归属于中继站 210时向中继站 210返回测距响应消息。 4 is a schematic block diagram of a base station 220 in accordance with the present invention. Only the receiver 221, the merge detection unit 222, the transmitter 213, and the database 224 are shown. In one embodiment of the invention, receiver 221 is operative to collect signal quality parameters directly from mobile station 230 and signal quality parameters of mobile station 230 monitored by relay station 210. The merge detection unit 222 is configured to synthesize these signal quality parameters for combined detection to determine whether the mobile station 230 is assigned to the base station 220 or the relay station 210. In one embodiment of the invention, these signal quality parameters are provided in the form of signal quality reports. These signal quality parameters may be transmit power, signal to interference ratio, signal to noise ratio, packet error rate, bit error rate, and/or carrier to interference ratio. The transmitter 213 is configured to return a ranging response message to the mobile station 230 when the merge detecting unit 222 determines to assign the mobile station 230 to the base station 220, or return to the relay station 210 when the merge detecting unit 222 determines that the mobile station 230 belongs to the relay station 210. Ranging response message.

在本发明的另一个实施例中，合并检测单元 222确定将移动台 230归属于基站 220还是中继站 210包括： In another embodiment of the present invention, determining whether the merge detecting unit 222 assigns the mobile station 230 to the base station 220 or the relay station 210 includes:

在第一种情况下，即如果接收机 221只接收到来自移动台 230的测距请求消息，则确定将移动台 230归属于基站 220; In the first case, that is, if the receiver 221 receives only the ranging request message from the mobile station 230, it is determined that the mobile station 230 is attributed to the base station 220;

在第二种情况下，即如果接收机 221只接收到由中继站 210转发的移动台 230的测距请求消息，则确定将移动台 230归属于中继站 210; 或者 In the second case, i.e., if the receiver 221 receives only the ranging request message of the mobile station 230 forwarded by the relay station 210, it is determined that the mobile station 230 is attributed to the relay station 210; or

在第三种情况下，即如果接收机 221同时接收到来自移动台 230的测距请求消息和由中继站 210转发的移动台 230的测距请求消息，则根据直接来自移动台 230的信号质量参数、中继站 210所监测的信号质量参数、移动台 230 所发送的测距请求消息中所带有的其可接受的下行突发包信息来确定将移动台 230归属于基站 220还是中继站 210。 In the third case, that is, if the receiver 221 simultaneously receives ranging from the mobile station 230 The request message and the ranging request message of the mobile station 230 forwarded by the relay station 210 are based on the signal quality parameter directly from the mobile station 230, the signal quality parameter monitored by the relay station 210, and the ranging request message transmitted by the mobile station 230. With its acceptable downlink burst packet information, it is determined whether the mobile station 230 is assigned to the base station 220 or the relay station 210.

在本发明的另一个实施例中，在上述第三种情况下，合并检测单元 222 确定将移动台 230归属于基站 220还是中继站 210包括估计中继站 210的位置，并且其中如果所估计的中继站 210的位置在小区边缘或阴影空洞附近，则将移动台 230归属于中继站 210。 In another embodiment of the present invention, in the third case described above, the merge detecting unit 222 determines whether to assign the mobile station 230 to the base station 220 or the relay station 210 includes estimating the location of the relay station 210, and wherein if the estimated relay station 210 The mobile station 230 is attributed to the relay station 210 when the location is near the edge of the cell or near the shadow hole.

在本发明的另一个实施例中，在上述第三种情况下，基站 220确定将移动台 230归属于基站 220还是中继站 210包括： In another embodiment of the present invention, in the third case, the determining by the base station 220 whether the mobile station 230 belongs to the base station 220 or the relay station 210 includes:

计算有中继站 210时的平均数据传输速率 Ri或移动台的功率消耗？,和无中继站 210时的平均数据传输速率 R₂或移动台的功率消耗 P₂；以及 Is the average data transmission rate Ri or the power consumption of the mobile station when the relay station 210 is calculated? And the average data transmission rate R ₂ when there is no relay station 210 or the power consumption P _{2 of the} mobile station;

将与 2R₂相比较或将与 P₂相比较；并且其中 Will be compared to 2R ₂ or will be compared to P ₂ ; and

如果以移动台 230吞吐量为衡量标准，则当 R!<2R₂时，确定将移动台 230归属于基站 220, 否则就确定将移动台 230归属于中继站 210; 或者 If the mobile station 230 throughput is used as a measure, then when R!<2R ₂ , it is determined that the mobile station 230 belongs to the base station 220, otherwise it is determined that the mobile station 230 belongs to the relay station 210; or

如果以功率消耗为衡量标准，则当 P^Pz时，确定将移动台 230归属于中继站 210, 否则就确定将移动台 230归属于基站 220。 If power consumption is used as a measure, then when P^Pz, it is determined that the mobile station 230 is attributable to the relay station 210, otherwise it is determined that the mobile station 230 is attributable to the base station 220.

在本发明的另一个实施例中，基站 220还包括数据库 224, 用于存储活动的移动台 230的列表。注意，该图只是示意性的，实际的基站中应包括更多的組件。 In another embodiment of the invention, base station 220 also includes a database 224 for storing a list of active mobile stations 230. Note that this figure is only illustrative and more components should be included in the actual base station.

图 5是根据本发明第一实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图。首先，在中继站注册步骤中，中继站 210接入到网络，，并向基站 220表明中继站 210是一个中继站。当在基站 220的小区中部署新的中继站 210时，基站 220会在空中接口上为该中继站 210分配无线资源，以便该中继站 210可以对移动台 230的用户业务或控制消息进行中继。中继站注册步骤 501会影响基站 220对中继站 210的资源分配。具体而言，中继站 210同步和初始化与常规的移动台 230的同步和初始化类似，只是中继站 210会以特定的方式向基站 220表明其是一个中继站并向基站 220报告特定信息。例如，在本发明的一个实施例中，在中继站 210的测距和认证过程之后，中继站 210会向基站 220发送 MAC (媒体访问控制）管理消息以表明其是一个中继站。然后，基站 220会对该中继站 210进行识别，并随后为该中继站 210分配特定的无线资源用于业务中继。为基站 220为中继站 210分配的无线资源可以是一个或多个符号或一个帧中的一个或多个时隙。接着，在移动台同步和初始化步骤 502中，移动台 230与基站 220的下行链路信道同步，并使用专用资源向基站 220发送测距请求消息。移动台同步和初始化步骤 502会影响移动台 230的连接。对于本发明，为确保移动台 230的后向兼容，不需要对移动台 230进行任何改变。移动台 230只需要按照常规的流程来进行处理。换言之，中继站 210对移动台 230来说是透明的。对于下行链路信道扫描和同步，处理过程与常规过程完全相同。首先，移动台 230应同步到基站 220的下行链路信道并通过 MAC管理消息来学习上行链路信道特征。然后，移动台 230使用专用资源向基站 220发送测距请求消息。在本发明的一个实施例中，这些专用资源可以是多个载波、时隙、子信道、 OFDM 符号。移动台 230不需要知道该测距请求消息会由中继站 210还是基站 220 接收。接着，在监测步驟 503中，中继站 210监测移动台 230的信号质量参数。有可能有多个移动台 230同时发送测距情求消息，中继站 210会对这些测距请求消息进行监测。在本发明的一个实施例中，中继站 210通过接收上行链路数据突发包或测距请求消息来监测移动台 230的信号质量参数。中继站 210测量这些测距请求消息的信号功率。在本发明的另一个实施例中，中继站 210还估计移动台 230与中继站 210之间的时间偏移。在中继站 210与移动台 230之间可以进行多次针对测距处理的数据交换。接着，在过滤步骤 504中，中继站 210确定移动台 230为活动的移动台时才将其测距请求消息转发给基站 220。在本发明的一个实施例中，为加速转发，可以将活动的移动台 230 的测距请求消息转换为 MAC 消息，或在中继站 210测距子信道 ( ranging subchannel ) 中对其进行转发，以便在一个帧中转发该活动的移动台 230的测距请求消息。接着，在收集步骤 505中，基站 220收集直接来自移动台 230的信号质量参数和中继站 210所监测的信号质量参数。在本发明的一个实施例中，收集步骤 505还包括在基站 220上生成和维护活动的移动台 230的列表。接着，在合并检测步骤 506中，基站 220综合这些信号质量参数来进行合并检测，以确定将移动台 230归属于基站 220还是中继站 210。在本发明的一个实施例中，基站 220测量来自移动台 230的测距请求消息的信号功率，以确定是否需要对该移动台 230进行中继。如果直接的移动台 - 基站通信的信号质量足够好，则不需要对移动台 230进行中继，基站 220只需要向移动台 230返回测距响应消息，而不必考虑中继站 210的存在。所有的后续步骤都与现有技术的常规步骤相同。在本发明的一个实施例中，如果移动台 230位于小区边缘或阴影空洞附近，则基站 220不能接收到来自移动台 230的测距请求消息，而只能接收到由中继站 210转发的移动台 230的测距请求消息。必须根据来自中继站 210的信号质量报告以及移动台 230能够接收到的所需下行链路突发特征数据来判断将移动台 230归属于基站 220还是中继站 210。在合并检测步骤中，基站 220综合直接来自移动台 230的测距请求消息的信号质量参数、由中继站 210转发的移动台的测距请求消息的信号质量参数、移动台 230所发送的测距请求消息中所带有的其可接受的下行突发包信息，从而判断移动台 230是否在中继站 210的覆盖区域内。在本发明的一个实施例中，以信号质量报告的形式提供信号质量参数。信号质量参数可以是发射功率、信干比、信噪比、误包率、误码率、载干比，但不限于这些参数。这些参数对于估计移动台的位置很重要。在此，信号质量报告只是用以进行测量和报告的一个示例性参数，设备提供商可以根据需要选择其他参数。在本发明的一个实施例中，在完成合并检测步骤之后，基站 220 会南移动台 230返回带有功率调整级别的测距响应消息。该测距响应消息可以由中继站 210转发给移动台 230。在本发明的另一个实施例中，基站 220 收集中继站 210处和基站 220处的信号质量测量结果，并在下行链路上以突发的形式发送包含在移动台 230所发送的控制消息中的特征数据信息，然后开始对移动台 230连接和转发中继站 210广播信息进行最终的判断。然后，如图 5所示，处理结束。注意，该图只是示例性的，实际的无线网络接入过程可以包括更多的步骤。 FIG. 5 is a schematic flowchart of a network access method for a wireless multi-hop relay access network according to a first embodiment of the present invention. First, in the relay station registration step, the relay station 210 accesses the network, and indicates to the base station 220 that the relay station 210 is a relay station. When a new relay station 210 is deployed in the cell of base station 220, base station 220 will allocate radio resources to the relay station 210 over the air interface so that the relay station 210 can relay user traffic or control messages for mobile station 230. The relay station registration step 501 affects the resource allocation of the base station 220 to the relay station 210. In particular, relay station 210 synchronization and initialization is similar to synchronization and initialization of conventional mobile station 230, except that relay station 210 will indicate to base station 220 that it is a relay station and report specific information to base station 220 in a particular manner. For example, in one embodiment of the invention, after the ranging and authentication process of the relay station 210, the relay station 210 transmits a MAC (Media Access Control) management message to the base station 220 to indicate that it is a relay station. The base station 220 then identifies the relay station 210 and then assigns the relay station 210 a particular radio resource for service relay. For the base station 220, the relay station 210 is divided into The allocated radio resource can be one or more symbols or one or more time slots in a frame. Next, in mobile station synchronization and initialization step 502, mobile station 230 synchronizes with the downlink channel of base station 220 and transmits a ranging request message to base station 220 using dedicated resources. Mobile station synchronization and initialization step 502 affects the connection of mobile station 230. For the present invention, to ensure backward compatibility of the mobile station 230, no changes to the mobile station 230 are required. The mobile station 230 only needs to be processed in accordance with a conventional flow. In other words, the relay station 210 is transparent to the mobile station 230. For downlink channel scanning and synchronization, the processing is identical to the normal process. First, mobile station 230 should synchronize to the downlink channel of base station 220 and learn the uplink channel characteristics through the MAC management message. The mobile station 230 then transmits a ranging request message to the base station 220 using dedicated resources. In one embodiment of the invention, these dedicated resources may be multiple carriers, time slots, subchannels, OFDM symbols. The mobile station 230 does not need to know whether the ranging request message will be received by the relay station 210 or the base station 220. Next, in a monitoring step 503, the relay station 210 monitors the signal quality parameters of the mobile station 230. It is possible that a plurality of mobile stations 230 simultaneously transmit ranging request messages, and the relay station 210 monitors these ranging request messages. In one embodiment of the invention, relay station 210 monitors the signal quality parameters of mobile station 230 by receiving an uplink data burst or ranging request message. Relay station 210 measures the signal power of these ranging request messages. In another embodiment of the invention, relay station 210 also estimates the time offset between mobile station 230 and relay station 210. A plurality of data exchanges for the ranging process can be performed between the relay station 210 and the mobile station 230. Next, in the filtering step 504, the relay station 210 determines that the mobile station 230 is an active mobile station and forwards its ranging request message to the base station 220. In an embodiment of the present invention, to speed up forwarding, the ranging request message of the active mobile station 230 may be converted into a MAC message or forwarded in the ranging subchannel of the relay station 210 to A ranging request message for the active mobile station 230 is forwarded in one frame. Next, in a collection step 505, the base station 220 collects signal quality parameters directly from the mobile station 230 and signal quality parameters monitored by the relay station 210. In one embodiment of the invention, the collecting step 505 further includes generating and maintaining a list of active mobile stations 230 on the base station 220. Next, in the merge detection step 506, the base station 220 synthesizes these signal quality parameters for combined detection to determine whether the mobile station 230 is to be attributed to the base station 220 or the relay station 210. In one embodiment of the invention, base station 220 measures the signal power of the ranging request message from mobile station 230 to determine if relay station 230 needs to be relayed. If the direct mobile station-base station communication signal quality is good enough, there is no need to relay the mobile station 230, and the base station 220 only needs to return a ranging response message to the mobile station 230, regardless of the presence of the relay station 210. All subsequent steps are the same as the conventional steps of the prior art. In an embodiment of the invention, if When the mobile station 230 is located near the cell edge or the shadow hole, the base station 220 cannot receive the ranging request message from the mobile station 230, but can only receive the ranging request message of the mobile station 230 forwarded by the relay station 210. The mobile station 230 must be attributed to the base station 220 or the relay station 210 based on the signal quality report from the relay station 210 and the required downlink burst characteristic data that the mobile station 230 can receive. In the merge detection step, the base station 220 integrates the signal quality parameter of the ranging request message directly from the mobile station 230, the signal quality parameter of the ranging request message of the mobile station forwarded by the relay station 210, and the ranging request transmitted by the mobile station 230. The acceptable downlink burst packet information carried in the message determines whether the mobile station 230 is within the coverage area of the relay station 210. In one embodiment of the invention, the signal quality parameters are provided in the form of a signal quality report. The signal quality parameters may be, but are not limited to, transmit power, signal to interference ratio, signal to noise ratio, packet error rate, bit error rate, and carrier to interference ratio. These parameters are important for estimating the position of the mobile station. Here, the signal quality report is only an exemplary parameter for measurement and reporting, and the device provider can select other parameters as needed. In one embodiment of the invention, after completing the merge detection step, base station 220 will return south mobile station 230 with a ranging response message with a power adjustment level. The ranging response message can be forwarded by the relay station 210 to the mobile station 230. In another embodiment of the present invention, the base station 220 collects signal quality measurements at the relay station 210 and at the base station 220, and transmits the control messages transmitted by the mobile station 230 in bursts on the downlink. The feature data information then begins to make a final determination of the mobile station 230 connecting and forwarding the relay station 210 broadcast information. Then, as shown in FIG. 5, the process ends. Note that this figure is merely exemplary, and the actual wireless network access procedure may include more steps.

图 6是根据本发明第二实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图。其中，图 5所示的合并检测步骤 506包括： 6 is a schematic flow chart of a network access method for a wireless multi-hop relay access network according to a second embodiment of the present invention. The merge detection step 506 shown in FIG. 5 includes:

在步驟 601中，如果基站 220只接收到来自移动台 230的测距请求消息，则在步骤 602中确定将移动台 230归属于基站 220; In step 601, if the base station 220 only receives the ranging request message from the mobile station 230, it determines in step 602 that the mobile station 230 is attributed to the base station 220;

在步骤 603中，如果基站 220只接收到由中继站 210转发的移动台 230 的测距请求消息，则在步骤 604中确定将移动台 230归属于中继站 210; 或者 In step 603, if the base station 220 only receives the ranging request message of the mobile station 230 forwarded by the relay station 210, it is determined in step 604 that the mobile station 230 is attributed to the relay station 210; or

在步骤 605中，如果基站 220同时接收到来自移动台 230的测距请求消息和由中继站 210转发的移动台 230的测距请求消息，则在步骤 606中基站 220根据直接来自移动台 230的信号质量参数、中继站 210所监测的信号质量参数、移动台 230所发送的测距请求消息中所带有的其可接受的下行突发包信息来确定将移动台 230归属于基站 220还是中继站 210。除此之外，该图所示的接入过程与图 5所示的接入过程相同，因此不再进行重复说明。注意，该图只是示例性的，实际的无线网络接入过程可以包括更多的步骤。 In step 605, if the base station 220 simultaneously receives the ranging request message from the mobile station 230 and the ranging request message of the mobile station 230 forwarded by the relay station 210, then in step 606 the base station 220 is based on the signal directly from the mobile station 230. The quality parameter, the signal quality parameter monitored by the relay station 210, and its acceptable downlink burst packet information carried in the ranging request message transmitted by the mobile station 230 determine whether the mobile station 230 is attributed to the base station 220 or the relay station 210. Except for this, the access procedure shown in the figure is the same as the access procedure shown in FIG. 5, and thus the description will not be repeated. Note that this figure is merely exemplary, and the actual wireless network access procedure may include more steps.

图 7是根据本发明第三实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图。其中，如果在图 5所示的合并检测步骤 506中确定将移动台 230归属于基站 220 (步骤 701 ),则在步骤 702中基站 220向移动台 230 返回测距响应消息，或者如果在图 5所示的合并检测步骤 506中确定将移动台 230归属于中继站 210(步骤 703 ),则在步骤 704中基站 220向中继站 210 返回测距响应消息，并且中继站 210将测距响应消息转发给移动台 230。 Figure 7 is a schematic flow chart of a network access method for a wireless multi-hop relay access network in accordance with a third embodiment of the present invention. If it is determined in the merge detection step 506 shown in FIG. 5 that the mobile station 230 is assigned to the base station 220 (step 701), the base station 220 returns a ranging response message to the mobile station 230 in step 702, or if in FIG. In the merge detection step 506 shown, it is determined that the mobile station 230 is attributed to the relay station 210 (step 703), then in step 704 the base station 220 returns a ranging response message to the relay station 210, and the relay station 210 forwards the ranging response message to the mobile station. 230.

在本发明的另一个实施例中，如果确定将移动台 230归属于中继站 210，则基站 220根据在中继站 210中测量到的信号级别来调整包含在该测距响应消息中的 RF (射频）功率级别分配。由于来自这些移动台 230的所有上行链路传输数据都要先由中继站 210接收再转发给基站 220,因此应对移动台 230 的功率级别进行调整以适应移动台 -中继站的传输。在本发明的另一个实施例中，还可以对移动台 230中的时间偏移进行相同的调整。 In another embodiment of the present invention, if it is determined that the mobile station 230 is attributed to the relay station 210, the base station 220 adjusts the RF (radio frequency) power included in the ranging response message according to the signal level measured in the relay station 210. Level assignment. Since all uplink transmission data from these mobile stations 230 is first received by the relay station 210 and forwarded to the base station 220, the power level of the mobile station 230 should be adjusted to accommodate the transmission of the mobile station-relay station. In another embodiment of the invention, the same adjustments can be made to the time offset in the mobile station 230.

除此之外，该图所示的接入过程与图 5所示的接入过程相同，因此不再进行重复说明。注意，该图只是示例性的，实际的无线网络接入过程可以包括更多的步驟。 Except for this, the access procedure shown in the figure is the same as the access procedure shown in Fig. 5, and therefore the description will not be repeated. Note that this figure is only exemplary, and the actual wireless network access procedure can include more steps.

图 8是根据本发明第四实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图。其中，如果在合并检测步骤中确定将移动台 230归属于中继站 210 (步骤 703 )，则在步骤 801中，中继站 210还发送同步和广播信息。除此之外，该图所示的接入过程与图 7所示的接入过程相同，因此不再进行重复说明。注意，该图只是示例性的，实际的无线网络接入过程可以包括更多的步骤。 Figure 8 is a schematic flow chart of a network access method for a wireless multi-hop relay access network in accordance with a fourth embodiment of the present invention. Wherein, if it is determined in the merge detecting step that the mobile station 230 is attributed to the relay station 210 (step 703), then in step 801, the relay station 210 also transmits synchronization and broadcast information. Except for this, the access procedure shown in the figure is the same as the access procedure shown in Fig. 7, and therefore the description will not be repeated. Note that this figure is only exemplary, and the actual wireless network access procedure can include more steps.

图 9是根据本发明第五实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图。其中，在图 5所示的过滤步骤 504中，中继站 210确定活动的移动台 230包括基于多个帧中的基站 220下行链路广播信息来测量移动台 230的信号质量或功率，并且其中： Figure 9 is a schematic flow chart of a network access method for a wireless multi-hop relay access network in accordance with a fifth embodiment of the present invention. Wherein, in the filtering step 504 shown in FIG. 5, the relay station 210 determines that the active mobile station 230 includes measuring the signal quality or power of the mobile station 230 based on the base station 220 downlink broadcast information in the plurality of frames, and wherein:

如果在步骤 901中确定移动台 230的信号质量或功率高于特定门限，则在步骤 902中将移动台 230确定为活动的移动台 230, 然后处理进行到图 5 所示的步驟 505; 或者 If it is determined in step 901 that the signal quality or power of the mobile station 230 is above a certain threshold, the mobile station 230 is determined to be the active mobile station 230 in step 902, and then the process proceeds to step 505 shown in FIG. 5;

如果在步骤 901中去掉移动台 230的信号质量或功率低于特定门限，则在步骤 903中将移动台 230确定为不活动的移动台 230, 然后如图 5所示，处理结束。 If the signal quality or power of the mobile station 230 is removed below the specific threshold in step 901, then The mobile station 230 is determined to be the inactive mobile station 230 in step 903, and then, as shown in Fig. 5, the processing ends.

除此之外，该图所示的接入过程与图 5所示的接入过程相同，因此不再进行重复说明。注意，该图只是示例性的，实际的无线网络接入过程可以包括更多的步骤。 Except for this, the access procedure shown in the figure is the same as the access procedure shown in Fig. 5, and therefore the description will not be repeated. Note that this figure is only exemplary, and the actual wireless network access procedure can include more steps.

图 10是根据本发明第六实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图。其中，图 5所示的合并检测步骤 506包括： FIG. 10 is a schematic flowchart of a network access method for a wireless multi-hop relay access network according to a sixth embodiment of the present invention. The merge detection step 506 shown in FIG. 5 includes:

在步骤 1001中，基站 220估计中继站 210的位置；并且 In step 1001, base station 220 estimates the location of relay station 210;

其中如果在步骤 1002中确定所估计的中继站 210的位置在小区边缘或阴影空洞附近，则在步驟 1003中将移动台 230归属于中继站 210。 If it is determined in step 1002 that the estimated location of the relay station 210 is near the cell edge or the shadow hole, the mobile station 230 is attributed to the relay station 210 in step 1003.

估计中继站 210位置的算法同样可以由设备提供商根据需要来确定。除此之外，该图所示的接入过程与图 5所示的接入过程相同，因此不再进行重复说明。注意，该图只是示例性的，实际的无线网络接入过程可以包括更多的步骤。 The algorithm for estimating the location of the relay 210 can also be determined by the equipment provider as needed. In addition, the access procedure shown in the figure is the same as the access procedure shown in Figure 5, and therefore will not be repeated. Note that this figure is merely exemplary, and the actual wireless network access procedure can include more steps.

设备提供商可以根据需要来确定合并检测算法。基站 220可以根据这些合并检测算法，综合特定的标准来确定应当将移动台 230归属于基站 220还是中继站 210, 或者确定将移动台 230归属于哪一个中继站 210。 The device provider can determine the merge detection algorithm as needed. The base station 220 can determine whether the mobile station 230 should be attributed to the base station 220 or the relay station 210, or to which relay station 210 the mobile station 230 belongs, based on these combined detection algorithms, incorporating specific criteria.

图 11 是根据本发明第七实施例的用于无线多跳中继接入网的网络接入方法的示意性流程图，其中给出根据这些合并检测判断移动台是归属于基站还是归属于中继站的一个例子。在该实施例中，在考虑到移动台 230吞吐量或功率消耗的情况下对***进行配置。其中，图 5所示的合并检测步驟 506 包括： 11 is a schematic flowchart of a network access method for a wireless multi-hop relay access network according to a seventh embodiment of the present invention, wherein it is determined whether the mobile station belongs to a base station or belongs to a relay station according to the combined detection. An example of this. In this embodiment, the system is configured taking into account the throughput or power consumption of the mobile station 230. The merge detection step 506 shown in FIG. 5 includes:

在步骤 1101中，计算有中继站 210时的平均数据传输速率或移动台的功率消耗和无中继站 210时的平均数据传输速率 R₂或移动台的功率消耗 P₂; 以及 In step 1101, an average data transmission rate when the relay station 210 is present or a power consumption of the mobile station and an average data transmission rate R ₂ when the relay station 210 is not available or a power consumption P _{2 of the} mobile station are calculated;

在步骤 1102中将与 2R₂相比较或将？,与 P₂相比较；并且其中当 1^<21 ₂或 P₂<P,时，在步骤 1103中确定将移动台 230归属于基站 220 (因为此时将移动台 230归属于中继站 210并不会提高吞吐量），否则就在步骤 1104中确定将移动台 230归属于中继站 210。 Will it compare with 2R ₂ in step 1102 or will? Comparing with P ₂ ; and wherein when 1^<21 ₂ or P ₂ <P, it is determined in step 1103 that the mobile station 230 is attributed to the base station 220 (because the mobile station 230 is attributable to the relay station 210 at this time The throughput will be increased), otherwise it is determined in step 1104 that the mobile station 230 is attributed to the relay station 210.

除此之外，该图所示的接入过程与图 5所示的接入过程相同，因此不再进行重复说明。注意，该图只是示例性的，实际的无线网络接入过程可以包括更多的步骤。尽管本发明是以示例性实施例来进行描述的，但是本发明不限于此处所给出的实现。本领域的普通技术人员可以根据本说明书给出的实施例得出各种变型。因此，本发明的范围覆盖了除在此公开的实施例之外的各种实施方式，该范围由所附权利要求来限定。 Except for this, the access procedure shown in the figure is the same as the access procedure shown in FIG. 5, and thus the description will not be repeated. Note that this figure is merely exemplary, and the actual wireless network access procedure may include more steps. Although the invention has been described in terms of exemplary embodiments, the invention is not limited to the implementations set forth herein. Various modifications can be made by one of ordinary skill in the art in light of the embodiments presented herein. The scope of the invention is therefore intended to be limited by the appended claims

Claims

权利要求书 Claim

1. 一种中继接入网的网络接入方法，其中所述中继接入网包括基站、中继站和移动台，所述网络接入方法包括如下步骤： A network access method for a relay access network, wherein the relay access network includes a base station, a relay station, and a mobile station, and the network access method includes the following steps:

中继站注册步骤，其中所述中继站接入到网络，并向所述基站表明其是一个中继站； a relay station registration step, wherein the relay station accesses the network and indicates to the base station that it is a relay station;

2. 根据权利要求 1所述的方法，其中在所述合并检测步骤中，确定将所述移动台归属于所述基站还是归属于所述中继站的步骤包括： 2. The method according to claim 1, wherein in the combining detecting step, determining whether to assign the mobile station to the base station or to the relay station comprises:

在第一种情况下，即如果所述基站只接收到直接来自所述移动台的测距请求消息，则确定将所述移动台归属于所述基站； In the first case, that is, if the base station only receives the ranging request message directly from the mobile station, it is determined that the mobile station is attributed to the base station;

在第二种情况下，即如果所述基站只接收到由所述中继站转发的所述移动台的测距请求消息，则确定将所述移动台归属于所述中继站；或者 In the second case, that is, if the base station only receives the ranging request message of the mobile station forwarded by the relay station, it is determined that the mobile station belongs to the relay station; or

在第三种情况下 , 即如果所述基站同时接收到直接来自所述移动台的测距请求消息和由所述中继站转发的所述移动台的测距请求消息 , 则所述基站根据直接来自所述移动台的信号质量参数、所述中继站所监测的信号质量参数和 /或所述移动台所发送的测距请求消息中所带有的其可接受的下行突发包信息来确定将所述移动台归属于所述基站还是归属于所述中继站。 In the third case, that is, if the base station simultaneously receives a ranging request message directly from the mobile station and a ranging request message of the mobile station forwarded by the relay station, the base station directly comes from Determining, by the signal quality parameter of the mobile station, the signal quality parameter monitored by the relay station, and/or its acceptable downlink burst packet information carried in the ranging request message sent by the mobile station Whether the mobile station belongs to the base station or belongs to the relay station.

3.根据权利要求 2所述的方法，还包括： 3. The method of claim 2, further comprising:

如果确定将所述移动台归属于所述基站，则所述基站向所述移动台返回测距响应消息；或者 If it is determined that the mobile station is assigned to the base station, the base station returns a ranging response message to the mobile station; or

如果确定将所述移动台归属于所述中继站，则所述基站向所述中继站返回测距响应消息，并且所述中继站将所述测距响应消息转发给所述移动台。If it is determined that the mobile station is attributed to the relay station, the base station returns to the relay station Returning the ranging response message, and the relay station forwards the ranging response message to the mobile station.

4. 根据权利要求 3所述的方法，其中如果确定将所述移动台归属于所述中继站，则所述中继站还发送同步和广播信息。 4. The method of claim 3, wherein if it is determined that the mobile station is attributed to the relay station, the relay station also transmits synchronization and broadcast information.

5.根据权利要求 1所述的方法，其中在所述过滤步骤中，所述中继站确定所述移动台是否为所述中继站的活动移动台的步骤包括中继站根据基站下行链路广播信息搜索移动台，并且测量移动台的信号质量或功率，并且其中：如果所述移动台的信号质量或功率高于特定门限，则将所述移动台确定为所述中继站的活动移动台；或者 The method according to claim 1, wherein in the filtering step, the step of determining, by the relay station, whether the mobile station is an active mobile station of the relay station comprises the relay station searching for a mobile station according to base station downlink broadcast information And measuring a signal quality or power of the mobile station, and wherein: if the signal quality or power of the mobile station is above a certain threshold, determining the mobile station as the active mobile station of the relay station; or

如果所述移动台的信号质量或功率低于特定门限，则将所述移动台确定为所述中继站的不活动移动台。 If the signal quality or power of the mobile station is below a certain threshold, the mobile station is determined to be the inactive mobile station of the relay station.

6. 根据权利要求 2所述的方法，其中在所述第三种情况下，所述基站确定将所述移动台归属于所述基站还是归属于所述中继站的步骤包括判断启用所述中继站是否能够增加移动台的吞吐量和 /或降低移动台的发射功率，如果引入所述中继站能够增加移动台的吞吐量和 /或降低移动台的发射功率则将所述移动台归属于所述中继站，否则将移动台归属于所述基站。 6. The method according to claim 2, wherein in the third case, the step of determining, by the base station, whether the mobile station belongs to the base station or to the relay station comprises determining whether enabling the relay station Capable of increasing the throughput of the mobile station and/or reducing the transmit power of the mobile station, if the introduction of the relay station can increase the throughput of the mobile station and/or reduce the transmit power of the mobile station, the mobile station is attributed to the relay station, Otherwise the mobile station is assigned to the base station.

7.根据权利要求 1所述的方法，其中在所述中继站注册步骤中，所述中继站通过在所述中继站的测距和认证过程完成之后发送 MAC管理消息来向所述基站表明其是一个中继站。 The method according to claim 1, wherein in the relay station registration step, the relay station indicates to the base station that it is a relay station by transmitting a MAC management message after completion of the ranging and authentication process of the relay station .

8. 根据权利要求 1所述的方法，其中在所述监测步骤中，所述中继站通过检测来自移动台的上行链路突发包或测距请求消息来获得所述移动台的信号质量参数。 8. The method of claim 1, wherein in the monitoring step, the relay station obtains a signal quality parameter of the mobile station by detecting an uplink burst packet or ranging request message from the mobile station.

9. 根据权利要求 2所述的方法，还包括： 9. The method of claim 2, further comprising:

如果确定将所述移动台归属于所述中继站，则所述基站据在所述中继站中测量到的信号级别来调整包含在由所述中继站转发给所述移动台的测距响应消息中的功率调整级别。 If it is determined that the mobile station is attributed to the relay station, the base station adjusts power included in a ranging response message forwarded by the relay station to the mobile station according to a signal level measured in the relay station Adjust the level.

10. 一种用于中继接入网的中继站，其中所述中继接入网包括基站、中继站和移动台，所述中继站包括： 10. A relay station for a relay access network, wherein the relay access network comprises a base station, a relay station, and a mobile station, the relay station comprising:

发射机，用于： Transmitter, for:

向所述基站表明所述中继站是一个中继站；在确定所述移动台为所述中继站的活动移动台之后，才将所述移动台的测距请求消息转发给基站；以及 Dedicating to the base station that the relay station is a relay station; Forwarding the ranging request message of the mobile station to the base station after determining that the mobile station is an active mobile station of the relay station;

11.根据权利要求 10所述的中继站，其中所述接收机通过接收上行链路数据突发包或测距请求消息来监测所述移动台的信号质量参数。 11. The relay station of claim 10, wherein the receiver monitors signal quality parameters of the mobile station by receiving an uplink data burst or ranging request message.

12.根据权利要求 10所述的中继站，其中所述过滤单元基于多个帧中的基站下行链路广播信息搜索移动台，并且测量移动台的信号质量或功率，并且其中： The relay station according to claim 10, wherein said filtering unit searches for a mobile station based on base station downlink broadcast information in a plurality of frames, and measures signal quality or power of the mobile station, and wherein:

如果所述移动台的信号质量或功率高于特定门限，则将所述移动台确定为所述中继站的活动移动台；或者 If the signal quality or power of the mobile station is above a certain threshold, determining the mobile station as the active mobile station of the relay station; or

13.根据权利要求 12所述的中继站，其中所述过滤单元将从所述活动移动台接收的测距请求消息转换为 MAC消息，以便将所述活动的移动台的测距请求消息转发给基站。 13. The relay station of claim 12, wherein the filtering unit converts a ranging request message received from the active mobile station into a MAC message to forward the ranging request message of the active mobile station to a base station .

14.根据权利要求 10所述的中继站，其中所述发射机通过在所述中继站的测距和认证过程完成之后发送 MAC管理消息来向所述基站表明所述中继站是一个中继站。 The relay station according to claim 10, wherein said transmitter indicates to said base station that said relay station is a relay station by transmitting a MAC management message after completion of a ranging and authentication process of said relay station.

15. 一种中继接入网的基站，其中所述中继接入网包括基站、中继站和移动台，所述基站包括： A base station for a relay access network, wherein the relay access network comprises a base station, a relay station, and a mobile station, the base station comprising:

16.根据权利要求 15所述的基站，其中所述合并检测单元确定将所述移动台归属于所述基站还是所述中继站包括： The base station according to claim 15, wherein the merging detecting unit determines whether to assign the mobile station to the base station or the relay station comprises:

在第一种情况下 , 即如果所述接收机只接收到直接来自所述移动台的测距请求消息，则确定将所述移动台归属于所述基站；在第二种情况下，即如果所述接收机只接收到由所述中继站转发的所述移动台的测距请求消息，则确定将所述移动台归属于所述中继站；或者 In the first case, that is, if the receiver only receives the ranging request message directly from the mobile station, determining to assign the mobile station to the base station; In the second case, that is, if the receiver only receives the ranging request message of the mobile station forwarded by the relay station, determining to assign the mobile station to the relay station; or

在第三种情况下，即如果所述接收机同时接收到直接来自所述移动台的测距请求消息和由所述中继站转发的所述移动台的测距请求消息，则 ^据直接来自所述移动台的信号质量参数、所述中继站所监测的信号质量参数和 / 或所述移动台所发送的测距请求消息中所带有的其可接受的下行突发包信息来确定将所述移动台归属于所述基站还是归属于所述中继站。 In the third case, that is, if the receiver simultaneously receives a ranging request message directly from the mobile station and a ranging request message of the mobile station forwarded by the relay station, Determining the movement by the signal quality parameter of the mobile station, the signal quality parameter monitored by the relay station, and/or its acceptable downlink burst packet information carried in the ranging request message sent by the mobile station Whether the station belongs to the base station or belongs to the relay station.

17. 根据权利要求 16所述的基站，其中在所述第三种情况下，所述合并检测单元判断启用所述中继站是否能够增加移动台的吞吐量和 /或降低移动台的发射功率，如果引入所述中继站能够增加移动台的吞吐量和 /或降低移动台的发射功率则则将所述移动台归属于所述中继站，否则将移动台归属于所述基站。 17. The base station according to claim 16, wherein in the third case, the merge detecting unit determines whether enabling the relay station can increase a throughput of the mobile station and/or reduce a transmission power of the mobile station if Introducing the relay station can increase the throughput of the mobile station and/or reduce the transmission power of the mobile station, then assign the mobile station to the relay station, otherwise the mobile station belongs to the base station.

18. 一种无线通信***，包括： 18. A wireless communication system, comprising:

一个或多个移动台； One or more mobile stations;

如权利要求 15-17中的任何一项所述的基站； A base station according to any of claims 15-17;

如权利要求 10-14中的任何一项所述的中继站，用于在所述移动台和所述基站之间转发消息以增加所述移动台的吞吐量和 /或扩展所述基站的覆盖范围。 A relay station according to any one of claims 10-14, for forwarding a message between the mobile station and the base station to increase throughput of the mobile station and/or to extend coverage of the base station .